/* roulang page: index */
:root {
            --primary: #1a2456;
            --primary-light: #2a3568;
            --secondary: #a8b2d1;
            --accent: #e09d4c;
            --accent-hover: #c5873c;
            --bg-light: #f7f9fc;
            --bg-soft: #edf1f7;
            --text-dark: #2d3748;
            --text-body: #4a5568;
            --text-muted: #718096;
            --border-color: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 10px 25px -5px rgba(0,0,0,0.08);
            --shadow-hover: 0 20px 35px -8px rgba(0,0,0,0.12);
            --transition: 0.25s ease;
        }
        * {
            box-sizing: border-box;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans', sans-serif;
            background: #ffffff;
            color: var(--text-body);
            line-height: 1.7;
            margin: 0;
            padding: 0;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            transition: var(--transition);
        }
        .container-lg {
            max-width: 1140px;
        }
        /* 导航 */
        .navbar {
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 10px rgba(0,0,0,0.04);
            padding: 0.75rem 0;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--primary);
            letter-spacing: 0.5px;
        }
        .navbar-brand:hover, .navbar-brand:focus {
            color: var(--primary-light);
        }
        .navbar-nav .nav-link {
            color: var(--text-dark);
            font-weight: 500;
            padding: 0.5rem 1.2rem;
            border-radius: 6px;
            margin: 0 2px;
            transition: 0.2s;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus {
            background: var(--bg-soft);
            color: var(--primary);
        }
        .navbar-nav .nav-link.active {
            background: var(--primary);
            color: #fff !important;
        }
        .navbar-toggler {
            border: none;
            padding: 0.25rem 0.5rem;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--primary);
        }
        /* 居中logo桌面态 */
        @media (min-width: 992px) {
            .navbar .container-lg {
                display: flex;
                justify-content: space-between;
            }
            .navbar-collapse {
                flex-basis: auto;
            }
            .center-logo-desktop {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }
        }
        /* 英雄区域 */
        .hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            min-height: 80vh;
            display: flex;
            align-items: center;
            color: #fff;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,36,86,0.85) 0%, rgba(26,36,86,0.7) 100%);
        }
        .hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
        }
        .hero h1 {
            font-size: clamp(2.5rem, 6vw, 4rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.5rem;
        }
        .hero .lead {
            font-size: 1.25rem;
            opacity: 0.92;
            margin-bottom: 2.5rem;
        }
        .btn-accent {
            background: var(--accent);
            border: none;
            color: #1a1a1a;
            font-weight: 600;
            padding: 0.8rem 2.5rem;
            border-radius: 50px;
            box-shadow: 0 8px 18px rgba(240,160,75,0.35);
            transition: all 0.3s;
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            color: #1a1a1a;
            transform: translateY(-2px);
            box-shadow: 0 12px 22px rgba(240,160,75,0.45);
        }
        .wave-divider {
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 100%;
            z-index: 3;
        }
        .wave-divider svg {
            display: block;
        }
        /* 区块通用 */
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .section-subtitle {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 3rem;
            text-align: center;
        }
        /* 卡片 */
        .feature-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 2rem 1.5rem;
            box-shadow: var(--shadow);
            transition: var(--transition);
            text-align: center;
            height: 100%;
            border: 1px solid var(--border-color);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-5px);
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--accent);
            margin-bottom: 1.5rem;
        }
        /* 分类卡片 */
        .category-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            text-decoration: none;
            color: var(--text-dark);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
        }
        .category-card img {
            aspect-ratio: 16/9;
            object-fit: cover;
            width: 100%;
        }
        .category-card-body {
            padding: 1.5rem;
            flex: 1;
        }
        .category-card-body h4 {
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        /* 文章列表卡片 */
        .article-list-item {
            background: #fff;
            border-radius: var(--radius-sm);
            padding: 1.5rem;
            box-shadow: 0 4px 10px rgba(0,0,0,0.04);
            margin-bottom: 1.5rem;
            transition: var(--transition);
            border: 1px solid #edf2f7;
        }
        .article-list-item:hover {
            box-shadow: 0 8px 18px rgba(0,0,0,0.06);
            border-color: #d2dcec;
        }
        .article-list-item .category-tag {
            background: #eef2ff;
            color: #434190;
            font-size: 0.8rem;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-weight: 600;
        }
        /* 统计数字 */
        .stat-block {
            background: #fff;
            border-radius: var(--radius);
            padding: 2rem 1.5rem;
            box-shadow: var(--shadow);
            text-align: center;
            border: 1px solid var(--border-color);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary);
        }
        /* FAQ */
        .accordion-button:not(.collapsed) {
            background: var(--bg-light);
            color: var(--primary);
            font-weight: 600;
            box-shadow: none;
        }
        .accordion-button:focus {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(26,36,86,0.2);
        }
        /* CTA */
        .cta-section {
            background: var(--primary);
            color: #fff;
            border-radius: 20px;
            padding: 3rem 2rem;
            text-align: center;
        }
        .cta-section h3 {
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .subscribe-form {
            display: flex;
            gap: 0.5rem;
            max-width: 500px;
            margin: 1.5rem auto 0;
        }
        .subscribe-form input {
            flex: 1;
            padding: 0.7rem 1.2rem;
            border-radius: 50px;
            border: none;
            background: rgba(255,255,255,0.15);
            color: #fff;
        }
        .subscribe-form input::placeholder {
            color: rgba(255,255,255,0.7);
        }
        .subscribe-form .btn-join {
            background: var(--accent);
            border: none;
            color: #1a1a1a;
            font-weight: 600;
            padding: 0.7rem 2rem;
            border-radius: 50px;
        }
        /* 页脚 */
        footer {
            background: #0f1427;
            color: #cbd5e0;
            padding: 3rem 0 1.5rem;
            font-size: 0.95rem;
        }
        footer a {
            color: #cbd5e0;
            text-decoration: none;
        }
        footer a:hover {
            color: #fff;
        }
        footer .footer-brand {
            font-weight: 700;
            color: #fff;
            font-size: 1.3rem;
        }
        @media (max-width: 992px) {
            .navbar .center-logo-desktop {
                position: static;
                transform: none;
                order: initial;
            }
        }

/* roulang page: article */
:root {
            --primary: #2B3A4F;
            --primary-light: #3E5166;
            --accent: #D4A373;
            --accent-light: #E6C9A0;
            --bg-body: #F7F4EF;
            --bg-card: #FFFFFF;
            --text: #2c2c2c;
            --text-muted: #6B7280;
            --text-light: #9CA3AF;
            --border: #E5E7EB;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.1);
            --shadow-card: 0 10px 25px -5px rgba(0,0,0,0.05), 0 8px 10px -6px rgba(0,0,0,0.02);
            --shadow-hover: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);
            --transition: all 0.2s ease;
        }
        * {
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--bg-body);
            color: var(--text);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
        }

        /* 导航 */
        .navbar {
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-sm);
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--border);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--primary) !important;
            letter-spacing: 1px;
        }
        .center-logo-desktop {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary) !important;
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .nav-link {
            color: var(--text) !important;
            font-weight: 500;
            margin: 0 0.5rem;
            position: relative;
            transition: var(--transition);
            padding: 0.4rem 0.8rem;
            border-radius: var(--radius-sm);
        }
        .nav-link:hover,
        .nav-link.active {
            color: var(--primary) !important;
            background: rgba(43,58,79,0.05);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .navbar-toggler {
            border: none;
            box-shadow: none;
        }

        /* 文章Banner */
        .article-hero {
            position: relative;
            height: 55vh;
            min-height: 380px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            display: flex;
            align-items: flex-end;
            justify-content: center;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.3) 60%, rgba(0,0,0,0.2) 100%);
            z-index: 1;
        }
        .article-hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 800px;
            padding: 0 1.5rem 4rem 1.5rem;
            color: #fff;
        }
        .article-hero-content .category-badge {
            display: inline-block;
            background: rgba(255,255,255,0.2);
            backdrop-filter: blur(5px);
            color: #fff;
            padding: 0.25rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1rem;
            border: 1px solid rgba(255,255,255,0.3);
        }
        .article-hero-content h1 {
            font-family: 'Noto Serif SC', 'PingFang SC', serif;
            font-weight: 700;
            font-size: 2.8rem;
            line-height: 1.3;
            margin-bottom: 1rem;
            text-shadow: 0 2px 10px rgba(0,0,0,0.5);
        }
        .article-meta {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
            font-size: 0.95rem;
            opacity: 0.9;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }

        /* 波形分隔 */
        .wave-separator {
            position: relative;
            margin-top: -2px;
            line-height: 0;
            background: var(--bg-body);
        }
        .wave-separator svg {
            display: block;
            width: 100%;
            height: 80px;
            fill: var(--bg-body);
        }

        /* 正文容器 */
        .article-content-wrapper {
            padding-top: 1.5rem;
            padding-bottom: 4rem;
        }
        .article-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 3rem 2.5rem;
            max-width: 820px;
            margin: -3rem auto 2rem;
            position: relative;
            z-index: 5;
        }
        .article-body {
            font-family: 'Noto Serif SC', 'PingFang SC', serif;
            font-size: 1.15rem;
            line-height: 1.9;
            color: var(--text);
            word-break: break-word;
        }
        .article-body h2, .article-body h3, .article-body h4 {
            font-family: 'Inter', 'PingFang SC', sans-serif;
            font-weight: 600;
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--primary);
        }
        .article-body p {
            margin-bottom: 1.5rem;
        }
        .article-body img {
            border-radius: var(--radius-sm);
            margin: 2rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            padding-left: 1.5rem;
            margin: 2rem 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-body ul, .article-body ol {
            padding-left: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .article-body li {
            margin-bottom: 0.5rem;
        }

        /* 文章底部操作 */
        .article-footer-actions {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border);
        }
        .btn-ghost {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text);
            padding: 0.6rem 1.5rem;
            border-radius: 50px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(43,58,79,0.03);
        }
        .btn-primary-custom {
            background: var(--primary);
            border: none;
            color: #fff;
            padding: 0.7rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            box-shadow: 0 4px 10px rgba(43,58,79,0.3);
        }
        .btn-primary-custom:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 15px rgba(43,58,79,0.4);
        }

        /* 未找到内容 */
        .not-found-container {
            text-align: center;
            padding: 6rem 1rem;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            max-width: 600px;
            margin: 4rem auto;
        }
        .not-found-container h2 {
            font-size: 2rem;
            margin-bottom: 1rem;
        }

        /* 页脚 */
        footer {
            background: var(--primary);
            color: rgba(255,255,255,0.85);
            padding: 3rem 0 1.5rem;
            font-size: 0.95rem;
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
        }
        footer a {
            color: rgba(255,255,255,0.75);
            text-decoration: none;
            transition: var(--transition);
            font-weight: 500;
        }
        footer a:hover {
            color: #fff;
            text-decoration: underline;
        }
        footer hr {
            border-color: rgba(255,255,255,0.2);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .article-hero {
                height: 45vh;
                min-height: 320px;
            }
            .article-hero-content h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .navbar-brand.d-lg-none {
                display: block !important;
            }
            .article-hero {
                height: 40vh;
                min-height: 280px;
            }
            .article-hero-content {
                padding-bottom: 2.5rem;
            }
            .article-hero-content h1 {
                font-size: 1.8rem;
            }
            .article-card {
                padding: 2rem 1.5rem;
                margin: -2rem 0.5rem 1rem;
            }
            .article-body {
                font-size: 1.05rem;
            }
            .article-footer-actions {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .article-hero-content h1 {
                font-size: 1.5rem;
            }
            .article-meta {
                gap: 0.8rem;
                font-size: 0.85rem;
            }
            .article-card {
                padding: 1.5rem 1rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #4A3DB6;
            --color-primary-dark: #2E2278;
            --color-primary-light: #7B6FE8;
            --color-accent: #E8A840;
            --color-accent-soft: #FDF3E0;
            --color-bg: #F9F8FC;
            --color-bg-alt: #F0EEF8;
            --color-surface: #FFFFFF;
            --color-text: #1E1B2E;
            --color-text-soft: #5C5873;
            --color-text-muted: #8B879E;
            --color-border: #E2DFEE;
            --color-border-light: #F0EEF6;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-xs: 0 1px 3px rgba(46, 34, 120, 0.04);
            --shadow-sm: 0 2px 8px rgba(46, 34, 120, 0.07);
            --shadow-md: 0 6px 24px rgba(46, 34, 120, 0.10);
            --shadow-lg: 0 14px 44px rgba(46, 34, 120, 0.13);
            --shadow-xl: 0 24px 64px rgba(46, 34, 120, 0.16);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.40s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --section-gap: 80px;
            --section-gap-sm: 48px;
            --container-max: 1140px;
        }

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

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

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

        main {
            flex: 1 0 auto;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--color-primary-light);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
        }
        button:focus-visible {
            outline: 2px solid var(--color-primary-light);
            outline-offset: 3px;
        }

        input {
            font-family: inherit;
        }

        .container-lg {
            max-width: var(--container-max);
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ========== HEADER / NAV ========== */
        header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: var(--shadow-xs);
            transition: box-shadow var(--transition-base);
        }
        header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .navbar {
            padding-top: 14px;
            padding-bottom: 14px;
            min-height: 64px;
        }
        .navbar .container-lg {
            position: relative;
        }

        .navbar-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: 0.03em;
            color: var(--color-primary-dark) !important;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }
        .navbar-brand:hover {
            color: var(--color-primary) !important;
        }

        .center-logo-desktop {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.4rem;
            letter-spacing: 0.04em;
            color: var(--color-primary-dark) !important;
            white-space: nowrap;
            transition: color var(--transition-fast);
            text-decoration: none;
        }
        .center-logo-desktop:hover {
            color: var(--color-primary) !important;
        }

        .navbar-nav {
            gap: 4px;
            align-items: center;
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-soft) !important;
            padding: 8px 16px !important;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .navbar-nav .nav-link:hover {
            color: var(--color-primary) !important;
            background-color: var(--color-bg-alt);
        }
        .navbar-nav .nav-link.active {
            color: var(--color-primary) !important;
            background-color: var(--color-accent-soft);
            font-weight: 600;
        }
        .navbar-nav .nav-link:focus-visible {
            outline: 2px solid var(--color-primary-light);
            outline-offset: 2px;
        }

        .navbar-toggler {
            border: 1.5px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 6px 10px;
            transition: all var(--transition-fast);
            background: var(--color-surface);
        }
        .navbar-toggler:hover {
            border-color: var(--color-primary-light);
            background: var(--color-bg-alt);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(74, 61, 182, 0.15);
            outline: none;
        }
        .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='%234A3DB6' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
            width: 24px;
            height: 24px;
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: var(--color-surface);
                border-radius: var(--radius-md);
                padding: 12px 16px;
                margin-top: 10px;
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--color-border-light);
            }
            .navbar-nav {
                gap: 2px;
            }
            .navbar-nav .nav-link {
                padding: 10px 14px !important;
                font-size: 0.95rem;
            }
            .center-logo-desktop {
                display: none !important;
            }
            .navbar-brand.d-lg-none {
                display: inline-block !important;
            }
        }
        @media (min-width: 992px) {
            .navbar-brand.d-lg-none {
                display: none !important;
            }
            .center-logo-desktop {
                display: flex;
            }
            .navbar-nav {
                flex-direction: row;
            }
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrapper {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 14px 0;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.875rem;
            color: var(--color-text-muted);
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb-nav li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb-nav a {
            color: var(--color-text-soft);
            font-weight: 500;
            transition: color var(--transition-fast);
        }
        .breadcrumb-nav a:hover {
            color: var(--color-primary);
        }
        .breadcrumb-nav .separator {
            color: var(--color-border);
            font-size: 0.7rem;
        }
        .breadcrumb-nav .current {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            background: linear-gradient(160deg, #2E2278 0%, #4A3DB6 40%, #3B2F80 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 90px 0 80px;
            overflow: hidden;
            color: #FFFFFF;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(30, 27, 46, 0.55);
            z-index: 1;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
        }
        .page-banner .banner-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }
        .page-banner h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            line-height: 1.25;
            color: #FFFFFF;
        }
        .page-banner .banner-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.88);
            max-width: 600px;
            line-height: 1.7;
        }
        .page-banner .banner-wave {
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            z-index: 3;
            pointer-events: none;
        }
        .page-banner .banner-wave svg {
            width: 100%;
            height: auto;
            display: block;
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 56px 0 48px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner .banner-desc {
                font-size: 1rem;
            }
        }

        /* ========== SECTION COMMON ========== */
        .section-block {
            padding: var(--section-gap) 0;
        }
        .section-block.alt-bg {
            background: var(--color-bg-alt);
        }
        .section-block.surface-bg {
            background: var(--color-surface);
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-primary);
            background: var(--color-accent-soft);
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 12px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 14px;
            letter-spacing: 0.01em;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-soft);
            max-width: 640px;
            line-height: 1.75;
        }
        .section-title-group {
            margin-bottom: 40px;
        }

        @media (max-width: 768px) {
            .section-block {
                padding: var(--section-gap-sm) 0;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
            .section-title-group {
                margin-bottom: 28px;
            }
        }

        /* ========== STATS CARDS ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 48px;
            height: 4px;
            background: var(--color-primary-light);
            border-radius: 0 0 6px 6px;
            opacity: 0;
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
            transform: translateY(-4px);
        }
        .stat-card:hover::before {
            opacity: 1;
            width: 60px;
        }
        .stat-card .stat-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-sm);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 14px;
            background: var(--color-bg-alt);
            color: var(--color-primary);
            transition: all var(--transition-base);
        }
        .stat-card:hover .stat-icon {
            background: var(--color-primary);
            color: #fff;
        }
        .stat-card .stat-value {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            line-height: 1.1;
            margin-bottom: 4px;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 20px 14px;
            }
            .stat-card .stat-value {
                font-size: 1.6rem;
            }
            .stat-card .stat-label {
                font-size: 0.8rem;
            }
        }

        /* ========== CONTENT BLOCK ========== */
        .content-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .content-row.reverse {
            direction: rtl;
        }
        .content-row.reverse > * {
            direction: ltr;
        }
        .content-text h3 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 14px;
            line-height: 1.35;
        }
        .content-text p {
            color: var(--color-text-soft);
            line-height: 1.8;
            margin-bottom: 10px;
        }
        .content-text .highlight-list {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }
        .content-text .highlight-list li {
            padding: 6px 0 6px 28px;
            position: relative;
            color: var(--color-text-soft);
            line-height: 1.7;
        }
        .content-text .highlight-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 12px;
            width: 10px;
            height: 10px;
            background: var(--color-accent);
            border-radius: 50%;
            opacity: 0.8;
        }
        .content-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
        }
        .content-image:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .content-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        @media (max-width: 768px) {
            .content-row {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .content-row.reverse {
                direction: ltr;
            }
            .content-text h3 {
                font-size: 1.3rem;
            }
        }

        /* ========== INSIGHT CARDS GRID ========== */
        .insight-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .insight-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .insight-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
            transform: translateY(-4px);
        }
        .insight-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
        }
        .insight-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .insight-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }
        .insight-card .card-img-wrap .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--color-accent);
            color: #1E1B2E;
            font-weight: 600;
            font-size: 0.75rem;
            padding: 4px 12px;
            border-radius: 50px;
            letter-spacing: 0.04em;
            z-index: 2;
        }
        .insight-card .card-body-custom {
            padding: 20px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .insight-card .card-body-custom h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .insight-card .card-body-custom p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.65;
            margin-bottom: 14px;
            flex: 1;
        }
        .insight-card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            border-top: 1px solid var(--color-border-light);
            padding-top: 12px;
        }
        .insight-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        @media (max-width: 992px) {
            .insight-cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 600px) {
            .insight-cards-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ========== TIMELINE / LIST ========== */
        .trend-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .trend-list li {
            display: flex;
            gap: 20px;
            padding: 22px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: background var(--transition-fast);
        }
        .trend-list li:last-child {
            border-bottom: none;
        }
        .trend-list li:hover {
            background: var(--color-bg-alt);
            margin: 0 -16px;
            padding-left: 16px;
            padding-right: 16px;
            border-radius: var(--radius-md);
        }
        .trend-list .trend-date {
            flex-shrink: 0;
            width: 90px;
            text-align: center;
            padding-top: 2px;
        }
        .trend-list .trend-date .day {
            display: block;
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1;
        }
        .trend-list .trend-date .month {
            display: block;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            font-weight: 500;
            margin-top: 2px;
        }
        .trend-list .trend-info h5 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .trend-list .trend-info p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-bottom: 0;
            line-height: 1.55;
        }

        @media (max-width: 520px) {
            .trend-list li {
                flex-direction: column;
                gap: 8px;
                padding: 16px 0;
            }
            .trend-list .trend-date {
                width: auto;
                text-align: left;
                display: flex;
                align-items: baseline;
                gap: 8px;
            }
            .trend-list .trend-date .day {
                font-size: 1.4rem;
            }
        }

        /* ========== METHOD BLOCK ========== */
        .method-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .method-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: all var(--transition-base);
        }
        .method-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--color-border);
        }
        .method-item .method-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--color-bg-alt);
            color: var(--color-primary);
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-base);
        }
        .method-item:hover .method-num {
            background: var(--color-primary);
            color: #fff;
        }
        .method-item .method-text h5 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
        }
        .method-item .method-text p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .method-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ========== FAQ ========== */
        .faq-wrapper {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-xs);
        }
        .faq-item .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 18px 22px;
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 14px;
            cursor: pointer;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }
        .faq-item .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-item .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            transition: all var(--transition-base);
            color: var(--color-primary);
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        .faq-item .faq-answer p {
            font-size: 0.95rem;
            color: var(--color-text-soft);
            line-height: 1.75;
            margin: 0;
        }

        /* ========== CTA ========== */
        .cta-block {
            background: linear-gradient(145deg, #2E2278 0%, #4A3DB6 60%, #3B2F80 100%);
            border-radius: var(--radius-xl);
            padding: 56px 44px;
            text-align: center;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }
        .cta-block::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-block h3 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-block p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 500px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 1;
            line-height: 1.7;
        }
        .btn-cta {
            display: inline-block;
            background: var(--color-accent);
            color: #1E1B2E;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 36px;
            border-radius: 50px;
            text-decoration: none;
            transition: all var(--transition-base);
            position: relative;
            z-index: 1;
            letter-spacing: 0.03em;
            border: none;
            cursor: pointer;
        }
        .btn-cta:hover {
            background: #F0B84A;
            color: #1E1B2E;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 168, 64, 0.4);
        }
        .btn-cta:focus-visible {
            outline: 3px solid #fff;
            outline-offset: 3px;
        }

        @media (max-width: 768px) {
            .cta-block {
                padding: 36px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-block h3 {
                font-size: 1.4rem;
            }
            .cta-block p {
                font-size: 0.95rem;
            }
        }

        /* ========== FOOTER ========== */
        footer {
            background: var(--color-surface);
            border-top: 1px solid var(--color-border-light);
            padding: 36px 0 20px;
            flex-shrink: 0;
        }
        footer .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--color-primary-dark);
            letter-spacing: 0.03em;
        }
        footer p {
            color: var(--color-text-muted);
            font-size: 0.9rem;
        }
        footer nav a {
            color: var(--color-text-soft);
            font-weight: 500;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
            text-decoration: none;
        }
        footer nav a:hover {
            color: var(--color-primary);
        }
        footer hr {
            border-color: var(--color-border-light);
            opacity: 1;
            margin: 18px 0;
        }
        footer small {
            color: var(--color-text-muted);
            font-size: 0.8rem;
        }

        /* ========== BACK TO TOP ========== */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            box-shadow: var(--shadow-md);
            opacity: 0;
            pointer-events: none;
            transition: all var(--transition-base);
            z-index: 1000;
            cursor: pointer;
        }
        .back-to-top.visible {
            opacity: 1;
            pointer-events: auto;
        }
        .back-to-top:hover {
            background: var(--color-primary-dark);
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }