/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #d4a843;
            --primary-light: #e8c264;
            --primary-dark: #b88e2e;
            --primary-glow: rgba(212, 168, 67, 0.25);
            --bg-deep: #0b0f1a;
            --bg-card: #151a28;
            --bg-card-hover: #1c2235;
            --bg-surface: #1a2035;
            --bg-dark-alt: #0e1320;
            --text-white: #f0f2f5;
            --text-light: #c8ced8;
            --text-muted: #7a8298;
            --border-color: rgba(212, 168, 67, 0.15);
            --border-glow: rgba(212, 168, 67, 0.25);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 14px 48px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 40px rgba(212, 168, 67, 0.08);
            --transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1200px;
            --nav-height: 76px;
        }

        /* ===== 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-body);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-light);
            background: var(--bg-deep);
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-white);
            letter-spacing: -0.01em;
        }
        p {
            margin-bottom: 1rem;
        }
        p:last-child {
            margin-bottom: 0;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Utility ===== */
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 50px 0;
            }
        }
        .section-title {
            font-size: 2.2rem;
            margin-bottom: 0.5rem;
            text-align: center;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 3rem;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-sub {
                font-size: 0.95rem;
                margin-bottom: 2rem;
            }
        }
        .text-center {
            text-align: center;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .gap-1 {
            gap: 8px;
        }
        .gap-2 {
            gap: 16px;
        }
        .gap-3 {
            gap: 24px;
        }
        .gap-4 {
            gap: 32px;
        }

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--bg-deep);
            border-color: var(--primary);
            box-shadow: 0 4px 20px rgba(212, 168, 67, 0.3);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
            color: var(--bg-deep);
            box-shadow: 0 8px 40px rgba(212, 168, 67, 0.45);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0px);
            box-shadow: 0 2px 12px rgba(212, 168, 67, 0.25);
        }
        .btn-secondary {
            background: transparent;
            color: var(--text-white);
            border-color: rgba(255, 255, 255, 0.25);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(212, 168, 67, 0.08);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0px);
        }
        .btn-sm {
            padding: 10px 22px;
            font-size: 0.9rem;
            border-radius: 40px;
        }
        .btn:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 4px;
        }
        @media (max-width: 520px) {
            .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .btn-sm {
                padding: 8px 18px;
                font-size: 0.82rem;
            }
        }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: rgba(212, 168, 67, 0.12);
            color: var(--primary-light);
            border: 1px solid rgba(212, 168, 67, 0.2);
        }
        .badge-sm {
            padding: 2px 10px;
            font-size: 0.7rem;
        }
        .badge-dark {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            border-color: rgba(255, 255, 255, 0.06);
        }

        /* ===== Card ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(212, 168, 67, 0.25);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-image {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 16px;
        }
        .card-image img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }
        .card:hover .card-image img {
            transform: scale(1.04);
        }
        .card-title {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .card-text {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.6;
        }
        .card-footer {
            margin-top: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        @media (max-width: 768px) {
            .card {
                padding: 18px;
            }
            .card-image img {
                height: 160px;
            }
            .card-title {
                font-size: 1.05rem;
            }
        }

        /* ===== Grid ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(11, 15, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(212, 168, 67, 0.08);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11, 15, 26, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.02em;
            transition: var(--transition);
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .nav-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--bg-deep);
            flex-shrink: 0;
        }
        .nav-logo .logo-text {
            display: inline;
        }
        @media (max-width: 520px) {
            .nav-logo .logo-text {
                font-size: 1.1rem;
            }
            .nav-logo .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
        }

        /* nav panel — 卡片化导航面板 */
        .nav-panel {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.04);
            padding: 4px 6px;
            border-radius: 60px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(4px);
        }
        .nav-panel a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-panel a i {
            font-size: 0.85rem;
            opacity: 0.6;
        }
        .nav-panel a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-panel a.active {
            color: var(--bg-deep);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 4px 16px rgba(212, 168, 67, 0.3);
        }
        .nav-panel a.active i {
            opacity: 1;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: 12px;
        }
        .nav-cta .btn {
            padding: 10px 24px;
            font-size: 0.88rem;
            border-radius: 40px;
        }

        /* Mobile toggle */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            cursor: pointer;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-light);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 900px) {
            .nav-panel {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 16px;
                right: 16px;
                background: rgba(11, 15, 26, 0.98);
                backdrop-filter: blur(20px);
                border: 1px solid rgba(212, 168, 67, 0.1);
                border-radius: var(--radius-md);
                padding: 16px;
                flex-direction: column;
                gap: 8px;
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7);
            }
            .nav-panel.open {
                display: flex;
            }
            .nav-panel a {
                width: 100%;
                padding: 12px 18px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .nav-panel a.active {
                background: rgba(212, 168, 67, 0.15);
                color: var(--primary-light);
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                width: 100%;
            }
            .nav-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
            }
        }
        @media (max-width: 520px) {
            .nav-inner {
                padding: 0 12px;
            }
            .nav-logo {
                font-size: 1.2rem;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            background: var(--bg-deep);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            z-index: 0;
            filter: saturate(1.1) brightness(0.7);
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 40%, rgba(11, 15, 26, 0.3) 0%, var(--bg-deep) 75%);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 15, 26, 0.2) 0%, var(--bg-deep) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 20px;
            border-radius: 50px;
            background: rgba(212, 168, 67, 0.1);
            border: 1px solid rgba(212, 168, 67, 0.2);
            color: var(--primary-light);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 28px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero-title {
            font-size: 3.8rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.1;
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--text-white) 30%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 580px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-stats {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 40px;
            margin-top: 48px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 75vh;
                padding: 100px 16px 60px;
            }
            .hero-title {
                font-size: 2.4rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .hero-stat-number {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                gap: 16px;
                flex-direction: column;
            }
        }

        /* ===== Feature / 特色板块 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 28px 22px;
            text-align: center;
            transition: var(--transition);
        }
        .feature-item:hover {
            border-color: rgba(212, 168, 67, 0.25);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(212, 168, 67, 0.1);
            border: 1px solid rgba(212, 168, 67, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.4rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-item:hover .feature-icon {
            background: rgba(212, 168, 67, 0.18);
            border-color: rgba(212, 168, 67, 0.3);
            transform: scale(1.05);
        }
        .feature-title {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .feature-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .feature-item {
                padding: 22px 18px;
            }
        }

        /* ===== Category Section ===== */
        .category-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(212, 168, 67, 0.3);
        }
        .category-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover img {
            transform: scale(1.04);
        }
        .category-card-body {
            padding: 20px 22px 24px;
        }
        .category-card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 6px;
        }
        .category-card-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 14px;
        }
        .category-card-body .btn {
            padding: 8px 20px;
            font-size: 0.82rem;
            border-radius: 40px;
        }
        @media (max-width: 1024px) {
            .category-cards {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .category-cards {
                grid-template-columns: 1fr;
            }
            .category-card img {
                height: 160px;
            }
        }

        /* ===== Latest Posts / 资讯列表 ===== */
        .post-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .post-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 20px 24px;
            transition: var(--transition);
        }
        .post-item:hover {
            background: var(--bg-card-hover);
            border-color: rgba(212, 168, 67, 0.2);
            transform: translateX(4px);
        }
        .post-item .post-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(212, 168, 67, 0.08);
            border: 1px solid rgba(212, 168, 67, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--primary);
            font-size: 1rem;
        }
        .post-item .post-content {
            flex: 1;
            min-width: 0;
        }
        .post-item .post-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-item .post-title a {
            color: inherit;
        }
        .post-item .post-title a:hover {
            color: var(--primary);
        }
        .post-item .post-excerpt {
            font-size: 0.88rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.6;
        }
        .post-item .post-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 8px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .post-item .post-meta .badge {
            font-size: 0.7rem;
            padding: 2px 10px;
        }
        .post-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed rgba(255, 255, 255, 0.06);
        }
        .post-empty i {
            font-size: 2rem;
            opacity: 0.3;
            margin-bottom: 12px;
            display: block;
        }
        @media (max-width: 768px) {
            .post-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px 18px;
            }
            .post-item .post-icon {
                display: none;
            }
            .post-item .post-title {
                font-size: 0.95rem;
            }
        }

        /* ===== Data / 数据板块 ===== */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .data-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .data-item:hover {
            border-color: rgba(212, 168, 67, 0.25);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .data-number {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.03em;
        }
        .data-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 6px;
        }
        @media (max-width: 1024px) {
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .data-grid {
                grid-template-columns: 1fr;
            }
            .data-number {
                font-size: 2.2rem;
            }
        }

        /* ===== Featured / 精选内容 ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .featured-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .featured-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(212, 168, 67, 0.25);
        }
        .featured-card img {
            width: 100%;
            height: 210px;
            object-fit: cover;
            transition: var(--transition);
        }
        .featured-card:hover img {
            transform: scale(1.04);
        }
        .featured-body {
            padding: 20px 22px 24px;
        }
        .featured-body .badge {
            margin-bottom: 10px;
        }
        .featured-body h3 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .featured-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .featured-card img {
                height: 180px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(212, 168, 67, 0.15);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-white);
            cursor: pointer;
            user-select: none;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question i {
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        @media (max-width: 768px) {
            .faq-question {
                padding: 14px 18px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 18px;
                font-size: 0.85rem;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(212, 168, 67, 0.06) 0%, rgba(212, 168, 67, 0.02) 100%);
            border-top: 1px solid rgba(212, 168, 67, 0.08);
            border-bottom: 1px solid rgba(212, 168, 67, 0.08);
        }
        .cta-box {
            text-align: center;
            padding: 60px 24px;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-box h2 {
            font-size: 2.2rem;
            margin-bottom: 12px;
        }
        .cta-box p {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 28px;
        }
        .cta-box .btn {
            padding: 16px 44px;
            font-size: 1.05rem;
        }
        @media (max-width: 768px) {
            .cta-box {
                padding: 40px 16px;
            }
            .cta-box h2 {
                font-size: 1.6rem;
            }
            .cta-box p {
                font-size: 0.95rem;
            }
            .cta-box .btn {
                padding: 14px 32px;
                font-size: 0.95rem;
                width: 100%;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark-alt);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 48px 24px 28px;
        }
        .footer-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
        }
        .footer-brand .nav-logo {
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            margin-bottom: 16px;
            color: var(--text-white);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            max-width: var(--container-max);
            margin: 36px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        @media (max-width: 1024px) {
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Back to top ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid rgba(212, 168, 67, 0.2);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            z-index: 900;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .back-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .back-top:hover {
            background: var(--primary);
            color: var(--bg-deep);
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(212, 168, 67, 0.3);
        }
        @media (max-width: 520px) {
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 1rem;
            }
        }

        /* ===== Section Divider ===== */
        .section-divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            border-radius: 4px;
            margin: 0 auto 24px;
        }

        /* ===== Responsive fine-tune ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .section-padding {
                padding: 60px 0;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .section-padding {
                padding: 40px 0;
            }
            .section-divider {
                width: 44px;
                margin-bottom: 18px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
            .section-padding {
                padding: 32px 0;
            }
        }

        /* ===== Focus visible ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== Selection ===== */
        ::selection {
            background: rgba(212, 168, 67, 0.3);
            color: var(--text-white);
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-deep);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(212, 168, 67, 0.2);
            border-radius: 20px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(212, 168, 67, 0.35);
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2a4a7a;
            --accent: #ffd166;
            --accent-dark: #f0b400;
            --bg-dark: #0b0e14;
            --bg-mid: #131820;
            --bg-card: #1a212e;
            --bg-card-hover: #222c3d;
            --bg-elevated: #243044;
            --text-main: #f1f3f5;
            --text-secondary: #b0b8c5;
            --text-muted: #6c7a8d;
            --text-inverse: #0b0e14;
            --border-color: #2a364a;
            --border-light: #3a4a62;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(230, 57, 70, 0.15);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== 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-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-dark);
            min-height: 100vh;
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: transparent;
            color: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-main);
        }

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            z-index: 1000;
            background: rgba(11, 14, 20, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition), border-color var(--transition);
        }

        .site-header.scrolled {
            background: rgba(11, 14, 20, 0.96);
            border-bottom-color: var(--border-light);
        }

        .nav-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: var(--header-h);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            color: var(--text-main) !important;
        }
        .nav-logo .logo-icon {
            font-size: 28px;
            color: var(--primary);
            filter: drop-shadow(0 0 8px rgba(230, 57, 70, 0.3));
        }
        .nav-logo .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, #f1f3f5 0%, #ffd166 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-panel {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
        }
        .nav-panel a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            position: relative;
        }
        .nav-panel a i {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .nav-panel a:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-panel a:hover i {
            color: var(--primary-light);
        }
        .nav-panel a.active {
            color: var(--text-main);
            background: rgba(230, 57, 70, 0.15);
        }
        .nav-panel a.active i {
            color: var(--primary);
        }
        .nav-panel a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .nav-cta {
            margin-left: 8px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            white-space: nowrap;
            line-height: 1.4;
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff !important;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.45);
            transform: translateY(-2px);
            color: #fff !important;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(230, 57, 70, 0.3);
        }
        .btn-secondary {
            background: var(--secondary);
            color: var(--text-main) !important;
            border: 1px solid var(--border-light);
        }
        .btn-secondary:hover {
            background: var(--secondary-light);
            border-color: var(--primary);
            transform: translateY(-2px);
            color: var(--text-main) !important;
        }
        .btn-outline {
            background: transparent;
            color: var(--text-main) !important;
            border: 1px solid var(--border-light);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(230, 57, 70, 0.08);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 6px 18px;
            font-size: 14px;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 18px;
            border-radius: var(--radius-md);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            background: transparent;
            border: none;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-main);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            padding: 120px 0 80px;
            background: var(--bg-mid);
            position: relative;
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.2;
            z-index: 0;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 14, 20, 0.85) 0%, rgba(19, 24, 32, 0.6) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 48px;
            font-weight: 800;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #f1f3f5 0%, #ffd166 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 720px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .page-hero .hero-meta {
            display: flex;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            margin-top: 16px;
        }
        .page-hero .hero-meta span {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 14px;
        }
        .page-hero .hero-meta i {
            color: var(--primary);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: 16px 0 0;
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary-light);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
        }
        .breadcrumb .current {
            color: var(--text-main);
            font-weight: 500;
        }

        /* ===== Sections ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-mid);
        }
        .section-dark {
            background: var(--bg-dark);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 17px;
            max-width: 640px;
            margin: 0 auto;
        }
        .section-header .badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 40px;
            background: rgba(230, 57, 70, 0.12);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 12px;
            border: 1px solid rgba(230, 57, 70, 0.2);
        }

        /* ===== Guide Cards Grid ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 28px;
        }

        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .guide-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .guide-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .guide-card:hover .card-img img {
            transform: scale(1.06);
        }
        .guide-card .card-img .tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            background: rgba(230, 57, 70, 0.9);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            border-radius: 40px;
            letter-spacing: 0.3px;
        }
        .guide-card .card-body {
            padding: 24px 28px 28px;
        }
        .guide-card .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .guide-card .card-body p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .guide-card .card-body .meta-list {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }
        .guide-card .card-body .meta-list li {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .guide-card .card-body .meta-list li i {
            color: var(--primary);
        }
        .guide-card .card-body .btn {
            margin-top: 4px;
        }

        /* ===== Featured / Highlight ===== */
        .highlight-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .highlight-row .text-col h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .highlight-row .text-col p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .highlight-row .text-col .feature-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .highlight-row .text-col .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-secondary);
            font-size: 15px;
        }
        .highlight-row .text-col .feature-list li i {
            color: var(--accent);
            margin-top: 3px;
            flex-shrink: 0;
        }
        .highlight-row .img-col img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
            border: 1px solid var(--border-color);
        }

        /* ===== Steps / Process ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 28px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }
        .step-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-card p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-item summary {
            padding: 20px 28px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            color: var(--text-main);
            list-style: none;
            transition: color var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition), color var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item summary:hover {
            color: var(--primary-light);
        }
        .faq-item .faq-answer {
            padding: 0 28px 20px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item .faq-answer a {
            color: var(--primary-light);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-mid);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-secondary);
            font-size: 18px;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
        }
        .footer-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
        }
        .footer-brand .nav-logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color var(--transition);
        }
        .footer-col ul li a i {
            font-size: 10px;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-col ul li a:hover i {
            color: var(--primary);
        }
        .footer-bottom {
            max-width: var(--container-max);
            margin: 40px auto 0;
            padding: 20px 24px;
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-secondary);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .highlight-row {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .highlight-row .img-col {
                order: -1;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .page-hero h1 {
                font-size: 38px;
            }
        }

        @media (max-width: 768px) {
            .nav-panel {
                position: fixed;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: rgba(11, 14, 20, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 6px;
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-lg);
                max-height: calc(100vh - var(--header-h));
                overflow-y: auto;
                align-items: stretch;
            }
            .nav-panel.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-panel a {
                padding: 12px 16px;
                font-size: 16px;
                border-radius: var(--radius-sm);
                justify-content: flex-start;
            }
            .nav-panel a.active::after {
                display: none;
            }
            .nav-panel .nav-cta {
                margin-left: 0;
                margin-top: 8px;
            }
            .nav-panel .nav-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
            }

            .page-hero {
                padding: 100px 0 60px;
                min-height: 300px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero p {
                font-size: 16px;
            }

            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }

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

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

            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-section h2 {
                font-size: 28px;
            }
            .cta-section .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

        @media (max-width: 520px) {
            .nav-logo .logo-text {
                font-size: 17px;
            }
            .nav-logo .logo-icon {
                font-size: 22px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .page-hero .hero-meta {
                flex-direction: column;
                gap: 8px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .guide-card .card-body {
                padding: 18px 20px 22px;
            }
            .guide-card .card-body h3 {
                font-size: 18px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .faq-item summary {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 16px;
            }
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

        /* Smooth scroll offset for anchor links with fixed header */
        .anchor-offset {
            scroll-margin-top: calc(var(--header-h) + 24px);
        }

/* roulang page: article */
/* ========== :root 设计变量 ========== */
:root {
  --primary: #0d8a3e;
  --primary-dark: #096b2f;
  --primary-light: #12b552;
  --secondary: #f5a623;
  --secondary-dark: #d48f1a;
  --accent: #e94560;
  --bg-dark: #0a0a0a;
  --bg-card: #141414;
  --bg-card-hover: #1e1e1e;
  --bg-surface: #1a1a1a;
  --bg-input: #222;
  --text-primary: #f5f5f5;
  --text-secondary: #b0b0b0;
  --text-muted: #777;
  --border-color: #2a2a2a;
  --border-light: #333;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.5);
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Fira Code', 'Consolas', monospace;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 80px;
  --max-width: 1200px;
}

/* ========== Reset & Base ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  background: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--secondary); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; border: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; letter-spacing: -0.01em; }
::selection { background: var(--primary); color: #fff; }
:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; }

/* ========== Container ========== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
@media (max-width: 768px) {
  .container { padding: 0 var(--space-md); }
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
  letter-spacing: 0.3px;
}
.btn i { font-size: 16px; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(13, 138, 62, 0.35);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(13, 138, 62, 0.45);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(13, 138, 62, 0.3); }
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-light);
}
.btn-secondary:hover {
  background: var(--bg-card);
  border-color: var(--primary);
  color: var(--primary-light);
  transform: translateY(-2px);
}
.btn-secondary:active { transform: translateY(0); }
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
}
.btn-ghost:hover { background: var(--bg-card); color: var(--text-primary); }
.btn-sm { padding: 8px 18px; font-size: 13px; border-radius: var(--radius-sm); }
.btn-lg { padding: 16px 36px; font-size: 18px; border-radius: var(--radius-lg); }

/* ========== Badge / Tag ========== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3px;
  background: rgba(13, 138, 62, 0.15);
  color: var(--primary-light);
  border: 1px solid rgba(13, 138, 62, 0.25);
}
.badge-gold {
  background: rgba(245, 166, 35, 0.15);
  color: var(--secondary);
  border-color: rgba(245, 166, 35, 0.25);
}
.badge-accent {
  background: rgba(233, 69, 96, 0.15);
  color: var(--accent);
  border-color: rgba(233, 69, 96, 0.25);
}
.badge i { font-size: 11px; }

/* ========== Section Spacing ========== */
.section { padding: var(--space-3xl) 0; }
.section-dark { background: var(--bg-card); }
.section-sm { padding: var(--space-2xl) 0; }
.section-title {
  font-size: 32px;
  margin-bottom: var(--space-sm);
  text-align: center;
  color: var(--text-primary);
}
.section-sub {
  text-align: center;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto var(--space-2xl);
  font-size: 16px;
}
@media (max-width: 768px) {
  .section { padding: var(--space-2xl) 0; }
  .section-title { font-size: 26px; }
  .section-sub { font-size: 14px; margin-bottom: var(--space-xl); }
}

/* ========== Header & Nav (卡片化导航面板) ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-color);
  padding: 0 var(--space-lg);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), #12b552);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(13, 138, 62, 0.3);
}
.nav-logo .logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}
.nav-panel {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--bg-card);
  padding: 4px 6px;
  border-radius: 40px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}
.nav-panel a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 30px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  text-decoration: none;
}
.nav-panel a i { font-size: 14px; }
.nav-panel a:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }
.nav-panel a.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 14px rgba(13, 138, 62, 0.3);
}
.nav-cta { margin-left: var(--space-sm); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle:hover span { background: var(--primary-light); }

@media (max-width: 1024px) {
  .nav-panel a { padding: 6px 14px; font-size: 13px; }
  .nav-panel a i { font-size: 12px; }
}
@media (max-width: 768px) {
  .site-header { padding: 0 var(--space-md); }
  .nav-panel {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(10,10,10,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--space-lg);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    border: none;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    gap: var(--space-sm);
  }
  .nav-panel.open { display: flex; }
  .nav-panel a {
    width: 100%;
    justify-content: center;
    padding: 12px 20px;
    font-size: 15px;
    border-radius: var(--radius-md);
  }
  .nav-cta { margin-left: 0; width: 100; margin-top: var(--space-sm); }
  .nav-cta .btn { width: 100%; justify-content: center; }
  .nav-toggle { display: flex; }
}

/* ========== Hero / Article Banner ========== */
.article-hero {
  position: relative;
  padding: 120px 0 60px;
  background: linear-gradient(135deg, rgba(10,10,10,0.92), rgba(10,10,10,0.7)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}
.article-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--bg-dark), transparent);
  pointer-events: none;
}
.article-hero .container {
  position: relative;
  z-index: 2;
}
.hero-bread {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}
.hero-bread a { color: var(--text-secondary); }
.hero-bread a:hover { color: var(--primary-light); }
.hero-bread span { color: var(--text-muted); }
.hero-bread .sep { color: var(--border-light); }
.article-hero .hero-category {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: var(--space-md);
}
.article-hero h1 {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  max-width: 860px;
  margin-bottom: var(--space-md);
  letter-spacing: -0.5px;
}
.article-hero .hero-meta {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  color: var(--text-secondary);
  font-size: 14px;
  flex-wrap: wrap;
}
.article-hero .hero-meta i { color: var(--primary-light); margin-right: 4px; }
@media (max-width: 768px) {
  .article-hero { padding: 100px 0 40px; }
  .article-hero h1 { font-size: 28px; }
  .article-hero .hero-meta { gap: var(--space-md); font-size: 13px; }
}

/* ========== Article Content ========== */
.article-body {
  padding: var(--space-2xl) 0 var(--space-3xl);
}
.article-content {
  max-width: 820px;
  margin: 0 auto;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-xl);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}
.article-content p {
  margin-bottom: var(--space-lg);
  color: var(--text-secondary);
  line-height: 1.9;
  font-size: 16px;
}
.article-content h2 {
  font-size: 26px;
  color: var(--text-primary);
  margin: var(--space-xl) 0 var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--border-color);
}
.article-content h3 {
  font-size: 20px;
  color: var(--text-primary);
  margin: var(--space-lg) 0 var(--space-sm);
}
.article-content img {
  border-radius: var(--radius-md);
  margin: var(--space-lg) auto;
  box-shadow: var(--shadow-sm);
  max-width: 100%;
}
.article-content ul, .article-content ol {
  margin: var(--space-md) 0 var(--space-lg) var(--space-lg);
  color: var(--text-secondary);
}
.article-content li { margin-bottom: var(--space-sm); }
.article-content ul li::before {
  content: '●';
  color: var(--primary-light);
  font-weight: bold;
  display: inline-block;
  width: 1.2em;
  margin-left: -1.2em;
}
.article-content a { color: var(--primary-light); text-decoration: underline; }
.article-content a:hover { color: var(--secondary); }
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: rgba(13,138,62,0.08);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-lg) 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}
.article-content .content-img-wrap {
  display: flex;
  justify-content: center;
  margin: var(--space-lg) 0;
}
.article-tags {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-color);
}
.article-tags .label { color: var(--text-muted); font-size: 13px; }
.article-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-color);
}
.article-nav a {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 20px;
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: var(--transition);
  max-width: 48%;
}
.article-nav a:hover {
  border-color: var(--primary);
  color: var(--text-primary);
  transform: translateY(-2px);
}
.article-nav .nav-next { text-align: right; flex-direction: row-reverse; }
@media (max-width: 768px) {
  .article-content { padding: var(--space-lg) var(--space-md); }
  .article-content p { font-size: 15px; }
  .article-content h2 { font-size: 22px; }
  .article-nav { flex-direction: column; }
  .article-nav a { max-width: 100%; }
}

/* ========== Related Posts ========== */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}
.related-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}
.related-card .card-img {
  aspect-ratio: 16/9;
  background: var(--bg-surface);
  overflow: hidden;
}
.related-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}
.related-card:hover .card-img img { transform: scale(1.05); }
.related-card .card-body {
  padding: var(--space-md) var(--space-lg) var(--space-lg);
}
.related-card .card-body h3 {
  font-size: 16px;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card .card-body p {
  font-size: 13px;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card .card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  font-size: 12px;
  color: var(--text-muted);
}
@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .related-grid { grid-template-columns: 1fr; }
}

/* ========== CTA Section ========== */
.cta-section {
  background: linear-gradient(135deg, rgba(13,138,62,0.12), rgba(10,10,10,0.95)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  padding: var(--space-3xl) 0;
  text-align: center;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.cta-section h2 {
  font-size: 34px;
  color: #fff;
  margin-bottom: var(--space-md);
}
.cta-section p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  font-size: 16px;
}
.cta-btns {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}
@media (max-width: 768px) {
  .cta-section h2 { font-size: 26px; }
  .cta-section p { font-size: 14px; }
}

/* ========== FAQ ========== */
.faq-grid {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--border-light); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
  background: transparent;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
  border: none;
}
.faq-question i { color: var(--primary-light); transition: var(--transition); font-size: 14px; }
.faq-question:hover { background: rgba(255,255,255,0.02); }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 var(--space-xl);
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 var(--space-xl) var(--space-lg);
}
@media (max-width: 768px) {
  .faq-question { padding: var(--space-md) var(--space-lg); font-size: 14px; }
  .faq-answer { padding: 0 var(--space-lg); font-size: 14px; }
  .faq-item.active .faq-answer { padding: 0 var(--space-lg) var(--space-md); }
}

/* ========== Error State ========== */
.error-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  max-width: 600px;
  margin: 0 auto;
}
.error-state .error-icon {
  font-size: 64px;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}
.error-state h2 {
  font-size: 28px;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}
.error-state p {
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  font-size: 16px;
}
.error-state .btn { margin: 0 auto; }

/* ========== Footer ========== */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: var(--space-3xl) 0 0;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
}
.footer-brand .nav-logo { margin-bottom: var(--space-md); }
.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  margin-top: var(--space-sm);
}
.footer-col h4 {
  font-size: 15px;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  font-weight: 600;
}
.footer-col ul li { margin-bottom: var(--space-sm); }
.footer-col ul li a {
  color: var(--text-muted);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.footer-col ul li a i { font-size: 10px; color: var(--primary-light); }
.footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-bottom {
  margin-top: var(--space-2xl);
  padding: var(--space-lg) var(--space-lg);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: 13px;
  color: var(--text-muted);
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary-light); }
@media (max-width: 1024px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: var(--space-xl); }
}
@media (max-width: 640px) {
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-brand .nav-logo { justify-content: center; }
  .footer-col ul li a { justify-content: center; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ========== Animation ========== */
.fade-in { animation: fadeIn 0.6s ease forwards; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

/* ========== Scrollbar ========== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }

/* ========== Utility ========== */
.text-center { text-align: center; }
.mt-1 { margin-top: var(--space-md); }
.mt-2 { margin-top: var(--space-xl); }
.mb-1 { margin-bottom: var(--space-md); }
.mb-2 { margin-bottom: var(--space-xl); }
.gap-1 { gap: var(--space-md); }
.gap-2 { gap: var(--space-xl); }