/* roulang page: index */
/* ============================================================
           开云手机在线登陆入口官方网站 - 设计变量与基础
        ============================================================ */
        :root {
            --primary: #00A693;
            --primary-hover: #008F7E;
            --accent: #FFB454;
            --accent-hover: #FFA733;
            --dark: #10131A;
            --dark-card: #1A1F28;
            --light-bg: #F5F6F8;
            --white: #FFFFFF;
            --text: #1F2329;
            --text-muted: #6B7280;
            --border: #E5E7EB;
            --success: #2FBF71;
            --warning: #E5484D;
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow: 0 2px 8px rgba(16, 19, 26, 0.05);
            --shadow-hover: 0 12px 28px rgba(16, 19, 26, 0.12);
            --transition: all 0.25s ease;
            --font-family: "Alibaba PuHuiTi", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Inter", "Roboto", sans-serif;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--white);
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

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

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

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(0, 166, 147, 0.4);
            outline-offset: 2px;
        }

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

        /* ============================================================
           按钮系统
        ============================================================ */
        .btn {
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: var(--transition);
            border-radius: var(--radius-md);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn.btn-primary {
            background: var(--primary);
            border: 1px solid var(--primary);
            color: #fff;
            padding: 14px 28px;
            border-radius: var(--radius-md);
        }
        .btn.btn-primary:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            transform: translateY(-2px);
            color: #fff;
            box-shadow: 0 6px 16px rgba(0, 166, 147, 0.25);
        }
        .btn.btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
            filter: brightness(0.92);
        }
        .btn.btn-primary:disabled {
            background: #c0c4cc;
            border-color: #c0c4cc;
            transform: none;
            box-shadow: none;
            cursor: not-allowed;
        }

        .btn.btn-cta {
            background: var(--accent);
            border: 1px solid var(--accent);
            color: var(--dark);
            padding: 16px 36px;
            border-radius: 999px;
            font-weight: 800;
            font-size: 17px;
            box-shadow: 0 4px 20px rgba(255, 180, 84, 0.3);
        }
        .btn.btn-cta:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            color: var(--dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 180, 84, 0.4);
        }
        .btn.btn-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(255, 180, 84, 0.25);
        }

        .btn.btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.45);
            color: #fff;
            padding: 14px 32px;
            border-radius: 999px;
        }
        .btn.btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.8);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn.btn-outline-light:active {
            background: rgba(255, 255, 255, 0.18);
            transform: translateY(0);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }

        /* ============================================================
           顶部导航
        ============================================================ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(16, 19, 26, 0.55);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s ease, box-shadow 0.3s ease;
            padding: 12px 0;
        }
        .site-header.scrolled {
            background: var(--dark);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            border-bottom-color: rgba(255, 255, 255, 0.04);
        }

        .header-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: 10px;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(0, 166, 147, 0.3);
        }
        .brand-text {
            font-size: 19px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            scrollbar-width: none;
        }
        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.75);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.04);
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-chip:hover {
            background: rgba(0, 166, 147, 0.25);
            color: #fff;
            border-color: rgba(0, 166, 147, 0.3);
        }
        .nav-chip.active {
            background: var(--accent);
            color: var(--dark);
            border-color: var(--accent);
            font-weight: 700;
        }
        .nav-chip.active:hover {
            background: var(--accent-hover);
            color: var(--dark);
        }

        .header-cta {
            flex-shrink: 0;
        }

        /* 移动端导航 */
        @media (max-width: 991.98px) {
            .header-row {
                flex-wrap: wrap;
                gap: 10px;
                padding-top: 4px;
            }
            .main-nav {
                order: 3;
                width: 100%;
                overflow-x: auto;
                padding-bottom: 4px;
                -webkit-overflow-scrolling: touch;
                gap: 6px;
            }
            .nav-chip {
                padding: 7px 14px;
                font-size: 13px;
            }
            .brand-text {
                font-size: 16px;
            }
        }

        @media (max-width: 575.98px) {
            .brand-text {
                font-size: 14px;
            }
            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .header-cta .btn {
                padding: 9px 16px;
                font-size: 13px;
            }
        }

        /* ============================================================
           Hero 首屏
        ============================================================ */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 140px 0 80px;
            background: url('/assets/images/backpic/back-1.webp') no-repeat center center / cover;
            isolation: isolate;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(16, 19, 26, 0.35) 0%, rgba(16, 19, 26, 0.75) 100%);
            z-index: -1;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 180px;
            background: linear-gradient(180deg, rgba(16, 19, 26, 0) 0%, rgba(16, 19, 26, 0.6) 100%);
            z-index: -1;
        }

        .hero-content {
            max-width: 720px;
            color: #fff;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }
        .hero-badge i {
            color: var(--accent);
        }

        .hero-title {
            font-size: clamp(32px, 6vw, 56px);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
            color: #fff;
        }
        .hero-title .highlight {
            color: var(--accent);
            position: relative;
        }

        .hero-subtitle {
            font-size: 18px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            max-width: 640px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }

        .hero-safety {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 16px;
        }
        .hero-safety i {
            color: var(--accent);
        }

        @media (max-width: 767.98px) {
            .hero-section {
                min-height: 92vh;
                padding: 110px 0 60px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-actions .btn {
                width: 100%;
            }
        }

        /* ============================================================
           通知条
        ============================================================ */
        .notice-bar {
            background: var(--accent);
            color: var(--dark);
            padding: 10px 0;
            font-size: 14px;
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
        }
        .notice-bar .container {
            display: flex;
            align-items: center;
            gap: 10px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .notice-bar i {
            font-size: 15px;
        }
        .notice-bar a {
            font-weight: 700;
            color: var(--dark);
            border-bottom: 1px solid rgba(16, 19, 26, 0.4);
            padding-bottom: 1px;
        }
        .notice-bar a:hover {
            color: #000;
            border-bottom-color: #000;
        }

        @media (max-width: 575.98px) {
            .notice-bar {
                font-size: 13px;
                padding: 8px 0;
            }
        }

        /* ============================================================
           区块通用样式
        ============================================================ */
        .section {
            padding: 96px 0;
        }
        .section-head {
            margin-bottom: 48px;
            max-width: 680px;
        }
        .section-head h2 {
            font-family: var(--font-family);
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--text);
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.8;
        }
        .section-head.light h2 {
            color: #fff;
        }
        .section-head.light p {
            color: rgba(255, 255, 255, 0.65);
        }
        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        @media (max-width: 767.98px) {
            .section {
                padding: 48px 0;
            }
            .section-head {
                margin-bottom: 32px;
            }
        }
        @media (min-width: 768px) and (max-width: 991.98px) {
            .section {
                padding: 72px 0;
            }
        }

        /* ============================================================
           玩法介绍区
        ============================================================ */
        .guide-section {
            background: var(--light-bg);
        }

        .guide-main-card,
        .guide-sub-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 36px;
            height: 100%;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .guide-main-card:hover,
        .guide-sub-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 166, 147, 0.3);
        }

        .guide-main-card {
            background: linear-gradient(135deg, #ffffff 0%, #f0faf8 100%);
            border-left: 4px solid var(--primary);
        }

        .step-number {
            position: absolute;
            top: 24px;
            right: 28px;
            font-size: 48px;
            font-weight: 800;
            color: rgba(0, 166, 147, 0.12);
            line-height: 1;
            font-family: "Inter", "Roboto", var(--font-family);
        }

        .guide-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            background: rgba(0, 166, 147, 0.1);
            border-radius: 14px;
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 20px;
        }

        .guide-main-card h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .guide-sub-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .guide-main-card p,
        .guide-sub-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .link-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--primary);
            font-size: 14px;
            border-bottom: 1px solid transparent;
            padding-bottom: 2px;
        }
        .link-more:hover {
            color: var(--primary-hover);
            border-bottom-color: var(--primary-hover);
        }

        /* ============================================================
           奖励预览区
        ============================================================ */
        .rewards-section {
            background: var(--dark);
            position: relative;
        }
        .rewards-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 80% 20%, rgba(0, 166, 147, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }

        .reward-card {
            background: var(--dark-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .reward-card:hover {
            border-color: var(--accent);
            transform: translateY(-6px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
        }

        .reward-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .reward-card.featured img {
            height: 220px;
        }

        .reward-info {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .reward-tag {
            display: inline-block;
            background: rgba(255, 180, 84, 0.15);
            color: var(--accent);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 14px;
            align-self: flex-start;
        }
        .reward-info h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .reward-info h4 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .reward-info p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .reward-status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            align-self: flex-start;
        }
        .reward-status.active {
            background: rgba(47, 191, 113, 0.15);
            color: var(--success);
        }
        .reward-status.in-progress {
            background: rgba(255, 180, 84, 0.15);
            color: var(--accent);
        }
        .reward-status::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: currentColor;
        }

        /* ============================================================
           任务进度区
        ============================================================ */
        .tasks-section {
            background: var(--white);
        }

        .task-list {
            max-width: 960px;
            margin: 0 auto;
        }

        .task-row {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            margin-bottom: 16px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            flex-wrap: wrap;
        }
        .task-row:hover {
            border-color: rgba(0, 166, 147, 0.3);
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
        }

        .task-info {
            display: flex;
            align-items: center;
            gap: 14px;
            flex: 1;
            min-width: 200px;
        }
        .task-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 166, 147, 0.1);
            color: var(--primary);
            font-size: 18px;
            flex-shrink: 0;
        }
        .task-details h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 2px;
            color: var(--text);
        }
        .task-details p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        .task-progress {
            display: flex;
            align-items: center;
            gap: 12px;
            flex: 1;
            min-width: 160px;
        }
        .progress-track {
            flex: 1;
            height: 8px;
            background: var(--border);
            border-radius: 999px;
            overflow: hidden;
        }
        .progress-fill {
            height: 100%;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--primary), #00c4ad);
            transition: width 0.6s ease;
        }
        .progress-text {
            font-size: 14px;
            font-weight: 700;
            color: var(--text);
            font-family: "Inter", "Roboto", var(--font-family);
        }

        .task-status {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            white-space: nowrap;
        }
        .task-status.in-progress {
            background: rgba(0, 166, 147, 0.1);
            color: var(--primary);
        }
        .task-status.completed {
            background: rgba(47, 191, 113, 0.12);
            color: var(--success);
        }
        .task-status.not-started {
            background: rgba(107, 114, 128, 0.1);
            color: var(--text-muted);
        }
        .task-status::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: currentColor;
            margin-right: 6px;
        }

        .task-action {
            flex-shrink: 0;
        }

        @media (max-width: 767.98px) {
            .task-row {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }
            .task-info {
                min-width: 0;
            }
            .task-progress {
                min-width: 0;
            }
            .task-action {
                text-align: right;
            }
        }

        /* ============================================================
           CTA 区块
        ============================================================ */
        .cta-section {
            background: var(--dark);
            position: relative;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(16, 19, 26, 0.82);
        }

        .cta-box {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
            color: #fff;
        }
        .cta-box h2 {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
        }
        .cta-box p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }
        .cta-safety {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .cta-safety i {
            color: var(--accent);
        }

        @media (max-width: 575.98px) {
            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }
        }

        /* ============================================================
           资讯动态（CMS列表区）
        ============================================================ */
        .news-section {
            background: var(--light-bg);
        }

        .news-card {
            display: block;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 166, 147, 0.3);
        }

        .news-thumb {
            width: 100%;
            height: 160px;
            overflow: hidden;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-thumb img {
            transform: scale(1.05);
        }

        .news-body {
            padding: 20px 24px 24px;
        }
        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 12px;
            gap: 8px;
        }

        .badge-tag {
            display: inline-block;
            background: rgba(0, 166, 147, 0.1);
            color: var(--primary);
            border-radius: 999px;
            padding: 3px 12px;
            font-size: 12px;
            font-weight: 600;
        }
        .news-date {
            font-size: 13px;
            color: var(--text-muted);
            font-family: "Inter", "Roboto", var(--font-family);
        }

        .news-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .news-card:hover .read-more {
            color: var(--primary-hover);
            gap: 10px;
        }

        .empty-state {
            text-align: center;
            padding: 48px 20px;
            font-size: 15px;
            color: var(--text-muted);
            background: var(--white);
            border: 1px dashed var(--border);
            border-radius: var(--radius-lg);
        }

        /* ============================================================
           FAQ 手风琴
        ============================================================ */
        .faq-section {
            background: var(--white);
        }

        .custom-accordion .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            margin-bottom: 14px;
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
        }
        .custom-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: var(--accent);
            box-shadow: 0 4px 16px rgba(255, 180, 84, 0.12);
            border-left: 4px solid var(--accent);
        }

        .custom-accordion .accordion-button {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            background: var(--white);
            padding: 20px 24px;
            border: none;
            box-shadow: none;
            font-family: var(--font-family);
            transition: var(--transition);
        }
        .custom-accordion .accordion-button::after {
            background-image: none;
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: rgba(0, 166, 147, 0.08);
            transition: transform 0.3s ease;
        }
        .custom-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--accent);
            background-color: rgba(255, 180, 84, 0.12);
        }
        .custom-accordion .accordion-button:not(.collapsed) {
            color: var(--text);
            background: #fafcfb;
        }
        .custom-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        .custom-accordion .accordion-body {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            background: #fafcfb;
            border-top: 1px solid rgba(229, 231, 235, 0.4);
        }

        /* ============================================================
           页脚
        ============================================================ */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.65);
            padding: 72px 0 0;
            border-top: 3px solid var(--primary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-brand h3 {
            font-size: 19px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 16px;
            max-width: 280px;
        }
        .footer-brand .brand-mini {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.8);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-col p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.4);
            margin: 0;
        }

        .footer-bottom {
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            margin: 0;
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 16px;
        }
        .footer-bottom .footer-links a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom .footer-links a:hover {
            color: var(--accent);
        }

        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }

        /* ============================================================
           辅助 / 交互动效
        ============================================================ */
        .section {
            position: relative;
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

        /* 滚动入场 */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #00A693;
            --primary-dark: #008F7E;
            --primary-light: rgba(0, 166, 147, 0.12);
            --accent: #FFB454;
            --accent-hover: #FFA733;
            --bg-dark: #10131A;
            --bg-dark-card: #1A1F28;
            --bg-light: #F5F6F8;
            --card-white: #FFFFFF;
            --text-main: #1F2329;
            --text-muted: #6B7280;
            --border-light: #E5E7EB;
            --success: #2FBF71;
            --danger: #E5484D;
            --radius-card: 16px;
            --radius-btn: 12px;
            --shadow-card: 0 2px 8px rgba(16, 19, 26, 0.05);
            --shadow-hover: 0 12px 28px rgba(16, 19, 26, 0.12);
            --transition: 0.25s ease;
        }

        /* ========== 基础 Reset ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: "Alibaba PuHuiTi", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Inter", sans-serif;
            background: var(--bg-light);
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        p {
            margin: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
        }
        button,
        input {
            border: none;
            outline: none;
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
        }

        /* ========== 按钮 ========== */
        .btn {
            font-weight: 700;
            border-radius: var(--radius-btn);
            padding: 14px 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: none;
            transition: all var(--transition);
        }
        .btn:focus-visible {
            outline: 3px solid rgba(0, 166, 147, 0.5);
            outline-offset: 2px;
        }
        .btn-cta {
            background: var(--accent);
            color: var(--bg-dark) !important;
            border-radius: 999px;
            padding: 14px 34px;
            font-weight: 800;
            box-shadow: 0 6px 20px rgba(255, 180, 84, 0.35);
        }
        .btn-cta:hover {
            background: var(--accent-hover);
            color: var(--bg-dark) !important;
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255, 180, 84, 0.45);
        }
        .btn-cta:active {
            transform: translateY(0);
            box-shadow: 0 4px 14px rgba(255, 180, 84, 0.3);
        }
        .btn-sm {
            padding: 8px 22px;
            font-size: 14px;
            border-radius: 999px;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #fff !important;
            border-radius: var(--radius-btn);
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff !important;
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.55);
            color: #fff !important;
            border-radius: var(--radius-btn);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff !important;
            transform: translateY(-2px);
        }

        /* ========== 顶部导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(16, 19, 26, 0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background: var(--bg-dark);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
        }
        .header-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: nowrap;
            min-height: 72px;
            padding: 10px 0;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            white-space: nowrap;
        }
        .brand-logo:hover {
            color: #fff;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), #007a6a);
            border-radius: 10px;
            color: #fff;
            font-size: 15px;
            flex-shrink: 0;
        }
        .brand-text {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0.3px;
        }
        .main-nav {
            display: flex;
            gap: 6px;
            align-items: center;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.75);
            background: rgba(255, 255, 255, 0.06);
            white-space: nowrap;
            transition: all var(--transition);
        }
        .nav-chip:hover {
            color: #fff;
            background: rgba(0, 166, 147, 0.3);
        }
        .nav-chip.active {
            background: var(--accent);
            color: var(--bg-dark);
        }
        .nav-chip.active:hover {
            background: var(--accent);
            color: var(--bg-dark);
        }
        .header-cta {
            flex-shrink: 0;
        }

        /* ========== 分类横幅 ========== */
        .page-banner {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: 150px 0 70px;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 28% 35%, rgba(0, 0, 0, 0.52), rgba(16, 19, 26, 0.88));
        }
        .page-banner-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .page-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(255, 180, 84, 0.15);
            border: 1px solid rgba(255, 180, 84, 0.4);
            color: var(--accent);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .page-banner h1 {
            color: #fff;
            font-size: clamp(32px, 6vw, 56px);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
        }
        .page-banner .banner-desc {
            max-width: 620px;
            color: rgba(255, 255, 255, 0.88);
            font-size: 17px;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }
        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.75);
            transition: color var(--transition);
        }
        .breadcrumb-nav a:hover {
            color: var(--accent);
        }
        .breadcrumb-nav i {
            font-size: 12px;
        }

        /* ========== 信息快讯条 ========== */
        .notice-bar {
            background: var(--bg-dark);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 14px 0;
        }
        .notice-bar .notice-inner {
            display: flex;
            align-items: center;
            gap: 12px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }
        .notice-bar i {
            color: var(--accent);
        }

        /* ========== 通用区块 ========== */
        .section-block {
            padding: 96px 0;
        }
        .section-light {
            background: var(--bg-light);
        }
        .section-white {
            background: #fff;
        }
        .section-dark {
            background: var(--bg-dark);
        }
        .section-head {
            max-width: 760px;
            margin-bottom: 48px;
        }
        .section-head.centered {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 5px 14px;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: clamp(28px, 3.5vw, 38px);
            font-weight: 800;
            margin-bottom: 16px;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
        }

        /* ========== 图文交替 ========== */
        .alternate-block {
            display: flex;
            align-items: center;
        }
        .alternate-media {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            aspect-ratio: 4 / 3;
        }
        .alternate-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .alternate-media:hover img {
            transform: scale(1.03);
        }
        .alternate-content {
            padding-left: 0;
            padding-right: 0;
        }
        .alternate-content h3 {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 14px;
            color: var(--text-main);
        }
        .alternate-content .desc {
            color: var(--text-muted);
            margin-bottom: 22px;
            line-height: 1.85;
        }
        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
            color: var(--text-main);
            font-size: 15px;
        }
        .check-list li i {
            color: var(--primary);
            margin-top: 4px;
        }

        /* ========== 步骤时间线 ========== */
        .timeline-wrap {
            position: relative;
            max-width: 780px;
            margin: 0 auto;
        }
        .timeline-wrap::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 28px;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), rgba(0, 166, 147, 0.15));
        }
        .timeline-item {
            position: relative;
            padding-left: 76px;
            padding-bottom: 42px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-num {
            position: absolute;
            left: 0;
            top: 0;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-dark-card);
            border: 2px solid var(--accent);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            box-shadow: 0 0 0 6px rgba(255, 180, 84, 0.1);
        }
        .timeline-content {
            background: var(--bg-dark-card);
            border-radius: var(--radius-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 22px 26px;
            transition: border-color var(--transition);
        }
        .timeline-content:hover {
            border-color: var(--accent);
        }
        .timeline-content h4 {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .timeline-content p {
            color: rgba(255, 255, 255, 0.68);
            font-size: 15px;
            line-height: 1.75;
        }

        /* ========== 指南推荐卡片 ========== */
        .guide-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            padding: 32px 26px;
            height: 100%;
            transition: all var(--transition);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 166, 147, 0.3);
        }
        .guide-card .card-image {
            height: 170px;
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 20px;
        }
        .guide-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .guide-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 20px;
            margin-bottom: 18px;
        }
        .guide-card h3 {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .guide-card p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .guide-card .card-link {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .guide-card .card-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        /* ========== FAQ 手风琴 ========== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            background: #fff;
            box-shadow: var(--shadow-card);
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: var(--accent);
        }
        .faq-accordion .accordion-button {
            background: #fff;
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            padding: 22px 26px;
            box-shadow: none;
            border: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--text-main);
            background: #fff;
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 4px rgba(0, 166, 147, 0.12);
            border-radius: var(--radius-card);
        }
        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2300A693'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
            transition: transform 0.3s ease;
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }
        .faq-accordion .accordion-body {
            padding: 0 26px 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ========== CTA 区块 ========== */
        .cta-section {
            position: relative;
            background: var(--bg-dark);
            padding: 90px 0;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
        }
        .cta-section h2 {
            color: #fff;
            font-size: clamp(26px, 3.5vw, 36px);
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.68);
            max-width: 600px;
            margin: 0 auto 32px;
            font-size: 16px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            align-items: center;
        }
        .cta-safe-tip {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 13px;
            margin-top: 22px;
        }
        .cta-safe-tip i {
            color: var(--success);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.65);
            padding-top: 64px;
            border-top: 2px solid var(--primary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 44px;
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 18px;
            max-width: 300px;
        }
        .brand-mini {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            font-weight: 700;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: all var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-col p {
            font-size: 14px;
            line-height: 1.75;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 22px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            margin-left: 20px;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .section-block {
                padding: 72px 0;
            }
            .header-row {
                flex-wrap: wrap;
                min-height: auto;
                padding-top: 12px;
                padding-bottom: 0;
            }
            .main-nav {
                order: 3;
                width: 100%;
                overflow-x: auto;
                padding-bottom: 12px;
                justify-content: flex-start;
                scrollbar-width: none;
            }
            .main-nav::-webkit-scrollbar {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .alternate-content {
                margin-top: 28px;
                padding-left: 0;
                padding-right: 0;
            }
            .page-banner {
                min-height: 340px;
                padding: 130px 0 56px;
            }
        }

        @media (max-width: 767.98px) {
            .section-block {
                padding: 56px 0;
            }
            .brand-text {
                font-size: 16px;
                letter-spacing: 0;
            }
            .header-cta .btn-sm {
                padding: 7px 16px;
                font-size: 13px;
            }
            .main-nav {
                gap: 8px;
                margin-top: 6px;
            }
            .nav-chip {
                padding: 7px 14px;
                font-size: 13px;
            }
            .page-banner {
                min-height: 300px;
                padding: 120px 0 48px;
            }
            .page-banner h1 {
                font-size: 30px;
            }
            .page-banner .banner-desc {
                font-size: 15px;
            }
            .timeline-wrap::before {
                left: 22px;
            }
            .timeline-num {
                width: 46px;
                height: 46px;
                font-size: 15px;
            }
            .timeline-item {
                padding-left: 62px;
                padding-bottom: 30px;
            }
            .timeline-content {
                padding: 18px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom a:first-child {
                margin-left: 0;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .section-block {
                padding: 48px 0;
            }
            .header-row {
                align-items: flex-start;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
            }
            .brand-text {
                font-size: 15px;
                max-width: 210px;
                white-space: normal;
                line-height: 1.3;
            }
            .guide-card {
                padding: 24px 20px;
            }
            .faq-accordion .accordion-button {
                font-size: 15px;
                padding: 18px 20px;
            }
            .faq-accordion .accordion-body {
                padding: 0 20px 20px;
            }
            .card-image {
                height: 140px;
            }
        }

