/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --bg: #0E1412;
            --surface: #161E1A;
            --surface-2: #1E2924;
            --border: #29352F;
            --primary: #0DBF77;
            --primary-light: #4DE3A8;
            --primary-dark: #087F51;
            --accent: #E9C46A;
            --accent-light: #F6DD9B;
            --text-main: #F2F7F4;
            --text-sub: #9AABA3;
            --text-mute: #5F7269;
            --danger: #E8785A;
            --fs-hero: clamp(2rem, 4vw, 3rem);
            --fs-h2: clamp(1.3rem, 2.4vw, 1.7rem);
            --fs-h3: 1.05rem;
            --fs-body: 1rem;
            --fs-sm: 0.85rem;
            --fs-xs: 0.75rem;
            --radius-lg: 22px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 14px 44px rgba(0, 0, 0, 0.35);
            --shadow-btn: 0 8px 24px rgba(13, 191, 119, 0.25);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-w: 270px;
            --sidebar-w-collapse: 96px;
            --mobile-header-h: 60px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--bg);
            color: var(--text-main);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
            font-size: var(--fs-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
            overflow-x: hidden;
            font-variant-numeric: tabular-nums;
        }

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

        a:hover {
            color: var(--primary);
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.35;
            text-wrap: balance;
        }

        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 通用按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            background: linear-gradient(135deg, #0DBF77, #4DE3A8);
            color: #0B1F16;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: 12px;
            box-shadow: var(--shadow-btn);
            transition: var(--transition);
            cursor: pointer;
            border: none;
            gap: 8px;
        }

        .btn-primary:hover {
            filter: brightness(1.08);
            box-shadow: 0 12px 32px rgba(13, 191, 119, 0.35);
            color: #0B1F16;
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 4px 16px rgba(13, 191, 119, 0.2);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(77, 227, 168, 0.5);
            outline-offset: 2px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-main);
            font-size: 0.95rem;
            font-weight: 500;
            border-radius: 12px;
            transition: var(--transition);
            cursor: pointer;
            gap: 8px;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            background: rgba(13, 191, 119, 0.08);
            transform: translateY(-1px);
        }

        .btn-outline:active {
            transform: translateY(1px);
        }

        .btn-outline:focus-visible {
            outline: 3px solid rgba(13, 191, 119, 0.3);
            outline-offset: 2px;
        }

        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            background: linear-gradient(135deg, #E9C46A, #F6DD9B);
            color: #0B1F16;
            font-size: 0.95rem;
            font-weight: 700;
            border-radius: 12px;
            box-shadow: 0 8px 24px rgba(233, 196, 106, 0.25);
            transition: var(--transition);
            cursor: pointer;
            border: none;
            gap: 8px;
        }

        .btn-gold:hover {
            filter: brightness(1.06);
            box-shadow: 0 12px 32px rgba(233, 196, 106, 0.34);
            color: #0B1F16;
            transform: translateY(-1px);
        }

        .btn-gold:active {
            transform: translateY(1px);
        }

        .btn-gold:focus-visible {
            outline: 3px solid rgba(233, 196, 106, 0.4);
            outline-offset: 2px;
        }

        /* ===== 左侧垂直导航 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: var(--surface);
            border-right: 1px solid var(--border);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            padding: 28px 20px 24px;
            transition: width 0.35s ease;
        }

        .sidebar-brand {
            margin-bottom: 40px;
            padding: 0 8px;
        }

        .brand-link {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .brand-link:hover {
            color: var(--text-main);
        }

        .brand-logo {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 800;
            color: #0B1F16;
            flex-shrink: 0;
            box-shadow: 0 4px 16px rgba(13, 191, 119, 0.3);
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            gap: 2px;
            min-width: 0;
        }

        .brand-name {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .brand-tagline {
            font-size: 0.72rem;
            color: var(--text-mute);
            white-space: nowrap;
        }

        .sidebar-nav {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 14px;
            height: 48px;
            padding: 0 14px;
            border-radius: 12px;
            color: var(--text-sub);
            font-size: 0.93rem;
            font-weight: 500;
            position: relative;
            transition: var(--transition);
            border-left: 4px solid transparent;
        }

        .nav-link:hover {
            color: var(--primary-light);
            background: rgba(13, 191, 119, 0.06);
            border-left-color: rgba(13, 191, 119, 0.5);
        }

        .nav-link.active {
            color: var(--primary-light);
            background: rgba(13, 191, 119, 0.1);
            border-left-color: var(--primary);
        }

        .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .sidebar-footer {
            padding-top: 16px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            gap: 12px;
            align-items: center;
        }

        .btn-consult {
            width: 100%;
            height: 44px;
            border-radius: 12px;
            border: 1px solid var(--border);
            background: transparent;
            color: var(--text-main);
            font-size: 0.9rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-consult:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            background: rgba(13, 191, 119, 0.08);
        }

        .sidebar-warn {
            font-size: 0.72rem;
            color: var(--text-mute);
            text-align: center;
        }

        /* 折叠模式 */
        @media (max-width: 1199.98px) {
            .sidebar {
                width: var(--sidebar-w-collapse);
                padding: 24px 12px;
            }

            .brand-text,
            .nav-link span,
            .btn-consult span {
                display: none;
            }

            .brand-link {
                justify-content: center;
            }

            .nav-link {
                justify-content: center;
                padding: 0;
                border-left: none;
            }

            .nav-link i {
                font-size: 1.2rem;
            }

            .btn-consult {
                width: 56px;
                height: 44px;
            }

            .btn-consult i {
                font-size: 1rem;
            }
        }

        /* 移动端隐藏侧栏 */
        @media (max-width: 991.98px) {
            .sidebar {
                display: none;
            }
        }

        /* ===== 移动端顶部导航 ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--mobile-header-h);
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            z-index: 1050;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
        }

        .mobile-brand {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.5px;
        }

        .mobile-brand:hover {
            color: var(--text-main);
        }

        .hamburger {
            width: 40px;
            height: 40px;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 10px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            cursor: pointer;
            transition: var(--transition);
            padding: 0;
        }

        .hamburger:hover {
            border-color: var(--primary);
        }

        .hamburger span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        @media (max-width: 991.98px) {
            .mobile-header {
                display: flex;
            }

            .main-content {
                margin-left: 0 !important;
                margin-top: var(--mobile-header-h);
            }
        }

        /* ===== 抽屉菜单 ===== */
        .drawer-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(14, 20, 18, 0.8);
            z-index: 1055;
            opacity: 0;
            transition: opacity 0.3s;
        }

        .drawer-overlay.show {
            opacity: 1;
        }

        .drawer {
            position: fixed;
            top: 0;
            right: -320px;
            width: 290px;
            height: 100vh;
            background: var(--surface);
            border-left: 1px solid var(--border);
            z-index: 1060;
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            display: flex;
            flex-direction: column;
            padding: 24px 20px;
        }

        .drawer.show {
            right: 0;
        }

        .drawer-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--surface-2);
            color: var(--text-sub);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: none;
            font-size: 1rem;
            transition: var(--transition);
        }

        .drawer-close:hover {
            color: var(--danger);
            background: rgba(232, 120, 90, 0.15);
        }

        .drawer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            margin-bottom: 30px;
        }

        .drawer-brand .brand-logo {
            width: 40px;
            height: 40px;
            font-size: 0.95rem;
        }

