/* roulang page: index */
:root {
            --color-primary: #2E6E8E;
            --color-primary-dark: #245A76;
            --color-primary-light: #3E84A8;
            --color-accent: #D98E5F;
            --color-accent-dark: #C87E52;
            --color-bg: #FAF7F2;
            --color-bg-alt: #F7F5F0;
            --color-card: #FFFFFF;
            --color-text: #1F2937;
            --color-text-secondary: #5B6472;
            --color-border: #E5E1DA;
            --color-border-dark: #D9D3CA;
            --color-nav-bg: #F4F6F8;
            --color-nav-text: #2C3E50;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 18px;
            --shadow-sm: 0 1px 4px rgba(31, 41, 55, 0.06);
            --shadow-md: 0 2px 8px rgba(31, 41, 55, 0.06);
            --shadow-lg: 0 8px 20px rgba(31, 41, 55, 0.12);
            --shadow-xl: 0 12px 32px rgba(31, 41, 55, 0.14);
            --transition: 0.2s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --spacing-section: 56px;
            --spacing-section-mobile: 36px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .container-fluid {
            width: 100%;
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        .section-alt {
            background-color: var(--color-bg-alt);
        }

        .section-white {
            background-color: var(--color-card);
        }

        .section-dark-soft {
            background-color: #2C3E50;
            color: #ffffff;
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-nav-text);
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition), color var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .nav-link:hover {
            background-color: #e8edf2;
            color: var(--color-primary);
        }

        .nav-link.active {
            color: var(--color-primary);
            background-color: #e8edf2;
            font-weight: 600;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: background-color var(--transition), box-shadow var(--transition), color var(--transition), transform var(--transition);
            letter-spacing: 0.02em;
            text-align: center;
            line-height: 1.5;
        }

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

        .btn-primary {
            background-color: var(--color-primary);
            color: #ffffff;
        }
        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            box-shadow: var(--shadow-md);
            color: #ffffff;
        }

        .btn-accent {
            background-color: var(--color-accent);
            color: #ffffff;
        }
        .btn-accent:hover {
            background-color: var(--color-accent-dark);
            box-shadow: var(--shadow-md);
            color: #ffffff;
        }

        .btn-outline {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }
        .btn-outline:hover {
            background-color: rgba(46, 110, 142, 0.08);
            color: var(--color-primary-dark);
        }

        .btn-outline-light {
            background-color: transparent;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.7);
        }
        .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffffff;
        }

        .btn-ghost {
            background-color: #f0f0f0;
            color: var(--color-text);
        }
        .btn-ghost:hover {
            background-color: #e5e5e5;
            color: var(--color-text);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .badge-primary {
            background-color: rgba(46, 110, 142, 0.12);
            color: var(--color-primary);
        }
        .badge-accent {
            background-color: rgba(217, 142, 95, 0.15);
            color: var(--color-accent-dark);
        }
        .badge-warm {
            background-color: #fdf0e6;
            color: #B76A3E;
        }
        .badge-light {
            background-color: rgba(255, 255, 255, 0.85);
            color: #1F2937;
        }
        .badge-outline {
            background-color: transparent;
            border: 1px solid var(--color-border-dark);
            color: var(--color-text-secondary);
        }

        .card {
            background-color: var(--color-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-md);
            padding: 24px;
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border-dark);
        }

        .card-media {
            background-color: var(--color-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
        }
        .card-media:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border-dark);
        }

        .grid-gap {
            gap: 24px;
        }

        .img-cover {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .bg-hero-overlay {
            background: linear-gradient(to bottom, rgba(15, 23, 32, 0.55), rgba(15, 23, 32, 0.65));
        }

        .bg-image-hero {
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .text-balance {
            text-wrap: balance;
            overflow-wrap: break-word;
        }

        .prose-heavy p {
            margin-bottom: 1.25em;
        }
        .prose-heavy p:last-child {
            margin-bottom: 0;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }

        .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin-bottom: 28px;
            max-width: 780px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 500;
            background-color: #f0ede7;
            color: var(--color-text-secondary);
            transition: background-color var(--transition), color var(--transition);
        }
        .tag:hover {
            background-color: var(--color-primary);
            color: #ffffff;
        }

        .divider {
            height: 1px;
            background-color: var(--color-border);
            width: 100%;
        }

        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            letter-spacing: -0.01em;
        }
        .stat-label {
            font-size: 14px;
            color: var(--color-text-secondary);
            font-weight: 500;
            margin-top: 4px;
        }

        .step-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background-color: var(--color-primary);
            color: #ffffff;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 18px 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            text-align: left;
            background: none;
            border: none;
            width: 100%;
            padding: 0;
            line-height: 1.6;
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-answer {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin-top: 10px;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        .faq-icon {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            flex-shrink: 0;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .form-input {
            width: 100%;
            padding: 10px 16px;
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-md);
            font-size: 14px;
            color: var(--color-text);
            background-color: #ffffff;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .form-input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(46, 110, 142, 0.12);
            outline: none;
        }
        .form-input::placeholder {
            color: #9a958c;
        }

        .footer-link {
            font-size: 13px;
            color: #6b7280;
            transition: color var(--transition);
        }
        .footer-link:hover {
            color: var(--color-primary);
        }

        .mobile-menu {
            display: none;
        }

        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            color: var(--color-nav-text);
        }
        .hamburger-btn:hover {
            background-color: #e8edf2;
        }

        .rating-stars {
            color: #D98E5F;
            font-size: 14px;
            letter-spacing: 2px;
        }

        .product-price {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text);
            font-variant-numeric: tabular-nums;
        }

        .product-compare {
            font-size: 13px;
            color: #9a958c;
            text-decoration: line-through;
            font-variant-numeric: tabular-nums;
        }

        .image-hover-zoom {
            overflow: hidden;
        }
        .image-hover-zoom img {
            transition: transform 0.45s ease;
        }
        .image-hover-zoom:hover img {
            transform: scale(1.05);
        }

        .badge-overlay {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 5;
        }

        .relative-wrap {
            position: relative;
        }

        .object-cover-img {
            object-fit: cover;
        }

        .aspect-4-5 {
            aspect-ratio: 4 / 5;
        }
        .aspect-3-2 {
            aspect-ratio: 3 / 2;
        }
        .aspect-16-9 {
            aspect-ratio: 16 / 9;
        }

        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .line-clamp-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .hover-lift {
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .hover-lift:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .icon-circle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: rgba(46, 110, 142, 0.1);
            color: var(--color-primary);
            flex-shrink: 0;
        }

        @media (max-width: 1024px) {
            .section {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .section-title {
                font-size: 24px;
            }
            .section-desc {
                font-size: 15px;
            }
            .grid-gap {
                gap: 18px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
            .section-title {
                font-size: 22px;
            }
            .section-desc {
                font-size: 14px;
                line-height: 1.75;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .container-fluid {
                padding-left: 16px;
                padding-right: 16px;
            }
            .desktop-nav {
                display: none !important;
            }
            .hamburger-btn {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .mobile-menu {
                display: block;
                background-color: #ffffff;
                border-top: 1px solid var(--color-border);
                border-bottom: 1px solid var(--color-border);
                padding: 12px 0;
            }
            .mobile-menu a {
                display: block;
                padding: 10px 16px;
                font-size: 14px;
                color: var(--color-text);
                border-radius: var(--radius-sm);
                transition: background-color var(--transition);
            }
            .mobile-menu a:hover {
                background-color: #f5f5f5;
                color: var(--color-primary);
            }
            .stat-number {
                font-size: 28px;
            }
            .step-number {
                width: 38px;
                height: 38px;
                font-size: 18px;
                border-radius: 10px;
            }
            .btn {
                padding: 9px 16px;
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .section-title {
                font-size: 20px;
            }
            .stat-number {
                font-size: 24px;
            }
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
            .card {
                padding: 16px;
            }
            .grid-gap {
                gap: 12px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #2E6E8E;
            --color-primary-dark: #245A76;
            --color-primary-light: #3E84A8;
            --color-accent: #D98E5F;
            --color-accent-dark: #C87E52;
            --color-bg: #FAF7F2;
            --color-bg-alt: #F7F5F0;
            --color-card: #FFFFFF;
            --color-text: #1F2937;
            --color-text-secondary: #5B6472;
            --color-border: #E5E1DA;
            --color-border-dark: #D9D3CA;
            --color-nav-bg: #F4F6F8;
            --color-nav-text: #2C3E50;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 18px;
            --shadow-sm: 0 1px 4px rgba(31, 41, 55, 0.06);
            --shadow-md: 0 2px 8px rgba(31, 41, 55, 0.06);
            --shadow-lg: 0 8px 20px rgba(31, 41, 55, 0.12);
            --shadow-xl: 0 12px 32px rgba(31, 41, 55, 0.14);
            --transition: 0.2s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --spacing-section: 56px;
            --spacing-section-mobile: 36px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .container-fluid {
            width: 100%;
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        .section-alt {
            background-color: var(--color-bg-alt);
        }

        .section-white {
            background-color: var(--color-card);
        }

        .section-dark-soft {
            background-color: #2C3E50;
            color: #ffffff;
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-nav-text);
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition), color var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .nav-link:hover {
            background-color: #e8edf2;
            color: var(--color-primary);
        }

        .nav-link.active {
            color: var(--color-primary);
            background-color: #e8edf2;
            font-weight: 600;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: background-color var(--transition), box-shadow var(--transition), color var(--transition), transform var(--transition);
            letter-spacing: 0.02em;
            text-align: center;
            line-height: 1.5;
        }

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

        .btn-primary {
            background-color: var(--color-primary);
            color: #ffffff;
        }

        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            box-shadow: var(--shadow-md);
            color: #ffffff;
        }

        .btn-accent {
            background-color: var(--color-accent);
            color: #ffffff;
        }

        .btn-accent:hover {
            background-color: var(--color-accent-dark);
            box-shadow: var(--shadow-md);
            color: #ffffff;
        }

        .btn-outline {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-outline:hover {
            background-color: rgba(46, 110, 142, 0.08);
            color: var(--color-primary-dark);
        }

        .btn-outline-light {
            background-color: transparent;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.7);
        }

        .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffffff;
        }

        .btn-ghost {
            background-color: #f0f0f0;
            color: var(--color-text);
        }

        .btn-ghost:hover {
            background-color: #e5e5e5;
            color: var(--color-text);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .badge-primary {
            background-color: rgba(46, 110, 142, 0.12);
            color: var(--color-primary);
        }

        .badge-accent {
            background-color: rgba(217, 142, 95, 0.14);
            color: var(--color-accent-dark);
        }

        .badge-neutral {
            background-color: #f0f0f0;
            color: var(--color-text-secondary);
        }

        .card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 4/3;
            background-color: #f0ece4;
        }

        .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .card:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            background-color: #f0f0f0;
            color: var(--color-text-secondary);
            transition: background-color var(--transition), color var(--transition);
        }

        .tag:hover {
            background-color: var(--color-primary);
            color: #ffffff;
        }

        .divider {
            width: 100%;
            height: 1px;
            background-color: var(--color-border);
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-secondary);
            padding: 14px 0;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
        }

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

        .breadcrumb .sep {
            color: var(--color-border-dark);
            user-select: none;
        }

        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 14px 16px;
            box-shadow: var(--shadow-sm);
        }

        .filter-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 14px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background-color: #ffffff;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-btn:hover,
        .filter-btn.active {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background-color: rgba(46, 110, 142, 0.06);
        }

        .price-tag {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-accent-dark);
            letter-spacing: 0.01em;
            font-variant-numeric: tabular-nums;
        }

        .price-tag .original {
            font-size: 13px;
            font-weight: 400;
            color: #9CA3AF;
            text-decoration: line-through;
            margin-left: 6px;
        }

        .rating {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: #D98E5F;
            font-size: 13px;
            font-weight: 600;
        }

        .rating svg {
            width: 14px;
            height: 14px;
            fill: currentColor;
        }

        .feature-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }

        .feature-card:hover {
            box-shadow: var(--shadow-md);
        }

        .icon-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 9999px;
            background-color: rgba(46, 110, 142, 0.12);
            color: var(--color-primary);
            font-weight: 700;
            flex-shrink: 0;
        }

        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            color: var(--color-nav-text);
        }

        .hamburger-btn:hover {
            background-color: #e8edf2;
        }

        .mobile-menu {
            display: none;
            background-color: var(--color-nav-bg);
            border-top: 1px solid var(--color-border);
            padding: 12px 20px 20px;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 10px 14px;
            border-bottom: 1px solid rgba(229, 225, 218, 0.5);
            font-size: 15px;
        }

        .footer-link {
            font-size: 13px;
            color: #5B6472;
            line-height: 1.6;
            transition: color var(--transition);
        }

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

        .desktop-nav {
            display: flex;
        }

        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }

            .hamburger-btn {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            .section {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .filter-bar {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
            }

            .filter-bar .filter-group {
                flex-wrap: wrap;
            }

            .grid-cols-2-sm {
                grid-template-columns: 1fr 1fr;
            }

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

        @media (max-width: 520px) {
            .grid-cols-2-sm {
                grid-template-columns: 1fr;
            }

            .card-img-wrap {
                aspect-ratio: 16/10;
            }

            h1 {
                font-size: 26px !important;
                line-height: 1.35 !important;
            }
        }

        .select-box {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' viewBox='0 0 24 24' stroke='%235B6472' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 36px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            background-color: #ffffff;
            padding: 8px 36px 8px 12px;
            font-size: 13px;
            color: var(--color-text-secondary);
            cursor: pointer;
            min-width: 140px;
        }

        .select-box:focus {
            outline: 2px solid var(--color-primary);
            outline-offset: 1px;
        }

/* roulang page: category2 */
:root {
            --color-primary: #2E6E8E;
            --color-primary-dark: #245A76;
            --color-primary-light: #3E84A8;
            --color-accent: #D98E5F;
            --color-accent-dark: #C87E52;
            --color-bg: #FAF7F2;
            --color-bg-alt: #F7F5F0;
            --color-card: #FFFFFF;
            --color-text: #1F2937;
            --color-text-secondary: #5B6472;
            --color-border: #E5E1DA;
            --color-border-dark: #D9D3CA;
            --color-nav-bg: #F4F6F8;
            --color-nav-text: #2C3E50;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 18px;
            --shadow-sm: 0 1px 4px rgba(31, 41, 55, 0.06);
            --shadow-md: 0 2px 8px rgba(31, 41, 55, 0.06);
            --shadow-lg: 0 8px 20px rgba(31, 41, 55, 0.12);
            --shadow-xl: 0 12px 32px rgba(31, 41, 55, 0.14);
            --transition: 0.2s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --spacing-section: 56px;
            --spacing-section-mobile: 36px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-primary);
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .container-fluid {
            width: 100%;
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }
        .section-alt {
            background-color: var(--color-bg-alt);
        }
        .section-white {
            background-color: var(--color-card);
        }
        .section-dark-soft {
            background-color: #2C3E50;
            color: #ffffff;
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-nav-text);
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition), color var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-link:hover {
            background-color: #e8edf2;
            color: var(--color-primary);
        }
        .nav-link.active {
            color: var(--color-primary);
            background-color: #e8edf2;
            font-weight: 600;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: background-color var(--transition), box-shadow var(--transition), color var(--transition), transform var(--transition);
            letter-spacing: 0.02em;
            text-align: center;
            line-height: 1.5;
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn-primary {
            background-color: var(--color-primary);
            color: #ffffff;
        }
        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            box-shadow: var(--shadow-md);
            color: #ffffff;
        }
        .btn-accent {
            background-color: var(--color-accent);
            color: #ffffff;
        }
        .btn-accent:hover {
            background-color: var(--color-accent-dark);
            box-shadow: var(--shadow-md);
            color: #ffffff;
        }
        .btn-outline {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }
        .btn-outline:hover {
            background-color: rgba(46, 110, 142, 0.08);
            color: var(--color-primary-dark);
        }
        .btn-outline-light {
            background-color: transparent;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.7);
        }
        .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffffff;
        }
        .btn-ghost {
            background-color: #f0f0f0;
            color: var(--color-text);
        }
        .btn-ghost:hover {
            background-color: #e5e5e5;
            color: var(--color-text);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .badge-primary {
            background-color: rgba(46, 110, 142, 0.12);
            color: var(--color-primary);
        }
        .badge-accent {
            background-color: rgba(217, 142, 95, 0.14);
            color: var(--color-accent-dark);
        }
        .badge-neutral {
            background-color: #f0f0f0;
            color: var(--color-text-secondary);
        }
        .badge-success {
            background-color: rgba(46, 142, 91, 0.12);
            color: #2e8e5b;
        }
        .card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border-dark);
        }
        .product-image-wrapper {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background-color: var(--color-bg-alt);
        }
        .product-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .card:hover .product-image-wrapper img {
            transform: scale(1.04);
        }
        .product-sale-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background-color: var(--color-accent);
            color: #ffffff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 9999px;
            letter-spacing: 0.02em;
        }
        .product-heart {
            position: absolute;
            top: 12px;
            right: 12px;
            background-color: rgba(255, 255, 255, 0.92);
            border-radius: 50%;
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--color-text-secondary);
            transition: color var(--transition);
        }
        .product-heart:hover {
            color: var(--color-accent);
        }
        .price-current {
            font-weight: 700;
            color: var(--color-text);
            font-variant-numeric: tabular-nums;
            font-size: 18px;
        }
        .price-original {
            color: var(--color-text-secondary);
            text-decoration: line-through;
            font-size: 13px;
            font-variant-numeric: tabular-nums;
        }
        .star-rating {
            display: inline-flex;
            align-items: center;
            gap: 3px;
            color: #e6a23c;
            font-size: 14px;
        }
        .divider {
            border-top: 1px solid var(--color-border);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 500;
            background-color: var(--color-bg-alt);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            transition: background-color var(--transition), color var(--transition);
        }
        .tag:hover {
            background-color: var(--color-border);
            color: var(--color-primary);
        }
        .footer-link {
            font-size: 13px;
            color: #5B6472;
            transition: color var(--transition);
        }
        .footer-link:hover {
            color: var(--color-primary);
        }
        .form-input {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background-color: #ffffff;
            font-size: 14px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .form-input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(46, 110, 142, 0.1);
            outline: none;
        }
        .form-select {
            padding: 10px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background-color: #ffffff;
            font-size: 14px;
            color: var(--color-text);
            cursor: pointer;
            transition: border-color var(--transition);
        }
        .form-select:focus {
            border-color: var(--color-primary);
            outline: none;
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            color: var(--color-nav-text);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition);
        }
        .hamburger-btn:hover {
            background-color: #e8edf2;
        }
        .mobile-menu {
            display: none;
            background-color: #ffffff;
            border-bottom: 1px solid var(--color-border);
            padding: 12px 20px;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-nav-link {
            display: block;
            padding: 10px 12px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            border-radius: var(--radius-sm);
            transition: background-color var(--transition), color var(--transition);
        }
        .mobile-nav-link:hover,
        .mobile-nav-link.active {
            background-color: var(--color-bg-alt);
            color: var(--color-primary);
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-bottom: 0;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb-sep {
            color: var(--color-border-dark);
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 500;
            background-color: #ffffff;
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-chip:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .filter-chip.active {
            background-color: var(--color-primary);
            border-color: var(--color-primary);
            color: #ffffff;
        }
        .advice-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
        }
        .advice-item:last-child {
            border-bottom: none;
        }
        .advice-icon {
            flex-shrink: 0;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background-color: rgba(46, 110, 142, 0.1);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
        }
        .guarantee-card {
            background-color: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 22px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .guarantee-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        @media (max-width: 1024px) {
            .desktop-nav {
                gap: 4px;
            }
            .nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .hamburger-btn {
                display: inline-flex;
            }
            .hidden-md {
                display: none !important;
            }
            .section {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
            .container,
            .container-fluid {
                padding-left: 16px;
                padding-right: 16px;
            }
            h1 {
                font-size: 26px !important;
                line-height: 1.3 !important;
            }
            h2 {
                font-size: 22px !important;
                line-height: 1.35 !important;
            }
            h3 {
                font-size: 18px !important;
            }
            .product-image-wrapper {
                aspect-ratio: 1 / 1;
            }
        }
        @media (max-width: 520px) {
            .container,
            .container-fluid {
                padding-left: 14px;
                padding-right: 14px;
            }
            .btn {
                padding: 9px 16px;
                font-size: 14px;
            }
            .price-current {
                font-size: 16px;
            }
            .grid-cols-1 {
                grid-template-columns: 1fr !important;
            }
        }

/* roulang page: category3 */
:root {
  --color-primary: #2E6E8E;
  --color-primary-dark: #245A76;
  --color-primary-light: #3E84A8;
  --color-accent: #D98E5F;
  --color-accent-dark: #C87E52;
  --color-bg: #FAF7F2;
  --color-bg-alt: #F7F5F0;
  --color-card: #FFFFFF;
  --color-text: #1F2937;
  --color-text-secondary: #5B6472;
  --color-border: #E5E1DA;
  --color-border-dark: #D9D3CA;
  --color-nav-bg: #F4F6F8;
  --color-nav-text: #2C3E50;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --shadow-sm: 0 1px 4px rgba(31, 41, 55, 0.06);
  --shadow-md: 0 2px 8px rgba(31, 41, 55, 0.06);
  --shadow-lg: 0 8px 20px rgba(31, 41, 55, 0.12);
  --shadow-xl: 0 12px 32px rgba(31, 41, 55, 0.14);
  --transition: 0.2s ease;
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --spacing-section: 56px;
  --spacing-section-mobile: 36px;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

button,
input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

.container-fluid {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

.section {
  padding-top: var(--spacing-section);
  padding-bottom: var(--spacing-section);
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-white {
  background-color: var(--color-card);
}

.section-dark-soft {
  background-color: #2C3E50;
  color: #ffffff;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-nav-text);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition), color var(--transition);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.nav-link:hover {
  background-color: #e8edf2;
  color: var(--color-primary);
}

.nav-link.active {
  color: var(--color-primary);
  background-color: #e8edf2;
  font-weight: 600;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background-color var(--transition), box-shadow var(--transition), color var(--transition), transform var(--transition);
  letter-spacing: 0.02em;
  text-align: center;
  line-height: 1.5;
}

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

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
  color: #ffffff;
}

.btn-accent {
  background-color: var(--color-accent);
  color: #ffffff;
}

.btn-accent:hover {
  background-color: var(--color-accent-dark);
  box-shadow: var(--shadow-md);
  color: #ffffff;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-outline:hover {
  background-color: rgba(46, 110, 142, 0.08);
  color: var(--color-primary-dark);
}

.btn-outline-light {
  background-color: transparent;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.7);
}

.btn-outline-light:hover {
  background-color: rgba(255, 255, 255, 0.15);
  color: #ffffff;
}

.btn-ghost {
  background-color: #f0f0f0;
  color: var(--color-text);
}

.btn-ghost:hover {
  background-color: #e5e5e5;
  color: var(--color-text);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.badge-primary {
  background-color: rgba(46, 110, 142, 0.12);
  color: var(--color-primary);
}

.badge-accent {
  background-color: rgba(217, 142, 95, 0.15);
  color: var(--color-accent-dark);
}

.badge-success {
  background-color: rgba(34, 139, 34, 0.12);
  color: #2d6a4f;
}

.badge-muted {
  background-color: #f0f0f0;
  color: var(--color-text-secondary);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-secondary);
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 28px;
}

.breadcrumb a {
  color: var(--color-text-secondary);
}

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

.breadcrumb span.separator {
  color: var(--color-border-dark);
  user-select: none;
}

.breadcrumb span.current {
  color: var(--color-text);
  font-weight: 500;
}

.h1-page {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
  letter-spacing: 0.01em;
  margin: 0 0 12px 0;
}

.page-intro {
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-text-secondary);
  max-width: 860px;
  margin-bottom: 28px;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.filter-bar label {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-right: 4px;
}

.filter-bar select {
  padding: 8px 12px;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  font-size: 14px;
  background-color: #fff;
  color: var(--color-text);
  min-width: 130px;
  cursor: pointer;
  transition: border-color var(--transition);
}

.filter-bar select:hover,
.filter-bar select:focus {
  border-color: var(--color-primary);
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.filter-chip {
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--color-border);
  background-color: #fff;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.filter-chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-chip.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 20px;
}

@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
}

@media (min-width: 1120px) {
  .card-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
  }
}

.product-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-dark);
  transform: translateY(-3px);
}

.product-card-img {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background-color: var(--color-bg-alt);
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.product-card:hover .product-card-img img {
  transform: scale(1.04);
}

.product-card-body {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.product-card-tags .badge {
  font-size: 11px;
  padding: 3px 10px;
}

.product-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: 6px;
}

.product-card-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 12px;
  flex: 1;
}

.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
  margin-top: 4px;
}

.product-price {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-accent-dark);
  letter-spacing: 0.01em;
  font-variant-numeric: tabular-nums;
}

.product-price span {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-left: 4px;
}

.product-btn {
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  background-color: var(--color-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: background-color var(--transition);
  white-space: nowrap;
}

.product-btn:hover {
  background-color: var(--color-primary-dark);
}

.support-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 768px) {
  .support-block {
    grid-template-columns: repeat(3, 1fr);
  }
}

.support-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.support-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.support-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background-color: rgba(46, 110, 142, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 18px;
}

.support-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.4;
}

.support-item p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.cta-panel {
  background-color: var(--color-primary);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  color: #ffffff;
}

@media (min-width: 768px) {
  .cta-panel {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 40px 36px;
  }
}

.cta-panel h2 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
  margin: 0;
  color: #ffffff;
}

.cta-panel p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
  margin: 6px 0 0;
  max-width: 600px;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.cta-actions .btn {
  white-space: nowrap;
}

.footer-link {
  font-size: 13px;
  color: #5B6472;
  transition: color var(--transition);
  line-height: 1.7;
}

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

.hamburger-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: #fff;
  cursor: pointer;
  color: var(--color-nav-text);
  transition: background-color var(--transition);
}

.hamburger-btn:hover {
  background-color: #e8edf2;
}

@media (min-width: 768px) {
  .hamburger-btn {
    display: none;
  }
}

.desktop-nav {
  display: none;
}

@media (min-width: 768px) {
  .desktop-nav {
    display: flex;
  }
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-bg);
  z-index: 40;
  padding: 20px;
  overflow-y: auto;
  border-top: 1px solid var(--color-border);
  box-shadow: 0 12px 24px rgba(31, 41, 55, 0.08);
}

.mobile-menu.open {
  display: block;
}

.mobile-nav-link {
  display: block;
  padding: 14px 16px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background-color: #e8edf2;
  color: var(--color-primary);
}

.divider {
  width: 100%;
  height: 1px;
  background-color: var(--color-border);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 500;
  background-color: rgba(46, 110, 142, 0.1);
  color: var(--color-primary);
  transition: background-color var(--transition), color var(--transition);
}

.tag:hover {
  background-color: rgba(46, 110, 142, 0.18);
  color: var(--color-primary-dark);
}

.icon-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #ffffff;
  flex-shrink: 0;
}

@media (max-width: 767px) {
  .section {
    padding-top: var(--spacing-section-mobile);
    padding-bottom: var(--spacing-section-mobile);
  }
  .h1-page {
    font-size: 24px;
  }
  .support-block {
    gap: 12px;
  }
  .support-item {
    padding: 18px 16px;
  }
}

/* roulang page: category4 */
:root {
            --color-primary: #2E6E8E;
            --color-primary-dark: #245A76;
            --color-primary-light: #3E84A8;
            --color-accent: #D98E5F;
            --color-accent-dark: #C87E52;
            --color-bg: #FAF7F2;
            --color-bg-alt: #F7F5F0;
            --color-card: #FFFFFF;
            --color-text: #1F2937;
            --color-text-secondary: #5B6472;
            --color-border: #E5E1DA;
            --color-border-dark: #D9D3CA;
            --color-nav-bg: #F4F6F8;
            --color-nav-text: #2C3E50;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 18px;
            --shadow-sm: 0 1px 4px rgba(31, 41, 55, 0.06);
            --shadow-md: 0 2px 8px rgba(31, 41, 55, 0.06);
            --shadow-lg: 0 8px 20px rgba(31, 41, 55, 0.12);
            --shadow-xl: 0 12px 32px rgba(31, 41, 55, 0.14);
            --transition: 0.2s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --spacing-section: 56px;
            --spacing-section-mobile: 36px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .container-fluid {
            width: 100%;
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        .section-alt {
            background-color: var(--color-bg-alt);
        }

        .section-white {
            background-color: var(--color-card);
        }

        .section-dark-soft {
            background-color: #2C3E50;
            color: #ffffff;
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-nav-text);
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition), color var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .nav-link:hover {
            background-color: #e8edf2;
            color: var(--color-primary);
        }

        .nav-link.active {
            color: var(--color-primary);
            background-color: #e8edf2;
            font-weight: 600;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: background-color var(--transition), box-shadow var(--transition), color var(--transition), transform var(--transition);
            letter-spacing: 0.02em;
            text-align: center;
            line-height: 1.5;
        }

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

        .btn-primary {
            background-color: var(--color-primary);
            color: #ffffff;
        }

        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            box-shadow: var(--shadow-md);
            color: #ffffff;
        }

        .btn-accent {
            background-color: var(--color-accent);
            color: #ffffff;
        }

        .btn-accent:hover {
            background-color: var(--color-accent-dark);
            box-shadow: var(--shadow-md);
            color: #ffffff;
        }

        .btn-outline {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-outline:hover {
            background-color: rgba(46, 110, 142, 0.08);
            color: var(--color-primary-dark);
        }

        .btn-outline-light {
            background-color: transparent;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.7);
        }

        .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffffff;
        }

        .btn-ghost {
            background-color: #f0f0f0;
            color: var(--color-text);
        }

        .btn-ghost:hover {
            background-color: #e5e5e5;
            color: var(--color-text);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .badge-primary {
            background-color: rgba(46, 110, 142, 0.12);
            color: var(--color-primary);
        }

        .badge-accent {
            background-color: rgba(217, 142, 95, 0.15);
            color: var(--color-accent-dark);
        }

        .badge-neutral {
            background-color: #f0eae1;
            color: #5B6472;
        }

        .badge-outline {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary-light);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            font-size: 12px;
            font-weight: 500;
            background-color: #fff;
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            transition: all var(--transition);
        }

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

        .card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border-dark);
        }

        .card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            background-color: #f0eae1;
        }

        .divider {
            width: 100%;
            height: 1px;
            background-color: var(--color-border);
            border: none;
        }

        .icon-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background-color: var(--color-primary);
            color: #ffffff;
            font-weight: 700;
            letter-spacing: 0.04em;
            flex-shrink: 0;
        }

        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: var(--color-nav-text);
            border-radius: var(--radius-sm);
            transition: background-color var(--transition);
        }

        .hamburger-btn:hover {
            background-color: #e8edf2;
        }

        .mobile-menu {
            display: none;
            background-color: var(--color-nav-bg);
            border-bottom: 1px solid var(--color-border);
            padding: 12px 20px 16px;
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 10px 12px;
            font-size: 15px;
            border-radius: var(--radius-sm);
            margin-bottom: 2px;
        }

        .footer-link {
            font-size: 13px;
            color: #5B6472;
            transition: color var(--transition);
            display: inline-block;
            line-height: 1.7;
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--transition);
        }

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

        .breadcrumb .separator {
            color: #B8B0A6;
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
        }

        .scene-card .card-img {
            transition: transform 0.35s ease;
        }

        .scene-card:hover .card-img {
            transform: scale(1.03);
        }

        .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            padding: 14px 16px;
            background-color: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
        }

        .filter-chip {
            padding: 6px 14px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 500;
            background-color: #f5f3ef;
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-chip:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background-color: rgba(46, 110, 142, 0.06);
        }

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

        @media (max-width: 1024px) {
            .desktop-nav {
                gap: 2px;
            }
            .nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }
            .stat-number {
                font-size: 26px;
            }
        }

        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .hamburger-btn {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .hidden-md-down {
                display: none !important;
            }
            .section {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
            .stat-number {
                font-size: 24px;
            }
            .filter-bar {
                padding: 10px 12px;
                gap: 6px;
                overflow-x: auto;
                flex-wrap: nowrap;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: thin;
            }
            .filter-chip {
                font-size: 12px;
                padding: 5px 12px;
                flex-shrink: 0;
            }
        }

        @media (max-width: 520px) {
            .container,
            .container-fluid {
                padding-left: 14px;
                padding-right: 14px;
            }
            .btn {
                padding: 8px 16px;
                font-size: 14px;
            }
            .card {
                border-radius: var(--radius-md);
            }
            .breadcrumb {
                font-size: 12px;
                gap: 4px;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #2E6E8E;
            --color-primary-dark: #245A76;
            --color-primary-light: #3E84A8;
            --color-accent: #D98E5F;
            --color-accent-dark: #C87E52;
            --color-bg: #FAF7F2;
            --color-bg-alt: #F7F5F0;
            --color-card: #FFFFFF;
            --color-text: #1F2937;
            --color-text-secondary: #5B6472;
            --color-border: #E5E1DA;
            --color-border-dark: #D9D3CA;
            --color-nav-bg: #F4F6F8;
            --color-nav-text: #2C3E50;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 18px;
            --shadow-sm: 0 1px 4px rgba(31, 41, 55, 0.06);
            --shadow-md: 0 2px 8px rgba(31, 41, 55, 0.06);
            --shadow-lg: 0 8px 20px rgba(31, 41, 55, 0.12);
            --shadow-xl: 0 12px 32px rgba(31, 41, 55, 0.14);
            --transition: 0.2s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --spacing-section: 56px;
            --spacing-section-mobile: 36px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-primary);
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .container-fluid {
            width: 100%;
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }
        .section-alt {
            background-color: var(--color-bg-alt);
        }
        .section-white {
            background-color: var(--color-card);
        }
        .section-dark-soft {
            background-color: #2C3E50;
            color: #ffffff;
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-nav-text);
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition), color var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-link:hover {
            background-color: #e8edf2;
            color: var(--color-primary);
        }
        .nav-link.active {
            color: var(--color-primary);
            background-color: #e8edf2;
            font-weight: 600;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: background-color var(--transition), box-shadow var(--transition), color var(--transition), transform var(--transition);
            letter-spacing: 0.02em;
            text-align: center;
            line-height: 1.5;
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn-primary {
            background-color: var(--color-primary);
            color: #ffffff;
        }
        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            box-shadow: var(--shadow-md);
            color: #ffffff;
        }
        .btn-accent {
            background-color: var(--color-accent);
            color: #ffffff;
        }
        .btn-accent:hover {
            background-color: var(--color-accent-dark);
            box-shadow: var(--shadow-md);
            color: #ffffff;
        }
        .btn-outline {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }
        .btn-outline:hover {
            background-color: rgba(46, 110, 142, 0.08);
            color: var(--color-primary-dark);
        }
        .btn-outline-light {
            background-color: transparent;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.7);
        }
        .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffffff;
        }
        .btn-ghost {
            background-color: #f0f0f0;
            color: var(--color-text);
        }
        .btn-ghost:hover {
            background-color: #e5e5e5;
            color: var(--color-text);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .badge-primary {
            background-color: rgba(46, 110, 142, 0.12);
            color: var(--color-primary);
        }
        .badge-accent {
            background-color: rgba(217, 142, 95, 0.15);
            color: var(--color-accent-dark);
        }
        .badge-soft {
            background-color: #F0ECE4;
            color: var(--color-text-secondary);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            font-size: 12px;
            font-weight: 600;
            background-color: #F0ECE4;
            color: var(--color-text-secondary);
            transition: background-color var(--transition), color var(--transition);
        }
        .tag:hover {
            background-color: #E5E1DA;
            color: var(--color-primary);
        }
        .card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .divider {
            height: 1px;
            background-color: var(--color-border);
            border: none;
            margin: 0;
        }
        .footer-link {
            font-size: 13px;
            color: #5B6472;
            transition: color var(--transition);
        }
        .footer-link:hover {
            color: var(--color-primary);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--color-text-secondary);
            padding: 16px 0;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .sep {
            color: var(--color-border-dark);
            font-size: 12px;
        }
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 12px 16px;
            box-shadow: var(--shadow-sm);
        }
        .filter-chip {
            font-size: 13px;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 9999px;
            background-color: #F7F5F0;
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            cursor: pointer;
            transition: background-color var(--transition), color var(--transition), border-color var(--transition);
            white-space: nowrap;
        }
        .filter-chip:hover {
            background-color: #E8EDF2;
            color: var(--color-primary);
        }
        .filter-chip.active {
            background-color: var(--color-primary);
            color: #ffffff;
            border-color: var(--color-primary);
        }
        .filter-select {
            font-size: 13px;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background-color: #ffffff;
            color: var(--color-text);
            cursor: pointer;
            transition: border-color var(--transition);
        }
        .filter-select:hover {
            border-color: var(--color-primary);
        }
        .product-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
        }
        .product-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .product-card .product-image {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background-color: #F0ECE4;
            position: relative;
        }
        .product-card .product-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .product-card:hover .product-image img {
            transform: scale(1.03);
        }
        .product-card .product-body {
            padding: 16px 18px 18px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }
        .price {
            font-weight: 700;
            font-size: 18px;
            color: var(--color-accent-dark);
            font-variant-numeric: tabular-nums;
            letter-spacing: 0.01em;
        }
        .rating {
            font-size: 13px;
            color: #B88A2E;
            font-weight: 500;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: 0.01em;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .dark-soft-title {
            color: #ffffff;
        }
        .dark-soft-subtitle {
            color: rgba(255, 255, 255, 0.75);
        }
        .icon-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background-color: var(--color-primary);
            color: #ffffff;
            flex-shrink: 0;
        }
        .mobile-menu {
            display: none;
            background-color: var(--color-nav-bg);
            border-bottom: 1px solid var(--color-border);
            padding: 16px 20px;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 10px 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-nav-text);
            border-bottom: 1px solid var(--color-border);
            transition: color var(--transition);
        }
        .mobile-menu a:last-child {
            border-bottom: none;
        }
        .mobile-menu a:hover {
            color: var(--color-primary);
        }
        .hamburger-btn {
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: var(--color-nav-text);
            display: none;
            align-items: center;
            justify-content: center;
        }
        .hamburger-btn:hover {
            color: var(--color-primary);
        }
        .hero-catalog {
            background: linear-gradient(135deg, #F4F6F8 0%, #E8EDF2 40%, #FAF7F2 100%);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-md);
            padding: 32px 28px;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .catalog-cover {
            background-color: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            text-align: center;
        }
        .catalog-cover .cover-icon {
            font-size: 48px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
        }
        .catalog-cover .cover-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
        }
        .catalog-cover .cover-subtitle {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-top: 6px;
        }
        .catalog-summary {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .catalog-summary h2 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
        }
        .catalog-summary ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .catalog-summary ul li {
            font-size: 14px;
            color: var(--color-text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.6;
        }
        .catalog-summary ul li::before {
            content: '·';
            color: var(--color-primary);
            font-weight: 700;
            font-size: 18px;
            line-height: 1.2;
        }
        .lead-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .lead-form input {
            padding: 10px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            background-color: #ffffff;
            color: var(--color-text);
            transition: border-color var(--transition);
        }
        .lead-form input:focus {
            border-color: var(--color-primary);
            outline: none;
        }
        .lead-form .btn {
            width: 100%;
        }
        .info-panel {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px;
        }
        .info-panel .info-icon {
            font-size: 28px;
            margin-bottom: 12px;
        }
        .info-panel h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .info-panel p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 1024px) {
            .desktop-nav {
                gap: 4px;
            }
            .nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }
        }
        @media (max-width: 768px) {
            .hamburger-btn {
                display: flex;
            }
            .desktop-nav {
                display: none;
            }
            .hidden-md {
                display: none;
            }
            .section {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
            .section-title {
                font-size: 22px;
            }
            .hero-catalog {
                padding: 20px 16px;
            }
            .catalog-cover {
                padding: 16px;
            }
            .catalog-cover .cover-icon {
                font-size: 36px;
            }
            .catalog-cover .cover-title {
                font-size: 16px;
            }
            .product-card .product-body {
                padding: 14px 14px 16px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
            .filter-bar {
                padding: 10px 12px;
                gap: 8px;
            }
            .filter-chip {
                font-size: 12px;
                padding: 5px 10px;
            }
            .price {
                font-size: 16px;
            }
            .section-title {
                font-size: 20px;
            }
            .catalog-summary h2 {
                font-size: 18px;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #2E6E8E;
            --color-primary-dark: #245A76;
            --color-primary-light: #3E84A8;
            --color-accent: #D98E5F;
            --color-accent-dark: #C87E52;
            --color-bg: #FAF7F2;
            --color-bg-alt: #F7F5F0;
            --color-card: #FFFFFF;
            --color-text: #1F2937;
            --color-text-secondary: #5B6472;
            --color-border: #E5E1DA;
            --color-border-dark: #D9D3CA;
            --color-nav-bg: #F4F6F8;
            --color-nav-text: #2C3E50;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 18px;
            --shadow-sm: 0 1px 4px rgba(31, 41, 55, 0.06);
            --shadow-md: 0 2px 8px rgba(31, 41, 55, 0.06);
            --shadow-lg: 0 8px 20px rgba(31, 41, 55, 0.12);
            --shadow-xl: 0 12px 32px rgba(31, 41, 55, 0.14);
            --transition: 0.2s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --spacing-section: 56px;
            --spacing-section-mobile: 36px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-primary);
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .container-fluid {
            width: 100%;
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }
        .section-alt {
            background-color: var(--color-bg-alt);
        }
        .section-white {
            background-color: var(--color-card);
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-nav-text);
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition), color var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
            display: inline-flex;
            align-items: center;
        }
        .nav-link:hover {
            background-color: #e8edf2;
            color: var(--color-primary);
        }
        .nav-link.active {
            color: var(--color-primary);
            background-color: #e8edf2;
            font-weight: 600;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: background-color var(--transition), box-shadow var(--transition), color var(--transition), transform var(--transition);
            letter-spacing: 0.02em;
            text-align: center;
            line-height: 1.5;
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn-primary {
            background-color: var(--color-primary);
            color: #ffffff;
        }
        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            box-shadow: var(--shadow-md);
            color: #ffffff;
        }
        .btn-accent {
            background-color: var(--color-accent);
            color: #ffffff;
        }
        .btn-accent:hover {
            background-color: var(--color-accent-dark);
            box-shadow: var(--shadow-md);
            color: #ffffff;
        }
        .btn-outline {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }
        .btn-outline:hover {
            background-color: rgba(46, 110, 142, 0.08);
            color: var(--color-primary-dark);
        }
        .btn-ghost {
            background-color: #f0f0f0;
            color: var(--color-text);
        }
        .btn-ghost:hover {
            background-color: #e5e5e5;
            color: var(--color-text);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .badge-primary {
            background-color: rgba(46, 110, 142, 0.12);
            color: var(--color-primary);
        }
        .badge-accent {
            background-color: rgba(217, 142, 95, 0.15);
            color: var(--color-accent-dark);
        }
        .badge-neutral {
            background-color: rgba(91, 100, 114, 0.12);
            color: var(--color-text-secondary);
        }
        .card {
            background-color: var(--color-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .card-img-wrapper {
            position: relative;
            overflow: hidden;
            aspect-ratio: 4 / 3;
            background-color: var(--color-bg-alt);
        }
        .card-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .card:hover .card-img-wrapper img {
            transform: scale(1.04);
        }
        .price-tag {
            font-weight: 700;
            color: var(--color-accent-dark);
            font-feature-settings: "tnum";
            font-variant-numeric: tabular-nums;
        }
        .divider {
            height: 1px;
            background-color: var(--color-border);
            border: none;
            margin: 0;
        }
        .tag {
            display: inline-block;
            padding: 3px 10px;
            background-color: rgba(46, 110, 142, 0.08);
            color: var(--color-primary);
            border-radius: var(--radius-sm);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.03em;
        }
        .icon-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background-color: var(--color-primary);
            color: #ffffff;
            font-weight: 600;
            flex-shrink: 0;
        }
        .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            font-feature-settings: "tnum";
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }
        .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.01em;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .card-body {
            padding: 18px 20px 20px;
        }
        .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.5;
            margin-bottom: 6px;
        }
        .card-text {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .rating-stars {
            color: #d4a373;
            font-size: 13px;
            letter-spacing: 2px;
        }
        .footer-link {
            font-size: 13px;
            color: #5B6472;
            transition: color var(--transition);
            display: inline-block;
        }
        .footer-link:hover {
            color: var(--color-primary);
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            color: var(--color-nav-text);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition);
        }
        .hamburger-btn:hover {
            background-color: #e8edf2;
        }
        .mobile-menu {
            display: none;
            background-color: #ffffff;
            border-top: 1px solid var(--color-border);
            padding: 12px 0;
        }
        .mobile-menu.open {
            display: block;
        }
        .breadcrumb {
            font-size: 13px;
            color: var(--color-text-secondary);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 4px;
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: var(--color-primary);
        }
        .breadcrumb a:hover {
            color: var(--color-primary-dark);
        }
        .breadcrumb-sep {
            color: var(--color-border-dark);
            margin: 0 4px;
        }
        @media (max-width: 1024px) {
            .desktop-nav {
                gap: 4px;
            }
            .nav-link {
                padding: 6px 10px;
                font-size: 13px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding-top: var(--spacing-section-mobile);
                padding-bottom: var(--spacing-section-mobile);
            }
            .desktop-nav {
                display: none !important;
            }
            .hamburger-btn {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .mobile-menu {
                display: block;
            }
            .mobile-menu:not(.open) {
                display: none;
            }
            .mobile-menu a {
                display: block;
                padding: 10px 20px;
                font-size: 15px;
                font-weight: 500;
                color: var(--color-text);
                border-bottom: 1px solid var(--color-border);
            }
            .mobile-menu a:last-child {
                border-bottom: none;
            }
            .mobile-menu a.active {
                color: var(--color-primary);
                background-color: #f0f5f8;
            }
            .section-title {
                font-size: 20px;
            }
            .stat-number {
                font-size: 26px;
            }
            .grid-cols-4 {
                grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .grid-cols-2 {
                grid-template-columns: 1fr !important;
            }
            .grid-cols-3 {
                grid-template-columns: 1fr !important;
            }
            .grid-cols-4 {
                grid-template-columns: 1fr !important;
            }
            .card-body {
                padding: 14px 16px 16px;
            }
            .badge {
                font-size: 11px;
                padding: 2px 8px;
            }
            .btn {
                padding: 8px 16px;
                font-size: 14px;
            }
        }