/* roulang page: article */
:root {
        --primary: #00A693;
        --primary-dark: #008F7E;
        --accent: #FFB454;
        --accent-hover: #FFA733;
        --dark-bg: #10131A;
        --dark-card: #1A1F28;
        --light-bg: #F5F6F8;
        --white: #FFFFFF;
        --text-main: #1F2329;
        --text-muted: #6B7280;
        --border: #E5E7EB;
        --success: #2FBF71;
        --warning: #E5484D;
        --radius: 16px;
        --radius-btn: 12px;
        --radius-pill: 999px;
        --shadow-sm: 0 2px 8px rgba(16,19,26,0.05);
        --shadow-lg: 0 12px 28px rgba(16,19,26,0.12);
        --transition: all 0.25s ease;
        --font-family: "Alibaba PuHuiTi", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-family);
        background: var(--white);
        color: var(--text-main);
        font-size: 16px;
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
    }

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

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

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

    /* ===== Buttons ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 14px 28px;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 15px;
        line-height: 1;
        text-decoration: none;
        border: none;
        transition: var(--transition);
        cursor: pointer;
        box-shadow: none;
    }

    .btn-primary {
        background: var(--primary);
        color: #fff;
    }

    .btn-primary:hover,
    .btn-primary:focus {
        background: var(--primary-dark);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(0,166,147,0.25);
    }

    .btn-primary.active,
    .btn-primary:active {
        background: var(--primary-dark);
        transform: translateY(0);
        box-shadow: none;
    }

    .btn-cta {
        background: var(--accent);
        color: var(--dark-bg);
        border-radius: var(--radius-pill);
        font-weight: 800;
        padding: 16px 36px;
        box-shadow: 0 6px 20px rgba(255,180,84,0.3);
    }

    .btn-cta:hover,
    .btn-cta:focus {
        background: var(--accent-hover);
        color: var(--dark-bg);
        transform: translateY(-2px);
        box-shadow: 0 10px 28px rgba(255,180,84,0.4);
    }

    .btn-cta.active,
    .btn-cta:active {
        transform: translateY(0);
        box-shadow: 0 4px 14px rgba(255,180,84,0.3);
    }

    .btn-outline-primary {
        background: transparent;
        border: 1px solid var(--primary);
        color: var(--primary);
    }

    .btn-outline-primary:hover {
        background: var(--primary);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 6px 16px rgba(0,166,147,0.18);
    }

    .btn-outline-light {
        background: transparent;
        border: 1px solid rgba(255,255,255,0.35);
        color: #fff;
    }

    .btn-outline-light:hover {
        background: rgba(255,255,255,0.1);
        border-color: #fff;
        color: #fff;
        transform: translateY(-2px);
    }

    .btn-sm {
        padding: 9px 20px;
        font-size: 14px;
        border-radius: 999px;
    }

    /* ===== Header ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: rgba(16,19,26,0.72);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        transition: var(--transition);
        border-bottom: 1px solid rgba(255,255,255,0.06);
    }

    .site-header.scrolled {
        background: var(--dark-bg);
        box-shadow: 0 10px 30px rgba(0,0,0,0.18);
    }

    .header-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        padding: 14px 0;
        gap: 12px;
    }

    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        text-decoration: none;
        color: #fff;
        flex-shrink: 0;
    }

    .brand-logo:hover {
        color: #fff;
        opacity: 0.92;
    }

    .brand-icon {
        width: 42px;
        height: 42px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, var(--primary), #007E6E);
        border-radius: 12px;
        color: #fff;
        font-size: 16px;
        box-shadow: 0 4px 12px rgba(0,166,147,0.25);
    }

    .brand-text {
        font-size: 18px;
        font-weight: 800;
        letter-spacing: 0.5px;
        white-space: nowrap;
    }

    .main-nav {
        display: flex;
        align-items: center;
        gap: 6px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-chip {
        display: inline-flex;
        align-items: center;
        padding: 8px 18px;
        border-radius: 999px;
        font-size: 14px;
        font-weight: 600;
        color: rgba(255,255,255,0.85);
        text-decoration: none;
        background: rgba(255,255,255,0.06);
        transition: var(--transition);
        white-space: nowrap;
        border: none;
    }

    .nav-chip:hover {
        background: rgba(0,166,147,0.28);
        color: #fff;
        transform: translateY(-1px);
    }

    .nav-chip:focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 2px;
    }

    .nav-chip.active {
        background: var(--accent);
        color: var(--dark-bg);
        font-weight: 700;
        box-shadow: 0 4px 14px rgba(255,180,84,0.3);
    }

    .header-cta {
        margin-left: 8px;
        flex-shrink: 0;
    }

    /* ===== Article Header ===== */
    .article-header {
        position: relative;
        padding: 140px 0 56px;
        background: linear-gradient(135deg, rgba(16,19,26,0.88) 0%, rgba(16,19,26,0.6) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
        color: #fff;
    }

    .breadcrumb-nav {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 8px;
        margin-bottom: 24px;
        font-size: 14px;
        color: rgba(255,255,255,0.7);
    }

    .breadcrumb-nav a {
        color: rgba(255,255,255,0.85);
        text-decoration: none;
        transition: color 0.25s;
    }

    .breadcrumb-nav a:hover {
        color: var(--accent);
    }

    .breadcrumb-nav .sep {
        color: rgba(255,255,255,0.4);
    }

    .breadcrumb-nav .current {
        color: var(--accent);
        font-weight: 600;
        text-overflow: ellipsis;
        overflow: hidden;
        white-space: nowrap;
        max-width: 240px;
    }

    .article-header h1 {
        font-size: clamp(32px, 5vw, 48px);
        font-weight: 800;
        line-height: 1.25;
        margin: 0 0 18px;
        max-width: 820px;
    }

    .article-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 18px;
        font-size: 14px;
        color: rgba(255,255,255,0.75);
    }

    .article-meta span {
        display: inline-flex;
        align-items: center;
        gap: 7px;
    }

    .article-meta i {
        color: var(--accent);
    }

    /* ===== Article Content ===== */
    .article-content-section {
        padding: 56px 0 72px;
        background: var(--white);
    }

    .article-wrap {
        max-width: 780px;
        margin: 0 auto;
    }

    .post-content {
        font-size: 16px;
        line-height: 1.9;
        color: var(--text-main);
        word-wrap: break-word;
    }

    .post-content p {
        margin-bottom: 28px;
    }

    .post-content h2,
    .post-content h3,
    .post-content h4 {
        color: var(--text-main);
        font-weight: 700;
        line-height: 1.35;
        margin-top: 40px;
        margin-bottom: 14px;
    }

    .post-content h2 {
        font-size: 24px;
        padding-bottom: 10px;
        border-bottom: 2px solid var(--light-bg);
    }

    .post-content h3 {
        font-size: 20px;
    }

    .post-content h4 {
        font-size: 18px;
    }

    .post-content a {
        color: var(--primary);
        text-decoration: none;
        border-bottom: 1px solid transparent;
        transition: var(--transition);
    }

    .post-content a:hover {
        border-bottom-color: var(--primary);
    }

    .post-content ul,
    .post-content ol {
        margin: 16px 0 28px;
        padding-left: 26px;
    }

    .post-content li {
        margin-bottom: 8px;
    }

    .post-content img {
        max-width: 100%;
        border-radius: var(--radius);
        margin: 24px 0;
    }

    .post-content blockquote {
        background: var(--light-bg);
        border-left: 4px solid var(--primary);
        border-radius: 0 12px 12px 0;
        padding: 20px 24px;
        margin: 24px 0;
        color: var(--text-muted);
        font-style: italic;
    }

    .post-content blockquote p:last-child {
        margin-bottom: 0;
    }

    .post-content table {
        width: 100%;
        border-collapse: collapse;
        margin: 24px 0;
        font-size: 15px;
    }

    .post-content table th,
    .post-content table td {
        border: 1px solid var(--border);
        padding: 10px 14px;
        text-align: left;
    }

    .post-content table th {
        background: var(--light-bg);
        font-weight: 700;
    }

    .post-content code {
        background: var(--light-bg);
        border-radius: 6px;
        padding: 2px 8px;
        font-size: 14px;
        color: var(--primary-dark);
        font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    }

    .post-content pre {
        background: var(--dark-bg);
        color: #e5e7eb;
        border-radius: var(--radius);
        padding: 20px;
        overflow-x: auto;
        margin: 24px 0;
    }

    .post-content pre code {
        background: transparent;
        color: inherit;
        padding: 0;
    }

    /* ===== Tags ===== */
    .post-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 44px;
        padding-top: 24px;
        border-top: 1px solid var(--border);
    }

    .post-tags .tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 7px 16px;
        border-radius: 999px;
        background: var(--light-bg);
        color: var(--text-muted);
        font-size: 13px;
        font-weight: 500;
        text-decoration: none;
        transition: var(--transition);
    }

    .post-tags .tag:hover {
        background: var(--primary);
        color: #fff;
    }

    .post-tags .tag i {
        font-size: 12px;
    }

    /* ===== Post Nav ===== */
    .post-nav {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        gap: 14px;
        margin-top: 40px;
        padding-top: 28px;
        border-top: 1px solid var(--border);
    }

    .post-nav .btn {
        flex: 1;
        min-width: 140px;
        max-width: 220px;
    }

    /* ===== Related ===== */
    .related-section {
        padding: 72px 0;
        background: var(--light-bg);
    }

    .related-section h2 {
        text-align: center;
        font-size: clamp(24px, 3vw, 32px);
        font-weight: 700;
        color: var(--text-main);
        margin-bottom: 8px;
    }

    .related-section .section-sub {
        text-align: center;
        color: var(--text-muted);
        font-size: 15px;
        margin-bottom: 44px;
    }

    .related-card {
        background: var(--white);
        border-radius: var(--radius);
        overflow: hidden;
        border: 1px solid var(--border);
        transition: var(--transition);
        text-decoration: none;
        color: inherit;
        display: block;
        height: 100%;
    }

    .related-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-lg);
        border-color: rgba(0,166,147,0.3);
        color: inherit;
    }

    .related-card .card-img {
        height: 170px;
        overflow: hidden;
        background: var(--dark-bg);
    }

    .related-card .card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }

    .related-card:hover .card-img img {
        transform: scale(1.05);
    }

    .related-card .card-body {
        padding: 22px 24px 26px;
    }

    .related-card .card-tag {
        display: inline-block;
        font-size: 13px;
        color: var(--primary);
        font-weight: 700;
        margin-bottom: 8px;
    }

    .related-card h3 {
        font-size: 17px;
        font-weight: 700;
        line-height: 1.45;
        color: var(--text-main);
        margin-bottom: 10px;
    }

    .related-card p {
        font-size: 14px;
        color: var(--text-muted);
        margin: 0;
        line-height: 1.7;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .related-card .card-link {
        margin-top: 16px;
        font-size: 14px;
        font-weight: 600;
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .related-card .card-link i {
        transition: transform 0.25s;
    }

    .related-card:hover .card-link i {
        transform: translateX(4px);
    }

    /* ===== CTA Section ===== */
    .cta-section {
        padding: 80px 0;
        background: var(--dark-bg);
        color: #fff;
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    .cta-section h2 {
        font-size: clamp(24px, 3vw, 36px);
        font-weight: 700;
        margin-bottom: 14px;
    }

    .cta-section p {
        color: rgba(255,255,255,0.75);
        font-size: 16px;
        max-width: 620px;
        margin: 0 auto 36px;
        line-height: 1.8;
    }

    .cta-buttons {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
        margin-bottom: 40px;
    }

    .cta-badges {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 22px;
        font-size: 13px;
        color: rgba(255,255,255,0.5);
    }

    .cta-badges span {
        display: inline-flex;
        align-items: center;
        gap: 8px;
    }

    .cta-badges i {
        color: var(--accent);
    }

    /* ===== Not Found ===== */
    .not-found-section {
        min-height: 60vh;
        display: flex;
        align-items: center;
        padding: 140px 20px 80px;
        background: var(--light-bg);
    }

    .not-found-card {
        max-width: 500px;
        margin: 0 auto;
        text-align: center;
        padding: 48px 44px;
        background: var(--white);
        border-radius: 24px;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border);
    }

    .not-found-card i {
        font-size: 44px;
        color: var(--primary);
        margin-bottom: 18px;
    }

    .not-found-card h1 {
        font-size: 30px;
        font-weight: 800;
        margin-bottom: 12px;
    }

    .not-found-card p {
        color: var(--text-muted);
        margin-bottom: 30px;
        font-size: 15px;
        line-height: 1.8;
    }

    .not-found-card .btn {
        min-width: 180px;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--dark-bg);
        color: rgba(255,255,255,0.75);
        padding: 64px 0 0;
        border-top: 2px solid var(--primary);
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
        gap: 44px;
        padding-bottom: 48px;
    }

    .footer-brand h3 {
        color: #fff;
        font-size: 20px;
        font-weight: 800;
        margin-bottom: 14px;
    }

    .footer-brand p {
        font-size: 14px;
        line-height: 1.8;
        margin: 0 0 22px;
        color: rgba(255,255,255,0.6);
    }

    .brand-mini {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        font-weight: 600;
        color: rgba(255,255,255,0.85);
    }

    .footer-col h4 {
        color: #fff;
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 18px;
    }

    .footer-col ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .footer-col ul li {
        margin-bottom: 10px;
    }

    .footer-col ul a {
        color: rgba(255,255,255,0.65);
        font-size: 14px;
        text-decoration: none;
        transition: var(--transition);
    }

    .footer-col ul a:hover {
        color: var(--accent);
        padding-left: 4px;
    }

    .footer-col p {
        font-size: 14px;
        line-height: 1.8;
        color: rgba(255,255,255,0.6);
        margin: 0;
    }

    .footer-bottom {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        padding: 22px 0;
        border-top: 1px solid rgba(255,255,255,0.08);
        font-size: 13px;
        color: rgba(255,255,255,0.45);
    }

    .footer-bottom p {
        margin: 0;
    }

    .footer-links {
        display: flex;
        gap: 16px;
    }

    .footer-links a {
        color: rgba(255,255,255,0.55);
        text-decoration: none;
        font-size: 13px;
    }

    .footer-links a:hover {
        color: var(--accent);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .header-row {
            padding: 12px 0;
        }
        .main-nav {
            gap: 4px;
        }
        .nav-chip {
            padding: 7px 14px;
            font-size: 13px;
        }
    }

    @media (max-width: 991px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 36px;
        }
        .article-header {
            padding-top: 130px;
        }
    }

    @media (max-width: 768px) {
        .header-row {
            flex-direction: column;
            align-items: stretch;
        }
        .brand-logo {
            justify-content: center;
        }
        .main-nav {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            flex-wrap: nowrap;
            justify-content: flex-start;
            padding-bottom: 4px;
            scrollbar-width: none;
        }
        .main-nav::-webkit-scrollbar {
            display: none;
        }
        .nav-chip {
            flex-shrink: 0;
        }
        .header-cta {
            position: absolute;
            top: 14px;
            right: 16px;
        }
        .header-row {
            position: relative;
            padding-top: 70px;
        }
        .article-header {
            padding: 150px 0 48px;
        }
        .article-header h1 {
            font-size: 30px;
        }
        .article-content-section {
            padding: 44px 0 56px;
        }
        .article-wrap {
            max-width: 100%;
        }
        .post-nav {
            flex-direction: column;
        }
        .post-nav .btn {
            max-width: 100%;
            width: 100%;
        }
        .related-section {
            padding: 56px 0;
        }
        .cta-section {
            padding: 60px 0;
        }
        .cta-badges {
            flex-direction: column;
            gap: 12px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 32px;
            padding-bottom: 36px;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
        .not-found-card {
            padding: 40px 28px;
        }
    }

    @media (max-width: 520px) {
        .brand-text {
            font-size: 16px;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            font-size: 14px;
        }
        .article-header h1 {
            font-size: 26px;
        }
        .article-meta {
            gap: 12px;
            font-size: 13px;
        }
        .post-content {
            font-size: 15px;
        }
        .post-content h2 {
            font-size: 21px;
        }
        .related-card .card-body {
            padding: 18px 18px 22px;
        }
        .cta-buttons {
            flex-direction: column;
            align-items: stretch;
        }
        .cta-buttons .btn {
            width: 100%;
        }
        .footer-bottom {
            padding: 18px 0;
        }
    }

    @media (min-width: 992px) {
        .article-wrap {
            padding: 0 20px;
        }
    }

/* roulang page: category3 */
:root {
            --primary: #00A693;
            --primary-hover: #008F7E;
            --accent: #FFB454;
            --accent-hover: #FFA733;
            --dark: #10131A;
            --dark-card: #1A1F28;
            --light: #F5F6F8;
            --white: #FFFFFF;
            --text: #1F2329;
            --text-secondary: #6B7280;
            --border: #E5E7EB;
            --success: #2FBF71;
            --warning: #E5484D;
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 2px 8px rgba(16, 19, 26, 0.05);
            --shadow-hover: 0 12px 28px rgba(16, 19, 26, 0.12);
            --transition: 0.25s ease;
            --font-sans: "Alibaba PuHuiTi", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--white);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

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

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

        /* ===== Buttons ===== */
        .btn {
            border-radius: var(--radius-btn);
            font-weight: 600;
            padding: 14px 28px;
            font-size: 16px;
            border: none;
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            line-height: 1.4;
        }

        .btn-cta {
            background: var(--accent);
            color: var(--dark);
            border-radius: var(--radius-pill);
            font-weight: 800;
            padding: 16px 36px;
            box-shadow: 0 6px 24px rgba(255, 180, 84, 0.35);
        }

        .btn-cta:hover {
            background: var(--accent-hover);
            color: var(--dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(255, 180, 84, 0.45);
        }

        .btn-cta:active {
            transform: translateY(0);
            box-shadow: 0 4px 16px rgba(255, 180, 84, 0.3);
        }

        .btn-primary {
            background: var(--primary);
            color: var(--white);
            padding: 14px 28px;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            color: var(--white);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: var(--white);
            border-radius: var(--radius-pill);
            padding: 14px 32px;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--white);
            border-color: rgba(255, 255, 255, 0.8);
        }

        .btn-sm {
            padding: 10px 22px;
            font-size: 14px;
        }

        .btn:focus,
        .btn-cta:focus,
        .btn-primary:focus,
        .btn-outline-light:focus {
            outline: 3px solid rgba(0, 166, 147, 0.3);
            outline-offset: 2px;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(16, 19, 26, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background: var(--dark);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }

        .header-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
            min-height: 72px;
            padding: 12px 0;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), #007A6B);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 18px;
            flex-shrink: 0;
        }

        .brand-text {
            color: var(--white);
            font-weight: 800;
            font-size: 18px;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 6px 4px;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            border: 1px solid transparent;
            transition: all 0.25s ease;
        }

        .nav-chip:hover {
            background: rgba(0, 166, 147, 0.25);
            color: var(--white);
            text-decoration: none;
        }

        .nav-chip.active {
            background: var(--accent);
            color: var(--dark);
            font-weight: 700;
            border-color: var(--accent);
        }

        .header-cta {
            flex-shrink: 0;
            margin-left: 12px;
        }

        /* ===== Page Hero / Banner ===== */
        .page-hero {
            position: relative;
            min-height: 320px;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            display: flex;
            align-items: center;
            margin-top: 72px;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(16, 19, 26, 0.35), rgba(16, 19, 26, 0.75) 70%);
            z-index: 1;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
            padding-top: 60px;
            padding-bottom: 60px;
        }

        .page-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            margin-bottom: 16px;
        }

        .page-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color 0.2s;
        }

        .page-breadcrumb a:hover {
            color: var(--accent);
        }

        .page-breadcrumb .sep {
            opacity: 0.5;
        }

        .page-hero h1 {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 800;
            color: var(--white);
            line-height: 1.25;
            margin: 0 0 14px;
            letter-spacing: 1px;
        }

        .page-hero .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .page-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-pill);
            color: rgba(255, 255, 255, 0.9);
            padding: 5px 14px;
            font-size: 13px;
        }

        /* ===== Sections ===== */
        .page-section {
            padding: 80px 0;
        }

        .section-light {
            background: var(--light);
        }

        .section-white {
            background: var(--white);
        }

        .section-dark {
            background: var(--dark);
        }

        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-head .eyebrow {
            display: inline-block;
            background: rgba(0, 166, 147, 0.1);
            color: var(--primary);
            border-radius: var(--radius-pill);
            padding: 4px 16px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .section-head h2 {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            margin: 0 0 14px;
        }

        .section-head p {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-head.light h2 {
            color: var(--white);
        }

        .section-head.light p {
            color: rgba(255, 255, 255, 0.6);
        }

        .section-head.light .eyebrow {
            background: rgba(255, 180, 84, 0.15);
            color: var(--accent);
        }

        /* ===== Member Level Cards ===== */
        .level-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 36px 30px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .level-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(to right, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity 0.25s;
        }

        .level-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 166, 147, 0.3);
        }

        .level-card:hover::before {
            opacity: 1;
        }

        .level-icon {
            width: 68px;
            height: 68px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            margin: 0 auto 20px;
            background: rgba(0, 166, 147, 0.1);
            color: var(--primary);
        }

        .level-card.featured .level-icon {
            background: rgba(255, 180, 84, 0.15);
            color: var(--accent);
        }

        .level-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .level-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .level-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
        }

        .level-tags span {
            background: var(--light);
            border-radius: var(--radius-pill);
            padding: 4px 12px;
            font-size: 12px;
            color: var(--text-secondary);
            border: 1px solid var(--border);
        }

        /* ===== Rules Section ===== */
        .rules-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .rules-image {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
        }

        .rules-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .rules-image .img-badge {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(16, 19, 26, 0.85);
            color: var(--accent);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            align-items: center;
            gap: 6px;
            display: flex;
        }

        .rules-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .rules-list li {
            display: flex;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
        }

        .rules-list li:last-child {
            border-bottom: none;
        }

        .rule-num {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(0, 166, 147, 0.1);
            color: var(--primary);
            font-weight: 700;
            font-size: 17px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(0, 166, 147, 0.15);
        }

        .rule-content h4 {
            font-size: 17px;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--text);
        }

        .rule-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== Rewards Grid ===== */
        .reward-card {
            background: var(--dark-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 0;
            overflow: hidden;
            transition: all 0.25s ease;
            height: 100%;
        }

        .reward-card:hover {
            border-color: var(--accent);
            transform: translateY(-4px);
        }

        .reward-card.featured {
            background: linear-gradient(135deg, #1A1F28 0%, #232A37 100%);
        }

        .reward-img {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

        .reward-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .reward-card:hover .reward-img img {
            transform: scale(1.05);
        }

        .reward-tag {
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--accent);
            color: var(--dark);
            border-radius: var(--radius-pill);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 700;
        }

        .reward-body {
            padding: 22px 22px 26px;
        }

        .reward-body h3 {
            color: var(--white);
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .reward-body p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .reward-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            flex-wrap: wrap;
        }

        .reward-meta .value {
            color: var(--accent);
            font-weight: 600;
        }

        .reward-meta .status {
            color: var(--success);
            font-weight: 500;
        }

        /* ===== Alert Box ===== */
        .alert-box {
            background: linear-gradient(135deg, #1A1F28, #202633);
            border: 1px solid rgba(229, 72, 77, 0.2);
            border-left: 4px solid var(--warning);
            border-radius: var(--radius-card);
            padding: 36px 36px;
            display: flex;
            gap: 24px;
            align-items: flex-start;
        }

        .alert-box .alert-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(229, 72, 77, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--warning);
            flex-shrink: 0;
        }

        .alert-box h3 {
            color: var(--white);
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .alert-box p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .alert-box p a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.25s, box-shadow 0.25s;
        }

        .faq-item.expanded {
            border-color: var(--accent);
            box-shadow: var(--shadow-card);
        }

        .faq-item[aria-expanded="true"] {
            border-color: var(--accent);
        }

        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 20px 24px;
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            text-align: left;
            cursor: pointer;
            border-radius: var(--radius-card);
            transition: background 0.2s;
        }

        .faq-question:hover {
            background: rgba(0, 166, 147, 0.04);
        }

        .faq-question:focus {
            outline: 3px solid rgba(0, 166, 147, 0.25);
            outline-offset: -2px;
        }

        .faq-question .faq-icon {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: var(--light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-secondary);
            flex-shrink: 0;
            transition: all 0.3s ease;
        }

        .faq-item[aria-expanded="true"] .faq-icon {
            background: var(--accent);
            color: var(--dark);
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            border-top: 1px solid var(--border);
            margin-top: 0;
            padding-top: 16px;
        }

        .faq-answer p {
            margin: 0;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            position: relative;
            padding: 90px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(16, 19, 26, 0.85);
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            color: var(--white);
            font-size: clamp(26px, 4vw, 40px);
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 30px;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .cta-safe-tip {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 13px;
        }

        .cta-safe-tip i {
            color: var(--success);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            border-top: 4px solid var(--primary);
            padding: 60px 0 0;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand h3 {
            color: var(--white);
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 18px;
        }

        .brand-mini {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--white);
            font-weight: 700;
        }

        .footer-col h4 {
            color: var(--white);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: color 0.2s;
        }

        .footer-col ul li a:hover {
            color: var(--accent);
        }

        .footer-col p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
            line-height: 1.8;
            margin: 0;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 0;
        }

        .footer-bottom p {
            color: rgba(255, 255, 255, 0.4);
            font-size: 13px;
            margin: 0;
        }

        .footer-links {
            display: flex;
            gap: 16px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.4);
            font-size: 13px;
        }

        .footer-links a:hover {
            color: var(--accent);
        }

        /* ===== Scroll Spacer ===== */
        body {
            padding-top: 72px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .header-row {
                flex-wrap: wrap;
                padding: 10px 0;
            }

            .brand-logo {
                width: auto;
            }

            .main-nav {
                order: 3;
                width: 100%;
                margin-top: 8px;
                justify-content: flex-start;
                padding-bottom: 4px;
            }

            .header-cta {
                margin-left: auto;
            }

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

            .rules-layout {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .rules-image img {
                height: 300px;
            }
        }

        @media (max-width: 767.98px) {
            body {
                padding-top: 64px;
            }

            .page-section {
                padding: 56px 0;
            }

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

            .page-hero {
                min-height: 280px;
            }

            .page-hero .container {
                padding-top: 48px;
                padding-bottom: 48px;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .page-hero .hero-desc {
                font-size: 15px;
            }

            .level-card {
                padding: 28px 20px;
            }

            .alert-box {
                padding: 24px 20px;
                flex-direction: column;
            }

            .cta-section {
                padding: 60px 0;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }

            .cta-buttons .btn {
                width: 100%;
                max-width: 280px;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .brand-text {
                font-size: 15px;
            }

            .brand-icon {
                width: 36px;
                height: 36px;
            }

            .header-cta .btn {
                padding: 8px 16px;
                font-size: 13px;
            }

            .page-hero h1 {
                font-size: 24px;
            }

            .page-breadcrumb {
                font-size: 13px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

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

            .footer-links {
                justify-content: center;
            }

            .rules-image img {
                height: 220px;
            }

            .reward-img {
                height: 160px;
            }

            .reward-body {
                padding: 18px 16px 22px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #00A693;
            --primary-dark: #008F7E;
            --gold: #FFB454;
            --gold-dark: #FFA733;
            --ink: #10131A;
            --ink-card: #1A1F28;
            --bg-light: #F5F6F8;
            --card-white: #FFFFFF;
            --text-main: #1F2329;
            --text-muted: #6B7280;
            --border: #E5E7EB;
            --success: #2FBF71;
            --danger: #E5484D;
            --radius: 16px;
            --radius-sm: 12px;
            --shadow: 0 2px 8px rgba(16,19,26,0.05);
            --shadow-hover: 0 12px 28px rgba(16,19,26,0.12);
            --font: "Alibaba PuHuiTi", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: #fff;
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.8;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }

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

        ul,
        ol {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
        }

        .section {
            padding: 96px 0;
        }

        .section-light {
            background: var(--bg-light);
        }

        .section-white {
            background: #fff;
        }

        .section-dark {
            background: var(--ink);
            color: #fff;
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-header h2 {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            letter-spacing: -0.01em;
        }

        .section-dark .section-header h2 {
            color: #fff;
        }

        .section-header p {
            color: var(--text-muted);
            margin-top: 12px;
            font-size: 16px;
        }

        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.6);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(0, 166, 147, 0.1);
            color: var(--primary-dark);
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .section-dark .section-label {
            background: rgba(255, 180, 84, 0.15);
            color: var(--gold);
        }

        .section-label .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
        }

        .section-dark .section-label .dot {
            background: var(--gold);
        }

        /* Buttons */
        .btn {
            border-radius: 12px;
            font-weight: 600;
            transition: all .25s ease;
            border: none;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            padding: 14px 28px;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 166, 147, 0.25);
        }

        .btn-cta {
            background: var(--gold);
            color: var(--ink);
            padding: 16px 36px;
            border-radius: 999px;
            font-weight: 800;
            box-shadow: 0 8px 24px rgba(255, 180, 84, 0.25);
        }

        .btn-cta:hover {
            background: #FFC877;
            color: var(--ink);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(255, 180, 84, 0.35);
        }

        .btn-sm {
            padding: 10px 22px;
            font-size: 14px;
        }

        .btn-outline-light {
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            background: transparent;
            border-radius: 999px;
            padding: 14px 32px;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }

        .btn:focus-visible,
        .nav-chip:focus-visible,
        .faq-question:focus-visible {
            outline: 3px solid rgba(0, 166, 147, 0.35);
            outline-offset: 2px;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(16, 19, 26, 0.55);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: background .3s ease, box-shadow .3s ease;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .site-header.scrolled {
            background: var(--ink);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
        }

        .header-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 24px;
            flex-wrap: wrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            min-width: 0;
        }

        .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), #007a6b);
            border-radius: 12px;
            color: #fff;
            font-size: 18px;
            flex: 0 0 auto;
        }

        .brand-text {
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            white-space: nowrap;
            letter-spacing: -0.01em;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            padding: 8px 18px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all .25s ease;
        }

        .nav-chip:hover {
            background: rgba(0, 166, 147, 0.3);
            color: #fff;
            border-color: rgba(0, 166, 147, 0.6);
        }

        .nav-chip.active {
            background: var(--gold);
            color: var(--ink);
            border-color: var(--gold);
        }

        .header-cta {
            flex: 0 0 auto;
        }

        /* Page banner */
        .page-banner {
            position: relative;
            padding: 190px 0 100px;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            color: #fff;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(16, 19, 26, 0.85) 0%, rgba(16, 19, 26, 0.55) 55%, rgba(16, 19, 26, 0.25) 100%), radial-gradient(circle at 20% 30%, rgba(0, 166, 147, 0.22), transparent 45%);
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 999px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.75);
        }

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

        .breadcrumb-custom i {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.4);
        }

        .page-banner h1 {
            font-size: clamp(32px, 6vw, 56px);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }

        .page-banner .lead {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 660px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .banner-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .banner-badges .badge {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.14);
            padding: 8px 18px;
            border-radius: 999px;
            font-weight: 500;
            font-size: 14px;
        }

        /* Generic card */
        .card {
            border-radius: var(--radius);
            border: 1px solid var(--border);
            background: var(--card-white);
            box-shadow: var(--shadow);
            transition: transform .25s ease, box-shadow .25s ease;
            overflow: hidden;
        }

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

        .card-img-top {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .card-body {
            padding: 24px;
        }

        .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .card-body p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Feature 1+2 grid */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }

        .feature-main {
            grid-column: span 6;
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            min-height: 420px;
        }

        .feature-main img {
            width: 100%;
            height: 100%;
            min-height: 420px;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .feature-main:hover img {
            transform: scale(1.03);
        }

        .feature-main-content {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            padding: 36px;
            background: linear-gradient(transparent, rgba(16, 19, 26, 0.88));
            color: #fff;
        }

        .feature-main-content h3 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .feature-main-content p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            margin: 0;
            line-height: 1.7;
        }

        .feature-sides {
            grid-column: span 6;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .feature-side-card {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
            transition: all .25s ease;
            flex: 1;
        }

        .feature-side-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 166, 147, 0.3);
        }

        .feature-side-icon {
            flex: 0 0 auto;
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(0, 166, 147, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 24px;
        }

        .feature-side-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .feature-side-card p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* Activity type cards */
        .activity-card {
            background: var(--ink-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all .25s ease;
            height: 100%;
        }

        .activity-card:hover {
            border-color: var(--gold);
            transform: translateY(-6px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
        }

        .activity-card img {
            width: 100%;
            height: 170px;
            object-fit: cover;
        }

        .activity-card-body {
            padding: 24px;
        }

        .card-tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(255, 180, 84, 0.15);
            color: var(--gold);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .activity-card-body h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .activity-card-body p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }

        /* Workflow timeline */
        .flow-wrap {
            max-width: 920px;
            margin: 0 auto;
            padding: 0 12px;
        }

        .flow-item {
            display: flex;
            gap: 28px;
            position: relative;
            padding-bottom: 44px;
        }

        .flow-item:last-child {
            padding-bottom: 0;
        }

        .flow-item::before {
            content: '';
            position: absolute;
            left: 30px;
            top: 64px;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), rgba(0, 166, 147, 0.1));
        }

        .flow-item:last-child::before {
            display: none;
        }

        .flow-num {
            flex: 0 0 auto;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 0 6px rgba(0, 166, 147, 0.15);
            z-index: 1;
        }

        .flow-content {
            flex: 1;
            padding-top: 6px;
        }

        .flow-content h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .flow-content p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 600px;
            margin: 0;
            line-height: 1.7;
        }

        /* Task rows */
        .task-wrap {
            max-width: 960px;
            margin: 0 auto;
        }

        .task-row {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--ink-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            padding: 20px 24px;
            margin-bottom: 16px;
            transition: border-color .25s ease;
        }

        .task-row:hover {
            border-color: rgba(255, 180, 84, 0.35);
        }

        .task-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex: 0 0 auto;
        }

        .task-icon.pending {
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.5);
        }

        .task-icon.active-task {
            background: rgba(0, 166, 147, 0.15);
            color: var(--primary);
        }

        .task-icon.done {
            background: rgba(47, 191, 113, 0.15);
            color: var(--success);
        }

        .task-info {
            flex: 1;
            min-width: 0;
        }

        .task-name {
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 8px;
        }

        .task-desc {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            margin: 0 0 12px;
            line-height: 1.6;
        }

        .progress-track {
            height: 8px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 999px;
            overflow: hidden;
        }

        .progress-fill {
            height: 100%;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--primary), #00c4ad);
            transition: width .4s ease;
        }

        .progress-fill.gold {
            background: linear-gradient(90deg, var(--gold), #FFD89A);
        }

        .task-meta {
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 8px;
            flex: 0 0 auto;
        }

        .task-percent {
            color: var(--gold);
            font-weight: 800;
            font-size: 18px;
        }

        .badge {
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
        }

        .badge-pending {
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.6);
        }

        .badge-progress {
            background: rgba(0, 166, 147, 0.15);
            color: #3fd0bd;
        }

        .badge-done {
            background: rgba(47, 191, 113, 0.15);
            color: #5ae09b;
        }

        /* Notice / warning */
        .notice-wrap {
            max-width: 920px;
            margin: 0 auto;
        }

        .alert-box {
            display: flex;
            gap: 24px;
            background: #fff;
            border: 1px solid #ffe0c2;
            border-left: 4px solid var(--gold);
            border-radius: var(--radius);
            padding: 36px;
            box-shadow: var(--shadow);
        }

        .alert-icon {
            flex: 0 0 auto;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(255, 180, 84, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gold-dark);
            font-size: 24px;
        }

        .alert-box h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .alert-box ul {
            padding: 0;
            margin: 0;
        }

        .alert-box li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 10px;
            color: var(--text-muted);
            font-size: 15px;
        }

        .alert-box li::before {
            content: '\f14a';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 2px;
            color: var(--gold-dark);
            font-size: 13px;
        }

        /* FAQ */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .accordion-item.faq-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            box-shadow: 0 1px 4px rgba(16, 19, 26, 0.03);
            overflow: hidden;
            transition: border-color .25s ease, box-shadow .25s ease;
        }

        .accordion-item.faq-card:has(.show) {
            border-color: var(--gold);
            box-shadow: var(--shadow);
        }

        .accordion-button.faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            background: transparent;
            border: none;
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            text-align: left;
            gap: 16px;
            transition: color .2s ease;
        }

        .accordion-button.faq-question:hover {
            color: var(--primary-dark);
        }

        .accordion-button.faq-question:focus {
            box-shadow: none;
            outline: 3px solid rgba(0, 166, 147, 0.2);
        }

        .accordion-button.faq-question::after {
            display: none;
        }

        .accordion-button.faq-question .fa-chevron-down {
            transition: transform .3s ease;
            color: var(--text-muted);
            font-size: 14px;
            flex: 0 0 auto;
        }

        .accordion-item.faq-card:has(.show) .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .accordion-body.faq-answer {
            padding: 0 24px 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        /* CTA */
        .cta-section {
            position: relative;
            background: var(--ink) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            color: #fff;
            text-align: center;
            padding: 110px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(16, 19, 26, 0.92), rgba(16, 19, 26, 0.78));
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 36px;
            font-size: 17px;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-safe {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.45);
            font-size: 13px;
            margin-top: 28px;
        }

        /* Footer */
        .site-footer {
            background: var(--ink);
            color: rgba(255, 255, 255, 0.7);
            border-top: 2px solid var(--primary);
            padding-top: 64px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 16px;
            color: rgba(255, 255, 255, 0.6);
        }

        .brand-mini {
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 10px 16px;
            border-radius: 12px;
            width: fit-content;
        }

        .brand-mini span {
            color: #fff;
            font-weight: 700;
            font-size: 14px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-col li {
            margin-bottom: 12px;
        }

        .footer-col a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 15px;
            transition: color .2s ease;
        }

        .footer-col a:hover {
            color: var(--gold);
        }

        .footer-col p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            margin: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .footer-bottom p {
            margin: 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-links {
            display: flex;
            gap: 16px;
        }

        .footer-links a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            transition: color .2s;
        }

        .footer-links a:hover {
            color: var(--gold);
        }

        /* Responsive */
        @media (max-width: 992px) {
            .header-row {
                gap: 12px;
            }

            .main-nav {
                order: 3;
                width: 100%;
                padding-bottom: 12px;
            }

            .brand-text {
                font-size: 16px;
            }

            .feature-main {
                grid-column: span 12;
            }

            .feature-main img,
            .feature-main {
                min-height: 300px;
            }

            .feature-sides {
                grid-column: span 12;
            }

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

            .section {
                padding: 72px 0;
            }
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 160px 0 72px;
            }

            .page-banner h1 {
                font-size: 36px;
            }

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

            .task-row {
                flex-wrap: wrap;
                gap: 12px;
            }

            .task-meta {
                flex-direction: row;
                align-items: center;
                justify-content: space-between;
                width: 100%;
            }

            .alert-box {
                flex-direction: column;
                padding: 24px;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }

            .flow-item {
                gap: 16px;
            }

            .flow-item::before {
                left: 24px;
            }

            .flow-num {
                width: 50px;
                height: 50px;
            }

            .section {
                padding: 48px 0;
            }

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

            .feature-side-card {
                flex-direction: column;
                gap: 12px;
            }
        }

        @media (max-width: 520px) {
            .brand-text {
                font-size: 15px;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
            }

            .header-cta .btn-cta {
                padding: 8px 16px;
                font-size: 13px;
            }

            .nav-chip {
                padding: 7px 14px;
                font-size: 13px;
            }

            .page-banner .lead {
                font-size: 16px;
            }

            .banner-badges .badge {
                font-size: 12px;
                padding: 6px 12px;
            }

            .cta-safe {
                flex-direction: column;
            }

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

            .footer-links {
                justify-content: center;
            }
        }