        .drawer-nav {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .drawer-nav .nav-link {
            height: 46px;
            font-size: 0.95rem;
        }

        .drawer-footer {
            border-top: 1px solid var(--border);
            padding-top: 16px;
            text-align: center;
        }

        .drawer-footer .btn-consult {
            width: 100%;
        }

        .drawer-footer .sidebar-warn {
            margin-top: 10px;
            font-size: 0.7rem;
        }

        body.lock-scroll {
            overflow: hidden;
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--sidebar-w);
            min-height: calc(100vh - var(--mobile-header-h));
            display: flex;
            flex-direction: column;
        }

        @media (max-width: 1199.98px) {
            .main-content {
                margin-left: var(--sidebar-w-collapse);
            }
        }

        @media (max-width: 991.98px) {
            .main-content {
                margin-left: 0;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 64px 48px;
            display: flex;
            align-items: center;
            gap: 48px;
            min-height: 560px;
            background: var(--bg);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -50px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(13, 191, 119, 0.18), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: 20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(233, 196, 106, 0.1), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            flex: 1;
            position: relative;
            z-index: 2;
        }

        .hero h1 {
            font-size: var(--fs-hero);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-sub {
            font-size: 1.05rem;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 480px;
            margin-bottom: 32px;
        }

        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }

        .hero-badges {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .badge-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 16px;
            border-radius: 999px;
            background: linear-gradient(135deg, rgba(13, 191, 119, 0.12), rgba(233, 196, 106, 0.1));
            border: 1px solid rgba(233, 196, 106, 0.3);
        }

        .badge-num {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--accent);
        }

        .badge-label {
            font-size: var(--fs-sm);
            color: var(--text-sub);
        }

        .hero-image {
            flex: 0 0 46%;
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            min-height: 400px;
            max-height: 500px;
        }

        .hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }

        .hero-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(14, 20, 18, 0.6), transparent 40%, rgba(14, 20, 18, 0.2));
            border-radius: 24px;
        }

        @media (max-width: 991.98px) {
            .hero {
                flex-direction: column;
                padding: 48px 24px;
                gap: 32px;
            }

            .hero-image {
                flex: none;
                width: 100%;
                min-height: 280px;
                max-height: 320px;
            }

            .hero-sub {
                font-size: 0.95rem;
            }
        }

        @media (max-width: 575.98px) {
            .hero {
                padding: 36px 20px;
                gap: 24px;
            }

            .hero-btns {
                flex-direction: column;
                width: 100%;
            }

            .hero-btns .btn-primary,
            .hero-btns .btn-outline {
                width: 100%;
            }

            .hero-image {
                min-height: 180px;
            }
        }

        /* ===== 数据条 ===== */
        .stats-bar {
            padding: 32px 48px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-card {
            background: var(--surface);
            border-radius: 20px;
            padding: 24px 28px;
            border-top: 3px solid transparent;
            border-image: linear-gradient(135deg, var(--primary), var(--accent)) 1;
            border-top-style: solid;
            border-top-width: 3px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
            margin-bottom: 4px;
        }

        .stat-num .unit {
            font-size: 1rem;
            color: var(--accent);
            margin-left: 2px;
            font-weight: 600;
        }

        .stat-label {
            font-size: var(--fs-sm);
            color: var(--text-sub);
        }

        @media (max-width: 991.98px) {
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                padding: 32px 24px;
            }
        }

        @media (max-width: 575.98px) {
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                padding: 24px 20px;
                gap: 12px;
            }

            .stat-card {
                padding: 16px;
            }

            .stat-num {
                font-size: 1.4rem;
            }
        }

        /* ===== 三步上手 ===== */
        .steps-section {
            padding: 0 48px 80px;
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-header h2 {
            font-size: var(--fs-h2);
            margin-bottom: 6px;
        }

        .section-header p {
            color: var(--text-sub);
            font-size: var(--fs-sm);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0;
            background: var(--surface);
            border-radius: 24px;
            padding: 40px 32px;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .steps-grid::before {
            content: '';
            position: absolute;
            top: 80px;
            left: 16%;
            right: 16%;
            border-top: 2px dashed var(--border);
            z-index: 1;
        }

        .step-card {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 20px 24px;
            transition: var(--transition);
            border-radius: 16px;
        }

        .step-card:hover {
            background: var(--surface-2);
            transform: translateY(-6px);
        }

        .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #0B1F16;
            font-size: 1.1rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 0 12px rgba(233, 196, 106, 0.3);
        }

        .step-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: var(--fs-sm);
            color: var(--text-sub);
            line-height: 1.6;
            max-width: 220px;
            margin: 0 auto;
        }

        @media (max-width: 991.98px) {
            .steps-section {
                padding: 0 24px 60px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                padding: 32px 24px;
                gap: 24px;
            }

            .steps-grid::before {
                display: none;
            }
        }

        @media (max-width: 575.98px) {
            .steps-section {
                padding: 0 20px 48px;
            }

            .step-card {
                padding: 16px;
            }
        }

        /* ===== 最新资讯 ===== */
        .news-section {
            padding: 0 48px 80px;
        }

        .news-card {
            background: var(--surface);
            border-radius: 20px;
            padding: 24px;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
            border: 1px solid transparent;
        }

        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(13, 191, 119, 0.3);
        }

        .news-thumb {
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 16px;
            aspect-ratio: 16 / 9;
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .news-card:hover .news-thumb img {
            transform: scale(1.04);
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 3px 12px;
            border-radius: 999px;
            background: var(--surface-2);
            color: var(--text-sub);
            font-size: var(--fs-xs);
            font-weight: 500;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .tag:hover {
            color: var(--primary-light);
            border-color: var(--primary);
        }

        .time {
            font-size: var(--fs-xs);
            color: var(--text-mute);
        }

        .news-title {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .news-title a {
            color: var(--text-main);
        }

        .news-title a:hover {
            color: var(--primary-light);
        }

        .news-summary {
            font-size: var(--fs-sm);
            color: var(--text-sub);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .read-more {
            font-size: var(--fs-sm);
            font-weight: 500;
            color: var(--primary-light);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .read-more:hover {
            gap: 10px;
            color: var(--primary);
        }

        .read-more i {
            font-size: 0.75rem;
        }

        /* 空状态 */
        .empty-state {
            grid-column: 1 / -1;
            background: var(--surface-2);
            border: 2px dashed var(--border);
            border-radius: 20px;
            padding: 60px 24px;
            text-align: center;
            min-height: 240px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .empty-icon {
            font-size: 2.4rem;
            color: var(--text-mute);
            margin-bottom: 14px;
        }

        .empty-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .empty-sub {
            font-size: var(--fs-sm);
            color: var(--text-mute);
        }

        @media (max-width: 991.98px) {
            .news-section {
                padding: 0 24px 60px;
            }
        }

        @media (max-width: 575.98px) {
            .news-section {
                padding: 0 20px 48px;
            }

            .news-card {
                padding: 20px;
            }
        }

        /* ===== 案例证明 ===== */
        .cases-section {
            padding: 0 48px 80px;
        }

        .cases-layout {
            display: grid;
            grid-template-columns: 3fr 2fr;
            gap: 24px;
        }

        .case-large {
            background: var(--surface);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            transition: var(--transition);
            border: 1px solid rgba(13, 191, 119, 0.15);
        }

        .case-large:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .case-large .case-body {
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 32px;
            flex: 1;
        }

        .case-large .case-img {
            width: 100%;
            height: 180px;
            overflow: hidden;
        }

        .case-large .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-large h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .case-large p {
            font-size: var(--fs-sm);
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .case-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            background: linear-gradient(135deg, rgba(233, 196, 106, 0.18), rgba(246, 221, 155, 0.1));
            border: 1px solid rgba(233, 196, 106, 0.45);
            font-size: var(--fs-sm);
            font-weight: 700;
            color: var(--accent);
            align-self: flex-start;
        }

        .case-small-group {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .case-small {
            background: var(--surface);
            border-radius: 20px;
            padding: 20px;
            box-shadow: var(--shadow-card);
            flex: 1;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .case-small:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .case-small .case-img {
            height: 120px;
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .case-small .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-small h3 {
            font-size: 0.98rem;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .case-small p {
            font-size: var(--fs-sm);
            color: var(--text-sub);
            line-height: 1.5;
            margin-bottom: 10px;
            flex: 1;
        }

        .case-small .case-badge {
            font-size: var(--fs-xs);
            padding: 4px 12px;
        }

        @media (max-width: 991.98px) {
            .cases-section {
                padding: 0 24px 60px;
            }

            .cases-layout {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 575.98px) {
            .cases-section {
                padding: 0 20px 48px;
            }

            .case-large .case-body {
                padding: 24px;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 0 48px 80px;
        }

        .accordion {
            --bs-accordion-bg: var(--surface);
            --bs-accordion-border-color: var(--border);
            --bs-accordion-color: var(--text-main);
            --bs-accordion-btn-color: var(--text-main);
            --bs-accordion-btn-bg: var(--surface);
            --bs-accordion-active-color: var(--primary-light);
            --bs-accordion-active-bg: var(--surface-2);
            --bs-accordion-btn-focus-box-shadow: none;
            --bs-accordion-btn-padding-y: 1.2rem;
            --bs-accordion-btn-padding-x: 1.5rem;
        }

        .accordion-item {
            border: 1px solid var(--border);
            border-radius: 14px !important;
            margin-bottom: 16px;
            overflow: hidden;
            background: var(--surface);
        }

        .accordion-item:first-child,
        .accordion-item:last-child {
            border-radius: 14px !important;
        }

        .accordion-button {
            font-size: 1rem;
            font-weight: 600;
            padding: 1.2rem 1.5rem;
            position: relative;
            border-left: 3px solid transparent;
            transition: var(--transition);
            min-height: 56px;
            background: var(--surface);
            color: var(--text-main);
        }

        .accordion-button::after {
            background-image: none;
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            content: '\f067';
            color: var(--accent);
            font-size: 0.8rem;
            width: auto;
            height: auto;
            transition: var(--transition);
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--accent-light);
        }

        .accordion-button:not(.collapsed) {
            background: var(--surface-2);
            color: var(--primary-light);
            border-left-color: var(--primary);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid rgba(13, 191, 119, 0.3);
            outline-offset: -2px;
        }

        .accordion-body {
            background: var(--surface-2);
            color: var(--text-sub);
            font-size: var(--fs-sm);
            line-height: 1.7;
            padding: 0 1.5rem 1.5rem;
        }

        @media (max-width: 991.98px) {
            .faq-section {
                padding: 0 24px 60px;
            }
        }

        @media (max-width: 575.98px) {
            .faq-section {
                padding: 0 20px 48px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 0 48px 80px;
        }

        .cta-card {
            position: relative;
            border-radius: 24px;
            background: linear-gradient(135deg, #0E1B14, #0E2A1D, #0E3430);
            padding: 56px 48px;
            display: flex;
            align-items: center;
            gap: 48px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -80px;
            right: 20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(233, 196, 106, 0.12), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-left {
            flex: 1;
            position: relative;
            z-index: 2;
        }

        .cta-left h2 {
            font-size: var(--fs-h2);
            margin-bottom: 10px;
        }

        .cta-left p {
            color: var(--text-sub);
            font-size: var(--fs-sm);
            margin-bottom: 12px;
        }

        .cta-note {
            font-size: 0.72rem;
            color: var(--text-mute);
            line-height: 1.5;
        }

        .cta-right {
            flex-shrink: 0;
            position: relative;
            z-index: 2;
        }

        @media (max-width: 991.98px) {
            .cta-section {
                padding: 0 24px 60px;
            }

            .cta-card {
                flex-direction: column;
                padding: 40px 28px;
                gap: 28px;
                text-align: center;
            }

            .cta-right {
                width: 100%;
            }

            .cta-right .btn-gold {
                width: 100%;
            }
        }

        @media (max-width: 575.98px) {
            .cta-section {
                padding: 0 20px 48px;
            }

            .cta-card {
                padding: 32px 20px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 64px 48px 24px;
            margin-left: var(--sidebar-w);
            transition: margin-left 0.35s ease;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 48px;
            max-width: 1200px;
            margin: 0 auto 48px;
        }

        .footer-brand .brand-link {
            margin-bottom: 14px;
        }

        .footer-desc {
            font-size: var(--fs-sm);
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--surface-2);
            color: var(--text-sub);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #0B1F16;
            transform: translateY(-2px);
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            color: var(--text-sub);
            font-size: var(--fs-sm);
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: var(--fs-sm);
            color: var(--text-sub);
        }

        .footer-contact-item i {
            width: 18px;
            color: var(--primary);
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .footer-copy {
            font-size: var(--fs-xs);
            color: var(--text-mute);
        }

        .footer-icp {
            font-size: var(--fs-xs);
            color: var(--text-mute);
        }

        .footer-risks {
            max-width: 1200px;
            margin: 16px auto 0;
            font-size: 0.72rem;
            color: var(--text-mute);
            line-height: 1.6;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        @media (max-width: 1199.98px) {
            .site-footer {
                margin-left: var(--sidebar-w-collapse);
            }
        }

        @media (max-width: 991.98px) {
            .site-footer {
                margin-left: 0;
                padding: 48px 24px 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 返回顶部 ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--surface-2);
            border: 1px solid var(--border);
            color: var(--text-sub);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            cursor: pointer;
            z-index: 1030;
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
        }

        .back-top.show {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
        }

        .back-top:hover {
            background: var(--primary);
            color: #0B1F16;
            border-color: var(--primary);
            transform: translateY(-3px);
        }

        .back-top:focus-visible {
            outline: 3px solid rgba(13, 191, 119, 0.4);
            outline-offset: 2px;
        }

        @media (max-width: 575.98px) {
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 44px;
                height: 44px;
            }
        }

        /* ===== 文章页附加样式（统一骨架） ===== */
        .article-container {
            max-width: 780px;
            margin: 0 auto;
            padding: 48px 24px;
        }

        .breadcrumb-custom {
            font-size: var(--fs-sm);
            color: var(--text-mute);
            margin-bottom: 24px;
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .breadcrumb-custom a {
            color: var(--text-mute);
        }

        .breadcrumb-custom a:hover {
            color: var(--primary-light);
        }

        .breadcrumb-custom .sep {
            color: var(--border);
        }

        .breadcrumb-custom .current {
            color: var(--text-sub);
        }

        /* ===== 分类页锚点 ===== */
        .anchors {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }

        .anchors a {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: 999px;
            background: var(--surface);
            border: 1px solid var(--border);
            color: var(--text-sub);
            font-size: var(--fs-sm);
            transition: var(--transition);
        }

        .anchors a:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            background: rgba(13, 191, 119, 0.06);
        }

        /* ===== 焦点通用 ===== */
        a:focus-visible {
            outline: 3px solid rgba(13, 191, 119, 0.4);
            outline-offset: 2px;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --bg: #0E1412;
            --surface: #161E1A;
            --surface-2: #1E2924;
            --border: #29352F;
            --primary: #0DBF77;
            --primary-light: #4DE3A8;
            --primary-dark: #087F51;
            --accent: #E9C46A;
            --accent-light: #F6DD9B;
            --text-main: #F2F7F4;
            --text-sub: #9AABA3;
            --text-mute: #5F7269;
            --danger: #E8785A;

            --fs-hero: clamp(2rem, 4vw, 3rem);
            --fs-h2: clamp(1.3rem, 2.4vw, 1.7rem);
            --fs-h3: 1.05rem;
            --fs-body: 1rem;
            --fs-sm: 0.85rem;
            --fs-xs: 0.78rem;

            --radius-lg: 24px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --radius-pill: 999px;

            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 14px 44px rgba(0, 0, 0, 0.35);
            --shadow-primary: 0 8px 24px rgba(13, 191, 119, 0.25);
            --shadow-accent: 0 0 12px rgba(233, 196, 106, 0.25);

            --sidebar-width: 270px;
            --sidebar-icon-width: 96px;
            --spacer-section: 80px;
            --spacer-section-mobile: 48px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--bg);
            color: var(--text-main);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
            font-size: var(--fs-body);
            line-height: 1.7;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary);
        }

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

        button,
        input {
            font-family: inherit;
        }

        .btn {
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: all 0.25s ease;
        }
        .btn:focus {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
            box-shadow: none;
        }

        .btn-primary-custom {
            background: linear-gradient(135deg, #0DBF77, #4DE3A8);
            color: #0B1F16;
            height: 48px;
            padding: 0 28px;
            border-radius: 12px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            box-shadow: var(--shadow-primary);
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            filter: brightness(1.08);
            box-shadow: 0 10px 32px rgba(13, 191, 119, 0.32);
            color: #0B1F16;
            transform: translateY(-1px);
        }
        .btn-primary-custom:active {
            transform: translateY(1px);
            filter: brightness(0.98);
        }

        .btn-outline-custom {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-main);
            height: 48px;
            padding: 0 28px;
            border-radius: 12px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all 0.25s ease;
        }
        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            background: rgba(13, 191, 119, 0.08);
            transform: translateY(-1px);
        }
        .btn-outline-custom:active {
            transform: translateY(0);
        }

        .btn-gold-custom {
            background: linear-gradient(135deg, #E9C46A, #F6DD9B);
            color: #0B1F16;
            height: 48px;
            padding: 0 28px;
            border-radius: 12px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            box-shadow: var(--shadow-accent);
            transition: all 0.3s ease;
        }
        .btn-gold-custom:hover {
            filter: brightness(1.05);
            box-shadow: 0 10px 28px rgba(233, 196, 106, 0.3);
            color: #0B1F16;
            transform: translateY(-1px);
        }

        /* ===== 左侧垂直导航 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--surface);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 1040;
            transition: width 0.3s ease;
            overflow-y: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
        }

        .sidebar-header {
            padding: 28px 24px 20px;
            border-bottom: 1px solid var(--border);
        }

        .brand-link {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-main);
            transition: opacity 0.2s;
        }
        .brand-link:hover {
            color: var(--text-main);
            opacity: 0.9;
        }

        .brand-logo {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #0B1F16;
            font-weight: 800;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            letter-spacing: -0.5px;
        }

        .brand-name {
            font-weight: 800;
            font-size: 1.1rem;
            white-space: nowrap;
            color: var(--text-main);
            font-variant-numeric: tabular-nums;
        }

        .brand-tag {
            display: block;
            font-size: var(--fs-xs);
            color: var(--text-mute);
            margin-top: 8px;
            padding-left: 54px;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .sidebar-nav {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 20px 16px;
        }

        .nav-link-custom {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 16px;
            border-radius: 10px;
            color: var(--text-sub);
            font-weight: 500;
            font-size: 0.92rem;
            position: relative;
            border-left: 3px solid transparent;
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .nav-link-custom i {
            width: 20px;
            text-align: center;
            font-size: 1.05rem;
        }
        .nav-link-custom:hover {
            color: var(--primary-light);
            background: rgba(13, 191, 119, 0.06);
        }
        .nav-link-custom.active {
            color: var(--primary-light);
            background: rgba(13, 191, 119, 0.12);
            border-left-color: var(--primary);
            font-weight: 600;
        }
        .nav-link-custom.active::before {
            content: '';
            position: absolute;
            left: -3px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            border-radius: 0 4px 4px 0;
            background: linear-gradient(180deg, var(--primary), var(--primary-light));
        }

        .sidebar-footer {
            padding: 20px 24px 24px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .sidebar-footer .btn-outline-custom {
            width: 100%;
            height: 44px;
        }

        .sidebar-risk {
            font-size: var(--fs-xs);
            color: var(--text-mute);
            text-align: center;
            line-height: 1.5;
        }

        /* ===== 折叠模式 992-1199 ===== */
        @media (max-width: 1199px) {
            .sidebar {
                width: var(--sidebar-icon-width);
            }
            .sidebar .brand-link span,
            .sidebar .brand-tag,
            .sidebar .nav-link-custom span,
            .sidebar .btn-outline-custom span {
                display: none;
            }
            .sidebar .sidebar-header {
                padding: 24px 16px;
                display: flex;
                justify-content: center;
            }
            .sidebar .brand-link {
                justify-content: center;
            }
            .sidebar .brand-logo {
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
            }
            .sidebar .sidebar-nav {
                padding: 16px 12px;
                align-items: center;
            }
            .sidebar .nav-link-custom {
                padding: 0;
                justify-content: center;
                width: 48px;
                height: 48px;
                border-radius: 12px;
                border-left: none;
            }
            .sidebar .nav-link-custom.active::before {
                left: auto;
                right: -6px;
                top: 50%;
                transform: translateY(-50%);
                width: 4px;
                height: 20px;
            }
            .sidebar .sidebar-footer {
                padding: 16px;
                align-items: center;
            }
            .sidebar .btn-outline-custom {
                width: 48px;
                padding: 0;
                justify-content: center;
            }
            .main-content {
                margin-left: var(--sidebar-icon-width);
            }
        }

        /* ===== 移动端顶部导航 ===== */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            height: 60px;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            padding: 0 20px;
            z-index: 1030;
            align-items: center;
            justify-content: space-between;
        }

        .mobile-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-main);
            font-weight: 800;
            font-size: 1.05rem;
        }
        .mobile-brand:hover {
            color: var(--text-main);
        }

        .brand-logo-sm {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #0B1F16;
            font-weight: 800;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .mobile-menu-btn {
            width: 44px;
            height: 44px;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 10px;
            color: var(--text-main);
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
        }
        .mobile-menu-btn:hover {
            border-color: var(--primary);
            color: var(--primary-light);
        }

        /* ===== 抽屉 ===== */
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1045;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s;
        }
        .drawer-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .drawer {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            max-width: 85vw;
            height: 100vh;
            background: var(--surface);
            z-index: 1050;
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            display: flex;
            flex-direction: column;
            padding: 24px 20px;
            overflow-y: auto;
        }
        .drawer.open {
            right: 0;
        }

        .drawer-close {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--surface-2);
            border: 1px solid var(--border);
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
        }
        .drawer-close:hover {
            background: var(--border);
            color: var(--primary-light);
        }

        .drawer-body {
            display: flex;
            flex-direction: column;
            gap: 24px;
            margin-top: 48px;
        }

        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .drawer-link {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 16px;
            border-radius: 10px;
            color: var(--text-sub);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.2s;
        }
        .drawer-link:hover {
            color: var(--primary-light);
            background: rgba(13, 191, 119, 0.06);
        }
        .drawer-link.active {
            color: var(--primary-light);
            background: rgba(13, 191, 119, 0.12);
            border-left: 3px solid var(--primary);
        }
        .drawer-link i {
            width: 20px;
            text-align: center;
        }

        .drawer-footer {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .drawer-footer .btn-primary-custom {
            width: 100%;
        }

        .drawer-risk {
            font-size: var(--fs-xs);
            color: var(--text-mute);
            text-align: center;
            line-height: 1.5;
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            padding: 0 48px 64px;
            transition: margin-left 0.3s ease;
        }

        /* ===== 分类页 Hero ===== */
        .page-hero {
            position: relative;
            padding: 56px 0 40px;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(13, 191, 119, 0.18), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .breadcrumb-bar {
            font-size: var(--fs-sm);
            color: var(--text-mute);
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb-bar a {
            color: var(--text-sub);
            transition: color 0.2s;
        }
        .breadcrumb-bar a:hover {
            color: var(--primary-light);
        }
        .breadcrumb-bar i {
            font-size: 0.7rem;
            color: var(--text-mute);
        }
        .breadcrumb-bar .current {
            color: var(--primary-light);
        }

        .page-hero-inner {
            display: flex;
            align-items: stretch;
            gap: 48px;
            max-width: 1200px;
        }

        .page-hero-text {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 20px 0;
        }

        .page-hero-text h1 {
            font-size: var(--fs-hero);
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-main);
            margin-bottom: 16px;
            text-wrap: balance;
        }

        .page-hero-text h1 .highlight {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-hero-sub {
            font-size: 1.05rem;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 520px;
        }

        .page-hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .page-hero-art {
            flex: 0 0 42%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 320px;
            background-size: cover;
            background-position: center;
            position: relative;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }

        .page-hero-art::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14, 20, 18, 0.4), transparent 70%);
            pointer-events: none;
        }

        /* ===== 锚点辅助导航 ===== */
        .anchor-nav {
            position: sticky;
            top: 0;
            z-index: 900;
            display: flex;
            gap: 10px;
            padding: 20px 0;
            margin: 24px 0 8px;
            background: linear-gradient(180deg, var(--bg) 85%, transparent);
            overflow-x: auto;
            scrollbar-width: none;
            -webkit-overflow-scrolling: touch;
        }
        .anchor-nav::-webkit-scrollbar {
            display: none;
        }

        .anchor-link {
            display: inline-flex;
            align-items: center;
            height: 38px;
            padding: 0 20px;
            border-radius: var(--radius-pill);
            background: var(--surface);
            border: 1px solid var(--border);
            color: var(--text-sub);
            font-size: var(--fs-sm);
            font-weight: 500;
            white-space: nowrap;
            transition: all 0.2s ease;
        }
        .anchor-link:hover {
            color: var(--primary-light);
            border-color: var(--primary);
            background: var(--surface-2);
            transform: translateY(-1px);
        }
        .anchor-link i {
            margin-right: 6px;
            font-size: 0.8rem;
        }

        /* ===== 分类区块通用 ===== */
        .category-section {
            padding: var(--spacer-section) 0;
            max-width: 1200px;
            border-bottom: 1px solid var(--border);
        }
        .category-section:last-of-type {
            border-bottom: none;
        }

        .section-head {
            margin-bottom: 36px;
        }

        .section-head h2 {
            font-size: var(--fs-h2);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            position: relative;
            display: inline-block;
        }

        .section-head h2::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -8px;
            width: 48px;
            height: 3px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
        }

        .section-head p {
            color: var(--text-sub);
            font-size: 0.95rem;
            margin-top: 16px;
            max-width: 680px;
            line-height: 1.7;
        }

        /* ===== 规则速览卡片 ===== */
        .rule-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .rule-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .rule-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            opacity: 0.7;
            transition: opacity 0.3s;
        }

        .rule-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(13, 191, 119, 0.5);
        }

        .rule-icon {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: rgba(13, 191, 119, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 1.3rem;
            color: var(--primary-light);
        }

        .rule-card h3 {
            font-size: var(--fs-h3);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .rule-card p {
            color: var(--text-sub);
            font-size: var(--fs-sm);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== 投注方式拆解 ===== */
        .betting-list {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 0 32px;
            box-shadow: var(--shadow-card);
        }

        .betting-item {
            display: flex;
            align-items: flex-start;
            gap: 24px;
            padding: 32px 0;
            border-bottom: 1px solid var(--border);
        }
        .betting-item:last-child {
            border-bottom: none;
        }

        .betting-icon {
            width: 56px;
            height: 56px;
            border-radius: 18px;
            background: linear-gradient(135deg, rgba(233, 196, 106, 0.2), rgba(13, 191, 119, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent);
            flex-shrink: 0;
        }

        .betting-content {
            flex: 1;
        }

        .betting-content h3 {
            font-size: var(--fs-h3);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .betting-tag {
            display: inline-block;
            background: var(--surface-2);
            color: var(--text-sub);
            font-size: 0.75rem;
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            font-weight: 500;
            border: 1px solid var(--border);
        }

        .betting-content p {
            color: var(--text-sub);
            font-size: var(--fs-sm);
            line-height: 1.7;
            margin: 8px 0 0;
        }

        /* ===== 策略路径 ===== */
        .strategy-wrap {
            display: flex;
            gap: 40px;
            align-items: center;
        }

        .strategy-path {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            position: relative;
            padding-bottom: 32px;
        }
        .step-item:last-child {
            padding-bottom: 0;
        }
        .step-item:last-child::before {
            display: none;
        }

        .step-item::before {
            content: '';
            position: absolute;
            left: 27px;
            top: 56px;
            bottom: 0;
            width: 1px;
            background: linear-gradient(180deg, var(--primary), var(--border));
            opacity: 0.5;
        }

        .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #0B1F16;
            font-weight: 800;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: var(--shadow-accent);
            position: relative;
            z-index: 1;
            font-variant-numeric: tabular-nums;
        }

        .step-content h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .step-content p {
            color: var(--text-sub);
            font-size: var(--fs-sm);
            line-height: 1.6;
            margin: 0;
        }

        .strategy-visual {
            flex: 0 0 42%;
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }

        .strategy-img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }

        .strategy-note {
            position: absolute;
            left: 20px;
            bottom: 20px;
            right: 20px;
            background: rgba(14, 20, 18, 0.82);
            border: 1px solid rgba(233, 196, 106, 0.3);
            border-radius: 12px;
            padding: 14px 18px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-main);
            font-size: var(--fs-sm);
            font-weight: 500;
        }

        .strategy-note i {
            color: var(--accent);
            font-size: 1.1rem;
        }

        /* ===== 服务保障 ===== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: transparent;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent), var(--primary));
            opacity: 0.5;
            transition: opacity 0.3s;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(233, 196, 106, 0.35);
        }
        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            background: rgba(233, 196, 106, 0.1);
            border: 1px solid rgba(233, 196, 106, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--accent);
            margin-bottom: 18px;
        }

        .service-card h3 {
            font-size: var(--fs-h3);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .service-card p {
            color: var(--text-sub);
            font-size: var(--fs-sm);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== FAQ 手风琴 ===== */
        .custom-accordion .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border) !important;
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.3s;
        }
        .custom-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(13, 191, 119, 0.4) !important;
        }

        .custom-accordion .accordion-button {
            background: var(--surface);
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 600;
            padding: 20px 24px;
            min-height: 56px;
            box-shadow: none;
            border: none;
            border-left: 3px solid transparent;
            border-radius: 0;
            transition: all 0.25s ease;
        }
        .custom-accordion .accordion-button:hover {
            background: var(--surface-2);
            color: var(--primary-light);
        }
        .custom-accordion .accordion-button:not(.collapsed) {
            background: var(--surface-2);
            color: var(--primary-light);
            border-left-color: var(--primary);
        }
        .custom-accordion .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid rgba(13, 191, 119, 0.3);
            outline-offset: -2px;
        }

        .custom-accordion .accordion-button::after {
            content: '\f067';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            background-image: none;
            width: auto;
            height: auto;
            color: var(--accent);
            font-size: 0.9rem;
            transition: transform 0.3s ease;
        }
        .custom-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
        }

        .custom-accordion .accordion-body {
            padding: 0 24px 24px 24px;
            color: var(--text-sub);
            font-size: var(--fs-sm);
            line-height: 1.8;
            border-left: 3px solid var(--primary);
            background: var(--surface-2);
        }

        /* ===== CTA 横幅 ===== */
        .category-cta {
            margin-top: var(--spacer-section);
            background: linear-gradient(135deg, #0B1F16, #0D3B28);
            border-radius: var(--radius-lg);
            padding: 48px 48px 40px;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(233, 196, 106, 0.15);
        }

        .category-cta::before {
            content: '';
            position: absolute;
            bottom: -100px;
            right: -40px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(233, 196, 106, 0.15), transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 32px;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
        }

        .cta-text h2 {
            font-size: clamp(1.4rem, 2.5vw, 1.9rem);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .cta-text p {
            color: var(--text-sub);
            font-size: 0.95rem;
            margin: 0;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }

        .cta-risk {
            font-size: var(--fs-xs);
            color: var(--text-mute);
            margin-top: 24px;
            position: relative;
            z-index: 1;
            line-height: 1.5;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 64px 48px 24px;
            margin-left: var(--sidebar-width);
            transition: margin-left 0.3s ease;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .footer-brand .brand-link {
            margin-bottom: 4px;
        }

        .footer-desc {
            color: var(--text-sub);
            font-size: var(--fs-sm);
            line-height: 1.7;
            margin: 0;
            max-width: 280px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-sub);
            font-size: 1rem;
            transition: all 0.2s ease;
        }
        .footer-social a:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            transform: translateY(-2px);
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: var(--text-sub);
            font-size: var(--fs-sm);
            transition: color 0.2s, padding-left 0.2s;
        }
        .footer-links a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-sub);
            font-size: var(--fs-sm);
        }
        .footer-contact-item i {
            color: var(--primary);
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            margin-top: 48px;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            flex-wrap: wrap;
        }

        .footer-copy {
            color: var(--text-mute);
            font-size: var(--fs-xs);
        }

        .footer-icp {
            color: var(--text-mute);
            font-size: var(--fs-xs);
        }

        .footer-risks {
            max-width: 1200px;
            margin: 16px auto 0;
            color: var(--text-mute);
            font-size: var(--fs-xs);
            line-height: 1.6;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        /* ===== 返回顶部 ===== */
        .back-to-top {
            position: fixed;
            right: 32px;
            bottom: 32px;
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: var(--surface-2);
            border: 1px solid var(--border);
            color: var(--text-main);
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: all 0.3s ease;
            z-index: 1020;
        }
        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-to-top:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            box-shadow: var(--shadow-card);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .sidebar {
                display: none;
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding: 0 24px 48px;
            }
            .site-footer {
                margin-left: 0;
                padding: 48px 24px 20px;
            }
            .page-hero-inner {
                flex-direction: column;
                gap: 24px;
            }
            .page-hero-art {
                flex: 0 0 auto;
                width: 100%;
                min-height: 220px;
            }
            .rule-grid {
                grid-template-columns: 1fr;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .strategy-wrap {
                flex-direction: column;
            }
            .strategy-visual {
                flex: 0 0 auto;
                width: 100%;
            }
            .category-cta {
                padding: 36px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .category-section {
                padding: var(--spacer-section-mobile) 0;
            }
        }

        @media (max-width: 767px) {
            .main-content {
                padding: 0 16px 40px;
            }
            .page-hero {
                padding: 32px 0 28px;
            }
            .page-hero-text h1 {
                font-size: 1.6rem;
            }
            .page-hero-sub {
                font-size: 0.92rem;
            }
            .page-hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .page-hero-actions .btn-primary-custom,
            .page-hero-actions .btn-outline-custom {
                width: 100%;
            }
            .anchor-nav {
                padding: 14px 0;
            }
            .betting-list {
                padding: 0 20px;
            }
            .betting-item {
                gap: 16px;
                padding: 24px 0;
            }
            .step-item {
                gap: 14px;
            }
            .step-item::before {
                left: 24px;
            }
            .step-num {
                width: 48px;
                height: 48px;
                font-size: 0.9rem;
            }
            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-actions {
                width: 100%;
            }
            .cta-actions .btn-gold-custom,
            .cta-actions .btn-outline-custom {
                flex: 1;
                min-width: 140px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .back-to-top {
                right: 16px;
                bottom: 16px;
                width: 42px;
                height: 42px;
            }
        }

        @media (max-width: 575px) {
            .page-hero-art {
                min-height: 180px;
            }
            .rule-card {
                padding: 24px 20px;
            }
            .service-card {
                padding: 24px 20px;
            }
            .strategy-note {
                left: 12px;
                right: 12px;
                bottom: 12px;
                padding: 10px 14px;
                font-size: 0.78rem;
            }
            .custom-accordion .accordion-button {
                padding: 16px 18px;
                font-size: 0.92rem;
            }
            .custom-accordion .accordion-body {
                padding: 0 18px 18px 18px;
                font-size: 0.82rem;
            }
            .cta-actions .btn-gold-custom,
            .cta-actions .btn-outline-custom {
                width: 100%;
                flex: none;
            }
            .category-cta {
                padding: 28px 20px;
            }
        }

        @media (max-width: 1199px) and (min-width: 992px) {
            .rule-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .betting-list {
                padding: 0 24px;
            }
            .page-hero-inner {
                gap: 32px;
            }
            .page-hero-art {
                flex-basis: 38%;
            }
        }

/* roulang page: article */
:root {
  --bg: #0E1412;
  --surface: #161E1A;
  --surface-2: #1E2924;
  --border: #29352F;
  --primary: #0DBF77;
  --primary-light: #4DE3A8;
  --primary-dark: #087F51;
  --accent: #E9C46A;
  --accent-light: #F6DD9B;
  --text-main: #F2F7F4;
  --text-sub: #9AABA3;
  --text-mute: #5F7269;
  --danger: #E8785A;
  --fs-hero: clamp(2rem, 4vw, 3rem);
  --fs-h2: clamp(1.3rem, 2.4vw, 1.7rem);
  --fs-h3: 1rem;
  --fs-body: 0.95rem;
  --fs-sm: 0.85rem;
  --fs-xs: 0.75rem;
  --radius-lg: 24px;
  --radius-md: 20px;
  --radius-sm: 12px;
  --shadow-md: 0 8px 30px rgba(0,0,0,.25);
  --shadow-lg: 0 14px 44px rgba(0,0,0,.35);
  --shadow-primary: 0 8px 24px rgba(13,191,119,.25);
  --shadow-accent: 0 0 12px rgba(233,196,106,.25);
  --font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  --sidebar-w: 270px;
  --sidebar-w-sm: 96px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-family);
  font-size: var(--fs-body);
  line-height: 1.7;
  background: var(--bg);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
  font-variant-numeric: tabular-nums;
  overflow-x: hidden;
}
a { color: var(--primary-light); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }
h1, h2, h3, h4, h5, h6 { margin-top: 0; text-wrap: balance; }
p { margin-top: 0; }
ul, ol { margin-top: 0; }
.container { max-width: 1200px; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  z-index: 1040;
  display: flex;
  flex-direction: column;
  padding: 28px 20px 20px;
  transition: width .3s ease, padding .3s ease;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.brand-link { display: flex; align-items: center; gap: 12px; }
.brand-logo {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.1rem; color: #0B1F16;
  flex-shrink: 0;
}
.brand-name {
  font-size: 1.05rem; font-weight: 800; color: var(--text-main);
  white-space: nowrap;
}
.brand-tag {
  font-size: var(--fs-xs);
  color: var(--text-mute);
  margin-top: 2px;
  letter-spacing: .2em;
}
.sidebar-nav {
  display: flex; flex-direction: column; gap: 4px;
  padding: 20px 0; flex: 1;
}
.sidebar-nav .nav-link {
  display: flex; align-items: center; gap: 12px;
  padding: 13px 16px;
  border-radius: 12px;
  color: var(--text-sub);
  font-weight: 500;
  border-left: 4px solid transparent;
  transition: all .2s ease;
  background: transparent;
}
.sidebar-nav .nav-link i { width: 20px; text-align: center; font-size: 1.05rem; }
.sidebar-nav .nav-link:hover {
  color: var(--primary-light);
  background: rgba(13,191,119,.08);
  text-decoration: none;
}
.sidebar-nav .nav-link.active {
  color: var(--primary-light);
  background: rgba(13,191,119,.1);
  border-left-color: var(--primary);
}
.sidebar-tools {
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 12px;
}
.btn-outline-sidebar {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: transparent;
  color: var(--text-sub);
  font-weight: 600;
  transition: all .2s ease;
  text-decoration: none;
}
.btn-outline-sidebar:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(13,191,119,.06);
}
.sidebar-risk {
  font-size: var(--fs-xs);
  color: var(--text-mute);
  text-align: center;
  margin: 0;
  line-height: 1.4;
}

/* ===== Mobile Header ===== */
.mobile-header {
  display: none;
  position: fixed; top: 0; left: 0; right: 0;
  height: 60px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 1030;
  align-items: center; justify-content: space-between;
  padding: 0 20px;
}
.mobile-brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none;
}
.mobile-brand .brand-logo { width: 36px; height: 36px; font-size: .9rem; border-radius: 10px; }
.hamburger-btn {
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text-main);
  font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s ease;
}
.hamburger-btn:hover { border-color: var(--primary); color: var(--primary); }

/* ===== Mobile Drawer ===== */
.mobile-drawer {
  position: fixed; top: 0; right: -320px; bottom: 0;
  width: 300px; max-width: 85vw;
  background: var(--surface);
  z-index: 1080;
  transition: right .35s ease;
  display: flex; flex-direction: column;
  padding: 24px 20px;
  box-shadow: -10px 0 30px rgba(0,0,0,.4);
  overflow-y: auto;
}
.mobile-drawer.open { right: 0; }
.drawer-header {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.drawer-brand { display: flex; align-items: center; gap: 10px; }
.drawer-brand .brand-logo { width: 38px; height: 38px; font-size: .95rem; border-radius: 10px; }
.drawer-close-btn {
  width: 36px; height: 36px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
  color: var(--text-sub);
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s;
}
.drawer-close-btn:hover { color: var(--danger); border-color: var(--danger); }
.drawer-nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.drawer-link {
  display: flex; align-items: center; gap: 12px;
  padding: 13px 16px;
  border-radius: 12px;
  color: var(--text-sub); font-weight: 500;
  border-left: 4px solid transparent;
  transition: all .2s;
}
.drawer-link:hover { color: var(--primary-light); background: rgba(13,191,119,.08); text-decoration: none; }
.drawer-link.active { color: var(--primary-light); background: rgba(13,191,119,.1); border-left-color: var(--primary); }
.drawer-link i { width: 20px; text-align: center; }
.drawer-footer {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex; flex-direction: column; gap: 12px;
}
.drawer-risk { font-size: var(--fs-xs); color: var(--text-mute); text-align: center; margin: 0; }
.btn-block { width: 100%; }

/* ===== Drawer Overlay ===== */
.drawer-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 1070;
  opacity: 0;
  visibility: hidden;
  transition: all .3s ease;
}
.drawer-overlay.show { opacity: 1; visibility: visible; }
body.drawer-open { overflow: hidden; }

/* ===== Main Content ===== */
.main-content {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex; flex-direction: column;
}
.article-wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 32px 64px;
  width: 100%;
}

/* ===== Breadcrumb ===== */
.breadcrumb-nav {
  margin-bottom: 32px;
}
.breadcrumb-nav .breadcrumb {
  margin: 0;
  padding: 0;
  background: transparent;
  font-size: var(--fs-sm);
}
.breadcrumb-nav .breadcrumb-item a {
  color: var(--text-sub);
  transition: color .2s;
}
.breadcrumb-nav .breadcrumb-item a:hover { color: var(--primary-light); }
.breadcrumb-nav .breadcrumb-item.active {
  color: var(--text-mute);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 220px;
}
.breadcrumb-nav .breadcrumb-item + .breadcrumb-item::before {
  color: var(--text-mute);
  content: "/";
}

/* ===== Article Box ===== */
.article-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 48px 40px;
  box-shadow: var(--shadow-md);
  margin-bottom: 40px;
}
.article-header {
  margin-bottom: 28px;
}
.article-meta-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}
.badge-cat {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--text-sub);
  font-size: var(--fs-xs);
  font-weight: 600;
  border: 1px solid var(--border);
  transition: all .2s;
}
.badge-cat:hover { color: var(--primary-light); border-color: var(--primary); }
.article-meta-item {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: var(--fs-xs);
  color: var(--text-mute);
}
.article-meta-item i { color: var(--text-mute); }
.article-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-main);
  margin: 0 0 20px;
}
.article-divider {
  width: 56px; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 999px;
}

/* ===== Article Body ===== */
.article-body {
  max-width: 780px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text-main);
}
.article-body > *:last-child { margin-bottom: 0; }
.article-body p {
  margin-bottom: 24px;
  color: var(--text-main);
}
.article-body h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 40px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.article-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 32px 0 12px;
}
.article-body h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 28px 0 10px;
}
.article-body blockquote {
  border-left: 3px solid var(--primary);
  padding: 16px 20px;
  background: var(--surface-2);
  border-radius: 0 12px 12px 0;
  margin: 24px 0;
  color: var(--text-sub);
  font-style: normal;
}
.article-body img {
  max-width: 100%;
  border-radius: 12px;
  margin: 24px 0;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: var(--fs-sm);
}
.article-body table th,
.article-body table td {
  border: 1px solid var(--border);
  padding: 12px 14px;
  text-align: left;
}
.article-body table th {
  background: var(--surface-2);
  color: var(--text-main);
  font-weight: 600;
}
.article-body ul,
.article-body ol {
  padding-left: 24px;
  margin-bottom: 24px;
}
.article-body li { margin-bottom: 8px; }
.article-body a { color: var(--primary-light); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--primary); }
.article-body code {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: .9em;
  color: var(--accent);
}
.article-body pre {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
  margin: 24px 0;
}
.article-body pre code {
  background: transparent;
  border: 0;
  padding: 0;
  color: var(--text-main);
}
.article-empty {
  text-align: center;
  padding: 80px 20px;
}
.article-empty i {
  font-size: 3rem;
  color: var(--text-mute);
  margin-bottom: 20px;
  display: block;
}
.article-empty p {
  font-size: 1.1rem;
  color: var(--text-sub);
  margin-bottom: 24px;
}

/* ===== Article Pager ===== */
.article-pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.pager-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-sub);
  font-size: var(--fs-sm);
  transition: all .2s ease;
  max-width: 280px;
  text-decoration: none;
}
.pager-link:hover {
  color: var(--primary-light);
  border-color: var(--primary);
  background: rgba(13,191,119,.06);
  text-decoration: none;
}
.pager-link .pager-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.pager-link.pager-next { margin-left: auto; }

/* ===== Related ===== */
.related-section {
  margin-bottom: 40px;
}
.section-title {
  font-size: var(--fs-h2);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}
.section-subtitle {
  font-size: var(--fs-sm);
  color: var(--text-sub);
  margin-bottom: 28px;
}
.news-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(13,191,119,.4);
}
.news-card-img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 16px;
}
.news-card .badge-cat { margin-bottom: 12px; align-self: flex-start; }
.news-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 10px;
}
.news-card h3 a { color: var(--text-main); transition: color .2s; }
.news-card h3 a:hover { color: var(--primary-light); }
.news-card p {
  font-size: var(--fs-sm);
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.read-more {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .2s ease;
}
.read-more:hover { gap: 10px; color: var(--primary-light); }

/* ===== Back Entry ===== */
.back-entry {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 16px 0 8px;
}
.btn-outline-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: transparent;
  color: var(--text-sub);
  font-weight: 600;
  transition: all .2s ease;
  text-decoration: none;
}
.btn-outline-primary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(13,191,119,.08);
  text-decoration: none;
  transform: translateY(-1px);
}
.btn-outline-primary:active { transform: translateY(1px); }

/* ===== Footer ===== */
.site-footer {
  margin-left: var(--sidebar-w);
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 64px 48px 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto 32px;
}
.footer-brand .brand-link {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .brand-logo { width: 38px; height: 38px; font-size: .95rem; border-radius: 10px; }
.footer-brand .brand-name { font-size: 1rem; font-weight: 800; color: var(--text-main); }
.footer-desc {
  font-size: var(--fs-sm);
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 260px;
}
.footer-social {
  display: flex; gap: 10px;
}
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-sub);
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem;
  transition: all .2s ease;
}
.footer-social a:hover {
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.footer-col h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 18px;
}
.footer-links {
  display: flex; flex-direction: column; gap: 10px;
}
.footer-links a {
  color: var(--text-sub);
  font-size: var(--fs-sm);
  transition: color .2s, padding-left .2s;
  text-decoration: none;
}
.footer-links a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}
.footer-contact {
  display: flex; flex-direction: column; gap: 12px;
}
.footer-contact-item {
  display: flex; align-items: center; gap: 10px;
  font-size: var(--fs-sm);
  color: var(--text-sub);
}
.footer-contact-item i { color: var(--primary); width: 16px; text-align: center; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  border-top: 1px solid var(--border);
  padding-top: 20px;
  max-width: 1200px;
  margin: 0 auto;
  font-size: var(--fs-xs);
  color: var(--text-mute);
}
.footer-copy { color: var(--text-mute); }
.footer-icp { color: var(--text-mute); }
.footer-risks {
  max-width: 1200px;
  margin: 16px auto 0;
  font-size: 0.75rem;
  color: var(--text-mute);
  line-height: 1.6;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* ===== Back to top ===== */
.back-top-btn {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px; height: 46px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-sub);
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all .3s ease;
  box-shadow: var(--shadow-md);
}
.back-top-btn.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-top-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  box-shadow: var(--shadow-primary);
}

/* ===== Responsive ===== */
@media (min-width: 992px) and (max-width: 1199px) {
  .sidebar { width: var(--sidebar-w-sm); padding: 28px 12px 20px; }
  .brand { justify-content: center; padding-bottom: 20px; }
  .brand-name, .brand-tag { display: none; }
  .sidebar-nav { align-items: center; }
  .sidebar-nav .nav-link { justify-content: center; padding: 14px; }
  .sidebar-nav .nav-link span { display: none; }
  .sidebar-nav .nav-link i { width: auto; font-size: 1.2rem; }
  .sidebar-tools { align-items: center; }
  .btn-outline-sidebar { width: 44px; padding: 0; font-size: 0; }
  .btn-outline-sidebar::before { content: "\f0c0"; font-family: "Font Awesome 6 Free"; font-weight: 900; font-size: 1rem; }
  .sidebar-risk { display: none; }
  .main-content { margin-left: var(--sidebar-w-sm); }
  .site-footer { margin-left: var(--sidebar-w-sm); padding: 48px 32px 20px; }
}

@media (max-width: 991px) {
  .sidebar { display: none; }
  .mobile-header { display: flex; }
  .main-content { margin-left: 0; }
  .site-footer { margin-left: 0; padding: 48px 24px 20px; }
  .article-wrap { padding: 28px 20px 48px; }
  .article-box { padding: 32px 24px 28px; border-radius: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .back-top-btn { right: 16px; bottom: 16px; }
}

@media (max-width: 767px) {
  .article-wrap { padding: 20px 16px 40px; }
  .article-box { padding: 28px 20px 24px; }
  .article-title { font-size: 1.5rem; }
  .article-meta-top { gap: 10px; }
  .article-pager { flex-direction: column; align-items: stretch; }
  .pager-link { max-width: 100%; }
  .pager-link.pager-next { margin-left: 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .breadcrumb-nav .breadcrumb-item.active { max-width: 140px; }
  .news-card { padding: 20px; }
  .news-card-img { height: 110px; }
}

@media (max-width: 575px) {
  .article-meta-top { gap: 8px; }
  .article-meta-item { font-size: .72rem; }
  .btn-outline-primary { width: 100%; justify-content: center; }
  .back-entry { flex-direction: column; }
}