/* roulang page: index */
:root {
            --primary: #123E3A;
            --primary-dark: #0E302D;
            --primary-deeper: #0A2420;
            --accent: #C99A47;
            --accent-light: #E8C988;
            --bg: #F6F5F1;
            --bg-white: #FFFFFF;
            --text: #1B2926;
            --text-secondary: #5F6C69;
            --border: #D8E0DD;
            --warning: #B34A2E;
            --success: #2E7D5B;
            --shadow-sm: 0 4px 18px rgba(18,62,58,0.06);
            --shadow-md: 0 12px 28px rgba(18,62,58,0.12);
            --shadow-lg: 0 20px 45px rgba(18,62,58,0.15);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-img: 12px;
            --transition: 0.2s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-mono: "Roboto Mono", "SFMono-Regular", monospace;
            --container: 1200px;
            --nav-height: 68px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 40px;
        }

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

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

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        button {
            cursor: pointer;
            background: none;
            border: none;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(246,245,241,0.96);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            line-height: 1.3;
        }

        .logo:hover {
            color: var(--primary-dark);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 6px;
        }

        .nav-menu li {
            position: relative;
        }

        .nav-menu a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }

        .nav-menu a:hover,
        .nav-menu a.active {
            color: var(--primary);
            background: rgba(18,62,58,0.06);
        }

        .nav-menu a.active {
            font-weight: 600;
        }

        .nav-download-btn {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            background: var(--primary);
            color: #fff !important;
            border-radius: var(--radius-btn);
            font-size: 14.5px;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }

        .nav-download-btn:hover {
            background: var(--primary-dark);
            color: #fff !important;
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }

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

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            color: var(--primary);
            font-size: 24px;
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(18,62,58,0.08);
        }

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

        /* ========== Section 基础 ========== */
        section {
            padding: var(--section-pad-desktop) 0;
        }

        .section-alt {
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

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

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 12px;
        }

        .section-dark .section-title {
            color: #fff;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 680px;
        }

        .section-dark .section-subtitle {
            color: rgba(255,255,255,0.75);
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            transition: background var(--transition), color var(--transition), border var(--transition), transform var(--transition), box-shadow var(--transition);
            border: 1.5px solid transparent;
        }

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

        .btn:active {
            transform: scale(0.98);
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-secondary:hover {
            border-color: var(--primary-dark);
            color: var(--primary-dark);
            background: rgba(18,62,58,0.04);
            transform: translateY(-1px);
        }

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

        .btn-accent:hover {
            background: #b88a3a;
            border-color: #b88a3a;
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
            color: #fff;
        }

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

        .btn-light:hover {
            background: #f0f0f0;
            border-color: #f0f0f0;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255,255,255,0.6);
        }

        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.1);
            transform: translateY(-1px);
        }

        /* ========== Hero ========== */
        .hero {
            background: linear-gradient(135deg, #F0F4F2 0%, #E8EDE9 30%, #F6F5F1 70%, #EDECE5 100%);
            padding: 60px 0 72px;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 60%;
            height: 180%;
            background: radial-gradient(ellipse at center, rgba(18,62,58,0.05) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 16px;
        }

        .hero-subtitle {
            font-size: 16.5px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 32px;
        }

        .hero-trust-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 24px;
            font-size: 13.5px;
            color: var(--text-secondary);
        }

        .hero-trust-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-trust-item .trust-icon {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            flex-shrink: 0;
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .hero-phone-mockup {
            width: 280px;
            height: 560px;
            background: var(--primary);
            border-radius: 36px;
            padding: 14px;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .hero-phone-screen {
            width: 100%;
            height: 100%;
            border-radius: 26px;
            overflow: hidden;
            background: #fff;
            position: relative;
        }

        .hero-phone-screen img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-phone-notch {
            position: absolute;
            top: 24px;
            left: 50%;
            transform: translateX(-50%);
            width: 90px;
            height: 22px;
            background: var(--primary);
            border-radius: 0 0 16px 16px;
            z-index: 5;
        }

        /* ========== 公告条 ========== */
        .announcement-bar {
            background: var(--primary);
            padding: 0;
            overflow: hidden;
            position: relative;
        }

        .announcement-track {
            display: flex;
            gap: 32px;
            padding: 14px 24px;
            animation: scrollAnnouncement 30s linear infinite;
            white-space: nowrap;
        }

        .announcement-bar:hover .announcement-track {
            animation-play-state: paused;
        }

        @keyframes scrollAnnouncement {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        .announcement-item {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .announcement-badge {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
        }

        .announcement-text {
            font-size: 14px;
            color: rgba(255,255,255,0.85);
        }

        .announcement-text a {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .announcement-text a:hover {
            color: var(--accent-light);
        }

        /* ========== 栏目入口 ========== */
        .category-entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .category-entry-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            display: flex;
            align-items: center;
            gap: 16px;
            transition: box-shadow var(--transition), transform var(--transition), border var(--transition);
            position: relative;
        }

        .category-entry-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary);
        }

        .category-entry-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(18,62,58,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .category-entry-info h3 {
            font-size: 16.5px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }

        .category-entry-info p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .category-entry-arrow {
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 18px;
            color: var(--text-secondary);
            transition: color var(--transition), transform var(--transition);
        }

        .category-entry-card:hover .category-entry-arrow {
            color: var(--accent);
            transform: translateY(-50%) translateX(3px);
        }

        /* ========== Bento 栅格 ========== */
        .bento-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 18px;
            margin-top: 32px;
        }

        .bento-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .bento-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .bento-card.col-3 { grid-column: span 3; }
        .bento-card.col-4 { grid-column: span 4; }
        .bento-card.col-5 { grid-column: span 5; }
        .bento-card.col-6 { grid-column: span 6; }
        .bento-card.col-7 { grid-column: span 7; }
        .bento-card.col-8 { grid-column: span 8; }
        .bento-card.col-12 { grid-column: span 12; }

        .bento-card-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(18,62,58,0.07);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .bento-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 2px;
        }

        .bento-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .bento-card-img {
            width: 100%;
            border-radius: var(--radius-img);
            overflow: hidden;
            margin-top: auto;
        }

        .bento-card-img img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }

        /* ========== 下载主区 ========== */
        .download-section {
            background: var(--primary);
            color: #fff;
            padding: 64px 0;
        }

        .download-section .section-title {
            color: #fff;
        }

        .download-section .section-subtitle {
            color: rgba(255,255,255,0.75);
        }

