/* roulang page: index */
:root {
            --primary: #2B6CB0;
            --primary-hover: #25599A;
            --primary-active: #1F4E7A;
            --accent: #E87A1C;
            --accent-hover: #C96412;
            --bg: #F7F9FC;
            --card-bg: #FFFFFF;
            --text: #2D3748;
            --text-secondary: #64748B;
            --border: #E2E8F0;
            --success: #2F855A;
            --dark-footer: #1A2B3C;
            --footer-link: #CBD5E0;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-badge: 999px;
            --shadow-card: 0 2px 8px rgba(43, 108, 176, 0.06), 0 8px 24px rgba(43, 108, 176, 0.08);
            --shadow-card-hover: 0 4px 12px rgba(43, 108, 176, 0.12), 0 12px 32px rgba(43, 108, 176, 0.12);
            --shadow-btn: 0 2px 8px rgba(43, 108, 176, 0.18);
            --transition: 0.2s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 15px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: var(--primary-hover);
            text-decoration: none;
        }

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

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

        .container {
            max-width: 1140px;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            background: #fff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
            position: sticky;
            top: 0;
            z-index: 1030;
            padding: 0;
        }

        .navbar {
            padding: 0;
            min-height: 68px;
        }

        .navbar-brand {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .navbar-brand:hover {
            color: var(--primary-hover);
        }

        .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .navbar-nav .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 22px 18px !important;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }

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

        .navbar-nav .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            position: relative;
        }

        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 12px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: 20px;
        }

        .btn {
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            padding: 10px 24px;
            transition: all var(--transition);
            border: none;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }

        .btn-primary-custom:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-primary-custom:active {
            background: var(--primary-active);
            color: #fff;
            transform: translateY(0);
        }

        .btn-outline-custom {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline-custom:hover {
            background: rgba(43, 108, 176, 0.06);
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-accent-custom {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(232, 122, 28, 0.25);
        }

        .btn-accent-custom:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-sm-custom {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 6px;
        }

        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 6px 10px;
            background: #fff;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%232B6CB0' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: #fff;
                border-radius: 0 0 12px 12px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                padding: 16px 20px;
                margin-top: 8px;
            }

            .navbar-nav .nav-link {
                padding: 12px 8px !important;
            }

            .navbar-nav .nav-link.active::after {
                display: none;
            }

            .nav-cta-group {
                margin-left: 0;
                margin-top: 12px;
                flex-wrap: wrap;
            }
        }

        @media (max-width: 575.98px) {
            .navbar-brand {
                font-size: 18px;
            }

            .navbar-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
                border-radius: 6px;
            }

            .navbar {
                min-height: 58px;
            }

            .btn {
                padding: 8px 14px;
                font-size: 13px;
            }

            .nav-cta-group {
                gap: 6px;
            }
        }

        /* ===== Sections ===== */
        .section {
            padding: 64px 0;
            background: var(--bg);
        }

        .section-alt {
            background: #fff;
        }

        .section-dark {
            background: var(--dark-footer);
            color: #fff;
        }

        .section-accent-bg {
            background: #F0F4FA;
        }

        @media (max-width: 991.98px) {
            .section {
                padding: 48px 0;
            }
        }

        @media (max-width: 575.98px) {
            .section {
                padding: 40px 0;
            }
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: #1A2B3C;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 32px;
        }

        @media (max-width: 575.98px) {
            .section-title {
                font-size: 22px;
            }
        }

        /* ===== Hero Bento ===== */
        .hero-section {
            padding: 56px 0 64px;
            background: var(--bg);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            z-index: 1;
        }

        .hero-bento-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

        @media (min-width: 992px) {
            .hero-bento-grid {
                grid-template-columns: 7fr 5fr;
                grid-template-rows: auto auto;
            }
        }

        .hero-main-block {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 48px 40px;
            position: relative;
            overflow: hidden;
            min-height: 360px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .hero-main-block::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            width: 45%;
            background: url('/assets/images/c454a58a80264e14.webp') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }

        .hero-main-block h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            color: #1A2B3C;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            max-width: 80%;
            position: relative;
            z-index: 1;
        }

        .hero-main-block .hero-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 24px;
            max-width: 70%;
            position: relative;
            z-index: 1;
        }

        .hero-main-block .btn-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .hero-trust-strip {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
            position: relative;
            z-index: 1;
        }

        .hero-trust-item {
            font-size: 13px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .hero-trust-item i {
            color: var(--success);
            font-size: 14px;
        }

        .hero-small-block {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            transition: box-shadow var(--transition), transform var(--transition);
            min-height: 168px;
        }

        .hero-small-block:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .hero-small-block .small-block-label {
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: var(--accent);
            margin-bottom: 6px;
        }

        .hero-small-block h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }

        .hero-small-block p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }

        .hero-small-block .small-block-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 8px;
        }

        @media (min-width: 992px) {
            .hero-small-block {
                grid-row: span 1;
            }
        }

        @media (max-width: 991.98px) {
            .hero-main-block {
                padding: 32px 24px;
                min-height: auto;
            }

            .hero-main-block h1 {
                font-size: 26px;
                max-width: 100%;
            }

            .hero-main-block .hero-subtitle {
                max-width: 100%;
                font-size: 15px;
            }

            .hero-main-block::after {
                width: 100%;
                opacity: 0.06;
            }

            .hero-trust-strip {
                gap: 14px;
            }
        }

        @media (max-width: 575.98px) {
            .hero-section {
                padding: 40px 0 48px;
            }

            .hero-main-block {
                padding: 24px 20px;
                border-radius: 10px;
            }

            .hero-main-block h1 {
                font-size: 22px;
                margin-bottom: 12px;
            }

            .hero-main-block .hero-subtitle {
                font-size: 14px;
                margin-bottom: 16px;
            }

            .hero-small-block {
                padding: 18px 20px;
                min-height: auto;
            }

            .hero-trust-strip {
                flex-direction: column;
                gap: 8px;
                margin-top: 18px;
                padding-top: 14px;
            }
        }

        /* ===== Data Strip ===== */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .data-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .data-card .data-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .data-card .data-number {
            font-size: 32px;
            font-weight: 700;
            color: #1A2B3C;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .data-card .data-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        @media (max-width: 991.98px) {
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 575.98px) {
            .data-strip {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .data-card {
                padding: 20px 18px;
            }

            .data-card .data-number {
                font-size: 26px;
            }
        }

        /* ===== Product Grid ===== */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

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

        .product-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .product-card .product-img-wrap {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: #F0F4FA;
        }

        .product-card .product-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

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

        .product-card .badge-scene {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.4px;
        }

        .product-card .product-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .product-card .product-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .product-card .product-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
            flex: 1;
        }

        .product-card .product-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        @media (max-width: 1199.98px) {
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 575.98px) {
            .product-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== Equipment Strip ===== */
        .equipment-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .equipment-item {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 20px 16px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            min-width: 120px;
            flex: 1 0 120px;
            max-width: 150px;
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .equipment-item .eq-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(43, 108, 176, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
        }

        .equipment-item .eq-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            text-align: center;
        }

        @media (max-width: 575.98px) {
            .equipment-item {
                min-width: 80px;
                flex: 1 0 80px;
                max-width: 100px;
                padding: 14px 10px;
            }

            .equipment-item .eq-icon {
                width: 36px;
                height: 36px;
                font-size: 18px;
            }

            .equipment-item .eq-name {
                font-size: 12px;
            }
        }

        /* ===== Brand Intro ===== */
        .brand-intro-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .brand-intro-text {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text);
        }

        .brand-intro-text p {
            margin-bottom: 16px;
        }

        .brand-intro-text p:last-child {
            margin-bottom: 0;
        }

        .brand-intro-img {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            aspect-ratio: 4 / 3;
        }

        .brand-intro-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        @media (max-width: 991.98px) {
            .brand-intro-wrap {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .brand-intro-img {
                order: -1;
            }
        }

        /* ===== Process Steps ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .process-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 28px 22px;
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
            position: relative;
        }

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

        .process-card .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
        }

        .process-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }

        .process-card p {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }

        @media (max-width: 1199.98px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Case Cards ===== */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .case-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .case-card .case-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #F0F4FA;
        }

        .case-card .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

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

        .case-card .case-body {
            padding: 20px 22px;
        }

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

        .case-card .case-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 10px;
        }

        .case-card .case-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
        }

        @media (max-width: 991.98px) {
            .case-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 575.98px) {
            .case-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== News List ===== */
        .news-list-wrap {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        .news-item {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 18px 22px;
            display: flex;
            align-items: center;
            gap: 16px;
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .news-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateX(3px);
        }

        .news-item .news-date {
            font-size: 13px;
            color: var(--text-secondary);
            white-space: nowrap;
            font-weight: 500;
            min-width: 70px;
        }

        .news-item .news-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            flex: 1;
            line-height: 1.5;
        }

        .news-item .news-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            white-space: nowrap;
        }

        @media (max-width: 575.98px) {
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 16px 18px;
            }

            .news-item .news-date {
                min-width: auto;
            }
        }

        /* ===== Reviews ===== */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .review-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 24px 22px;
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .review-card .review-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .review-card .review-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(43, 108, 176, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
            font-weight: 600;
            flex-shrink: 0;
        }

        .review-card .review-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }

        .review-card .review-stars {
            color: var(--accent);
            font-size: 13px;
            letter-spacing: 1px;
        }

        .review-card .review-text {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        @media (max-width: 1199.98px) {
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .review-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ===== Partners ===== */
        .partner-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            justify-content: center;
        }

        .partner-logo-item {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 18px 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 140px;
            min-height: 64px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            letter-spacing: 0.5px;
            transition: box-shadow var(--transition), transform var(--transition), color var(--transition);
            cursor: default;
        }

        .partner-logo-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            color: var(--primary);
        }

        @media (max-width: 575.98px) {
            .partner-logo-item {
                min-width: 110px;
                min-height: 54px;
                padding: 14px 18px;
                font-size: 12px;
            }
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: 0 2px 4px rgba(43, 108, 176, 0.04);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            user-select: none;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }

        .faq-question:hover {
            background: rgba(43, 108, 176, 0.03);
        }

        .faq-question .faq-toggle-icon {
            flex-shrink: 0;
            color: var(--primary);
            font-size: 14px;
            transition: transform 0.2s ease;
        }

        .faq-item.open .faq-toggle-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        @media (max-width: 575.98px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }

            .faq-answer {
                padding: 0 16px 14px;
                font-size: 13px;
            }
        }

        /* ===== Service Guarantee ===== */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .guarantee-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 26px 22px;
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .guarantee-card .g-icon {
            font-size: 30px;
            color: var(--success);
            margin-bottom: 12px;
        }

        .guarantee-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text);
        }

        .guarantee-card p {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        @media (max-width: 991.98px) {
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .guarantee-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ===== CTA Form ===== */
        .cta-form-section {
            background: var(--bg);
        }

        .cta-form-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .cta-form-left h3 {
            font-size: 22px;
            font-weight: 700;
            color: #1A2B3C;
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .cta-form-left p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .cta-form-left .contact-info {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .cta-form-left .contact-info-item {
            font-size: 14px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .cta-form-left .contact-info-item i {
            color: var(--primary);
        }

        .cta-form-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 32px 30px;
        }

        .cta-form-card .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .cta-form-card .form-control {
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            font-size: 14px;
            color: var(--text);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .cta-form-card .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(43, 108, 176, 0.15);
            outline: none;
        }

        .cta-form-card .form-control::placeholder {
            color: #A0AEC0;
        }

        @media (max-width: 991.98px) {
            .cta-form-wrap {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .cta-form-card {
                padding: 24px 20px;
            }
        }

        /* ===== Season Special ===== */
        .season-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .season-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .season-card .season-img {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #F0F4FA;
        }

        .season-card .season-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

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

        .season-card .season-body {
            padding: 18px 22px 20px;
        }

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

        .season-card .season-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 10px;
        }

