/* roulang page: index */
/* ============================
               设计变量
            ============================ */
        :root {
            --primary: #0f3b2a;
            --primary-light: #1a5a3a;
            --primary-dark: #0a2a1e;
            --accent: #f0a030;
            --accent-light: #f5b84a;
            --accent-dark: #d48a20;
            --bg: #f4f7f5;
            --bg-white: #ffffff;
            --bg-dark: #0a2a1e;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-lighter: #9ca3af;
            --text-white: #ffffff;
            --border: #e5e7eb;
            --border-light: #f0f2f0;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.15);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --container: 1200px;
            --container-narrow: 960px;
            --header-height: 72px;
            --section-gap: 90px;
            --section-gap-mobile: 56px;
        }

        /* ============================
               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: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul, ol {
            list-style: none;
        }
        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        p {
            margin-bottom: 1em;
        }
        p:last-child {
            margin-bottom: 0;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: var(--container-narrow);
            margin: 0 auto;
            padding: 0 24px;
        }
        section {
            padding: var(--section-gap) 0;
        }
        @media (max-width: 768px) {
            section {
                padding: var(--section-gap-mobile) 0;
            }
            .container {
                padding: 0 16px;
            }
            .container-narrow {
                padding: 0 16px;
            }
        }

        /* ============================
               按钮
            ============================ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            transition: all var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(240, 160, 48, 0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(240, 160, 48, 0.25);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: var(--text-white);
        }
        .btn-outline:hover {
            background: var(--text-white);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-dark {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
        }
        .btn-dark:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 59, 42, 0.3);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 17px;
        }
        .btn:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        /* ============================
               标签 / 徽章
            ============================ */
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            background: rgba(15, 59, 42, 0.1);
            color: var(--primary);
            transition: all var(--transition);
        }
        .tag-accent {
            background: rgba(240, 160, 48, 0.15);
            color: var(--accent-dark);
        }
        .tag-light {
            background: rgba(255, 255, 255, 0.2);
            color: var(--text-white);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 22px;
            height: 22px;
            padding: 0 8px;
            border-radius: 100px;
            font-size: 11px;
            font-weight: 700;
            background: var(--accent);
            color: var(--primary-dark);
        }

        /* ============================
               卡片
            ============================ */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 20px 22px 24px;
        }
        .card-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-title a:hover {
            color: var(--accent);
        }
        .card-text {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-lighter);
        }
        .card-meta i {
            margin-right: 4px;
        }

        /* ============================
               导航 / Header
            ============================ */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(15, 59, 42, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 18px;
        }
        .logo span {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.9;
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            display: flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            transition: all var(--transition);
            position: relative;
        }
        .nav a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.1);
        }
        .nav a.active {
            color: var(--text-white);
            background: rgba(240, 160, 48, 0.2);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        .nav-cta {
            background: var(--accent) !important;
            color: var(--primary-dark) !important;
            font-weight: 700 !important;
            padding: 8px 22px !important;
            border-radius: var(--radius-sm) !important;
        }
        .nav-cta:hover {
            background: var(--accent-light) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(240, 160, 48, 0.3);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-white);
            font-size: 20px;
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        @media (max-width: 768px) {
            .nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(10, 42, 30, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition);
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                box-shadow: var(--shadow-lg);
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
            }
            .nav a.active::after {
                display: none;
            }
            .nav a.active {
                background: rgba(240, 160, 48, 0.15);
                border-left: 3px solid var(--accent);
            }
            .nav-cta {
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }
            .hamburger {
                display: flex;
            }
        }

        /* ============================
               Hero 首屏
            ============================ */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            background: var(--primary-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero:hover .hero-bg {
            transform: scale(1);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 42, 30, 0.88) 0%, rgba(15, 59, 42, 0.7) 50%, rgba(10, 42, 30, 0.88) 100%);
        }
        .hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 20px;
            border-radius: 100px;
            background: rgba(240, 160, 48, 0.2);
            color: var(--accent-light);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(240, 160, 48, 0.15);
        }
        .hero-title {
            font-size: clamp(36px, 6vw, 64px);
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-title span {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: clamp(16px, 2vw, 20px);
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 48px;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-stat {
            text-align: center;
            color: var(--text-white);
        }
        .hero-stat-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 70vh;
                padding: 100px 0 60px;
            }
            .hero-stats {
                flex-wrap: wrap;
                gap: 24px;
            }
            .hero-stat {
                flex: 1 1 80px;
            }
            .hero-stat-num {
                font-size: 24px;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 28px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }
            .hero-stats {
                gap: 16px;
            }
        }

        /* ============================
               板块通用标题
            ============================ */
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header-left {
            text-align: left;
            margin-bottom: 40px;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 4px 16px;
            border-radius: 100px;
            background: rgba(15, 59, 42, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .section-title {
            font-size: clamp(28px, 3.5vw, 38px);
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-header-left .section-sub {
            margin: 0;
        }
        @media (max-width: 768px) {
            .section-header {
                margin-bottom: 32px;
            }
            .section-header-left {
                margin-bottom: 28px;
            }
            .section-title {
                font-size: 24px;
            }
        }

        /* ============================
               特色板块
            ============================ */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            border-radius: 16px;
            background: rgba(15, 59, 42, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--primary);
            transition: all var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: var(--text-white);
        }
        .feature-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .feature-text {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .feature-card {
                padding: 28px 20px 24px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ============================
               分类入口
            ============================ */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 240px;
            display: flex;
            align-items: flex-end;
            background: var(--primary-dark);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .category-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .category-card-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/coverpic/cover-1.png') center center / cover no-repeat;
            opacity: 0.4;
            transition: transform var(--transition-slow), opacity var(--transition);
        }
        .category-card:nth-child(2) .category-card-bg {
            background-image: url('/assets/images/coverpic/cover-2.png');
        }
        .category-card:hover .category-card-bg {
            transform: scale(1.08);
            opacity: 0.55;
        }
        .category-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 42, 30, 0.92) 0%, rgba(10, 42, 30, 0.2) 70%, transparent 100%);
        }
        .category-card-body {
            position: relative;
            z-index: 2;
            padding: 28px 24px 24px;
            width: 100%;
        }
        .category-card-title {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 6px;
        }
        .category-card-text {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .category-card .btn {
            font-size: 13px;
            padding: 8px 20px;
        }
        @media (max-width: 768px) {
            .category-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .category-card {
                min-height: 200px;
            }
            .category-card-body {
                padding: 20px 18px 18px;
            }
            .category-card-title {
                font-size: 18px;
            }
        }

        /* ============================
               最新资讯列表 (CMS)
            ============================ */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
        }
        .news-item-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(15, 59, 42, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
        }
        .news-item-content {
            flex: 1;
            min-width: 0;
        }
        .news-item-title {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 4px;
        }
        .news-item-title a {
            color: var(--text);
        }
        .news-item-title a:hover {
            color: var(--accent);
        }
        .news-item-desc {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 6px;
        }
        .news-item-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 12px;
            color: var(--text-lighter);
        }
        .news-item-meta .tag {
            font-size: 11px;
            padding: 2px 10px;
        }
        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-light);
            font-size: 15px;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px dashed var(--border);
        }
        .news-empty i {
            font-size: 40px;
            color: var(--text-lighter);
            margin-bottom: 16px;
            display: block;
        }
        @media (max-width: 768px) {
            .news-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px 18px;
            }
            .news-item-icon {
                width: 40px;
                height: 40px;
                font-size: 16px;
            }
            .news-item-title {
                font-size: 15px;
            }
            .news-item-meta {
                flex-wrap: wrap;
                gap: 8px;
            }
        }

        /* ============================
               推荐内容 (封面图卡片)
            ============================ */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .recommend-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .recommend-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
        }
        .recommend-card-img {
            width: 100%;
            aspect-ratio: 16 / 11;
            object-fit: cover;
            display: block;
            transition: transform var(--transition-slow);
        }
        .recommend-card:hover .recommend-card-img {
            transform: scale(1.05);
        }
        .recommend-card-body {
            padding: 18px 20px 22px;
        }
        .recommend-card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 100px;
            font-size: 11px;
            font-weight: 600;
            background: rgba(240, 160, 48, 0.12);
            color: var(--accent-dark);
            margin-bottom: 8px;
        }
        .recommend-card-title {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 6px;
        }
        .recommend-card-text {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .recommend-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .recommend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ============================
               数据统计
            ============================ */
        .stats-section {
            background: var(--primary-dark);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 1;
        }
        .stat-item {
            text-align: center;
            padding: 24px 16px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }
        .stat-item-num {
            font-size: 40px;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-item-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item-num {
                font-size: 28px;
            }
            .stat-item {
                padding: 16px 12px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-item-num {
                font-size: 22px;
            }
            .stat-item-label {
                font-size: 12px;
            }
        }

        /* ============================
               FAQ
            ============================ */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: transparent;
            width: 100%;
            text-align: left;
            border: none;
            cursor: pointer;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: rgba(15, 59, 42, 0.03);
        }
        .faq-question:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: -3px;
        }
        .faq-question i {
            font-size: 14px;
            color: var(--text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition), padding var(--transition);
            padding: 0 24px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        @media (max-width: 768px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 14px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* ============================
               CTA
            ============================ */
        .cta-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.06;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-title {
            font-size: clamp(26px, 3vw, 36px);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        .cta-text {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        /* ============================
               页脚
            ============================ */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 16px;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: all var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .footer {
                padding: 40px 0 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-desc {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ============================
               分隔线 / 装饰
            ============================ */
        .divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            margin: 0 auto 16px;
        }
        .divider-left {
            margin: 0 0 16px 0;
        }

        /* ============================
               响应式微调
            ============================ */
        @media (max-width: 520px) {
            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }
            .hero-title {
                font-size: 24px;
            }
            .hero-sub {
                font-size: 14px;
            }
            .section-title {
                font-size: 22px;
            }
            .card-title {
                font-size: 16px;
            }
        }

        /* ============================
               可访问性
            ============================ */
        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after {
                transition-duration: 0.01ms !important;
                animation-duration: 0.01ms !important;
            }
        }
        .skip-link {
            position: absolute;
            top: -100px;
            left: 16px;
            background: var(--accent);
            color: var(--primary-dark);
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            z-index: 9999;
            transition: top var(--transition);
        }
        .skip-link:focus {
            top: 16px;
        }

/* roulang page: article */
:root {
            --primary: #0f1b3d;
            --primary-light: #1a2d5e;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --accent-light: #fef3c7;
            --bg: #f0f2f5;
            --bg-card: #ffffff;
            --text: #1f2937;
            --text-weak: #6b7280;
            --border: #e5e7eb;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --font: '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; }
        body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.7; font-size: 1rem; }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent-hover); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .container-narrow { max-width: 860px; margin: 0 auto; padding: 0 20px; }

        /* Header & Nav */
        .header {
            background: var(--primary);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(15,27,61,0.25);
            border-bottom: 2px solid var(--accent);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: -0.3px;
            transition: opacity var(--transition);
        }
        .logo:hover { color: #fff; opacity: 0.88; }
        .logo-icon {
            background: var(--accent);
            color: var(--primary);
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        .logo span { color: var(--accent); font-weight: 300; }
        .nav { display: flex; align-items: center; gap: 6px; }
        .nav a {
            color: rgba(255,255,255,0.78);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav a:hover { color: #fff; background: rgba(255,255,255,0.10); }
        .nav a.active { color: #fff; background: var(--accent); }
        .nav a.active:hover { background: var(--accent-hover); }
        .nav-cta {
            background: transparent !important;
            border: 1.5px solid var(--accent) !important;
            color: var(--accent) !important;
            padding: 8px 22px !important;
            border-radius: 30px !important;
            font-weight: 600 !important;
        }
        .nav-cta:hover { background: var(--accent) !important; color: var(--primary) !important; border-color: var(--accent) !important; }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .nav-toggle:hover { background: rgba(255,255,255,0.10); }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background: var(--primary-light);
            padding: 16px 20px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .mobile-menu a {
            color: rgba(255,255,255,0.78);
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
        }
        .mobile-menu a:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .mobile-menu a.active { color: #fff; background: var(--accent); }
        .mobile-menu .nav-cta-mobile {
            border: 1.5px solid var(--accent);
            color: var(--accent) !important;
            background: transparent !important;
            text-align: center;
            margin-top: 6px;
        }
        .mobile-menu .nav-cta-mobile:hover { background: var(--accent) !important; color: var(--primary) !important; }

