/* roulang page: index */
:root {
            --color-brand: #2563eb;
            --color-brand-dark: #1d4ed8;
            --color-brand-light: #dbeafe;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-surface: #f8fafc;
            --color-surface-alt: #f1f5f9;
            --color-text: #1e293b;
            --color-text-soft: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-full: 9999px;
            --shadow-soft: 0 2px 15px rgba(0,0,0,0.04);
            --shadow-card: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-card-hover: 0 8px 40px rgba(0,0,0,0.10);
            --shadow-glow: 0 0 40px rgba(37,99,235,0.15);
            --shadow-nav: 0 1px 3px rgba(0,0,0,0.04);
            --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

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

        body {
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            font-size: 16px;
            line-height: 1.65;
            color: #1e293b;
            background-color: #f8fafc;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

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

        /* Container */
        .container-custom {
            width: 100%;
            max-width: 1220px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        @media (max-width: 640px) {
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* Header & Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-nav);
            transition: all var(--transition-smooth);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 1.5rem;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.25rem;
            color: #1e293b;
            white-space: nowrap;
            letter-spacing: -0.01em;
            transition: color var(--transition-fast);
        }

        .logo-link:hover {
            color: var(--color-brand);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            font-weight: 800;
            flex-shrink: 0;
            box-shadow: 0 2px 10px rgba(37,99,235,0.25);
        }

        /* Segment Tab Navigation */
        .nav-segment {
            display: flex;
            align-items: center;
            gap: 0.375rem;
            background: #f1f5f9;
            border-radius: var(--radius-full);
            padding: 0.3rem;
        }

        .nav-segment-item {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.15rem;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: #64748b;
            white-space: nowrap;
            transition: all var(--transition-bounce);
            position: relative;
            letter-spacing: 0.01em;
        }

        .nav-segment-item:hover {
            color: #334155;
            background: rgba(255,255,255,0.6);
        }

        .nav-segment-item.active {
            background: #ffffff;
            color: #1e293b;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08), 0 0 0 1px rgba(0,0,0,0.03);
        }

        .nav-segment-item .nav-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #cbd5e1;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }

        .nav-segment-item.active .nav-dot {
            background: #2563eb;
            box-shadow: 0 0 6px rgba(37,99,235,0.4);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.35rem;
            background: #2563eb;
            color: #fff;
            font-weight: 600;
            font-size: 0.875rem;
            border-radius: var(--radius-full);
            white-space: nowrap;
            transition: all var(--transition-bounce);
            box-shadow: 0 2px 12px rgba(37,99,235,0.25);
        }

        .header-cta:hover {
            background: #1d4ed8;
            box-shadow: 0 4px 20px rgba(37,99,235,0.35);
            transform: translateY(-1px);
        }

        .header-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(37,99,235,0.2);
        }

        /* Mobile nav scroll */
        .nav-scroll-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding-bottom: 2px;
        }

        .nav-scroll-wrap::-webkit-scrollbar {
            display: none;
        }

        @media (max-width: 768px) {
            .header-inner {
                height: auto;
                flex-wrap: wrap;
                padding-top: 0.75rem;
                padding-bottom: 0.75rem;
                gap: 0.75rem;
            }
            .logo-link {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.8rem;
            }
            .nav-scroll-wrap {
                order: 3;
                width: 100%;
                margin-left: -0.5rem;
                margin-right: -0.5rem;
                padding-left: 0.5rem;
                padding-right: 0.5rem;
            }
            .nav-segment {
                width: max-content;
                min-width: 100%;
            }
            .nav-segment-item {
                font-size: 0.8rem;
                padding: 0.45rem 0.9rem;
            }
            .header-cta {
                font-size: 0.8rem;
                padding: 0.45rem 1rem;
            }
        }

        @media (max-width: 480px) {
            .header-inner {
                gap: 0.5rem;
            }
            .logo-link {
                font-size: 1rem;
            }
            .nav-segment-item {
                font-size: 0.75rem;
                padding: 0.4rem 0.75rem;
            }
            .header-cta {
                font-size: 0.75rem;
                padding: 0.4rem 0.85rem;
            }
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            padding: 4.5rem 0 5rem;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.82) 0%, rgba(30,58,138,0.72) 40%, rgba(37,99,235,0.55) 70%, rgba(15,23,42,0.78) 100%);
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, rgba(248,250,252,0.6) 0%, transparent 100%);
            z-index: 2;
        }

        .hero-content {
            position: relative;
            z-index: 3;
            max-width: 720px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.4rem 1rem;
            background: rgba(255,255,255,0.12);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: var(--radius-full);
            color: #e2e8f0;
            font-size: 0.85rem;
            font-weight: 500;
            backdrop-filter: blur(6px);
            margin-bottom: 1.5rem;
            letter-spacing: 0.02em;
        }

        .hero-badge .badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #22c55e;
            box-shadow: 0 0 8px rgba(34,197,94,0.6);
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.4); }
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1.25rem;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 50%, #fcd34d 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: #cbd5e1;
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 560px;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 0.85rem;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 1.8rem;
            background: #ffffff;
            color: #1e293b;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: var(--radius-full);
            transition: all var(--transition-bounce);
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
        }

        .btn-hero-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0,0,0,0.2);
            background: #f8fafc;
        }

        .btn-hero-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 1.8rem;
            background: rgba(255,255,255,0.08);
            color: #ffffff;
            font-weight: 500;
            font-size: 0.95rem;
            border-radius: var(--radius-full);
            border: 1px solid rgba(255,255,255,0.25);
            transition: all var(--transition-smooth);
            backdrop-filter: blur(4px);
        }

        .btn-hero-secondary:hover {
            background: rgba(255,255,255,0.15);
            border-color: rgba(255,255,255,0.4);
            transform: translateY(-1px);
        }

        @media (max-width: 768px) {
            .hero-section {
                padding: 3rem 0 3.5rem;
            }
            .hero-title {
                font-size: 2.1rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .btn-hero-primary,
            .btn-hero-secondary {
                font-size: 0.85rem;
                padding: 0.65rem 1.3rem;
            }
        }

        @media (max-width: 480px) {
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-desc {
                font-size: 0.9rem;
            }
            .hero-buttons {
                flex-direction: column;
            }
            .btn-hero-primary,
            .btn-hero-secondary {
                width: 100%;
                justify-content: center;
            }
        }

        /* Section Common */
        .section-block {
            padding: 4rem 0;
        }

        @media (max-width: 768px) {
            .section-block {
                padding: 2.5rem 0;
            }
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: #2563eb;
            background: #dbeafe;
            padding: 0.3rem 0.85rem;
            border-radius: var(--radius-full);
            margin-bottom: 0.75rem;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: #1e293b;
            letter-spacing: -0.015em;
            line-height: 1.25;
            margin-bottom: 0.75rem;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: #64748b;
            max-width: 600px;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.55rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
            }
        }

        /* Features Grid */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

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

        .feature-card {
            background: #ffffff;
            border-radius: var(--radius-xl);
            padding: 1.75rem 1.5rem;
            border: 1px solid #f1f5f9;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #2563eb, #60a5fa);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .feature-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: #e2e8f0;
        }

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

        .feature-icon-wrap {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 1rem;
            background: #eff6ff;
            color: #2563eb;
        }

        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 650;
            color: #1e293b;
            margin-bottom: 0.5rem;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: #64748b;
            line-height: 1.55;
        }

        /* Category Card */
        .category-card-large {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            background: #ffffff;
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid #f1f5f9;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }

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

        .category-card-img {
            height: 100%;
            min-height: 280px;
            object-fit: cover;
        }

        .category-card-body {
            padding: 2.5rem 2rem 2.5rem 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .category-card-body .cat-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: #d97706;
            background: #fef3c7;
            padding: 0.3rem 0.75rem;
            border-radius: var(--radius-full);
            width: fit-content;
            margin-bottom: 0.75rem;
        }

        .category-card-body h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #1e293b;
            margin-bottom: 0.6rem;
            letter-spacing: -0.01em;
        }

        .category-card-body p {
            font-size: 0.95rem;
            color: #64748b;
            line-height: 1.6;
            margin-bottom: 1.25rem;
        }

        .btn-outline-brand {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.6rem 1.3rem;
            border: 2px solid #2563eb;
            color: #2563eb;
            font-weight: 600;
            font-size: 0.9rem;
            border-radius: var(--radius-full);
            transition: all var(--transition-bounce);
            width: fit-content;
        }

        .btn-outline-brand:hover {
            background: #2563eb;
            color: #fff;
            box-shadow: 0 4px 16px rgba(37,99,235,0.25);
        }

        @media (max-width: 768px) {
            .category-card-large {
                grid-template-columns: 1fr;
            }
            .category-card-img {
                min-height: 200px;
                width: 100%;
            }
            .category-card-body {
                padding: 1.5rem;
            }
        }

        /* Stats Row */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 420px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }
        }

        .stat-card {
            text-align: center;
            background: #ffffff;
            border-radius: var(--radius-xl);
            padding: 1.75rem 1rem;
            border: 1px solid #f1f5f9;
            box-shadow: var(--shadow-soft);
            transition: all var(--transition-smooth);
        }

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

        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #2563eb;
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 0.4rem;
        }

        .stat-label {
            font-size: 0.85rem;
            color: #64748b;
            font-weight: 500;
        }

        /* News List */
        .news-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }

        @media (max-width: 1024px) {
            .news-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 600px) {
            .news-list {
                grid-template-columns: 1fr;
            }
        }

        .news-card {
            background: #ffffff;
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid #f1f5f9;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

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

        .news-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: #f1f5f9;
        }

        .news-card-body {
            padding: 1.25rem 1.2rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.78rem;
            color: #94a3b8;
            margin-bottom: 0.5rem;
            flex-wrap: wrap;
        }

        .news-card-tag {
            font-size: 0.72rem;
            font-weight: 600;
            padding: 0.2rem 0.6rem;
            border-radius: var(--radius-full);
            background: #eff6ff;
            color: #2563eb;
            white-space: nowrap;
        }

        .news-card h4 {
            font-size: 1.05rem;
            font-weight: 650;
            color: #1e293b;
            line-height: 1.4;
            margin-bottom: 0.5rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .news-card:hover h4 {
            color: #2563eb;
        }

        .news-card p {
            font-size: 0.85rem;
            color: #64748b;
            line-height: 1.5;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 3rem 1rem;
            color: #94a3b8;
            font-size: 1rem;
            background: #ffffff;
            border-radius: var(--radius-xl);
            border: 1px dashed #e2e8f0;
        }

        /* Steps */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            counter-reset: step;
        }

        @media (max-width: 768px) {
            .steps-list {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
        }

        .step-item {
            position: relative;
            background: #ffffff;
            border-radius: var(--radius-xl);
            padding: 1.75rem 1.5rem;
            border: 1px solid #f1f5f9;
            box-shadow: var(--shadow-soft);
            counter-increment: step;
            transition: all var(--transition-smooth);
        }

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

        .step-item::before {
            content: counter(step);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #2563eb;
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }

        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 650;
            color: #1e293b;
            margin-bottom: 0.4rem;
        }

        .step-item p {
            font-size: 0.88rem;
            color: #64748b;
            line-height: 1.55;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid #f1f5f9;
            box-shadow: var(--shadow-soft);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: #e2e8f0;
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 1.15rem 1.35rem;
            font-weight: 600;
            font-size: 0.98rem;
            color: #1e293b;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            cursor: pointer;
            transition: color var(--transition-fast);
            background: transparent;
        }

        .faq-question:hover {
            color: #2563eb;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #f1f5f9;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: #64748b;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover .faq-icon {
            background: #2563eb;
            color: #fff;
        }

        .faq-answer {
            padding: 0 1.35rem 1.15rem;
            font-size: 0.88rem;
            color: #64748b;
            line-height: 1.6;
            display: none;
        }

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

        .faq-item.open .faq-icon {
            background: #2563eb;
            color: #fff;
            transform: rotate(45deg);
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 40%, #2563eb 70%, #1e40af 100%);
            border-radius: var(--radius-xl);
            padding: 3.5rem 2.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(255,255,255,0.05);
        }

        .cta-section h2 {
            position: relative;
            z-index: 1;
            font-size: 1.8rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }

        .cta-section p {
            position: relative;
            z-index: 1;
            color: #cbd5e1;
            font-size: 1rem;
            max-width: 500px;
            margin: 0 auto 1.75rem;
            line-height: 1.6;
        }

        .btn-cta-large {
            position: relative;
            z-index: 1;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 2.2rem;
            background: #ffffff;
            color: #1e293b;
            font-weight: 700;
            font-size: 1rem;
            border-radius: var(--radius-full);
            transition: all var(--transition-bounce);
            box-shadow: 0 6px 28px rgba(0,0,0,0.2);
        }

        .btn-cta-large:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0,0,0,0.28);
            background: #f8fafc;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 2.5rem 1.5rem;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .btn-cta-large {
                font-size: 0.9rem;
                padding: 0.7rem 1.6rem;
            }
        }

        /* Footer */
        .site-footer {
            background: #ffffff;
            border-top: 1px solid #f1f5f9;
            padding: 3rem 0 2rem;
            margin-top: 1rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }

        .footer-brand-name {
            font-weight: 700;
            font-size: 1.15rem;
            color: #1e293b;
            margin-bottom: 0.6rem;
        }

        .footer-brand-desc {
            font-size: 0.88rem;
            color: #64748b;
            line-height: 1.55;
            max-width: 300px;
        }

        .footer-links h5 {
            font-weight: 650;
            font-size: 0.9rem;
            color: #1e293b;
            margin-bottom: 0.75rem;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .footer-links a {
            font-size: 0.85rem;
            color: #64748b;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: #2563eb;
        }

        .footer-bottom {
            border-top: 1px solid #f1f5f9;
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.82rem;
            color: #94a3b8;
        }

        @media (max-width: 480px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* Focus accessibility */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid #2563eb;
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* Smooth page load */
        @media (prefers-reduced-motion: no-preference) {
            .feature-card,
            .news-card,
            .stat-card,
            .step-item,
            .faq-item {
                animation: fadeInUp 0.5s ease forwards;
                opacity: 0;
            }
            .feature-card:nth-child(1) { animation-delay: 0.05s; }
            .feature-card:nth-child(2) { animation-delay: 0.1s; }
            .feature-card:nth-child(3) { animation-delay: 0.15s; }
            .feature-card:nth-child(4) { animation-delay: 0.2s; }
            .stat-card:nth-child(1) { animation-delay: 0.05s; }
            .stat-card:nth-child(2) { animation-delay: 0.1s; }
            .stat-card:nth-child(3) { animation-delay: 0.15s; }
            .stat-card:nth-child(4) { animation-delay: 0.2s; }
            .step-item:nth-child(1) { animation-delay: 0.05s; }
            .step-item:nth-child(2) { animation-delay: 0.1s; }
            .step-item:nth-child(3) { animation-delay: 0.15s; }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(16px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

/* roulang page: article */
:root {
            --color-primary: #1a56db;
            --color-primary-dark: #1040b0;
            --color-primary-light: #e8f0fe;
            --color-accent: #f59e0b;
            --color-accent-light: #fef3c7;
            --color-bg: #f8fafc;
            --color-white: #ffffff;
            --color-text: #1e293b;
            --color-text-soft: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #10b981;
            --color-danger: #ef4444;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.12);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.25s ease;
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --content-max-width: 820px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

        .container-custom {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-content {
            width: 100%;
            max-width: var(--content-max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-xs);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-text);
            white-space: nowrap;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
        }

        .logo-link:hover {
            opacity: 0.82;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary) 0%, #3b82f6 100%);
            color: #fff;
            font-weight: 800;
            font-size: 1.15rem;
            letter-spacing: -0.5px;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(26, 86, 219, 0.3);
        }

        .nav-scroll-wrap {
            display: flex;
            align-items: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            flex: 1;
            justify-content: center;
        }

        .nav-scroll-wrap::-webkit-scrollbar {
            display: none;
        }

        .nav-segment {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--color-border-light);
            border-radius: 50px;
            padding: 5px;
            white-space: nowrap;
        }

        .nav-segment-item {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 9px 20px;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all var(--transition-normal);
            position: relative;
        }

        .nav-segment-item:hover {
            color: var(--color-text);
            background: rgba(255, 255, 255, 0.6);
        }

        .nav-segment-item.active {
            background: var(--color-white);
            color: var(--color-primary);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }

        .nav-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--color-text-light);
            transition: all var(--transition-normal);
            flex-shrink: 0;
        }

        .nav-segment-item.active .nav-dot {
            background: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.18);
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 10px 20px;
            border-radius: 50px;
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-normal);
            box-shadow: 0 2px 10px rgba(26, 86, 219, 0.28);
        }

        .header-cta:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 4px 16px rgba(26, 86, 219, 0.38);
            transform: translateY(-1px);
            color: #fff;
        }

        /* ========== MAIN ========== */
        .site-main {
            flex: 1;
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 20px 0 8px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.88rem;
            color: var(--color-text-soft);
        }

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

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

        .breadcrumb .sep {
            color: var(--color-text-light);
            font-size: 0.7rem;
            margin: 0 4px;
        }

        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
            pointer-events: none;
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* Article Hero */
        .article-hero {
            padding: 24px 0 32px;
        }

        .article-hero-inner {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            background: var(--color-primary-light);
            color: var(--color-primary);
            width: fit-content;
            transition: all var(--transition-fast);
        }

        .article-category-badge:hover {
            background: #d4e4fc;
            color: var(--color-primary-dark);
        }

        .article-hero h1 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-text);
            letter-spacing: -0.3px;
        }

        .article-meta-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.9rem;
            color: var(--color-text-soft);
        }

        .article-meta-row .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta-row .meta-item i {
            font-size: 0.85rem;
            color: var(--color-text-light);
        }

        /* Article Cover */
        .article-cover-wrap {
            padding: 0 0 8px;
        }

        .article-cover-wrap img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            object-fit: cover;
            max-height: 460px;
        }

        /* Article Content */
        .article-content-section {
            padding: 20px 0 40px;
        }

        .article-content {
            font-size: 1.06rem;
            line-height: 1.85;
            color: var(--color-text);
            word-break: break-word;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 36px 0 14px;
            color: var(--color-text);
            padding-left: 16px;
            border-left: 4px solid var(--color-primary);
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin: 28px 0 10px;
            color: var(--color-text);
        }

        .article-content h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 22px 0 8px;
            color: var(--color-text);
        }

        .article-content p {
            margin-bottom: 16px;
        }

        .article-content ul,
        .article-content ol {
            margin: 12px 0 20px;
            padding-left: 24px;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content blockquote {
            margin: 20px 0;
            padding: 16px 22px;
            background: var(--color-primary-light);
            border-left: 4px solid var(--color-primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-soft);
            font-style: italic;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-content a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content a:hover {
            color: var(--color-primary-dark);
        }

        .article-content code {
            background: var(--color-border-light);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
        }

        .article-content pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 20px 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .article-content pre code {
            background: none;
            padding: 0;
            font-size: inherit;
        }

        /* Article Footer Tags */
        .article-footer-tags {
            padding: 20px 0;
            border-top: 1px solid var(--color-border);
            margin-top: 10px;
        }

        .article-tags-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }

        .article-tags-row .tags-label {
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--color-text-soft);
            flex-shrink: 0;
        }

        .tag-chip {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 50px;
            font-size: 0.82rem;
            background: var(--color-border-light);
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
        }

        .tag-chip:hover {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        /* Not Found State */
        .not-found-section {
            padding: 80px 0;
            text-align: center;
        }

        .not-found-icon {
            font-size: 4rem;
            color: var(--color-text-light);
            margin-bottom: 20px;
        }

        .not-found-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text);
        }

        .not-found-section p {
            color: var(--color-text-soft);
            margin-bottom: 28px;
            font-size: 1rem;
        }

        .btn-primary-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-normal);
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.3);
        }

        .btn-primary-lg:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 6px 22px rgba(26, 86, 219, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }

        /* Related Posts */
        .related-section {
            padding: 40px 0 60px;
            background: var(--color-white);
            border-top: 1px solid var(--color-border);
        }

        .related-section .section-heading {
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 28px;
            text-align: center;
            position: relative;
        }

        .related-section .section-heading::after {
            content: '';
            display: block;
            width: 50px;
            height: 3px;
            background: var(--color-primary);
            border-radius: 3px;
            margin: 10px auto 0;
        }

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

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

        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-primary-light);
        }

        .related-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }

        .related-card-body {
            padding: 16px 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .related-card-body .card-cat {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 3px 10px;
            border-radius: 50px;
            width: fit-content;
        }

        .related-card-body h4 {
            font-size: 0.98rem;
            font-weight: 600;
            line-height: 1.45;
            color: var(--color-text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-body .card-date {
            font-size: 0.8rem;
            color: var(--color-text-light);
            margin-top: auto;
        }

        .related-empty {
            text-align: center;
            padding: 40px 0;
            color: var(--color-text-soft);
            font-size: 0.95rem;
        }

        /* CTA Section */
        .cta-section {
            padding: 60px 0 70px;
            background: linear-gradient(160deg, #0f172a 0%, #1e3a5f 50%, #1a56db 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.025);
            pointer-events: none;
        }

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

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.78);
            font-size: 1.08rem;
            margin-bottom: 30px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-btn-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-cta-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            background: #fff;
            color: var(--color-primary);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-normal);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
        }

        .btn-cta-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            background: #f0f4ff;
            color: var(--color-primary-dark);
        }

        .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.45);
            transition: all var(--transition-normal);
        }

        .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 50px 0 28px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand-name {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand-desc {
            font-size: 0.9rem;
            line-height: 1.65;
            color: #94a3b8;
            max-width: 360px;
        }

        .footer-links h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

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

        .footer-links ul li {
            margin-bottom: 9px;
        }

        .footer-links ul li a {
            color: #94a3b8;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 22px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.84rem;
            color: #64748b;
        }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .article-hero h1 {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 56px;
                gap: 12px;
            }

            .logo-link {
                font-size: 1rem;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }

            .nav-segment-item {
                padding: 7px 14px;
                font-size: 0.82rem;
            }

            .header-cta {
                padding: 8px 14px;
                font-size: 0.8rem;
                gap: 4px;
            }

            .header-cta i {
                font-size: 0.75rem;
            }

            .article-hero h1 {
                font-size: 1.45rem;
            }

            .article-content {
                font-size: 1rem;
                line-height: 1.75;
            }

            .article-content h2 {
                font-size: 1.3rem;
            }

            .article-content h3 {
                font-size: 1.12rem;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .related-card-img {
                height: 200px;
            }

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

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

            .cta-section h2 {
                font-size: 1.5rem;
            }

            .cta-section p {
                font-size: 0.95rem;
            }

            .breadcrumb {
                font-size: 0.8rem;
            }

            .container-custom {
                padding: 0 16px;
            }

            .container-content {
                padding: 0 16px;
            }

            .nav-scroll-wrap {
                justify-content: flex-start;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 50px;
                gap: 8px;
            }

            .logo-link span:last-child {
                display: none;
            }

            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }

            .nav-segment-item {
                padding: 6px 12px;
                font-size: 0.78rem;
                gap: 4px;
            }

            .nav-dot {
                width: 5px;
                height: 5px;
            }

            .header-cta {
                padding: 7px 12px;
                font-size: 0.75rem;
            }

            .article-hero h1 {
                font-size: 1.3rem;
            }

            .article-meta-row {
                font-size: 0.8rem;
                gap: 10px;
            }

            .article-content {
                font-size: 0.95rem;
            }

            .cta-section h2 {
                font-size: 1.3rem;
            }

            .btn-cta-white,
            .btn-cta-outline {
                padding: 12px 24px;
                font-size: 0.9rem;
            }

            .related-card-img {
                height: 170px;
            }
        }

/* roulang page: category1 */
/* ============ CSS Design System ============ */
        :root {
            /* 主色系 - 深靛蓝，体现安全专业 */
            --color-primary: #1a3a5c;
            --color-primary-light: #2c5282;
            --color-primary-dark: #0f2440;
            --color-primary-bg: #e8f0fa;
            
            /* 辅色 - 暖金，点缀活力 */
            --color-accent: #e8913a;
            --color-accent-light: #f5b87a;
            --color-accent-dark: #c4752a;
            --color-accent-bg: #fef7f0;
            
            /* 功能色 */
            --color-success: #2d8a5e;
            --color-warning: #d4a017;
            --color-error: #c0392b;
            --color-info: #2980b9;
            
            /* 中性色 */
            --color-white: #ffffff;
            --color-bg: #f7f8fa;
            --color-bg-alt: #eef1f5;
            --color-bg-card: #ffffff;
            --color-text: #1a1d23;
            --color-text-secondary: #4a5568;
            --color-text-muted: #8896a8;
            --color-text-light: #a0aec0;
            --color-border: #e2e6ed;
            --color-border-light: #eef1f5;
            --color-border-hover: #c4cdd8;
            
            /* 圆角 */
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 999px;
            
            /* 阴影 */
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.06);
            --shadow-card-hover: 0 2px 6px rgba(0,0,0,0.05), 0 8px 24px rgba(0,0,0,0.10);
            
            /* 间距 */
            --space-xs: 4px;
            --space-sm: 8px;
            --space-md: 16px;
            --space-lg: 24px;
            --space-xl: 32px;
            --space-2xl: 48px;
            --space-3xl: 64px;
            --space-4xl: 80px;
            
            /* 字体 */
            --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --font-size-xs: 0.75rem;
            --font-size-sm: 0.85rem;
            --font-size-base: 0.95rem;
            --font-size-md: 1.05rem;
            --font-size-lg: 1.2rem;
            --font-size-xl: 1.5rem;
            --font-size-2xl: 1.8rem;
            --font-size-3xl: 2.2rem;
            --font-size-4xl: 2.8rem;
            
            /* 导航 */
            --nav-height: 64px;
            --nav-bg: rgba(255,255,255,0.95);
            
            /* 过渡 */
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.4s ease;
        }
        
        /* ============ Reset & Base ============ */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        body {
            font-family: var(--font-family);
            font-size: var(--font-size-base);
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
        }
        
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        
        ul, ol {
            list-style: none;
        }
        
        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            font-weight: 700;
        }
        
        /* ============ Container ============ */
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-lg);
        }
        
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 var(--space-md);
            }
        }
        
        /* ============ Header / Navigation ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--nav-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-xs);
        }
        
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-lg);
            width: 100%;
        }
        
        .logo-link {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            font-weight: 700;
            font-size: var(--font-size-lg);
            color: var(--color-primary);
            white-space: nowrap;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
        }
        
        .logo-link:hover {
            opacity: 0.85;
        }
        
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: var(--color-white);
            border-radius: var(--radius-md);
            font-weight: 800;
            font-size: var(--font-size-lg);
            flex-shrink: 0;
        }
        
        .nav-scroll-wrap {
            flex: 1;
            display: flex;
            justify-content: center;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        
        .nav-scroll-wrap::-webkit-scrollbar {
            display: none;
        }
        
        .nav-segment {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            background: var(--color-bg-alt);
            border-radius: var(--radius-full);
            padding: 4px;
            white-space: nowrap;
        }
        
        .nav-segment-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-size: var(--font-size-sm);
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-base);
            position: relative;
        }
        
        .nav-segment-item:hover {
            color: var(--color-text);
            background: rgba(255,255,255,0.6);
        }
        
        .nav-segment-item.active {
            background: var(--color-white);
            color: var(--color-primary);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }
        
        .nav-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-text-muted);
            transition: all var(--transition-base);
            flex-shrink: 0;
        }
        
        .nav-segment-item.active .nav-dot {
            background: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(232,145,58,0.2);
        }
        
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            background: var(--color-accent);
            color: var(--color-white);
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: var(--font-size-sm);
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-base);
            box-shadow: 0 2px 8px rgba(232,145,58,0.25);
        }
        
        .header-cta:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 4px 16px rgba(232,145,58,0.35);
            transform: translateY(-1px);
            color: var(--color-white);
        }
        
        .header-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(232,145,58,0.2);
        }
        
        /* Mobile Nav */
        @media (max-width: 768px) {
            .header-inner {
                gap: var(--space-sm);
            }
            .logo-link span:last-child {
                display: none;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: var(--font-size-base);
            }
            .nav-segment-item {
                padding: 6px 14px;
                font-size: var(--font-size-xs);
            }
            .header-cta {
                padding: 8px 14px;
                font-size: var(--font-size-xs);
            }
            .header-cta i {
                margin: 0;
            }
            .header-cta span, .header-cta {
                gap: 0;
            }
        }
        
        @media (max-width: 520px) {
            .site-header {
                --nav-height: 56px;
            }
            .nav-segment-item {
                padding: 5px 10px;
                font-size: 0.7rem;
            }
            .header-cta {
                padding: 7px 10px;
                font-size: 0.7rem;
            }
            .header-cta i {
                font-size: 0.75rem;
            }
            .nav-dot {
                width: 4px;
                height: 4px;
            }
        }
        
        /* ============ Category Banner ============ */
        .category-banner {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: var(--space-4xl) 0 var(--space-3xl);
            color: var(--color-white);
            overflow: hidden;
        }
        
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, 
                rgba(15,36,64,0.88) 0%, 
                rgba(26,58,92,0.78) 40%, 
                rgba(44,82,130,0.65) 100%);
            z-index: 1;
        }
        
        .category-banner .container-custom {
            position: relative;
            z-index: 2;
        }
        
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            font-size: var(--font-size-sm);
            color: rgba(255,255,255,0.75);
            margin-bottom: var(--space-lg);
            flex-wrap: wrap;
        }
        
        .breadcrumb a {
            color: rgba(255,255,255,0.85);
            transition: color var(--transition-fast);
        }
        
        .breadcrumb a:hover {
            color: var(--color-white);
        }
        
        .breadcrumb .separator {
            color: rgba(255,255,255,0.4);
            font-size: 0.7rem;
        }
        
        .breadcrumb .current {
            color: var(--color-accent-light);
            font-weight: 500;
        }
        
        .category-banner-content {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: var(--space-2xl);
            flex-wrap: wrap;
        }
        
        .category-banner-info h1 {
            font-size: var(--font-size-4xl);
            font-weight: 800;
            margin-bottom: var(--space-md);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        
        .category-banner-info .category-desc {
            font-size: var(--font-size-md);
            color: rgba(255,255,255,0.85);
            max-width: 560px;
            line-height: 1.6;
        }
        
        .category-stats {
            display: flex;
            gap: var(--space-xl);
            flex-shrink: 0;
        }
        
        .stat-item {
            text-align: center;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-lg);
            padding: var(--space-lg) var(--space-xl);
            border: 1px solid rgba(255,255,255,0.15);
            min-width: 100px;
        }
        
        .stat-number {
            font-size: var(--font-size-3xl);
            font-weight: 800;
            color: var(--color-white);
            line-height: 1;
            margin-bottom: var(--space-xs);
        }
        
        .stat-label {
            font-size: var(--font-size-xs);
            color: rgba(255,255,255,0.7);
            font-weight: 500;
        }
        
        @media (max-width: 768px) {
            .category-banner {
                padding: var(--space-3xl) 0 var(--space-2xl);
            }
            .category-banner-info h1 {
                font-size: var(--font-size-3xl);
            }
            .category-banner-content {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--space-lg);
            }
            .category-stats {
                width: 100%;
                gap: var(--space-md);
            }
            .stat-item {
                flex: 1;
                padding: var(--space-md);
                min-width: auto;
            }
            .stat-number {
                font-size: var(--font-size-xl);
            }
        }
        
        @media (max-width: 520px) {
            .category-banner-info h1 {
                font-size: var(--font-size-2xl);
            }
            .category-desc {
                font-size: var(--font-size-sm);
            }
            .stat-number {
                font-size: var(--font-size-lg);
            }
            .category-stats {
                gap: var(--space-sm);
            }
            .stat-item {
                padding: var(--space-sm) var(--space-md);
            }
        }
        
        /* ============ Sub-category Filter Tabs ============ */
        .subcat-section {
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: var(--nav-height);
            z-index: 99;
            padding: var(--space-md) 0;
        }
        
        .subcat-scroll {
            display: flex;
            gap: var(--space-sm);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 2px 0;
        }
        
        .subcat-scroll::-webkit-scrollbar {
            display: none;
        }
        
        .subcat-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: var(--radius-full);
            font-size: var(--font-size-sm);
            font-weight: 500;
            color: var(--color-text-secondary);
            background: var(--color-bg-alt);
            white-space: nowrap;
            cursor: pointer;
            transition: all var(--transition-base);
            border: 1.5px solid transparent;
            user-select: none;
        }
        
        .subcat-chip:hover {
            background: var(--color-bg);
            color: var(--color-text);
            border-color: var(--color-border-hover);
        }
        
        .subcat-chip.active {
            background: var(--color-primary-bg);
            color: var(--color-primary);
            border-color: var(--color-primary-light);
            font-weight: 600;
            box-shadow: var(--shadow-xs);
        }
        
        @media (max-width: 768px) {
            .subcat-section {
                top: var(--nav-height);
            }
            .subcat-chip {
                padding: 6px 13px;
                font-size: var(--font-size-xs);
            }
        }
        
        /* ============ Main Content Area ============ */
        .main-content {
            padding: var(--space-2xl) 0 var(--space-3xl);
        }
        
        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: var(--space-xl);
            flex-wrap: wrap;
            gap: var(--space-md);
        }
        
        .section-title {
            font-size: var(--font-size-2xl);
            font-weight: 700;
            color: var(--color-text);
            display: flex;
            align-items: center;
            gap: var(--space-sm);
        }
        
        .section-title .title-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--color-accent-bg);
            color: var(--color-accent);
            border-radius: var(--radius-md);
            font-size: var(--font-size-base);
        }
        
        .result-count {
            font-size: var(--font-size-sm);
            color: var(--color-text-muted);
            font-weight: 400;
        }
        
        .sort-options {
            display: flex;
            gap: var(--space-xs);
            flex-wrap: wrap;
        }
        
        .sort-btn {
            padding: 6px 14px;
            border-radius: var(--radius-full);
            font-size: var(--font-size-xs);
            font-weight: 500;
            color: var(--color-text-muted);
            background: transparent;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: 1px solid transparent;
        }
        
        .sort-btn:hover {
            color: var(--color-text);
            background: var(--color-bg-alt);
        }
        
        .sort-btn.active {
            color: var(--color-primary);
            background: var(--color-primary-bg);
            border-color: var(--color-primary-light);
            font-weight: 600;
        }
        
        /* ============ Article Grid ============ */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-lg);
        }
        
        .article-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--color-border-light);
            height: 100%;
        }
        
        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-border-hover);
        }
        
        .card-cover {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        
        .article-card:hover .card-cover img {
            transform: scale(1.04);
        }
        
        .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 10px;
            background: rgba(26,58,92,0.85);
            color: var(--color-white);
            font-size: var(--font-size-xs);
            font-weight: 600;
            border-radius: var(--radius-sm);
            backdrop-filter: blur(6px);
            z-index: 2;
        }
        
        .card-body {
            padding: var(--space-lg);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        
        .card-title {
            font-size: var(--font-size-md);
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: var(--space-sm);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }
        
        .article-card:hover .card-title {
            color: var(--color-primary-light);
        }
        
        .card-excerpt {
            font-size: var(--font-size-sm);
            color: var(--color-text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
            margin-bottom: var(--space-md);
        }
        
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: var(--font-size-xs);
            color: var(--color-text-muted);
            padding-top: var(--space-sm);
            border-top: 1px solid var(--color-border-light);
        }
        
        .card-meta-left {
            display: flex;
            align-items: center;
            gap: var(--space-md);
        }
        
        .card-meta-item {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        
        .card-read-btn {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--color-primary-light);
            font-weight: 600;
            font-size: var(--font-size-xs);
            transition: all var(--transition-fast);
        }
        
        .card-read-btn:hover {
            color: var(--color-accent);
            gap: 6px;
        }
        
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-md);
            }
        }
        
        @media (max-width: 640px) {
            .article-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .card-body {
                padding: var(--space-md);
            }
            .card-title {
                font-size: var(--font-size-base);
            }
        }
        
        /* ============ Featured Banner ============ */
        .featured-banner {
            margin: var(--space-2xl) 0;
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
            border-radius: var(--radius-xl);
            overflow: hidden;
            position: relative;
            display: flex;
            align-items: center;
            min-height: 200px;
        }
        
        .featured-banner::after {
            content: '';
            position: absolute;
            right: -60px;
            top: -60px;
            width: 280px;
            height: 280px;
            background: rgba(255,255,255,0.03);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .featured-content {
            flex: 1;
            padding: var(--space-2xl);
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: var(--space-xl);
            flex-wrap: wrap;
        }
        
        .featured-cover {
            width: 160px;
            height: 120px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
            box-shadow: var(--shadow-lg);
        }
        
        .featured-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .featured-info {
            flex: 1;
            min-width: 200px;
        }
        
        .featured-badge {
            display: inline-block;
            padding: 4px 12px;
            background: var(--color-accent);
            color: var(--color-white);
            font-size: var(--font-size-xs);
            font-weight: 700;
            border-radius: var(--radius-full);
            margin-bottom: var(--space-sm);
        }
        
        .featured-info h3 {
            color: var(--color-white);
            font-size: var(--font-size-xl);
            margin-bottom: var(--space-sm);
            line-height: 1.3;
        }
        
        .featured-info p {
            color: rgba(255,255,255,0.8);
            font-size: var(--font-size-sm);
            line-height: 1.5;
            margin-bottom: var(--space-md);
        }
        
        .featured-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-accent-light);
            font-weight: 600;
            font-size: var(--font-size-sm);
            transition: all var(--transition-fast);
        }
        
        .featured-link:hover {
            color: var(--color-white);
            gap: 10px;
        }
        
        @media (max-width: 768px) {
            .featured-content {
                padding: var(--space-lg);
                flex-direction: column;
                align-items: flex-start;
            }
            .featured-cover {
                width: 100%;
                height: 160px;
            }
            .featured-info h3 {
                font-size: var(--font-size-lg);
            }
        }
        
        /* ============ Pagination ============ */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: var(--space-sm);
            margin-top: var(--space-2xl);
            flex-wrap: wrap;
        }
        
        .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: var(--radius-md);
            font-size: var(--font-size-sm);
            font-weight: 500;
            color: var(--color-text-secondary);
            background: var(--color-white);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        
        .page-btn:hover {
            background: var(--color-bg-alt);
            border-color: var(--color-border-hover);
            color: var(--color-text);
        }
        
        .page-btn.active {
            background: var(--color-primary);
            color: var(--color-white);
            border-color: var(--color-primary);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }
        
        .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }
        
        /* ============ CTA Section ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
            padding: var(--space-4xl) 0;
            text-align: center;
            color: var(--color-white);
            position: relative;
            overflow: hidden;
        }
        
        .cta-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            background: rgba(255,255,255,0.03);
            border-radius: 50%;
            top: -100px;
            right: -120px;
            pointer-events: none;
        }
        
        .cta-section::after {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: rgba(255,255,255,0.02);
            border-radius: 50%;
            bottom: -80px;
            left: -100px;
            pointer-events: none;
        }
        
        .cta-section .container-custom {
            position: relative;
            z-index: 1;
        }
        
        .cta-section h2 {
            font-size: var(--font-size-3xl);
            font-weight: 800;
            margin-bottom: var(--space-md);
            letter-spacing: -0.02em;
        }
        
        .cta-section .cta-subtitle {
            font-size: var(--font-size-md);
            color: rgba(255,255,255,0.8);
            margin-bottom: var(--space-xl);
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .cta-buttons {
            display: flex;
            gap: var(--space-md);
            justify-content: center;
            flex-wrap: wrap;
        }
        
        .btn-primary-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: var(--color-accent);
            color: var(--color-white);
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: var(--font-size-md);
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(232,145,58,0.35);
        }
        
        .btn-primary-cta:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232,145,58,0.45);
            color: var(--color-white);
        }
        
        .btn-outline-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: transparent;
            color: var(--color-white);
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: var(--font-size-md);
            border: 2px solid rgba(255,255,255,0.4);
            transition: all var(--transition-base);
        }
        
        .btn-outline-cta:hover {
            border-color: var(--color-white);
            background: rgba(255,255,255,0.1);
            color: var(--color-white);
        }
        
        @media (max-width: 768px) {
            .cta-section {
                padding: var(--space-3xl) 0;
            }
            .cta-section h2 {
                font-size: var(--font-size-2xl);
            }
            .btn-primary-cta,
            .btn-outline-cta {
                padding: 12px 24px;
                font-size: var(--font-size-sm);
            }
        }
        
        /* ============ FAQ Section ============ */
        .faq-section {
            padding: var(--space-3xl) 0;
            background: var(--color-white);
        }
        
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--space-lg);
            max-width: 900px;
            margin: 0 auto;
        }
        
        .faq-item {
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        
        .faq-item:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-sm);
        }
        
        .faq-item h4 {
            font-size: var(--font-size-base);
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: var(--space-sm);
            display: flex;
            align-items: flex-start;
            gap: var(--space-sm);
        }
        
        .faq-item h4 .faq-icon {
            color: var(--color-accent);
            flex-shrink: 0;
            margin-top: 2px;
        }
        
        .faq-item p {
            font-size: var(--font-size-sm);
            color: var(--color-text-secondary);
            line-height: 1.6;
            padding-left: 24px;
        }
        
        @media (max-width: 768px) {
            .faq-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
        }
        
        /* ============ Footer ============ */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255,255,255,0.8);
            padding: var(--space-3xl) 0 var(--space-xl);
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: var(--space-2xl);
            margin-bottom: var(--space-2xl);
        }
        
        .footer-brand-name {
            font-size: var(--font-size-xl);
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: var(--space-sm);
        }
        
        .footer-brand-desc {
            font-size: var(--font-size-sm);
            line-height: 1.6;
            color: rgba(255,255,255,0.6);
            max-width: 340px;
        }
        
        .footer-links h5 {
            font-size: var(--font-size-sm);
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: var(--space-md);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        
        .footer-links ul li {
            margin-bottom: var(--space-sm);
        }
        
        .footer-links ul li a {
            font-size: var(--font-size-sm);
            color: rgba(255,255,255,0.6);
            transition: color var(--transition-fast);
        }
        
        .footer-links ul li a:hover {
            color: var(--color-accent-light);
        }
        
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: var(--space-lg);
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: var(--font-size-xs);
            color: rgba(255,255,255,0.45);
            flex-wrap: wrap;
            gap: var(--space-sm);
        }
        
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-xl);
            }
            .footer-grid > div:first-child {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
        }
        
        /* ============ Utility Classes ============ */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            border: 0;
        }
        
        .text-center { text-align: center; }
        .mt-0 { margin-top: 0; }
        .mb-0 { margin-bottom: 0; }