        .download-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-top: 32px;
        }

        .download-info h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .download-info p {
            color: rgba(255,255,255,0.8);
            margin-bottom: 24px;
            font-size: 15px;
            line-height: 1.7;
        }

        .download-platform-list {
            display: flex;
            gap: 16px;
            margin-bottom: 24px;
        }

        .platform-item {
            background: rgba(255,255,255,0.1);
            border: 1px solid rgba(255,255,255,0.25);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            text-align: center;
            flex: 1;
            color: #fff;
            transition: background var(--transition), border var(--transition);
        }

        .platform-item:hover {
            background: rgba(255,255,255,0.18);
            border-color: var(--accent);
        }

        .platform-item-icon {
            font-size: 28px;
            margin-bottom: 8px;
        }

        .platform-item-name {
            font-size: 14px;
            font-weight: 600;
        }

        .platform-item-version {
            font-size: 12px;
            color: rgba(255,255,255,0.6);
        }

        .download-qr-placeholder {
            width: 160px;
            height: 160px;
            background: rgba(255,255,255,0.1);
            border: 2px dashed rgba(255,255,255,0.3);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto;
        }

        .download-qr-placeholder span {
            font-size: 13px;
            color: rgba(255,255,255,0.6);
            text-align: center;
            line-height: 1.5;
        }

        /* ========== 步骤条 ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .step-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            text-align: center;
            position: relative;
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .step-item:hover {
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            margin-bottom: 14px;
        }

        .step-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ========== 行情数据 ========== */
        .market-data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 32px;
        }

        .market-data-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            transition: box-shadow var(--transition);
        }

        .market-data-card:hover {
            box-shadow: var(--shadow-sm);
        }

        .market-data-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }

        .market-data-value {
            font-family: var(--font-mono);
            font-size: 22px;
            font-weight: 600;
            color: var(--text);
        }

        .market-data-change-up {
            color: var(--success);
            font-size: 13px;
            font-weight: 600;
        }

        .market-data-change-down {
            color: var(--warning);
            font-size: 13px;
            font-weight: 600;
        }

        /* ========== 资讯列表 ========== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .news-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .news-card-img {
            width: 100%;
            height: 180px;
            overflow: hidden;
            background: rgba(18,62,58,0.05);
        }

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

        .news-card:hover .news-card-img img {
            transform: scale(1.03);
        }

        .news-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }

        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12.5px;
            color: var(--text-secondary);
        }

        .news-card-badge {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 14px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(18,62,58,0.08);
            color: var(--primary);
        }

        .news-card-title {
            font-size: 15.5px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
        }

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

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

        .news-card-excerpt {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }

        .news-empty {
            background: var(--bg-white);
            border: 2px dashed var(--border);
            border-radius: var(--radius-card);
            padding: 48px 24px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 15px;
        }

        /* ========== 资金安全 ========== */
        .security-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-top: 32px;
        }

        .security-visual {
            background: rgba(18,62,58,0.05);
            border-radius: var(--radius-card);
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 320px;
        }

        .security-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .security-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .security-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 16px 18px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            transition: box-shadow var(--transition);
        }

        .security-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .security-item-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(18,62,58,0.07);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .security-item h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }

        .security-item p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ========== 用户评价 ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .testimonial-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        .testimonial-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }

        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(18,62,58,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .testimonial-name {
            font-size: 14.5px;
            font-weight: 600;
            color: var(--text);
        }

        .testimonial-stars {
            font-size: 13px;
            color: var(--accent);
            letter-spacing: 2px;
        }

        .testimonial-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== 新手学院 ========== */
        .academy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .academy-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
        }

        .academy-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .academy-card-img {
            width: 100%;
            height: 140px;
            overflow: hidden;
        }

        .academy-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .academy-card-body {
            padding: 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .academy-card-badge {
            display: inline-block;
            align-self: flex-start;
            padding: 2px 10px;
            border-radius: 14px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(201,154,71,0.15);
            color: #8a6a30;
        }

        .academy-card-title {
            font-size: 15.5px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
        }

        .academy-card-desc {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ========== 版本更新时间线 ========== */
        .timeline {
            margin-top: 32px;
            position: relative;
            padding-left: 28px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: var(--border);
        }

        .timeline-item {
            position: relative;
            padding-bottom: 28px;
        }

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

        .timeline-dot {
            position: absolute;
            left: -28px;
            top: 6px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg);
            box-shadow: 0 0 0 2px var(--primary);
        }

        .timeline-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 18px 22px;
            transition: box-shadow var(--transition);
        }

        .timeline-card:hover {
            box-shadow: var(--shadow-sm);
        }

        .timeline-version {
            font-family: var(--font-mono);
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .timeline-date {
            font-size: 12.5px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }

        .timeline-desc {
            font-size: 14px;
            color: var(--text);
            line-height: 1.7;
        }

        .timeline-desc a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            margin-top: 32px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: box-shadow var(--transition), border var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-item.active {
            border-left: 4px solid var(--primary);
            background: #F9FAF8;
        }

        .faq-question {
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            width: 100%;
            text-align: left;
            font-size: 15.5px;
            font-weight: 600;
            color: var(--text);
            transition: color var(--transition);
            min-height: 44px;
        }

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

        .faq-question:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .faq-icon {
            font-size: 20px;
            color: var(--text-secondary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .faq-answer .faq-tag {
            display: inline-block;
            margin-top: 10px;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            background: rgba(18,62,58,0.07);
            color: var(--primary);
        }

        /* ========== 风险提示 ========== */
        .risk-alert {
            background: #FDF5F0;
            border: 1px solid rgba(179,74,46,0.3);
            border-left: 4px solid var(--warning);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            margin-top: 16px;
        }

        .risk-alert h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--warning);
            margin-bottom: 8px;
        }

        .risk-alert p {
            font-size: 14.5px;
            color: #6B4A3A;
            line-height: 1.7;
        }

        /* ========== 表单 ========== */
        .contact-form {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px;
            max-width: 680px;
            margin: 32px auto 0;
            box-shadow: var(--shadow-sm);
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-bottom: 16px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-group label {
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            font-size: 15px;
            color: var(--text);
            background: var(--bg-white);
            transition: border var(--transition), box-shadow var(--transition);
            height: 44px;
            width: 100%;
        }

        .form-group textarea {
            height: 120px;
            resize: vertical;
            line-height: 1.6;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(18,62,58,0.1);
        }

        .form-group input.error,
        .form-group select.error,
        .form-group textarea.error {
            border-color: var(--warning);
        }

        .form-error-msg {
            font-size: 12.5px;
            color: var(--warning);
            display: none;
        }

        .form-error-msg.visible {
            display: block;
        }

        .form-submit-row {
            margin-top: 20px;
            display: flex;
            justify-content: flex-end;
        }

        .form-submit-btn {
            min-width: 140px;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }

        .form-submit-btn:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }

        .form-submit-btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .form-submit-btn:active {
            transform: scale(0.98);
        }

        /* ========== 底部 CTA ========== */
        .bottom-cta {
            background: var(--primary-deeper);
            color: #fff;
            padding: 64px 0;
            text-align: center;
        }

        .bottom-cta h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .bottom-cta p {
            font-size: 15.5px;
            color: rgba(255,255,255,0.75);
            margin-bottom: 28px;
        }

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

        /* ========== 页脚 ========== */
        .site-footer {
            background: #0E2E2A;
            color: rgba(255,255,255,0.7);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 13.5px;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }

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

        .footer-col li {
            margin-bottom: 8px;
        }

        .footer-col a {
            font-size: 13.5px;
            color: rgba(255,255,255,0.6);
            transition: color var(--transition);
        }

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

        .footer-risk-text {
            font-size: 12.5px;
            color: rgba(255,255,255,0.5);
            line-height: 1.7;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.15);
            padding-top: 20px;
            font-size: 12.5px;
            color: rgba(255,255,255,0.45);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hero-subtitle {
                margin: 0 auto 28px;
            }
            .hero-cta-group {
                justify-content: center;
            }
            .hero-trust-bar {
                justify-content: center;
            }
            .hero-visual {
                order: -1;
            }
            .bento-card.col-3,
            .bento-card.col-4,
            .bento-card.col-5,
            .bento-card.col-7,
            .bento-card.col-8 {
                grid-column: span 6;
            }
            .category-entry-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .market-data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid,
            .testimonial-grid,
            .academy-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .security-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767px) {
            :root {
                --section-pad-desktop: var(--section-pad-mobile);
            }

            .nav-menu {
                position: fixed;
                top: var(--nav-height);
                right: -100%;
                width: 280px;
                height: calc(100vh - var(--nav-height));
                background: var(--bg-white);
                flex-direction: column;
                align-items: stretch;
                padding: 20px;
                gap: 4px;
                border-left: 1px solid var(--border);
                transition: right 0.3s ease;
                z-index: 999;
                overflow-y: auto;
            }

            .nav-menu.open {
                right: 0;
            }

            .nav-menu a {
                padding: 12px 16px;
                font-size: 15px;
                border-radius: 10px;
                display: block;
            }

            .nav-download-btn {
                margin-top: 12px;
                justify-content: center;
            }

            .nav-toggle {
                display: flex;
            }

            .hero {
                padding: 40px 0 48px;
            }

            .hero-content h1 {
                font-size: 27px;
            }

            .hero-phone-mockup {
                width: 220px;
                height: 440px;
                border-radius: 28px;
                padding: 10px;
            }

            .hero-phone-notch {
                top: 18px;
                width: 70px;
                height: 16px;
            }

            .section-title {
                font-size: 22px;
            }

            .bento-grid {
                grid-template-columns: 1fr;
            }
            .bento-card.col-3,
            .bento-card.col-4,
            .bento-card.col-5,
            .bento-card.col-6,
            .bento-card.col-7,
            .bento-card.col-8,
            .bento-card.col-12 {
                grid-column: span 1;
            }

            .download-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .download-platform-list {
                flex-direction: column;
            }

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

            .market-data-grid {
                grid-template-columns: 1fr;
            }

            .news-grid,
            .testimonial-grid,
            .academy-grid {
                grid-template-columns: 1fr;
            }

            .form-row {
                grid-template-columns: 1fr;
            }

            .contact-form {
                padding: 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

            .announcement-track {
                gap: 24px;
                font-size: 13px;
            }

            .bottom-cta h2 {
                font-size: 23px;
            }
        }

        @media (min-width: 1280px) {
            .container {
                padding: 0 0;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 23px;
            }
            .hero-phone-mockup {
                width: 190px;
                height: 380px;
                border-radius: 24px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
        }

/* roulang page: article */
:root {
            --primary: #123E3A;
            --primary-dark: #0E302D;
            --primary-deeper: #0A2420;
            --accent: #C99A47;
            --accent-light: #E8C988;
            --bg: #F6F5F1;
            --bg-white: #FFFFFF;
            --text: #1B2926;
            --text-secondary: #5F6C69;
            --border: #D8E0DD;
            --warning: #B34A2E;
            --success: #2E7D5B;
            --shadow-sm: 0 4px 18px rgba(18,62,58,0.06);
            --shadow-md: 0 12px 28px rgba(18,62,58,0.12);
            --shadow-lg: 0 20px 45px rgba(18,62,58,0.15);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-img: 12px;
            --transition: 0.2s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-mono: "Roboto Mono", "SFMono-Regular", monospace;
            --container: 1200px;
            --nav-height: 68px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 40px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
        }
        button {
            cursor: pointer;
            background: none;
            border: none;
        }
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(246,245,241,0.96);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            line-height: 1.3;
        }
        .logo:hover {
            color: var(--primary-dark);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 6px;
            margin: 0;
            padding: 0;
        }
        .nav-menu li {
            position: relative;
        }
        .nav-menu a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }
        .nav-menu a:hover,
        .nav-menu a.active {
            color: var(--primary);
            background: rgba(18,62,58,0.06);
        }
        .nav-menu a.active {
            font-weight: 600;
        }
        .nav-download-btn {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            background: var(--primary);
            color: #fff !important;
            border-radius: var(--radius-btn);
            font-size: 14.5px;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }
        .nav-download-btn:hover {
            background: var(--primary-dark);
            color: #fff !important;
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }
        .nav-download-btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            color: var(--primary);
            font-size: 24px;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(18,62,58,0.08);
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ========== Section ========== */
        section {
            padding: var(--section-pad-desktop) 0;
        }
        .section-alt {
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-dark {
            background: var(--primary);
            color: #fff;
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 1.5px;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 12px;
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 720px;
        }
        .section-dark .section-desc {
            color: rgba(255,255,255,0.78);
        }

        /* ========== 按钮 ========== */
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            border: 1px solid var(--primary);
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }
        .btn-primary-custom:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-primary-custom:active {
            transform: scale(0.98);
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            background: transparent;
            color: var(--primary);
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            border: 1px solid var(--border);
            transition: border-color var(--transition), color var(--transition), background var(--transition);
        }
        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(18,62,58,0.04);
        }
        .btn-outline-custom:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-accent-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            border: 1px solid var(--accent);
        }
        .btn-accent-custom:hover {
            background: #B88A3D;
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        /* ========== 徽章 ========== */
        .badge-pill {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 20px;
            background: rgba(18,62,58,0.08);
            color: var(--primary);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .badge-accent {
            background: rgba(201,154,71,0.15);
            color: #8D6B2F;
        }
        .badge-warning {
            background: rgba(179,74,46,0.12);
            color: var(--warning);
        }
        .badge-success {
            background: rgba(46,125,91,0.12);
            color: var(--success);
        }
        .badge-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-secondary);
        }

        /* ========== 卡片 ========== */
        .card-custom {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
        }
        .card-custom:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(18,62,58,0.2);
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.45;
        }
        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== 图片占位 ========== */
        .image-cover {
            border-radius: var(--radius-img);
            overflow: hidden;
            background: #EEEDE8;
            border: 1px solid var(--border);
            position: relative;
        }
        .image-cover img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-img);
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-wrap {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13.5px;
            color: var(--text-secondary);
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .breadcrumb li {
            display: inline-flex;
            align-items: center;
        }
        .breadcrumb li + li::before {
            content: "/";
            margin-right: 8px;
            color: #B0BBB7;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 600;
        }

        /* ========== 文章头部 ========== */
        .article-hero {
            padding: 48px 0 32px;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
        }
        .article-hero-inner {
            max-width: 820px;
        }
        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        .article-meta-item {
            font-size: 13.5px;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta-item .sep-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: #B0BBB7;
            display: inline-block;
        }
        .article-h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text);
            margin-bottom: 16px;
        }

        /* ========== 文章正文 ========== */
        .article-main {
            padding: 48px 0;
        }
        .article-layout {
            max-width: 820px;
            margin: 0 auto;
        }
        .article-summary-box {
            background: #F2F4F1;
            border-left: 4px solid var(--accent);
            border-radius: 8px;
            padding: 20px 24px;
            margin-bottom: 32px;
            font-size: 15px;
            color: var(--text);
            line-height: 1.8;
        }
        .article-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin: 40px 0 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
        }
        .article-body h3 {
            font-size: 19px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text);
            margin: 32px 0 12px;
        }
        .article-body p {
            margin-bottom: 16px;
            color: #2A3734;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 20px 24px;
            padding: 0;
        }
        .article-body li {
            margin-bottom: 8px;
            color: #2A3734;
        }
        .article-body blockquote {
            background: #F9FAF8;
            border-left: 4px solid var(--primary);
            border-radius: 8px;
            padding: 18px 24px;
            margin: 24px 0;
            font-size: 15px;
            color: var(--text-secondary);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14.5px;
        }
        .article-body table th {
            background: var(--primary);
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        .article-body table td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            background: var(--bg-white);
        }
        .article-body table tr:nth-child(even) td {
            background: #FAFAF7;
        }
        .article-body a {
            color: var(--primary);
            font-weight: 500;
            border-bottom: 1px solid rgba(18,62,58,0.3);
        }
        .article-body a:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }
        .article-body .highlight-box {
            background: #F2F4F1;
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 20px 24px;
            margin: 24px 0;
        }
        .article-body .article-image-placeholder {
            border-radius: var(--radius-img);
            overflow: hidden;
            margin: 28px 0;
            background: #EEEDE8;
            border: 1px solid var(--border);
        }
        .article-body .article-image-placeholder img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .article-warning-block {
            background: rgba(179,74,46,0.05);
            border-left: 4px solid var(--warning);
            border-radius: 8px;
            padding: 20px 24px;
            margin-top: 32px;
            font-size: 14.5px;
            color: #5F4A42;
            line-height: 1.75;
        }
        .article-warning-block strong {
            color: var(--warning);
        }
        .article-empty {
            text-align: center;
            padding: 60px 24px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
        }
        .article-empty p {
            font-size: 18px;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        /* ========== 相关推荐 ========== */
        .related-section {
            padding: 48px 0 64px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .related-card-img {
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 14px;
            background: #EEEDE8;
            border: 1px solid var(--border);
        }
        .related-card-img img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .related-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.45;
            margin-bottom: 10px;
        }
        .related-card-title a {
            color: var(--text);
        }
        .related-card-title a:hover {
            color: var(--primary);
        }
        .related-card-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            font-size: 12.5px;
            color: var(--text-secondary);
            margin-top: auto;
        }

        /* ========== 返回入口 ========== */
        .article-back-section {
            padding: 24px 0 48px;
        }
        .article-back-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ========== 底部下载 CTA ========== */
        .article-download-cta {
            padding: 48px 0 64px;
        }
        .article-download-card {
            background: var(--primary);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            color: #fff;
        }
        .article-download-card h2 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .article-download-card p {
            color: rgba(255,255,255,0.78);
            margin: 0;
            font-size: 14.5px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #0E2E2A;
            color: rgba(255,255,255,0.78);
            padding: 56px 0 0;
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 32px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 13.5px;
            line-height: 1.7;
            color: rgba(255,255,255,0.65);
            margin: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul a {
            color: rgba(255,255,255,0.65);
            font-size: 13.5px;
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent-light);
        }
        .footer-risk-text {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255,255,255,0.55);
            margin: 0;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 12.5px;
            color: rgba(255,255,255,0.45);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            :root {
                --section-pad-desktop: var(--section-pad-mobile);
            }
            .nav-toggle {
                display: inline-flex;
            }
            .nav-menu {
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: flex-start;
                background: rgba(246,245,241,0.98);
                border-bottom: 1px solid var(--border);
                padding: 12px 24px 20px;
                gap: 4px;
                display: none;
                box-shadow: var(--shadow-md);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li {
                width: 100%;
            }
            .nav-menu a {
                display: block;
                padding: 12px 14px;
                font-size: 15px;
                width: 100%;
            }
            .nav-download-btn {
                display: block;
                text-align: center;
                margin-top: 8px;
            }
            .article-h1 {
                font-size: 26px;
            }
            .article-hero {
                padding: 32px 0 24px;
            }
            .article-main {
                padding: 32px 0;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .article-download-card {
                flex-direction: column;
                text-align: center;
                padding: 28px 20px;
            }
            .article-download-card h2 {
                font-size: 20px;
            }
            .article-body {
                font-size: 15px;
            }
            .article-body h2 {
                font-size: 21px;
            }
            .article-body h3 {
                font-size: 18px;
            }
        }
        @media (min-width: 768px) and (max-width: 1024px) {
            .nav-menu a {
                padding: 8px 10px;
                font-size: 13.5px;
            }
            .logo {
                font-size: 18px;
            }
        }
        @media (min-width: 1280px) {
            .container {
                padding: 0 24px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #123E3A;
            --primary-dark: #0E302D;
            --primary-deeper: #0A2420;
            --accent: #C99A47;
            --accent-light: #E8C988;
            --bg: #F6F5F1;
            --bg-white: #FFFFFF;
            --text: #1B2926;
            --text-secondary: #5F6C69;
            --border: #D8E0DD;
            --warning: #B34A2E;
            --success: #2E7D5B;
            --shadow-sm: 0 4px 18px rgba(18,62,58,0.06);
            --shadow-md: 0 12px 28px rgba(18,62,58,0.12);
            --shadow-lg: 0 20px 45px rgba(18,62,58,0.15);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-img: 12px;
            --transition: 0.2s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-mono: "Roboto Mono", "SFMono-Regular", monospace;
            --container: 1200px;
            --nav-height: 68px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 40px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
        }
        button {
            cursor: pointer;
            background: none;
            border: none;
        }
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(246,245,241,0.96);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            line-height: 1.3;
        }
        .logo:hover {
            color: var(--primary-dark);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 6px;
        }
        .nav-menu li {
            position: relative;
        }
        .nav-menu a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }
        .nav-menu a:hover,
        .nav-menu a.active {
            color: var(--primary);
            background: rgba(18,62,58,0.06);
        }
        .nav-menu a.active {
            font-weight: 600;
        }
        .nav-download-btn {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            background: var(--primary);
            color: #fff !important;
            border-radius: var(--radius-btn);
            font-size: 14.5px;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }
        .nav-download-btn:hover {
            background: var(--primary-dark);
            color: #fff !important;
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }
        .nav-download-btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            color: var(--primary);
            font-size: 24px;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(18,62,58,0.08);
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        /* ========== Section 基础 ========== */
        section {
            padding: var(--section-pad-desktop) 0;
        }
        .section-alt {
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-dark {
            background: var(--primary);
            color: #fff;
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 12px;
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }
        .section-dark .section-desc {
            color: rgba(255,255,255,0.75);
        }
        /* ========== 按钮 ========== */
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            border: 2px solid var(--primary);
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .btn-primary-custom:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-primary-custom:active {
            transform: translateY(0);
            background: var(--primary-deeper);
            border-color: var(--primary-deeper);
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 28px;
            background: transparent;
            color: var(--primary);
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            border: 2px solid var(--border);
            transition: border-color var(--transition), color var(--transition), box-shadow var(--transition), background var(--transition);
        }
        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .btn-outline-custom:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-outline-custom:active {
            background: rgba(18,62,58,0.05);
        }
        /* ========== 分类页头 ========== */
        .category-hero {
            background: linear-gradient(135deg, rgba(18,62,58,0.04) 0%, rgba(201,154,71,0.06) 100%);
            border-bottom: 1px solid var(--border);
            padding: 52px 0 48px;
        }
        .category-hero .section-label {
            margin-bottom: 8px;
        }
        .category-hero h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text);
            margin-bottom: 14px;
        }
        .category-hero .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .category-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .hero-meta .meta-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-secondary);
            background: var(--bg-white);
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid var(--border);
        }
        .hero-meta .meta-tag .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
        }
        /* ========== 卡片 ========== */
        .card-custom {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(18,62,58,0.2);
        }
        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(18,62,58,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
        }
        .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }
        /* ========== 网格 ========== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        /* ========== 安全体系 ========== */
        .security-feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .security-feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .security-feature-card .sf-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(18,62,58,0.08) 0%, rgba(201,154,71,0.15) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            margin-bottom: 18px;
        }
        .security-feature-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .security-feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }
        /* ========== 合规资质 ========== */
        .compliance-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .compliance-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .compliance-list li:hover {
            border-color: rgba(18,62,58,0.25);
            box-shadow: var(--shadow-sm);
        }
        .compliance-list .check-icon {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--success);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            flex-shrink: 0;
            margin-top: 3px;
        }
        .compliance-list .compliance-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }
        .compliance-list .compliance-text {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        /* ========== 风控技术要点 ========== */
        .risk-tech-bento {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 24px;
        }
        .risk-tech-main {
            background: var(--primary);
            border-radius: var(--radius-card);
            padding: 32px;
            color: #fff;
            min-height: 280px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            box-shadow: var(--shadow-md);
        }
        .risk-tech-main h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .risk-tech-main p {
            font-size: 14.5px;
            color: rgba(255,255,255,0.8);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .risk-tech-main .tech-tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tech-tag {
            display: inline-block;
            font-size: 12.5px;
            font-weight: 500;
            color: var(--accent-light);
            background: rgba(201,154,71,0.15);
            border: 1px solid rgba(201,154,71,0.3);
            padding: 5px 14px;
            border-radius: 20px;
        }
        .risk-tech-side {
            display: grid;
            grid-template-rows: repeat(2, 1fr);
            gap: 24px;
        }
        .risk-tech-side .tech-mini-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px 24px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .risk-tech-side .tech-mini-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .risk-tech-side .tech-mini-card h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .risk-tech-side .tech-mini-card p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 0;
        }
        /* ========== 用户保障措施 ========== */
        .protection-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .protection-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px 22px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .protection-list li:hover {
            border-color: rgba(18,62,58,0.2);
            box-shadow: var(--shadow-sm);
        }
        .protection-list .protect-num {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .protection-list .protect-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }
        .protection-list .protect-text {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.65;
        }
        /* ========== 隐私保护 ========== */
        .privacy-block {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-sm);
        }
        .privacy-block h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 14px;
        }
        .privacy-block .privacy-items {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .privacy-block .privacy-items li {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            padding-left: 20px;
            position: relative;
        }
        .privacy-block .privacy-items li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
        }
        /* ========== 风险提示 ========== */
        .risk-warning {
            background: linear-gradient(135deg, rgba(179,74,46,0.05) 0%, rgba(179,74,46,0.1) 100%);
            border-left: 5px solid var(--warning);
            border-radius: 0 14px 14px 0;
            padding: 28px 32px;
        }
        .risk-warning h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--warning);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .risk-warning p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }
        /* ========== FAQ ========== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-card) !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            background: var(--bg-white);
        }
        .faq-accordion .accordion-button {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            background: var(--bg-white);
            padding: 18px 22px;
            line-height: 1.5;
            transition: background var(--transition), color var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: #F9FAF8;
            color: var(--primary);
            border-left: 4px solid var(--primary);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--accent);
            outline: 2px solid var(--accent);
            outline-offset: -2px;
        }
        .faq-accordion .accordion-button::after {
            filter: invert(30%);
        }
        .faq-accordion .accordion-body {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding: 18px 22px;
            background: #F9FAF8;
        }
        /* ========== CTA ========== */
        .cta-category {
            background: var(--primary);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            box-shadow: var(--shadow-lg);
        }
        .cta-category h2 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .cta-category p {
            font-size: 15px;
            color: rgba(255,255,255,0.75);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .cta-category .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .cta-category .btn-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 30px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            border: 2px solid var(--accent);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .cta-category .btn-light:hover {
            background: #b8893a;
            border-color: #b8893a;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .cta-category .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 30px;
            background: transparent;
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            border: 2px solid rgba(255,255,255,0.4);
            transition: border-color var(--transition), background var(--transition), transform var(--transition);
        }
        .cta-category .btn-ghost-light:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            color: #fff;
            transform: translateY(-2px);
        }
        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--primary-deeper);
            color: rgba(255,255,255,0.8);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
        }
        .footer-brand h3 {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 13.5px;
            line-height: 1.7;
            color: rgba(255,255,255,0.65);
            margin-bottom: 0;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul a {
            font-size: 13.5px;
            color: rgba(255,255,255,0.65);
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent-light);
        }
        .footer-risk-text {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255,255,255,0.55);
            margin-bottom: 0;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 12.5px;
            color: rgba(255,255,255,0.45);
        }
        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .risk-tech-bento {
                grid-template-columns: 1fr;
            }
            .risk-tech-side {
                grid-template-rows: none;
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(246,245,241,0.98);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                gap: 4px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 12px 16px;
                text-align: left;
                display: block;
                width: 100%;
                font-size: 15px;
                border-radius: 8px;
            }
            .nav-download-btn {
                text-align: center;
                justify-content: center;
                margin-top: 6px;
            }
            .nav-toggle {
                display: flex;
            }
            section {
                padding: var(--section-pad-mobile) 0;
            }
            .category-hero {
                padding: 32px 0 28px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .section-title {
                font-size: 21px;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .compliance-list,
            .protection-list,
            .privacy-block .privacy-items {
                grid-template-columns: 1fr;
            }
            .risk-tech-side {
                grid-template-columns: 1fr;
            }
            .risk-tech-main {
                padding: 24px;
                min-height: auto;
            }
            .cta-category {
                padding: 32px 20px;
            }
            .cta-category h2 {
                font-size: 20px;
            }
            .cta-category .cta-actions {
                flex-direction: column;
            }
            .cta-category .btn-light,
            .cta-category .btn-ghost-light {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo {
                font-size: 17px;
            }
            .category-hero h1 {
                font-size: 22px;
            }
            .hero-meta .meta-tag {
                font-size: 12px;
                padding: 4px 10px;
            }
            .risk-warning {
                padding: 20px 18px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #123E3A;
            --primary-dark: #0E302D;
            --primary-deeper: #0A2420;
            --accent: #C99A47;
            --accent-light: #E8C988;
            --bg: #F6F5F1;
            --bg-white: #FFFFFF;
            --text: #1B2926;
            --text-secondary: #5F6C69;
            --border: #D8E0DD;
            --warning: #B34A2E;
            --success: #2E7D5B;
            --shadow-sm: 0 4px 18px rgba(18,62,58,0.06);
            --shadow-md: 0 12px 28px rgba(18,62,58,0.12);
            --shadow-lg: 0 20px 45px rgba(18,62,58,0.15);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-img: 12px;
            --transition: 0.2s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-mono: "Roboto Mono", "SFMono-Regular", monospace;
            --container: 1200px;
            --nav-height: 68px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 40px;
        }

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

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

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        button {
            cursor: pointer;
            background: none;
            border: none;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(246,245,241,0.96);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            line-height: 1.3;
        }

        .logo:hover {
            color: var(--primary-dark);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 6px;
        }

        .nav-menu li {
            position: relative;
        }

        .nav-menu a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }

        .nav-menu a:hover,
        .nav-menu a.active {
            color: var(--primary);
            background: rgba(18,62,58,0.06);
        }

        .nav-menu a.active {
            font-weight: 600;
        }

        .nav-download-btn {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            background: var(--primary);
            color: #fff !important;
            border-radius: var(--radius-btn);
            font-size: 14.5px;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }

        .nav-download-btn:hover {
            background: var(--primary-dark);
            color: #fff !important;
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }

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

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            color: var(--primary);
            font-size: 24px;
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(18,62,58,0.08);
        }

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

        /* ========== Section 基础 ========== */
        section {
            padding: var(--section-pad-desktop) 0;
        }

        .section-alt {
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

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

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 12px;
        }

        .section-dark .section-title {
            color: #fff;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 760px;
            margin-bottom: 30px;
        }

        /* ========== 分类页头 ========== */
        .page-hero {
            background: linear-gradient(135deg, rgba(18,62,58,0.04) 0%, rgba(201,154,71,0.06) 100%);
            border-bottom: 1px solid var(--border);
            padding: 48px 0 56px;
        }

        .page-hero .container {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
            align-items: center;
        }

        .page-hero h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary);
            margin-bottom: 14px;
        }

        .page-hero p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            max-width: 540px;
        }

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

        .hero-visual {
            border-radius: var(--radius-img);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: var(--bg-white);
            border: 1px solid var(--border);
        }

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

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
            text-align: center;
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }

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

        .btn-outline:hover {
            background: rgba(18,62,58,0.05);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
        }

        .btn-accent:hover {
            background: #B8893A;
            border-color: #B8893A;
            color: #fff;
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }

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

        /* ========== 下载卡片主体 ========== */
        .download-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .download-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }

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

        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: rgba(18,62,58,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            margin-bottom: 16px;
            color: var(--primary);
        }

        .download-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .version-tag {
            display: inline-block;
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--accent);
            background: rgba(201,154,71,0.12);
            padding: 3px 10px;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        .download-card p {
            font-size: 14.5px;
            color: var(--text-secondary);
            margin-bottom: 20px;
            flex: 1;
        }

        /* ========== 安装步骤 ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step-counter;
        }

        .step-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            position: relative;
            counter-increment: step-counter;
        }

        .step-item::before {
            content: counter(step-counter);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-family: var(--font-mono);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* ========== 系统要求 ========== */
        .requirement-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .requirement-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px;
        }

        .requirement-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
        }

        .requirement-list {
            list-style: none;
        }

        .requirement-list li {
            display: flex;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 14px;
        }

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

        .requirement-list span:first-child {
            color: var(--text-secondary);
        }

        .requirement-list span:last-child {
            font-weight: 500;
        }

        /* ========== 更新日志时间线 ========== */
        .timeline {
            position: relative;
            padding-left: 28px;
            max-width: 820px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 24px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -24px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent);
            border: 3px solid var(--bg-white);
            box-shadow: 0 0 0 2px var(--border);
        }

        .timeline-version {
            font-family: var(--font-mono);
            font-weight: 700;
            color: var(--primary);
            font-size: 15px;
            display: inline-block;
            margin-right: 12px;
        }

        .timeline-date {
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--text-secondary);
        }

        .timeline-item p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            background: rgba(18,62,58,0.04);
        }

        .faq-item[open] summary {
            background: #F9FAF8;
            border-left: 4px solid var(--primary);
        }

        .faq-icon {
            font-size: 20px;
            transition: transform var(--transition);
        }

        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
        }

        .faq-body {
            padding: 0 22px 18px;
            color: var(--text-secondary);
            font-size: 14.5px;
            line-height: 1.8;
            background: #F9FAF8;
        }

        /* ========== 警示块 ========== */
        .warning-box {
            background: rgba(179,74,46,0.05);
            border-left: 4px solid var(--warning);
            border-radius: var(--radius-card);
            padding: 24px 28px;
        }

        .warning-box h3 {
            color: var(--warning);
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .warning-box p {
            color: var(--text-secondary);
            font-size: 14.5px;
            margin-bottom: 8px;
        }

        .warning-box p:last-child {
            margin-bottom: 0;
        }

        /* ========== CTA ========== */
        .cta-card {
            background: var(--primary);
            border-radius: var(--radius-card);
            padding: 40px 32px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }

        .cta-card h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }

        .cta-card p {
            font-size: 15px;
            color: rgba(255,255,255,0.8);
            margin-bottom: 24px;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #0E2E2A;
            color: rgba(255,255,255,0.8);
            padding: 48px 0 24px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 13.5px;
            line-height: 1.7;
            color: rgba(255,255,255,0.7);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 12px;
        }

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

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col a {
            color: rgba(255,255,255,0.7);
            font-size: 13.5px;
            transition: color var(--transition);
        }

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

        .footer-risk-text {
            font-size: 13px;
            color: rgba(255,255,255,0.65);
            line-height: 1.7;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 12.5px;
            color: rgba(255,255,255,0.55);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .page-hero .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero-visual {
                max-width: 480px;
                margin: 0 auto;
            }
            .download-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .requirement-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --section-pad-desktop: 40px;
            }
            .nav-container {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg);
                flex-direction: column;
                align-items: stretch;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                padding: 12px 24px;
                gap: 4px;
                z-index: 999;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 12px 16px;
                font-size: 16px;
                border-radius: 8px;
            }
            .nav-download-btn {
                justify-content: center;
                margin-top: 6px;
            }
            .page-hero {
                padding: 32px 0 40px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .download-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-card {
                padding: 28px 20px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }

        @media (max-width: 480px) {
            .logo {
                font-size: 18px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .section-title {
                font-size: 22px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #123E3A;
            --primary-dark: #0E302D;
            --primary-deeper: #0A2420;
            --accent: #C99A47;
            --accent-light: #E8C988;
            --bg: #F6F5F1;
            --bg-white: #FFFFFF;
            --text: #1B2926;
            --text-secondary: #5F6C69;
            --border: #D8E0DD;
            --warning: #B34A2E;
            --success: #2E7D5B;
            --shadow-sm: 0 4px 18px rgba(18,62,58,0.06);
            --shadow-md: 0 12px 28px rgba(18,62,58,0.12);
            --shadow-lg: 0 20px 45px rgba(18,62,58,0.15);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-img: 12px;
            --transition: 0.2s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-mono: "Roboto Mono", "SFMono-Regular", monospace;
            --container: 1200px;
            --nav-height: 68px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 40px;
        }

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

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        button {
            cursor: pointer;
            background: none;
            border: none;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(246,245,241,0.96);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            line-height: 1.3;
        }

        .logo:hover {
            color: var(--primary-dark);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 6px;
        }

        .nav-menu li {
            position: relative;
        }

        .nav-menu a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }

        .nav-menu a:hover,
        .nav-menu a.active {
            color: var(--primary);
            background: rgba(18,62,58,0.06);
        }

        .nav-menu a.active {
            font-weight: 600;
        }

        .nav-download-btn {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            background: var(--primary);
            color: #fff !important;
            border-radius: var(--radius-btn);
            font-size: 14.5px;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }

        .nav-download-btn:hover {
            background: var(--primary-dark);
            color: #fff !important;
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }

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

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            color: var(--primary);
            font-size: 24px;
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(18,62,58,0.08);
        }

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

        /* ========== Section 基础 ========== */
        section {
            padding: var(--section-pad-desktop) 0;
        }

        .section-alt {
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

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

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 12px;
        }

        .section-dark .section-title {
            color: #fff;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .section-dark .section-subtitle {
            color: rgba(255,255,255,0.75);
        }

        /* ========== 分类页头 ========== */
        .category-hero {
            background: linear-gradient(135deg, #0E302D 0%, #123E3A 50%, #1A4A44 100%);
            color: #fff;
            padding: 64px 0 56px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background-image: url('/assets/images/42be92d3f46d807c.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
        }

        .category-hero h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
            color: #fff;
            letter-spacing: 0.3px;
        }

        .category-hero .hero-subtitle {
            font-size: 16px;
            color: rgba(255,255,255,0.82);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: rgba(255,255,255,0.65);
            margin-bottom: 20px;
        }

        .breadcrumb-nav a {
            color: rgba(255,255,255,0.8);
            transition: color var(--transition);
        }

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

        .breadcrumb-nav .current {
            color: #fff;
            font-weight: 500;
        }

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

        /* ========== 学习路径卡片 ========== */
        .path-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .path-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 26px 22px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .path-card .path-step-num {
            font-family: var(--font-mono);
            font-size: 15px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 1px;
            margin-bottom: 10px;
            display: inline-block;
        }

        .path-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .path-card p {
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 模拟交易引导 - 左右图文 ========== */
        .sim-guide-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .sim-guide-text h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .sim-guide-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .sim-guide-text ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .sim-guide-text ul li {
            position: relative;
            padding-left: 26px;
            font-size: 14.5px;
            color: var(--text);
            line-height: 1.7;
            margin-bottom: 10px;
        }

        .sim-guide-text ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 0;
            color: var(--success);
            font-weight: 700;
            font-size: 15px;
        }

        .sim-guide-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: var(--bg);
            aspect-ratio: 4/3;
        }

        .sim-guide-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ========== 费率与规则说明 ========== */
        .rule-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .rule-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .rule-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .rule-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }

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

        .rule-card .rule-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(201,154,71,0.1);
            padding: 3px 10px;
            border-radius: 20px;
            margin-bottom: 10px;
        }

        /* ========== CMS 列表卡片 ========== */
        .cms-list-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 28px;
        }

        .cms-info-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .cms-info-card .cms-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(18,62,58,0.08);
            padding: 3px 10px;
            border-radius: 20px;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .cms-info-card h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .cms-info-card h4 a {
            color: var(--text);
            transition: color var(--transition);
        }

        .cms-info-card h4 a:hover {
            color: var(--primary);
        }

        .cms-info-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            flex: 1;
        }

        .cms-info-card .cms-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .cms-info-card .cms-meta time {
            font-family: var(--font-mono);
            font-size: 12.5px;
        }

        .empty-state {
            background: var(--bg-white);
            border: 1px dashed var(--border);
            border-radius: var(--radius-card);
            padding: 40px 24px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 15px;
            margin-top: 28px;
        }

        /* ========== FAQ 手风琴 ========== */
        .faq-list {
            margin-top: 28px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 10px;
            overflow: hidden;
            transition: border-color var(--transition);
        }

        .faq-item[open] {
            border-left: 4px solid var(--primary);
            background: #F9FAF8;
        }

        .faq-item summary {
            padding: 18px 22px;
            font-size: 15.5px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: color var(--transition);
            position: relative;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--text-secondary);
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 16px;
        }

        .faq-item[open] summary::after {
            content: '−';
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-item summary:hover {
            color: var(--primary);
        }

        .faq-item .faq-body {
            padding: 0 22px 20px;
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ========== 风险教育警示块 ========== */
        .risk-education-box {
            background: #FDF8F5;
            border: 1px solid rgba(179,74,46,0.25);
            border-left: 4px solid var(--warning);
            border-radius: 10px;
            padding: 28px 30px;
            margin-top: 28px;
        }

        .risk-education-box h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--warning);
            margin-bottom: 12px;
        }

        .risk-education-box p {
            font-size: 14.5px;
            color: var(--text);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ========== CTA ========== */
        .cta-box {
            background: var(--primary);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-md);
        }

        .cta-box h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .cta-box p {
            font-size: 15px;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }

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

        .btn-primary-cta {
            display: inline-flex;
            align-items: center;
            padding: 14px 32px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 15.5px;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            border: none;
        }

        .btn-primary-cta:hover {
            background: #B88A3C;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(201,154,71,0.3);
        }

        .btn-secondary-cta {
            display: inline-flex;
            align-items: center;
            padding: 14px 28px;
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255,255,255,0.4);
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition);
        }

        .btn-secondary-cta:hover {
            border-color: var(--accent-light);
            color: var(--accent-light);
            background: rgba(255,255,255,0.05);
        }

        /* ========== 按钮通用 ========== */
        .btn-outline-primary-custom {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            border: 1px solid var(--primary);
            color: var(--primary);
            border-radius: var(--radius-btn);
            font-size: 14.5px;
            font-weight: 500;
            background: transparent;
            transition: all var(--transition);
        }

        .btn-outline-primary-custom:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-outline-primary-custom:focus-visible,
        .btn-primary-cta:focus-visible,
        .btn-secondary-cta:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--primary-deeper);
            color: rgba(255,255,255,0.8);
            padding: 56px 0 24px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 13.5px;
            line-height: 1.8;
            color: rgba(255,255,255,0.65);
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

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

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255,255,255,0.65);
            font-size: 13.5px;
            transition: color var(--transition);
        }

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

        .footer-risk-text {
            font-size: 13px;
            color: rgba(255,255,255,0.55);
            line-height: 1.7;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 12.5px;
            color: rgba(255,255,255,0.5);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .path-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .rule-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .sim-guide-wrap {
                gap: 32px;
            }

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

        @media (max-width: 767px) {
            :root {
                --section-pad-desktop: 40px;
                --nav-height: 60px;
            }

            section {
                padding: 40px 0;
            }

            .site-header {
                height: var(--nav-height);
            }

            .logo {
                font-size: 17px;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-menu {
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: flex-start;
                background: var(--bg);
                border-bottom: 1px solid var(--border);
                padding: 16px 24px;
                gap: 4px;
                display: none;
                box-shadow: var(--shadow-md);
            }

            .nav-menu.open {
                display: flex;
            }

            .nav-menu li {
                width: 100%;
            }

            .nav-menu a {
                display: block;
                width: 100%;
                padding: 12px 16px;
                font-size: 15px;
                border-radius: 8px;
            }

            .nav-download-btn {
                display: block;
                text-align: center;
                margin-top: 8px;
                padding: 12px 20px;
            }

            .category-hero {
                padding: 40px 0 40px;
            }

            .category-hero h1 {
                font-size: 26px;
            }

            .category-hero .hero-subtitle {
                font-size: 14.5px;
            }

            .section-title {
                font-size: 22px;
            }

            .path-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .rule-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .sim-guide-wrap {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .sim-guide-image {
                order: -1;
                aspect-ratio: 16/10;
            }

            .cms-list-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

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

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

            .btn-primary-cta,
            .btn-secondary-cta {
                width: 100%;
                justify-content: center;
                max-width: 320px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (min-width: 768px) and (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }

            .nav-menu a {
                padding: 8px 10px;
                font-size: 13.5px;
            }

            .category-hero h1 {
                font-size: 30px;
            }
        }

        @media (min-width: 1280px) {
            .container {
                padding: 0 24px;
            }
        }