/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #3B8FCC;
            --primary-dark: #2E72A8;
            --primary-light: rgba(59, 143, 204, 0.08);
            --primary-border: rgba(59, 143, 204, 0.1);
            --secondary: #FF7A45;
            --secondary-dark: #E5632E;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --heading: #1A2A3A;
            --body: #3D4F60;
            --muted: #8A9BAE;
            --link: #3B8FCC;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-round: 50%;
            --shadow: 0 4px 20px rgba(59, 143, 204, 0.08);
            --shadow-hover: 0 8px 32px rgba(59, 143, 204, 0.15);
            --border: 1px solid rgba(59, 143, 204, 0.1);
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --nav-height: 56px;
            --section-padding: 100px 0;
            --section-padding-mobile: 50px 0;
            --container-max: 1200px;
            --transition: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.8;
            color: var(--body);
            background: var(--bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--link);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        button,
        input,
        textarea {
            font-family: var(--font);
            font-size: 16px;
        }

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

        ul,
        ol {
            padding-left: 0;
            list-style: none;
            margin-bottom: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--heading);
            line-height: 1.3;
            font-weight: 700;
            margin-top: 0;
        }

        p {
            margin-bottom: 0;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Section Spacing ===== */
        section {
            padding: var(--section-padding);
        }

        .section-title {
            font-size: 34px;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 16px;
            text-align: center;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--muted);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px auto;
            line-height: 1.8;
        }

        @media (max-width: 768px) {
            section {
                padding: var(--section-padding-mobile);
            }
            .section-title {
                font-size: 26px;
            }
            .section-subtitle {
                font-size: 15px;
                margin-bottom: 32px;
            }
        }

        /* ===== Button System ===== */
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            min-height: 44px;
            transition: filter var(--transition), transform var(--transition), box-shadow var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .btn-primary-custom:hover {
            filter: brightness(1.08);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(59, 143, 204, 0.25);
            color: #fff;
        }
        .btn-primary-custom:active {
            filter: brightness(0.95);
            transform: translateY(0);
        }
        .btn-primary-custom:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-secondary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            padding: 12px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            min-height: 44px;
            transition: background var(--transition), color var(--transition), transform var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .btn-secondary-custom:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-secondary-custom:active {
            transform: translateY(0);
        }
        .btn-secondary-custom:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--secondary);
            color: #fff;
            border: none;
            padding: 14px 40px;
            font-size: 17px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            min-height: 48px;
            transition: filter var(--transition), transform var(--transition), box-shadow var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .btn-cta:hover {
            filter: brightness(1.08);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 122, 69, 0.3);
            color: #fff;
        }
        .btn-cta:active {
            filter: brightness(0.95);
            transform: translateY(0);
        }
        .btn-cta:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
        }

        /* ===== Tag / Badge ===== */
        .badge-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.3px;
            border: 1px solid var(--primary-border);
            transition: background var(--transition), color var(--transition);
        }
        .badge-tag:hover {
            background: var(--primary);
            color: #fff;
        }

        .badge-hot {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }
        .badge-hot:hover {
            background: var(--secondary-dark);
            color: #fff;
        }

        /* ===== Card ===== */
        .card-custom {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: var(--border);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .card-custom:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .card-custom .card-img-top {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            transition: transform var(--transition);
        }
        .card-custom:hover .card-img-top {
            transform: scale(1.02);
        }

        .card-custom .card-body {
            padding: 24px;
        }

        .card-custom .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--heading);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .card-custom .card-text {
            font-size: 14px;
            color: var(--body);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .card-custom .card-footer-info {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            padding-top: 12px;
            border-top: 1px solid rgba(59, 143, 204, 0.06);
        }

        /* ===== Navigation ===== */
        .navbar-main {
            height: var(--nav-height);
            background: #fff;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            display: flex;
            align-items: center;
            padding: 0 20px;
        }

        .navbar-main .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
        }

        .navbar-main .nav-left {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .navbar-main .nav-logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--heading);
            letter-spacing: 0.5px;
            text-decoration: none;
            white-space: nowrap;
        }
        .navbar-main .nav-logo:hover {
            color: var(--primary);
        }
        .navbar-main .nav-logo .logo-highlight {
            color: var(--primary);
        }

        .navbar-main .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        .navbar-main .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--body);
            text-decoration: none;
            padding: 4px 0;
            position: relative;
            transition: color var(--transition);
        }
        .navbar-main .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .navbar-main .nav-links a:hover {
            color: var(--primary);
        }
        .navbar-main .nav-links a:hover::after {
            width: 100%;
        }
        .navbar-main .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .navbar-main .nav-links a.active::after {
            width: 100%;
        }

        .navbar-main .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .navbar-main .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--secondary);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: filter var(--transition), transform var(--transition);
            white-space: nowrap;
        }
        .navbar-main .nav-cta:hover {
            filter: brightness(1.08);
            transform: translateY(-1px);
            color: #fff;
        }

        .navbar-main .nav-search {
            font-size: 18px;
            color: var(--muted);
            cursor: pointer;
            transition: color var(--transition);
        }
        .navbar-main .nav-search:hover {
            color: var(--primary);
        }

        /* Hamburger */
        .navbar-main .nav-toggle {
            display: none;
            font-size: 24px;
            color: var(--heading);
            cursor: pointer;
            background: none;
            border: none;
            padding: 4px 8px;
            transition: color var(--transition);
        }
        .navbar-main .nav-toggle:hover {
            color: var(--primary);
        }

        @media (max-width: 991px) {
            .navbar-main .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px 24px;
                gap: 16px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                border-top: 1px solid var(--primary-border);
            }
            .navbar-main .nav-links.open {
                display: flex;
            }
            .navbar-main .nav-links a {
                font-size: 16px;
                padding: 8px 0;
            }
            .navbar-main .nav-toggle {
                display: block;
            }
        }

        @media (max-width: 576px) {
            .navbar-main .nav-cta span {
                display: none;
            }
            .navbar-main .nav-cta i {
                font-size: 16px;
            }
            .navbar-main .nav-logo {
                font-size: 17px;
            }
        }

        /* ===== Hero Split Layout ===== */
        .hero-split {
            min-height: calc(100vh - var(--nav-height));
            margin-top: var(--nav-height);
            display: flex;
            align-items: center;
            background: var(--bg);
            overflow: hidden;
        }

        .hero-split .hero-content {
            flex: 0 0 55%;
            max-width: 55%;
            padding: 80px 60px 80px 0;
        }

        .hero-split .hero-visual {
            flex: 0 0 45%;
            max-width: 45%;
            min-height: 500px;
            background: url('/assets/images/coverpic/cover-1.png') center center / cover no-repeat;
            border-radius: var(--radius) 0 0 var(--radius);
            position: relative;
        }

        .hero-split .hero-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(245, 248, 252, 0.3) 0%, transparent 40%);
            border-radius: var(--radius) 0 0 var(--radius);
        }

        .hero-split .hero-title {
            font-size: 52px;
            font-weight: 800;
            color: var(--heading);
            line-height: 1.2;
            margin-bottom: 20px;
        }
        .hero-split .hero-title .highlight {
            color: var(--primary);
        }

        .hero-split .hero-sub {
            font-size: 18px;
            color: var(--body);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 520px;
        }

        .hero-split .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        @media (max-width: 991px) {
            .hero-split {
                flex-direction: column;
                min-height: auto;
            }
            .hero-split .hero-content {
                flex: 0 0 100%;
                max-width: 100%;
                padding: 60px 20px 40px 20px;
                text-align: center;
            }
            .hero-split .hero-sub {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-split .hero-actions {
                justify-content: center;
            }
            .hero-split .hero-visual {
                flex: 0 0 100%;
                max-width: 100%;
                min-height: 320px;
                border-radius: 0;
                width: 100%;
            }
            .hero-split .hero-visual::after {
                border-radius: 0;
            }
            .hero-split .hero-title {
                font-size: 36px;
            }
        }

        @media (max-width: 576px) {
            .hero-split .hero-title {
                font-size: 28px;
            }
            .hero-split .hero-sub {
                font-size: 16px;
            }
            .hero-split .hero-visual {
                min-height: 220px;
            }
            .hero-split .hero-content {
                padding: 40px 16px 30px 16px;
            }
        }

        /* ===== Brand Story ===== */
        .story-section {
            background: #fff;
        }

        .story-grid {
            display: flex;
            align-items: center;
            gap: 60px;
        }

        .story-grid .story-text {
            flex: 0 0 50%;
        }

        .story-grid .story-text .story-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
        }

        .story-grid .story-text h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 16px;
        }

        .story-grid .story-text p {
            font-size: 16px;
            color: var(--body);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .story-grid .story-text .story-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }
        .story-grid .story-text .story-link:hover {
            gap: 12px;
        }

        .story-grid .story-visual {
            flex: 0 0 50%;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            min-height: 320px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        }

        @media (max-width: 991px) {
            .story-grid {
                flex-direction: column;
                gap: 32px;
            }
            .story-grid .story-text,
            .story-grid .story-visual {
                flex: 0 0 100%;
                width: 100%;
            }
            .story-grid .story-text h2 {
                font-size: 28px;
            }
            .story-grid .story-visual {
                min-height: 240px;
            }
        }

        @media (max-width: 576px) {
            .story-grid .story-text h2 {
                font-size: 24px;
            }
            .story-grid .story-text p {
                font-size: 15px;
            }
            .story-grid .story-visual {
                min-height: 180px;
            }
        }

        /* ===== Featured Content (2-1-2) ===== */
        .featured-section {
            background: var(--bg);
        }

        .featured-grid {
            display: grid;
            gap: 24px;
        }

        .featured-grid .row-1,
        .featured-grid .row-3 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .featured-grid .row-2 {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

        .featured-grid .row-2 .card-custom {
            max-width: 720px;
            margin: 0 auto;
            width: 100%;
        }

        .featured-grid .row-2 .card-custom .card-img-top {
            aspect-ratio: 21 / 9;
        }

        @media (max-width: 768px) {
            .featured-grid .row-1,
            .featured-grid .row-3 {
                grid-template-columns: 1fr;
            }
            .featured-grid .row-2 .card-custom {
                max-width: 100%;
            }
        }

        /* ===== CMS / 资讯板块 ===== */
        .cms-section {
            background: #fff;
        }

        .cms-list {
            display: grid;
            gap: 20px;
        }

        .cms-item {
            display: flex;
            gap: 20px;
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: var(--border);
            padding: 20px;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .cms-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .cms-item .cms-thumb {
            flex: 0 0 120px;
            width: 120px;
            aspect-ratio: 16 / 9;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--primary-light);
        }
        .cms-item .cms-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .cms-item .cms-body {
            flex: 1;
            min-width: 0;
        }

        .cms-item .cms-body .cms-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--heading);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .cms-item .cms-body .cms-title a {
            color: inherit;
            transition: color var(--transition);
        }
        .cms-item .cms-body .cms-title a:hover {
            color: var(--primary);
        }

        .cms-item .cms-body .cms-summary {
            font-size: 14px;
            color: var(--body);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }

        .cms-item .cms-body .cms-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--muted);
        }
        .cms-item .cms-body .cms-meta .cms-category {
            color: var(--primary);
            font-weight: 500;
        }
        .cms-item .cms-body .cms-meta .cms-date {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .cms-empty {
            text-align: center;
            padding: 60px 20px;
            background: rgba(59, 143, 204, 0.03);
            border-radius: var(--radius);
            border: 1px dashed var(--primary-border);
            color: var(--muted);
            font-size: 15px;
        }

        @media (max-width: 576px) {
            .cms-item {
                flex-direction: column;
                padding: 16px;
            }
            .cms-item .cms-thumb {
                flex: 0 0 100%;
                width: 100%;
                aspect-ratio: 16 / 9;
            }
        }

        /* ===== Trust / 信任背书 ===== */
        .trust-section {
            background: var(--bg);
        }

        .trust-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-bottom: 60px;
        }

        .trust-stats .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: var(--border);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .trust-stats .stat-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .trust-stats .stat-item .stat-number {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .trust-stats .stat-item .stat-label {
            font-size: 14px;
            color: var(--muted);
            font-weight: 500;
        }

        .trust-reviews {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 50px;
        }

        .trust-reviews .review-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: var(--border);
            padding: 28px 24px;
            position: relative;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .trust-reviews .review-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .trust-reviews .review-card::before {
            content: '\201C';
            font-size: 48px;
            color: var(--primary);
            opacity: 0.2;
            position: absolute;
            top: 12px;
            left: 20px;
            font-family: Georgia, serif;
            line-height: 1;
        }

        .trust-reviews .review-card .review-text {
            font-size: 14px;
            color: var(--body);
            line-height: 1.7;
            margin-bottom: 16px;
            padding-top: 8px;
        }

        .trust-reviews .review-card .review-author {
            font-size: 13px;
            font-weight: 600;
            color: var(--heading);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .trust-reviews .review-card .review-author i {
            color: var(--muted);
            font-size: 14px;
        }

        .trust-brands {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 40px;
            padding: 32px 0;
            opacity: 0.5;
            filter: grayscale(1);
        }
        .trust-brands span {
            font-size: 22px;
            font-weight: 700;
            color: var(--muted);
            letter-spacing: 1px;
        }

        @media (max-width: 991px) {
            .trust-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .trust-reviews {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 576px) {
            .trust-stats {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .trust-stats .stat-item .stat-number {
                font-size: 28px;
            }
            .trust-reviews {
                grid-template-columns: 1fr;
            }
            .trust-brands {
                gap: 24px;
            }
            .trust-brands span {
                font-size: 18px;
            }
        }

        /* ===== FAQ / Accordion ===== */
        .faq-section {
            background: #fff;
        }

        .faq-section .accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-section .accordion-item {
            border: none;
            border-bottom: 1px solid var(--primary-border);
            background: transparent;
            border-radius: 0 !important;
        }

        .faq-section .accordion-button {
            font-size: 17px;
            font-weight: 600;
            color: var(--heading);
            background: transparent;
            box-shadow: none;
            padding: 20px 0;
            padding-right: 40px;
            position: relative;
            transition: color var(--transition);
        }
        .faq-section .accordion-button::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--primary);
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%) rotate(0deg);
            background: none;
            width: auto;
            height: auto;
            transition: transform var(--transition);
        }
        .faq-section .accordion-button:not(.collapsed)::after {
            transform: translateY(-50%) rotate(180deg);
        }
        .faq-section .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: transparent;
        }
        .faq-section .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }
        .faq-section .accordion-button:hover {
            color: var(--primary);
        }

        .faq-section .accordion-body {
            font-size: 15px;
            color: var(--body);
            line-height: 1.8;
            padding: 0 0 24px 0;
        }

        /* ===== CTA / Subscribe ===== */
        .cta-section {
            background: var(--primary);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.08;
        }

        .cta-section .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-section .cta-title {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-section .cta-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 28px;
        }

        .cta-section .cta-form {
            display: flex;
            gap: 12px;
            max-width: 500px;
            margin: 0 auto;
        }

        .cta-section .cta-form input[type="email"] {
            flex: 1;
            padding: 14px 20px;
            font-size: 15px;
            border: none;
            border-radius: var(--radius-sm);
            background: #fff;
            color: var(--body);
            outline: none;
            transition: box-shadow var(--transition);
            min-height: 48px;
        }
        .cta-section .cta-form input[type="email"]:focus {
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
        }
        .cta-section .cta-form input[type="email"]::placeholder {
            color: var(--muted);
        }

        .cta-section .cta-form button {
            background: var(--secondary);
            color: #fff;
            border: none;
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            min-height: 48px;
            cursor: pointer;
            transition: filter var(--transition), transform var(--transition);
            white-space: nowrap;
        }
        .cta-section .cta-form button:hover {
            filter: brightness(1.08);
            transform: translateY(-1px);
        }
        .cta-section .cta-form button:active {
            transform: translateY(0);
        }

        @media (max-width: 576px) {
            .cta-section {
                padding: 50px 0;
            }
            .cta-section .cta-title {
                font-size: 26px;
            }
            .cta-section .cta-form {
                flex-direction: column;
                gap: 12px;
            }
            .cta-section .cta-form button {
                width: 100%;
            }
        }

        /* ===== Footer ===== */
        .footer-main {
            background: #1A2A3A;
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px 0;
        }

        .footer-main .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-main .footer-col .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            display: inline-block;
        }
        .footer-main .footer-col .footer-logo .logo-highlight {
            color: var(--primary);
        }

        .footer-main .footer-col .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 300px;
        }

        .footer-main .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-main .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-main .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .footer-main .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-main .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 16px;
        }
        .footer-main .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-round);
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 18px;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .footer-main .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-main .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-main .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition);
        }
        .footer-main .footer-bottom a:hover {
            color: var(--primary);
        }

        @media (max-width: 991px) {
            .footer-main .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 576px) {
            .footer-main .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-main .footer-col .footer-desc {
                max-width: 100%;
            }
            .footer-main .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-custom {
            font-size: 13px;
            color: var(--muted);
            padding: 16px 0;
            background: transparent;
        }
        .breadcrumb-custom a {
            color: var(--muted);
            transition: color var(--transition);
        }
        .breadcrumb-custom a:hover {
            color: var(--primary);
        }
        .breadcrumb-custom .separator {
            margin: 0 8px;
            color: var(--muted);
        }
        .breadcrumb-custom .current {
            color: var(--body);
            font-weight: 500;
        }

        /* ===== Scroll to top ===== */
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-round);
            background: var(--primary);
            color: #fff;
            border: none;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(59, 143, 204, 0.25);
            transition: opacity var(--transition), transform var(--transition);
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            z-index: 1060;
        }
        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .scroll-top:hover {
            filter: brightness(1.1);
            transform: translateY(-2px);
        }

        /* ===== Responsive help ===== */
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Placeholder image styling ===== */
        .img-placeholder-bg {
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--muted);
            font-size: 14px;
            min-height: 120px;
        }

/* roulang page: article */
:root {
            --primary: #3B8FCC;
            --primary-dark: #2E72A3;
            --primary-light: rgba(59, 143, 204, 0.1);
            --accent: #FF7A45;
            --accent-dark: #E66530;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --text-dark: #1A2A3A;
            --text-body: #3D4F60;
            --text-muted: #8A9BAE;
            --border-color: rgba(59, 143, 204, 0.12);
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 4px 20px rgba(59, 143, 204, 0.08);
            --shadow-hover: 0 8px 32px rgba(59, 143, 204, 0.15);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --nav-height: 60px;
            --section-gap: 80px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text-body);
            line-height: 1.8;
            font-size: 16px;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航 */
        .navbar-main {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--card-bg);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border-color);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }

        .nav-left {
            display: flex;
            align-items: center;
            gap: 36px;
            height: 100%;
        }

        .nav-logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 0;
            text-decoration: none;
        }
        .nav-logo .logo-highlight {
            color: var(--primary);
        }
        .nav-logo:hover {
            color: var(--text-dark);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            height: 100%;
        }
        .nav-links a {
            position: relative;
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            padding: 0 14px;
            height: 100%;
            display: flex;
            align-items: center;
            transition: color 0.25s ease;
            text-decoration: none;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.3s ease;
            border-radius: 2px;
        }
        .nav-links a:hover {
            color: var(--text-dark);
        }
        .nav-links a:hover::after {
            width: 60%;
        }
        .nav-links a.active {
            color: var(--text-dark);
            font-weight: 600;
        }
        .nav-links a.active::after {
            width: 70%;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .nav-cta i {
            font-size: 15px;
        }
        .nav-cta:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(255, 122, 69, 0.3);
        }

        .nav-search {
            color: var(--text-muted);
            font-size: 18px;
            cursor: pointer;
            transition: color 0.25s ease;
            padding: 6px;
        }
        .nav-search:hover {
            color: var(--primary);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 6px 8px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                padding: 16px 24px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
                border-bottom: 1px solid var(--border-color);
                height: auto;
                gap: 4px;
                z-index: 1040;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                height: 44px;
                padding: 0 12px;
                border-radius: 6px;
            }
            .nav-links a::after {
                display: none;
            }
            .nav-links a.active {
                background: var(--primary-light);
                color: var(--primary);
            }
            .nav-links a:hover {
                background: var(--primary-light);
                color: var(--primary);
            }
            .nav-toggle {
                display: block;
            }
            .nav-cta span {
                display: none;
            }
            .nav-cta i {
                font-size: 17px;
            }
            .nav-cta {
                padding: 8px 12px;
            }
        }

        @media (max-width: 576px) {
            .nav-inner {
                padding: 0 16px;
            }
            .nav-logo {
                font-size: 19px;
            }
            .nav-right {
                gap: 10px;
            }
        }

        /* 文章页主区域 */
        .article-main {
            padding: 48px 0 80px;
        }

        .article-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }

        .breadcrumb-custom {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb-custom a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.2s;
        }
        .breadcrumb-custom a:hover {
            color: var(--primary);
        }
        .breadcrumb-custom .sep {
            color: var(--text-muted);
            opacity: 0.5;
            margin: 0 4px;
        }
        .breadcrumb-custom .current {
            color: var(--text-dark);
            font-weight: 500;
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-header {
            margin-bottom: 32px;
        }
        .article-header h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.35;
            margin: 0 0 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .article-meta .meta-category {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 20px;
        }
        .article-meta .meta-date {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .article-meta .meta-date i {
            font-size: 14px;
        }

        .article-featured-image {
            margin-bottom: 32px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .article-featured-image img {
            width: 100%;
            height: auto;
            aspect-ratio: 16/9;
            object-fit: cover;
        }

        .article-content {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-content h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 40px 0 16px;
            line-height: 1.35;
        }
        .article-content h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 32px 0 12px;
            line-height: 1.4;
        }
        .article-content p {
            margin-bottom: 20px;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-dark);
            font-style: normal;
        }
        .article-content blockquote p {
            margin-bottom: 0;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content code {
            background: #EFF3F8;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--text-dark);
        }
        .article-content pre {
            background: #1A2A3A;
            color: #E8EDF2;
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin-bottom: 24px;
            font-size: 14px;
            line-height: 1.6;
        }
        .article-content pre code {
            background: none;
            padding: 0;
            color: inherit;
            font-size: inherit;
        }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content a:hover {
            color: var(--primary-dark);
        }

        .article-footer-meta {
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-tags .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            padding: 4px 14px;
            border-radius: 20px;
            transition: all 0.25s ease;
        }
        .article-tags .tag:hover {
            background: var(--primary);
            color: #fff;
        }

        .article-nav-links {
            margin-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .article-nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-muted);
            font-size: 14px;
            transition: color 0.2s;
            text-decoration: none;
        }
        .article-nav-links a:hover {
            color: var(--primary);
        }

        /* 相关推荐 */
        .related-section {
            margin-top: 64px;
            padding-top: 48px;
            border-top: 1px solid var(--border-color);
        }
        .related-section h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 28px;
            text-align: center;
        }
        .related-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .related-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all 0.35s ease;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .related-card .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
        }
        .related-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-title a {
            color: var(--text-dark);
            text-decoration: none;
        }
        .related-card .card-title a:hover {
            color: var(--primary);
        }
        .related-card .card-date {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: auto;
        }

        /* 无文章状态 */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
        }
        .not-found-box .nf-icon {
            font-size: 52px;
            color: var(--text-muted);
            margin-bottom: 16px;
            opacity: 0.5;
        }
        .not-found-box h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .not-found-box .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 10px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .not-found-box .btn-home:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(59, 143, 204, 0.25);
        }

        /* 内容未找到时的回退图片 */
        .img-placeholder {
            background: var(--primary-light);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 200px;
            color: var(--text-muted);
            font-size: 14px;
        }

        /* 页脚 */
        .footer-main {
            background: #1A2A3A;
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            display: inline-block;
            margin-bottom: 12px;
            text-decoration: none;
        }
        .footer-logo .logo-highlight {
            color: var(--primary);
        }
        .footer-logo:hover {
            color: #fff;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 16px;
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 16px;
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-col h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color 0.25s ease;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-desc {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .article-header h1 {
                font-size: 26px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-main {
                padding: 32px 0 60px;
            }
            .breadcrumb-custom .current {
                max-width: 200px;
            }
        }

        @media (max-width: 576px) {
            .article-header h1 {
                font-size: 22px;
            }
            .article-content {
                font-size: 15px;
            }
            .article-content h2 {
                font-size: 22px;
            }
            .article-content h3 {
                font-size: 18px;
            }
            .article-meta {
                gap: 10px 16px;
                font-size: 13px;
            }
            .container {
                padding: 0 16px;
            }
            .related-card .card-body {
                padding: 14px 16px 16px;
            }
            .related-section h2 {
                font-size: 22px;
            }
            .not-found-box {
                padding: 48px 16px;
            }
        }

        /* 辅助 */
        .text-center {
            text-align: center;
        }
        .mt-4 {
            margin-top: 24px;
        }
        .mb-4 {
            margin-bottom: 24px;
        }

        /* JSON-LD 隐藏 */
        .json-ld-hidden {
            display: none;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #3B8FCC;
            --primary-dark: #2E73A8;
            --primary-light: rgba(59, 143, 204, 0.1);
            --primary-shadow: rgba(59, 143, 204, 0.08);
            --primary-shadow-hover: rgba(59, 143, 204, 0.15);
            --accent: #FF7A45;
            --accent-dark: #E8652E;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --text-dark: #1A2A3A;
            --text-body: #3D4F60;
            --text-light: #8A9BAE;
            --text-white: rgba(255, 255, 255, 0.85);
            --border-color: rgba(59, 143, 204, 0.1);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --shadow-card: 0 4px 20px var(--primary-shadow);
            --shadow-card-hover: 0 8px 32px var(--primary-shadow-hover);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition: 0.3s ease;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            background-color: var(--bg);
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.8;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        /* ===== Typography ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-stack);
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
        }
        h1 {
            font-size: 48px;
        }
        h2 {
            font-size: 34px;
        }
        h3 {
            font-size: 24px;
            font-weight: 600;
        }
        h5 {
            font-size: 18px;
            font-weight: 600;
        }
        /* ===== Buttons ===== */
        .btn-primary-custom {
            background-color: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 12px 32px;
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            min-height: 44px;
            transition: filter var(--transition), background-color var(--transition), transform var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .btn-primary-custom:hover {
            filter: brightness(1.1);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-primary-custom:active {
            filter: brightness(0.95);
            transform: translateY(0);
        }
        .btn-outline-custom {
            background-color: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 10px 28px;
            font-size: 16px;
            font-weight: 600;
            min-height: 44px;
            transition: background-color var(--transition), color var(--transition), transform var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .btn-outline-custom:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-outline-custom:active {
            transform: translateY(0);
        }
        .btn-accent {
            background-color: var(--accent);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 12px 32px;
            font-size: 16px;
            font-weight: 600;
            min-height: 44px;
            transition: filter var(--transition), transform var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .btn-accent:hover {
            filter: brightness(1.1);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-accent:active {
            filter: brightness(0.95);
            transform: translateY(0);
        }
        /* ===== Cards ===== */
        .card-custom {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .card-custom .card-img-top {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .card-custom:hover .card-img-top {
            transform: scale(1.02);
        }
        .card-custom .card-body {
            padding: 24px;
        }
        .card-custom .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .card-custom .card-text {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .card-custom .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            padding: 2px 12px;
            border-radius: 20px;
            font-weight: 500;
        }
        /* ===== Tags / Badges ===== */
        .badge-custom {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            padding: 3px 14px;
            border-radius: 20px;
            font-weight: 500;
        }
        .badge-custom-primary {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            padding: 3px 14px;
            border-radius: 20px;
            font-weight: 500;
        }
        /* ===== Navigation ===== */
        .navbar-main {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--card-bg);
            box-shadow: 0 2px 12px rgba(59, 143, 204, 0.08);
            height: 56px;
            display: flex;
            align-items: center;
        }
        .navbar-main .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .navbar-main .nav-left {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .navbar-main .nav-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            text-decoration: none;
            white-space: nowrap;
        }
        .navbar-main .nav-logo .logo-highlight {
            color: var(--primary);
        }
        .navbar-main .nav-logo:hover {
            color: var(--text-dark);
        }
        .navbar-main .nav-links {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .navbar-main .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            text-decoration: none;
            padding: 4px 0;
            position: relative;
            transition: color var(--transition);
        }
        .navbar-main .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .navbar-main .nav-links a:hover {
            color: var(--text-dark);
        }
        .navbar-main .nav-links a:hover::after {
            width: 100%;
        }
        .navbar-main .nav-links a.active {
            color: var(--text-dark);
            font-weight: 600;
        }
        .navbar-main .nav-links a.active::after {
            width: 100%;
        }
        .navbar-main .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .navbar-main .nav-cta {
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            transition: filter var(--transition), transform var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .navbar-main .nav-cta:hover {
            filter: brightness(1.1);
            color: #fff;
            transform: translateY(-1px);
        }
        .navbar-main .nav-search {
            font-size: 18px;
            color: var(--text-light);
            cursor: pointer;
            transition: color var(--transition);
        }
        .navbar-main .nav-search:hover {
            color: var(--primary);
        }
        .navbar-main .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px;
        }
        /* ===== Footer ===== */
        .footer-main {
            background: #1A2A3A;
            color: var(--text-white);
            padding: 60px 0 24px;
        }
        .footer-main .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-main .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            text-decoration: none;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-main .footer-logo .logo-highlight {
            color: var(--primary);
        }
        .footer-main .footer-logo:hover {
            color: #fff;
        }
        .footer-main .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-white);
            opacity: 0.75;
            margin-bottom: 16px;
            max-width: 360px;
        }
        .footer-main .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-main .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-white);
            font-size: 16px;
            transition: background var(--transition), color var(--transition);
            text-decoration: none;
        }
        .footer-main .footer-social a:hover {
            background: var(--primary);
            color: #fff;
        }
        .footer-main h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            opacity: 0.9;
        }
        .footer-main ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-main ul li {
            margin-bottom: 10px;
        }
        .footer-main ul li a {
            color: var(--text-white);
            opacity: 0.7;
            font-size: 14px;
            text-decoration: none;
            transition: opacity var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-main ul li a:hover {
            opacity: 1;
            color: var(--primary);
        }
        .footer-main .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-white);
            opacity: 0.6;
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-main .footer-bottom a {
            color: var(--text-white);
            opacity: 0.7;
            text-decoration: none;
        }
        .footer-main .footer-bottom a:hover {
            opacity: 1;
            color: var(--primary);
        }
        /* ===== Section Spacing ===== */
        .section-padding {
            padding: 80px 0;
        }
        .section-padding-sm {
            padding: 60px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 40px 0;
            }
            .section-padding-sm {
                padding: 32px 0;
            }
        }
        /* ===== Breadcrumb ===== */
        .breadcrumb-custom {
            font-size: 13px;
            color: var(--text-light);
            padding: 16px 0 4px;
        }
        .breadcrumb-custom a {
            color: var(--text-light);
        }
        .breadcrumb-custom a:hover {
            color: var(--primary);
        }
        .breadcrumb-custom .sep {
            margin: 0 8px;
            color: var(--text-light);
        }
        /* ===== Hero Banner (内页) ===== */
        .page-hero {
            background: linear-gradient(135deg, #1A2A3A 0%, #2A4055 100%);
            padding: 60px 0;
            position: relative;
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.2;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .page-hero h1 {
            color: #fff;
            font-size: 42px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .page-hero p {
            color: var(--text-white);
            opacity: 0.85;
            font-size: 18px;
            max-width: 640px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 40px 0;
                min-height: 200px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .page-hero p {
                font-size: 15px;
            }
        }
        /* ===== 特色区块 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .feature-item {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .feature-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .feature-item .icon {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .feature-item h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .feature-item p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .feature-item .badge-custom {
            margin-top: 12px;
        }
        @media (max-width: 768px) {
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .feature-item {
                padding: 24px 20px;
            }
        }
        /* ===== 图文混排 ===== */
        .media-block {
            display: flex;
            align-items: center;
            gap: 48px;
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            overflow: hidden;
        }
        .media-block.reverse {
            flex-direction: row-reverse;
        }
        .media-block .media-img {
            flex: 0 0 45%;
            min-height: 280px;
            background: var(--primary-light);
        }
        .media-block .media-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        .media-block .media-text {
            flex: 1;
            padding: 40px 40px 40px 0;
        }
        .media-block.reverse .media-text {
            padding: 40px 0 40px 40px;
        }
        .media-block .media-text h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-dark);
        }
        .media-block .media-text p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            margin-bottom: 16px;
        }
        .media-block .media-text ul {
            list-style: none;
            padding: 0;
            margin: 0 0 16px;
        }
        .media-block .media-text ul li {
            padding: 4px 0 4px 24px;
            position: relative;
            font-size: 15px;
            color: var(--text-body);
        }
        .media-block .media-text ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 700;
        }
        @media (max-width: 992px) {
            .media-block {
                flex-direction: column !important;
                gap: 0;
            }
            .media-block .media-img {
                flex: unset;
                width: 100%;
                min-height: 200px;
                max-height: 260px;
            }
            .media-block .media-text {
                padding: 24px 20px !important;
            }
            .media-block .media-text h3 {
                font-size: 22px;
            }
        }
        /* ===== 流程步骤 ===== */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 28px 20px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            text-align: center;
            position: relative;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .step-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .step-card .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .step-card h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-dark);
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 0;
        }
        @media (max-width: 992px) {
            .steps-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .steps-row {
                grid-template-columns: 1fr;
            }
        }
        /* ===== FAQ (手风琴) ===== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card) !important;
            overflow: hidden;
            margin-bottom: 12px;
            background: var(--card-bg);
            box-shadow: none;
        }
        .faq-accordion .accordion-button {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            background: var(--card-bg);
            padding: 18px 24px;
            box-shadow: none;
            border: none;
            transition: color var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--card-bg);
        }
        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%233B8FCC'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
            transition: transform var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(-180deg);
        }
        .faq-accordion .accordion-body {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
        }
        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, #2E73A8 100%);
            border-radius: var(--radius-card);
            padding: 56px 48px;
            text-align: center;
            color: #fff;
        }
        .cta-block h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 17px;
            opacity: 0.9;
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-block .cta-form {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
            max-width: 520px;
            margin: 0 auto;
        }
        .cta-block .cta-form input[type="email"] {
            flex: 1;
            min-width: 200px;
            padding: 12px 20px;
            border-radius: var(--radius-input);
            border: none;
            outline: none;
            font-size: 15px;
            background: #fff;
            color: var(--text-body);
        }
        .cta-block .cta-form input[type="email"]:focus {
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
        }
        .cta-block .cta-form input[type="email"]::placeholder {
            color: var(--text-light);
        }
        .cta-block .cta-form .btn-accent {
            padding: 12px 32px;
            font-size: 16px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-btn);
            background: var(--accent);
            color: #fff;
            cursor: pointer;
            transition: filter var(--transition), transform var(--transition);
        }
        .cta-block .cta-form .btn-accent:hover {
            filter: brightness(1.1);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .cta-block {
                padding: 36px 24px;
            }
            .cta-block h2 {
                font-size: 24px;
            }
            .cta-block .cta-form {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-block .cta-form input[type="email"] {
                min-width: unset;
            }
        }
        /* ===== 适用场景 ===== */
        .scene-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 24px;
        }
        .scene-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .scene-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .scene-card .scene-icon {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .scene-card h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-dark);
        }
        .scene-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 0;
        }
        @media (max-width: 992px) {
            .scene-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 576px) {
            .scene-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ===== 统计数据 ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 42px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 15px;
            color: var(--text-light);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .stat-item .stat-number {
                font-size: 32px;
            }
        }
        @media (max-width: 576px) {
            .stats-row {
                grid-template-columns: 1fr;
            }
        }
        /* ===== 空态 ===== */
        .empty-state {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px dashed var(--border-color);
            min-height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            font-size: 16px;
        }
        /* ===== 响应式导航 ===== */
        @media (max-width: 768px) {
            .navbar-main .nav-links {
                display: none;
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                padding: 16px 20px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                border-radius: 0 0 var(--radius-card) var(--radius-card);
                gap: 12px;
                z-index: 1050;
            }
            .navbar-main .nav-links.open {
                display: flex;
            }
            .navbar-main .nav-links a {
                font-size: 16px;
                padding: 8px 0;
            }
            .navbar-main .nav-links a::after {
                display: none;
            }
            .navbar-main .nav-links a.active {
                color: var(--primary);
            }
            .navbar-main .nav-toggle {
                display: block;
            }
            .navbar-main .nav-cta span {
                display: none;
            }
            .navbar-main .nav-cta i {
                margin-right: 0;
            }
            .footer-main .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-main .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 576px) {
            h1 {
                font-size: 32px !important;
            }
            h2 {
                font-size: 26px !important;
            }
            h3 {
                font-size: 20px !important;
            }
            .card-custom .card-body {
                padding: 16px;
            }
            .feature-item {
                padding: 20px 16px;
            }
            .step-card {
                padding: 20px 16px;
            }
            .scene-card {
                padding: 20px 16px;
            }
        }
        /* ===== 额外辅助 ===== */
        .section-title {
            margin-bottom: 40px;
        }
        .section-title h2 {
            margin-bottom: 8px;
        }
        .section-title p {
            font-size: 17px;
            color: var(--text-light);
            max-width: 600px;
        }
        .text-primary-custom {
            color: var(--primary);
        }
        .bg-primary-light {
            background-color: var(--primary-light);
        }
        .rounded-card {
            border-radius: var(--radius-card);
        }
        .shadow-custom {
            box-shadow: var(--shadow-card);
        }
        /* ===== 特色亮点标签行 ===== */
        .highlight-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 12px;
        }
        .highlight-tags .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            padding: 4px 16px;
            border-radius: 20px;
            font-weight: 500;
            border: 1px solid rgba(59, 143, 204, 0.15);
        }
        /* ===== 页面锚点平滑 ===== */
        .smooth-link {
            scroll-behavior: smooth;
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #3B8FCC;
            --primary-dark: #2E72A3;
            --primary-light: rgba(59, 143, 204, 0.10);
            --secondary: #FF7A45;
            --secondary-dark: #E5622E;
            --bg: #F5F8FC;
            --bg-dark: #1A2A3A;
            --text: #3D4F60;
            --text-light: #8A9BAE;
            --text-white: rgba(255, 255, 255, 0.85);
            --card-bg: #FFFFFF;
            --border: rgba(59, 143, 204, 0.10);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow: 0 4px 20px rgba(59, 143, 204, 0.08);
            --shadow-hover: 0 8px 32px rgba(59, 143, 204, 0.15);
            --transition: 0.3s ease;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --nav-height: 56px;
            --max-width: 1200px;
        }

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

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            -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-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

        button,
        input,
        textarea {
            font-family: var(--font-stack);
            border: none;
            outline: none;
        }
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--bg-dark);
            margin-bottom: 0.5rem;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Typography ===== */
        .heading-xl {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
        }
        .heading-lg {
            font-size: 34px;
            font-weight: 700;
        }
        .heading-md {
            font-size: 24px;
            font-weight: 600;
        }
        .heading-sm {
            font-size: 18px;
            font-weight: 600;
        }
        .body-text {
            font-size: 16px;
            line-height: 1.8;
        }
        .text-small {
            font-size: 13px;
            color: var(--text-light);
        }
        .text-highlight {
            color: var(--primary);
        }
        .text-secondary {
            color: var(--secondary);
        }

        /* ===== Buttons ===== */
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            min-height: 44px;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            border-radius: var(--radius-sm);
            transition: filter var(--transition), transform var(--transition), box-shadow var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-primary-custom:hover {
            filter: brightness(1.1);
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
            color: #fff;
        }
        .btn-primary-custom:active {
            filter: brightness(0.95);
            transform: translateY(0);
        }

        .btn-secondary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            min-height: 44px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            background: transparent;
            border: 2px solid var(--primary);
            border-radius: var(--radius-sm);
            transition: background var(--transition), color var(--transition), transform var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .btn-secondary-custom:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-secondary-custom:active {
            transform: translateY(0);
        }

        .btn-cta-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 36px;
            min-height: 48px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            background: var(--secondary);
            border-radius: var(--radius-sm);
            transition: filter var(--transition), transform var(--transition), box-shadow var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-cta-custom:hover {
            filter: brightness(1.1);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 122, 69, 0.25);
            color: #fff;
        }
        .btn-cta-custom:active {
            filter: brightness(0.95);
            transform: translateY(0);
        }

        /* ===== Badge / Tag ===== */
        .badge-custom {
            display: inline-block;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 20px;
            border: 1px solid var(--border);
        }
        .badge-custom.alt {
            color: var(--secondary);
            background: rgba(255, 122, 69, 0.08);
            border-color: rgba(255, 122, 69, 0.15);
        }
        .badge-custom.dark {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.15);
        }

        /* ===== Section Spacing ===== */
        .section-padding {
            padding: 100px 0;
        }
        .section-padding-sm {
            padding: 60px 0;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 50px 0;
            }
            .section-padding-sm {
                padding: 30px 0;
            }
            .heading-xl {
                font-size: 32px;
            }
            .heading-lg {
                font-size: 26px;
            }
            .heading-md {
                font-size: 20px;
            }
            .container {
                padding: 0 16px;
            }
        }
        @media (max-width: 576px) {
            .heading-xl {
                font-size: 28px;
            }
            .heading-lg {
                font-size: 22px;
            }
            .heading-md {
                font-size: 18px;
            }
            .section-padding {
                padding: 40px 0;
            }
            .section-padding-sm {
                padding: 20px 0;
            }
            .container {
                padding: 0 12px;
            }
        }

        /* ===== Navigation ===== */
        .navbar-main {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--nav-height);
            background: var(--card-bg);
            box-shadow: 0 2px 20px rgba(59, 143, 204, 0.06);
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--max-width);
            width: 100%;
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }

        .nav-left {
            display: flex;
            align-items: center;
            gap: 32px;
            flex: 1;
        }

        .nav-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--bg-dark);
            text-decoration: none;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .nav-logo .logo-highlight {
            color: var(--primary);
        }
        .nav-logo:hover {
            color: var(--bg-dark);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .nav-links a {
            position: relative;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            text-decoration: none;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: filter var(--transition), transform var(--transition);
        }
        .nav-cta:hover {
            filter: brightness(1.1);
            transform: translateY(-1px);
            color: #fff;
        }
        .nav-cta i {
            font-size: 14px;
        }

        .nav-search {
            font-size: 18px;
            color: var(--text-light);
            cursor: pointer;
            transition: color var(--transition);
        }
        .nav-search:hover {
            color: var(--primary);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--bg-dark);
            cursor: pointer;
            padding: 4px;
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                gap: 0;
                padding: 12px 0;
                box-shadow: 0 8px 24px rgba(59, 143, 204, 0.1);
                border-bottom: 1px solid var(--border);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 24px;
                font-size: 15px;
                width: 100%;
                border-bottom: 1px solid var(--border);
            }
            .nav-links a:last-child {
                border-bottom: none;
            }
            .nav-links a::after {
                display: none;
            }
            .nav-links a.active {
                background: var(--primary-light);
            }
            .nav-toggle {
                display: block;
            }
            .nav-cta span {
                display: none;
            }
            .nav-left {
                gap: 16px;
            }
            .nav-inner {
                padding: 0 16px;
            }
        }

        @media (max-width: 576px) {
            .nav-logo {
                font-size: 18px;
            }
            .nav-cta {
                padding: 6px 12px;
                font-size: 13px;
            }
        }

        /* ===== Hero Banner (Category) ===== */
        .hero-category {
            margin-top: var(--nav-height);
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-category-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 30%;
            opacity: 0.35;
            z-index: 0;
        }
        .hero-category-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 42, 58, 0.85) 40%, rgba(59, 143, 204, 0.40) 100%);
            z-index: 1;
        }
        .hero-category .container {
            position: relative;
            z-index: 2;
            padding-top: 20px;
            padding-bottom: 20px;
        }
        .hero-category .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 16px;
        }
        .hero-category .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .hero-category .breadcrumb-custom a:hover {
            color: #fff;
        }
        .hero-category .breadcrumb-custom span {
            color: rgba(255, 255, 255, 0.5);
        }
        .hero-category .breadcrumb-custom .sep {
            color: rgba(255, 255, 255, 0.3);
        }

        .hero-category h1 {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .hero-category .hero-sub {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .hero-category {
                min-height: 280px;
            }
            .hero-category h1 {
                font-size: 30px;
            }
            .hero-category .hero-sub {
                font-size: 16px;
            }
        }
        @media (max-width: 576px) {
            .hero-category h1 {
                font-size: 24px;
            }
            .hero-category .hero-sub {
                font-size: 14px;
            }
        }

        /* ===== Breadcrumb (inner) ===== */
        .breadcrumb-inner {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .breadcrumb-inner a {
            color: var(--primary);
        }
        .breadcrumb-inner a:hover {
            color: var(--primary-dark);
        }
        .breadcrumb-inner .sep {
            color: var(--text-light);
        }
        .breadcrumb-inner .current {
            color: var(--text);
            font-weight: 500;
        }

        /* ===== Card ===== */
        .card-custom {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: transform var(--transition), box-shadow var(--transition);
            overflow: hidden;
            height: 100%;
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .card-custom .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: var(--radius) var(--radius) 0 0;
            transition: transform 0.4s ease;
        }
        .card-custom:hover .card-img {
            transform: scale(1.02);
        }
        .card-custom .card-body {
            padding: 20px 24px 24px;
        }
        .card-custom .card-tag {
            margin-bottom: 8px;
        }
        .card-custom .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--bg-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-custom .card-desc {
            font-size: 14px;
            color: var(--text);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-custom .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition);
        }
        .card-custom .card-link:hover {
            gap: 8px;
        }

        @media (max-width: 576px) {
            .card-custom .card-body {
                padding: 16px 18px 20px;
            }
            .card-custom .card-title {
                font-size: 16px;
            }
        }

        /* ===== Feature Grid 2-1-2 ===== */
        .grid-212 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .grid-212 .feature-card-large {
            grid-column: 1 / -1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            align-items: center;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 0;
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .grid-212 .feature-card-large:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .grid-212 .feature-card-large .large-img {
            width: 100%;
            height: 100%;
            min-height: 240px;
            object-fit: cover;
            border-radius: 0;
        }
        .grid-212 .feature-card-large .large-body {
            padding: 32px 36px;
        }
        .grid-212 .feature-card-large .large-body h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--bg-dark);
        }
        .grid-212 .feature-card-large .large-body p {
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
        }

        @media (max-width: 992px) {
            .grid-212 .feature-card-large {
                grid-template-columns: 1fr;
            }
            .grid-212 .feature-card-large .large-img {
                min-height: 200px;
                max-height: 260px;
            }
            .grid-212 .feature-card-large .large-body {
                padding: 24px 28px;
            }
        }
        @media (max-width: 768px) {
            .grid-212 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .grid-212 .feature-card-large .large-body {
                padding: 20px 24px;
            }
            .grid-212 .feature-card-large .large-body h3 {
                font-size: 18px;
            }
        }

        /* ===== Timeline ===== */
        .timeline {
            position: relative;
            padding-left: 36px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: var(--border);
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 32px;
            padding-left: 20px;
        }
        .timeline-item:last-child {
            margin-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid var(--card-bg);
            box-shadow: 0 0 0 3px var(--primary-light);
        }
        .timeline-item .tl-version {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            padding: 2px 12px;
            border-radius: 20px;
            margin-bottom: 4px;
        }
        .timeline-item .tl-date {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 4px;
        }
        .timeline-item .tl-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--bg-dark);
            margin-bottom: 4px;
        }
        .timeline-item .tl-desc {
            font-size: 14px;
            color: var(--text);
            line-height: 1.6;
        }

        @media (max-width: 576px) {
            .timeline {
                padding-left: 28px;
            }
            .timeline-item {
                padding-left: 12px;
            }
            .timeline-item::before {
                left: -20px;
                width: 10px;
                height: 10px;
            }
            .timeline-item .tl-title {
                font-size: 16px;
            }
        }

        /* ===== FAQ Accordion ===== */
        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border);
            background: transparent;
        }
        .accordion-custom .accordion-item:first-child {
            border-top: 1px solid var(--border);
        }
        .accordion-custom .accordion-button {
            padding: 20px 0;
            font-size: 17px;
            font-weight: 600;
            color: var(--bg-dark);
            background: transparent;
            box-shadow: none;
            border: none;
            transition: color var(--transition);
        }
        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 18px;
            color: var(--primary);
            transform: rotate(0deg);
            transition: transform var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: transparent;
        }
        .accordion-custom .accordion-button:hover {
            color: var(--primary);
        }
        .accordion-custom .accordion-button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
        }
        .accordion-custom .accordion-body {
            padding: 0 0 20px 0;
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(59, 143, 204, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 34px;
            font-weight: 700;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 17px;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-section .cta-form {
            display: flex;
            gap: 12px;
            max-width: 520px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-section .cta-form input[type="email"] {
            flex: 1;
            min-width: 220px;
            padding: 12px 20px;
            font-size: 15px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.10);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #fff;
            transition: border var(--transition), background var(--transition);
        }
        .cta-section .cta-form input[type="email"]::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .cta-section .cta-form input[type="email"]:focus {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.15);
            outline: none;
        }

        @media (max-width: 576px) {
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 15px;
            }
            .cta-section .cta-form {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-section .cta-form input[type="email"] {
                min-width: unset;
            }
        }

        /* ===== Footer ===== */
        .footer-main {
            background: var(--bg-dark);
            color: var(--text-white);
            padding: 60px 0 0 0;
        }
        .footer-main .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-main .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            text-decoration: none;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-main .footer-logo .logo-highlight {
            color: var(--primary);
        }
        .footer-main .footer-logo:hover {
            color: #fff;
        }
        .footer-main .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 360px;
        }
        .footer-main .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-main .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 18px;
            transition: background var(--transition), color var(--transition), transform var(--transition);
            text-decoration: none;
        }
        .footer-main .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-main h5 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-main ul li {
            margin-bottom: 10px;
        }
        .footer-main ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-main ul li a:hover {
            color: var(--primary);
        }
        .footer-main ul li a i {
            font-size: 14px;
            width: 18px;
            text-align: center;
        }
        .footer-main .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-main .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition);
        }
        .footer-main .footer-bottom a:hover {
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .footer-main .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-main .footer-col:first-child {
                grid-column: 1 / -1;
            }
            .footer-main .footer-desc {
                max-width: 100%;
            }
        }
        @media (max-width: 576px) {
            .footer-main .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-main .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-main {
                padding-top: 40px;
            }
        }

        /* ===== Misc ===== */
        .section-title-center {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title-center h2 {
            margin-bottom: 12px;
        }
        .section-title-center p {
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            font-size: 16px;
        }

        .section-title-left {
            margin-bottom: 36px;
        }
        .section-title-left h2 {
            margin-bottom: 8px;
        }
        .section-title-left p {
            color: var(--text-light);
            font-size: 16px;
        }

        .bg-white {
            background: var(--card-bg);
        }
        .bg-subtle {
            background: var(--bg);
        }

        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .gap-16 {
            gap: 16px;
        }
        .gap-24 {
            gap: 24px;
        }

        .text-center-mobile {
            text-align: center;
        }
        @media (max-width: 768px) {
            .text-center-mobile {
                text-align: center;
            }
            .text-start-mobile {
                text-align: left;
            }
        }

        .fade-in {
            animation: fadeInUp 0.6s ease forwards;
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== Version Highlight Strip ===== */
        .version-strip {
            background: var(--primary);
            color: #fff;
            padding: 14px 0;
            text-align: center;
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.3px;
        }
        .version-strip span {
            background: rgba(255, 255, 255, 0.15);
            padding: 2px 12px;
            border-radius: 20px;
            font-weight: 700;
            margin: 0 4px;
        }
        @media (max-width: 576px) {
            .version-strip {
                font-size: 13px;
                padding: 10px 12px;
            }
        }

        /* ===== Image with text overlay (info block) ===== */
        .info-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .info-block.reverse {
            direction: rtl;
        }
        .info-block.reverse>* {
            direction: ltr;
        }
        .info-block .info-img {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .info-block .info-img img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .info-block .info-img:hover img {
            transform: scale(1.02);
        }
        .info-block .info-text h3 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--bg-dark);
        }
        .info-block .info-text p {
            font-size: 16px;
            color: var(--text);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .info-block .info-text .info-list {
            margin-top: 12px;
        }
        .info-block .info-text .info-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text);
            margin-bottom: 10px;
        }
        .info-block .info-text .info-list li i {
            color: var(--primary);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        @media (max-width: 992px) {
            .info-block {
                gap: 32px;
            }
            .info-block .info-text h3 {
                font-size: 24px;
            }
            .info-block .info-img img {
                height: 300px;
            }
        }
        @media (max-width: 768px) {
            .info-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .info-block.reverse {
                direction: ltr;
            }
            .info-block .info-img img {
                height: 240px;
            }
            .info-block .info-text h3 {
                font-size: 22px;
            }
        }
        @media (max-width: 576px) {
            .info-block .info-img img {
                height: 200px;
            }
            .info-block .info-text h3 {
                font-size: 20px;
            }
        }

        /* ===== Number Stat ===== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 42px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-item .stat-label {
            font-size: 14px;
            color: var(--text-light);
        }
        @media (max-width: 768px) {
            .stat-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
            .stat-item .stat-number {
                font-size: 32px;
            }
        }
        @media (max-width: 576px) {
            .stat-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 28px;
            }
        }

        /* ===== Responsive extras ===== */
        @media (max-width: 576px) {
            .hero-category .breadcrumb-custom {
                font-size: 12px;
                flex-wrap: wrap;
            }
            .badge-custom {
                font-size: 12px;
                padding: 2px 10px;
            }
        }