/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a1a3e;
            --primary-light: #2d2a5e;
            --primary-dark: #0b0d1a;
            --accent: #f0a500;
            --accent-hover: #ffbe2e;
            --accent-2: #ff6b35;
            --accent-2-hover: #ff8555;
            --bg-dark: #0b0d1a;
            --bg-section: #0f1123;
            --bg-card: rgba(255, 255, 255, 0.04);
            --bg-card-hover: rgba(255, 255, 255, 0.08);
            --text-white: #ffffff;
            --text-light: #e0e0e0;
            --text-muted: #9a9ab0;
            --text-accent: #f0a500;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-accent: rgba(240, 165, 0, 0.3);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 30px rgba(240, 165, 0, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container: 1200px;
            --header-h: 70px;
            --topbar-h: 40px;
        }

        /* ===== reset / base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--text-accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-white);
            line-height: 1.3;
            font-weight: 700;
        }

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

        /* ===== 通用组件 ===== */
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 12px;
            background: rgba(240, 165, 0, 0.1);
            padding: 4px 16px;
            border-radius: 100px;
            border: 1px solid var(--border-accent);
        }
        .section-label i {
            font-size: 12px;
        }
        .section-title {
            font-size: 36px;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 40%, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 26px;
            }
        }
        .section-desc {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 700px;
            margin-bottom: 40px;
            line-height: 1.8;
        }
        .section-desc.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .text-center {
            text-align: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            line-height: 1.2;
            text-decoration: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            color: #fff;
            box-shadow: 0 4px 20px rgba(240, 165, 0, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(240, 165, 0, 0.45);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }
        .btn .fa-arrow-right {
            font-size: 13px;
            transition: var(--transition);
        }
        .btn:hover .fa-arrow-right {
            transform: translateX(4px);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(240, 165, 0, 0.12);
            color: var(--accent);
            border: 1px solid var(--border-accent);
        }
        .badge-hot {
            background: rgba(255, 107, 53, 0.15);
            color: var(--accent-2);
            border-color: rgba(255, 107, 53, 0.25);
        }
        .badge-new {
            background: rgba(0, 200, 150, 0.12);
            color: #00c896;
            border-color: rgba(0, 200, 150, 0.2);
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 28px 24px;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }
        .card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(255, 255, 255, 0.12);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .card-img {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 18px;
        }
        .card-img img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }
        .card:hover .card-img img {
            transform: scale(1.04);
        }
        .card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        .card p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
        }

        /* ===== 顶部信息条 ===== */
        .top-bar {
            background: rgba(11, 13, 26, 0.95);
            border-bottom: 1px solid var(--border-color);
            height: var(--topbar-h);
            display: flex;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted);
            position: relative;
            z-index: 1001;
        }
        .top-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .top-bar .top-left {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .top-bar .top-left span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .top-bar .top-left i {
            color: var(--accent);
            font-size: 12px;
        }
        .top-bar .top-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .top-bar .top-right a {
            color: var(--text-muted);
            font-size: 13px;
        }
        .top-bar .top-right a:hover {
            color: var(--accent);
        }
        .top-bar .status-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #00c896;
            margin-right: 6px;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.6;
                transform: scale(0.9);
            }
        }
        @media (max-width: 768px) {
            .top-bar .top-left span.hide-mobile {
                display: none;
            }
            .top-bar {
                font-size: 12px;
            }
        }

        /* ===== 主导航 ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 13, 26, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-h);
            display: flex;
            align-items: center;
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .header .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-white);
            text-decoration: none;
            letter-spacing: 0.5px;
        }
        .header .logo i {
            color: var(--accent);
            font-size: 26px;
        }
        .header .logo span {
            background: linear-gradient(135deg, #fff 30%, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .header .logo:hover {
            color: var(--text-white);
        }

        .header .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .header .nav-list a {
            padding: 8px 18px;
            border-radius: 100px;
            color: var(--text-light);
            font-size: 15px;
            font-weight: 500;
            text-decoration: none;
            transition: var(--transition);
            position: relative;
        }
        .header .nav-list a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.05);
        }
        .header .nav-list a.active {
            color: var(--text-white);
            background: rgba(240, 165, 0, 0.12);
            border: 1px solid var(--border-accent);
        }
        .header .nav-cta {
            margin-left: 12px;
        }
        .header .nav-cta .btn {
            padding: 8px 22px;
            font-size: 14px;
        }

        /* 移动端汉堡 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            background: none;
            border: none;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-white);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 900px) {
            .hamburger {
                display: flex;
            }
            .header .nav-list {
                position: fixed;
                top: calc(var(--header-h) + var(--topbar-h));
                left: 0;
                right: 0;
                background: rgba(11, 13, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px 20px 32px;
                gap: 8px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                box-shadow: var(--shadow-card);
            }
            .header .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .header .nav-list a {
                width: 100%;
                text-align: center;
                padding: 12px 18px;
                font-size: 16px;
            }
            .header .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                width: 100%;
            }
            .header .nav-cta .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.5;
            z-index: 0;
            animation: hero-zoom 20s ease-in-out infinite alternate;
        }
        @keyframes hero-zoom {
            0% {
                transform: scale(1);
            }
            100% {
                transform: scale(1.06);
            }
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 13, 26, 0.88) 30%, rgba(11, 13, 26, 0.4) 70%, rgba(11, 13, 26, 0.2));
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            padding-top: 60px;
            padding-bottom: 80px;
            width: 100%;
        }
        .hero-content {
            max-width: 780px;
        }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 165, 0, 0.12);
            border: 1px solid var(--border-accent);
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 14px;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-content .hero-badge i {
            font-size: 12px;
        }
        .hero-content h1 {
            font-size: 52px;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 20%, var(--accent) 70%, var(--accent-2));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content .hero-desc {
            font-size: 19px;
            color: var(--text-muted);
            max-width: 600px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero-content .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            margin-bottom: 40px;
        }
        .hero-content .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px 48px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .hero-content .hero-stats .stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero-content .hero-stats .stat-number {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 1px;
        }
        .hero-content .hero-stats .stat-number i {
            color: var(--accent);
            font-size: 20px;
            margin-right: 6px;
        }
        .hero-content .hero-stats .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* hero 倒计时模块 */
        .hero-countdown {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 12px 24px;
            margin-bottom: 28px;
            backdrop-filter: blur(6px);
        }
        .hero-countdown .cd-label {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-countdown .cd-label i {
            color: var(--accent-2);
        }
        .hero-countdown .cd-timer {
            display: flex;
            gap: 6px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            font-variant-numeric: tabular-nums;
        }
        .hero-countdown .cd-timer .cd-unit {
            background: rgba(255, 255, 255, 0.06);
            padding: 2px 10px;
            border-radius: 6px;
            min-width: 36px;
            text-align: center;
        }
        .hero-countdown .cd-timer .cd-sep {
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 80vh;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .hero-content .hero-desc {
                font-size: 16px;
            }
            .hero-content .hero-stats {
                gap: 20px 30px;
            }
            .hero-content .hero-stats .stat-number {
                font-size: 22px;
            }
            .hero-countdown {
                flex-wrap: wrap;
                padding: 10px 16px;
            }
            .hero-countdown .cd-timer {
                font-size: 17px;
            }
        }
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-content .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-content .hero-actions .btn {
                justify-content: center;
            }
        }

        /* ===== 通用板块间距 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section);
        }
        @media (max-width: 768px) {
            .section {
                padding: 50px 0;
            }
        }

        /* ===== 平台简介 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .intro-grid .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .intro-grid .intro-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: var(--transition);
        }
        .intro-grid .intro-image:hover img {
            transform: scale(1.03);
        }
        .intro-grid .intro-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 13, 26, 0.4), transparent);
        }
        .intro-grid .intro-text h2 {
            font-size: 32px;
            margin-bottom: 18px;
        }
        .intro-grid .intro-text p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 14px;
        }
        .intro-grid .intro-text .intro-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }
        .intro-grid .intro-text .intro-tags .badge {
            font-size: 13px;
            padding: 6px 18px;
        }

        @media (max-width: 900px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .intro-grid .intro-image img {
                height: 260px;
            }
            .intro-grid .intro-text h2 {
                font-size: 26px;
            }
        }

        /* ===== 核心优势 ===== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .advantage-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 32px 26px;
            text-align: center;
            transition: var(--transition);
        }
        .advantage-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 255, 255, 0.12);
        }
        .advantage-card .adv-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            border-radius: 50%;
            background: rgba(240, 165, 0, 0.1);
            border: 1px solid var(--border-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--accent);
            transition: var(--transition);
        }
        .advantage-card:hover .adv-icon {
            background: rgba(240, 165, 0, 0.18);
            transform: scale(1.06);
        }
        .advantage-card h3 {
            font-size: 19px;
            margin-bottom: 10px;
        }
        .advantage-card p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
        }

        @media (max-width: 900px) {
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .advantages-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            background: var(--bg-card);
            transition: var(--transition);
            cursor: pointer;
            min-height: 240px;
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 255, 255, 0.12);
        }
        .category-card .cat-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover .cat-img {
            transform: scale(1.05);
        }
        .category-card .cat-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card .cat-body h3 {
            font-size: 18px;
            margin-bottom: 6px;
        }
        .category-card .cat-body p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.6;
            flex: 1;
        }
        .category-card .cat-body .cat-link {
            margin-top: 12px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .category-card .cat-body .cat-link i {
            font-size: 12px;
            transition: var(--transition);
        }
        .category-card:hover .cat-body .cat-link i {
            transform: translateX(4px);
        }
        .category-card .cat-badge {
            position: absolute;
            top: 14px;
            right: 14px;
            z-index: 2;
        }

        @media (max-width: 900px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .category-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 最新资讯 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 20px;
            transition: var(--transition);
        }
        .news-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(255, 255, 255, 0.12);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .news-card .news-thumb {
            width: 140px;
            min-height: 100px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }
        .news-card .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-card:hover .news-thumb img {
            transform: scale(1.06);
        }
        .news-card .news-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .news-card .news-info .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .news-card .news-info .news-meta .badge {
            font-size: 11px;
            padding: 2px 10px;
        }
        .news-card .news-info h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            line-height: 1.4;
            transition: var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card:hover .news-info h4 {
            color: var(--accent);
        }
        .news-card .news-info .news-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-info .news-date {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-top: auto;
        }
        .news-card .news-info .news-date i {
            font-size: 12px;
        }

        @media (max-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
            .news-card {
                flex-direction: column;
            }
            .news-card .news-thumb {
                width: 100%;
                height: 180px;
            }
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }
        .news-empty i {
            font-size: 36px;
            color: var(--text-muted);
            margin-bottom: 12px;
            opacity: 0.5;
        }

        /* ===== 数据统计 ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-block {
            text-align: center;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 32px 20px;
            transition: var(--transition);
        }
        .stat-block:hover {
            background: var(--bg-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-block .stat-icon {
            font-size: 32px;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .stat-block .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            letter-spacing: 1px;
        }
        .stat-block .stat-number .plus {
            color: var(--accent);
        }
        .stat-block .stat-label {
            font-size: 15px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        @media (max-width: 900px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .stats-row {
                grid-template-columns: 1fr;
            }
            .stat-block .stat-number {
                font-size: 28px;
            }
        }

        /* ===== 使用流程 ===== */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .flow-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(to right, var(--accent), var(--accent-2), var(--accent));
            opacity: 0.25;
            z-index: 0;
        }
        .flow-step {
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--bg-dark);
            padding: 20px 16px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .flow-step:hover {
            border-color: var(--border-accent);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .flow-step .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 14px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 16px rgba(240, 165, 0, 0.25);
        }
        .flow-step h4 {
            font-size: 16px;
            margin-bottom: 6px;
        }
        .flow-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 900px) {
            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-steps::before {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .flow-steps {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.1);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            gap: 16px;
            user-select: none;
            transition: var(--transition);
        }
        .faq-item .faq-q:hover {
            color: var(--accent);
        }
        .faq-item .faq-q i {
            color: var(--accent);
            font-size: 14px;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.active .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        @media (max-width: 520px) {
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-item .faq-a {
                padding: 0 16px;
                font-size: 14px;
            }
            .faq-item.active .faq-a {
                padding: 0 16px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark) 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-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 70px 24px;
        }
        .cta-section h2 {
            font-size: 34px;
            margin-bottom: 14px;
        }
        .cta-section p {
            color: var(--text-muted);
            font-size: 17px;
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .cta-section .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        @media (max-width: 768px) {
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section .container {
                padding: 50px 16px;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary-dark);
            border-top: 1px solid var(--border-color);
            padding: 50px 0 30px;
        }
        .footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 30px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 24px;
        }
        .footer .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        .footer .footer-brand .logo i {
            color: var(--accent);
        }
        .footer .footer-brand .logo span {
            background: linear-gradient(135deg, #fff 30%, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            max-width: 300px;
        }
        .footer .footer-col h4 {
            font-size: 15px;
            color: var(--text-white);
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 14px;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer .footer-bottom a {
            color: var(--text-muted);
        }
        .footer .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer .footer-bottom .social-links {
            display: flex;
            gap: 12px;
        }
        .footer .footer-bottom .social-links a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 15px;
            transition: var(--transition);
        }
        .footer .footer-bottom .social-links a:hover {
            background: rgba(240, 165, 0, 0.12);
            border-color: var(--border-accent);
            color: var(--accent);
            transform: translateY(-2px);
        }

        @media (max-width: 900px) {
            .footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 520px) {
            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 分割线 ===== */
        .divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(to right, var(--accent), var(--accent-2));
            border-radius: 4px;
            margin: 0 auto 16px;
        }
        .divider.left {
            margin: 0 0 16px 0;
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.12);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        /* ===== 焦点轮廓 ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== 动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-in {
            animation: fadeInUp 0.7s ease forwards;
        }
        .animate-in-d1 {
            animation-delay: 0.1s;
        }
        .animate-in-d2 {
            animation-delay: 0.2s;
        }
        .animate-in-d3 {
            animation-delay: 0.3s;
        }
        .animate-in-d4 {
            animation-delay: 0.4s;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a4a;
            --secondary: #e8b830;
            --secondary-light: #f0d060;
            --accent: #ff6b35;
            --bg: #f8f9fc;
            --bg-alt: #eef1f8;
            --bg-dark: #0f1a2e;
            --text: #1a1a2e;
            --text-light: #4a4a6a;
            --text-muted: #7a7a9a;
            --border: #d0d5e0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 32px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 42, 108, 0.16);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container: 1200px;
            --header-top-bg: #0f1a2e;
            --nav-bg: #ffffff;
            --footer-bg: #0f1a2e;
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== 顶部信息条 ===== */
        .header-top {
            background: var(--header-top-bg);
            color: rgba(255, 255, 255, 0.8);
            font-size: 13px;
            padding: 6px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .header-top .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px 16px;
        }
        .header-top .top-left {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-top .top-left span {
            opacity: 0.8;
        }
        .header-top .top-left .domain-tag {
            background: rgba(232, 184, 48, 0.18);
            color: var(--secondary);
            padding: 2px 12px;
            border-radius: 20px;
            font-weight: 500;
            font-size: 12px;
        }
        .header-top .top-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-top .top-right a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
            transition: var(--transition);
        }
        .header-top .top-right a:hover {
            color: var(--secondary);
        }
        .header-top .top-right .hot-link {
            background: rgba(255, 107, 53, 0.2);
            color: var(--accent);
            padding: 2px 14px;
            border-radius: 20px;
            font-weight: 500;
            font-size: 12px;
            animation: pulse-glow 2s ease-in-out infinite;
        }
        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 107, 53, 0.2);
            }
            50% {
                box-shadow: 0 0 12px 4px rgba(255, 107, 53, 0.25);
            }
        }

        /* ===== 主导航 ===== */
        .main-header {
            background: var(--nav-bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }
        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }
        .logo i {
            color: var(--secondary);
            font-size: 26px;
            filter: drop-shadow(0 2px 8px rgba(232, 184, 48, 0.3));
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }
        .nav-list a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 42, 108, 0.25);
        }
        .nav-list a.active::after {
            display: none;
        }
        .nav-list .nav-cta {
            margin-left: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 26px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: 0 4px 16px rgba(26, 42, 108, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 42, 108, 0.35);
            color: #fff;
        }
        .btn-secondary {
            background: var(--secondary);
            color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(232, 184, 48, 0.30);
        }
        .btn-secondary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 184, 48, 0.40);
            color: var(--primary-dark);
        }
        .btn-sm {
            padding: 7px 20px;
            font-size: 14px;
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 17px;
        }

        /* ===== 移动端菜单按钮 ===== */
        .menu-toggle {
            display: none;
            background: none;
            font-size: 26px;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: var(--bg-alt);
        }

        /* ===== 页面横幅 ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 72px;
            background: var(--bg-dark);
            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/cover no-repeat;
            opacity: 0.18;
            filter: blur(2px);
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.92) 40%, rgba(26, 42, 108, 0.70) 100%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .page-banner .breadcrumb a:hover {
            color: var(--secondary);
        }
        .page-banner .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.3);
        }
        .page-banner .breadcrumb .current {
            color: var(--secondary);
        }
        .page-banner h1 {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .page-banner h1 i {
            color: var(--secondary);
            margin-right: 10px;
        }
        .page-banner p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 680px;
            margin: 0 auto 20px;
        }
        .page-banner .banner-tags {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .banner-tags .tag {
            background: rgba(255, 255, 255, 0.10);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: rgba(255, 255, 255, 0.85);
            padding: 5px 18px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 500;
        }
        .banner-tags .tag i {
            margin-right: 6px;
            color: var(--secondary);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-white {
            background: #fff;
        }
        .section-dark {
            background: var(--bg-dark);
            color: #fff;
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }
        .section-header .subtitle {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            background: rgba(232, 184, 48, 0.12);
            padding: 4px 18px;
            border-radius: 30px;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .section-header h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--text);
        }
        .section-dark .section-header h2 {
            color: #fff;
        }
        .section-header p {
            font-size: 17px;
            color: var(--text-muted);
        }
        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== 登录方式卡片 ===== */
        .methods-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 28px;
        }
        .method-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            text-align: center;
        }
        .method-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .method-card .icon-wrap {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 30px;
            color: #fff;
            box-shadow: 0 8px 24px rgba(26, 42, 108, 0.20);
        }
        .method-card .icon-wrap.gold {
            background: linear-gradient(135deg, var(--secondary), #d4a020);
        }
        .method-card .icon-wrap.green {
            background: linear-gradient(135deg, #1a8a5c, #0f6a44);
        }
        .method-card .icon-wrap.purple {
            background: linear-gradient(135deg, #6a4a9a, #4a2a7a);
        }
        .method-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        .method-card p {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .method-card .step-badge {
            display: inline-block;
            background: var(--bg-alt);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 30px;
        }

        /* ===== 详细步骤 ===== */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
            max-width: 800px;
            margin: 0 auto;
        }
        .step-item {
            display: flex;
            gap: 20px;
            background: #fff;
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            align-items: flex-start;
        }
        .step-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateX(4px);
        }
        .step-item .step-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(26, 42, 108, 0.20);
        }
        .step-item .step-num.gold {
            background: var(--secondary);
            color: var(--primary-dark);
        }
        .step-item .step-content {
            flex: 1;
        }
        .step-item .step-content h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }
        .step-item .step-content p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .step-item .step-content .tip {
            display: inline-block;
            margin-top: 8px;
            font-size: 13px;
            color: var(--accent);
            background: rgba(255, 107, 53, 0.08);
            padding: 2px 14px;
            border-radius: 20px;
            font-weight: 500;
        }

        /* ===== 常见问题 FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            background: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-item .faq-q:hover {
            background: var(--bg-alt);
        }
        .faq-item .faq-q i {
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.active .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== 提示与技巧 ===== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
        }
        .tip-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .tip-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--secondary);
        }
        .tip-card .tip-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(232, 184, 48, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--secondary);
        }
        .tip-card .tip-text h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text);
        }
        .tip-card .tip-text p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 资源卡片 ===== */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .resource-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .resource-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .resource-card .rc-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
            background: var(--bg-alt);
        }
        .resource-card .rc-body {
            padding: 20px 22px 24px;
        }
        .resource-card .rc-body h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
        .resource-card .rc-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .resource-card .rc-body .rc-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted);
        }
        .resource-card .rc-body .rc-meta .badge {
            background: var(--bg-alt);
            padding: 2px 14px;
            border-radius: 20px;
            font-weight: 500;
            color: var(--primary);
            font-size: 12px;
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            position: relative;
            overflow: hidden;
            padding: 72px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            filter: blur(2px);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-section .cta-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
        }
        .footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer .footer-brand .logo span {
            -webkit-text-fill-color: #fff;
            background: none;
        }
        .footer .footer-brand .logo i {
            color: var(--secondary);
        }
        .footer .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer .social-links {
            display: flex;
            gap: 14px;
        }
        .footer .social-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 18px;
            transition: var(--transition);
        }
        .footer .social-links a:hover {
            color: var(--secondary);
            transform: scale(1.1);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .page-banner h1 {
                font-size: 36px;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            .nav-list {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: #fff;
                flex-direction: column;
                padding: 80px 24px 30px;
                box-shadow: -8px 0 40px rgba(0, 0, 0, 0.12);
                transition: right 0.35s ease;
                gap: 6px;
                overflow-y: auto;
                z-index: 2000;
            }
            .nav-list.open {
                right: 0;
            }
            .nav-list a {
                padding: 12px 18px;
                font-size: 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-list .nav-cta {
                margin-left: 0;
                margin-top: 12px;
                width: 100%;
            }
            .nav-list .nav-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .mobile-overlay {
                display: none;
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.35);
                z-index: 1999;
            }
            .mobile-overlay.show {
                display: block;
            }

            .page-banner {
                padding: 56px 0 48px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 28px;
            }
            .page-banner p {
                font-size: 16px;
            }

            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }

            .methods-grid {
                grid-template-columns: 1fr 1fr;
            }
            .tips-grid {
                grid-template-columns: 1fr 1fr;
            }
            .resource-grid {
                grid-template-columns: 1fr 1fr;
            }

            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .header-top .top-left .domain-tag {
                display: none;
            }
            .header-top .top-right .hot-link {
                font-size: 11px;
                padding: 1px 10px;
            }
        }

        @media (max-width: 520px) {
            .methods-grid {
                grid-template-columns: 1fr;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .resource-grid {
                grid-template-columns: 1fr;
            }
            .page-banner h1 {
                font-size: 24px;
            }
            .page-banner .banner-tags .tag {
                font-size: 12px;
                padding: 3px 14px;
            }
            .step-item {
                flex-direction: column;
                gap: 12px;
                padding: 20px;
            }
            .step-item .step-num {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section .cta-btns .btn {
                width: 100%;
                justify-content: center;
            }
            .header-top .top-left span {
                font-size: 12px;
            }
            .header-top .top-right a {
                font-size: 12px;
            }
            .main-header .container {
                height: 58px;
            }
            .logo {
                font-size: 18px;
            }
            .logo i {
                font-size: 22px;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
    :root {
        --primary: #0b1a3a;
        --primary-light: #142a52;
        --primary-dark: #060f22;
        --accent: #f5a623;
        --accent-light: #ffd54f;
        --accent-dark: #d4891a;
        --bg: #f4f6fb;
        --bg-white: #ffffff;
        --bg-card: #ffffff;
        --text: #1a1a2e;
        --text-muted: #6c757d;
        --text-light: #9ca3af;
        --border: #e8ecf1;
        --border-light: #f0f2f6;
        --radius-sm: 8px;
        --radius: 12px;
        --radius-lg: 20px;
        --shadow: 0 4px 24px rgba(11, 26, 58, 0.08);
        --shadow-hover: 0 8px 40px rgba(11, 26, 58, 0.15);
        --shadow-lg: 0 12px 48px rgba(11, 26, 58, 0.12);
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', sans-serif;
        --max-width: 1200px;
        --header-top-h: 40px;
        --nav-h: 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);
        background: var(--bg);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: color var(--transition);
    }
    a:hover {
        color: var(--accent-dark);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
        border-radius: var(--radius);
    }
    button,
    input,
    textarea {
        font-family: inherit;
        font-size: inherit;
        border: none;
        outline: 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(--primary);
    }
    h1 {
        font-size: 2.4rem;
    }
    h2 {
        font-size: 2rem;
    }
    h3 {
        font-size: 1.4rem;
    }
    h4 {
        font-size: 1.15rem;
    }
    p {
        margin-bottom: 1em;
    }

    /* ===== Container ===== */
    .container {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }
    @media (max-width: 768px) {
        .container {
            padding: 0 16px;
        }
        h1 {
            font-size: 1.8rem;
        }
        h2 {
            font-size: 1.5rem;
        }
        h3 {
            font-size: 1.2rem;
        }
    }

    /* ===== Buttons ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 28px;
        border-radius: var(--radius);
        font-weight: 600;
        font-size: 0.95rem;
        transition: all var(--transition);
        border: 2px solid transparent;
        white-space: nowrap;
    }
    .btn i {
        font-size: 0.9em;
        transition: transform var(--transition);
    }
    .btn:hover i {
        transform: translateX(4px);
    }
    .btn-primary {
        background: var(--accent);
        color: var(--primary);
        border-color: var(--accent);
    }
    .btn-primary:hover {
        background: var(--accent-dark);
        border-color: var(--accent-dark);
        color: var(--primary);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(245, 166, 35, 0.35);
    }
    .btn-primary:active {
        transform: translateY(0);
        box-shadow: 0 4px 12px rgba(245, 166, 35, 0.25);
    }
    .btn-outline {
        background: transparent;
        color: var(--bg-white);
        border-color: var(--bg-white);
    }
    .btn-outline:hover {
        background: var(--bg-white);
        color: var(--primary);
        transform: translateY(-2px);
    }
    .btn-sm {
        padding: 8px 18px;
        font-size: 0.85rem;
        border-radius: var(--radius-sm);
    }
    .btn-lg {
        padding: 16px 36px;
        font-size: 1.05rem;
    }
    .btn:focus-visible {
        outline: 3px solid var(--accent-light);
        outline-offset: 2px;
    }

    /* ===== Badge / Tag ===== */
    .badge {
        display: inline-block;
        padding: 4px 14px;
        border-radius: 20px;
        font-size: 0.78rem;
        font-weight: 600;
        background: var(--accent);
        color: var(--primary);
        letter-spacing: 0.3px;
    }
    .tag {
        display: inline-block;
        padding: 4px 12px;
        border-radius: var(--radius-sm);
        font-size: 0.78rem;
        font-weight: 500;
        background: var(--border-light);
        color: var(--text-muted);
        transition: all var(--transition);
    }
    .tag:hover {
        background: var(--accent-light);
        color: var(--primary);
    }

    /* ===== Top Bar ===== */
    .top-bar {
        background: var(--primary);
        color: rgba(255, 255, 255, 0.85);
        font-size: 0.82rem;
        height: var(--header-top-h);
        display: flex;
        align-items: center;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .top-bar .container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
    }
    .top-bar .top-left span {
        opacity: 0.75;
    }
    .top-bar .top-left i {
        margin-right: 6px;
        color: var(--accent);
    }
    .top-bar .top-right {
        display: flex;
        align-items: center;
        gap: 16px;
    }
    .top-bar .top-right a {
        color: rgba(255, 255, 255, 0.8);
        transition: color var(--transition);
    }
    .top-bar .top-right a:hover {
        color: var(--accent);
    }
    .top-bar .top-right .divider {
        width: 1px;
        height: 14px;
        background: rgba(255, 255, 255, 0.15);
    }
    @media (max-width: 640px) {
        .top-bar .top-left span {
            display: none;
        }
        .top-bar .top-right .divider {
            display: none;
        }
        .top-bar .top-right a {
            font-size: 0.75rem;
        }
    }

    /* ===== Header / Nav ===== */
    .header {
        background: var(--bg-white);
        border-bottom: 1px solid var(--border);
        position: sticky;
        top: 0;
        z-index: 1000;
        height: var(--nav-h);
        display: flex;
        align-items: center;
        box-shadow: 0 2px 12px rgba(11, 26, 58, 0.04);
    }
    .header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.35rem;
        font-weight: 800;
        color: var(--primary);
    }
    .logo i {
        font-size: 1.6rem;
        color: var(--accent);
    }
    .logo span {
        background: linear-gradient(135deg, var(--primary), var(--accent));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .nav-list {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .nav-list a {
        padding: 8px 16px;
        border-radius: var(--radius-sm);
        font-weight: 500;
        font-size: 0.92rem;
        color: var(--text);
        transition: all var(--transition);
        position: relative;
    }
    .nav-list a:hover {
        color: var(--accent-dark);
        background: rgba(245, 166, 35, 0.08);
    }
    .nav-list a.active {
        color: var(--accent-dark);
        background: rgba(245, 166, 35, 0.12);
        font-weight: 600;
    }
    .nav-list a.active::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 20px;
        height: 3px;
        background: var(--accent);
        border-radius: 2px;
    }
    .nav-list .nav-cta {
        margin-left: 12px;
    }
    .nav-list .nav-cta .btn {
        padding: 8px 20px;
        font-size: 0.88rem;
    }

    /* Hamburger */
    .hamburger {
        display: none;
        flex-direction: column;
        gap: 5px;
        padding: 8px;
        cursor: pointer;
        background: none;
        border: none;
    }
    .hamburger span {
        width: 26px;
        height: 2.5px;
        background: var(--primary);
        border-radius: 2px;
        transition: all var(--transition);
    }
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    @media (max-width: 900px) {
        .nav-list {
            position: fixed;
            top: calc(var(--header-top-h) + var(--nav-h));
            left: 0;
            right: 0;
            background: var(--bg-white);
            flex-direction: column;
            padding: 20px 24px 28px;
            gap: 6px;
            box-shadow: 0 12px 40px rgba(11, 26, 58, 0.15);
            border-bottom: 2px solid var(--border);
            transform: translateY(-120%);
            opacity: 0;
            pointer-events: none;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 999;
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }
        .nav-list.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .nav-list a {
            width: 100%;
            padding: 12px 16px;
            font-size: 1rem;
        }
        .nav-list .nav-cta {
            margin-left: 0;
            margin-top: 12px;
            width: 100%;
        }
        .nav-list .nav-cta .btn {
            width: 100%;
            justify-content: center;
            padding: 12px 20px;
        }
        .hamburger {
            display: flex;
        }
    }
    @media (max-width: 480px) {
        :root {
            --nav-h: 64px;
        }
        .logo {
            font-size: 1.15rem;
        }
        .logo i {
            font-size: 1.3rem;
        }
    }

    /* ===== Article Banner ===== */
    .article-banner {
        position: relative;
        padding: 80px 0 60px;
        background: var(--primary-dark);
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        background-blend-mode: overlay;
        color: var(--bg-white);
        overflow: hidden;
    }
    .article-banner::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(11, 26, 58, 0.88) 0%, rgba(11, 26, 58, 0.72) 100%);
        z-index: 1;
    }
    .article-banner .container {
        position: relative;
        z-index: 2;
    }
    .article-banner .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.85rem;
        color: rgba(255, 255, 255, 0.6);
        margin-bottom: 24px;
    }
    .article-banner .breadcrumb a {
        color: rgba(255, 255, 255, 0.7);
        transition: color var(--transition);
    }
    .article-banner .breadcrumb a:hover {
        color: var(--accent);
    }
    .article-banner .breadcrumb i {
        font-size: 0.65rem;
        color: rgba(255, 255, 255, 0.4);
    }
    .article-banner .banner-meta {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 16px 24px;
        margin-bottom: 16px;
    }
    .article-banner .banner-meta .badge {
        background: var(--accent);
        color: var(--primary);
    }
    .article-banner .banner-meta .date {
        font-size: 0.88rem;
        color: rgba(255, 255, 255, 0.7);
    }
    .article-banner .banner-meta .date i {
        margin-right: 6px;
        color: var(--accent);
    }
    .article-banner h1 {
        color: var(--bg-white);
        font-size: 2.6rem;
        max-width: 900px;
        line-height: 1.25;
        margin-bottom: 20px;
        text-shadow: 0 2px 16px rgba(0, 0, 0, 0.2);
    }
    .article-banner .banner-desc {
        font-size: 1.1rem;
        color: rgba(255, 255, 255, 0.85);
        max-width: 720px;
        line-height: 1.7;
    }
    @media (max-width: 768px) {
        .article-banner {
            padding: 56px 0 40px;
        }
        .article-banner h1 {
            font-size: 1.8rem;
        }
        .article-banner .banner-desc {
            font-size: 0.95rem;
        }
        .article-banner .breadcrumb {
            font-size: 0.78rem;
        }
    }
    @media (max-width: 480px) {
        .article-banner h1 {
            font-size: 1.5rem;
        }
    }

    /* ===== Article Content ===== */
    .article-section {
        padding: 60px 0;
    }
    .article-layout {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 48px;
    }
    .article-main {
        background: var(--bg-white);
        border-radius: var(--radius-lg);
        padding: 48px 48px 40px;
        box-shadow: var(--shadow);
    }
    .article-main .article-body {
        font-size: 1.05rem;
        line-height: 1.9;
        color: var(--text);
    }
    .article-main .article-body p {
        margin-bottom: 1.4em;
    }
    .article-main .article-body img {
        margin: 32px 0;
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        width: 100%;
    }
    .article-main .article-body h2,
    .article-main .article-body h3 {
        margin-top: 36px;
        margin-bottom: 16px;
    }
    .article-main .article-body ul,
    .article-main .article-body ol {
        margin: 16px 0 20px;
        padding-left: 24px;
    }
    .article-main .article-body ul li {
        list-style: disc;
        margin-bottom: 8px;
    }
    .article-main .article-body ol li {
        list-style: decimal;
        margin-bottom: 8px;
    }
    .article-main .article-body blockquote {
        border-left: 4px solid var(--accent);
        padding: 16px 24px;
        margin: 24px 0;
        background: var(--bg);
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--text-muted);
        font-style: italic;
    }
    .article-main .article-body a {
        color: var(--accent-dark);
        text-decoration: underline;
        text-underline-offset: 2px;
    }
    .article-main .article-body a:hover {
        color: var(--accent);
    }

    /* Article info bar */
    .article-info-bar {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        margin-top: 40px;
        padding-top: 24px;
        border-top: 1px solid var(--border);
    }
    .article-info-bar .tags {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    .article-info-bar .share {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 0.9rem;
        color: var(--text-muted);
    }
    .article-info-bar .share a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: var(--bg);
        color: var(--text-muted);
        transition: all var(--transition);
    }
    .article-info-bar .share a:hover {
        background: var(--accent);
        color: var(--primary);
        transform: translateY(-2px);
    }

    /* Sidebar */
    .article-sidebar {
        display: flex;
        flex-direction: column;
        gap: 32px;
    }
    .sidebar-card {
        background: var(--bg-white);
        border-radius: var(--radius);
        padding: 28px 24px;
        box-shadow: var(--shadow);
    }
    .sidebar-card h3 {
        font-size: 1.1rem;
        margin-bottom: 16px;
        padding-bottom: 12px;
        border-bottom: 2px solid var(--accent);
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .sidebar-card h3 i {
        color: var(--accent);
    }
    .sidebar-list li {
        padding: 10px 0;
        border-bottom: 1px solid var(--border-light);
    }
    .sidebar-list li:last-child {
        border-bottom: none;
    }
    .sidebar-list li a {
        display: flex;
        gap: 12px;
        align-items: flex-start;
        color: var(--text);
        transition: color var(--transition);
    }
    .sidebar-list li a:hover {
        color: var(--accent-dark);
    }
    .sidebar-list li a .thumb {
        width: 60px;
        height: 60px;
        border-radius: var(--radius-sm);
        object-fit: cover;
        flex-shrink: 0;
        background: var(--bg);
    }
    .sidebar-list li a .info {
        flex: 1;
    }
    .sidebar-list li a .info .title {
        font-weight: 600;
        font-size: 0.92rem;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        line-height: 1.4;
    }
    .sidebar-list li a .info .meta {
        font-size: 0.78rem;
        color: var(--text-muted);
        margin-top: 4px;
    }
    .sidebar-cta {
        background: linear-gradient(135deg, var(--primary), var(--primary-light));
        color: var(--bg-white);
        border-radius: var(--radius);
        padding: 32px 24px;
        text-align: center;
    }
    .sidebar-cta h4 {
        color: var(--bg-white);
        font-size: 1.2rem;
        margin-bottom: 8px;
    }
    .sidebar-cta p {
        color: rgba(255, 255, 255, 0.75);
        font-size: 0.9rem;
        margin-bottom: 20px;
    }
    .sidebar-cta .btn {
        width: 100%;
        justify-content: center;
    }

    @media (max-width: 1024px) {
        .article-layout {
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .article-sidebar {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
    }
    @media (max-width: 640px) {
        .article-main {
            padding: 24px 16px;
        }
        .article-main .article-body {
            font-size: 0.95rem;
        }
        .article-sidebar {
            grid-template-columns: 1fr;
        }
        .article-info-bar {
            flex-direction: column;
            align-items: flex-start;
        }
    }

    /* ===== Not Found ===== */
    .not-found-box {
        text-align: center;
        padding: 80px 24px;
    }
    .not-found-box i {
        font-size: 4rem;
        color: var(--text-light);
        margin-bottom: 24px;
    }
    .not-found-box h2 {
        font-size: 1.8rem;
        margin-bottom: 12px;
    }
    .not-found-box p {
        color: var(--text-muted);
        font-size: 1.05rem;
        margin-bottom: 24px;
    }
    .not-found-box .btn {
        display: inline-flex;
    }

    /* ===== FAQ Section ===== */
    .faq-section {
        padding: 64px 0;
        background: var(--bg-white);
    }
    .faq-section .section-title {
        text-align: center;
        margin-bottom: 48px;
    }
    .faq-section .section-title h2 {
        font-size: 2rem;
        margin-bottom: 12px;
    }
    .faq-section .section-title p {
        color: var(--text-muted);
        max-width: 560px;
        margin: 0 auto;
    }
    .faq-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
        max-width: 900px;
        margin: 0 auto;
    }
    .faq-item {
        background: var(--bg);
        border-radius: var(--radius);
        padding: 24px 28px;
        transition: all var(--transition);
        cursor: pointer;
        border: 1px solid transparent;
    }
    .faq-item:hover {
        border-color: var(--accent-light);
        box-shadow: var(--shadow);
    }
    .faq-item .faq-q {
        font-weight: 700;
        font-size: 1rem;
        color: var(--primary);
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
    }
    .faq-item .faq-q i {
        color: var(--accent);
        font-size: 0.85rem;
        transition: transform var(--transition);
    }
    .faq-item.open .faq-q i {
        transform: rotate(180deg);
    }
    .faq-item .faq-a {
        margin-top: 12px;
        font-size: 0.92rem;
        color: var(--text-muted);
        line-height: 1.7;
        display: none;
    }
    .faq-item.open .faq-a {
        display: block;
    }
    @media (max-width: 768px) {
        .faq-grid {
            grid-template-columns: 1fr;
        }
        .faq-section .section-title h2 {
            font-size: 1.5rem;
        }
    }

    /* ===== CTA Section ===== */
    .cta-section {
        padding: 72px 0;
        background: var(--primary);
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        background-blend-mode: overlay;
        position: relative;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(11, 26, 58, 0.9) 0%, rgba(11, 26, 58, 0.75) 100%);
    }
    .cta-section .container {
        position: relative;
        z-index: 2;
        text-align: center;
    }
    .cta-section h2 {
        color: var(--bg-white);
        font-size: 2.2rem;
        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 .btn {
        font-size: 1.05rem;
        padding: 16px 40px;
    }
    @media (max-width: 768px) {
        .cta-section {
            padding: 48px 0;
        }
        .cta-section h2 {
            font-size: 1.6rem;
        }
        .cta-section p {
            font-size: 0.95rem;
        }
    }

    /* ===== Footer ===== */
    .footer {
        background: var(--primary-dark);
        color: rgba(255, 255, 255, 0.8);
        padding: 56px 0 0;
    }
    .footer .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer .footer-brand .logo {
        color: var(--bg-white);
        margin-bottom: 16px;
    }
    .footer .footer-brand .logo i {
        color: var(--accent);
    }
    .footer .footer-brand .logo span {
        background: none;
        -webkit-text-fill-color: var(--bg-white);
        color: var(--bg-white);
    }
    .footer .footer-brand p {
        font-size: 0.9rem;
        opacity: 0.75;
        max-width: 360px;
        line-height: 1.7;
    }
    .footer .footer-col h4 {
        color: var(--bg-white);
        font-size: 1rem;
        margin-bottom: 16px;
        font-weight: 600;
    }
    .footer .footer-col a {
        display: block;
        color: rgba(255, 255, 255, 0.65);
        font-size: 0.9rem;
        padding: 6px 0;
        transition: color var(--transition);
    }
    .footer .footer-col a:hover {
        color: var(--accent);
    }
    .footer .footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 0;
        font-size: 0.85rem;
        opacity: 0.65;
        flex-wrap: wrap;
        gap: 12px;
    }
    .footer .footer-bottom .social-links {
        display: flex;
        gap: 12px;
    }
    .footer .footer-bottom .social-links a {
        color: rgba(255, 255, 255, 0.6);
        font-size: 1.15rem;
        transition: color var(--transition);
    }
    .footer .footer-bottom .social-links a:hover {
        color: var(--accent);
    }
    @media (max-width: 900px) {
        .footer .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
    }
    @media (max-width: 520px) {
        .footer .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .footer .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
    }

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