        .season-card .season-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
        }

        @media (max-width: 991.98px) {
            .season-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .season-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== Tips ===== */
        .tips-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .tips-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 22px 24px;
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .tips-card .tips-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .tips-card .tips-title i {
            color: var(--accent);
            font-size: 16px;
        }

        .tips-card .tips-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        @media (max-width: 767.98px) {
            .tips-list {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark-footer);
            color: #fff;
            padding: 48px 0 24px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .footer-brand .footer-logo .brand-icon-footer {
            width: 30px;
            height: 30px;
            background: var(--primary);
            border-radius: 6px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: #fff;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--footer-link);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

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

        .footer-col .footer-links li {
            margin-bottom: 8px;
        }

        .footer-col .footer-links a {
            font-size: 13px;
            color: var(--footer-link);
            transition: color var(--transition);
        }

        .footer-col .footer-links a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--footer-link);
        }

        .footer-bottom a {
            color: var(--footer-link);
            font-size: 13px;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        @media (max-width: 991.98px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 575.98px) {
            .site-footer {
                padding: 32px 0 16px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        /* ===== Back to top ===== */
        .back-to-top {
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(43, 108, 176, 0.35);
            transition: background var(--transition), transform var(--transition);
            z-index: 1020;
            opacity: 0;
            pointer-events: none;
            border: none;
        }

        .back-to-top.show {
            opacity: 1;
            pointer-events: auto;
        }

        .back-to-top:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            color: #fff;
        }

/* roulang page: category2 */
:root {
            --primary: #2B6CB0;
            --primary-hover: #25599A;
            --primary-active: #1F4E7A;
            --accent: #E87A1C;
            --accent-hover: #C96412;
            --bg: #F7F9FC;
            --card-bg: #FFFFFF;
            --text: #2D3748;
            --text-secondary: #64748B;
            --border: #E2E8F0;
            --success: #2F855A;
            --dark-footer: #1A2B3C;
            --footer-link: #CBD5E0;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-badge: 999px;
            --shadow-card: 0 2px 8px rgba(43, 108, 176, 0.06), 0 8px 24px rgba(43, 108, 176, 0.08);
            --shadow-card-hover: 0 4px 12px rgba(43, 108, 176, 0.12), 0 12px 32px rgba(43, 108, 176, 0.12);
            --shadow-btn: 0 2px 8px rgba(43, 108, 176, 0.18);
            --transition: 0.2s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 15px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-hover);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

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

        .container {
            max-width: 1140px;
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            padding: 64px 0;
        }

        .section-alt {
            background: #ffffff;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: #1A2B3C;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
            max-width: 720px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 1px;
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        /* Header / Navigation */
        .site-header {
            background: #fff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
            position: sticky;
            top: 0;
            z-index: 1030;
            padding: 0;
        }
        .navbar {
            padding: 0;
            min-height: 68px;
        }
        .navbar-brand {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .navbar-brand:hover {
            color: var(--primary-hover);
        }
        .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .navbar-nav .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 22px 18px !important;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            position: relative;
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 12px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: 20px;
        }
        .btn {
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            padding: 10px 24px;
            transition: all var(--transition);
            border: none;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary-custom:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-primary-custom:active {
            background: var(--primary-active);
            color: #fff;
            transform: translateY(0);
        }
        .btn-outline-custom {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline-custom:hover {
            background: rgba(43, 108, 176, 0.06);
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-accent-custom {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(232, 122, 28, 0.25);
        }
        .btn-accent-custom:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-sm-custom {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 6px;
        }
        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 6px 10px;
            background: #fff;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(43, 108, 176, 1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* Breadcrumb */
        .breadcrumb-wrapper {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .breadcrumb {
            margin: 0;
            padding: 0;
            background: transparent;
            font-size: 14px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
        }
        .breadcrumb-item {
            color: var(--text-secondary);
            display: flex;
            align-items: center;
        }
        .breadcrumb-item a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb-item a:hover {
            color: var(--primary);
        }
        .breadcrumb-item+.breadcrumb-item::before {
            content: "/";
            color: var(--border);
            padding: 0 8px;
            font-size: 13px;
        }
        .breadcrumb-item.active {
            color: var(--primary);
            font-weight: 600;
        }

        /* Hero / Page Header */
        .page-header {
            background: #fff;
            padding: 48px 0 32px;
            border-bottom: 1px solid var(--border);
        }
        .page-header .h1-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            color: #1A2B3C;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .page-header .lead {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 780px;
            margin-bottom: 0;
        }

        /* Category Entry Cards */
        .category-entry-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .category-entry-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: block;
            text-align: center;
            padding: 0;
        }
        .category-entry-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            color: var(--text);
        }
        .category-entry-card .entry-img {
            width: 100%;
            aspect-ratio: 4/3;
            overflow: hidden;
            background: #eef2f6;
        }
        .category-entry-card .entry-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .category-entry-card .entry-body {
            padding: 16px 16px 20px;
        }
        .category-entry-card .entry-title {
            font-size: 17px;
            font-weight: 700;
            color: #1A2B3C;
            margin-bottom: 6px;
        }
        .category-entry-card .entry-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* Product Cards Grid */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .product-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .product-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .product-card .product-img-wrap {
            position: relative;
            width: 100%;
            aspect-ratio: 4/3;
            overflow: hidden;
            background: #eef2f6;
        }
        .product-card .product-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .product-card .product-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.94);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.5px;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
        }
        .product-card .product-body {
            padding: 18px 18px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .product-card .product-title {
            font-size: 17px;
            font-weight: 700;
            color: #1A2B3C;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .product-card .product-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            flex: 1;
        }
        .product-card .product-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
        }
        .product-card .product-price {
            font-size: 16px;
            font-weight: 700;
            color: var(--accent);
        }
        .product-card .product-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .product-card .product-link:hover {
            color: var(--primary-hover);
        }

        /* Hot Ranking */
        .hot-ranking-list {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            margin-top: 32px;
        }
        .hot-ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }
        .hot-ranking-item:last-child {
            border-bottom: none;
        }
        .hot-ranking-item:hover {
            background: rgba(43, 108, 176, 0.03);
        }
        .hot-rank-number {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .hot-rank-number.rank-2 {
            background: #4a8bc2;
        }
        .hot-rank-number.rank-3 {
            background: #6ba0cf;
        }
        .hot-rank-number.rank-4,
        .hot-rank-number.rank-5 {
            background: #9bb8d6;
        }
        .hot-rank-content {
            flex: 1;
        }
        .hot-rank-title {
            font-size: 15px;
            font-weight: 600;
            color: #1A2B3C;
            margin-bottom: 2px;
        }
        .hot-rank-desc {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .hot-rank-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        /* Fabric Process */
        .fabric-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .fabric-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px 18px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .fabric-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .fabric-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(43, 108, 176, 0.08);
            color: var(--primary);
            font-size: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
        }
        .fabric-title {
            font-size: 15px;
            font-weight: 600;
            color: #1A2B3C;
            margin-bottom: 6px;
        }
        .fabric-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* Scene Recommendation */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .scene-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .scene-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .scene-img {
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #eef2f6;
        }
        .scene-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .scene-body {
            padding: 18px 18px 20px;
        }
        .scene-title {
            font-size: 16px;
            font-weight: 700;
            color: #1A2B3C;
            margin-bottom: 6px;
        }
        .scene-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* User Reviews */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .review-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .review-card:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .review-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
        }
        .review-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .review-avatar.avatar-2 {
            background: var(--accent);
        }
        .review-avatar.avatar-3 {
            background: var(--success);
        }
        .review-name {
            font-size: 14px;
            font-weight: 600;
            color: #1A2B3C;
        }
        .review-stars {
            font-size: 12px;
            color: #f6b93b;
            display: flex;
            gap: 2px;
        }
        .review-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* FAQ */
        .faq-wrapper {
            max-width: 780px;
            margin: 32px auto 0;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .faq-question {
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: #1A2B3C;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: #fff;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: rgba(43, 108, 176, 0.03);
        }
        .faq-question .faq-icon {
            font-size: 14px;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
        }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        /* Footer */
        .site-footer {
            background: var(--dark-footer);
            color: #fff;
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(203, 213, 224, 0.15);
        }
        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 12px;
        }
        .footer-brand .brand-icon-footer {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--footer-link);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: var(--footer-link);
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            padding-top: 20px;
            font-size: 13px;
            color: var(--footer-link);
            letter-spacing: 0.2px;
        }
        .footer-bottom a {
            color: var(--footer-link);
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .navbar-nav .nav-link {
                padding: 12px 18px !important;
            }
            .nav-cta-group {
                margin-left: 0;
                margin-top: 12px;
                padding: 0 18px 16px;
            }
            .category-entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .fabric-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
            .page-header .h1-title {
                font-size: 28px;
            }
            section {
                padding: 48px 0;
            }
        }
        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-entry-grid {
                grid-template-columns: 1fr;
            }
            .product-grid {
                grid-template-columns: 1fr;
            }
            .fabric-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scene-grid {
                grid-template-columns: 1fr;
            }
            .review-grid {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .page-header .h1-title {
                font-size: 24px;
            }
            section {
                padding: 40px 0;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
            .modal-backdrop {
                z-index: 1031;
            }
        }
        @media (max-width: 575.98px) {
            .section-title {
                font-size: 22px;
            }
            .btn-sm-custom {
                padding: 6px 12px;
                font-size: 12px;
            }
            .fabric-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        /* Additional page-specific styles */
        .section-divider {
            height: 1px;
            background: var(--border);
            margin: 0;
            border: none;
        }
        .breadcrumb-section {
            background: #fff;
            border-bottom: 1px solid var(--border);
        }
        .back-to-top {
            display: none;
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            z-index: 999;
            box-shadow: 0 4px 12px rgba(43, 108, 176, 0.3);
            transition: all var(--transition);
            border: none;
            font-size: 16px;
        }
        .back-to-top.show {
            display: flex;
        }
        .back-to-top:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
        }
        .text-link {
            color: var(--primary);
            font-weight: 500;
            font-size: 14px;
        }
        .text-link:hover {
            color: var(--primary-hover);
        }
        .badge-scene {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(43, 108, 176, 0.08);
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.3px;
            margin-bottom: 8px;
        }

/* roulang page: category1 */
:root {
            --primary: #2B6CB0;
            --primary-hover: #25599A;
            --primary-active: #1F4E7A;
            --accent: #E87A1C;
            --accent-hover: #C96412;
            --bg: #F7F9FC;
            --card-bg: #FFFFFF;
            --text: #2D3748;
            --text-secondary: #64748B;
            --border: #E2E8F0;
            --success: #2F855A;
            --dark-footer: #1A2B3C;
            --footer-link: #CBD5E0;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-badge: 999px;
            --shadow-card: 0 2px 8px rgba(43, 108, 176, 0.06), 0 8px 24px rgba(43, 108, 176, 0.08);
            --shadow-card-hover: 0 4px 12px rgba(43, 108, 176, 0.12), 0 12px 32px rgba(43, 108, 176, 0.12);
            --shadow-btn: 0 2px 8px rgba(43, 108, 176, 0.18);
            --transition: 0.2s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 15px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-hover);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1140px;
            padding-left: 16px;
            padding-right: 16px;
        }
        section {
            padding: 64px 0;
        }
        .bg-white-section {
            background: var(--card-bg);
        }
        .bg-gray-section {
            background: var(--bg);
        }
        /* ===== Header / Navigation ===== */
        .site-header {
            background: #fff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
            position: sticky;
            top: 0;
            z-index: 1030;
            padding: 0;
        }
        .navbar {
            padding: 0;
            min-height: 68px;
        }
        .navbar-brand {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .navbar-brand:hover {
            color: var(--primary-hover);
        }
        .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .navbar-nav .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 22px 18px !important;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            position: relative;
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 12px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: 20px;
        }
        .btn {
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            padding: 10px 24px;
            transition: all var(--transition);
            border: none;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary-custom:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-primary-custom:active {
            background: var(--primary-active);
            color: #fff;
            transform: translateY(0);
        }
        .btn-primary-custom:focus {
            background: var(--primary-hover);
            color: #fff;
        }
        .btn-outline-custom {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline-custom:hover {
            background: rgba(43, 108, 176, 0.06);
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-accent-custom {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(232, 122, 28, 0.25);
        }
        .btn-accent-custom:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-sm-custom {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 6px;
        }
        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 6px 10px;
            background: #fff;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(43,108,176,1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        /* ===== Breadcrumb ===== */
        .breadcrumb-section {
            background: var(--bg);
            padding: 28px 0 20px;
        }
        .breadcrumb {
            margin-bottom: 0;
            font-size: 14px;
        }
        .breadcrumb-item a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb-item a:hover {
            color: var(--primary-hover);
        }
        .breadcrumb-item.active {
            color: var(--text-secondary);
        }
        .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-secondary);
            content: ">";
        }
        .page-title-wrap h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.25;
            color: #1A2B3C;
            margin: 12px 0 8px;
        }
        .page-title-wrap .subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.75;
        }
        /* ===== Filter Section ===== */
        .filter-section {
            padding: 24px 0;
            background: var(--card-bg);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .filter-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .filter-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg);
            border: 1px solid var(--border);
            color: var(--text);
            padding: 8px 18px;
            border-radius: var(--radius-badge);
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition);
            text-decoration: none;
            cursor: pointer;
        }
        .filter-btn:hover,
        .filter-btn:focus {
            background: rgba(43, 108, 176, 0.08);
            border-color: var(--primary);
            color: var(--primary);
        }
        .filter-btn.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        /* ===== Product Cards ===== */
        .product-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 0;
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
        }
        .product-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .product-card .product-img-wrap {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: #EDF2F7;
        }
        .product-card .product-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }
        .product-card:hover .product-img-wrap img {
            transform: scale(1.04);
        }
        .product-card .product-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            z-index: 2;
        }
        .product-card .product-body {
            padding: 20px 20px 22px;
        }
        .product-card .product-name {
            font-size: 18px;
            font-weight: 600;
            color: #1A2B3C;
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .product-card .product-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 10px;
        }
        .product-card .product-tag {
            font-size: 12px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg);
            border: 1px solid var(--border);
            padding: 3px 10px;
            border-radius: var(--radius-badge);
        }
        .product-card .product-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            min-height: 48px;
        }
        .product-card .product-price {
            font-size: 18px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 14px;
        }
        .product-card .product-price span {
            font-size: 13px;
            font-weight: 400;
            color: var(--text-secondary);
        }
        .product-card .btn-detail {
            display: inline-block;
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            padding: 7px 18px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition);
            text-decoration: none;
        }
        .product-card .btn-detail:hover {
            background: rgba(43, 108, 176, 0.06);
            color: var(--primary);
            border-color: var(--primary);
        }
        /* ===== Ranking List ===== */
        .ranking-list {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }
        .ranking-item:last-child {
            border-bottom: none;
        }
        .ranking-item:hover {
            background: rgba(43, 108, 176, 0.03);
        }
        .ranking-num {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg);
            border-radius: 8px;
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
        }
        .ranking-num.top1 {
            background: var(--primary);
            color: #fff;
        }
        .ranking-num.top2 {
            background: var(--accent);
            color: #fff;
        }
        .ranking-info {
            flex: 1;
        }
        .ranking-info .ranking-name {
            font-size: 16px;
            font-weight: 600;
            color: #1A2B3C;
            margin-bottom: 2px;
        }
        .ranking-info .ranking-desc {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .ranking-trend {
            font-size: 13px;
            font-weight: 600;
            color: var(--success);
            white-space: nowrap;
        }
        /* ===== Tips List ===== */
        .tip-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 22px 24px;
            height: 100%;
            display: flex;
            flex-direction: column;
            gap: 10px;
            transition: box-shadow var(--transition);
        }
        .tip-card:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .tip-icon {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(43, 108, 176, 0.08);
            border-radius: 10px;
            color: var(--primary);
            font-size: 20px;
            flex-shrink: 0;
        }
        .tip-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: #1A2B3C;
            margin: 0;
        }
        .tip-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }
        /* ===== Review Cards ===== */
        .review-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 22px 24px;
            height: 100%;
            transition: box-shadow var(--transition);
        }
        .review-card:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .review-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }
        .review-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(43, 108, 176, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            flex-shrink: 0;
        }
        .review-meta {
            flex: 1;
        }
        .review-meta .review-name {
            font-size: 15px;
            font-weight: 600;
            color: #1A2B3C;
            margin-bottom: 2px;
        }
        .review-stars {
            color: var(--accent);
            font-size: 13px;
            letter-spacing: 1px;
        }
        .review-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            padding: 40px 36px;
        }
        .cta-section h2 {
            font-size: 24px;
            font-weight: 700;
            color: #1A2B3C;
            margin-bottom: 10px;
        }
        .cta-section p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .form-control {
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            padding: 10px 14px;
            font-size: 15px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.15);
            outline: none;
        }
        .form-label {
            font-size: 14px;
            font-weight: 500;
            color: #1A2B3C;
            margin-bottom: 6px;
        }
        /* ===== Section Title ===== */
        .section-title {
            margin-bottom: 32px;
        }
        .section-title h2 {
            font-size: 26px;
            font-weight: 700;
            color: #1A2B3C;
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .section-title p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 0;
            max-width: 700px;
        }
        .section-title .title-accent {
            color: var(--accent);
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark-footer);
            color: #fff;
            padding-top: 56px;
            margin-top: 0;
        }
        .footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            padding-bottom: 36px;
        }
        .footer-brand {
            flex: 1 1 280px;
            min-width: 240px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .brand-icon-footer {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 700;
        }
        .footer-brand p {
            color: var(--footer-link);
            font-size: 14px;
            line-height: 1.7;
            max-width: 300px;
            margin-bottom: 0;
        }
        .footer-col {
            flex: 1 1 160px;
            min-width: 140px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: var(--footer-link);
            font-size: 14px;
            transition: color var(--transition);
            text-decoration: none;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 20px 0 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            font-size: 13px;
            color: var(--footer-link);
            justify-content: space-between;
            align-items: center;
        }
        .footer-bottom a {
            color: var(--footer-link);
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .navbar-nav .nav-link {
                padding: 14px 18px !important;
            }
            .nav-cta-group {
                margin-left: 0;
                padding: 12px 16px 16px;
                flex-wrap: wrap;
            }
            .navbar-collapse {
                background: #fff;
                border-top: 1px solid var(--border);
                padding: 12px 16px;
                max-height: 80vh;
                overflow-y: auto;
            }
            .product-card .product-desc {
                min-height: auto;
            }
            .cta-section {
                padding: 28px 20px;
            }
            .cta-section h2 {
                font-size: 20px;
            }
        }
        @media (max-width: 767.98px) {
            section {
                padding: 40px 0;
            }
            .breadcrumb-section {
                padding: 20px 0 16px;
            }
            .page-title-wrap h1 {
                font-size: 26px;
            }
            .section-title h2 {
                font-size: 22px;
            }
            .footer-top {
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .product-card .product-img-wrap {
                aspect-ratio: 3 / 2;
            }
            .ranking-item {
                padding: 12px 14px;
                gap: 10px;
            }
            .ranking-num {
                width: 30px;
                height: 30px;
                font-size: 14px;
            }
        }
        @media (max-width: 575.98px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .section-title {
                margin-bottom: 24px;
            }
            .product-card .product-body {
                padding: 16px;
            }
            .cta-section {
                padding: 22px 16px;
            }
            .filter-btn {
                padding: 6px 14px;
                font-size: 13px;
            }
            .navbar-brand {
                font-size: 18px;
            }
            .navbar-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #2B6CB0;
            --primary-hover: #25599A;
            --primary-active: #1F4E7A;
            --accent: #E87A1C;
            --accent-hover: #C96412;
            --bg: #F7F9FC;
            --card-bg: #FFFFFF;
            --text: #2D3748;
            --text-secondary: #64748B;
            --border: #E2E8F0;
            --success: #2F855A;
            --dark-footer: #1A2B3C;
            --footer-link: #CBD5E0;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-badge: 999px;
            --shadow-card: 0 2px 8px rgba(43, 108, 176, 0.06), 0 8px 24px rgba(43, 108, 176, 0.08);
            --shadow-card-hover: 0 4px 12px rgba(43, 108, 176, 0.12), 0 12px 32px rgba(43, 108, 176, 0.12);
            --shadow-btn: 0 2px 8px rgba(43, 108, 176, 0.18);
            --transition: 0.2s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 15px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-hover);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1140px;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            background: #fff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
            position: sticky;
            top: 0;
            z-index: 1030;
            padding: 0;
        }
        .navbar {
            padding: 0;
            min-height: 68px;
        }
        .navbar-brand {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .navbar-brand:hover {
            color: var(--primary-hover);
        }
        .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .navbar-nav .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 22px 18px !important;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            position: relative;
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 12px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: 20px;
        }
        .btn {
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            padding: 10px 24px;
            transition: all var(--transition);
            border: none;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary-custom:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-primary-custom:active {
            background: var(--primary-active);
            color: #fff;
            transform: translateY(0);
        }
        .btn-outline-custom {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline-custom:hover {
            background: rgba(43, 108, 176, 0.06);
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-accent-custom {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(232, 122, 28, 0.25);
        }
        .btn-accent-custom:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-sm-custom {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 6px;
        }
        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 6px 10px;
            background: #fff;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrapper {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }
        .breadcrumb {
            margin: 0;
            padding: 0;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .active {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== Page Header ===== */
        .page-header-section {
            padding: 56px 0 32px;
            background: #fff;
        }
        .page-header-section h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            color: #1A2B3C;
            margin-bottom: 12px;
        }
        .page-header-section .page-lead {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 760px;
            margin-bottom: 0;
        }

        /* ===== Section Common ===== */
        .content-section {
            padding: 64px 0;
        }
        .content-section.alt-bg {
            background: #fff;
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: #1A2B3C;
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 720px;
        }

        /* ===== Card Base ===== */
        .custom-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            padding: 24px;
            transition: all var(--transition);
            height: 100%;
        }
        .custom-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .card-img-top {
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 16px;
            aspect-ratio: 4 / 3;
            background: #EDF2F7;
        }
        .card-img-top img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .card-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            background: rgba(43, 108, 176, 0.08);
            color: var(--primary);
            margin-bottom: 8px;
        }
        .card-badge.accent {
            background: rgba(232, 122, 28, 0.1);
            color: var(--accent);
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text);
            margin-bottom: 8px;
        }
        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        /* ===== Training Type Cards ===== */
        .training-type-card .card-img-top {
            aspect-ratio: 4 / 3;
            background: #EDF2F7;
            position: relative;
        }
        .training-type-card .card-img-top::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(26, 43, 60, 0.7) 100%);
            border-radius: 8px;
        }
        .training-type-card .type-name {
            position: absolute;
            bottom: 12px;
            left: 16px;
            z-index: 2;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
        }

        /* ===== Plan List ===== */
        .plan-list-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
            transition: all var(--transition);
        }
        .plan-list-item:last-child {
            border-bottom: none;
        }
        .plan-list-item:hover {
            padding-left: 8px;
        }
        .plan-rank {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(43, 108, 176, 0.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }
        .plan-info {
            flex: 1;
            min-width: 0;
        }
        .plan-info h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
            line-height: 1.5;
        }
        .plan-info p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 6px;
            line-height: 1.6;
        }
        .plan-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .plan-tags .tag {
            font-size: 12px;
            font-weight: 500;
            padding: 2px 10px;
            border-radius: var(--radius-badge);
            background: #F1F5F9;
            color: var(--text-secondary);
        }
        .plan-tags .tag.high {
            background: rgba(232, 122, 28, 0.1);
            color: var(--accent);
        }
        .plan-tags .tag.medium {
            background: rgba(43, 108, 176, 0.1);
            color: var(--primary);
        }
        .plan-tags .tag.low {
            background: rgba(47, 133, 90, 0.1);
            color: var(--success);
        }

        /* ===== Training Data ===== */
        .data-card {
            text-align: center;
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            padding: 28px 16px;
            transition: all var(--transition);
            height: 100%;
        }
        .data-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .data-card .data-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: rgba(43, 108, 176, 0.08);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 12px;
        }
        .data-card .data-num {
            font-size: 28px;
            font-weight: 700;
            color: #1A2B3C;
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .data-card .data-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ===== Tips List ===== */
        .tips-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .tips-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }
        .tips-list li:last-child {
            border-bottom: none;
        }
        .tips-list .tip-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(232, 122, 28, 0.1);
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }
        .tips-list .tip-text {
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
        }
        .tips-list .tip-text strong {
            color: #1A2B3C;
            font-weight: 600;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card);
        }
        .faq-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: #1A2B3C;
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .faq-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: #fff;
            padding: 64px 0;
        }
        .cta-box {
            background: var(--dark-footer);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            color: #fff;
        }
        .cta-box h2 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .cta-box p {
            font-size: 15px;
            color: #CBD5E0;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .cta-form .form-control {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            padding: 10px 14px;
            font-size: 14px;
            color: var(--text);
            transition: all var(--transition);
        }
        .cta-form .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.15);
        }
        .cta-form .form-label {
            font-size: 14px;
            font-weight: 500;
            color: #CBD5E0;
            margin-bottom: 6px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark-footer);
            color: #CBD5E0;
            padding: 56px 0 32px;
            font-size: 14px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .brand-icon-footer {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 700;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--footer-link);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 6px;
        }
        .footer-links a {
            color: var(--footer-link);
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: var(--footer-link);
            align-items: center;
        }
        .footer-bottom a {
            color: var(--footer-link);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .navbar-nav .nav-link {
                padding: 12px 16px !important;
            }
            .navbar-nav .nav-link.active::after {
                bottom: 6px;
                left: 16px;
                right: 16px;
            }
            .nav-cta-group {
                margin-left: 0;
                padding: 12px 0;
                flex-wrap: wrap;
            }
            .navbar-collapse {
                padding: 12px 0;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .page-header-section h1 {
                font-size: 26px;
            }
            .section-title {
                font-size: 22px;
            }
            .cta-box {
                padding: 32px 24px;
            }
        }
        @media (max-width: 767px) {
            .page-header-section {
                padding: 40px 0 24px;
            }
            .page-header-section h1 {
                font-size: 22px;
            }
            .content-section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 20px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .plan-list-item {
                flex-direction: column;
                gap: 8px;
            }
            .plan-rank {
                width: 32px;
                height: 32px;
                font-size: 14px;
                border-radius: 8px;
            }
            .cta-box {
                padding: 24px 16px;
            }
            .cta-box h2 {
                font-size: 20px;
            }
            .btn {
                padding: 10px 16px;
                font-size: 14px;
            }
            .btn-sm-custom {
                padding: 6px 12px;
                font-size: 12px;
            }
        }
        @media (max-width: 576px) {
            .navbar-brand {
                font-size: 18px;
            }
            .navbar-brand .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
            .page-header-section h1 {
                font-size: 20px;
            }
            .section-title {
                font-size: 18px;
                line-height: 1.4;
            }
            .custom-card {
                padding: 16px;
            }
            .data-card {
                padding: 20px 12px;
            }
            .data-card .data-num {
                font-size: 22px;
            }
            .faq-item {
                padding: 16px;
            }
            .breadcrumb {
                font-size: 13px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2B6CB0;
            --primary-hover: #25599A;
            --primary-active: #1F4E7A;
            --accent: #E87A1C;
            --accent-hover: #C96412;
            --bg: #F7F9FC;
            --card-bg: #FFFFFF;
            --text: #2D3748;
            --text-secondary: #64748B;
            --border: #E2E8F0;
            --success: #2F855A;
            --dark-footer: #1A2B3C;
            --footer-link: #CBD5E0;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-badge: 999px;
            --shadow-card: 0 2px 8px rgba(43, 108, 176, 0.06), 0 8px 24px rgba(43, 108, 176, 0.08);
            --shadow-card-hover: 0 4px 12px rgba(43, 108, 176, 0.12), 0 12px 32px rgba(43, 108, 176, 0.12);
            --shadow-btn: 0 2px 8px rgba(43, 108, 176, 0.18);
            --transition: 0.2s ease;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 15px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-hover);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

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

        .container {
            max-width: 1140px;
            padding-left: 16px;
            padding-right: 16px;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            background: #fff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
            position: sticky;
            top: 0;
            z-index: 1030;
            padding: 0;
        }
        .navbar {
            padding: 0;
            min-height: 68px;
        }
        .navbar-brand {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .navbar-brand:hover {
            color: var(--primary-hover);
        }
        .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .navbar-nav .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 22px 18px !important;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            position: relative;
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 12px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: 20px;
        }

        /* ===== Buttons ===== */
        .btn {
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            padding: 10px 24px;
            transition: all var(--transition);
            border: none;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary-custom:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-primary-custom:active {
            background: var(--primary-active);
            color: #fff;
            transform: translateY(0);
        }
        .btn-outline-custom {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline-custom:hover {
            background: rgba(43, 108, 176, 0.06);
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-accent-custom {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(232, 122, 28, 0.25);
        }
        .btn-accent-custom:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-sm-custom {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 6px;
        }

        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 6px 10px;
            background: #fff;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(43,108,176,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== Section Common ===== */
        .section-py {
            padding: 64px 0;
        }
        .section-head {
            margin-bottom: 32px;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: #1A2B3C;
            margin-bottom: 8px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 720px;
        }

        /* ===== Breadcrumbs ===== */
        .breadcrumb-section {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
            margin-bottom: 32px;
        }
        .breadcrumb-custom {
            margin: 0;
            padding: 0;
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .breadcrumb-custom li {
            display: flex;
            align-items: center;
        }
        .breadcrumb-custom li + li::before {
            content: "›";
            margin: 0 10px;
            color: var(--text-secondary);
        }
        .breadcrumb-custom a {
            color: var(--text-secondary);
        }
        .breadcrumb-custom a:hover {
            color: var(--primary);
        }
        .breadcrumb-custom .current {
            color: var(--primary);
            font-weight: 600;
        }
        .page-h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            color: #1A2B3C;
            margin: 16px 0 8px;
        }
        .page-intro {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 800px;
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ===== Featured News Card ===== */
        .featured-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
        }
        .featured-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .featured-img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }
        .featured-body {
            padding: 24px;
        }
        .featured-tag {
            display: inline-block;
            background: rgba(43,108,176,0.1);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .featured-title {
            font-size: 22px;
            font-weight: 700;
            color: #1A2B3C;
            line-height: 1.35;
            margin-bottom: 10px;
        }
        .featured-excerpt {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .featured-link {
            font-weight: 600;
            font-size: 15px;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .featured-link i {
            transition: transform var(--transition);
        }
        .featured-link:hover i {
            transform: translateX(4px);
        }

        /* ===== News List ===== */
        .news-list-item {
            display: flex;
            gap: 16px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px;
            margin-bottom: 16px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .news-list-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .news-thumb {
            width: 140px;
            height: 100px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }
        .news-content {
            flex: 1;
            min-width: 0;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 6px;
        }
        .news-date {
            font-size: 13px;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-tag {
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: var(--radius-badge);
            background: #F0F5FA;
            color: var(--primary);
            letter-spacing: 0.3px;
        }
        .news-tag.orange {
            background: #FDE8D7;
            color: var(--accent);
        }
        .news-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 4px;
        }
        .news-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .news-link:hover {
            color: var(--primary-hover);
        }

        /* ===== Schedule Cards ===== */
        .schedule-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 16px;
        }
        .schedule-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
            text-align: center;
        }
        .schedule-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .schedule-date {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }
        .schedule-name {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
        .schedule-status {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.5px;
        }
        .status-upcoming {
            background: #E1F0FA;
            color: var(--primary);
        }
        .status-open {
            background: #E6F4EA;
            color: var(--success);
        }
        .status-prep {
            background: #FDE8D7;
            color: var(--accent);
        }
        .status-finished {
            background: #E2E8F0;
            color: var(--text-secondary);
        }

        /* ===== Topic Cards ===== */
        .topic-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .topic-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .topic-body {
            padding: 20px;
        }
        .topic-title {
            font-size: 18px;
            font-weight: 700;
            color: #1A2B3C;
            margin-bottom: 8px;
        }
        .topic-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 12px;
            line-height: 1.6;
        }
        .topic-link {
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
        }

        /* ===== Analysis / Comments ===== */
        .analysis-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            margin-bottom: 16px;
            transition: box-shadow var(--transition);
        }
        .analysis-item:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .analysis-author {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
        }
        .author-avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .author-name {
            font-weight: 600;
            color: var(--text);
        }
        .analysis-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Subscribe CTA ===== */
        .subscribe-cta {
            background: var(--primary);
            border-radius: var(--radius-card);
            padding: 40px 32px;
            color: #fff;
            box-shadow: var(--shadow-card-hover);
        }
        .subscribe-cta h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .subscribe-cta p {
            font-size: 15px;
            color: rgba(255,255,255,0.85);
            margin-bottom: 24px;
            line-height: 1.7;
            max-width: 520px;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .subscribe-form input[type="email"] {
            flex: 1;
            min-width: 220px;
            padding: 12px 16px;
            border-radius: var(--radius-input);
            border: 1px solid transparent;
            font-size: 15px;
            background: #fff;
            color: var(--text);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .subscribe-form input[type="email"]:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(43,108,176,0.15);
        }
        .subscribe-form .btn {
            white-space: nowrap;
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            font-weight: 600;
        }
        .btn-white:hover {
            background: #f0f4f8;
            color: var(--primary-hover);
        }

        /* ===== Friendly Links ===== */
        .friendly-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .friendly-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            color: var(--text);
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition);
        }
        .friendly-link:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark-footer);
            color: #fff;
            padding: 56px 0 32px;
            margin-top: 64px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-logo .brand-icon-footer {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 700;
        }
        .footer-brand p {
            color: rgba(255,255,255,0.7);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--footer-link);
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.15);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: rgba(255,255,255,0.6);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.6);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .nav-cta-group {
                margin-left: 0;
                margin-top: 12px;
                width: 100%;
                justify-content: flex-start;
            }
            .navbar-collapse {
                padding: 16px 0;
            }
            .navbar-nav .nav-link {
                padding: 12px 16px !important;
            }
            .navbar-nav .nav-link.active::after {
                bottom: 6px;
                left: 16px;
                right: 16px;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .featured-img {
                height: 220px;
            }
        }

        @media (max-width: 767.98px) {
            .section-py {
                padding: 40px 0;
            }
            .page-h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 22px;
            }
            .featured-img {
                height: 180px;
            }
            .news-list-item {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: 160px;
            }
            .schedule-grid {
                grid-template-columns: 1fr 1fr;
            }
            .subscribe-cta {
                padding: 28px 20px;
            }
            .subscribe-form input[type="email"] {
                min-width: 100%;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
            .page-h1 {
                font-size: 24px;
            }
            .section-title {
                font-size: 20px;
            }
            .featured-title {
                font-size: 18px;
            }
            .schedule-grid {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .nav-cta-group {
                flex-direction: column;
                align-items: stretch;
            }
            .nav-cta-group .btn {
                width: 100%;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}