        /* Article Hero */
        .article-hero {
            background: var(--primary);
            padding: 50px 0 40px;
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.10;
            pointer-events: none;
        }
        .article-hero .container-narrow { position: relative; z-index: 1; }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 20px;
            margin-bottom: 18px;
            color: rgba(255,255,255,0.7);
            font-size: 0.88rem;
        }
        .article-meta .badge-cat {
            background: var(--accent);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.8rem;
            letter-spacing: 0.3px;
        }
        .article-meta i { margin-right: 5px; }
        .article-hero h1 {
            color: #fff;
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 6px;
            letter-spacing: -0.5px;
        }
        .article-hero .lead {
            color: rgba(255,255,255,0.7);
            font-size: 1.05rem;
            margin-top: 10px;
        }

        /* Article Body */
        .article-body-wrap {
            padding: 50px 0 60px;
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px 52px;
            box-shadow: var(--shadow-md);
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-content p { margin-bottom: 1.4em; }
        .article-content h2, .article-content h3 { margin-top: 1.8em; margin-bottom: 0.6em; font-weight: 600; color: var(--primary); }
        .article-content h2 { font-size: 1.6rem; }
        .article-content h3 { font-size: 1.25rem; }
        .article-content ul, .article-content ol { margin-bottom: 1.4em; padding-left: 1.6em; }
        .article-content li { margin-bottom: 0.4em; }
        .article-content img { border-radius: var(--radius); margin: 1.6em 0; box-shadow: var(--shadow-sm); }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: var(--accent-light);
            padding: 16px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.6em 0;
            font-style: italic;
            color: var(--text-weak);
        }
        .article-content a { color: var(--accent-hover); text-decoration: underline; text-underline-offset: 2px; }

        /* Article Footer */
        .article-footer {
            margin-top: 32px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-tags .tag {
            background: var(--bg);
            color: var(--text-weak);
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.82rem;
            font-weight: 500;
            transition: all var(--transition);
        }
        .article-tags .tag:hover { background: var(--accent-light); color: var(--accent-hover); }
        .share-buttons {
            display: flex;
            gap: 8px;
        }
        .share-buttons a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg);
            color: var(--text-weak);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
            transition: all var(--transition);
        }
        .share-buttons a:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }

        /* Related */
        .related-section {
            padding: 50px 0;
            background: var(--bg);
        }
        .related-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 28px;
            position: relative;
            display: inline-block;
        }
        .related-section h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
            margin-top: 6px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .related-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .related-card img { width: 100%; height: 160px; object-fit: cover; border-radius: 0; }
        .related-card-body { padding: 16px 20px 20px; }
        .related-card-body .cat-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent-hover);
            font-size: 0.72rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 30px;
            margin-bottom: 8px;
            text-transform: uppercase;
            letter-spacing: 0.3px;
        }
        .related-card-body h3 { font-size: 1.02rem; font-weight: 600; margin-bottom: 6px; line-height: 1.4; }
        .related-card-body h3 a { color: var(--text); }
        .related-card-body h3 a:hover { color: var(--accent-hover); }
        .related-card-body .time { color: var(--text-weak); font-size: 0.82rem; }

        /* CTA */
        .cta-section {
            background: var(--primary);
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { color: #fff; font-size: 1.9rem; font-weight: 700; margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 600px; margin: 0 auto 24px; }
        .cta-btn {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            padding: 14px 40px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-btn:hover { background: var(--accent-hover); color: var(--primary); transform: scale(1.03); box-shadow: 0 8px 28px rgba(245,158,11,0.30); }

        /* 404 state */
        .not-found-wrap {
            text-align: center;
            padding: 80px 20px 100px;
        }
        .not-found-wrap .big-icon { font-size: 4rem; color: var(--accent); margin-bottom: 20px; }
        .not-found-wrap h1 { font-size: 1.8rem; color: var(--primary); margin-bottom: 10px; }
        .not-found-wrap p { color: var(--text-weak); font-size: 1.05rem; margin-bottom: 24px; }
        .not-found-wrap .back-home {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 600;
            transition: all var(--transition);
        }
        .not-found-wrap .back-home:hover { background: var(--accent-hover); color: var(--primary); }

        /* Footer */
        .footer {
            background: var(--primary);
            color: rgba(255,255,255,0.75);
            padding: 50px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo { font-size: 1.3rem; margin-bottom: 14px; display: inline-flex; }
        .footer-desc { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.6); margin-bottom: 18px; max-width: 360px; }
        .footer-social { display: flex; gap: 10px; }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.7);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
            transition: all var(--transition);
        }
        .footer-social a:hover { background: var(--accent); color: var(--primary); transform: translateY(-2px); }
        .footer-heading { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 16px; letter-spacing: 0.3px; }
        .footer-links { display: flex; flex-direction: column; gap: 10px; }
        .footer-links a { color: rgba(255,255,255,0.6); font-size: 0.9rem; transition: all var(--transition); }
        .footer-links a:hover { color: var(--accent); padding-left: 4px; }
        .footer-links a i { width: 20px; margin-right: 6px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.84rem;
            color: rgba(255,255,255,0.45);
            flex-wrap: wrap;
            gap: 8px;
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            padding: 16px 0 0;
            background: var(--primary);
        }
        .breadcrumb-wrap .container-narrow {
            display: flex;
            align-items: center;
            gap: 6px;
            color: rgba(255,255,255,0.55);
            font-size: 0.84rem;
        }
        .breadcrumb-wrap a { color: rgba(255,255,255,0.7); }
        .breadcrumb-wrap a:hover { color: var(--accent); }
        .breadcrumb-wrap .sep { color: rgba(255,255,255,0.3); }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
        }
        @media (max-width: 768px) {
            .nav { display: none; }
            .nav-toggle { display: block; }
            .mobile-menu.open { display: flex; }
            .header-inner { height: 60px; }
            .logo { font-size: 1.15rem; }
            .logo-icon { width: 32px; height: 32px; font-size: 0.9rem; }
            .article-hero { padding: 30px 0 28px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-hero .lead { font-size: 0.95rem; }
            .article-content { padding: 28px 22px; font-size: 0.98rem; }
            .article-body-wrap { padding: 30px 0 40px; }
            .related-grid { grid-template-columns: 1fr 1fr; }
            .cta-section h2 { font-size: 1.5rem; }
            .cta-section p { font-size: 0.98rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 14px; }
            .article-hero h1 { font-size: 1.3rem; }
            .article-meta { font-size: 0.8rem; gap: 8px 14px; }
            .article-content { padding: 20px 16px; font-size: 0.95rem; }
            .article-footer { flex-direction: column; align-items: flex-start; }
            .related-grid { grid-template-columns: 1fr; }
            .cta-section { padding: 40px 0; }
            .cta-section h2 { font-size: 1.3rem; }
            .cta-btn { padding: 12px 28px; font-size: 0.95rem; }
            .not-found-wrap { padding: 50px 14px 60px; }
            .not-found-wrap h1 { font-size: 1.4rem; }
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #dc2626;
            --primary-dark: #b91c1c;
            --primary-light: #ef4444;
            --primary-bg: #fef2f2;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-dark-2: #1e293b;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-light: #94a3b8;
            --text-white: #ffffff;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12), 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.16);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
            --container: 1240px;
            --nav-height: 72px;
        }

        /* ========== Reset & Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--nav-height);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            transition: var(--transition);
        }
        button:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 6px;
        }
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            background: var(--bg-white);
            color: var(--text-primary);
            transition: var(--transition);
            width: 100%;
        }
        input:focus,
        textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.1);
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-primary);
        }
        h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
        }
        h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.5rem);
        }
        h4 {
            font-size: 1.125rem;
        }
        p {
            color: var(--text-secondary);
            margin-bottom: 0.5em;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== Header & Nav ========== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
            transition: var(--transition);
        }
        .header.scrolled {
            box-shadow: var(--shadow-md);
            border-bottom-color: transparent;
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .logo:hover {
            color: var(--text-primary);
        }
        .logo .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
        }
        .logo span:not(.logo-icon) {
            color: var(--primary);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            text-decoration: none;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav a:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .nav a.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--primary);
            border-radius: var(--radius-full);
        }
        .nav a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important;
            padding: 10px 24px;
            border-radius: var(--radius-full);
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(220, 38, 38, 0.3);
            margin-left: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(220, 38, 38, 0.4);
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
        }
        .nav a.nav-cta:active {
            transform: translateY(0);
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--text-primary);
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1px solid var(--border);
            cursor: pointer;
        }
        .nav-toggle:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }

        /* ========== 移动端导航 ========== */
        @media (max-width: 820px) {
            .nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav a {
                width: 100%;
                padding: 14px 18px;
                font-size: 1.05rem;
                text-align: center;
                border-radius: var(--radius-sm);
            }
            .nav a.active::after {
                display: none;
            }
            .nav a.nav-cta {
                margin-left: 0;
                margin-top: 8px;
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
            }
        }

        /* ========== Hero / Banner ========== */
        .page-hero {
            padding: 80px 0 100px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-2) 100%);
            position: relative;
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-body), transparent);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            color: var(--text-white);
            font-weight: 800;
            letter-spacing: -1px;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .page-hero h1 span {
            color: var(--accent);
        }
        .page-hero p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.15rem;
            max-width: 720px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #fff;
            padding: 8px 20px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            margin-bottom: 24px;
        }
        .page-hero .hero-badge i {
            color: var(--accent);
        }
        .page-hero .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .page-hero .hero-stat {
            text-align: center;
            color: #fff;
        }
        .page-hero .hero-stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }
        .page-hero .hero-stat .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* ========== 通用板块 ========== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: var(--text-white);
        }
        .section-dark p {
            color: rgba(255, 255, 255, 0.8);
        }
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-header h2 {
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: var(--radius-full);
            margin: 16px auto 0;
        }
        .section-header p {
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto;
            color: var(--text-muted);
        }
        .section-header.light p {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-header.light h2::after {
            background: linear-gradient(90deg, var(--accent), #fff);
        }

        /* ========== 卡片网格 ========== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .card .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
            transition: var(--transition);
        }
        .card:hover .card-img {
            transform: scale(1.03);
        }
        .card .card-body {
            padding: 24px 24px 28px;
        }
        .card .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-full);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .card .card-tag i {
            font-size: 0.7rem;
        }
        .card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card h3 a {
            color: var(--text-primary);
        }
        .card h3 a:hover {
            color: var(--primary);
        }
        .card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 16px;
            font-size: 0.85rem;
            color: var(--text-light);
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
        }
        .card .card-meta i {
            margin-right: 4px;
        }
        .card .card-meta span {
            display: flex;
            align-items: center;
        }

        /* ========== 内容卡片（横向） ========== */
        .feature-card {
            display: flex;
            gap: 28px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            align-items: flex-start;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
            transform: translateY(-4px);
        }
        .feature-card .fc-icon {
            flex-shrink: 0;
            width: 60px;
            height: 60px;
            background: var(--primary-bg);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
        }
        .feature-card .fc-body h4 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .feature-card .fc-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== 分析维度板块 ========== */
        .dimension-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .dimension-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .dimension-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .dimension-card .dc-icon {
            width: 72px;
            height: 72px;
            margin: 0 auto 20px;
            background: linear-gradient(135deg, var(--primary-bg), #fff);
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(220, 38, 38, 0.1);
            transition: var(--transition);
        }
        .dimension-card:hover .dc-icon {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 8px 24px rgba(220, 38, 38, 0.3);
            transform: scale(1.05);
        }
        .dimension-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .dimension-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== 数据统计 ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .stat-item {
            text-align: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 32px 20px;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-4px);
        }
        .stat-item .num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1.1;
        }
        .stat-item .num sup {
            font-size: 1rem;
            font-weight: 600;
            opacity: 0.7;
        }
        .stat-item .label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 8px;
        }
        .stat-item .sub {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
            margin-top: 4px;
        }

        /* ========== FAQ ========== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item .faq-q {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            color: var(--text-primary);
            background: transparent;
            width: 100%;
            text-align: left;
            border: none;
            user-select: none;
        }
        .faq-item .faq-q i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-a {
            display: block;
        }
        .faq-item .faq-a p {
            margin-bottom: 0;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-2) 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: var(--text-white);
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            text-decoration: none;
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 16px rgba(220, 38, 38, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(220, 38, 38, 0.4);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }
        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            transform: translateY(-3px);
        }
        .btn-outline-light:active {
            transform: translateY(0);
        }

        /* ========== 面包屑 ========== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-light);
            padding: 16px 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text-secondary);
        }
        .breadcrumb i {
            font-size: 0.7rem;
            color: var(--text-light);
        }

        /* ========== 标签列表 ========== */
        .tag-list {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: 24px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            background: var(--bg-white);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            text-decoration: none;
        }
        .tag:hover {
            background: var(--primary-bg);
            border-color: var(--primary-light);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .tag i {
            font-size: 0.8rem;
            color: var(--primary);
        }

        /* ========== Footer ========== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer .logo span:not(.logo-icon) {
            color: var(--primary-light);
        }
        .footer .logo .logo-icon {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        }
        .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 380px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-heading {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }
        .footer-heading::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            background: var(--primary);
            border-radius: var(--radius-full);
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links a:hover {
            color: var(--primary-light);
            transform: translateX(4px);
        }
        .footer-links a i {
            width: 18px;
            text-align: center;
            font-size: 0.85rem;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .dimension-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }
        @media (max-width: 820px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .page-hero {
                padding: 60px 0 80px;
                min-height: 300px;
            }
            .page-hero .hero-stats {
                gap: 24px;
            }
            .section {
                padding: 60px 0;
            }
            .feature-card {
                flex-direction: column;
                padding: 20px;
            }
            .feature-card .fc-icon {
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
            }
        }
        @media (max-width: 640px) {
            body {
                padding-top: 64px;
            }
            :root {
                --nav-height: 64px;
            }
            .grid-3,
            .grid-2,
            .dimension-grid,
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .page-hero {
                padding: 48px 0 64px;
                min-height: 260px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .page-hero .hero-stats {
                gap: 16px;
                flex-direction: column;
                align-items: center;
            }
            .section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .card .card-body {
                padding: 18px 18px 22px;
            }
            .dimension-card {
                padding: 24px 18px;
            }
            .stat-item {
                padding: 24px 16px;
            }
            .stat-item .num {
                font-size: 2rem;
            }
            .cta-section {
                padding: 60px 0;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.95rem;
                width: 100%;
                justify-content: center;
            }
            .cta-section .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .faq-item .faq-q {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-item .faq-a {
                padding: 0 18px 16px;
            }
            .breadcrumb {
                font-size: 0.8rem;
                padding: 12px 0;
            }
            .tag-list {
                gap: 8px;
            }
            .tag {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 420px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero p {
                font-size: 0.9rem;
            }
            .nav a {
                font-size: 0.9rem;
                padding: 12px 12px;
            }
            .logo {
                font-size: 1.2rem;
            }
            .logo .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
        }

        /* ========== 辅助类 ========== */
        .text-center {
            text-align: center;
        }
        .mt-12 {
            margin-top: 12px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-12 {
            margin-bottom: 12px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hidden {
            display: none !important;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }