/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1b3d;
            --primary-light: #1a2d6c;
            --primary-dark: #080e24;
            --accent: #e8751a;
            --accent-light: #f59e42;
            --accent-dark: #c95f0e;
            --bg: #f5f7fa;
            --bg-card: #ffffff;
            --bg-dark: #0a1428;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-white: #f0f2f5;
            --border: #e5e7eb;
            --border-light: rgba(255, 255, 255, 0.12);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
            --shadow-accent: 0 4px 20px rgba(232, 117, 26, 0.35);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --radius-xl: 24px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --nav-height: 72px;
            --nav-blur: 16px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--nav-height);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--nav-height);
            background: rgba(15, 27, 61, 0.55);
            backdrop-filter: blur(var(--nav-blur));
            -webkit-backdrop-filter: blur(var(--nav-blur));
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(15, 27, 61, 0.92);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
        }
        .site-header .navbar {
            padding-top: 0;
            padding-bottom: 0;
            height: 100%;
        }
        .site-header .navbar-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.5px;
            padding: 0;
            margin-right: 2rem;
            background: linear-gradient(135deg, #f59e42, #e8751a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-header .navbar-brand:hover {
            opacity: 0.9;
        }
        .site-header .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.78);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius-xs);
            transition: var(--transition);
            position: relative;
        }
        .site-header .navbar-nav .nav-link:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }
        .site-header .navbar-nav .nav-link.active {
            color: var(--accent-light);
            background: rgba(232, 117, 26, 0.12);
        }
        .site-header .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 10px;
            border-radius: var(--radius-xs);
            background: transparent;
            color: #ffffff;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .navbar-toggler:hover {
            border-color: var(--accent-light);
            color: var(--accent-light);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(232, 117, 26, 0.3);
        }
        .navbar-toggler-icon-custom {
            display: inline-block;
            width: 22px;
            height: 2px;
            background: currentColor;
            position: relative;
            vertical-align: middle;
        }
        .navbar-toggler-icon-custom::before,
        .navbar-toggler-icon-custom::after {
            content: '';
            display: block;
            width: 22px;
            height: 2px;
            background: currentColor;
            position: absolute;
            left: 0;
            transition: var(--transition);
        }
        .navbar-toggler-icon-custom::before {
            top: -7px;
        }
        .navbar-toggler-icon-custom::after {
            top: 7px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(8, 14, 36, 0.85), rgba(15, 27, 61, 0.75)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #ffffff;
            text-align: center;
            padding: 80px 20px 60px;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 160px;
            background: linear-gradient(to top, var(--bg), transparent);
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(232, 117, 26, 0.2);
            border: 1px solid rgba(232, 117, 26, 0.3);
            color: var(--accent-light);
            padding: 6px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero h1 {
            font-size: 3.8rem;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -1px;
            background: linear-gradient(135deg, #ffffff, #f0e6d0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            font-size: 1rem;
            font-weight: 700;
            color: #ffffff;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            border: none;
            border-radius: 50px;
            box-shadow: var(--shadow-accent);
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-accent:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(232, 117, 26, 0.45);
            color: #ffffff;
        }
        .btn-accent:active {
            transform: translateY(0);
        }
        .btn-outline-light-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 13px 34px;
            font-size: 1rem;
            font-weight: 600;
            color: #ffffff;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.35);
            border-radius: 50px;
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-outline-light-custom:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
            transform: translateY(-2px);
        }
        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 60px;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-number {
            font-size: 2.4rem;
            font-weight: 900;
            color: #ffffff;
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 4px;
        }

        /* ===== 通用板块标题 ===== */
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-title .title-accent {
            display: inline-block;
            width: 48px;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            border-radius: 4px;
            margin-top: 12px;
        }

        /* ===== 板块间距 ===== */
        .section-padding {
            padding: 90px 0;
        }
        .section-padding-sm {
            padding: 60px 0;
        }

        /* ===== 特色卡片 ===== */
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            border: 1px solid var(--border);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: #ffffff;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .feature-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--primary);
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== 分类入口卡片 ===== */
        .category-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            background: var(--bg-card);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .category-card .card-img {
            height: 200px;
            object-fit: cover;
            width: 100%;
        }
        .category-card .card-body {
            padding: 24px 22px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card .card-tag {
            display: inline-block;
            align-self: flex-start;
            background: rgba(232, 117, 26, 0.1);
            color: var(--accent-dark);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .category-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .category-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
        }
        .category-card .card-link {
            font-weight: 600;
            color: var(--accent);
            margin-top: 12px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .category-card .card-link:hover {
            gap: 12px;
            color: var(--accent-dark);
        }

        /* ===== 资讯文章卡片 ===== */
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .news-card .card-img-top {
            height: 190px;
            object-fit: cover;
            width: 100%;
        }
        .news-card .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .meta-row {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 10px;
            font-size: 0.82rem;
            color: var(--text-light);
        }
        .news-card .meta-row .badge-cat {
            background: rgba(15, 27, 61, 0.08);
            color: var(--primary-light);
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 600;
        }
        .news-card .meta-row .date {
            color: var(--text-light);
        }
        .news-card h5 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.5;
            margin-bottom: 8px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .excerpt {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .news-card .read-more {
            font-weight: 600;
            color: var(--accent);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .news-card .read-more:hover {
            gap: 12px;
            color: var(--accent-dark);
        }
        .empty-news {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-light);
            font-size: 1.05rem;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #ffffff;
        }
        .stats-section .stat-item {
            text-align: center;
            padding: 28px 16px;
        }
        .stats-section .stat-number {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.2;
            background: linear-gradient(135deg, #f59e42, #e8751a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stats-section .stat-label {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 6px;
            font-weight: 500;
        }

        /* ===== 流程 / 服务 ===== */
        .process-step {
            text-align: center;
            padding: 20px 16px;
            position: relative;
        }
        .process-step .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #ffffff;
            font-size: 1.3rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 4px 16px rgba(232, 117, 26, 0.3);
        }
        .process-step h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
            max-width: 280px;
            margin: 0 auto;
        }
        .process-arrow {
            display: none;
        }
        @media (min-width: 768px) {
            .process-arrow {
                display: flex;
                align-items: center;
                justify-content: center;
                font-size: 1.8rem;
                color: var(--accent-light);
                opacity: 0.4;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-card);
        }
        .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            padding: 18px 24px;
            background: #ffffff;
            box-shadow: none;
            transition: var(--transition);
        }
        .accordion-button:not(.collapsed) {
            color: var(--accent-dark);
            background: rgba(232, 117, 26, 0.04);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--accent-light);
        }
        .accordion-button::after {
            background-size: 16px;
            transition: var(--transition);
        }
        .accordion-body {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            background-blend-mode: overlay;
            color: #ffffff;
            text-align: center;
            padding: 90px 20px;
        }
        .cta-section h2 {
            font-size: 2.6rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 540px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .cta-section .btn-accent {
            font-size: 1.1rem;
            padding: 16px 44px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .site-footer h5 {
            color: #ffffff;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .site-footer a:hover {
            color: var(--accent-light);
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f59e42, #e8751a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 0.92rem;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 0.92rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: #ffffff;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 3rem;
            }
            .hero {
                min-height: 70vh;
            }
            .section-title h2 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            body {
                padding-top: 64px;
            }
            :root {
                --nav-height: 64px;
            }
            .site-header .navbar-brand {
                font-size: 1.2rem;
                margin-right: 0;
            }
            .site-header .navbar-nav .nav-link {
                padding: 10px 16px;
                font-size: 0.95rem;
                color: rgba(255, 255, 255, 0.85);
            }
            .site-header .navbar-nav .nav-link.active::after {
                display: none;
            }
            .navbar-collapse {
                background: rgba(8, 14, 36, 0.97);
                border-radius: 0 0 var(--radius-sm) var(--radius-sm);
                padding: 8px 0;
                margin-top: 4px;
                border: 1px solid rgba(255, 255, 255, 0.06);
            }
            .hero {
                min-height: 60vh;
                padding: 60px 16px 40px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-stats-row {
                gap: 24px;
                margin-top: 36px;
                padding-top: 24px;
            }
            .hero-stat-number {
                font-size: 1.8rem;
            }
            .section-padding {
                padding: 60px 0;
            }
            .section-title h2 {
                font-size: 1.7rem;
            }
            .section-title {
                margin-bottom: 32px;
            }
            .feature-card {
                padding: 28px 20px 24px;
            }
            .category-card .card-img {
                height: 160px;
            }
            .news-card .card-img-top {
                height: 160px;
            }
            .stats-section .stat-number {
                font-size: 2.2rem;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-section {
                padding: 60px 20px;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
            .process-step {
                padding: 16px 8px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn-accent,
            .btn-outline-light-custom {
                width: 100%;
                max-width: 320px;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero p {
                font-size: 0.92rem;
            }
            .section-title h2 {
                font-size: 1.4rem;
            }
            .hero-stat-number {
                font-size: 1.5rem;
            }
            .hero-stats-row {
                gap: 16px;
            }
            .hero-stat-item {
                min-width: 80px;
            }
            .feature-card h3 {
                font-size: 1.1rem;
            }
            .category-card h3 {
                font-size: 1.1rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .stats-section .stat-number {
                font-size: 1.8rem;
            }
            .footer-social {
                justify-content: center;
            }
        }

        /* ===== 辅助 ===== */
        .bg-soft-accent {
            background: rgba(232, 117, 26, 0.04);
        }
        .rounded-custom {
            border-radius: var(--radius);
        }
        .shadow-custom {
            box-shadow: var(--shadow);
        }
        .mt-1 {
            margin-top: 0.5rem;
        }
        .mb-1 {
            margin-bottom: 0.5rem;
        }
        .gap-2 {
            gap: 0.5rem;
        }
        .gap-3 {
            gap: 1rem;
        }
        .gap-4 {
            gap: 1.5rem;
        }
        .fw-700 {
            font-weight: 700;
        }
        .text-accent {
            color: var(--accent);
        }
        .text-accent-dark {
            color: var(--accent-dark);
        }

        /* Bootstrap 覆盖 */
        .row.gy-4 {
            --bs-gutter-y: 1.5rem;
        }
        .row.gy-5 {
            --bs-gutter-y: 2.5rem;
        }

/* roulang page: article */
:root {
            --primary: #1a2a6c;
            --primary-dark: #0f1a4a;
            --primary-light: #2a3f8a;
            --accent: #e8491d;
            --accent-light: #ff6b3d;
            --accent-dark: #c43a12;
            --bg-dark: #0b0f1a;
            --bg-card: #ffffff;
            --bg-section: #f4f6fc;
            --bg-footer: #0b0f1a;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8a8aaa;
            --text-light: #f0f0f8;
            --border-color: rgba(26, 42, 108, 0.1);
            --border-light: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --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, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-section);
            overflow-x: hidden;
        }

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

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }

        /* ===== 玻璃导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: 72px;
            background: rgba(11, 15, 26, 0.55);
            backdrop-filter: blur(20px) saturate(180%);
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(11, 15, 26, 0.92);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.35);
        }

        .navbar {
            padding: 0;
            height: 100%;
        }

        .navbar-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            -webkit-text-fill-color: initial;
        }
        .navbar-brand i {
            font-size: 1.6rem;
            color: var(--accent-light);
        }
        .navbar-brand:hover {
            color: var(--accent-light);
            transform: scale(1.02);
        }

        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.5rem 1.2rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }
        .navbar-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .navbar-nav .nav-link.active {
            color: var(--accent-light);
            background: rgba(232, 73, 29, 0.12);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent-light);
            border-radius: 4px;
        }

        .navbar-toggler {
            border: none;
            padding: 0;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .navbar-toggler:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        .navbar-toggler-icon-custom {
            display: block;
            width: 20px;
            height: 2px;
            background: #fff;
            position: relative;
            transition: var(--transition);
        }
        .navbar-toggler-icon-custom::before,
        .navbar-toggler-icon-custom::after {
            content: '';
            position: absolute;
            left: 0;
            width: 100%;
            height: 2px;
            background: #fff;
            transition: var(--transition);
        }
        .navbar-toggler-icon-custom::before {
            top: -7px;
        }
        .navbar-toggler-icon-custom::after {
            top: 7px;
        }

        /* ===== 文章横幅 ===== */
        .article-banner {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--bg-dark) 70%, #0f1a2e 100%);
            position: relative;
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(232, 73, 29, 0.15), transparent 60%);
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .article-banner .breadcrumb {
            background: transparent;
            padding: 0;
            margin-bottom: 1.2rem;
            font-size: 0.9rem;
        }
        .article-banner .breadcrumb-item {
            color: rgba(255, 255, 255, 0.5);
        }
        .article-banner .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.65);
        }
        .article-banner .breadcrumb-item a:hover {
            color: var(--accent-light);
        }
        .article-banner .breadcrumb-item.active {
            color: rgba(255, 255, 255, 0.85);
        }
        .article-banner .breadcrumb-item+.breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.3);
        }
        .article-banner .category-tag {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.25rem 1rem;
            border-radius: 20px;
            margin-bottom: 1rem;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        .article-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 1rem;
            max-width: 900px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .article-banner .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            margin-top: 0.5rem;
        }
        .article-banner .meta-info span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-banner .meta-info i {
            color: var(--accent-light);
            font-size: 0.85rem;
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 60px 0 80px;
            background: var(--bg-section);
        }
        .article-content-wrapper {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 50px 56px;
            position: relative;
        }
        .article-content-wrapper .featured-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 2.5rem;
            box-shadow: var(--shadow-sm);
        }
        .article-content-wrapper .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .article-body p {
            margin-bottom: 1.6rem;
        }
        .article-body h2,
        .article-body h3 {
            color: var(--text-primary);
            font-weight: 700;
            margin-top: 2.2rem;
            margin-bottom: 1rem;
        }
        .article-body h2 {
            font-size: 1.6rem;
        }
        .article-body h3 {
            font-size: 1.3rem;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 1.6rem;
            padding-left: 1.5rem;
        }
        .article-body li {
            margin-bottom: 0.5rem;
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(232, 73, 29, 0.05);
            padding: 1.2rem 1.8rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.6rem 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.6rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover {
            color: var(--accent-dark);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 2.5rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border-color);
        }
        .article-tags .tag {
            display: inline-block;
            background: rgba(26, 42, 108, 0.06);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 500;
            padding: 0.3rem 1.2rem;
            border-radius: 20px;
            transition: var(--transition);
            border: 1px solid rgba(26, 42, 108, 0.08);
        }
        .article-tags .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
        }
        .article-share span {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .article-share .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(26, 42, 108, 0.06);
            color: var(--primary);
            font-size: 1.1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .article-share .share-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(26, 42, 108, 0.2);
        }

        /* ===== 侧边栏推荐 ===== */
        .sidebar-widget {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            margin-bottom: 28px;
        }
        .sidebar-widget h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1.2rem;
            position: relative;
            padding-bottom: 0.6rem;
            border-bottom: 2px solid var(--accent-light);
            display: inline-block;
        }
        .sidebar-widget .list-item {
            display: flex;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(26, 42, 108, 0.04);
            transition: var(--transition);
        }
        .sidebar-widget .list-item:last-child {
            border-bottom: none;
        }
        .sidebar-widget .list-item:hover {
            transform: translateX(4px);
        }
        .sidebar-widget .list-item .thumb {
            width: 70px;
            height: 54px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-section);
        }
        .sidebar-widget .list-item .info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-widget .list-item .info .title {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
        }
        .sidebar-widget .list-item .info .title:hover {
            color: var(--accent);
        }
        .sidebar-widget .list-item .info .date {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .sidebar-widget .category-list a {
            display: block;
            padding: 10px 16px;
            background: rgba(26, 42, 108, 0.03);
            border-radius: var(--radius-sm);
            margin-bottom: 8px;
            color: var(--text-secondary);
            font-weight: 500;
            transition: var(--transition);
            border-left: 3px solid transparent;
        }
        .sidebar-widget .category-list a:hover {
            background: rgba(232, 73, 29, 0.06);
            border-left-color: var(--accent);
            color: var(--accent);
            padding-left: 22px;
        }
        .sidebar-widget .category-list a i {
            margin-right: 10px;
            color: var(--accent-light);
            font-size: 0.85rem;
        }

        /* ===== 相关文章 ===== */
        .related-section {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 40px 48px;
            margin-top: 40px;
        }
        .related-section h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1.8rem;
            position: relative;
            display: inline-block;
        }
        .related-section h3::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--accent-light);
            border-radius: 4px;
        }
        .related-card {
            background: var(--bg-section);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            border: 1px solid rgba(26, 42, 108, 0.04);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .related-card .card-img {
            height: 170px;
            object-fit: cover;
            width: 100%;
        }
        .related-card .card-body {
            padding: 1.2rem 1.2rem 1.5rem;
        }
        .related-card .card-body .card-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
        }
        .related-card .card-body .card-title:hover {
            color: var(--accent);
        }
        .related-card .card-body .card-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 8px;
        }

        /* ===== 未找到 ===== */
        .not-found-container {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }
        .not-found-container .icon {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }
        .not-found-container h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.8rem;
        }
        .not-found-container p {
            color: var(--text-secondary);
            max-width: 480px;
            margin: 0 auto 2rem;
        }
        .not-found-container .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 0.8rem 2.4rem;
            border-radius: 40px;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-container .btn-home:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 73, 29, 0.3);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-footer);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 0;
            position: relative;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            display: block;
            margin-bottom: 1rem;
            letter-spacing: -0.5px;
        }
        .site-footer .footer-brand i {
            color: var(--accent-light);
        }
        .site-footer .footer-desc {
            font-size: 0.95rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 340px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 1.2rem;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-3px);
        }
        .site-footer h5 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1.2rem;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent-light);
            transform: translateX(4px);
        }
        .site-footer .footer-bottom {
            margin-top: 48px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
        }
        .site-footer .footer-bottom p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.3);
            margin: 0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199.98px) {
            .article-content-wrapper {
                padding: 36px 32px;
            }
            .related-section {
                padding: 32px 28px;
            }
        }

        @media (max-width: 991.98px) {
            .site-header {
                height: 64px;
            }
            .navbar-brand {
                font-size: 1.3rem;
            }
            .navbar-collapse {
                background: rgba(11, 15, 26, 0.98);
                backdrop-filter: blur(20px);
                border-radius: var(--radius-md);
                padding: 1rem 1.2rem;
                margin-top: 8px;
                border: 1px solid rgba(255, 255, 255, 0.06);
            }
            .navbar-nav .nav-link {
                padding: 0.7rem 1rem;
                color: rgba(255, 255, 255, 0.75);
            }
            .navbar-nav .nav-link.active::after {
                display: none;
            }
            .article-banner {
                padding: 110px 0 60px;
                min-height: 280px;
            }
            .article-banner h1 {
                font-size: 2rem;
            }
            .article-content-wrapper {
                padding: 28px 20px;
            }
            .related-section {
                padding: 28px 20px;
            }
            .sidebar-widget {
                padding: 20px 16px;
            }
        }

        @media (max-width: 767.98px) {
            .article-banner {
                padding: 100px 0 50px;
                min-height: 220px;
            }
            .article-banner h1 {
                font-size: 1.6rem;
            }
            .article-banner .meta-info {
                gap: 1rem;
                font-size: 0.8rem;
            }
            .article-content-wrapper {
                padding: 24px 16px;
                border-radius: var(--radius-md);
            }
            .article-body {
                font-size: 0.98rem;
                line-height: 1.8;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
            .related-section {
                padding: 24px 16px;
                margin-top: 28px;
            }
            .related-section h3 {
                font-size: 1.2rem;
            }
            .related-card .card-img {
                height: 140px;
            }
            .sidebar-widget .list-item .thumb {
                width: 56px;
                height: 44px;
            }
            .site-footer {
                padding: 40px 0 0;
            }
            .site-footer .footer-social a {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
            .not-found-container {
                padding: 50px 16px;
            }
            .not-found-container .icon {
                font-size: 3rem;
            }
            .not-found-container h2 {
                font-size: 1.4rem;
            }
        }

        @media (max-width: 520px) {
            .article-banner h1 {
                font-size: 1.35rem;
            }
            .article-banner .category-tag {
                font-size: 0.7rem;
                padding: 0.2rem 0.8rem;
            }
            .article-content-wrapper {
                padding: 18px 12px;
                border-radius: var(--radius-sm);
            }
            .article-body {
                font-size: 0.92rem;
            }
            .article-tags .tag {
                font-size: 0.75rem;
                padding: 0.2rem 0.9rem;
            }
            .related-card .card-img {
                height: 120px;
            }
            .related-card .card-body .card-title {
                font-size: 0.9rem;
            }
            .sidebar-widget .list-item .info .title {
                font-size: 0.82rem;
            }
            .navbar-brand {
                font-size: 1.1rem;
            }
            .navbar-brand i {
                font-size: 1.3rem;
            }
        }

        /* ===== 辅助 ===== */
        .text-accent {
            color: var(--accent-light);
        }
        .bg-accent-soft {
            background: rgba(232, 73, 29, 0.06);
        }
        .rounded-custom {
            border-radius: var(--radius-md);
        }
        .shadow-custom {
            box-shadow: var(--shadow-md);
        }
        .gap-2rem {
            gap: 2rem;
        }

        /* 滚动条美化 */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(232, 73, 29, 0.4);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(232, 73, 29, 0.6);
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-dark: #0f1a4a;
            --primary-light: #2a3f8a;
            --accent: #e8453c;
            --accent-light: #ff6b5a;
            --accent-hover: #d43a32;
            --bg-body: #f5f7fb;
            --bg-card: #ffffff;
            --bg-dark: #0f1a2e;
            --bg-section-alt: #eef1f8;
            --text-dark: #1a1e2e;
            --text-body: #3d4255;
            --text-light: #6e7488;
            --text-muted: #959bb0;
            --border-light: #e6e9f0;
            --border-card: #eef1f8;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 42, 108, 0.14);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-body);
            color: var(--text-body);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent-light);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== 导航栏 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1080;
            height: 68px;
            background: rgba(255, 255, 255, 0.72);
            backdrop-filter: blur(18px) saturate(180%);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.30);
            box-shadow: 0 2px 20px rgba(26, 42, 108, 0.06);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.94);
            box-shadow: 0 4px 30px rgba(26, 42, 108, 0.10);
            border-bottom-color: var(--border-light);
        }
        .site-header .navbar {
            padding: 0;
            height: 100%;
        }
        .site-header .navbar-brand {
            font-weight: 700;
            font-size: 1.45rem;
            color: var(--primary-dark);
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 0;
        }
        .site-header .navbar-brand i {
            font-size: 1.6rem;
            color: var(--accent);
            background: transparent;
            -webkit-text-fill-color: initial;
        }
        .site-header .navbar-brand:hover {
            color: var(--primary);
        }
        .site-header .nav-link {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-body);
            padding: 8px 18px !important;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.2px;
        }
        .site-header .nav-link:hover {
            color: var(--primary);
            background: rgba(26, 42, 108, 0.05);
        }
        .site-header .nav-link.active {
            color: var(--accent) !important;
            background: rgba(232, 69, 60, 0.08);
        }
        .site-header .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .navbar-toggler {
            border: none;
            padding: 0;
            background: transparent;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 3px solid var(--accent-light);
        }
        .navbar-toggler-icon-custom {
            display: inline-block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            border-radius: 4px;
            position: relative;
            transition: var(--transition);
        }
        .navbar-toggler-icon-custom::before,
        .navbar-toggler-icon-custom::after {
            content: '';
            position: absolute;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--text-dark);
            border-radius: 4px;
            transition: var(--transition);
        }
        .navbar-toggler-icon-custom::before {
            top: -7px;
        }
        .navbar-toggler-icon-custom::after {
            top: 7px;
        }

        @media (max-width: 991.98px) {
            .site-header {
                height: 60px;
            }
            .site-header .navbar-collapse {
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(18px);
                border-radius: var(--radius-md);
                padding: 16px 20px;
                margin-top: 10px;
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--border-light);
            }
            .site-header .nav-link {
                padding: 10px 16px !important;
            }
            .site-header .nav-link.active::after {
                display: none;
            }
            .site-header .nav-link.active {
                background: rgba(232, 69, 60, 0.10);
                border-radius: var(--radius-sm);
            }
        }

        @media (max-width: 575.98px) {
            .site-header .navbar-brand {
                font-size: 1.2rem;
            }
            .site-header .navbar-brand i {
                font-size: 1.3rem;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Banner 内页横幅 ===== */
        .page-banner {
            padding: 140px 0 72px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
            pointer-events: none;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-body), transparent);
            pointer-events: none;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner .banner-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: #fff;
            padding: 4px 18px;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .page-banner p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 620px;
            margin: 0 auto 12px;
            line-height: 1.6;
        }
        .page-banner .banner-meta {
            display: flex;
            justify-content: center;
            gap: 28px;
            flex-wrap: wrap;
            margin-top: 20px;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
        }
        .page-banner .banner-meta span i {
            margin-right: 6px;
            color: var(--accent-light);
        }

        @media (max-width: 767.98px) {
            .page-banner {
                padding: 110px 0 52px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
            .page-banner .banner-meta {
                gap: 16px;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 575.98px) {
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner p {
                font-size: 0.85rem;
            }
        }

        /* ===== 板块通用 ===== */
        .section-padding {
            padding: 80px 0;
        }
        .section-padding-sm {
            padding: 56px 0;
        }
        .section-bg-alt {
            background: var(--bg-section-alt);
        }
        .section-title-wrap {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title-wrap .section-label {
            display: inline-block;
            background: rgba(232, 69, 60, 0.08);
            color: var(--accent);
            font-weight: 600;
            font-size: 0.8rem;
            letter-spacing: 0.8px;
            padding: 4px 16px;
            border-radius: 100px;
            margin-bottom: 10px;
            text-transform: uppercase;
        }
        .section-title-wrap h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.3px;
            margin-bottom: 12px;
        }
        .section-title-wrap p {
            font-size: 1rem;
            color: var(--text-light);
            max-width: 560px;
            margin: 0 auto;
        }

        @media (max-width: 767.98px) {
            .section-padding {
                padding: 52px 0;
            }
            .section-padding-sm {
                padding: 36px 0;
            }
            .section-title-wrap h2 {
                font-size: 1.6rem;
            }
            .section-title-wrap {
                margin-bottom: 32px;
            }
        }

        /* ===== 卡片通用 ===== */
        .card {
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .card .card-img-top {
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            object-fit: cover;
            height: 200px;
            width: 100%;
        }
        .card .card-body {
            padding: 20px 22px 24px;
        }
        .card .card-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .card .card-text {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .card .card-meta i {
            color: var(--accent-light);
            margin-right: 4px;
        }
        .card .card-tag {
            display: inline-block;
            background: rgba(232, 69, 60, 0.08);
            color: var(--accent);
            font-size: 0.7rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 100px;
            letter-spacing: 0.3px;
        }

        @media (max-width: 575.98px) {
            .card .card-img-top {
                height: 160px;
            }
            .card .card-body {
                padding: 16px 18px 20px;
            }
        }

        /* ===== 特色资讯卡片（大图） ===== */
        .feature-card {
            border: none;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            background: var(--bg-card);
            height: 100%;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .feature-card .feature-img {
            height: 260px;
            object-fit: cover;
            width: 100%;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }
        .feature-card .feature-body {
            padding: 24px 26px 28px;
        }
        .feature-card .feature-cat {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 3px 14px;
            border-radius: 100px;
            letter-spacing: 0.4px;
            margin-bottom: 10px;
        }
        .feature-card .feature-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.35;
            margin-bottom: 10px;
        }
        .feature-card .feature-title a {
            color: inherit;
        }
        .feature-card .feature-title a:hover {
            color: var(--accent);
        }
        .feature-card .feature-excerpt {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .feature-card .feature-meta {
            display: flex;
            align-items: center;
            gap: 18px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .feature-card .feature-meta i {
            color: var(--accent-light);
            margin-right: 4px;
        }

        @media (max-width: 767.98px) {
            .feature-card .feature-img {
                height: 200px;
            }
            .feature-card .feature-body {
                padding: 18px 20px 22px;
            }
            .feature-card .feature-title {
                font-size: 1.1rem;
            }
        }

        /* ===== 标签筛选 ===== */
        .tag-filter {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .tag-filter .tag-btn {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-body);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            cursor: pointer;
        }
        .tag-filter .tag-btn:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(232, 69, 60, 0.04);
        }
        .tag-filter .tag-btn.active {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(232, 69, 60, 0.30);
        }

        /* ===== 热门榜单 ===== */
        .rank-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .rank-list .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .rank-list .rank-item:last-child {
            border-bottom: none;
        }
        .rank-list .rank-item:hover {
            padding-left: 8px;
        }
        .rank-list .rank-num {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.8rem;
            background: var(--bg-section-alt);
            color: var(--text-light);
            flex-shrink: 0;
        }
        .rank-list .rank-item:nth-child(1) .rank-num {
            background: var(--accent);
            color: #fff;
        }
        .rank-list .rank-item:nth-child(2) .rank-num {
            background: rgba(232, 69, 60, 0.7);
            color: #fff;
        }
        .rank-list .rank-item:nth-child(3) .rank-num {
            background: rgba(232, 69, 60, 0.4);
            color: #fff;
        }
        .rank-list .rank-info {
            flex: 1;
        }
        .rank-list .rank-title {
            font-weight: 600;
            color: var(--text-dark);
            font-size: 0.92rem;
            line-height: 1.4;
            margin-bottom: 2px;
        }
        .rank-list .rank-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .rank-list .rank-hot {
            font-size: 0.75rem;
            color: var(--accent);
            font-weight: 500;
            white-space: nowrap;
        }

        /* ===== 资讯网格 ===== */
        .news-grid .col-lg-4,
        .news-grid .col-md-6 {
            margin-bottom: 28px;
        }

        /* ===== 横向滚动专题 ===== */
        .topic-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding-bottom: 16px;
            scrollbar-width: thin;
            scrollbar-color: var(--border-light) transparent;
            -webkit-overflow-scrolling: touch;
        }
        .topic-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .topic-scroll::-webkit-scrollbar-track {
            background: transparent;
        }
        .topic-scroll::-webkit-scrollbar-thumb {
            background: var(--border-light);
            border-radius: 10px;
        }
        .topic-scroll .topic-card {
            flex: 0 0 280px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .topic-scroll .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .topic-scroll .topic-card .topic-img {
            height: 150px;
            object-fit: cover;
            width: 100%;
        }
        .topic-scroll .topic-card .topic-body {
            padding: 16px 18px 20px;
        }
        .topic-scroll .topic-card .topic-body h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .topic-scroll .topic-card .topic-body p {
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 0;
        }
        .topic-scroll .topic-card .topic-body .topic-count {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 8px;
        }

        @media (max-width: 575.98px) {
            .topic-scroll .topic-card {
                flex: 0 0 240px;
            }
            .topic-scroll .topic-card .topic-img {
                height: 120px;
            }
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            background: var(--bg-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            color: var(--text-dark);
            background: var(--bg-card);
            padding: 18px 24px;
            font-size: 1rem;
            border: none;
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--accent);
            background: rgba(232, 69, 60, 0.03);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            outline: 3px solid rgba(232, 69, 60, 0.20);
        }
        .faq-accordion .accordion-button::after {
            background-size: 16px;
            filter: brightness(0.4);
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            filter: brightness(0) saturate(100%) invert(34%) sepia(86%) saturate(1200%) hue-rotate(340deg);
        }
        .faq-accordion .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            margin: 0 auto;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
            pointer-events: none;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-section h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 24px;
            font-size: 1rem;
        }
        .cta-section .btn-cta {
            display: inline-block;
            padding: 14px 36px;
            border-radius: 100px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(232, 69, 60, 0.30);
        }
        .cta-section .btn-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(232, 69, 60, 0.40);
            color: #fff;
        }
        .cta-section .btn-cta:active {
            transform: translateY(0);
        }

        @media (max-width: 767.98px) {
            .cta-section {
                padding: 36px 24px;
                border-radius: var(--radius-md);
            }
            .cta-section h3 {
                font-size: 1.3rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .cta-section .btn-cta {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
            margin-top: 16px;
        }
        .site-footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand i {
            color: var(--accent-light);
            background: transparent;
            -webkit-text-fill-color: initial;
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            margin-bottom: 18px;
            max-width: 360px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 14px;
            margin-bottom: 20px;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: var(--transition);
            text-decoration: none;
        }
        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        .site-footer h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.88rem;
            transition: var(--transition);
            text-decoration: none;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .site-footer .footer-links span {
            color: rgba(255, 255, 255, 0.35);
            font-size: 0.85rem;
        }
        .site-footer .footer-links i {
            width: 18px;
            text-align: center;
            color: var(--accent-light);
        }
        .site-footer .footer-bottom {
            margin-top: 36px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
        }
        .site-footer .footer-bottom p {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.3);
            margin: 0;
        }
        @media (max-width: 767.98px) {
            .site-footer {
                padding: 40px 0 0;
            }
            .site-footer .footer-brand {
                font-size: 1.2rem;
            }
            .site-footer .footer-desc {
                font-size: 0.82rem;
            }
        }

        /* ===== 按钮通用 ===== */
        .btn-outline-accent {
            display: inline-block;
            padding: 10px 28px;
            border-radius: 100px;
            border: 2px solid var(--accent);
            color: var(--accent);
            font-weight: 600;
            font-size: 0.9rem;
            background: transparent;
            transition: var(--transition);
        }
        .btn-outline-accent:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(232, 69, 60, 0.25);
        }
        .btn-outline-accent:active {
            transform: translateY(0);
        }

        /* ===== 结构化数据隐藏 ===== */
        .structured-data {
            display: none;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            background: transparent;
            padding: 12px 0;
            margin-bottom: 0;
        }
        .breadcrumb-wrap .breadcrumb {
            margin-bottom: 0;
            font-size: 0.85rem;
        }
        .breadcrumb-wrap .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.6);
        }
        .breadcrumb-wrap .breadcrumb-item a:hover {
            color: #fff;
        }
        .breadcrumb-wrap .breadcrumb-item.active {
            color: rgba(255, 255, 255, 0.9);
        }
        .breadcrumb-wrap .breadcrumb-item+.breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 575.98px) {
            .breadcrumb-wrap .breadcrumb {
                font-size: 0.75rem;
            }
        }

        /* ===== 加载更多 ===== */
        .load-more-wrap {
            text-align: center;
            margin-top: 12px;
        }
        .load-more-wrap .btn-load {
            padding: 10px 36px;
            border-radius: 100px;
            border: 1px solid var(--border-light);
            background: var(--bg-card);
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.9rem;
            transition: var(--transition);
            cursor: pointer;
        }
        .load-more-wrap .btn-load:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(232, 69, 60, 0.04);
        }
        .load-more-wrap .btn-load i {
            margin-right: 6px;
        }

        /* ===== 更新条 ===== */
        .update-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 10px 20px;
            margin-bottom: 28px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-sm);
        }
        .update-bar .update-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #22c55e;
            animation: pulse-dot 2s infinite;
            flex-shrink: 0;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(0.8);
            }
        }
        .update-bar .update-text {
            font-size: 0.85rem;
            color: var(--text-light);
            flex: 1;
        }
        .update-bar .update-text strong {
            color: var(--text-dark);
        }
        .update-bar .update-time {
            font-size: 0.75rem;
            color: var(--text-muted);
            white-space: nowrap;
        }

        @media (max-width: 575.98px) {
            .update-bar {
                padding: 8px 14px;
                gap: 8px;
            }
            .update-bar .update-text {
                font-size: 0.78rem;
            }
        }

/* roulang page: category2 */
/* ============================================================
           设计变量
           ============================================================ */
        :root {
            --primary: #1a2a6c;
            --primary-dark: #0f1a4a;
            --primary-light: #2a3f8a;
            --accent: #e8491d;
            --accent-light: #ff6b3d;
            --accent-glow: rgba(232, 73, 29, 0.25);
            --bg-dark: #0b0f1a;
            --bg-card: #111827;
            --bg-card-hover: #1a2332;
            --bg-section: #0f131f;
            --bg-section-alt: #141c2a;
            --text-primary: #f1f3f8;
            --text-secondary: #b0b8cc;
            --text-muted: #6b7a99;
            --border-color: rgba(255, 255, 255, 0.06);
            --border-light: rgba(255, 255, 255, 0.10);
            --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);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --glass-bg: rgba(15, 19, 31, 0.72);
            --glass-border: rgba(255, 255, 255, 0.08);
            --nav-height: 72px;
            --transition: 0.30s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ============================================================
           基础 Reset / Base
           ============================================================ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-dark);
            overflow-x: hidden;
        }
        a {
            color: var(--accent-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: #ff8a66;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-light);
            outline-offset: 3px;
        }
        ::selection {
            background: var(--accent);
            color: #fff;
        }

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

        /* ============================================================
           导航 Header — 透明玻璃沉浸
           ============================================================ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            z-index: 1050;
            background: var(--glass-bg);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--glass-border);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11, 15, 26, 0.92);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .site-header .navbar {
            padding: 0;
            height: 100%;
        }
        .site-header .navbar-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: transform var(--transition);
        }
        .site-header .navbar-brand:hover {
            transform: scale(1.02);
            color: #fff;
        }
        .site-header .navbar-brand i {
            font-size: 1.6rem;
        }
        .site-header .nav-link {
            color: rgba(255, 255, 255, 0.70) !important;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: color var(--transition), background var(--transition);
            position: relative;
        }
        .site-header .nav-link:hover {
            color: #fff !important;
            background: rgba(255, 255, 255, 0.06);
        }
        .site-header .nav-link.active {
            color: #fff !important;
            background: rgba(232, 73, 29, 0.18);
        }
        .site-header .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent-light);
            border-radius: 4px;
        }
        .navbar-toggler {
            border: none;
            padding: 0;
            background: transparent;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.4rem;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        .navbar-toggler-icon-custom {
            display: inline-block;
            width: 22px;
            height: 2px;
            background: #fff;
            position: relative;
            transition: background var(--transition);
        }
        .navbar-toggler-icon-custom::before,
        .navbar-toggler-icon-custom::after {
            content: '';
            position: absolute;
            left: 0;
            width: 100%;
            height: 2px;
            background: #fff;
            transition: transform var(--transition);
        }
        .navbar-toggler-icon-custom::before {
            top: -7px;
        }
        .navbar-toggler-icon-custom::after {
            top: 7px;
        }
        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon-custom {
            background: transparent;
        }
        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon-custom::before {
            transform: translateY(7px) rotate(45deg);
        }
        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon-custom::after {
            transform: translateY(-7px) rotate(-45deg);
        }
        @media (max-width: 991.98px) {
            .site-header {
                --nav-height: 62px;
            }
            .site-header .navbar-collapse {
                background: rgba(11, 15, 26, 0.98);
                backdrop-filter: blur(20px);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                padding: 1rem 0.5rem;
                margin-top: 0;
                box-shadow: var(--shadow-lg);
                max-height: 90vh;
                overflow-y: auto;
            }
            .site-header .nav-link {
                padding: 0.65rem 1rem !important;
                font-size: 1rem;
            }
            .site-header .nav-link.active::after {
                bottom: 4px;
            }
        }
        @media (max-width: 575.98px) {
            .site-header .navbar-brand {
                font-size: 1.25rem;
            }
            .site-header .navbar-brand i {
                font-size: 1.3rem;
            }
        }

        /* ============================================================
           Hero / 页面横幅
           ============================================================ */
        .page-hero {
            padding-top: calc(var(--nav-height) + 40px);
            padding-bottom: 60px;
            background: linear-gradient(145deg, var(--bg-dark) 0%, var(--bg-section) 100%);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10;
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
            pointer-events: none;
        }
        .page-hero .hero-content {
            position: relative;
            z-index: 2;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(232, 73, 29, 0.15);
            color: var(--accent-light);
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(232, 73, 29, 0.20);
            margin-bottom: 18px;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.18;
            color: #fff;
            margin-bottom: 16px;
        }
        .page-hero h1 span {
            color: var(--accent-light);
        }
        .page-hero .hero-sub {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 620px;
            line-height: 1.7;
        }
        .page-hero .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 28px;
        }
        .page-hero .hero-stats .stat-item {
            display: flex;
            flex-direction: column;
        }
        .page-hero .hero-stats .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .page-hero .hero-stats .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        @media (max-width: 767.98px) {
            .page-hero {
                min-height: 240px;
                padding-top: calc(var(--nav-height) + 24px);
                padding-bottom: 40px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero .hero-sub {
                font-size: 0.95rem;
            }
            .page-hero .hero-stats .stat-num {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 575.98px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero .hero-stats {
                gap: 16px;
            }
        }

        /* ============================================================
           通用板块
           ============================================================ */
        .section-block {
            padding: 70px 0;
        }
        .section-block-alt {
            background: var(--bg-section-alt);
        }
        .section-block-dark {
            background: var(--bg-dark);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header .section-tag {
            display: inline-block;
            background: rgba(232, 73, 29, 0.12);
            color: var(--accent-light);
            padding: 2px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
            border: 1px solid rgba(232, 73, 29, 0.15);
        }
        @media (max-width: 767.98px) {
            .section-block {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
            .section-header {
                margin-bottom: 28px;
            }
        }

        /* ============================================================
           卡片
           ============================================================ */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-light);
        }
        .card-custom .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #0a0e18;
        }
        .card-custom .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card-custom:hover .card-img-wrap img {
            transform: scale(1.05);
        }
        .card-custom .card-img-wrap .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 12px;
            border-radius: 30px;
            letter-spacing: 0.3px;
            z-index: 2;
        }
        .card-custom .card-img-wrap .card-tag.tag-blue {
            background: var(--primary-light);
        }
        .card-custom .card-img-wrap .card-tag.tag-green {
            background: #1d8a4f;
        }
        .card-custom .card-body {
            padding: 20px 22px 24px;
        }
        .card-custom .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .card-custom .card-meta i {
            margin-right: 4px;
        }
        .card-custom .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.4;
            transition: color var(--transition);
        }
        .card-custom:hover .card-title {
            color: var(--accent-light);
        }
        .card-custom .card-text {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-custom .card-footer-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-light);
            transition: gap var(--transition);
        }
        .card-custom .card-footer-link:hover {
            gap: 12px;
            color: #ff8a66;
        }
        @media (max-width: 575.98px) {
            .card-custom .card-body {
                padding: 16px 16px 20px;
            }
            .card-custom .card-title {
                font-size: 1rem;
            }
        }

        /* ============================================================
           特色文章 / 大图卡片
           ============================================================ */
        .feature-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 360px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .feature-card .feature-bg {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.4;
            transition: opacity 0.5s ease;
        }
        .feature-card:hover .feature-bg {
            opacity: 0.55;
        }
        .feature-card .feature-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 15, 26, 0.92) 20%, rgba(11, 15, 26, 0.30) 70%);
            z-index: 1;
        }
        .feature-card .feature-content {
            position: relative;
            z-index: 2;
            padding: 32px 30px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            height: 100%;
            min-height: 360px;
        }
        .feature-card .feature-tag {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 14px;
            border-radius: 30px;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .feature-card .feature-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .feature-card .feature-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 480px;
            line-height: 1.6;
        }
        .feature-card .feature-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 10px;
            display: flex;
            gap: 16px;
        }
        @media (max-width: 767.98px) {
            .feature-card {
                min-height: 280px;
            }
            .feature-card .feature-content {
                min-height: 280px;
                padding: 24px 20px;
            }
            .feature-card .feature-title {
                font-size: 1.2rem;
            }
            .feature-card .feature-desc {
                font-size: 0.85rem;
            }
        }

        /* ============================================================
           标签 / 分类筛选
           ============================================================ */
        .tag-filter {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 32px;
        }
        .tag-filter .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-card);
            color: var(--text-secondary);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: all var(--transition);
        }
        .tag-filter .tag-item:hover {
            background: var(--bg-card-hover);
            color: #fff;
            border-color: var(--border-light);
        }
        .tag-filter .tag-item.active {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .tag-filter .tag-item i {
            font-size: 0.75rem;
        }

        /* ============================================================
           热门排行
           ============================================================ */
        .rank-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .rank-list .rank-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition);
        }
        .rank-list .rank-item:last-child {
            border-bottom: none;
        }
        .rank-list .rank-item:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .rank-list .rank-num {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-muted);
            min-width: 32px;
            line-height: 1.4;
        }
        .rank-list .rank-item:nth-child(1) .rank-num {
            color: #f7c948;
        }
        .rank-list .rank-item:nth-child(2) .rank-num {
            color: #b0b8cc;
        }
        .rank-list .rank-item:nth-child(3) .rank-num {
            color: #cd7f4b;
        }
        .rank-list .rank-info {
            flex: 1;
        }
        .rank-list .rank-info .rank-title {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 2px;
            transition: color var(--transition);
        }
        .rank-list .rank-item:hover .rank-title {
            color: var(--accent-light);
        }
        .rank-list .rank-info .rank-desc {
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .rank-list .rank-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            white-space: nowrap;
            margin-top: 4px;
        }
        @media (max-width: 575.98px) {
            .rank-list .rank-item {
                gap: 12px;
                padding: 12px 0;
            }
            .rank-list .rank-num {
                font-size: 1.1rem;
                min-width: 26px;
            }
            .rank-list .rank-info .rank-title {
                font-size: 0.92rem;
            }
        }

        /* ============================================================
           CTA 区块
           ============================================================ */
        .cta-block {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--bg-section) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 50px;
            border: 1px solid var(--border-light);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(232, 73, 29, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-block h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-block p {
            color: var(--text-secondary);
            font-size: 1rem;
            max-width: 560px;
            margin-bottom: 20px;
        }
        .cta-block .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            padding: 12px 34px;
            border-radius: 50px;
            font-size: 1rem;
            border: none;
            transition: all var(--transition);
            box-shadow: 0 4px 20px var(--accent-glow);
        }
        .cta-block .btn-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(232, 73, 29, 0.35);
            color: #fff;
        }
        .cta-block .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 1rem;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .cta-block .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: var(--text-secondary);
            color: #fff;
        }
        @media (max-width: 767.98px) {
            .cta-block {
                padding: 36px 24px;
            }
            .cta-block h3 {
                font-size: 1.3rem;
            }
            .cta-block .btn-cta,
            .cta-block .btn-cta-outline {
                width: 100%;
                justify-content: center;
                margin-bottom: 10px;
            }
        }

        /* ============================================================
           FAQ
           ============================================================ */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-question {
            font-size: 1.05rem;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            user-select: none;
        }
        .faq-item .faq-question i {
            color: var(--accent-light);
            font-size: 0.9rem;
            transition: transform var(--transition);
        }
        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding-top: 12px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            border-top: 1px solid var(--border-color);
            margin-top: 12px;
        }
        @media (max-width: 575.98px) {
            .faq-item {
                padding: 16px 16px;
            }
            .faq-item .faq-question {
                font-size: 0.95rem;
            }
        }

        /* ============================================================
           页脚 Footer
           ============================================================ */
        .site-footer {
            background: #070a12;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 56px 0 30px;
        }
        .site-footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.45);
            line-height: 1.7;
            max-width: 340px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.5);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        .site-footer h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.88rem;
            transition: color var(--transition), padding-left var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            margin-top: 36px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
        }
        .site-footer .footer-bottom p {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.25);
            margin: 0;
        }
        @media (max-width: 767.98px) {
            .site-footer {
                padding: 40px 0 24px;
            }
            .site-footer .footer-brand {
                font-size: 1.2rem;
            }
            .site-footer h5 {
                margin-top: 8px;
            }
        }

        /* ============================================================
           辅助
           ============================================================ */
        .text-accent {
            color: var(--accent-light) !important;
        }
        .bg-accent-soft {
            background: rgba(232, 73, 29, 0.08);
        }
        .border-accent {
            border-color: rgba(232, 73, 29, 0.25) !important;
        }
        .gap-2 {
            gap: 8px;
        }
        .gap-3 {
            gap: 16px;
        }
        .gap-4 {
            gap: 24px;
        }
        .mb-0 {
            margin-bottom: 0 !important;
        }
        .mt-2 {
            margin-top: 8px;
        }
        .mt-3 {
            margin-top: 16px;
        }
        .mt-4 {
            margin-top: 24px;
        }
        .mb-3 {
            margin-bottom: 16px;
        }
        .mb-4 {
            margin-bottom: 24px;
        }

        /* ============================================================
           响应式微调
           ============================================================ */
        @media (max-width: 991.98px) {
            .hero-stats {
                gap: 20px !important;
            }
        }
        @media (max-width: 575.98px) {
            .tag-filter .tag-item {
                font-size: 0.78rem;
                padding: 4px 14px;
            }
            .page-hero .hero-badge {
                font-size: 0.75rem;
                padding: 2px 12px;
            }
        }
        @media (min-width: 992px) {
            .navbar-nav .nav-item+.nav-item {
                margin-left: 4px;
            }
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1a2e;
            --primary-light: #1a2d4a;
            --accent: #e84c3d;
            --accent-light: #ff6b5a;
            --accent-dark: #c0392b;
            --bg-dark: #0b1320;
            --bg-card: #132033;
            --bg-section: #0f1a2e;
            --text-light: #f0f2f5;
            --text-muted: #8a9bb5;
            --text-body: #c8d0dc;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.12);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --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 16px 48px rgba(0, 0, 0, 0.5);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1280px;
            --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-body);
            line-height: 1.7;
            font-size: 1rem;
            overflow-x: hidden;
        }

        a {
            color: var(--accent-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #ff8a7a;
            text-decoration: none;
        }

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

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

        ::selection {
            background: var(--accent);
            color: #fff;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--header-height);
            background: rgba(11, 19, 32, 0.72);
            backdrop-filter: blur(18px) saturate(180%);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .site-header.scrolled {
            background: rgba(11, 19, 32, 0.94);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .navbar {
            padding: 0;
            height: 100%;
        }

        .navbar-brand {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-light) !important;
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
        }
        .navbar-brand i {
            font-size: 1.4rem;
            color: var(--accent-light);
        }
        .navbar-brand:hover {
            color: var(--text-light) !important;
        }

        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.7) !important;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 18px !important;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.2px;
        }
        .navbar-nav .nav-link:hover {
            color: var(--text-light) !important;
            background: rgba(255, 255, 255, 0.06);
        }
        .navbar-nav .nav-link.active {
            color: var(--accent-light) !important;
            background: rgba(232, 76, 61, 0.12);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent-light);
            border-radius: 4px;
        }

        .navbar-toggler {
            border: none;
            padding: 4px 8px;
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        .navbar-toggler-icon-custom {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-light);
            position: relative;
            transition: var(--transition);
        }
        .navbar-toggler-icon-custom::before,
        .navbar-toggler-icon-custom::after {
            content: '';
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-light);
            position: absolute;
            left: 0;
            transition: var(--transition);
        }
        .navbar-toggler-icon-custom::before {
            top: -7px;
        }
        .navbar-toggler-icon-custom::after {
            top: 7px;
        }

        /* ===== Hero ===== */
        .community-hero {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: calc(var(--header-height) + 40px) 0 80px;
            background: linear-gradient(160deg, #0b1320 0%, #132033 40%, #1a2d4a 100%);
            overflow: hidden;
            text-align: center;
        }
        .community-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .community-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(232, 76, 61, 0.12) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 60%, rgba(232, 76, 61, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }
        .community-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .community-hero .hero-badge {
            display: inline-block;
            background: rgba(232, 76, 61, 0.18);
            color: var(--accent-light);
            padding: 6px 22px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            border: 1px solid rgba(232, 76, 61, 0.25);
        }
        .community-hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .community-hero h1 span {
            background: linear-gradient(135deg, var(--accent-light), #f39c12);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .community-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .community-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .community-hero .btn-primary-custom {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(232, 76, 61, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .community-hero .btn-primary-custom:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(232, 76, 61, 0.4);
            color: #fff;
        }
        .community-hero .btn-outline-custom {
            background: transparent;
            color: var(--text-light);
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .community-hero .btn-outline-custom:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.5);
            color: var(--text-light);
            transform: translateY(-2px);
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: 80px 0;
            position: relative;
        }
        .section-block.bg-section {
            background: var(--bg-section);
        }
        .section-block.bg-card-bg {
            background: var(--bg-card);
        }
        .section-block .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-block .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 48px;
            text-align: center;
        }
        .section-block .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-block .section-header .section-tag {
            display: inline-block;
            background: rgba(232, 76, 61, 0.12);
            color: var(--accent-light);
            padding: 4px 18px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            border: 1px solid rgba(232, 76, 61, 0.15);
        }

        /* ===== 社区特色卡片 ===== */
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card:hover {
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .feature-card .icon-wrap {
            width: 52px;
            height: 52px;
            background: rgba(232, 76, 61, 0.12);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            font-size: 1.5rem;
            color: var(--accent-light);
            transition: var(--transition);
        }
        .feature-card:hover .icon-wrap {
            background: rgba(232, 76, 61, 0.2);
            transform: scale(1.05);
        }
        .feature-card h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 热门话题卡片 ===== */
        .topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .topic-card:hover {
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .topic-card .topic-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        .topic-card .topic-body {
            padding: 20px 22px 24px;
        }
        .topic-card .topic-body .topic-tag {
            display: inline-block;
            background: rgba(232, 76, 61, 0.12);
            color: var(--accent-light);
            padding: 2px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
            border: 1px solid rgba(232, 76, 61, 0.15);
        }
        .topic-card .topic-body h5 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .topic-card .topic-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .topic-card .topic-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .topic-card .topic-meta i {
            margin-right: 4px;
        }
        .topic-card .topic-meta span {
            display: flex;
            align-items: center;
        }

        /* ===== 社区数据 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: var(--border-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-light), #f39c12);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 6px;
            font-weight: 500;
        }

        /* ===== 社区指南 ===== */
        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: var(--transition);
            height: 100%;
        }
        .guide-card:hover {
            border-color: var(--border-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .guide-card .guide-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-light);
            opacity: 0.5;
            line-height: 1;
            min-width: 40px;
        }
        .guide-card .guide-content h5 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 6px;
        }
        .guide-card .guide-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .faq-accordion .accordion-button {
            background: var(--bg-card);
            color: var(--text-light);
            font-weight: 600;
            font-size: 1rem;
            padding: 18px 24px;
            border: none;
            box-shadow: none;
        }
        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23e84c3d'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(232, 76, 61, 0.06);
            color: var(--accent-light);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--border-color);
        }
        .faq-accordion .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-accordion .accordion-body strong {
            color: var(--text-light);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(160deg, #132033 0%, #1a2d4a 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.06;
            mix-blend-mode: overlay;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 20px;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.65);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-cta {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(232, 76, 61, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .btn-cta:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(232, 76, 61, 0.4);
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #080e18;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
            color: rgba(255, 255, 255, 0.6);
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.45);
            line-height: 1.7;
            margin-bottom: 18px;
            max-width: 360px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 12px;
        }
        .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);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        .site-footer h5 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 18px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.3);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .community-hero h1 {
                font-size: 2.6rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .site-header .navbar-brand {
                font-size: 1.1rem;
            }
            .navbar-nav .nav-link {
                padding: 10px 16px !important;
                font-size: 0.9rem;
            }
            .navbar-nav .nav-link.active::after {
                display: none;
            }
            .community-hero {
                min-height: 60vh;
                padding: calc(var(--header-height) + 30px) 0 60px;
            }
            .community-hero h1 {
                font-size: 2rem;
            }
            .community-hero p {
                font-size: 1rem;
            }
            .community-hero .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .community-hero .btn-primary-custom,
            .community-hero .btn-outline-custom {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
            .section-block {
                padding: 60px 0;
            }
            .section-block .section-title {
                font-size: 1.6rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                padding: 20px 16px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
            .guide-card {
                flex-direction: column;
                gap: 8px;
                padding: 20px;
            }
            .guide-card .guide-num {
                font-size: 1.6rem;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section .cta-content {
                padding: 40px 16px;
            }
            .site-footer .footer-brand {
                font-size: 1.1rem;
            }
            .site-footer {
                padding: 40px 0 0;
            }
        }

        @media (max-width: 520px) {
            .community-hero h1 {
                font-size: 1.6rem;
            }
            .community-hero .hero-badge {
                font-size: 0.75rem;
                padding: 4px 16px;
            }
            .section-block .section-title {
                font-size: 1.3rem;
            }
            .section-block .section-subtitle {
                font-size: 0.9rem;
                margin-bottom: 32px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .stat-number {
                font-size: 1.6rem;
            }
            .stat-item .stat-label {
                font-size: 0.8rem;
            }
            .feature-card {
                padding: 24px 20px;
            }
            .feature-card h4 {
                font-size: 1.05rem;
            }
            .topic-card .topic-body {
                padding: 16px 18px 20px;
            }
            .topic-card .topic-body h5 {
                font-size: 0.95rem;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .cta-section .btn-cta {
                padding: 12px 28px;
                font-size: 0.95rem;
                width: 100%;
                max-width: 260px;
                justify-content: center;
            }
            .faq-accordion .accordion-button {
                font-size: 0.9rem;
                padding: 14px 18px;
            }
            .faq-accordion .accordion-body {
                font-size: 0.85rem;
                padding: 0 18px 16px;
            }
        }

        /* ===== 滚动吸顶 ===== */
        .site-header.scrolled {
            background: rgba(11, 19, 32, 0.94);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }