/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0b0f2a;
            --primary-light: #161c3d;
            --primary-lighter: #1f2650;
            --accent: #d4a853;
            --accent-light: #f0c85a;
            --accent-dark: #b8923e;
            --accent-glow: rgba(212, 168, 83, 0.25);
            --bg-dark: #0b0f2a;
            --bg-dark-alt: #101536;
            --bg-light: #f5f6fb;
            --bg-card: #ffffff;
            --bg-glass: rgba(255, 255, 255, 0.06);
            --bg-glass-hover: rgba(255, 255, 255, 0.10);
            --text-primary: #1a1f3a;
            --text-secondary: #4a4f6e;
            --text-light: #8a8fa8;
            --text-white: #ffffff;
            --text-accent: #d4a853;
            --border-color: rgba(212, 168, 83, 0.18);
            --border-light: rgba(255, 255, 255, 0.08);
            --border-radius-sm: 8px;
            --border-radius-md: 14px;
            --border-radius-lg: 24px;
            --shadow-sm: 0 2px 12px rgba(11, 15, 42, 0.06);
            --shadow-md: 0 8px 32px rgba(11, 15, 42, 0.10);
            --shadow-lg: 0 24px 64px rgba(11, 15, 42, 0.14);
            --shadow-glow: 0 0 40px rgba(212, 168, 83, 0.15);
            --shadow-accent: 0 4px 20px rgba(212, 168, 83, 0.30);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;
            --space-2xl: 8rem;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 基础重置 ===== */
        *,
        *::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: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
        }

        a {
            color: var(--accent-dark);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
            text-decoration: none;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

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

        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        .container-narrow {
            max-width: 900px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(11, 15, 42, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .site-header .navbar {
            padding-top: 0.7rem;
            padding-bottom: 0.7rem;
        }

        .site-header .navbar-brand {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.5px;
            padding: 0;
            margin: 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .site-header .navbar-brand i {
            color: var(--accent);
            font-size: 1.5rem;
        }
        .site-header .navbar-brand:hover {
            color: var(--accent-light);
        }

        .site-header .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 1.1rem;
            border-radius: var(--border-radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .site-header .navbar-nav .nav-link:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .site-header .navbar-nav .nav-link.active {
            color: var(--accent);
            background: rgba(212, 168, 83, 0.10);
        }
        .site-header .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 1.1rem;
            right: 1.1rem;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-cta-btn {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary) !important;
            font-weight: 600 !important;
            padding: 0.5rem 1.5rem !important;
            border-radius: var(--border-radius-sm) !important;
            transition: var(--transition);
            box-shadow: var(--shadow-accent);
        }
        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(212, 168, 83, 0.40);
            color: var(--primary) !important;
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.20);
            padding: 0.4rem 0.6rem;
            border-radius: var(--border-radius-sm);
            color: var(--text-white);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px var(--accent-glow);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== Hero 分屏 ===== */
        .hero-split {
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
            padding-top: 80px;
        }

        .hero-split::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 20% 50%, rgba(212, 168, 83, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 30%, rgba(11, 15, 42, 0.8) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 80%, rgba(212, 168, 83, 0.03) 0%, transparent 50%);
            pointer-events: none;
        }

        .hero-stars {
            position: absolute;
            inset: 0;
            overflow: hidden;
            pointer-events: none;
        }
        .hero-stars span {
            position: absolute;
            width: 3px;
            height: 3px;
            background: rgba(255, 255, 255, 0.6);
            border-radius: 50%;
            animation: twinkle 4s ease-in-out infinite alternate;
        }
        .hero-stars span:nth-child(1) {
            top: 12%;
            left: 8%;
            width: 2px;
            height: 2px;
            animation-delay: 0s;
        }
        .hero-stars span:nth-child(2) {
            top: 25%;
            left: 75%;
            width: 4px;
            height: 4px;
            animation-delay: 0.8s;
        }
        .hero-stars span:nth-child(3) {
            top: 55%;
            left: 15%;
            width: 2px;
            height: 2px;
            animation-delay: 1.6s;
        }
        .hero-stars span:nth-child(4) {
            top: 70%;
            left: 85%;
            width: 3px;
            height: 3px;
            animation-delay: 0.4s;
        }
        .hero-stars span:nth-child(5) {
            top: 40%;
            left: 45%;
            width: 2px;
            height: 2px;
            animation-delay: 2.2s;
        }
        .hero-stars span:nth-child(6) {
            top: 85%;
            left: 30%;
            width: 3px;
            height: 3px;
            animation-delay: 1.2s;
        }
        .hero-stars span:nth-child(7) {
            top: 15%;
            left: 55%;
            width: 2px;
            height: 2px;
            animation-delay: 2.8s;
        }
        .hero-stars span:nth-child(8) {
            top: 65%;
            left: 5%;
            width: 4px;
            height: 4px;
            animation-delay: 0.6s;
        }

        @keyframes twinkle {
            0% {
                opacity: 0.2;
                transform: scale(0.8);
            }
            100% {
                opacity: 1;
                transform: scale(1.2);
            }
        }

        .hero-split .hero-content {
            position: relative;
            z-index: 2;
            padding: var(--space-xl) 0;
        }

        .hero-split .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(212, 168, 83, 0.12);
            border: 1px solid rgba(212, 168, 83, 0.25);
            border-radius: 50px;
            padding: 0.4rem 1.2rem 0.4rem 1rem;
            color: var(--accent-light);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.3px;
            margin-bottom: 1.5rem;
            backdrop-filter: blur(4px);
        }
        .hero-split .hero-badge i {
            font-size: 0.75rem;
        }

        .hero-split .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1.15;
            color: var(--text-white);
            margin-bottom: 1.2rem;
            letter-spacing: -0.5px;
        }
        .hero-split .hero-title span {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-split .hero-desc {
            font-size: 1.15rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            max-width: 520px;
            margin-bottom: 2.2rem;
        }

        .hero-split .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary);
            font-weight: 600;
            padding: 0.75rem 2.2rem;
            border-radius: var(--border-radius-sm);
            border: none;
            transition: var(--transition);
            box-shadow: var(--shadow-accent);
            font-size: 1rem;
        }
        .btn-accent:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(212, 168, 83, 0.40);
            color: var(--primary);
        }
        .btn-accent:active {
            transform: translateY(-1px);
        }

        .btn-outline-light-custom {
            background: transparent;
            color: var(--text-white);
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            padding: 0.75rem 2rem;
            border-radius: var(--border-radius-sm);
            font-weight: 500;
            transition: var(--transition);
        }
        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.40);
            color: var(--text-white);
            transform: translateY(-2px);
        }

        .hero-split .hero-visual {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: var(--space-lg) 0;
        }

        .hero-visual-ring {
            width: 420px;
            height: 420px;
            border-radius: 50%;
            border: 1px solid rgba(212, 168, 83, 0.15);
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            animation: rotateSlow 40s linear infinite;
        }
        .hero-visual-ring-inner {
            width: 300px;
            height: 300px;
            border-radius: 50%;
            border: 1px solid rgba(212, 168, 83, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            animation: rotateSlow 30s linear infinite reverse;
        }
        .hero-visual-icon {
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: radial-gradient(circle at 30% 30%, rgba(212, 168, 83, 0.15), rgba(11, 15, 42, 0.9));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 4rem;
            color: var(--accent);
            box-shadow: 0 0 60px rgba(212, 168, 83, 0.10);
            border: 1px solid rgba(212, 168, 83, 0.12);
        }

        @keyframes rotateSlow {
            0% {
                transform: rotate(0deg);
            }
            100% {
                transform: rotate(360deg);
            }
        }

        .hero-visual-ring::before,
        .hero-visual-ring::after {
            content: '';
            position: absolute;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 20px rgba(212, 168, 83, 0.5);
            animation: orbitDot 6s ease-in-out infinite alternate;
        }
        .hero-visual-ring::before {
            top: -6px;
            left: 50%;
            transform: translateX(-50%);
        }
        .hero-visual-ring::after {
            bottom: -6px;
            left: 50%;
            transform: translateX(-50%);
            animation-delay: 3s;
        }

        @keyframes orbitDot {
            0% {
                opacity: 0.3;
                transform: translateX(-50%) scale(0.7);
            }
            100% {
                opacity: 1;
                transform: translateX(-50%) scale(1.2);
            }
        }

        /* ===== 通用板块 ===== */
        .section-padding {
            padding: var(--space-2xl) 0;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
            letter-spacing: -0.3px;
        }
        .section-title-light {
            color: var(--text-white);
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 2.5rem;
            line-height: 1.7;
        }
        .section-subtitle-light {
            color: rgba(255, 255, 255, 0.65);
        }

        .section-divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            border-radius: 3px;
            margin: 0 auto 1.5rem;
        }

        /* ===== 卡片通用 ===== */
        .card-custom {
            background: var(--bg-card);
            border: none;
            border-radius: var(--border-radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .card-custom-dark {
            background: var(--primary-light);
            border: 1px solid var(--border-light);
        }
        .card-custom-dark:hover {
            background: var(--primary-lighter);
            border-color: rgba(212, 168, 83, 0.20);
        }

        .card-custom .card-body {
            padding: 1.8rem;
        }

        /* ===== 特色卡片 ===== */
        .feature-card {
            text-align: center;
            padding: 2.2rem 1.8rem;
            border-radius: var(--border-radius-md);
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid rgba(212, 168, 83, 0.06);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
            border-color: var(--border-color);
        }
        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: var(--border-radius-md);
            background: linear-gradient(135deg, rgba(212, 168, 83, 0.12), rgba(212, 168, 83, 0.04));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.2rem;
            font-size: 1.6rem;
            color: var(--accent-dark);
            transition: var(--transition);
        }
        .feature-card:hover .icon-wrap {
            background: linear-gradient(135deg, rgba(212, 168, 83, 0.20), rgba(212, 168, 83, 0.08));
            transform: scale(1.05);
        }
        .feature-card h5 {
            font-weight: 600;
            font-size: 1.15rem;
            margin-bottom: 0.6rem;
            color: var(--text-primary);
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 分类入口卡片 ===== */
        .category-card {
            position: relative;
            border-radius: var(--border-radius-md);
            overflow: hidden;
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid rgba(212, 168, 83, 0.06);
            height: 100%;
        }
        .category-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-5px);
            border-color: var(--border-color);
        }
        .category-card .cat-img {
            height: 180px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: var(--text-white);
            position: relative;
        }
        .category-card .cat-img-1 {
            background: linear-gradient(135deg, #1a1f3a, #2a2f5a);
        }
        .category-card .cat-img-2 {
            background: linear-gradient(135deg, #1a1f3a, #3a2a1a);
        }
        .category-card .cat-img .overlay-icon {
            position: relative;
            z-index: 1;
        }
        .category-card .cat-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(212, 168, 83, 0.08), transparent 70%);
        }
        .category-card .cat-body {
            padding: 1.5rem 1.5rem 1.8rem;
        }
        .category-card .cat-body h5 {
            font-weight: 600;
            font-size: 1.15rem;
            margin-bottom: 0.4rem;
        }
        .category-card .cat-body p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 0.8rem;
            line-height: 1.6;
        }
        .category-card .cat-body .cat-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 500;
            color: var(--accent-dark);
            background: rgba(212, 168, 83, 0.10);
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
        }

        /* ===== 文章/资讯列表 ===== */
        .post-item {
            display: flex;
            gap: 1.5rem;
            padding: 1.5rem 0;
            border-bottom: 1px solid rgba(212, 168, 83, 0.08);
            transition: var(--transition);
        }
        .post-item:last-child {
            border-bottom: none;
        }
        .post-item:hover {
            padding-left: 0.5rem;
        }
        .post-item .post-meta {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            font-size: 0.82rem;
            color: var(--text-light);
            margin-bottom: 0.3rem;
        }
        .post-item .post-meta .post-cat {
            background: rgba(212, 168, 83, 0.10);
            color: var(--accent-dark);
            padding: 0.15rem 0.7rem;
            border-radius: 50px;
            font-weight: 500;
        }
        .post-item .post-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.3rem;
            transition: var(--transition);
            display: block;
        }
        .post-item .post-title:hover {
            color: var(--accent-dark);
        }
        .post-item .post-excerpt {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .post-item .post-date {
            font-size: 0.82rem;
            color: var(--text-light);
            white-space: nowrap;
        }

        .post-list-empty {
            text-align: center;
            padding: 3rem 1rem;
            color: var(--text-light);
            font-size: 1rem;
        }
        .post-list-empty i {
            font-size: 2rem;
            display: block;
            margin-bottom: 0.8rem;
            opacity: 0.4;
        }

        /* ===== 数据/统计 ===== */
        .stat-item {
            text-align: center;
            padding: 1.5rem;
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 0.3rem;
        }

        /* ===== 流程步骤 ===== */
        .step-item {
            text-align: center;
            padding: 1.5rem 1rem;
            position: relative;
        }
        .step-item .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary);
            font-weight: 700;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            box-shadow: var(--shadow-accent);
        }
        .step-item h6 {
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 0.4rem;
            color: var(--text-white);
        }
        .step-item p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .step-connector {
            display: none;
        }
        @media (min-width: 768px) {
            .step-connector {
                display: block;
                position: absolute;
                top: 2.5rem;
                right: -1.5rem;
                width: 3rem;
                height: 2px;
                background: linear-gradient(90deg, var(--accent), transparent);
                opacity: 0.3;
            }
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--border-radius-md);
            box-shadow: var(--shadow-sm);
            margin-bottom: 1rem;
            overflow: hidden;
            border: 1px solid rgba(212, 168, 83, 0.06);
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border-color);
        }
        .faq-question {
            padding: 1.2rem 1.8rem;
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--accent-dark);
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--accent);
            font-size: 0.9rem;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 1.8rem 1.2rem;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 30% 50%, rgba(212, 168, 83, 0.06), transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(212, 168, 83, 0.03), transparent 50%);
            pointer-events: none;
        }
        .cta-section .cta-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.8rem;
        }
        .cta-section .cta-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.65);
            max-width: 560px;
            margin: 0 auto 1.8rem;
            line-height: 1.7;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-light);
            padding: var(--space-lg) 0 var(--space-md);
        }
        .site-footer .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.8rem;
        }
        .site-footer .footer-brand i {
            color: var(--accent);
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem 1.5rem;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
        }
        .site-footer .footer-social {
            display: flex;
            gap: 0.8rem;
        }
        .site-footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
            font-size: 1rem;
        }
        .site-footer .footer-social a:hover {
            background: rgba(212, 168, 83, 0.15);
            color: var(--accent);
            transform: translateY(-3px);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 1.5rem;
            margin-top: 2rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 徽章 / 标签 ===== */
        .badge-custom {
            display: inline-block;
            font-weight: 500;
            font-size: 0.78rem;
            padding: 0.25rem 0.9rem;
            border-radius: 50px;
            background: rgba(212, 168, 83, 0.10);
            color: var(--accent-dark);
        }

        /* ===== 按钮大小变体 ===== */
        .btn-sm-custom {
            padding: 0.45rem 1.2rem;
            font-size: 0.85rem;
        }
        .btn-lg-custom {
            padding: 0.9rem 2.6rem;
            font-size: 1.05rem;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-split .hero-title {
                font-size: 2.8rem;
            }
            .hero-visual-ring {
                width: 320px;
                height: 320px;
            }
            .hero-visual-ring-inner {
                width: 220px;
                height: 220px;
            }
            .hero-visual-icon {
                width: 120px;
                height: 120px;
                font-size: 3rem;
            }
            .section-title {
                font-size: 1.9rem;
            }
        }

        @media (max-width: 768px) {
            .hero-split {
                min-height: auto;
                padding-top: 100px;
                padding-bottom: var(--space-lg);
                text-align: center;
            }
            .hero-split .hero-content {
                padding: var(--space-md) 0;
            }
            .hero-split .hero-desc {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-split .hero-actions {
                justify-content: center;
            }
            .hero-split .hero-title {
                font-size: 2.2rem;
            }
            .hero-visual-ring {
                width: 240px;
                height: 240px;
            }
            .hero-visual-ring-inner {
                width: 160px;
                height: 160px;
            }
            .hero-visual-icon {
                width: 80px;
                height: 80px;
                font-size: 2.2rem;
            }
            .hero-split .hero-visual {
                padding: var(--space-md) 0 var(--space-sm);
            }
            .section-padding {
                padding: var(--space-lg) 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
            .feature-card {
                padding: 1.8rem 1.2rem;
            }
            .post-item {
                flex-direction: column;
                gap: 0.6rem;
                padding: 1.2rem 0;
            }
            .post-item .post-date {
                white-space: normal;
            }
            .cta-section .cta-title {
                font-size: 1.6rem;
            }
            .stat-item .stat-number {
                font-size: 2.2rem;
            }
            .site-footer .footer-links {
                justify-content: center;
            }
            .site-footer .footer-social {
                justify-content: center;
                margin-top: 1rem;
            }
            .site-footer .footer-desc {
                max-width: 100%;
            }
            .navbar-brand {
                font-size: 1.1rem !important;
            }
            .navbar-brand span {
                font-size: 0.9rem;
            }
            .step-item {
                padding: 1rem 0.5rem;
            }
        }

        @media (max-width: 520px) {
            .hero-split .hero-title {
                font-size: 1.8rem;
            }
            .hero-split .hero-desc {
                font-size: 0.95rem;
            }
            .hero-visual-ring {
                width: 180px;
                height: 180px;
            }
            .hero-visual-ring-inner {
                width: 120px;
                height: 120px;
            }
            .hero-visual-icon {
                width: 60px;
                height: 60px;
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .btn-accent,
            .btn-outline-light-custom {
                padding: 0.6rem 1.4rem;
                font-size: 0.9rem;
            }
            .card-custom .card-body {
                padding: 1.2rem;
            }
            .faq-question {
                padding: 1rem 1.2rem;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 1.2rem 1rem;
                font-size: 0.9rem;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* ===== 辅助 ===== */
        .text-accent {
            color: var(--accent-dark);
        }
        .text-accent-light {
            color: var(--accent-light);
        }
        .bg-dark-section {
            background: var(--bg-dark);
        }
        .bg-dark-alt-section {
            background: var(--bg-dark-alt);
        }
        .bg-light-section {
            background: var(--bg-light);
        }

        .mt- section {
            margin-top: var(--space-lg);
        }

        .overflow-hidden {
            overflow: hidden;
        }

        /* 图片占位圆角 */
        .img-placeholder {
            border-radius: var(--border-radius-sm);
        }

        /* 分隔线装饰 */
        .divider-accent {
            border: none;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
            opacity: 0.2;
            margin: var(--space-lg) 0;
        }

        /* 卡片网格间距 */
        .grid-gap {
            gap: 1.8rem;
        }
        @media (max-width: 768px) {
            .grid-gap {
                gap: 1.2rem;
            }
        }

        /* Bootstrap 覆盖：按钮无默认圆角过小 */
        .btn {
            border-radius: var(--border-radius-sm);
        }
        .btn-primary {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--primary);
            font-weight: 600;
        }
        .btn-primary:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            color: var(--primary);
        }
        .btn-outline-primary {
            border-color: var(--accent);
            color: var(--accent);
        }
        .btn-outline-primary:hover {
            background: var(--accent);
            color: var(--primary);
        }

        /* 滚动条 */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--accent-dark);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--accent);
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --primary-dark: #0f0f1a;
            --accent: #e94560;
            --accent-hover: #d63850;
            --accent-light: #ff6b81;
            --gold: #f5a623;
            --gold-light: #ffd369;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-card-hover: #222240;
            --bg-section: #12121f;
            --bg-light: #f8f9fc;
            --text-white: #ffffff;
            --text-light: #e0e0e8;
            --text-muted: #9a9ab0;
            --text-dark: #2d2d3f;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-light: #e8e8f0;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(233, 69, 96, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== 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);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            font-size: 1rem;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ::selection {
            background: var(--accent);
            color: #fff;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Typography ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-white);
            letter-spacing: -0.02em;
        }
        h1 {
            font-size: clamp(2rem, 5vw, 3.5rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.6rem);
            margin-bottom: 1rem;
        }
        h3 {
            font-size: clamp(1.2rem, 2.2vw, 1.6rem);
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 2.5rem auto;
            text-align: center;
        }
        .section-label {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--accent);
            background: rgba(233, 69, 96, 0.12);
            padding: 0.3rem 1rem;
            border-radius: 50px;
            margin-bottom: 0.75rem;
            border: 1px solid rgba(233, 69, 96, 0.2);
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(18px) saturate(1.4);
            -webkit-backdrop-filter: blur(18px) saturate(1.4);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-height);
        }
        .site-header .navbar {
            padding: 0;
            height: 100%;
        }
        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-white);
            letter-spacing: -0.3px;
            padding: 0;
        }
        .site-header .navbar-brand i {
            color: var(--gold);
            font-size: 1.4rem;
        }
        .site-header .navbar-brand:hover {
            color: var(--gold-light);
        }
        .site-header .navbar-nav .nav-link {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .site-header .navbar-nav .nav-link:hover,
        .site-header .navbar-nav .nav-link:focus {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.05);
        }
        .site-header .navbar-nav .nav-link.active {
            color: var(--accent);
            background: rgba(233, 69, 96, 0.08);
        }
        .site-header .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-cta-btn {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 0.45rem 1.4rem;
            font-weight: 600;
            font-size: 0.85rem;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(233, 69, 96, 0.25);
        }
        .nav-cta-btn:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 24px rgba(233, 69, 96, 0.35);
        }
        .navbar-toggler {
            border: none;
            padding: 0.4rem 0.6rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-sm);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.3);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                background: var(--bg-card);
                padding: 1rem 1.25rem;
                border-radius: var(--radius-md);
                margin-top: 0.5rem;
                border: 1px solid var(--border-color);
                box-shadow: var(--shadow-lg);
            }
            .site-header .navbar-nav .nav-link {
                padding: 0.6rem 0.8rem;
            }
            .site-header .navbar-nav .nav-link.active::after {
                display: none;
            }
            .nav-cta-btn {
                width: 100%;
                text-align: center;
                margin-top: 0.5rem;
            }
        }
        @media (max-width: 576px) {
            :root {
                --header-height: 62px;
            }
            .site-header .navbar-brand {
                font-size: 1.1rem;
            }
            .site-header .navbar-brand i {
                font-size: 1.2rem;
            }
        }

        /* ===== Hero ===== */
        .page-hero {
            padding: 6rem 0 4rem 0;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-light) 50%, var(--bg-dark) 100%);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(233, 69, 96, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(245, 166, 35, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(233, 69, 96, 0.1);
            border: 1px solid rgba(233, 69, 96, 0.2);
            padding: 0.35rem 1.2rem;
            border-radius: 50px;
            color: var(--accent);
            font-size: 0.82rem;
            font-weight: 600;
            margin-bottom: 1.2rem;
        }
        .page-hero .hero-badge i {
            font-size: 0.75rem;
        }
        .page-hero h1 {
            font-size: clamp(2rem, 4.5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 1rem;
        }
        .page-hero h1 span {
            background: linear-gradient(135deg, var(--gold), var(--gold-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero .hero-lead {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 620px;
            line-height: 1.7;
        }
        .page-hero .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
            margin-top: 2.5rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border-color);
        }
        .page-hero .hero-stats .stat-item {
            text-align: left;
        }
        .page-hero .hero-stats .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .page-hero .hero-stats .stat-number i {
            color: var(--gold);
            font-size: 1.2rem;
            margin-right: 0.3rem;
        }
        .page-hero .hero-stats .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.15rem;
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 4rem 0 3rem 0;
            }
            .page-hero .hero-stats {
                gap: 1.5rem;
            }
            .page-hero .hero-stats .stat-number {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 576px) {
            .page-hero .hero-stats {
                gap: 1.2rem;
                flex-direction: column;
            }
        }

        /* ===== Section spacing ===== */
        .section-padding {
            padding: 5rem 0;
        }
        .section-padding-sm {
            padding: 3rem 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 3.5rem 0;
            }
            .section-padding-sm {
                padding: 2rem 0;
            }
        }

        /* ===== Section backgrounds ===== */
        .section-dark {
            background: var(--bg-section);
        }
        .section-card-bg {
            background: var(--bg-card);
        }
        .section-gradient {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-light) 100%);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding: 1rem 0 0 0;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .breadcrumb-wrap a {
            color: var(--text-muted);
        }
        .breadcrumb-wrap a:hover {
            color: var(--accent);
        }
        .breadcrumb-wrap .sep {
            margin: 0 0.5rem;
            opacity: 0.4;
        }
        .breadcrumb-wrap .current {
            color: var(--text-light);
        }

        /* ===== Cards ===== */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.8rem 1.5rem;
            transition: var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            background: var(--bg-card-hover);
            border-color: rgba(233, 69, 96, 0.2);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .card-custom .card-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            font-size: 1.4rem;
            margin-bottom: 1.2rem;
            background: rgba(233, 69, 96, 0.1);
            color: var(--accent);
            border: 1px solid rgba(233, 69, 96, 0.15);
        }
        .card-custom .card-icon.gold {
            background: rgba(245, 166, 35, 0.1);
            color: var(--gold);
            border-color: rgba(245, 166, 35, 0.2);
        }
        .card-custom .card-icon.teal {
            background: rgba(0, 206, 209, 0.1);
            color: #00ced1;
            border-color: rgba(0, 206, 209, 0.2);
        }
        .card-custom .card-icon.purple {
            background: rgba(170, 120, 255, 0.1);
            color: #aa78ff;
            border-color: rgba(170, 120, 255, 0.2);
        }
        .card-custom h3 {
            font-size: 1.15rem;
            margin-bottom: 0.6rem;
        }
        .card-custom p {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin-bottom: 0.8rem;
        }
        .card-custom .card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            margin-top: 0.5rem;
        }
        .card-custom .card-tag.recommend {
            background: rgba(233, 69, 96, 0.15);
            color: var(--accent);
            border-color: rgba(233, 69, 96, 0.2);
        }

        /* ===== Steps / Timeline ===== */
        .step-list {
            list-style: none;
            padding: 0;
            margin: 0;
            position: relative;
        }
        .step-list::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 20px;
            width: 2px;
            background: var(--border-color);
        }
        .step-list li {
            display: flex;
            gap: 1.5rem;
            padding-bottom: 2.2rem;
            position: relative;
        }
        .step-list li:last-child {
            padding-bottom: 0;
        }
        .step-list .step-num {
            width: 42px;
            height: 42px;
            flex-shrink: 0;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            background: var(--accent);
            color: #fff;
            position: relative;
            z-index: 2;
            box-shadow: 0 0 0 4px var(--bg-dark);
        }
        .step-list .step-num.gold {
            background: var(--gold);
            color: #1a1a2e;
        }
        .step-list .step-content h4 {
            font-size: 1.05rem;
            margin-bottom: 0.3rem;
            color: var(--text-white);
        }
        .step-list .step-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
        }
        @media (max-width: 576px) {
            .step-list li {
                gap: 1rem;
            }
            .step-list .step-num {
                width: 36px;
                height: 36px;
                font-size: 0.85rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.4rem 1.8rem;
            margin-bottom: 0.8rem;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: rgba(233, 69, 96, 0.15);
            background: var(--bg-card-hover);
        }
        .faq-item .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: var(--text-white);
            font-size: 1rem;
            gap: 1rem;
        }
        .faq-item .faq-q i {
            color: var(--accent);
            transition: var(--transition);
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .faq-item .faq-a {
            margin-top: 0.8rem;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            display: none;
            border-top: 1px solid var(--border-color);
            padding-top: 0.8rem;
        }
        .faq-item.open .faq-a {
            display: block;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }

        /* ===== Security Tips ===== */
        .tip-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 0.8rem;
        }
        .tip-list li {
            display: flex;
            gap: 0.8rem;
            align-items: flex-start;
            padding: 1rem 1.2rem;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            font-size: 0.92rem;
            color: var(--text-light);
        }
        .tip-list li i {
            color: var(--gold);
            font-size: 1rem;
            margin-top: 0.15rem;
            flex-shrink: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 3.5rem 3rem;
            border: 1px solid var(--border-color);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(233, 69, 96, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 1.8rem auto;
            font-size: 1rem;
        }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: var(--accent);
            color: #fff;
            padding: 0.75rem 2.2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(233, 69, 96, 0.3);
        }
        .cta-section .cta-btn:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(233, 69, 96, 0.4);
            color: #fff;
        }
        .cta-section .cta-btn i {
            font-size: 0.9rem;
        }
        .cta-section .cta-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 1rem;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 2.5rem 1.5rem;
            }
        }

        /* ===== Related Articles ===== */
        .article-item {
            display: flex;
            gap: 1.2rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-item:last-child {
            border-bottom: none;
        }
        .article-item:hover {
            padding-left: 0.5rem;
        }
        .article-item .article-icon {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            border-radius: var(--radius-sm);
            background: rgba(233, 69, 96, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1rem;
        }
        .article-item .article-info h4 {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 0.15rem;
        }
        .article-item .article-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }
        .article-item .article-info .article-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
            opacity: 0.7;
            margin-top: 0.2rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 3.5rem 0 2rem 0;
            margin-top: 2rem;
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .site-footer .footer-brand i {
            color: var(--gold);
        }
        .site-footer .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            max-width: 360px;
            line-height: 1.7;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .site-footer .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 1rem;
            margin-top: 0.5rem;
        }
        .site-footer .footer-social a {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            font-size: 1.2rem;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            transform: translateY(-2px);
        }
        .site-footer .footer-bottom {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .site-footer .footer-bottom a {
            color: var(--text-muted);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .site-footer {
                padding: 2.5rem 0 1.5rem 0;
            }
            .site-footer .footer-brand {
                font-size: 1.1rem;
            }
            .site-footer .footer-desc {
                max-width: 100%;
            }
            .site-footer .footer-links {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 0.8rem 1.5rem;
            }
        }

        /* ===== Buttons ===== */
        .btn-outline-accent {
            border: 1.5px solid var(--accent);
            color: var(--accent);
            background: transparent;
            border-radius: 50px;
            padding: 0.5rem 1.5rem;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .btn-outline-accent:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(233, 69, 96, 0.2);
        }

        /* ===== Divider ===== */
        .divider-gradient {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
            opacity: 0.2;
            margin: 2rem 0;
        }

        /* ===== Utility ===== */
        .text-accent {
            color: var(--accent);
        }
        .text-gold {
            color: var(--gold);
        }
        .text-muted-custom {
            color: var(--text-muted);
        }
        .bg-card-custom {
            background: var(--bg-card);
        }
        .border-accent-light {
            border-color: rgba(233, 69, 96, 0.15);
        }

        /* ===== Responsive grid enhancements ===== */
        @media (max-width: 576px) {
            .row.g-4 {
                --bs-gutter-y: 1rem;
            }
            .card-custom {
                padding: 1.3rem 1.2rem;
            }
            .faq-item {
                padding: 1rem 1.2rem;
            }
        }

        /* ===== Focus visible ===== */
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== 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(--text-muted);
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a1a2e;
            --primary-dark: #0f0f1a;
            --primary-light: #2d2d44;
            --secondary: #e94560;
            --secondary-light: #ff6b81;
            --secondary-dark: #c23350;
            --accent: #0f3460;
            --accent-light: #1a5276;
            --gold: #f5a623;
            --gold-light: #ffd166;
            --bg-dark: #0b0b14;
            --bg-section: #12121f;
            --bg-card: #1c1c30;
            --bg-card-hover: #252540;
            --text-light: #f0f0f5;
            --text-muted: #9a9ab0;
            --text-soft: #c8c8e0;
            --border-color: #2a2a45;
            --border-light: #3a3a55;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(233, 69, 96, 0.15);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            transition: var(--transition);
        }

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

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

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(11, 11, 20, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
            transition: var(--transition);
        }

        .site-header .navbar {
            padding: 14px 0;
        }

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-light);
            letter-spacing: -0.5px;
            transition: var(--transition);
        }
        .site-header .navbar-brand i {
            color: var(--gold);
            font-size: 1.8rem;
            filter: drop-shadow(0 0 12px rgba(245, 166, 35, 0.3));
        }
        .site-header .navbar-brand span {
            background: linear-gradient(135deg, var(--text-light) 0%, var(--gold-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-header .navbar-brand:hover {
            opacity: 0.9;
            transform: scale(1.02);
        }

        .site-header .navbar-nav .nav-link {
            color: var(--text-soft);
            font-weight: 500;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            font-size: 0.95rem;
        }
        .site-header .navbar-nav .nav-link:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.05);
        }
        .site-header .navbar-nav .nav-link.active {
            color: var(--gold);
            background: rgba(245, 166, 35, 0.08);
        }
        .site-header .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--gold);
            border-radius: 2px;
            box-shadow: 0 0 12px rgba(245, 166, 35, 0.4);
        }

        .nav-cta-btn {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: #fff !important;
            border: none;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 20px rgba(233, 69, 96, 0.3);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 35px rgba(233, 69, 96, 0.4);
            background: linear-gradient(135deg, var(--secondary-light), var(--secondary));
        }
        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 10px rgba(233, 69, 96, 0.3);
        }

        .navbar-toggler {
            border: 1px solid var(--border-light);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: transparent;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='rgba(240,240,245,0.8)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.3);
        }

        /* ===== Article Page ===== */
        .article-page {
            padding: 60px 0 80px;
            min-height: 60vh;
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            padding: 16px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-bottom: 40px;
            font-size: 0.9rem;
        }
        .article-breadcrumb a {
            color: var(--text-muted);
        }
        .article-breadcrumb a:hover {
            color: var(--gold);
        }
        .article-breadcrumb .separator {
            color: var(--text-muted);
            opacity: 0.4;
        }
        .article-breadcrumb .current {
            color: var(--text-light);
            font-weight: 500;
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-header {
            margin-bottom: 40px;
        }
        .article-header h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--text-light) 0%, var(--gold-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 20px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .article-meta .category-badge {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(233, 69, 96, 0.15);
            color: var(--secondary-light);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            border: 1px solid rgba(233, 69, 96, 0.25);
        }
        .article-meta .date {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .date i {
            font-size: 0.85rem;
        }

        .article-featured-image {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            margin-bottom: 40px;
            border: 1px solid var(--border-color);
        }

        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px 52px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-soft);
        }
        .article-content p {
            margin-bottom: 1.5rem;
        }
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--text-light);
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-weight: 700;
        }
        .article-content h2 {
            font-size: 1.8rem;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 12px;
        }
        .article-content h3 {
            font-size: 1.4rem;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 1.5rem;
            padding-left: 1.8rem;
        }
        .article-content ul li,
        .article-content ol li {
            margin-bottom: 0.6rem;
            position: relative;
        }
        .article-content ul li::before {
            content: '✦';
            color: var(--gold);
            position: absolute;
            left: -1.4rem;
            font-size: 0.7rem;
            top: 0.2rem;
        }
        .article-content blockquote {
            border-left: 4px solid var(--secondary);
            padding: 16px 24px;
            margin: 1.5rem 0;
            background: rgba(233, 69, 96, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-soft);
            font-style: italic;
        }
        .article-content a {
            color: var(--secondary-light);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content a:hover {
            color: var(--gold);
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content code {
            background: var(--primary-dark);
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--gold-light);
            border: 1px solid var(--border-color);
        }
        .article-content pre {
            background: var(--primary-dark);
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            border: 1px solid var(--border-color);
            margin-bottom: 1.5rem;
        }
        .article-content pre code {
            background: none;
            padding: 0;
            border: none;
            color: inherit;
        }

        .article-footer-bar {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-footer-bar .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-footer-bar .tag-item {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50px;
            font-size: 0.8rem;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-footer-bar .tag-item:hover {
            color: var(--gold);
            border-color: var(--gold);
            background: rgba(245, 166, 35, 0.08);
        }
        .article-footer-bar .share-btns {
            display: flex;
            gap: 10px;
        }
        .article-footer-bar .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-card-hover);
            color: var(--text-soft);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            font-size: 1rem;
        }
        .article-footer-bar .share-btn:hover {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(233, 69, 96, 0.25);
        }

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found i {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            display: block;
        }
        .article-not-found h2 {
            font-size: 2rem;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 50px;
            background: var(--secondary);
            color: #fff;
            font-weight: 600;
            border: none;
            transition: var(--transition);
        }
        .article-not-found .btn-back:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(233, 69, 96, 0.3);
        }

        /* ===== Related Articles Section ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
        }
        .related-section .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 36px;
            text-align: center;
            color: var(--text-light);
        }
        .related-section .section-title i {
            color: var(--gold);
            margin-right: 10px;
        }

        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
            border-color: var(--secondary);
        }
        .related-card .cat-tag {
            display: inline-block;
            padding: 2px 12px;
            background: rgba(233, 69, 96, 0.12);
            color: var(--secondary-light);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .related-card h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 10px;
            line-height: 1.4;
            flex: 1;
        }
        .related-card h5 a {
            color: var(--text-light);
        }
        .related-card h5 a:hover {
            color: var(--gold);
        }
        .related-card .card-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-card .card-meta i {
            font-size: 0.75rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            border-top: 1px solid var(--border-color);
            padding: 56px 0 32px;
            color: var(--text-soft);
        }
        .site-footer .footer-brand {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand i {
            color: var(--gold);
            font-size: 1.8rem;
        }
        .site-footer .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
            padding-top: 8px;
        }
        .site-footer .footer-links a {
            color: var(--text-soft);
            font-size: 0.9rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .site-footer .footer-links a:hover {
            color: var(--gold);
            transform: translateX(4px);
        }
        .site-footer .footer-links a::before {
            content: '›';
            font-size: 1.1rem;
            color: var(--secondary);
        }
        .site-footer .footer-social {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            padding-top: 8px;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-soft);
            font-size: 1.2rem;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(233, 69, 96, 0.25);
        }
        .site-footer .footer-bottom {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .site-footer .footer-bottom a {
            color: var(--text-soft);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--gold);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-header h1 {
                font-size: 2rem;
            }
            .article-content {
                padding: 36px 32px;
            }
        }

        @media (max-width: 768px) {
            .site-header .navbar-brand {
                font-size: 1.3rem;
            }
            .site-header .navbar-brand i {
                font-size: 1.4rem;
            }

            .article-page {
                padding: 40px 0 60px;
            }
            .article-header h1 {
                font-size: 1.7rem;
            }
            .article-content {
                padding: 28px 20px;
                font-size: 0.98rem;
            }
            .article-content h2 {
                font-size: 1.4rem;
            }
            .article-content h3 {
                font-size: 1.2rem;
            }
            .article-breadcrumb .current {
                max-width: 180px;
            }
            .article-footer-bar {
                flex-direction: column;
                align-items: flex-start;
            }

            .related-section .section-title {
                font-size: 1.4rem;
            }

            .site-footer {
                padding: 40px 0 24px;
            }
            .site-footer .footer-brand {
                font-size: 1.3rem;
            }
            .site-footer .footer-desc {
                max-width: 100%;
            }
            .site-footer .footer-social a {
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .site-header .navbar {
                padding: 10px 0;
            }
            .site-header .navbar-brand {
                font-size: 1.1rem;
            }
            .site-header .navbar-brand i {
                font-size: 1.2rem;
            }
            .nav-cta-btn {
                padding: 8px 16px;
                font-size: 0.8rem;
            }

            .article-page {
                padding: 24px 0 40px;
            }
            .article-header h1 {
                font-size: 1.4rem;
            }
            .article-meta {
                gap: 12px;
                font-size: 0.8rem;
            }
            .article-content {
                padding: 20px 16px;
                font-size: 0.92rem;
                border-radius: var(--radius-md);
            }
            .article-content h2 {
                font-size: 1.2rem;
            }
            .article-content h3 {
                font-size: 1.05rem;
            }
            .article-breadcrumb {
                padding: 12px 14px;
                font-size: 0.8rem;
                flex-wrap: nowrap;
                overflow-x: auto;
            }
            .article-breadcrumb .current {
                max-width: 120px;
            }
            .article-footer-bar .share-btn {
                width: 36px;
                height: 36px;
                font-size: 0.9rem;
            }

            .related-section {
                padding: 36px 0;
            }
            .related-section .section-title {
                font-size: 1.2rem;
                margin-bottom: 24px;
            }
            .related-card {
                padding: 18px;
            }
            .related-card h5 {
                font-size: 0.95rem;
            }

            .site-footer {
                padding: 32px 0 20px;
            }
            .site-footer .footer-brand {
                font-size: 1.1rem;
            }
            .site-footer .footer-links {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 8px 16px;
            }
            .site-footer .footer-links a::before {
                content: none;
            }
            .site-footer .footer-social {
                gap: 10px;
            }
            .site-footer .footer-social a {
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
            }
            .site-footer .footer-bottom {
                font-size: 0.75rem;
            }
        }

        @media (max-width: 380px) {
            .article-header h1 {
                font-size: 1.2rem;
            }
            .article-content {
                padding: 16px 12px;
            }
            .article-breadcrumb .current {
                max-width: 80px;
            }
        }

        /* ===== Skeleton / Loading ===== */
        .skeleton {
            background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
            background-size: 200% 100%;
            animation: shimmer 1.5s infinite;
            border-radius: var(--radius-sm);
        }
        @keyframes shimmer {
            0% {
                background-position: -200% 0;
            }
            100% {
                background-position: 200% 0;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-light);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ===== Bootstrap Overrides ===== */
        .btn {
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn:hover {
            transform: translateY(-2px);
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn-primary {
            background: var(--secondary);
            border-color: var(--secondary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--secondary-light);
            border-color: var(--secondary-light);
            color: #fff;
            box-shadow: 0 8px 25px rgba(233, 69, 96, 0.3);
        }
        .btn-outline-light {
            border-color: var(--text-muted);
            color: var(--text-soft);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: var(--text-light);
            color: var(--text-light);
        }

        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }
        .card:hover {
            border-color: var(--secondary);
            box-shadow: var(--shadow-glow);
        }

        .badge {
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
        }
        .badge.bg-accent {
            background: rgba(233, 69, 96, 0.15);
            color: var(--secondary-light);
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --accent: #e94560;
            --accent-hover: #d63851;
            --accent-soft: #fde8ec;
            --gold: #f5a623;
            --gold-light: #fef3d9;
            --bg-body: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f0f1a;
            --bg-section-alt: #f0f2f8;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8888a8;
            --text-light: #ffffff;
            --border-color: #e8e8f0;
            --border-light: #f0f0f6;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.10);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-base);
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Header / 导航 ===== */
        .site-header {
            background: var(--primary);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
        }

        .navbar {
            padding-top: 0;
            padding-bottom: 0;
            min-height: 64px;
            background: transparent;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-light) !important;
            padding: 12px 0;
            letter-spacing: 0.5px;
        }
        .navbar-brand i {
            color: var(--gold);
            font-size: 1.4rem;
        }

        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.75) !important;
            padding: 20px 16px;
            font-size: 0.92rem;
            font-weight: 500;
            position: relative;
            transition: var(--transition);
            letter-spacing: 0.3px;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus {
            color: #fff !important;
            background: rgba(255, 255, 255, 0.06);
        }
        .navbar-nav .nav-link.active {
            color: #fff !important;
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 3px;
            background: var(--gold);
            border-radius: 3px 3px 0 0;
        }

        .nav-cta-btn {
            background: var(--accent);
            color: #fff !important;
            border: none;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(233, 69, 96, 0.30);
        }
        .nav-cta-btn:hover {
            background: var(--accent-hover);
            box-shadow: 0 6px 25px rgba(233, 69, 96, 0.40);
            transform: translateY(-2px);
        }

        .navbar-toggler {
            border: none;
            padding: 6px 10px;
            background: rgba(255, 255, 255, 0.10);
            border-radius: 8px;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.30);
        }

        /* ===== 页面头部 ===== */
        .page-header {
            background: var(--primary);
            padding: 60px 0 70px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .page-header::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(233, 69, 96, 0.12) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 50%, rgba(245, 166, 35, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .page-header h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 14px;
            letter-spacing: 1px;
            position: relative;
        }
        .page-header .breadcrumb {
            background: transparent;
            justify-content: center;
            padding: 0;
            margin: 0;
            font-size: 0.92rem;
        }
        .page-header .breadcrumb-item,
        .page-header .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.65);
        }
        .page-header .breadcrumb-item.active {
            color: var(--gold);
        }
        .page-header .breadcrumb-item+.breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.30);
        }
        .page-header .page-desc {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.1rem;
            max-width: 640px;
            margin: 16px auto 0;
            line-height: 1.7;
        }

        /* ===== 板块通用 ===== */
        .section-padding {
            padding: 70px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 40px;
            line-height: 1.7;
        }
        .section-label {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 0.80rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        /* ===== 卡片 ===== */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
            overflow: hidden;
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .card-custom .card-body {
            padding: 24px;
        }
        .card-custom .card-tag {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
        }
        .card-custom .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .card-custom .card-title a {
            color: var(--text-primary);
        }
        .card-custom .card-title a:hover {
            color: var(--accent);
        }
        .card-custom .card-text {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .card-custom .card-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
        }
        .card-custom .card-thumb {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--bg-section-alt);
        }
        .card-custom .card-thumb-placeholder {
            width: 100%;
            height: 200px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.30);
            font-size: 3rem;
        }

        /* ===== 特色资讯卡片 ===== */
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            height: 100%;
            position: relative;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .feature-card .fc-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 18px;
        }
        .feature-card .fc-icon.ic-accent {
            background: var(--accent-soft);
            color: var(--accent);
        }
        .feature-card .fc-icon.ic-gold {
            background: var(--gold-light);
            color: var(--gold);
        }
        .feature-card .fc-icon.ic-primary {
            background: rgba(26, 26, 46, 0.08);
            color: var(--primary);
        }
        .feature-card h5 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.90rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 时间线 ===== */
        .timeline-wrap {
            position: relative;
            padding-left: 36px;
        }
        .timeline-wrap::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-color);
        }
        .timeline-item {
            position: relative;
            padding-bottom: 32px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent);
            border: 3px solid var(--bg-body);
            box-shadow: 0 0 0 2px var(--accent);
        }
        .timeline-item .tl-date {
            font-size: 0.80rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-bottom: 4px;
        }
        .timeline-item .tl-title {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-primary);
        }
        .timeline-item .tl-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== 标签 ===== */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-list .tag {
            display: inline-block;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.82rem;
            color: var(--text-secondary);
            transition: var(--transition);
            font-weight: 500;
        }
        .tag-list .tag:hover {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(233, 69, 96, 0.25);
        }

        /* ===== 分页 ===== */
        .pagination-custom {
            display: flex;
            justify-content: center;
            gap: 6px;
            margin-top: 40px;
        }
        .pagination-custom .page-item .page-link {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 10px 18px;
            color: var(--text-secondary);
            font-weight: 500;
            background: var(--bg-card);
            transition: var(--transition);
        }
        .pagination-custom .page-item .page-link:hover {
            background: var(--accent-soft);
            color: var(--accent);
            border-color: var(--accent);
        }
        .pagination-custom .page-item.active .page-link {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            box-shadow: 0 4px 15px rgba(233, 69, 96, 0.25);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 40%, rgba(233, 69, 96, 0.10) 0%, transparent 60%),
                radial-gradient(ellipse at 30% 60%, rgba(245, 166, 35, 0.06) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 14px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.70);
            max-width: 540px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-section .btn-cta {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 6px 25px rgba(233, 69, 96, 0.30);
        }
        .cta-section .btn-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 10px 35px rgba(233, 69, 96, 0.40);
        }
        .cta-section .btn-outline-cta {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.25);
            padding: 12px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            margin-left: 12px;
        }
        .cta-section .btn-outline-cta:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.50);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.70);
            padding: 50px 0 30px;
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-footer .footer-brand i {
            color: var(--gold);
        }
        .site-footer .footer-desc {
            font-size: 0.90rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 340px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.90rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--gold);
            padding-left: 4px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 16px;
            margin-top: 8px;
        }
        .site-footer .footer-social a {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.50);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(233, 69, 96, 0.25);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            margin-top: 36px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.40);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.50);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--gold);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .navbar-nav .nav-link {
                padding: 12px 16px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .navbar-nav .nav-link.active::after {
                display: none;
            }
            .navbar-nav .nav-link.active {
                background: rgba(255, 255, 255, 0.08);
                border-radius: 8px;
            }
            .navbar-collapse {
                background: var(--primary-light);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                padding: 8px 12px 16px;
                margin-top: 0;
            }
            .nav-cta-btn {
                margin-top: 8px;
                width: 100%;
                text-align: center;
            }
            .page-header h1 {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-padding {
                padding: 50px 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section .btn-outline-cta {
                margin-left: 0;
                margin-top: 12px;
            }
        }

        @media (max-width: 767px) {
            .page-header {
                padding: 40px 0 50px;
            }
            .page-header h1 {
                font-size: 1.6rem;
            }
            .page-header .page-desc {
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 28px;
            }
            .section-padding {
                padding: 40px 0;
            }
            .card-custom .card-thumb,
            .card-custom .card-thumb-placeholder {
                height: 160px;
            }
            .feature-card {
                padding: 20px 18px;
            }
            .timeline-wrap {
                padding-left: 28px;
            }
            .timeline-item::before {
                left: -22px;
                width: 10px;
                height: 10px;
            }
            .cta-section {
                padding: 40px 0;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-cta,
            .cta-section .btn-outline-cta {
                width: 100%;
                max-width: 300px;
                margin-left: auto;
                margin-right: auto;
            }
            .cta-section .btn-outline-cta {
                margin-top: 10px;
            }
            .site-footer .footer-links {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 16px;
            }
            .site-footer .footer-social {
                margin-top: 16px;
            }
            .pagination-custom .page-item .page-link {
                padding: 8px 14px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .navbar-brand {
                font-size: 1.05rem;
            }
            .navbar-brand i {
                font-size: 1.1rem;
            }
            .page-header h1 {
                font-size: 1.3rem;
            }
            .section-title {
                font-size: 1.2rem;
            }
            .card-custom .card-body {
                padding: 18px;
            }
            .card-custom .card-title {
                font-size: 1rem;
            }
            .feature-card .fc-icon {
                width: 44px;
                height: 44px;
                font-size: 1.2rem;
            }
            .tag-list .tag {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
            .site-footer {
                padding: 30px 0 20px;
            }
            .site-footer .footer-brand {
                font-size: 1.1rem;
            }
            .pagination-custom {
                flex-wrap: wrap;
            }
        }