/* roulang page: index */
:root {
            --color-primary: #2C5282;
            --color-primary-dark: #1E3A5F;
            --color-lilac: #A78BFA;
            --color-lilac-light: #C4A7E7;
            --color-lilac-deep: #8B5CF6;
            --color-lilac-bg: rgba(167, 139, 250, 0.12);
            --color-bg: #F4F7FA;
            --color-surface: #FFFFFF;
            --color-text: #1F2937;
            --color-text-secondary: #4B5563;
            --color-text-muted: #6B7280;
            --color-nav-bg: #1F2A3D;
            --color-nav-bg-dark: #16202E;
            --color-nav-text: #DCE3EC;
            --color-nav-hover: #FFFFFF;
            --color-border: rgba(30, 58, 95, 0.12);
            --color-border-lilac: rgba(167, 139, 250, 0.3);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --shadow-card: 0 2px 8px rgba(30, 58, 95, 0.08);
            --shadow-card-hover: 0 8px 24px rgba(30, 58, 95, 0.14);
            --shadow-btn: 0 2px 6px rgba(139, 92, 246, 0.25);
            --transition: 0.25s ease;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Source Han Sans SC', sans-serif;
            --container-max: 1180px;
            --section-padding: 72px 0;
            --section-padding-mobile: 44px 0;
        }

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

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

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

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

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

        a:hover {
            color: var(--color-lilac-deep);
        }

        button, input, textarea {
            font-family: var(--font-family);
            font-size: 15px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: var(--section-padding);
            position: relative;
        }

        .section-alt {
            background-color: #EDF1F6;
        }

        .section-white {
            background-color: #FFFFFF;
        }

        .section-title-wrap {
            max-width: 720px;
            margin-bottom: 36px;
        }

        .section-tag {
            display: inline-block;
            background: var(--color-lilac-bg);
            color: var(--color-lilac-deep);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--color-text);
            margin-bottom: 10px;
            position: relative;
            padding-left: 16px;
        }

        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            background: linear-gradient(180deg, var(--color-lilac), var(--color-lilac-deep));
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-top: 6px;
            max-width: 680px;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            background-color: var(--color-nav-bg);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.12);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .header-logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-nav-hover);
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

        .header-logo a:hover {
            color: var(--color-lilac-light);
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-lilac), var(--color-lilac-deep));
            border-radius: 8px;
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            margin-left: auto;
            margin-right: 20px;
        }

        .header-nav a {
            color: var(--color-nav-text);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
        }

        .header-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background-color: var(--color-lilac);
            border-radius: 2px;
            transition: width var(--transition);
        }

        .header-nav a:hover,
        .header-nav a.active {
            color: var(--color-nav-hover);
        }

        .header-nav a:hover::after,
        .header-nav a.active::after {
            width: 100%;
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.02em;
            border-radius: var(--radius-btn, 8px);
            padding: 10px 20px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            -webkit-tap-highlight-color: transparent;
        }

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

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

        .btn-primary:hover {
            background-color: var(--color-lilac-deep);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(139, 92, 246, 0.35);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 4px rgba(139, 92, 246, 0.25);
        }

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

        .btn-outline:hover {
            background-color: var(--color-lilac-bg);
            color: var(--color-lilac-deep);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-light {
            background-color: #FFFFFF;
            color: var(--color-primary-dark);
        }

        .btn-light:hover {
            background-color: var(--color-lilac-light);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 14px 28px;
            font-size: 15px;
            border-radius: 10px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            background: transparent;
            border: 1px solid var(--color-lilac);
            border-radius: 8px;
            cursor: pointer;
            transition: background-color var(--transition);
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background-color: var(--color-nav-hover);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .nav-toggle:hover {
            background-color: rgba(167, 139, 250, 0.15);
        }

        .mobile-nav {
            display: none;
            background-color: var(--color-nav-bg);
            border-top: 1px solid rgba(167, 139, 250, 0.2);
            padding: 20px 24px;
            flex-direction: column;
            gap: 14px;
        }

        .mobile-nav a {
            color: var(--color-nav-text);
            font-size: 16px;
            font-weight: 500;
            padding: 10px 0;
            border-bottom: 1px solid rgba(220, 227, 236, 0.08);
            transition: color var(--transition);
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--color-lilac-light);
        }

        .mobile-nav .btn {
            margin-top: 8px;
            width: 100%;
        }

        /* ===== Hero - Brand Flagship ===== */
        .hero {
            position: relative;
            overflow: hidden;
            background-color: var(--color-nav-bg-dark);
            min-height: 580px;
            display: flex;
            align-items: center;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/b5e0d514247e1a1d.webp');
            background-size: cover;
            background-position: center;
            z-index: 1;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(22, 32, 46, 0.72) 0%, rgba(22, 32, 46, 0.86) 100%);
            z-index: 2;
        }

        .hero-content {
            position: relative;
            z-index: 3;
            width: 100%;
            color: #FFFFFF;
            padding: 60px 0 42px;
        }

        .hero-title {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
            max-width: 700px;
        }

        .hero-title .highlight {
            color: var(--color-lilac-light);
        }

        .hero-desc {
            font-size: 16px;
            line-height: 2;
            color: rgba(255, 255, 255, 0.88);
            max-width: 680px;
            margin-bottom: 28px;
        }

        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 32px;
        }

        .hero-series-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 22px;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            max-width: 760px;
        }

        .hero-series-nav .series-label {
            width: 100%;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-lilac-light);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 4px;
        }

        .hero-series-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 20px;
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition);
            cursor: pointer;
        }

        .hero-series-link:hover {
            background: rgba(167, 139, 250, 0.25);
            border-color: var(--color-lilac);
            color: var(--color-lilac-light);
            transform: translateY(-2px);
        }

        .hero-trust-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
        }

        .hero-trust-strip span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .hero-trust-strip i {
            color: var(--color-lilac-light);
        }

        /* ===== Cards & Grids ===== */
        .grid {
            display: grid;
            gap: 24px;
        }

        .grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }

        .grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            padding: 26px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: var(--color-lilac-bg);
            border-radius: 12px;
            color: var(--color-lilac-deep);
            font-size: 20px;
            margin-bottom: 16px;
        }

        .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .card-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        .card-badge {
            display: inline-block;
            background: var(--color-lilac-bg);
            color: var(--color-lilac-deep);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        /* ===== Highlight Cards ===== */
        .highlight-card {
            text-align: left;
            padding: 28px 24px;
        }

        .highlight-card .card-icon {
            background: linear-gradient(135deg, var(--color-lilac-bg), rgba(167, 139, 250, 0.25));
            color: var(--color-lilac-deep);
        }

        /* ===== Pain Points ===== */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .pain-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            padding: 30px 26px;
            position: relative;
            border-top: 3px solid #E23C57;
            transition: all var(--transition);
        }

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

        .pain-card .pain-label {
            display: inline-block;
            background: rgba(226, 60, 87, 0.1);
            color: #E23C57;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 4px;
            margin-bottom: 14px;
        }

        .pain-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .pain-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        /* ===== Solution Split Layout ===== */
        .solution-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .solution-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
            position: relative;
        }

        .solution-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .solution-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(167, 139, 250, 0.15), rgba(44, 82, 130, 0.08));
            pointer-events: none;
        }

        .solution-text h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 14px;
        }

        .solution-text p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .solution-points {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 8px;
        }

        .solution-points li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        .solution-points li i {
            color: var(--color-lilac-deep);
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ===== Topic Cards ===== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .topic-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #FFFFFF;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            cursor: pointer;
            display: block;
            color: var(--color-text);
        }

        .topic-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-6px);
            color: var(--color-text);
        }

        .topic-card .topic-img {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

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

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

        .topic-card .topic-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(22, 32, 46, 0.78);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 4px;
            z-index: 2;
        }

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

        .topic-card .topic-body h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .topic-card .topic-body p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.7;
        }

        .topic-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--color-lilac-deep);
            font-weight: 600;
            margin-top: 12px;
        }

        .topic-link:hover {
            color: var(--color-lilac);
        }

        /* ===== Steps ===== */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
            position: relative;
        }

        .steps-row::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 8%;
            right: 8%;
            height: 2px;
            border-top: 2px dashed rgba(167, 139, 250, 0.4);
            z-index: 0;
        }

        .step-item {
            position: relative;
            z-index: 1;
            background: #FFFFFF;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 26px 22px;
            text-align: center;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }

        .step-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-lilac);
            transform: translateY(-4px);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--color-lilac), var(--color-lilac-deep));
            color: #FFFFFF;
            font-size: 20px;
            font-weight: 700;
            border-radius: 50%;
            margin-bottom: 14px;
            box-shadow: var(--shadow-btn);
        }

        .step-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ===== Scenario Cards ===== */
        .scenario-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding-bottom: 14px;
            scroll-snap-type: x proximity;
            -webkit-overflow-scrolling: touch;
        }

        .scenario-scroll::-webkit-scrollbar {
            height: 6px;
        }

        .scenario-scroll::-webkit-scrollbar-track {
            background: rgba(30, 58, 95, 0.06);
            border-radius: 3px;
        }

        .scenario-scroll::-webkit-scrollbar-thumb {
            background: rgba(167, 139, 250, 0.45);
            border-radius: 3px;
        }

        .scenario-card {
            flex: 0 0 270px;
            scroll-snap-align: start;
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-lilac);
            transform: translateY(-4px);
        }

        .scenario-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }

        .scenario-card .scenario-body {
            padding: 16px 18px;
        }

        .scenario-card .scenario-body h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .scenario-card .scenario-body p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ===== Data Strip ===== */
        .data-strip {
            background: linear-gradient(135deg, var(--color-nav-bg) 0%, #1E3A5F 100%);
            border-radius: var(--radius-lg);
            padding: 44px 36px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
            overflow: hidden;
        }

