/* roulang page: index */
:root {
            --color-primary: #E6387C;
            --color-primary-600: #C2185B;
            --color-secondary: #6C3DF4;
            --color-bg-dark: #0E1B2C;
            --color-bg-dark-2: #111D31;
            --color-bg-light: #F5F7FA;
            --color-bg-white: #FFFFFF;
            --color-accent: #FFC53D;
            --color-text: #1A2233;
            --color-text-secondary: #5A6478;
            --color-text-muted: #8E98AB;
            --color-border: #E5E9F0;
            --color-success: #16B8A6;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 4px;
            --shadow-card: 0 4px 20px rgba(14, 27, 44, 0.06);
            --shadow-hover: 0 8px 32px rgba(230, 56, 124, 0.12);
            --shadow-nav: 0 4px 16px rgba(14, 27, 44, 0.08);
            --transition: 0.25s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
            font-size: 1rem;
            line-height: 1.6;
            color: var(--color-text);
            background: #fff;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button {
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
        }
        .section {
            padding: 80px 0;
        }
        .section-bar {
            display: inline-block;
            width: 4px;
            height: 32px;
            background: var(--color-primary);
            border-radius: 2px;
            margin-right: 16px;
        }
        .section-head {
            display: flex;
            align-items: center;
            margin-bottom: 40px;
        }
        .section-head .section-title {
            font-size: clamp(1.6rem, 2.6vw, 2.2rem);
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin: 0;
        }
        .section-head .section-en {
            display: block;
            font-size: 0.78rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            color: var(--color-text-muted);
            text-transform: uppercase;
            margin-top: 4px;
        }
        .section-head .section-more {
            margin-left: auto;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition);
        }
        .section-head .section-more:hover {
            color: var(--color-primary);
        }
        .section-head .section-more i {
            font-size: 0.8rem;
            transition: transform var(--transition);
        }
        .section-head .section-more:hover i {
            transform: translateX(4px);
        }
        .d-none {
            display: none !important;
        }
        /* ===== Buttons ===== */
        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--color-primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-md);
            padding: 0.75rem 1.8rem;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
        }
        .btn-main:hover {
            background: var(--color-primary-600);
            color: #fff;
            box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.2);
        }
        .btn-main:active {
            transform: translateY(1px);
        }
        .btn-main:focus-visible,
        .btn-outline:focus-visible {
            outline: 3px solid rgba(230, 56, 124, 0.3);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--color-secondary);
            border: 2px solid var(--color-secondary);
            border-radius: var(--radius-md);
            padding: 0.7rem 1.6rem;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
        }
        .btn-outline:hover {
            background: rgba(108, 61, 244, 0.08);
            color: var(--color-secondary);
            box-shadow: 0 0 0 3px rgba(108, 61, 244, 0.12);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--color-accent);
            color: #1A2233;
            border: 1px solid var(--color-accent);
            border-radius: var(--radius-md);
            padding: 0.7rem 1.6rem;
            font-size: 0.95rem;
            font-weight: 700;
            cursor: pointer;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .btn-accent:hover {
            color: #1A2233;
            box-shadow: 0 0 0 3px rgba(255, 197, 61, 0.3);
        }
        .btn-cart {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.9rem;
            font-size: 0.82rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition);
        }
        .btn-cart:hover {
            background: var(--color-primary-600);
            box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.2);
        }
        /* ===== Topbar ===== */
        .topbar {
            background: #0A1420;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.72rem;
            height: 36px;
            display: flex;
            align-items: center;
        }
        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .topbar a {
            color: rgba(255, 255, 255, 0.6);
            margin-left: 16px;
            transition: color var(--transition);
        }
        .topbar a:hover {
            color: var(--color-primary);
        }
        .topbar-brand {
            color: rgba(255, 255, 255, 0.8) !important;
            font-weight: 500;
        }
        /* ===== Header ===== */
        .main-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: var(--color-bg-dark);
            box-shadow: var(--shadow-nav);
            transition: background 0.3s ease;
        }
        .main-header.scrolled {
            background: rgba(14, 27, 44, 0.96);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        .header-main {
            background: var(--color-bg-dark);
            padding: 0;
        }
        .header-main .container {
            min-height: 72px;
            display: flex;
            align-items: center;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
        }
        .brand-text {
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.1;
        }
        .brand-sub {
            display: block;
            font-size: 0.62rem;
            font-weight: 500;
            letter-spacing: 0.14em;
            color: rgba(255, 255, 255, 0.5);
            text-transform: uppercase;
            margin-top: 2px;
        }
        .header-search {
            flex: 1;
            max-width: 520px;
            margin: 0 24px;
            position: relative;
            display: flex;
            align-items: center;
        }
        .header-search .search-icon {
            position: absolute;
            left: 16px;
            color: var(--color-secondary);
            font-size: 1.1rem;
            pointer-events: none;
            z-index: 2;
        }
        .header-search input {
            width: 100%;
            height: 44px;
            background: #fff;
            border: 2px solid transparent;
            border-radius: 24px;
            padding: 0 90px 0 44px;
            font-size: 0.92rem;
            color: var(--color-text);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .header-search input::placeholder {
            color: #9AA3B2;
        }
        .header-search input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.2);
        }
        .header-search .search-btn {
            position: absolute;
            right: 4px;
            top: 4px;
            bottom: 4px;
            background: var(--color-secondary);
            color: #fff;
            border: none;
            border-radius: 20px;
            padding: 0 20px;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition);
        }
        .header-search .search-btn:hover {
            background: #5a2fd8;
            box-shadow: 0 0 0 3px rgba(108, 61, 244, 0.25);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .header-actions .btn-main {
            padding: 0.55rem 1.2rem;
            font-size: 0.9rem;
        }
        .cart-icon {
            position: relative;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.15rem;
            transition: background var(--transition);
        }
        .cart-icon:hover {
            background: rgba(255, 255, 255, 0.16);
            color: #fff;
        }
        .cart-badge {
            position: absolute;
            top: 0;
            right: 0;
            width: 17px;
            height: 17px;
            background: var(--color-primary);
            border-radius: 50%;
            font-size: 0.65rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            line-height: 1;
        }
        .mobile-search-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            border: none;
            color: #fff;
            font-size: 1.15rem;
            align-items: center;
            justify-content: center;
        }
        .mobile-search-toggle:hover {
            background: rgba(255, 255, 255, 0.16);
        }
        .mobile-search-panel {
            display: none;
            padding: 12px 0;
            background: var(--color-bg-dark);
        }
        .mobile-search-panel.open {
            display: block;
        }
        .mobile-search-panel .header-search {
            margin: 0;
            max-width: 100%;
        }
        /* ===== Nav ===== */
        .main-nav {
            background: #080F18;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .nav-list {
            list-style: none;
            display: flex;
            align-items: center;
            margin: 0;
            padding: 0;
        }
        .nav-list .nav-item {
            margin: 0 4px;
        }
        .nav-list .nav-link {
            display: block;
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.92rem;
            font-weight: 500;
            padding: 14px 20px;
            border-bottom: 3px solid transparent;
            transition: color var(--transition), border-color var(--transition);
            white-space: nowrap;
        }
        .nav-list .nav-link:hover {
            color: #fff;
            border-bottom-color: var(--color-primary);
        }
        .nav-list .nav-link.active {
            color: var(--color-primary);
            border-bottom-color: var(--color-primary);
            font-weight: 600;
        }
        .navbar-toggler {
            display: none;
        }
        .navbar-collapse.show {
            background: #080F18;
        }
        /* ===== Hero ===== */
        .hero {
            background: var(--color-bg-dark);
            position: relative;
            overflow: hidden;
            padding: 72px 0 88px;
        }
        .hero::before {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(108, 61, 244, 0.22), transparent 70%);
            animation: float-glow 8s ease-in-out infinite alternate;
        }
        .hero::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(to right, var(--color-primary), transparent);
        }
        @keyframes float-glow {
            0% {
                transform: translateY(0) scale(1);
            }
            100% {
                transform: translateY(-20px) scale(1.05);
            }
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
        }
        .hero .container {
            position: relative;
            z-index: 1;
        }
        .hero-content {
            color: #fff;
        }
        .hero-content h1 {
            font-size: clamp(2.2rem, 4vw, 3.4rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .hero-content h1 .hl {
            color: var(--color-primary);
        }
        .hero-sub {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 480px;
        }
        .hero-sub .spec-divider {
            color: var(--color-primary);
            margin: 0 8px;
        }
        .hero-ctas {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }
        .hero-video-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.85rem;
            transition: color var(--transition);
            cursor: pointer;
        }
        .hero-video-link:hover {
            color: var(--color-primary);
        }
        .hero-video-link .play-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.18);
            font-size: 0.8rem;
            color: var(--color-primary);
            transition: background var(--transition), border-color var(--transition);
        }
        .hero-video-link:hover .play-icon {
            background: rgba(230, 56, 124, 0.18);
            border-color: var(--color-primary);
        }
        .hero-trust {
            display: flex;
            align-items: center;
            gap: 24px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            flex-wrap: wrap;
        }
        .hero-trust span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.82rem;
        }
        .hero-trust i {
            color: var(--color-success);
            font-size: 0.9rem;
        }
        .hero-image-wrap {
            position: relative;
        }
        .hero-image-main {
            background: #E8ECF2;
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 420px;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
        }
        .hero-image-main img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-float-card {
            position: absolute;
            left: -24px;
            bottom: 32px;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 16px 20px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
            display: flex;
            align-items: center;
            gap: 12px;
            animation: float-card 6s ease-in-out infinite alternate;
        }
        @keyframes float-card {
            0% {
                transform: translateY(0);
            }
            100% {
                transform: translateY(-8px);
            }
        }
        .hero-float-card .card-title {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 2px;
        }
        .hero-float-card .card-sub {
            font-size: 0.75rem;
            color: var(--color-text-muted);
        }
        .hero-float-card .card-price {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-primary);
            font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
        }
        .hero-float-card .card-price-tag {
            background: var(--color-accent);
            color: #1A2233;
            font-size: 0.72rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: var(--radius-sm);
        }
        /* ===== Spec Marquee ===== */
        .spec-marquee {
            background: var(--color-bg-dark-2);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .spec-marquee .spec-row {
            display: flex;
            align-items: center;
            min-height: 64px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .spec-marquee .spec-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 28px;
            border-left: 1px solid rgba(255, 255, 255, 0.12);
            flex: 1;
            min-width: 180px;
            white-space: nowrap;
        }
        .spec-marquee .spec-item:first-child {
            border-left: none;
        }
        .spec-marquee .spec-item i {
            font-size: 1.2rem;
            color: var(--color-primary);
        }
        .spec-marquee .spec-item .spec-val {
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
        }
        .spec-marquee .spec-item .spec-label {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.75rem;
        }
        /* ===== Products ===== */
        .products-section {
            background: var(--color-bg-light);
            padding: 80px 0;
        }
        .product-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .product-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .product-img {
            position: relative;
            background: #F0F2F5;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .product-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .product-card:hover .product-img img {
            transform: scale(1.03);
        }
        .product-card-lg .product-img {
            height: 260px;
        }
        .product-card-md .product-img {
            height: 220px;
        }
        .product-card-sm .product-img {
            height: 160px;
        }
        .badge-new,
        .badge-hot,
        .badge-limit {
            position: absolute;
            top: 12px;
            left: 12px;
            font-size: 0.68rem;
            font-weight: 600;
            color: #1A2233;
            background: var(--color-accent);
            padding: 3px 10px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.03em;
            z-index: 1;
        }
        .badge-hot {
            background: var(--color-primary);
            color: #fff;
        }
        .badge-limit {
            background: var(--color-secondary);
            color: #fff;
        }
        .fav-btn {
            position: absolute;
            top: 12px;
            right: 12px;
            width: 32px;
            height: 32px;
            background: rgba(255, 255, 255, 0.85);
            border: none;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-muted);
            font-size: 0.9rem;
            cursor: pointer;
            z-index: 1;
            transition: color var(--transition), transform var(--transition);
        }
        .fav-btn:hover {
            color: var(--color-primary);
            transform: scale(1.08);
        }
        .fav-btn.active {
            color: var(--color-primary);
        }
        .product-body {
            padding: 18px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .product-body h3 {
            font-size: clamp(1.05rem, 1.4vw, 1.2rem);
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .product-body p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            margin-bottom: 12px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .product-price {
            display: flex;
            align-items: baseline;
            gap: 8px;
            margin-bottom: 10px;
        }
        .product-price .price {
            color: var(--color-primary);
            font-weight: 700;
            font-size: 1.15rem;
            font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
        }
        .product-price .price-origin {
            color: var(--color-text-muted);
            text-decoration: line-through;
            font-size: 0.8rem;
        }
        .product-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }
        .product-tags span {
            font-size: 0.7rem;
            font-weight: 500;
            background: var(--color-bg-light);
            color: var(--color-text-secondary);
            padding: 3px 10px;
            border-radius: 20px;
            border: 1px solid var(--color-border);
        }
        .product-footer {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
        }
        .compare-btn {
            background: transparent;
            border: 1px solid var(--color-secondary);
            color: var(--color-secondary);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.8rem;
            font-size: 0.8rem;
            font-weight: 500;
            cursor: pointer;
            transition: background var(--transition), color var(--transition);
        }
        .compare-btn:hover {
            background: rgba(108, 61, 244, 0.08);
        }
        /* ===== Tech Features ===== */
        .tech-section {
            background: #fff;
            padding: 80px 0;
        }
        .tech-feature {
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border);
            transition: border-color var(--transition);
        }
        .tech-feature:hover {
            border-bottom-color: var(--color-primary);
        }
        .tech-feature .tech-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 16px;
            transition: transform var(--transition);
        }
        .tech-feature:hover .tech-icon {
            transform: translateY(-4px);
        }
        .tech-feature h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .tech-feature p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
            margin-bottom: 4px;
        }
        .cta-band {
            background: var(--color-bg-dark);
            color: #fff;
            padding: 40px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-band::before {
            content: '';
            position: absolute;
            left: -40px;
            top: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(108, 61, 244, 0.2), transparent 70%);
        }
        .cta-band .cta-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .cta-band h3 {
            font-size: 1.25rem;
            margin-bottom: 4px;
        }
        .cta-band p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            margin: 0;
        }
        /* ===== Testimonials ===== */
        .testimonial-section {
            background: var(--color-bg-light);
            padding: 80px 0;
        }
        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            padding: 28px;
            height: 100%;
            position: relative;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .testimonial-card::before {
            content: '“';
            position: absolute;
            top: 10px;
            right: 20px;
            font-size: 4rem;
            font-family: Georgia, serif;
            color: rgba(230, 56, 124, 0.1);
            line-height: 1;
        }
        .testimonial-stars {
            color: var(--color-accent);
            font-size: 0.95rem;
            margin-bottom: 14px;
            letter-spacing: 2px;
        }
        .testimonial-text {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
            min-height: 72px;
        }
        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
        }
        .testimonial-avatar.t2 {
            background: linear-gradient(135deg, var(--color-secondary), #3a1d9e);
        }
        .testimonial-avatar.t3 {
            background: linear-gradient(135deg, #ff8e3d, var(--color-primary));
        }
        .testimonial-user .user-name {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text);
        }
        .testimonial-user .user-role {
            font-size: 0.75rem;
            color: var(--color-text-muted);
        }
        .testimonial-user .user-product {
            margin-left: auto;
            font-size: 0.72rem;
            color: var(--color-text-muted);
        }
        .carousel-indicators {
            bottom: -48px;
        }
        .carousel-indicators [data-bs-target] {
            width: 24px;
            height: 4px;
            border-radius: 4px;
            background: var(--color-primary);
            opacity: 0.3;
            border: none;
            transition: opacity var(--transition), width var(--transition);
        }
        .carousel-indicators [data-bs-target].active {
            opacity: 1;
            width: 36px;
        }
        .carousel-control-prev,
        .carousel-control-next {
            width: 40px;
            height: 40px;
            background: rgba(230, 56, 124, 0.08);
            border-radius: 50%;
            top: 50%;
            transform: translateY(-50%);
            opacity: 0.7;
        }
        .carousel-control-prev {
            left: -20px;
        }
        .carousel-control-next {
            right: -20px;
        }
        .carousel-control-prev:hover,
        .carousel-control-next:hover {
            opacity: 1;
            background: rgba(230, 56, 124, 0.15);
        }
        /* ===== Guarantee ===== */
        .guarantee-section {
            background: var(--color-bg-dark);
            color: #fff;
            padding: 48px 0;
        }
        .guarantee-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px 28px;
            border-left: 1px solid rgba(255, 255, 255, 0.1);
            min-height: 72px;
        }
        .guarantee-item:first-child {
            border-left: none;
        }
        .guarantee-item i {
            font-size: 1.6rem;
            color: var(--color-primary);
        }
        .guarantee-item .g-title {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .guarantee-item .g-sub {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.55);
        }
        /* ===== News ===== */
        .news-section {
            background: #fff;
            padding: 80px 0;
        }
        .news-card {
            display: flex;
            flex-direction: column;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            overflow: hidden;
            background: #fff;
            transition: transform var(--transition), box-shadow var(--transition);
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .news-card .news-card-image {
            position: relative;
            background: #F0F2F5;
            overflow: hidden;
        }
        .news-card-lg .news-card-image {
            height: 200px;
        }
        .news-card-md .news-card-image {
            height: 140px;
        }
        .news-card .news-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-card-image img {
            transform: scale(1.04);
        }
        .news-card .news-cat {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(230, 56, 124, 0.9);
            color: #fff;
            font-size: 0.68rem;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 20px;
            z-index: 1;
        }
        .news-card .news-card-content {
            padding: 18px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card .news-card-content h3 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.4;
            margin-bottom: 8px;
            transition: color var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card:hover .news-card-content h3 {
            color: var(--color-primary);
        }
        .news-card .news-card-content p {
            font-size: 0.82rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-meta {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.75rem;
            color: var(--color-text-muted);
        }
        .news-card .news-meta i {
            margin-right: 4px;
        }
        .news-card .news-link {
            color: var(--color-primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .empty-state {
            background: var(--color-bg-light);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--color-border);
            padding: 48px;
            text-align: center;
            color: var(--color-text-muted);
        }
        .empty-state i {
            font-size: 2rem;
            display: block;
            margin-bottom: 10px;
            color: var(--color-text-muted);
        }
        /* ===== FAQ ===== */
        .faq-section {
            background: var(--color-bg-light);
            padding: 80px 0;
        }
        .faq-section .accordion-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
        }
        .faq-section .accordion-button {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text);
            padding: 16px 20px;
            background: #fff;
            box-shadow: none !important;
            position: relative;
            border-radius: var(--radius-md) !important;
        }
        .faq-section .accordion-button::after {
            background-image: none;
            content: '+';
            font-size: 1.3rem;
            font-weight: 300;
            color: var(--color-text-muted);
            transform: none;
            transition: transform var(--transition), color var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .faq-section .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--color-primary);
        }
        .faq-section .accordion-button:not(.collapsed) {
            background: #fff;
            color: var(--color-primary);
        }
        .faq-section .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.15);
        }
        .faq-section .accordion-body {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            padding: 6px 20px 18px;
        }
        .faq-more {
            margin-top: 20px;
            text-align: center;
        }
        .faq-more a {
            color: var(--color-primary);
            font-weight: 500;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: #0A1420;
            color: rgba(255, 255, 255, 0.65);
            padding: 64px 0 0;
            font-size: 0.88rem;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand .brand-icon {
            width: 36px;
            height: 36px;
            font-size: 0.8rem;
        }
        .footer-brand .brand-text {
            color: #fff;
            font-size: 1.1rem;
        }
        .site-footer .footer-desc {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.82rem;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            margin-right: 8px;
            font-size: 0.8rem;
            transition: background var(--transition), color var(--transition);
        }
        .footer-social a:hover {
            background: var(--color-primary);
            color: #fff;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--color-primary);
        }
        .footer-contact p {
            margin-bottom: 10px;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact i {
            color: var(--color-primary);
            font-size: 0.9rem;
        }
        .footer-subscribe {
            margin-top: 20px;
        }
        .footer-subscribe input {
            height: 40px;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
            padding: 0 16px;
            font-size: 0.85rem;
            width: 100%;
            max-width: 230px;
            margin-right: 8px;
            transition: border-color var(--transition);
        }
        .footer-subscribe input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-subscribe input:focus {
            outline: none;
            border-color: var(--color-primary);
        }
        .footer-subscribe .btn-main {
            padding: 0.55rem 1.2rem;
            font-size: 0.85rem;
        }
        .footer-bottom {
            margin-top: 48px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 18px 0;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            margin-left: 16px;
        }
        .footer-bottom a:hover {
            color: var(--color-primary);
        }
        /* ===== Responsive ===== */
        @media (max-width: 1199.98px) {
            .header-search {
                max-width: 360px;
                margin: 0 16px;
            }
            .header-search input {
                padding: 0 80px 0 36px;
                font-size: 0.85rem;
            }
            .header-search .search-btn {
                padding: 0 14px;
                font-size: 0.8rem;
            }
            .nav-list .nav-link {
                padding: 14px 14px;
                font-size: 0.88rem;
            }
            .hero-float-card {
                left: 0;
            }
            .guarantee-item {
                padding: 16px 16px;
            }
        }
        @media (max-width: 991.98px) {
            .section {
                padding: 60px 0;
            }
            .header-main .container {
                min-height: 64px;
            }
            .header-search {
                display: none;
            }
            .mobile-search-toggle {
                display: inline-flex;
            }
            .main-nav .container {
                justify-content: flex-start;
                overflow-x: auto;
            }
            .nav-list {
                flex-wrap: nowrap;
            }
            .nav-list .nav-link {
                padding: 12px 16px;
                font-size: 0.85rem;
            }
            .hero {
                padding: 48px 0 64px;
            }
            .hero-image-main {
                min-height: 320px;
            }
            .hero-float-card {
                bottom: 20px;
            }
            .spec-marquee .spec-item {
                min-width: 160px;
                padding: 0 18px;
            }
            .carousel-control-prev {
                left: -8px;
            }
            .carousel-control-next {
                right: -8px;
            }
        }
        @media (max-width: 767.98px) {
            .topbar {
                display: none;
            }
            .header-main .container {
                min-height: 56px;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 0.75rem;
            }
            .brand-text {
                font-size: 1.1rem;
            }
            .header-actions .btn-main {
                padding: 0.45rem 0.9rem;
                font-size: 0.85rem;
            }
            .hero {
                padding: 36px 0 56px;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-sub {
                font-size: 0.9rem;
                margin-bottom: 20px;
            }
            .hero-ctas {
                gap: 12px;
                margin-bottom: 24px;
            }
            .hero-ctas .btn-main,
            .hero-ctas .btn-outline {
                padding: 0.6rem 1.2rem;
                font-size: 0.88rem;
                flex: 1;
                min-width: 140px;
            }
            .hero-trust {
                gap: 12px;
                padding-top: 16px;
            }
            .hero-trust span {
                font-size: 0.75rem;
            }
            .hero-image-wrap {
                margin-top: 32px;
            }
            .hero-image-main {
                min-height: 240px;
            }
            .hero-float-card {
                padding: 12px 16px;
                bottom: 12px;
            }
            .spec-marquee .spec-item {
                min-width: 150px;
            }
            .products-section {
                padding: 48px 0;
            }
            .product-card-lg .product-img {
                height: 200px;
            }
            .product-card-md .product-img {
                height: 180px;
            }
            .product-card-sm .product-img {
                height: 140px;
            }
            .tech-section {
                padding: 48px 0;
            }
            .tech-feature {
                padding: 16px 0;
            }
            .testimonial-section {
                padding: 48px 0;
            }
            .testimonial-card {
                padding: 20px;
            }
            .carousel-control-prev {
                left: 0;
            }
            .carousel-control-next {
                right: 0;
            }
            .guarantee-section {
                padding: 32px 0;
            }
            .guarantee-item {
                border-left: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                padding: 14px 8px;
            }
            .news-section {
                padding: 48px 0;
            }
            .news-card-lg .news-card-image {
                height: 160px;
            }
            .faq-section {
                padding: 48px 0;
            }
            .site-footer {
                padding-top: 40px;
            }
            .footer-bottom .container {
                justify-content: center;
                text-align: center;
            }
            .footer-bottom a {
                margin-left: 8px;
                margin-right: 8px;
            }
            .cta-band .cta-content {
                flex-direction: column;
                text-align: center;
            }
            .cta-band .btn-main {
                width: 100%;
                max-width: 240px;
            }
        }
        @media (max-width: 575.98px) {
            .header-actions .btn-main {
                display: none;
            }
            .mobile-search-panel .header-search {
                flex: 1;
            }
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-sub {
                font-size: 0.82rem;
            }
            .hero-ctas {
                flex-direction: column;
            }
            .hero-ctas .btn-main,
            .hero-ctas .btn-outline {
                width: 100%;
            }
            .hero-trust {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .spec-marquee .spec-item {
                min-width: 130px;
                padding: 0 14px;
            }
            .section-head {
                margin-bottom: 28px;
            }
            .section-head .section-title {
                font-size: 1.35rem;
            }
            .section-head .section-en {
                font-size: 0.68rem;
            }
            .section-head .section-more {
                font-size: 0.8rem;
            }
            .product-footer {
                flex-direction: column;
                align-items: stretch;
            }
            .product-footer .btn-cart {
                justify-content: center;
            }
            .product-footer .compare-btn {
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #E6387C;
            --color-primary-600: #C2185B;
            --color-secondary: #6C3DF4;
            --color-bg-dark: #0E1B2C;
            --color-bg-dark-2: #0A1420;
            --color-bg-light: #F5F7FA;
            --color-bg-white: #FFFFFF;
            --color-accent: #FFC53D;
            --color-text-main: #1A2233;
            --color-text-sub: #5A6478;
            --color-text-muted: #8E98AB;
            --color-border: #E5E9F0;
            --color-success: #16B8A6;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 4px;
            --shadow-card: 0 4px 20px rgba(14, 27, 44, 0.06);
            --shadow-hover: 0 8px 32px rgba(230, 56, 124, 0.12);
            --transition: 0.25s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
            color: var(--color-text-main);
            background: var(--color-bg-white);
            line-height: 1.75;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-primary);
        }
        button {
            border: none;
            cursor: pointer;
            font-family: inherit;
        }
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-md);
            padding: 0.75rem 1.8rem;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            transition: all var(--transition);
        }
        .btn-main:hover {
            background: var(--color-primary-600);
            color: #fff;
            box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.2);
            transform: translateY(-2px);
        }
        .btn-main:active {
            transform: translateY(0);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--color-secondary);
            border: 2px solid var(--color-secondary);
            border-radius: var(--radius-md);
            padding: 0.65rem 1.6rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
        }
        .btn-outline:hover {
            background: rgba(108, 61, 244, 0.1);
            color: var(--color-secondary);
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-accent);
            color: #1A2233;
            border-radius: var(--radius-md);
            padding: 0.7rem 1.8rem;
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            transition: all var(--transition);
        }
        .btn-accent:hover {
            background: #e6b02e;
            color: #1A2233;
            transform: translateY(-2px);
            box-shadow: 0 4px 20px rgba(255, 197, 61, 0.4);
        }
        .section-title {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 24px;
        }
        .section-title .title-bar {
            width: 4px;
            height: 22px;
            background: var(--color-primary);
            border-radius: 2px;
            flex-shrink: 0;
        }
        .section-title h2 {
            font-size: clamp(1.5rem, 2.4vw, 2rem);
            font-weight: 700;
            color: var(--color-text-main);
            margin: 0;
            letter-spacing: -0.02em;
        }
        .section-title .title-en {
            font-size: 0.78rem;
            font-weight: 500;
            letter-spacing: 0.06em;
            color: var(--color-text-muted);
            text-transform: uppercase;
            margin-top: 6px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-bg-dark);
            box-shadow: 0 4px 16px rgba(14, 27, 44, 0.08);
            backdrop-filter: blur(8px);
        }
        .header-top {
            background: var(--color-bg-dark-2);
            height: 36px;
            display: flex;
            align-items: center;
        }
        .header-top .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .header-top-brand {
            font-size: 0.72rem;
            color: rgba(255, 255, 255, 0.6);
            letter-spacing: 0.04em;
        }
        .header-top-links {
            display: flex;
            gap: 20px;
        }
        .header-top-links a {
            font-size: 0.72rem;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }
        .header-top-links a:hover {
            color: var(--color-primary);
        }
        .header-main {
            height: 72px;
            display: flex;
            align-items: center;
            background: var(--color-bg-dark);
        }
        .header-main .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
            font-weight: 800;
            font-size: 1rem;
            border-radius: 8px;
            letter-spacing: 0.02em;
        }
        .brand-text {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            line-height: 1.2;
        }
        .brand-sub {
            font-size: 0.6rem;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.3em;
            text-transform: uppercase;
            display: block;
            margin-top: 2px;
        }
        .search-wrap {
            flex: 1;
            max-width: 520px;
            margin: 0 auto;
        }
        .search-form {
            display: flex;
            align-items: center;
            background: #fff;
            border-radius: 24px;
            height: 44px;
            padding: 0 6px 0 18px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
            transition: box-shadow var(--transition);
        }
        .search-form:focus-within {
            box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.25);
        }
        .search-form .bi-search {
            color: var(--color-secondary);
            font-size: 1rem;
            margin-right: 12px;
            flex-shrink: 0;
        }
        .search-form input {
            flex: 1;
            border: none;
            outline: none;
            background: transparent;
            font-size: 0.95rem;
            color: var(--color-text-main);
            min-width: 0;
        }
        .search-form input::placeholder {
            color: #9AA3B2;
        }
        .search-form .search-btn {
            background: var(--color-secondary);
            color: #fff;
            border-radius: 20px;
            height: 34px;
            padding: 0 20px;
            font-size: 0.88rem;
            font-weight: 600;
            transition: background var(--transition);
            white-space: nowrap;
        }
        .search-form .search-btn:hover {
            background: #5a2ce0;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .cart-btn {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 8px;
            color: #fff;
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .cart-btn:hover {
            background: rgba(230, 56, 124, 0.2);
            border-color: var(--color-primary);
            color: #fff;
        }
        .cart-badge {
            position: absolute;
            top: -6px;
            right: -6px;
            background: var(--color-primary);
            color: #fff;
            font-size: 0.62rem;
            font-weight: 700;
            min-width: 18px;
            height: 18px;
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 4px;
        }
        .main-nav {
            background: #080F18;
        }
        .main-nav .container {
            display: flex;
            justify-content: center;
        }
        .nav-list {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            justify-content: center;
        }
        .nav-item {
            margin: 0;
        }
        .nav-link {
            display: block;
            padding: 0.75rem 1.8rem;
            font-size: 0.92rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            position: relative;
            transition: color var(--transition);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 0;
            width: 0;
            height: 3px;
            background: var(--color-primary);
            transition: all 0.3s ease;
            transform: translateX(-50%);
            border-radius: 2px;
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: #fff;
            font-weight: 600;
        }
        .nav-link.active::after {
            width: 100%;
        }
        .mobile-toggle {
            display: none;
            background: transparent;
            color: #fff;
            font-size: 1.6rem;
            padding: 6px;
            border-radius: 6px;
        }

        /* ===== Category Banner ===== */
        .category-banner {
            position: relative;
            height: 260px;
            background: var(--color-bg-dark);
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .category-banner .banner-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.3;
        }
        .category-banner .banner-decor {
            position: absolute;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(108, 61, 244, 0.3), transparent 70%);
            top: 50%;
            right: 10%;
            transform: translateY(-50%);
            pointer-events: none;
        }
        .category-banner .banner-decor-2 {
            position: absolute;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(230, 56, 124, 0.18);
            bottom: -30px;
            left: 18%;
            pointer-events: none;
        }
        .category-banner .watermark {
            position: absolute;
            right: 5%;
            top: 50%;
            transform: translateY(-50%);
            font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
            font-size: 11rem;
            font-weight: 800;
            color: rgba(255, 255, 255, 0.04);
            line-height: 1;
            letter-spacing: 0.02em;
            pointer-events: none;
            user-select: none;
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
        }
        .category-banner h1 {
            font-size: clamp(1.8rem, 3.2vw, 2.6rem);
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin: 0 0 10px;
        }
        .category-banner .banner-desc {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.98rem;
            margin: 0 0 16px;
            max-width: 540px;
            line-height: 1.7;
        }
        .breadcrumb-nav .breadcrumb {
            background: rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            padding: 6px 18px;
            display: inline-flex;
            margin: 0;
            backdrop-filter: blur(4px);
        }
        .breadcrumb-nav .breadcrumb a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.82rem;
        }
        .breadcrumb-nav .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb-nav .breadcrumb .active {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.82rem;
        }
        .breadcrumb-nav .breadcrumb-item + .breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Category Tabs ===== */
        .category-tabs {
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 900;
        }
        .tabs-wrapper {
            display: flex;
            gap: 10px;
            padding: 14px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .tabs-wrapper::-webkit-scrollbar {
            height: 4px;
        }
        .tabs-wrapper::-webkit-scrollbar-thumb {
            background: var(--color-primary);
            border-radius: 2px;
        }
        .tab {
            display: inline-flex;
            align-items: center;
            height: 40px;
            padding: 0 20px;
            background: #fff;
            color: var(--color-text-sub);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition);
        }
        .tab:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .tab.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        /* ===== Product List ===== */
        .product-list-section {
            padding: 60px 0;
            background: var(--color-bg-light);
        }
        .category-list-wrapper {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 28px;
        }
        .product-row-card {
            display: flex;
            align-items: center;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 16px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(229, 233, 240, 0.6);
            position: relative;
            overflow: hidden;
            transition: all var(--transition);
            min-height: 132px;
        }
        .product-row-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .row-card-accent {
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--color-secondary);
            transition: width var(--transition);
        }
        .product-row-card:hover .row-card-accent {
            width: 8px;
            background: var(--color-primary);
        }
        .row-card-thumb {
            width: 160px;
            height: 108px;
            border-radius: var(--radius-md);
            background: #F0F2F5;
            overflow: hidden;
            flex-shrink: 0;
            margin-left: 16px;
            position: relative;
        }
        .row-card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .row-card-thumb .badge-accent {
            position: absolute;
            top: 8px;
            left: 8px;
            background: var(--color-accent);
            color: #1A2233;
            font-size: 0.65rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.02em;
        }
        .row-card-info {
            flex: 1;
            padding: 0 20px;
            min-width: 0;
        }
        .row-card-info .tag-primary {
            display: inline-block;
            font-size: 0.7rem;
            color: var(--color-primary);
            background: rgba(230, 56, 124, 0.08);
            padding: 2px 10px;
            border-radius: 10px;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 6px;
        }
        .row-card-info h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text-main);
            margin: 0 0 4px;
            line-height: 1.4;
        }
        .row-card-info p {
            font-size: 0.85rem;
            color: var(--color-text-sub);
            line-height: 1.6;
            margin: 0 0 8px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .row-card-info .spec-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .row-card-info .spec-tags span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.7rem;
            color: var(--color-text-muted);
            background: #F5F7FA;
            padding: 2px 10px;
            border-radius: 12px;
            letter-spacing: 0.02em;
        }
        .row-card-info .spec-tags span::before {
            content: '';
            width: 4px;
            height: 4px;
            background: var(--color-secondary);
            border-radius: 50%;
        }
        .row-card-price {
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 10px;
            flex-shrink: 0;
            margin-right: 16px;
        }
        .row-card-price .price-tag {
            background: var(--color-accent);
            color: #1A2233;
            font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
            font-size: 1.05rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 6px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .btn-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-bg-light);
            border: 1px solid var(--color-border);
            color: var(--color-text-sub);
            font-size: 1rem;
            transition: all var(--transition);
        }
        .btn-circle:hover {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
            transform: translateX(3px);
        }

        /* ===== Extend Section ===== */
        .extend-section {
            padding: 60px 0;
            background: #fff;
        }
        .guide-panel,
        .download-panel {
            background: var(--color-bg-light);
            border-radius: var(--radius-lg);
            padding: 32px;
            height: 100%;
            border: 1px solid rgba(229, 233, 240, 0.6);
        }
        .guide-panel h2,
        .download-panel h2 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-text-main);
            display: flex;
            align-items: center;
            gap: 10px;
            margin: 0 0 24px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--color-border);
        }
        .guide-panel h2::before,
        .download-panel h2::before {
            content: '';
            width: 4px;
            height: 18px;
            background: var(--color-primary);
            border-radius: 2px;
        }
        .guide-steps {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .guide-steps li {
            display: flex;
            gap: 16px;
            padding: 14px 0;
            border-bottom: 1px solid rgba(229, 233, 240, 0.6);
        }
        .guide-steps li:last-child {
            border-bottom: none;
        }
        .guide-steps .step-num {
            font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.2;
            min-width: 36px;
        }
        .guide-steps h4 {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--color-text-main);
            margin: 0 0 4px;
        }
        .guide-steps p {
            font-size: 0.85rem;
            color: var(--color-text-sub);
            line-height: 1.6;
            margin: 0;
        }
        .download-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .download-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(229, 233, 240, 0.6);
        }
        .download-list li:last-child {
            border-bottom: none;
        }
        .download-list .bi-file-earmark-arrow-down {
            font-size: 1.3rem;
            color: var(--color-secondary);
            flex-shrink: 0;
        }
        .download-list .dl-info {
            flex: 1;
            min-width: 0;
        }
        .download-list .dl-name {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text-main);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .download-list .dl-meta {
            font-size: 0.75rem;
            color: var(--color-text-muted);
        }
        .btn-download {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            border: 1.5px solid var(--color-secondary);
            color: var(--color-secondary);
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            padding: 4px 14px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-download:hover {
            background: var(--color-secondary);
            color: #fff;
        }

        /* ===== CTA Panel ===== */
        .cta-panel {
            padding: 50px 0;
            background: var(--color-bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(108, 61, 244, 0.2), transparent 70%);
            right: -80px;
            top: 50%;
            transform: translateY(-50%);
        }
        .cta-panel .container {
            position: relative;
            z-index: 2;
        }
        .cta-card {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 32px 40px;
            backdrop-filter: blur(6px);
        }
        .cta-card h3 {
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 0 6px;
        }
        .cta-card p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.92rem;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 60px 0;
            background: var(--color-bg-light);
        }
        .faq-section .section-title h2 {
            color: var(--color-text-main);
        }
        .accordion {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .accordion-item {
            background: #fff;
            border: 1px solid var(--color-border) !important;
            border-radius: var(--radius-lg) !important;
            box-shadow: 0 2px 8px rgba(14, 27, 44, 0.04);
            overflow: hidden;
        }
        .accordion-button {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-main);
            padding: 18px 24px;
            background: #fff;
            box-shadow: none !important;
            position: relative;
        }
        .accordion-button::after {
            background: none;
            content: '+';
            font-family: inherit;
            font-size: 1.5rem;
            font-weight: 300;
            color: var(--color-text-muted);
            text-align: center;
            transition: transform var(--transition), color var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--color-primary);
        }
        .accordion-button:not(.collapsed) {
            color: var(--color-primary);
            background: rgba(230, 56, 124, 0.02);
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.2) !important;
            outline: none;
        }
        .accordion-body {
            padding: 4px 24px 20px;
            font-size: 0.92rem;
            line-height: 1.7;
            color: var(--color-text-sub);
        }
        .faq-more {
            text-align: center;
            margin-top: 28px;
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }
        .faq-more a {
            color: var(--color-primary);
            font-weight: 600;
        }
        .faq-more a:hover {
            color: var(--color-primary-600);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-dark-2);
            color: var(--color-text-muted);
            padding: 50px 0 0;
            font-size: 0.9rem;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.04em;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand .brand-icon {
            width: 38px;
            height: 38px;
            font-size: 0.9rem;
        }
        .footer-brand .brand-text {
            font-size: 1.3rem;
        }
        .footer-desc {
            font-size: 0.85rem;
            line-height: 1.7;
            color: var(--color-text-muted);
            max-width: 320px;
            margin-bottom: 18px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 8px;
            color: rgba(255, 255, 255, 0.7);
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--color-text-muted);
            font-size: 0.85rem;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-links a:hover {
            color: var(--color-primary);
            padding-left: 4px;
        }
        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-bottom: 10px;
        }
        .footer-contact i {
            color: var(--color-primary);
            font-size: 1rem;
        }
        .footer-subscribe .d-flex {
            margin-top: 16px;
        }
        .footer-subscribe input {
            flex: 1;
            min-width: 0;
            height: 40px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 0 14px;
            font-size: 0.85rem;
            color: #fff;
            outline: none;
            transition: border-color var(--transition);
        }
        .footer-subscribe input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-subscribe input:focus {
            border-color: var(--color-primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 40px;
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            margin: 0;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-icp {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.3);
        }
        .footer-legal {
            display: flex;
            gap: 16px;
        }
        .footer-legal a {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-legal a:hover {
            color: var(--color-primary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .search-wrap {
                max-width: 400px;
            }
            .nav-link {
                padding: 0.75rem 1.2rem;
            }
        }
        @media (max-width: 991px) {
            .header-top {
                display: none;
            }
            .header-main {
                height: 64px;
            }
            .search-wrap {
                max-width: 320px;
            }
            .header-actions .btn-main {
                display: none;
            }
            .row-card-thumb {
                width: 120px;
                height: 100px;
            }
            .row-card-info {
                padding: 0 12px;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            .header-main .container {
                gap: 12px;
            }
            .logo-wrap .brand-text {
                font-size: 1.1rem;
            }
            .logo-wrap .brand-sub {
                display: none;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 0.8rem;
            }
            .search-wrap {
                max-width: none;
                width: auto;
                flex: 1;
            }
            .search-form input {
                font-size: 0.85rem;
            }
            .search-form .search-btn {
                padding: 0 14px;
                font-size: 0.8rem;
            }
            .header-actions .cart-btn {
                width: 38px;
                height: 38px;
            }
            .main-nav {
                overflow-x: auto;
            }
            .main-nav .container {
                justify-content: flex-start;
                padding: 0;
            }
            .nav-list {
                flex-wrap: nowrap;
                justify-content: flex-start;
                padding: 0 8px;
            }
            .nav-link {
                padding: 0.7rem 1rem;
                font-size: 0.85rem;
                white-space: nowrap;
            }
            .category-banner {
                height: 220px;
            }
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .category-banner .banner-desc {
                font-size: 0.88rem;
            }
            .category-banner .watermark {
                font-size: 6rem;
            }
            .tabs-wrapper {
                padding: 12px 16px;
            }
            .product-list-section,
            .extend-section,
            .faq-section {
                padding: 40px 0;
            }
            .product-row-card {
                flex-direction: row;
                flex-wrap: wrap;
                padding: 14px;
                min-height: 0;
            }
            .row-card-thumb {
                width: 80px;
                height: 80px;
                margin-left: 8px;
            }
            .row-card-info {
                padding: 0 8px;
            }
            .row-card-info h3 {
                font-size: 0.92rem;
            }
            .row-card-info p {
                font-size: 0.78rem;
                white-space: normal;
                display: -webkit-box;
                -webkit-line-clamp: 2;
                -webkit-box-orient: vertical;
            }
            .row-card-info .spec-tags span {
                font-size: 0.62rem;
                padding: 1px 6px;
            }
            .row-card-price {
                margin-right: 8px;
                gap: 6px;
            }
            .row-card-price .price-tag {
                font-size: 0.85rem;
                padding: 2px 8px;
            }
            .btn-circle {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }
            .guide-panel,
            .download-panel {
                padding: 24px 20px;
            }
            .cta-card {
                padding: 24px 20px;
                flex-direction: column;
                text-align: center;
            }
            .btn-accent {
                width: 100%;
            }
            .accordion-button {
                font-size: 0.92rem;
                padding: 16px 18px;
            }
            .accordion-body {
                padding: 0 18px 16px;
                font-size: 0.88rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .header-main {
                height: 58px;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.7rem;
            }
            .brand-text {
                font-size: 1rem !important;
            }
            .header-actions {
                gap: 8px;
            }
            .cart-btn {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
            .search-form {
                height: 38px;
                padding-left: 12px;
            }
            .search-form .bi-search {
                font-size: 0.85rem;
                margin-right: 6px;
            }
            .search-form .search-btn {
                height: 30px;
                padding: 0 10px;
                font-size: 0.75rem;
            }
            .search-form input {
                font-size: 0.8rem;
            }
            .category-banner {
                height: 200px;
            }
            .category-banner .banner-desc {
                font-size: 0.82rem;
            }
            .row-card-thumb {
                width: 64px;
                height: 72px;
            }
            .row-card-info .spec-tags {
                flex-wrap: wrap;
            }
            .row-card-info .spec-tags span:nth-child(3) {
                display: none;
            }
            .guide-steps .step-num {
                font-size: 1.2rem;
                min-width: 28px;
            }
        }

/* roulang page: article */
:root {
        --color-primary: #E6387C;
        --color-primary-600: #C2185B;
        --color-secondary: #6C3DF4;
        --color-bg-dark: #0E1B2C;
        --color-bg-dark-2: #0A1420;
        --color-bg-light: #F5F7FA;
        --color-bg-white: #FFFFFF;
        --color-accent: #FFC53D;
        --text-main: #1A2233;
        --text-sub: #5A6478;
        --text-mute: #8E98AB;
        --border-color: #E5E9F0;
        --success: #16B8A6;
        --radius-lg: 12px;
        --radius-md: 8px;
        --radius-sm: 4px;
        --shadow-card: 0 4px 20px rgba(14, 27, 44, 0.06);
        --shadow-hover: 0 8px 32px rgba(230, 56, 124, 0.12);
        --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
        --font-num: "DIN Alternate", "Barlow Condensed", "Arial Narrow", sans-serif;
    }
    *,
    *::before,
    *::after {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-sans);
        color: var(--text-main);
        background: var(--color-bg-white);
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
    }
    a {
        color: inherit;
        text-decoration: none;
    }
    a:hover {
        color: var(--color-primary);
    }
    img {
        max-width: 100%;
        height: auto;
    }
    .container {
        max-width: 1280px;
    }
    .btn-main {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        background: var(--color-primary);
        color: #fff;
        border: none;
        border-radius: var(--radius-md);
        padding: 0.75rem 1.8rem;
        font-size: 0.95rem;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.25s ease;
    }
    .btn-main:hover {
        background: var(--color-primary-600);
        color: #fff;
        box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.2);
    }
    .btn-main:active {
        transform: translateY(1px);
    }
    .btn-main:focus-visible,
    .btn-outline:focus-visible,
    .btn-ghost:focus-visible {
        outline: 3px solid rgba(230, 56, 124, 0.3);
        outline-offset: 2px;
    }
    .btn-outline {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        background: transparent;
        color: var(--color-primary);
        border: 2px solid var(--color-primary);
        border-radius: var(--radius-md);
        padding: 0.65rem 1.6rem;
        font-size: 0.95rem;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.25s ease;
    }
    .btn-outline:hover {
        background: rgba(230, 56, 124, 0.08);
        color: var(--color-primary);
    }
    .btn-outline-light {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        background: transparent;
        color: #fff;
        border: 2px solid rgba(255, 255, 255, 0.7);
        border-radius: var(--radius-md);
        padding: 0.65rem 1.6rem;
        font-size: 0.95rem;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.25s ease;
    }
    .btn-outline-light:hover {
        background: rgba(255, 255, 255, 0.12);
        color: #fff;
        border-color: #fff;
    }
    .btn-sm {
        padding: 0.45rem 1.1rem;
        font-size: 0.85rem;
        border-radius: 6px;
    }
    /* ===== Top Toolbar ===== */
    .top-toolbar {
        background: var(--color-bg-dark-2);
        height: 36px;
        color: rgba(255, 255, 255, 0.65);
        font-size: 0.72rem;
    }
    .top-toolbar .container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        height: 100%;
    }
    .top-toolbar a {
        color: rgba(255, 255, 255, 0.65);
        margin-left: 16px;
        transition: color 0.2s;
    }
    .top-toolbar a:hover {
        color: var(--color-primary);
    }
    .toolbar-left i {
        color: var(--color-accent);
        margin-right: 4px;
    }
    /* ===== Header Main ===== */
    .header-main {
        background: var(--color-bg-dark);
        height: 72px;
        display: flex;
        align-items: center;
    }
    .header-main .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
    }
    .header-logo {
        flex-shrink: 0;
    }
    .logo-link {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .brand-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 42px;
        height: 42px;
        background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
        border-radius: 10px;
        color: #fff;
        font-family: var(--font-num);
        font-size: 1.1rem;
        font-weight: 800;
        letter-spacing: 0.02em;
        box-shadow: 0 4px 14px rgba(230, 56, 124, 0.3);
    }
    .brand-group {
        display: flex;
        flex-direction: column;
        line-height: 1.1;
    }
    .brand-text {
        color: #fff;
        font-size: 1.2rem;
        font-weight: 700;
        letter-spacing: 0.01em;
    }
    .brand-sub {
        color: rgba(255, 255, 255, 0.45);
        font-family: var(--font-num);
        font-size: 0.7rem;
        letter-spacing: 0.28em;
        text-transform: uppercase;
    }
    .header-search {
        flex: 1;
        display: flex;
        justify-content: center;
        min-width: 0;
    }
    .search-wrapper {
        display: flex;
        align-items: center;
        width: min(520px, 40vw);
        height: 44px;
        background: #fff;
        border-radius: 24px;
        overflow: hidden;
        transition: box-shadow 0.25s ease;
    }
    .search-wrapper:focus-within {
        box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.25);
    }
    .search-icon {
        color: var(--color-secondary);
        font-size: 1.1rem;
        padding-left: 16px;
        padding-right: 8px;
    }
    .search-input {
        flex: 1;
        border: none;
        outline: none;
        font-size: 0.95rem;
        color: var(--text-main);
        background: transparent;
        min-width: 0;
        padding: 0 4px;
    }
    .search-input::placeholder {
        color: #9AA3B2;
    }
    .search-btn {
        background: var(--color-secondary);
        color: #fff;
        border: none;
        padding: 0 22px;
        height: 44px;
        border-radius: 24px;
        font-size: 0.85rem;
        font-weight: 600;
        cursor: pointer;
        white-space: nowrap;
        transition: background 0.25s;
    }
    .search-btn:hover {
        background: #5a2fd8;
    }
    .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }
    .cart-btn {
        position: relative;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 42px;
        height: 42px;
        border-radius: 10px;
        background: rgba(255, 255, 255, 0.08);
        color: #fff;
        font-size: 1.2rem;
        transition: background 0.25s;
    }
    .cart-btn:hover {
        background: rgba(255, 255, 255, 0.16);
        color: #fff;
    }
    .cart-badge {
        position: absolute;
        top: -4px;
        right: -4px;
        background: var(--color-accent);
        color: #1A2233;
        font-size: 0.65rem;
        font-weight: 800;
        min-width: 18px;
        height: 18px;
        border-radius: 9px;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 0 4px;
    }
    /* ===== Main Nav ===== */
    .main-nav {
        background: #080F18;
        min-height: 44px;
    }
    .main-nav .container {
        display: flex;
        justify-content: center;
    }
    .nav-list {
        display: flex;
        list-style: none;
        margin: 0;
        padding: 0;
        gap: 0;
    }
    .nav-item {
        margin: 0;
    }
    .nav-link {
        display: inline-block;
        color: rgba(255, 255, 255, 0.75);
        font-size: 0.88rem;
        font-weight: 500;
        padding: 0 26px;
        line-height: 44px;
        position: relative;
        transition: color 0.25s;
    }
    .nav-link::after {
        content: "";
        position: absolute;
        left: 50%;
        bottom: 0;
        width: 0;
        height: 3px;
        background: var(--color-primary);
        transition: width 0.3s ease, left 0.3s ease;
        border-radius: 3px 3px 0 0;
    }
    .nav-link:hover {
        color: #fff;
    }
    .nav-link:hover::after {
        width: 100%;
        left: 0;
    }
    .nav-link.active {
        color: #fff;
        font-weight: 600;
    }
    .nav-link.active::after {
        width: 100%;
        left: 0;
        background: var(--color-primary);
    }
    /* Sticky header */
    .site-header-sticky {
        position: sticky;
        top: 0;
        z-index: 1030;
        transition: box-shadow 0.25s;
    }
    .site-header-sticky.scrolled {
        box-shadow: 0 4px 16px rgba(14, 27, 44, 0.08);
        background: rgba(8, 15, 24, 0.96);
        backdrop-filter: blur(8px);
    }
    /* ===== Article Hero ===== */
    .article-hero {
        position: relative;
        background: linear-gradient(135deg, rgba(230, 56, 124, 0.18), rgba(108, 61, 244, 0.12)), url('/assets/images/backpic/back-1.webp') center/cover, var(--color-bg-dark);
        background-blend-mode: overlay;
        padding: 5.5rem 0 4.5rem;
        clip-path: polygon(0 0, 100% 0, 100% calc(100% - 40px), 0 100%);
        min-height: 44vh;
        display: flex;
        align-items: center;
    }
    .article-hero::before {
        content: "";
        position: absolute;
        top: -80px;
        right: -60px;
        width: 400px;
        height: 400px;
        background: radial-gradient(circle, rgba(108, 61, 244, 0.35), transparent 70%);
        border-radius: 50%;
        pointer-events: none;
        animation: float-glow 8s ease-in-out infinite;
    }
    @keyframes float-glow {
        0%,
        100% {
            transform: translateY(0);
        }
        50% {
            transform: translateY(-20px);
        }
    }
    .breadcrumb-nav {
        margin-bottom: 1.2rem;
    }
    .breadcrumb-nav a {
        color: rgba(255, 255, 255, 0.55);
        font-size: 0.8rem;
        transition: color 0.2s;
    }
    .breadcrumb-nav a:hover {
        color: var(--color-primary);
    }
    .breadcrumb-nav .sep {
        color: rgba(255, 255, 255, 0.35);
        margin: 0 6px;
    }
    .breadcrumb-nav .current {
        color: rgba(255, 255, 255, 0.8);
        font-size: 0.8rem;
    }
    .article-hero h1 {
        color: #fff;
        font-size: clamp(1.7rem, 3.2vw, 2.6rem);
        font-weight: 800;
        line-height: 1.35;
        letter-spacing: -0.02em;
        max-width: 760px;
        margin-bottom: 1rem;
        text-shadow: 0 2px 20px rgba(14, 27, 44, 0.4);
    }
    .article-meta {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 16px;
        color: rgba(255, 255, 255, 0.65);
        font-size: 0.85rem;
    }
    .article-meta .meta-item {
        display: inline-flex;
        align-items: center;
        gap: 5px;
    }
    .article-meta .meta-item i {
        color: rgba(255, 255, 255, 0.4);
    }
    .meta-tag {
        display: inline-block;
        background: var(--color-primary);
        color: #fff;
        font-size: 0.72rem;
        font-weight: 600;
        padding: 3px 12px;
        border-radius: 4px;
        letter-spacing: 0.03em;
    }
    /* ===== Article Main ===== */
    .article-main {
        padding: 3.5rem 0 4rem;
        background: #fff;
    }
    .article-container {
        max-width: 860px;
        margin: 0 auto;
    }
    .article-dynamic-content {
        font-size: 1.05rem;
        line-height: 1.9;
        color: #333A48;
    }
    .article-dynamic-content>*:not(:last-child) {
        margin-bottom: 1.8em;
    }
    .article-dynamic-content h2 {
        font-size: 1.35rem;
        font-weight: 700;
        color: var(--text-main);
        border-left: 3px solid var(--color-primary);
        padding-left: 14px;
        margin-top: 2.2em;
        margin-bottom: 1em;
        line-height: 1.4;
    }
    .article-dynamic-content h3 {
        font-size: 1.1rem;
        font-weight: 600;
        color: var(--text-main);
        margin-top: 1.8em;
        margin-bottom: 0.8em;
    }
    .article-dynamic-content h4 {
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-main);
        margin-top: 1.5em;
        margin-bottom: 0.6em;
    }
    .article-dynamic-content p {
        margin-bottom: 1.8em;
    }
    .article-dynamic-content ul,
    .article-dynamic-content ol {
        margin-bottom: 1.8em;
        padding-left: 1.4em;
    }
    .article-dynamic-content ul li,
    .article-dynamic-content ol li {
        margin-bottom: 0.5em;
        line-height: 1.8;
    }
    .article-dynamic-content ul li::marker {
        color: var(--color-primary);
    }
    .article-dynamic-content ol li::marker {
        color: var(--color-secondary);
        font-weight: 600;
    }
    .article-dynamic-content blockquote {
        border-left: 4px solid var(--color-secondary);
        background: var(--color-bg-light);
        font-style: italic;
        border-radius: var(--radius-md);
        padding: 16px 20px;
        margin: 1.8em 0;
        color: var(--text-sub);
    }
    .article-dynamic-content blockquote p {
        margin-bottom: 0;
    }
    .article-dynamic-content code {
        font-family: 'JetBrains Mono', Consolas, monospace;
        background: #F0F2F5;
        border-radius: var(--radius-sm);
        padding: 2px 6px;
        font-size: 0.9em;
        color: var(--color-primary-600);
    }
    .article-dynamic-content pre {
        background: #0E1B2C;
        color: #D7E1F0;
        border-radius: var(--radius-md);
        padding: 20px;
        overflow-x: auto;
        margin: 1.8em 0;
        font-size: 0.9rem;
        line-height: 1.7;
    }
    .article-dynamic-content pre code {
        background: transparent;
        color: inherit;
        padding: 0;
    }
    .article-dynamic-content table {
        width: 100%;
        border-collapse: collapse;
        margin: 1.8em 0;
        border-radius: var(--radius-md);
        overflow: hidden;
        font-size: 0.95rem;
    }
    .article-dynamic-content th {
        background: #F0F2F5;
        font-weight: 600;
        color: var(--text-main);
    }
    .article-dynamic-content th,
    .article-dynamic-content td {
        border: 1px solid var(--border-color);
        padding: 12px 16px;
        text-align: left;
    }
    .article-dynamic-content tr:nth-child(even) td {
        background: #FAFBFC;
    }
    .article-dynamic-content img {
        border-radius: var(--radius-md);
        max-width: 100%;
        height: auto;
        box-shadow: var(--shadow-card);
    }
    .article-dynamic-content a {
        color: var(--color-primary);
        text-decoration: underline;
        text-underline-offset: 3px;
    }
    .article-dynamic-content a:hover {
        color: var(--color-primary-600);
    }
    .article-dynamic-content figure {
        margin: 1.8em 0;
    }
    .article-dynamic-content figure img {
        width: 100%;
    }
    .article-dynamic-content figcaption {
        text-align: center;
        color: var(--text-mute);
        font-size: 0.8rem;
        margin-top: 8px;
    }
    /* TOC */
    .article-toc {
        background: var(--color-bg-light);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 24px;
        margin: 0 0 2.2em;
    }
    .article-toc .toc-title {
        font-size: 0.95rem;
        font-weight: 700;
        color: var(--text-main);
        margin-bottom: 12px;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .article-toc .toc-title i {
        color: var(--color-primary);
    }
    .article-toc ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .article-toc li {
        border-left: 2px solid var(--border-color);
        padding: 4px 0 4px 14px;
        margin-bottom: 2px;
        transition: border-color 0.2s;
    }
    .article-toc li:hover {
        border-left-color: var(--color-primary);
    }
    .article-toc li a {
        color: var(--text-sub);
        font-size: 0.9rem;
        transition: color 0.2s;
    }
    .article-toc li a:hover {
        color: var(--color-primary);
    }
    /* Not Found */
    .not-found {
        text-align: center;
        padding: 60px 20px;
        background: var(--color-bg-light);
        border-radius: var(--radius-lg);
        border: 1px dashed var(--border-color);
    }
    .not-found i {
        font-size: 3rem;
        color: var(--text-mute);
        margin-bottom: 16px;
    }
    .not-found h3 {
        font-size: 1.3rem;
        font-weight: 700;
        margin-bottom: 8px;
    }
    .not-found p {
        color: var(--text-sub);
        margin-bottom: 20px;
    }
    /* Article Tags & Share */
    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin: 2.5rem 0 1.5rem;
        padding-top: 1.8rem;
        border-top: 1px solid var(--border-color);
    }
    .article-tags .tag {
        display: inline-block;
        background: transparent;
        border: 1.5px solid var(--color-secondary);
        color: var(--color-secondary);
        font-size: 0.78rem;
        font-weight: 500;
        padding: 4px 14px;
        border-radius: 20px;
        transition: all 0.25s;
    }
    .article-tags .tag:hover {
        background: var(--color-secondary);
        color: #fff;
    }
    .article-share {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 14px;
        padding: 16px 20px;
        background: var(--color-bg-light);
        border-radius: var(--radius-md);
        margin-bottom: 2.2rem;
    }
    .article-share .share-label {
        font-size: 0.85rem;
        font-weight: 600;
        color: var(--text-main);
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .share-icons {
        display: flex;
        gap: 8px;
    }
    .share-icons a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        border: 1px solid var(--border-color);
        color: var(--text-sub);
        font-size: 0.9rem;
        transition: all 0.25s;
        background: #fff;
    }
    .share-icons a:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
        background: rgba(230, 56, 124, 0.06);
    }
    .share-icons a.copy-link {
        cursor: pointer;
        font-size: 0.85rem;
    }
    /* Prev Next */
    .article-prev-next {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
        margin-bottom: 0;
    }
    .prev-next-card {
        background: #fff;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 18px 20px;
        transition: all 0.25s ease;
        display: block;
    }
    .prev-next-card:hover {
        border-color: var(--color-primary);
        box-shadow: var(--shadow-card);
        transform: translateY(-2px);
    }
    .prev-next-card .pn-label {
        font-size: 0.75rem;
        color: var(--text-mute);
        margin-bottom: 6px;
        display: block;
    }
    .prev-next-card .pn-title {
        font-size: 0.95rem;
        font-weight: 600;
        color: var(--text-main);
        line-height: 1.5;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .prev-next-card.next {
        text-align: right;
    }
    /* ===== Related Articles ===== */
    .related-articles {
        background: var(--color-bg-light);
        padding: 4rem 0;
    }
    .related-articles .section-heading {
        margin-bottom: 2rem;
    }
    .related-articles .section-heading h3 {
        font-size: 1.4rem;
        font-weight: 700;
        color: var(--text-main);
    }
    .related-articles .section-heading .en-note {
        font-family: var(--font-num);
        font-size: 0.75rem;
        color: var(--text-mute);
        letter-spacing: 0.1em;
        text-transform: uppercase;
        margin-top: 2px;
    }
    .related-slider {
        display: flex;
        gap: 1.5rem;
        overflow-x: auto;
        padding-bottom: 1rem;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
    }
    .related-slider::-webkit-scrollbar {
        height: 6px;
    }
    .related-slider::-webkit-scrollbar-track {
        background: #E5E9F0;
        border-radius: 3px;
    }
    .related-slider::-webkit-scrollbar-thumb {
        background: var(--color-primary);
        border-radius: 3px;
    }
    .related-card {
        flex: 0 0 260px;
        scroll-snap-align: start;
        background: #fff;
        border-radius: var(--radius-lg);
        border: 1px solid var(--border-color);
        overflow: hidden;
        transition: all 0.25s ease;
        display: block;
    }
    .related-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
    }
    .related-card img {
        width: 100%;
        height: 140px;
        object-fit: cover;
        display: block;
    }
    .related-card .related-info {
        padding: 14px 16px;
    }
    .related-card .related-info h4 {
        font-size: 0.9rem;
        font-weight: 600;
        line-height: 1.5;
        color: var(--text-main);
        margin-bottom: 6px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-card .related-info .related-date {
        font-size: 0.78rem;
        color: var(--text-mute);
    }
    /* ===== Article CTA ===== */
    .article-cta {
        background: var(--color-bg-dark);
        padding: 2.5rem 0;
        position: relative;
        overflow: hidden;
    }
    .article-cta::before {
        content: "";
        position: absolute;
        left: -60px;
        bottom: -80px;
        width: 260px;
        height: 260px;
        background: radial-gradient(circle, rgba(108, 61, 244, 0.25), transparent 70%);
        border-radius: 50%;
    }
    .article-cta .container {
        position: relative;
        z-index: 1;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 16px;
    }
    .article-cta h3 {
        color: #fff;
        font-size: 1.4rem;
        font-weight: 700;
        margin: 0;
    }
    .article-cta p {
        color: rgba(255, 255, 255, 0.6);
        margin: 4px 0 0;
        font-size: 0.9rem;
    }
    /* ===== Footer ===== */
    .site-footer {
        background: var(--color-bg-dark-2);
        color: var(--text-mute);
        padding: 4rem 0 0;
        font-size: 0.88rem;
    }
    .footer-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 14px;
    }
    .footer-brand .brand-icon {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
    }
    .footer-brand .brand-text {
        font-size: 1.1rem;
        font-weight: 700;
        color: #fff;
    }
    .footer-desc {
        color: rgba(255, 255, 255, 0.55);
        line-height: 1.7;
        font-size: 0.85rem;
        margin-bottom: 18px;
    }
    .footer-social {
        display: flex;
        gap: 8px;
    }
    .footer-social a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 34px;
        height: 34px;
        border-radius: 8px;
        background: rgba(255, 255, 255, 0.06);
        color: rgba(255, 255, 255, 0.7);
        border: 1px solid rgba(255, 255, 255, 0.08);
        transition: all 0.25s;
        font-size: 0.85rem;
    }
    .footer-social a:hover {
        background: var(--color-primary);
        color: #fff;
        border-color: var(--color-primary);
    }
    .site-footer h5 {
        color: #fff;
        font-size: 0.95rem;
        font-weight: 600;
        margin-bottom: 18px;
    }
    .footer-links {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .footer-links li {
        margin-bottom: 10px;
    }
    .footer-links a {
        color: rgba(255, 255, 255, 0.55);
        font-size: 0.85rem;
        transition: color 0.25s, padding-left 0.25s;
    }
    .footer-links a:hover {
        color: var(--color-primary);
        padding-left: 4px;
    }
    .footer-contact p {
        margin-bottom: 10px;
        color: rgba(255, 255, 255, 0.55);
        font-size: 0.85rem;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .footer-contact p i {
        color: var(--color-primary);
    }
    .footer-subscribe {
        margin-top: 16px;
    }
    .footer-subscribe input {
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.1);
        color: #fff;
        border-radius: 8px;
        padding: 8px 14px;
        font-size: 0.85rem;
        width: 200px;
        outline: none;
        transition: border-color 0.25s, box-shadow 0.25s;
    }
    .footer-subscribe input::placeholder {
        color: rgba(255, 255, 255, 0.35);
    }
    .footer-subscribe input:focus {
        border-color: var(--color-primary);
        box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.15);
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        padding: 1.2rem 0;
        margin-top: 3rem;
        font-size: 0.78rem;
        color: rgba(255, 255, 255, 0.4);
    }
    .footer-bottom .container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
    }
    .footer-bottom a {
        color: rgba(255, 255, 255, 0.4);
        margin-left: 16px;
        transition: color 0.2s;
    }
    .footer-bottom a:hover {
        color: var(--color-primary);
    }
    /* ===== Responsive ===== */
    @media (max-width: 991.98px) {
        .search-wrapper {
            width: 300px;
        }
        .header-main .container {
            gap: 10px;
        }
        .btn-main {
            padding: 0.65rem 1.2rem;
            font-size: 0.88rem;
        }
        .article-hero {
            padding: 4rem 0 3.5rem;
            min-height: auto;
        }
    }
    @media (max-width: 767.98px) {
        .top-toolbar {
            display: none;
        }
        .header-main {
            height: 60px;
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            font-size: 0.9rem;
        }
        .brand-text {
            font-size: 1rem;
        }
        .brand-sub {
            display: none;
        }
        .header-search {
            display: none;
        }
        .header-actions .btn-main {
            display: none;
        }
        .main-nav .container {
            justify-content: flex-start;
            overflow-x: auto;
        }
        .nav-list {
            flex-wrap: nowrap;
        }
        .nav-link {
            padding: 0 16px;
            white-space: nowrap;
        }
        .article-hero {
            padding: 3rem 0 3.5rem;
            clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), 0 100%);
        }
        .article-hero h1 {
            font-size: 1.4rem;
        }
        .article-meta {
            gap: 10px;
            font-size: 0.78rem;
            flex-wrap: wrap;
        }
        .article-main {
            padding: 2rem 0 2.5rem;
        }
        .article-dynamic-content {
            font-size: 1rem;
            line-height: 1.85;
        }
        .article-dynamic-content h2 {
            font-size: 1.15rem;
        }
        .article-dynamic-content table {
            display: block;
            overflow-x: auto;
            white-space: nowrap;
        }
        .article-tags {
            gap: 6px;
        }
        .article-share {
            padding: 14px;
        }
        .article-prev-next {
            grid-template-columns: 1fr;
            gap: 12px;
        }
        .related-card {
            flex: 0 0 220px;
        }
        .article-cta .container {
            flex-direction: column;
            align-items: flex-start;
        }
        .footer-bottom .container {
            flex-direction: column;
            align-items: flex-start;
        }
    }
    @media (max-width: 400px) {
        .search-wrapper {
            width: 240px;
        }
        .article-dynamic-content {
            font-size: 0.95rem;
        }
        .related-slider {
            gap: 0.8rem;
        }
        .related-card {
            flex: 0 0 200px;
        }
    }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #E6387C;
            --color-primary-600: #C2185B;
            --color-secondary: #6C3DF4;
            --color-bg-dark: #0E1B2C;
            --color-bg-deep: #0A1420;
            --color-bg-light: #F5F7FA;
            --color-bg-white: #FFFFFF;
            --color-accent: #FFC53D;
            --color-text: #1A2233;
            --color-text-secondary: #5A6478;
            --color-text-muted: #8E98AB;
            --color-border: #E5E9F0;
            --color-success: #16B8A6;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-tag: 4px;
            --radius-pill: 24px;
            --shadow-card: 0 4px 20px rgba(14, 27, 44, 0.06);
            --shadow-hover: 0 8px 32px rgba(230, 56, 124, 0.12);
            --shadow-nav: 0 4px 16px rgba(14, 27, 44, 0.08);
            --transition: 0.25s ease;
            --font-family: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
            --font-numeric: "DIN Alternate", "Barlow Condensed", "Arial Narrow", sans-serif;
        }

        /* ===== Base Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.85;
            color: var(--color-text);
            background: var(--color-bg-light);
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-primary-600);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1280px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Buttons ===== */
        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--color-primary);
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            padding: 0.75rem 1.8rem;
            border: none;
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
        }
        .btn-main:hover {
            background: var(--color-primary-600);
            color: #fff;
            box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.2);
            transform: translateY(-1px);
        }
        .btn-main:active {
            transform: translateY(1px);
        }
        .btn-main:focus-visible,
        .btn-outline:focus-visible,
        .btn-accent:focus-visible {
            outline: 3px solid rgba(230, 56, 124, 0.3);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--color-secondary);
            font-size: 0.95rem;
            font-weight: 600;
            padding: 0.7rem 1.6rem;
            border: 2px solid var(--color-secondary);
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: background var(--transition), color var(--transition), border-color var(--transition);
        }
        .btn-outline:hover {
            background: rgba(108, 61, 244, 0.1);
            color: var(--color-secondary);
            border-color: var(--color-secondary);
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--color-accent);
            color: #111;
            font-size: 0.95rem;
            font-weight: 700;
            padding: 0.7rem 1.6rem;
            border: 2px solid var(--color-accent);
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: background var(--transition), color var(--transition), box-shadow var(--transition);
        }
        .btn-accent:hover {
            background: #E0A800;
            border-color: #E0A800;
            color: #111;
            box-shadow: 0 0 0 3px rgba(255, 197, 61, 0.3);
        }
        .btn-sm {
            padding: 0.45rem 1.1rem;
            font-size: 0.85rem;
        }

        /* ===== Header Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-nav);
            backdrop-filter: blur(8px);
            background: rgba(14, 27, 44, 0.96);
        }
        .top-bar {
            background: var(--color-bg-deep);
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.72rem;
            height: 36px;
            display: flex;
            align-items: center;
        }
        .top-bar a {
            color: rgba(255, 255, 255, 0.55);
            margin-left: 18px;
            transition: color var(--transition);
        }
        .top-bar a:hover {
            color: #fff;
        }
        .main-header {
            background: var(--color-bg-dark);
            padding: 12px 0;
        }
        .main-header-inner {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .brand-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-numeric);
            font-weight: 800;
            font-size: 0.95rem;
            color: #fff;
            letter-spacing: 0.02em;
        }
        .brand-text {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
            letter-spacing: -0.01em;
        }
        .brand-sub {
            display: block;
            font-size: 0.62rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.18em;
            text-transform: uppercase;
        }
        .header-search {
            flex: 1;
            display: flex;
            align-items: center;
            max-width: 520px;
            background: #fff;
            border-radius: var(--radius-pill);
            height: 44px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
            transition: box-shadow var(--transition);
        }
        .header-search:focus-within {
            box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.25);
        }
        .header-search .search-icon {
            padding-left: 16px;
            color: var(--color-secondary);
            font-size: 1.1rem;
            display: flex;
            align-items: center;
        }
        .header-search input {
            flex: 1;
            border: none;
            outline: none;
            padding: 0 12px;
            font-size: 1rem;
            color: var(--color-text);
            background: transparent;
        }
        .header-search input::placeholder {
            color: #9AA3B2;
        }
        .header-search .search-btn {
            background: var(--color-secondary);
            border: none;
            color: #fff;
            padding: 0 20px;
            height: 44px;
            border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition);
        }
        .header-search .search-btn:hover {
            background: #5730d6;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-left: auto;
            flex-shrink: 0;
        }
        .header-actions .btn-main {
            white-space: nowrap;
        }
        .cart-btn {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            position: relative;
            transition: background var(--transition);
        }
        .cart-btn:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #fff;
        }
        .cart-btn .badge-dot {
            position: absolute;
            top: -3px;
            right: -3px;
            min-width: 17px;
            height: 17px;
            background: var(--color-primary);
            color: #fff;
            font-size: 0.62rem;
            font-weight: 700;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 4px;
        }
        .search-toggle-btn {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: #fff;
            font-size: 1.1rem;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }
        .main-nav {
            background: #080F18;
        }
        .nav-list {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 0;
        }
        .nav-item {
            margin: 0;
        }
        .nav-link {
            display: block;
            padding: 12px 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: var(--color-primary);
            border-radius: 3px 3px 0 0;
            transition: width var(--transition);
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link:hover::after {
            width: 30px;
        }
        .nav-link.active {
            color: #fff;
        }
        .nav-link.active::after {
            width: 100%;
        }

        /* Mobile drawer */
        .mobile-drawer-backdrop {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1040;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }
        .mobile-drawer-backdrop.show {
            opacity: 1;
            visibility: visible;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: -280px;
            width: 280px;
            height: 100vh;
            background: var(--color-bg-dark);
            z-index: 1050;
            padding: 24px 20px;
            transition: left 0.35s ease;
            overflow-y: auto;
        }
        .mobile-drawer.show {
            left: 0;
        }
        .mobile-drawer .drawer-nav {
            display: flex;
            flex-direction: column;
        }
        .mobile-drawer .drawer-nav a {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1rem;
            line-height: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            gap: 10px;
            transition: padding-left var(--transition);
        }
        .mobile-drawer .drawer-nav a:hover,
        .mobile-drawer .drawer-nav a.active {
            color: var(--color-primary);
            padding-left: 8px;
        }
        .mobile-drawer .drawer-search {
            margin-bottom: 18px;
            display: flex;
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-pill);
            height: 40px;
            align-items: center;
            overflow: hidden;
        }
        .mobile-drawer .drawer-search input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            padding: 0 14px;
            font-size: 0.9rem;
        }
        .mobile-drawer .drawer-search input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .mobile-drawer .drawer-search button {
            background: var(--color-secondary);
            border: none;
            color: #fff;
            height: 40px;
            padding: 0 14px;
            border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
        }
        .drawer-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            border: none;
            color: #fff;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        /* ===== Hero / Category Banner ===== */
        .category-banner {
            background: var(--color-bg-dark);
            position: relative;
            padding: 90px 0 90px;
            min-height: 240px;
            display: flex;
            align-items: center;
            color: #fff;
            overflow: hidden;
            clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), 0 100%);
        }
        .category-banner.bg-image {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center center;
        }
        .category-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(14, 27, 44, 0.95) 0%, rgba(14, 27, 44, 0.78) 100%);
        }
        .category-banner .banner-decoration {
            position: absolute;
            right: 8%;
            top: 20%;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(108, 61, 244, 0.35), transparent 70%);
            pointer-events: none;
        }
        .category-banner .banner-watermark {
            position: absolute;
            right: 3%;
            bottom: 8%;
            font-family: var(--font-numeric);
            font-size: clamp(6rem, 12vw, 10rem);
            font-weight: 800;
            color: rgba(255, 255, 255, 0.04);
            line-height: 1;
            pointer-events: none;
            letter-spacing: 0.02em;
        }
        .category-banner .banner-inner {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }
        .category-banner h1 {
            font-size: clamp(1.9rem, 3.4vw, 2.8rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            color: #fff;
        }
        .category-banner p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: 20px;
        }
        .category-banner .breadcrumb-line {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .category-banner .breadcrumb-line a {
            color: rgba(255, 255, 255, 0.45);
            transition: color var(--transition);
        }
        .category-banner .breadcrumb-line a:hover {
            color: var(--color-primary);
        }
        .category-banner .breadcrumb-line .separator {
            color: rgba(255, 255, 255, 0.2);
        }

        /* ===== Sub Nav Tabs ===== */
        .sub-nav-section {
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 16px 0;
        }
        .sub-nav-wrap {
            display: flex;
            gap: 10px;
            overflow-x: auto;
            padding-bottom: 2px;
            scrollbar-width: thin;
        }
        .sub-tab {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 22px;
            border-radius: 20px;
            background: var(--color-bg-light);
            color: var(--color-text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid transparent;
            white-space: nowrap;
            transition: all var(--transition);
            cursor: pointer;
        }
        .sub-tab:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: #fff;
        }
        .sub-tab.active {
            background: var(--color-primary);
            color: #fff;
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 80px 0;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 40px;
            gap: 20px;
            flex-wrap: wrap;
        }
        .section-title-wrap {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }
        .section-title-bar {
            width: 4px;
            height: 36px;
            background: var(--color-primary);
            border-radius: 4px;
            flex-shrink: 0;
        }
        .section-title-wrap h2 {
            font-size: clamp(1.55rem, 2.6vw, 2rem);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.25;
            color: var(--color-text);
            margin-bottom: 2px;
        }
        .section-title-wrap .section-title-en {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            font-family: var(--font-numeric);
        }
        .section-link-more {
            color: var(--color-text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition);
        }
        .section-link-more:hover {
            color: var(--color-primary);
        }

        /* ===== List Row Cards ===== */
        .category-list-section {
            background: var(--color-bg-light);
            padding: 70px 0;
        }
        .list-rows {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .list-row-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            display: flex;
            align-items: stretch;
            min-height: 120px;
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
            position: relative;
        }
        .list-row-card::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--color-secondary);
            transition: width var(--transition);
            z-index: 1;
        }
        .list-row-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .list-row-card:hover::before {
            width: 8px;
            background: var(--color-primary);
        }
        .list-row-thumb {
            width: 160px;
            min-height: 120px;
            flex-shrink: 0;
            background: #F0F2F5;
        }
        .list-row-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .list-row-body {
            flex: 1;
            padding: 18px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-width: 0;
        }
        .list-row-tag {
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--color-primary);
            letter-spacing: 0.05em;
            margin-bottom: 4px;
        }
        .list-row-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 5px;
            line-height: 1.4;
            transition: color var(--transition);
        }
        .list-row-card:hover .list-row-title {
            color: var(--color-primary);
        }
        .list-row-desc {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .list-row-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 8px;
            font-size: 0.75rem;
            color: var(--color-text-muted);
        }
        .list-row-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .list-row-meta i {
            color: var(--color-secondary);
            font-size: 0.8rem;
        }
        .list-row-price {
            flex-shrink: 0;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            justify-content: center;
            padding: 0 24px;
            gap: 8px;
        }
        .price-tag {
            background: var(--color-accent);
            color: #111;
            font-family: var(--font-numeric);
            font-weight: 700;
            font-size: 1.05rem;
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            white-space: nowrap;
        }
        .list-row-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-bg-light);
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: all var(--transition);
            cursor: pointer;
        }
        .list-row-btn:hover {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
        }

        /* ===== Tech Specs / Compare ===== */
        .specs-section {
            background: var(--color-bg-dark);
            color: #fff;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .specs-section::before {
            content: "";
            position: absolute;
            top: -100px;
            right: -100px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(230, 56, 124, 0.2), transparent 70%);
            pointer-events: none;
        }
        .specs-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }
        .spec-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            padding: 30px 24px;
            transition: background var(--transition), border-color var(--transition);
            position: relative;
        }
        .spec-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(230, 56, 124, 0.4);
        }
        .spec-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            margin-bottom: 18px;
        }
        .spec-card h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: #fff;
        }
        .spec-card p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
        }
        .spec-highlight {
            font-family: var(--font-numeric);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        /* ===== Guide & Download ===== */
        .extra-section {
            background: var(--color-bg-light);
            padding: 70px 0;
        }
        .guide-card,
        .download-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 36px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            height: 100%;
        }
        .guide-card h3,
        .download-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 24px;
            position: relative;
            padding-left: 16px;
        }
        .guide-card h3::before,
        .download-card h3::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 22px;
            background: var(--color-primary);
            border-radius: 4px;
        }
        .guide-steps {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .guide-step {
            display: flex;
            gap: 16px;
        }
        .guide-step-num {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(230, 56, 124, 0.1);
            color: var(--color-primary);
            font-family: var(--font-numeric);
            font-weight: 800;
            font-size: 1.05rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .guide-step h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 3px;
        }
        .guide-step p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .download-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .download-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 16px;
            background: var(--color-bg-light);
            border-radius: var(--radius-btn);
            border: 1px solid solid;
            border: 1px solid transparent;
            transition: border-color var(--transition), background var(--transition);
        }
        .download-item:hover {
            border-color: var(--color-secondary);
            background: rgba(108, 61, 244, 0.04);
        }
        .download-item .dl-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(108, 61, 244, 0.1);
            color: var(--color-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .download-item .dl-info {
            flex: 1;
            min-width: 0;
        }
        .download-item .dl-name {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .download-item .dl-size {
            font-size: 0.72rem;
            color: var(--color-text-muted);
        }
        .download-item .dl-btn {
            padding: 5px 14px;
            font-size: 0.78rem;
            white-space: nowrap;
        }

        /* ===== CTA Card ===== */
        .cta-zone {
            background: var(--color-bg-dark);
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-zone::before {
            content: "";
            position: absolute;
            left: -100px;
            bottom: -140px;
            width: 340px;
            height: 340px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(108, 61, 244, 0.3), transparent 70%);
        }
        .cta-card {
            background: #fff;
            border-radius: 16px;
            padding: 48px 48px;
            display: flex;
            align-items: center;
            gap: 48px;
            position: relative;
            box-shadow: 0 12px 48px rgba(0, 0, 0, 0.3);
            flex-wrap: wrap;
        }
        .cta-card-content {
            flex: 1;
            min-width: 280px;
        }
        .cta-card-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .cta-card-content p {
            color: var(--color-text-secondary);
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        .cta-card-action {
            flex-shrink: 0;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--color-bg-light);
            padding: 70px 0;
        }
        .faq-item-wrapper {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item-wrapper:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            width: 100%;
            background: #fff;
            border: none;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            transition: background var(--transition);
            text-align: left;
        }
        .faq-question:hover {
            background: rgba(230, 56, 124, 0.03);
        }
        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text-secondary);
            flex-shrink: 0;
            transition: all var(--transition);
        }
        .faq-question[aria-expanded="true"] .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 24px 20px 38px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }
        .faq-contact-line {
            text-align: center;
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            margin-top: 20px;
        }
        .faq-contact-line a {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-deep);
            color: var(--color-text-muted);
            padding-top: 60px;
            font-size: 0.85rem;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 18px;
            position: relative;
            padding-left: 12px;
        }
        .site-footer h5::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 16px;
            background: var(--color-primary);
            border-radius: 3px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-brand .brand-icon {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
        }
        .footer-brand .brand-text {
            font-size: 1.15rem;
            font-weight: 800;
            color: #fff;
        }
        .footer-desc {
            font-size: 0.85rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 20px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.85rem;
            transition: color var(--transition), padding-left var(--transition);
            display: inline-block;
        }
        .footer-links a:hover {
            color: var(--color-primary);
            padding-left: 6px;
        }
        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.85rem;
        }
        .footer-contact i {
            color: var(--color-primary);
            width: 18px;
            text-align: center;
        }
        .footer-subscribe {
            margin-top: 18px;
        }
        .footer-subscribe input {
            flex: 1;
            min-width: 160px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-btn);
            height: 38px;
            padding: 0 14px;
            font-size: 0.82rem;
            color: #fff;
            outline: none;
            transition: border-color var(--transition);
        }
        .footer-subscribe input::placeholder {
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-subscribe input:focus {
            border-color: var(--color-primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 40px;
            padding: 22px 0;
        }
        .footer-bottom-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom-links {
            display: flex;
            gap: 16px;
        }
        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom-links a:hover {
            color: var(--color-primary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .header-search {
                max-width: 300px;
            }
        }
        @media (max-width: 991px) {
            .top-bar {
                display: none;
            }
            .header-search {
                display: none;
            }
            .search-toggle-btn {
                display: flex;
            }
            .header-actions .btn-main {
                display: none;
            }
            .main-nav {
                display: none;
            }
            .main-header-inner {
                justify-content: space-between;
            }
            .mobile-search-expand {
                display: block;
                width: 100%;
                padding: 10px 20px;
                background: var(--color-bg-dark);
            }
        }
        @media (min-width: 992px) {
            .mobile-drawer,
            .mobile-drawer-backdrop,
            .drawer-close {
                display: none;
            }
            .mobile-search-expand {
                display: none !important;
            }
        }
        @media (max-width: 767px) {
            .section-block {
                padding: 50px 0;
            }
            .list-row-card {
                flex-wrap: wrap;
            }
            .list-row-thumb {
                width: 100%;
                height: 140px;
            }
            .list-row-body {
                width: 100%;
                flex: 0 0 100%;
                padding: 16px;
            }
            .list-row-price {
                display: flex;
                flex-direction: row;
                align-items: center;
                justify-content: space-between;
                width: 100%;
                padding: 0 16px 16px;
                gap: 12px;
            }
            .cta-card {
                padding: 32px 24px;
                gap: 20px;
            }
            .guide-card,
            .download-card {
                padding: 24px;
            }
            .category-banner {
                padding: 60px 0 70px;
            }
            .specs-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 575px) {
            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .brand-text {
                font-size: 1.1rem;
            }
            .brand-sub {
                font-size: 0.55rem;
            }
            .specs-grid {
                grid-template-columns: 1fr;
            }
            .cta-card-action {
                width: 100%;
            }
            .cta-card-action .btn-main,
            .cta-card-action .btn-outline {
                width: 100%;
            }
            .footer-subscribe input {
                min-width: 100%;
            }
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
:root {
    --color-primary: #E6387C;
    --color-primary-600: #C2185B;
    --color-secondary: #6C3DF4;
    --color-bg-dark: #0E1B2C;
    --color-bg-deep: #0A1420;
    --color-bg-light: #F5F7FA;
    --color-bg-white: #FFFFFF;
    --color-accent: #FFC53D;
    --color-success: #16B8A6;
    --color-text: #1A2233;
    --color-text-secondary: #5A6478;
    --color-text-muted: #8E98AB;
    --color-border: #E5E9F0;
    --radius-lg: 12px;
    --radius-md: 8px;
    --radius-sm: 4px;
    --shadow-card: 0 4px 20px rgba(14,27,44,0.06);
    --shadow-hover: 0 8px 32px rgba(230,56,124,0.12);
    --transition: 0.25s ease;
}

/* ===== Reset / Base ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
    font-size: 1rem;
    line-height: 1.85;
    color: var(--color-text);
    background: var(--color-bg-white);
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-primary);
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

input {
    font-family: inherit;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

:focus-visible {
    outline: 3px solid rgba(230, 56, 124, 0.3);
    outline-offset: 2px;
}

/* ===== 顶部工具条 ===== */
.topbar {
    background: var(--color-bg-deep);
    height: 36px;
    font-size: 0.72rem;
    color: rgba(255, 255, 255, 0.6);
}

.topbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.topbar-left span {
    margin-right: 18px;
    letter-spacing: 0.02em;
}

.topbar-right a {
    color: rgba(255, 255, 255, 0.6);
    margin-left: 18px;
}

.topbar-right a:hover {
    color: var(--color-primary);
}

/* ===== 主头部（搜索主导） ===== */
.header-main {
    background: var(--color-bg-dark);
    padding: 14px 0;
}

.header-main .container {
    display: flex;
    align-items: center;
    gap: 24px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    flex-shrink: 0;
}

.brand-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: 0.85rem;
    letter-spacing: 0.04em;
    font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
    box-shadow: 0 0 20px rgba(230, 56, 124, 0.35);
}

.brand-text-group {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.brand-text {
    font-size: 1.45rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.brand-sub {
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.24em;
    text-transform: uppercase;
    font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
}

/* 搜索框 */
.search-wrap {
    flex: 1;
    max-width: 520px;
    min-width: 280px;
    margin: 0 auto;
}

.search-form {
    display: flex;
    align-items: center;
    background: #fff;
    border-radius: 24px;
    height: 44px;
    padding: 0 6px 0 16px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
    transition: box-shadow var(--transition);
}

.search-form:focus-within {
    box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.3);
}

.search-form .bi-search {
    color: var(--color-secondary);
    font-size: 1rem;
    margin-right: 10px;
}

.search-form input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 0.92rem;
    color: var(--color-text);
    background: transparent;
}

.search-form input::placeholder {
    color: #9AA3B2;
}

.search-form button {
    background: var(--color-secondary);
    color: #fff;
    border-radius: 0 20px 20px 0;
    height: 34px;
    padding: 0 18px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: background var(--transition);
    margin-right: -2px;
}

.search-form button:hover {
    background: var(--color-primary);
}

/* 头部右侧动作 */
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.btn-main {
    background: var(--color-primary);
    color: #fff;
    border-radius: 8px;
    padding: 0.6rem 1.4rem;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
    white-space: nowrap;
}

.btn-main:hover {
    background: var(--color-primary-600);
    color: #fff;
    box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.2);
    transform: translateY(-1px);
}

.btn-main:active {
    transform: translateY(1px);
}

.cart-btn {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    position: relative;
    transition: background var(--transition);
}

.cart-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-accent);
}

.cart-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 18px;
    height: 18px;
    background: var(--color-accent);
    color: #111;
    font-size: 0.65rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 移动端图标 */
.mobile-icons {
    display: none;
    gap: 8px;
}

.mobile-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
}

/* ===== 主导航 ===== */
.main-nav {
    background: #080F18;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    justify-content: center;
}

.nav-item {
    margin: 0;
}

.nav-link {
    display: block;
    padding: 12px 28px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    transition: color var(--transition);
    white-space: nowrap;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 28px;
    right: 28px;
    bottom: 0;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.nav-link:hover {
    color: #fff;
}

.nav-link:hover::after {
    transform: scaleX(1);
}

.nav-link.active {
    color: #fff;
}

.nav-link.active::after {
    transform: scaleX(1);
}

/* ===== 分类页横幅 ===== */
.page-banner {
    background: var(--color-bg-dark);
    padding: 72px 0 64px;
    position: relative;
    overflow: hidden;
    background-image: linear-gradient(rgba(14, 27, 44, 0.88), rgba(14, 27, 44, 0.92)), url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center;
    text-align: center;
}

.page-banner::before {
    content: "";
    position: absolute;
    top: -80px;
    right: -40px;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(255, 197, 61, 0.22), transparent 70%);
    border-radius: 50%;
    animation: floatGlow 8s ease-in-out infinite alternate;
}

.page-banner::after {
    content: "VII";
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
    font-size: 16rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.04);
    letter-spacing: 0.1em;
    pointer-events: none;
    z-index: 0;
}

@keyframes floatGlow {
    0% { transform: translateY(-10px) scale(1); }
    100% { transform: translateY(20px) scale(1.05); }
}

.banner-inner {
    position: relative;
    z-index: 2;
}

.page-banner h1 {
    color: #fff;
    font-size: clamp(1.9rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 14px;
}

.page-banner p {
    color: rgba(255, 255, 255, 0.65);
    font-size: 1rem;
    max-width: 620px;
    margin: 0 auto 22px;
    line-height: 1.8;
}

.banner-breadcrumb {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.5);
}

.banner-breadcrumb a {
    color: rgba(255, 255, 255, 0.65);
}

.banner-breadcrumb a:hover {
    color: var(--color-accent);
}

.banner-breadcrumb i {
    margin: 0 8px;
    font-size: 0.7rem;
}

/* ===== 分类子导航 Tabs ===== */
.category-tabs-section {
    background: var(--color-bg-white);
    padding: 28px 0;
    border-bottom: 1px solid var(--color-border);
}

.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.tab-btn {
    padding: 8px 22px;
    border-radius: 20px;
    font-size: 0.88rem;
    font-weight: 500;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    background: #fff;
    transition: all var(--transition);
    white-space: nowrap;
}

.tab-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.tab-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* ===== 行业方案列表（行式跳转卡） ===== */
.solution-list-section {
    background: var(--color-bg-light);
    padding: 72px 0 60px;
}

.section-head {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 36px;
}

.section-head-bar {
    width: 4px;
    height: 34px;
    background: var(--color-primary);
    border-radius: 2px;
    flex-shrink: 0;
    margin-top: 6px;
}

.section-head h2 {
    font-size: clamp(1.5rem, 2.6vw, 2rem);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.01em;
    margin: 0;
    line-height: 1.3;
}

.section-head .en-note {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
    margin-top: 4px;
}

.section-head p {
    margin-top: 8px;
    color: var(--color-text-secondary);
    font-size: 0.92rem;
    max-width: 560px;
}

.solution-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.solution-row-card {
    display: flex;
    background: #fff;
    border-radius: 12px;
    box-shadow: var(--shadow-card);
    overflow: hidden;
    min-height: 120px;
    position: relative;
    border-left: 4px solid var(--color-secondary);
    transition: border-left-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.solution-row-card:hover {
    border-left-color: var(--color-primary);
    border-left-width: 8px;
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.solution-thumb {
    width: 160px;
    min-height: 120px;
    flex-shrink: 0;
    background: #F0F2F5;
    overflow: hidden;
}

.solution-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.solution-row-card:hover .solution-thumb img {
    transform: scale(1.04);
}

.solution-info {
    flex: 1;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.solution-info .row-tag {
    font-size: 0.75rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 4px;
    letter-spacing: 0.04em;
}

.solution-info h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin: 0 0 6px;
    color: var(--color-text);
    line-height: 1.4;
}

.solution-info p {
    font-size: 0.88rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin: 0 0 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.solution-spec {
    font-size: 0.8rem;
    color: var(--color-secondary);
    font-weight: 500;
    font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
    letter-spacing: 0.02em;
}

.solution-side {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    padding: 16px 20px;
    gap: 10px;
    flex-shrink: 0;
}

.price-tag {
    background: var(--color-accent);
    color: #111;
    font-size: 0.9rem;
    font-weight: 700;
    padding: 2px 12px;
    border-radius: 4px;
    letter-spacing: 0.02em;
}

.solution-arrow {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--color-text-secondary);
    transition: all var(--transition);
}

.solution-row-card:hover .solution-arrow {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* ===== 数据指标带 ===== */
.stats-band {
    background: var(--color-bg-dark);
    padding: 48px 0;
    position: relative;
    overflow: hidden;
}

.stats-band::before {
    content: "";
    position: absolute;
    left: -60px;
    bottom: -80px;
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, rgba(108, 61, 244, 0.25), transparent 70%);
    border-radius: 50%;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    z-index: 2;
}

.stat-item {
    text-align: center;
    padding: 12px 16px;
    border-left: 1px solid rgba(255, 255, 255, 0.08);
}

.stat-item:first-child {
    border-left: none;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
    line-height: 1.2;
}

.stat-number .unit {
    font-size: 1rem;
    color: var(--color-accent);
    margin-left: 2px;
}

.stat-label {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 4px;
}

/* ===== 选购指南 + 下载中心 ===== */
.guide-download-section {
    background: var(--color-bg-white);
    padding: 72px 0 60px;
}

.step-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.step-item {
    display: flex;
    gap: 18px;
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border);
}

.step-item:last-child {
    border-bottom: none;
}

.step-num {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--color-primary);
    font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
    line-height: 1.2;
    min-width: 44px;
}

.step-body h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 4px;
    color: var(--color-text);
}

.step-body p {
    font-size: 0.88rem;
    color: var(--color-text-secondary);
    margin: 0;
    line-height: 1.6;
}

.download-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 8px;
}

.download-item {
    display: flex;
    align-items: center;
    background: var(--color-bg-light);
    border-radius: 8px;
    padding: 12px 14px;
    gap: 14px;
    border: 1px solid var(--color-border);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.download-item:hover {
    border-color: var(--color-secondary);
    box-shadow: var(--shadow-card);
}

.download-icon {
    width: 40px;
    height: 40px;
    background: var(--color-secondary);
    color: #fff;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.download-info {
    flex: 1;
    min-width: 0;
}

.download-info .file-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.download-info .file-meta {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.btn-outline-primary {
    background: transparent;
    border: 2px solid var(--color-secondary);
    color: var(--color-secondary);
    border-radius: 8px;
    padding: 0.45rem 1.1rem;
    font-size: 0.82rem;
    font-weight: 600;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-outline-primary:hover {
    background: var(--color-secondary);
    color: #fff;
}

.btn-outline-primary:active {
    transform: translateY(1px);
}

/* ===== FAQ ===== */
.faq-section {
    background: var(--color-bg-light);
    padding: 72px 0 64px;
}

.accordion-item {
    border: 1px solid var(--color-border);
    border-radius: 8px !important;
    margin-bottom: 12px;
    box-shadow: none;
    overflow: hidden;
}

.accordion-button {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    padding: 18px 20px;
    background: #fff;
    box-shadow: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.accordion-button:not(.collapsed) {
    color: var(--color-primary);
    background: #fff;
    box-shadow: none;
}

.accordion-button::after {
    content: "\F4FE";
    font-family: "bootstrap-icons";
    background: none;
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    transform: rotate(0deg);
    transition: transform var(--transition), color var(--transition);
}

.accordion-button:not(.collapsed)::after {
    transform: rotate(45deg);
    color: var(--color-primary);
}

.accordion-button:focus {
    box-shadow: none;
    border-color: var(--color-primary);
}

.accordion-body {
    padding: 6px 20px 20px;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.75;
}

.faq-more-link {
    text-align: center;
    margin-top: 24px;
}

.faq-more-link a {
    color: var(--color-primary);
    font-size: 0.9rem;
}

.faq-more-link a:hover {
    color: var(--color-primary-600);
}

/* ===== CTA ===== */
.cta-band {
    background: linear-gradient(rgba(14, 27, 44, 0.94), rgba(14, 27, 44, 0.94)), url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
    padding: 60px 0;
}

.cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
}

.cta-text h3 {
    color: #fff;
    font-size: clamp(1.2rem, 2vw, 1.7rem);
    font-weight: 700;
    margin: 0 0 8px;
}

.cta-text p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    margin: 0;
}

.btn-accent {
    background: var(--color-accent);
    color: #111;
    border-radius: 8px;
    padding: 0.7rem 1.8rem;
    font-size: 0.95rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-accent:hover {
    background: #ffb300;
    color: #111;
    box-shadow: 0 4px 20px rgba(255, 197, 61, 0.3);
    transform: translateY(-1px);
}

.btn-accent:active {
    transform: translateY(1px);
}

/* ===== 页脚 ===== */
.site-footer {
    background: var(--color-bg-deep);
    padding: 64px 0 0;
    color: rgba(255, 255, 255, 0.6);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-brand .brand-icon {
    width: 38px;
    height: 38px;
    font-size: 0.75rem;
    box-shadow: none;
}

.footer-brand .brand-text {
    font-size: 1.2rem;
    font-weight: 700;
}

.footer-desc {
    font-size: 0.85rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.45);
    margin-bottom: 18px;
    max-width: 320px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.footer-social a {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    transition: all var(--transition);
}

.footer-social a:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.site-footer h5 {
    font-size: 0.95rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--color-primary);
}

.footer-contact p {
    font-size: 0.85rem;
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.5);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-contact i {
    color: var(--color-primary);
}

.footer-subscribe input {
    flex: 1;
    min-width: 160px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.06);
    padding: 0 14px;
    color: #fff;
    font-size: 0.85rem;
    outline: none;
}

.footer-subscribe input::placeholder {
    color: rgba(255, 255, 255, 0.35);
}

.footer-subscribe input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(230, 56, 124, 0.15);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: 48px;
    padding: 20px 0;
}

.footer-bottom .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-bottom p {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.35);
    margin: 0;
}

.footer-bottom .legal-links a {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.35);
    margin-left: 20px;
}

.footer-bottom .legal-links a:hover {
    color: var(--color-primary);
}

/* ===== 移动端搜索展开 ===== */
.mobile-search-expand {
    display: none;
    padding: 12px 20px;
    background: var(--color-bg-dark);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.mobile-search-expand .search-form {
    max-width: 100%;
}

/* ===== 移动端抽屉 ===== */
.mobile-drawer-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1040;
    opacity: 0;
    transition: opacity var(--transition);
}

.mobile-drawer-backdrop.show {
    opacity: 1;
}

.mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 300px;
    max-width: 85vw;
    background: var(--color-bg-dark);
    z-index: 1050;
    transform: translateX(-100%);
    transition: transform var(--transition);
    padding: 24px 0;
    overflow-y: auto;
}

.mobile-drawer.open {
    transform: translateX(0);
}

.mobile-drawer .drawer-brand {
    padding: 0 24px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.drawer-nav {
    list-style: none;
    padding: 12px 0;
    margin: 0;
}

.drawer-nav .nav-link {
    display: block;
    padding: 14px 24px;
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    border-left: 3px solid transparent;
}

.drawer-nav .nav-link.active {
    color: #fff;
    border-left-color: var(--color-primary);
    background: rgba(230, 56, 124, 0.06);
}

.drawer-nav .nav-link::after {
    display: none;
}

.drawer-cta {
    padding: 20px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.drawer-cta .btn-main {
    width: 100%;
    justify-content: center;
}

/* ===== 响应式 ===== */
@media (max-width: 1199.98px) {
    .search-wrap {
        max-width: 360px;
    }
    .nav-link {
        padding: 12px 20px;
    }
}

@media (max-width: 991.98px) {
    .topbar {
        display: none;
    }
    .header-main {
        padding: 12px 0;
    }
    .header-main .container {
        gap: 12px;
    }
    .brand-text {
        font-size: 1.2rem;
    }
    .brand-sub {
        font-size: 0.6rem;
    }
    .search-wrap {
        display: none;
        position: absolute;
        left: 0;
        right: 0;
        top: 60px;
        max-width: 100%;
        background: var(--color-bg-dark);
        padding: 12px 20px;
    }
    .search-wrap.mobile-open {
        display: block;
    }
    .mobile-icons {
        display: flex;
    }
    .header-actions .btn-main {
        display: none;
    }
    .main-nav {
        display: none;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stat-item:nth-child(3) {
        border-left: none;
    }
    .solution-thumb {
        width: 130px;
    }
}

@media (max-width: 767.98px) {
    .page-banner {
        padding: 56px 0 48px;
    }
    .solution-row-card {
        flex-direction: row;
        flex-wrap: wrap;
    }
    .solution-thumb {
        width: 100%;
        height: 120px;
    }
    .solution-info {
        padding: 14px 16px;
        flex: 0 0 100%;
        max-width: 100%;
    }
    .solution-side {
        flex-direction: row;
        justify-content: space-between;
        padding: 0 16px 14px;
        flex: 0 0 100%;
    }
    .category-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 8px;
        -webkit-overflow-scrolling: touch;
    }
    .tab-btn {
        flex-shrink: 0;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    .stat-item {
        border-left: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .cta-inner {
        flex-direction: column;
        text-align: center;
    }
    .footer-bottom .container {
        flex-direction: column;
        text-align: center;
    }
    .footer-bottom .legal-links a {
        margin: 0 10px;
    }
}

@media (max-width: 575.98px) {
    .brand-logo {
        gap: 8px;
    }
    .brand-icon {
        width: 36px;
        height: 36px;
    }
    .brand-text {
        font-size: 1.05rem;
    }
    .brand-sub {
        display: none;
    }
    .btn-main {
        width: 100%;
        justify-content: center;
    }
    .solution-download .btn-outline-primary {
        margin-top: 10px;
        width: 100%;
    }
}