        .data-strip::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-lilac), var(--color-lilac-light), var(--color-lilac-deep));
        }

        .data-item {
            text-align: center;
            color: #FFFFFF;
        }

        .data-item .data-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-lilac-light);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .data-item .data-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            letter-spacing: 0.02em;
        }

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

        .testimonial-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            padding: 28px 24px;
            display: flex;
            flex-direction: column;
            gap: 14px;
            transition: all var(--transition);
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-lilac);
            transform: translateY(-4px);
        }

        .testimonial-quote {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            flex: 1;
        }

        .testimonial-quote::before {
            content: '\201C';
            font-size: 32px;
            color: var(--color-lilac);
            line-height: 1;
            display: block;
            margin-bottom: 6px;
            font-weight: 700;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 14px;
            border-top: 1px solid var(--color-border);
        }

        .testimonial-avatar {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--color-lilac-light), var(--color-lilac));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }

        .testimonial-author-info {
            display: flex;
            flex-direction: column;
        }

        .testimonial-author-info .name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
        }

        .testimonial-author-info .role {
            font-size: 12px;
            color: var(--color-text-muted);
        }

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

        .audience-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition);
        }

        .audience-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-lilac);
            transform: translateY(-4px);
        }

        .audience-card .audience-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            background: var(--color-lilac-bg);
            border-radius: 50%;
            color: var(--color-lilac-deep);
            font-size: 22px;
            margin-bottom: 14px;
        }

        .audience-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .audience-card p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ===== News List (CMS) ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-item {
            display: flex;
            gap: 20px;
            align-items: center;
            background: #FFFFFF;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            padding: 16px 20px 16px 16px;
            transition: all var(--transition);
        }

        .news-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-lilac);
            transform: translateY(-3px);
        }

        .news-thumb {
            flex-shrink: 0;
            width: 110px;
            height: 76px;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }

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

        .news-item:hover .news-thumb img {
            transform: scale(1.04);
        }

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

        .news-body .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 6px;
        }

        .news-body .news-cat {
            background: var(--color-lilac-bg);
            color: var(--color-lilac-deep);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 4px;
        }

        .news-body .news-time {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .news-body h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
            line-height: 1.5;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
        }

        .news-body .news-excerpt {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .news-empty {
            text-align: center;
            padding: 40px 20px;
            font-size: 14px;
            color: var(--color-text-muted);
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }

        .news-empty i {
            font-size: 28px;
            color: var(--color-lilac-light);
            display: block;
            margin-bottom: 10px;
        }

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

        .metric-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            padding: 24px 20px;
            text-align: center;
            position: relative;
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-lilac), var(--color-lilac-deep));
            opacity: 0;
            transition: opacity var(--transition);
        }

        .metric-card:hover::before {
            opacity: 1;
        }

        .metric-card .metric-value {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
        }

        .metric-card .metric-label {
            font-size: 13px;
            color: var(--color-text-secondary);
        }

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

        .faq-item {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--color-border-lilac);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: transparent;
            border: none;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            transition: background-color var(--transition);
        }

        .faq-question:hover {
            background-color: rgba(167, 139, 250, 0.06);
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--color-lilac);
            outline-offset: -2px;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            color: var(--color-lilac-deep);
            font-size: 14px;
            transition: transform var(--transition);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.25s ease, padding 0.25s ease;
            padding: 0 24px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.9;
        }

        .faq-item.open .faq-answer {
            max-height: 260px;
            padding: 0 24px 22px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-nav-bg-dark) 0%, var(--color-nav-bg) 50%, #1E3A5F 100%);
            border-radius: var(--radius-lg);
            padding: 56px 44px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(167, 139, 250, 0.25) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            background: radial-gradient(circle, rgba(196, 167, 231, 0.2) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.9;
            position: relative;
            z-index: 1;
        }

        .cta-section .btn {
            position: relative;
            z-index: 1;
        }

        /* ===== Form Section ===== */
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .form-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            padding: 30px 28px;
        }

        .form-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 18px;
        }

        .form-group {
            margin-bottom: 16px;
        }

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

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            background: #F8FAFC;
            border: 1px solid rgba(30, 58, 95, 0.2);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--color-text);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--color-lilac);
            box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.15);
        }

        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }

        .contact-info-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
            padding: 24px 0;
        }

        .contact-info-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .contact-info-item .ci-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            background: var(--color-lilac-bg);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-lilac-deep);
            font-size: 16px;
        }

        .contact-info-item .ci-text h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 2px;
        }

        .contact-info-item .ci-text p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ===== Footer ===== */
        .site-footer {
            background-color: var(--color-nav-bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 28px;
            margin-top: 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 24px;
        }

        .footer-brand .logo-mark {
            margin-bottom: 12px;
        }

        .footer-brand h4 {
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 8px;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
        }

        .footer-links h5 {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }

        .mt-16 {
            margin-top: 16px;
        }

        .mt-24 {
            margin-top: 24px;
        }

        .mt-32 {
            margin-top: 32px;
        }

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

        .mb-0 {
            margin-bottom: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .header-nav {
                gap: 18px;
                margin-right: 10px;
            }
            .header-nav a {
                font-size: 14px;
            }
            .hero-title {
                font-size: 34px;
            }
            .topic-grid,
            .testimonial-grid,
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .steps-row::before {
                display: none;
            }
            .audience-grid,
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                padding: 36px 28px;
            }
            .solution-split {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .form-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-padding-mobile);
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-title {
                font-size: 22px;
                padding-left: 12px;
            }
            .section-title-wrap {
                margin-bottom: 24px;
            }
            .header-nav {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-nav {
                display: none;
            }
            .mobile-nav.open {
                display: flex;
            }
            .hero {
                min-height: 520px;
            }
            .hero-title {
                font-size: 28px;
                line-height: 1.35;
            }
            .hero-desc {
                font-size: 14px;
                line-height: 1.9;
            }
            .hero-series-nav {
                padding: 16px;
                gap: 8px;
            }
            .hero-series-link {
                font-size: 13px;
                padding: 6px 12px;
            }
            .hero-trust-strip {
                gap: 12px;
                font-size: 12px;
            }
            .grid-2,
            .grid-3,
            .grid-4,
            .topic-grid,
            .testimonial-grid,
            .pain-grid,
            .audience-grid,
            .metrics-grid,
            .steps-row {
                grid-template-columns: 1fr;
            }
            .data-strip {
                grid-template-columns: 1fr 1fr;
                padding: 28px 20px;
                gap: 20px;
            }
            .data-item .data-number {
                font-size: 28px;
            }
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 16px;
            }
            .news-thumb {
                width: 100%;
                height: 160px;
            }
            .solution-image img {
                height: 240px;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .cta-section h2 {
                font-size: 22px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 24px;
            }
            .hero-desc {
                font-size: 13px;
            }
            .data-strip {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .section-title {
                font-size: 20px;
            }
            .btn-lg {
                padding: 12px 20px;
                font-size: 14px;
            }
            .hero-cta-row {
                flex-direction: column;
                gap: 10px;
            }
            .hero-cta-row .btn {
                width: 100%;
            }
            .hero-series-nav {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-trust-strip {
                flex-direction: column;
                gap: 6px;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .card {
                padding: 20px;
            }
            .testimonial-card {
                padding: 20px 18px;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #2C5282;
            --color-primary-dark: #1E3A5F;
            --color-lilac: #A78BFA;
            --color-lilac-light: #C4A7E7;
            --color-lilac-deep: #8B5CF6;
            --color-lilac-bg: rgba(167, 139, 250, 0.12);
            --color-bg: #F4F7FA;
            --color-surface: #FFFFFF;
            --color-text: #1F2937;
            --color-text-secondary: #4B5563;
            --color-text-muted: #6B7280;
            --color-nav-bg: #1F2A3D;
            --color-nav-bg-dark: #16202E;
            --color-nav-text: #DCE3EC;
            --color-nav-hover: #FFFFFF;
            --color-border: rgba(30, 58, 95, 0.12);
            --color-border-lilac: rgba(167, 139, 250, 0.3);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --shadow-card: 0 2px 8px rgba(30, 58, 95, 0.08);
            --shadow-card-hover: 0 8px 24px rgba(30, 58, 95, 0.14);
            --shadow-btn: 0 2px 6px rgba(139, 92, 246, 0.25);
            --transition: 0.25s ease;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Source Han Sans SC', sans-serif;
            --container-max: 1180px;
            --section-padding: 72px 0;
            --section-padding-mobile: 44px 0;
        }

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

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

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

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

        a:hover {
            color: var(--color-lilac-deep);
        }

        button, input, textarea {
            font-family: var(--font-family);
            font-size: 15px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: var(--section-padding);
            position: relative;
        }

        .section-alt {
            background-color: #EDF1F6;
        }

        .section-white {
            background-color: #FFFFFF;
        }

        .section-title-wrap {
            max-width: 720px;
            margin-bottom: 36px;
        }

        .section-tag {
            display: inline-block;
            background: var(--color-lilac-bg);
            color: var(--color-lilac-deep);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--color-text);
            margin-bottom: 10px;
            position: relative;
            padding-left: 16px;
        }

        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            background: linear-gradient(180deg, var(--color-lilac), var(--color-lilac-deep));
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-top: 6px;
            max-width: 680px;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            background-color: var(--color-nav-bg);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.12);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .header-logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-nav-hover);
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

        .header-logo a:hover {
            color: var(--color-lilac-light);
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-lilac), var(--color-lilac-deep));
            border-radius: 8px;
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            margin-left: auto;
            margin-right: 20px;
        }

        .header-nav a {
            color: var(--color-nav-text);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
        }

        .header-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background-color: var(--color-lilac);
            border-radius: 2px;
            transition: width var(--transition);
        }

        .header-nav a:hover {
            color: var(--color-nav-hover);
        }

        .header-nav a:hover::after {
            width: 100%;
        }

        .header-nav a.active {
            color: var(--color-lilac-light);
        }

        .header-nav a.active::after {
            width: 100%;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--color-lilac), var(--color-lilac-deep));
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.02em;
            transition: all var(--transition);
            white-space: nowrap;
            box-shadow: var(--shadow-btn);
        }

        .header-cta:hover {
            color: #fff;
            background: linear-gradient(135deg, var(--color-lilac-deep), #7C3AED);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(139, 92, 246, 0.35);
        }

        .header-cta i {
            font-size: 13px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            margin-left: auto;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--color-nav-text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-section {
            background-color: #EDF1F6;
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border);
        }

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

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

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

        .breadcrumb .separator {
            color: var(--color-lilac);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--color-lilac-deep);
            font-weight: 500;
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ===== Article Header ===== */
        .article-header-section {
            padding: 48px 0 28px;
            background-color: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
        }

        .article-header-section .container {
            max-width: 860px;
        }

        .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-lilac-bg);
            color: var(--color-lilac-deep);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
        }

        .article-category-tag i {
            font-size: 11px;
        }

        .article-header-section h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-text);
            margin-bottom: 14px;
            letter-spacing: 0.005em;
        }

        .article-header-section .article-summary {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin-bottom: 8px;
            max-width: 720px;
        }

        /* ===== Article Meta ===== */
        .article-meta-section {
            padding: 0 0 24px;
            background-color: var(--color-surface);
        }

        .article-meta-section .container {
            max-width: 860px;
        }

        .article-meta-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            padding: 16px 20px;
            background-color: #F8FAFC;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
        }

        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 7px;
            font-size: 14px;
            color: var(--color-text-muted);
        }

        .article-meta-item i {
            color: var(--color-lilac);
            font-size: 13px;
        }

        .article-meta-item strong {
            color: var(--color-text-secondary);
            font-weight: 600;
        }

        /* ===== Article Body ===== */
        .article-body-section {
            padding: 40px 0 56px;
            background-color: var(--color-surface);
        }

        .article-body-section .container {
            max-width: 860px;
        }

        .article-body {
            font-size: 16px;
            line-height: 2.0;
            color: var(--color-text);
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--color-text);
            margin: 36px 0 16px;
            padding-left: 14px;
            border-left: 4px solid var(--color-lilac);
        }

        .article-body h3 {
            font-size: 19px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--color-text);
            margin: 28px 0 12px;
        }

        .article-body p {
            margin-bottom: 18px;
            color: var(--color-text);
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 20px 24px;
            padding-left: 16px;
        }

        .article-body ul li,
        .article-body ol li {
            margin-bottom: 10px;
            color: var(--color-text-secondary);
            line-height: 1.9;
        }

        .article-body blockquote {
            margin: 24px 0;
            padding: 20px 24px;
            background: #F8FAFC;
            border-left: 4px solid var(--color-lilac);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-card);
        }

        .article-body a {
            color: var(--color-lilac-deep);
            border-bottom: 1px solid var(--color-border-lilac);
            transition: all var(--transition);
        }

        .article-body a:hover {
            color: #7C3AED;
            border-bottom-color: #7C3AED;
        }

        .article-not-found {
            text-align: center;
            padding: 60px 20px;
            background-color: #F8FAFC;
            border-radius: var(--radius-lg);
            border: 1px dashed var(--color-border);
        }

        .article-not-found i {
            font-size: 40px;
            color: var(--color-lilac-light);
            margin-bottom: 16px;
        }

        .article-not-found p {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin-bottom: 20px;
        }

        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .article-not-found .btn-back:hover {
            background: var(--color-primary-dark);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 56px 0;
            background-color: var(--color-bg);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

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

        .related-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-lilac);
            transform: translateY(-4px);
        }

        .related-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
        }

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

        .related-card:hover .related-card-img img {
            transform: scale(1.05);
        }

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

        .related-card-body .badge-tag {
            display: inline-block;
            background: var(--color-lilac-bg);
            color: var(--color-lilac-deep);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .related-card-body h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.55;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .related-card-body h3 a {
            color: var(--color-text);
            transition: color var(--transition);
        }

        .related-card-body h3 a:hover {
            color: var(--color-lilac-deep);
        }

        .related-card-body .related-date {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: auto;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .related-card-body .related-date i {
            color: var(--color-lilac);
            font-size: 12px;
        }

        /* ===== Topic Recommend ===== */
        .topic-recommend-section {
            padding: 56px 0;
            background-color: var(--color-surface);
        }

        .topic-recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 28px;
        }

        .topic-recommend-card {
            display: flex;
            align-items: center;
            gap: 14px;
            background: #F8FAFC;
            border-radius: var(--radius-md);
            padding: 16px 18px;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }

        .topic-recommend-card:hover {
            border-color: var(--color-border-lilac);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .topic-recommend-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: var(--color-lilac-bg);
            color: var(--color-lilac-deep);
            border-radius: var(--radius-sm);
            font-size: 18px;
            flex-shrink: 0;
        }

        .topic-recommend-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 2px;
            line-height: 1.4;
        }

        .topic-recommend-info p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* ===== Article CTA ===== */
        .article-cta-section {
            padding: 56px 0 72px;
            background-color: var(--color-bg);
        }

        .article-cta-box {
            background: linear-gradient(135deg, var(--color-primary-dark), #2C5282 60%, #3B5C8A);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
            box-shadow: 0 12px 32px rgba(30, 58, 95, 0.2);
            position: relative;
            overflow: hidden;
        }

        .article-cta-box::before {
            content: '';
            position: absolute;
            right: -40px;
            top: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(167, 139, 250, 0.15);
        }

        .article-cta-box::after {
            content: '';
            position: absolute;
            right: 60px;
            bottom: -60px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(167, 139, 250, 0.1);
        }

        .article-cta-text {
            position: relative;
            z-index: 1;
            max-width: 520px;
        }

        .article-cta-text h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .article-cta-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.78);
            margin: 0;
            line-height: 1.8;
        }

        .article-cta-actions {
            position: relative;
            z-index: 1;
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary-lilac {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--color-lilac), var(--color-lilac-deep));
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 26px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.02em;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            box-shadow: var(--shadow-btn);
        }

        .btn-primary-lilac:hover {
            color: #fff;
            background: linear-gradient(135deg, var(--color-lilac-deep), #7C3AED);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(139, 92, 246, 0.4);
        }

        .btn-outline-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 11px 24px;
            border-radius: var(--radius-sm);
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            letter-spacing: 0.02em;
            transition: all var(--transition);
        }

        .btn-outline-white:hover {
            color: #fff;
            border-color: var(--color-lilac-light);
            background: rgba(167, 139, 250, 0.18);
        }

        /* ===== Footer ===== */
        .site-footer {
            background-color: var(--color-nav-bg-dark);
            color: var(--color-nav-text);
            padding: 56px 0 28px;
        }

        .site-footer .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 44px;
            margin-bottom: 36px;
        }

        .footer-brand h4 {
            color: #fff;
            font-size: 19px;
            font-weight: 700;
            margin: 12px 0 10px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--color-nav-text);
            line-height: 1.85;
            margin: 0;
            max-width: 360px;
            opacity: 0.8;
        }

        .footer-links h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

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

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

        .footer-links ul li a {
            color: var(--color-nav-text);
            font-size: 14px;
            transition: color var(--transition);
            opacity: 0.8;
        }

        .footer-links ul li a:hover {
            color: var(--color-lilac-light);
            opacity: 1;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 22px;
            border-top: 1px solid rgba(220, 227, 236, 0.12);
            font-size: 13px;
            color: var(--color-nav-text);
            opacity: 0.7;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .related-grid,
            .topic-recommend-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .article-header-section h1 {
                font-size: 28px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-padding-mobile);
            }

            .site-header .container {
                height: 60px;
            }

            .header-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .header-nav {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background-color: var(--color-nav-bg-dark);
                flex-direction: column;
                gap: 0;
                padding: 12px 24px 20px;
                margin: 0;
                display: none;
                box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
                z-index: 99;
            }

            .header-nav.open {
                display: flex;
            }

            .header-nav a {
                padding: 12px 0;
                font-size: 16px;
                border-bottom: 1px solid rgba(220, 227, 236, 0.08);
            }

            .header-nav a::after {
                display: none;
            }

            .related-grid,
            .topic-recommend-grid {
                grid-template-columns: 1fr;
            }

            .article-header-section h1 {
                font-size: 24px;
                line-height: 1.45;
            }

            .article-header-section {
                padding: 32px 0 18px;
            }

            .article-body-section {
                padding: 28px 0 40px;
            }

            .article-body {
                font-size: 15px;
                line-height: 1.85;
            }

            .article-body h2 {
                font-size: 20px;
                margin: 28px 0 12px;
            }

            .article-body h3 {
                font-size: 17px;
                margin: 22px 0 10px;
            }

            .article-meta-bar {
                gap: 10px;
                padding: 12px 14px;
            }

            .article-cta-box {
                padding: 28px 22px;
                flex-direction: column;
                text-align: center;
            }

            .article-cta-text h3 {
                font-size: 20px;
            }

            .article-cta-actions {
                justify-content: center;
                width: 100%;
            }

            .btn-primary-lilac,
            .btn-outline-white {
                width: 100%;
                justify-content: center;
            }

            .site-footer .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .header-logo a {
                font-size: 17px;
            }

            .logo-mark {
                width: 28px;
                height: 28px;
                font-size: 12px;
            }

            .section-title {
                font-size: 22px;
            }

            .article-category-tag {
                font-size: 12px;
                padding: 3px 10px;
            }

            .article-meta-item {
                font-size: 12px;
            }

            .breadcrumb .current {
                max-width: 180px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #2C5282;
            --color-primary-dark: #1E3A5F;
            --color-lilac: #A78BFA;
            --color-lilac-light: #C4A7E7;
            --color-lilac-deep: #8B5CF6;
            --color-lilac-bg: rgba(167, 139, 250, 0.12);
            --color-bg: #F4F7FA;
            --color-surface: #FFFFFF;
            --color-text: #1F2937;
            --color-text-secondary: #4B5563;
            --color-text-muted: #6B7280;
            --color-nav-bg: #1F2A3D;
            --color-nav-bg-dark: #16202E;
            --color-nav-text: #DCE3EC;
            --color-nav-hover: #FFFFFF;
            --color-border: rgba(30, 58, 95, 0.12);
            --color-border-lilac: rgba(167, 139, 250, 0.3);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --shadow-card: 0 2px 8px rgba(30, 58, 95, 0.08);
            --shadow-card-hover: 0 8px 24px rgba(30, 58, 95, 0.14);
            --shadow-btn: 0 2px 6px rgba(139, 92, 246, 0.25);
            --transition: 0.25s ease;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Source Han Sans SC', sans-serif;
            --container-max: 1180px;
            --section-padding: 72px 0;
            --section-padding-mobile: 44px 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-lilac-deep);
        }
        button, input, textarea {
            font-family: var(--font-family);
            font-size: 15px;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section {
            padding: var(--section-padding);
            position: relative;
        }
        .section-alt {
            background-color: #EDF1F6;
        }
        .section-white {
            background-color: #FFFFFF;
        }
        .section-title-wrap {
            max-width: 720px;
            margin-bottom: 36px;
        }
        .section-tag {
            display: inline-block;
            background: var(--color-lilac-bg);
            color: var(--color-lilac-deep);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--color-text);
            margin-bottom: 10px;
            position: relative;
            padding-left: 16px;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            background: linear-gradient(180deg, var(--color-lilac), var(--color-lilac-deep));
            border-radius: 2px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-top: 6px;
            max-width: 680px;
        }

        /* Header & Navigation */
        .site-header {
            background-color: var(--color-nav-bg);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.12);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .header-logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-nav-hover);
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .header-logo a:hover {
            color: var(--color-lilac-light);
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-lilac), var(--color-lilac-deep));
            border-radius: 8px;
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            margin-left: auto;
            margin-right: 20px;
        }
        .header-nav a {
            color: var(--color-nav-text);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
        }
        .header-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background-color: var(--color-lilac);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .header-nav a:hover {
            color: var(--color-nav-hover);
        }
        .header-nav a:hover::after {
            width: 100%;
        }
        .header-nav a.active {
            color: var(--color-nav-hover);
            font-weight: 600;
        }
        .header-nav a.active::after {
            width: 100%;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 0.02em;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--color-lilac);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover {
            background: var(--color-lilac-deep);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(139, 92, 246, 0.35);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: var(--shadow-btn);
        }
        .btn-outline {
            background: #fff;
            color: var(--color-lilac-deep);
            border-color: var(--color-lilac);
        }
        .btn-outline:hover {
            background: var(--color-lilac-bg);
            color: var(--color-lilac-deep);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        .btn-nav {
            background: var(--color-lilac);
            color: #fff;
            padding: 8px 18px;
            font-size: 14px;
            border-radius: var(--radius-sm);
            white-space: nowrap;
        }
        .btn-nav:hover {
            background: var(--color-lilac-deep);
            color: #fff;
            transform: translateY(-1px);
        }

        /* Mobile nav toggle */
        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--color-nav-text);
            font-size: 24px;
            cursor: pointer;
            padding: 8px;
            transition: color var(--transition);
        }
        .nav-toggle:hover {
            color: var(--color-nav-hover);
        }

        /* Hero banner (short) */
        .cat-hero {
            position: relative;
            padding: 72px 0 56px;
            background: linear-gradient(135deg, #16202E 0%, #1F2A3D 55%, #2C3A55 100%);
            overflow: hidden;
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: url('/assets/images/b5e0d514247e1a1d.webp') center/cover no-repeat;
            opacity: 0.18;
            z-index: 1;
        }
        .cat-hero .container {
            position: relative;
            z-index: 2;
            max-width: 860px;
        }
        .cat-hero h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.35;
            color: #fff;
            margin-bottom: 16px;
        }
        .cat-hero h1 .highlight {
            color: var(--color-lilac-light);
        }
        .cat-hero .cat-subtitle {
            font-size: 16px;
            color: var(--color-nav-text);
            line-height: 1.9;
            max-width: 640px;
            margin-bottom: 24px;
        }
        .cat-hero .hero-meta {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(220, 227, 236, 0.75);
        }
        .cat-hero .hero-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* Card grid */
        .grid-cards {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-lilac);
            transform: translateY(-4px);
        }
        .card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #E6EBF2;
        }
        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card:hover .card-image img {
            transform: scale(1.04);
        }
        .card-body {
            padding: 20px 22px 22px;
        }
        .card-tag {
            display: inline-block;
            background: var(--color-lilac-bg);
            color: var(--color-lilac-deep);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            margin-bottom: 10px;
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .card-text {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-lilac-deep);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .card-link i {
            font-size: 12px;
            transition: transform var(--transition);
        }
        .card-link:hover i {
            transform: translateX(3px);
        }

        /* Value section */
        .value-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .value-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            aspect-ratio: 4/3;
        }
        .value-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .value-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 14px;
        }
        .value-content p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-bottom: 10px;
        }
        .value-points {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }
        .value-points li {
            font-size: 14px;
            color: var(--color-text-secondary);
            padding: 6px 0 6px 26px;
            position: relative;
            line-height: 1.7;
        }
        .value-points li::before {
            content: '\f058';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--color-lilac-deep);
            position: absolute;
            left: 0;
            top: 6px;
            font-size: 14px;
        }

        /* Stats band */
        .stats-band {
            background: var(--color-nav-bg);
            padding: 40px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .stat-item {
            padding: 12px;
        }
        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-lilac-light);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(220, 227, 236, 0.8);
            letter-spacing: 0.02em;
        }

        /* Topic entry cards */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 18px;
        }
        .topic-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 18px 20px;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            display: block;
            color: var(--color-text);
        }
        .topic-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-lilac);
            transform: translateY(-3px);
        }
        .topic-card h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .topic-card p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 8px;
            line-height: 1.6;
        }
        .topic-card span {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-lilac-deep);
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, var(--color-nav-bg) 0%, var(--color-primary-dark) 100%);
            padding: 64px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 15px;
            color: var(--color-nav-text);
            max-width: 520px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }
        .cta-section .btn {
            padding: 12px 30px;
            font-size: 16px;
        }

        /* News list (CMS) */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            gap: 18px;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            padding: 16px 18px;
            transition: all var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-lilac);
            transform: translateY(-2px);
        }
        .news-thumb {
            flex-shrink: 0;
            width: 100px;
            height: 72px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: #E6EBF2;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-content {
            flex: 1;
        }
        .news-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
            line-height: 1.5;
        }
        .news-title a {
            color: var(--color-text);
        }
        .news-title a:hover {
            color: var(--color-lilac-deep);
        }
        .news-summary {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .news-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-empty {
            text-align: center;
            padding: 32px 20px;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
            color: var(--color-text-muted);
            font-size: 14px;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: #F8FAFC;
        }
        .faq-question i {
            color: var(--color-lilac-deep);
            font-size: 14px;
            transition: transform 0.25s ease;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 22px;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 22px 20px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--color-nav-bg-dark);
            color: var(--color-nav-text);
            padding: 56px 0 28px;
            font-size: 14px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1fr 0.6fr 0.6fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo-mark {
            margin-bottom: 12px;
        }
        .footer-brand h4 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-brand p {
            font-size: 13px;
            color: rgba(220, 227, 236, 0.7);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-links h5 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-links ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: var(--color-nav-text);
            font-size: 13px;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--color-lilac-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(220, 227, 236, 0.12);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: rgba(220, 227, 236, 0.6);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .section {
                padding: 56px 0;
            }
            .cat-hero h1 {
                font-size: 32px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .site-header .container {
                height: auto;
                min-height: 60px;
                padding-top: 10px;
                padding-bottom: 10px;
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
                position: absolute;
                right: 16px;
                top: 14px;
                z-index: 110;
            }
            .header-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0;
                margin: 0;
                padding: 16px 0 8px;
                background: var(--color-nav-bg);
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                box-shadow: 0 12px 24px rgba(0,0,0,0.18);
                z-index: 105;
            }
            .header-nav.open {
                display: flex;
            }
            .header-nav a {
                padding: 12px 24px;
                width: 100%;
                font-size: 15px;
                border-bottom: 1px solid rgba(220,227,236,0.08);
            }
            .header-nav a::after {
                display: none;
            }
            .header-actions {
                display: none;
            }
            .header-logo a {
                font-size: 18px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .cat-hero {
                padding: 44px 0 40px;
            }
            .cat-hero h1 {
                font-size: 26px;
            }
            .cat-hero .cat-subtitle {
                font-size: 14px;
            }
            .value-block {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .grid-cards {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 28px;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .news-item {
                flex-direction: column;
                gap: 12px;
            }
            .news-thumb {
                width: 100%;
                height: 140px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .cat-hero h1 {
                font-size: 22px;
            }
            .card-body {
                padding: 16px 18px 18px;
            }
            .card-title {
                font-size: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
        }