/* roulang page: index */
:root {
            --color-bg-primary: #0C1220;
            --color-bg-secondary: #11182A;
            --color-bg-tertiary: #161E32;
            --color-accent: #FF9F43;
            --color-accent-hover: #FFB366;
            --color-accent-soft: rgba(255, 159, 67, 0.12);
            --color-teal: #2DD4BF;
            --color-up: #F04444;
            --color-down: #16B364;
            --color-flat: #9AA5B5;
            --color-text-primary: #F5F7FA;
            --color-text-secondary: #A7B0C1;
            --color-text-muted: #667085;
            --color-border: rgba(160, 174, 192, 0.18);
            --color-border-hover: rgba(160, 174, 192, 0.35);
            --radius-card: 14px;
            --radius-tag: 999px;
            --radius-btn: 8px;
            --shadow-card: 0 10px 24px rgba(0, 0, 0, 0.28);
            --shadow-hover: 0 16px 32px rgba(0, 0, 0, 0.38);
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --container-max: 1240px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", system-ui, -apple-system, sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;
        }

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

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

        body {
            font-family: var(--font-family);
            background-color: var(--color-bg-primary);
            color: var(--color-text-primary);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-teal);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

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

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

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(12, 18, 32, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--color-accent);
            color: #0C1220;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .logo-text .highlight {
            color: var(--color-accent);
        }

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

        .main-nav a {
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast), background-color var(--transition-fast);
        }

        .main-nav a:hover {
            color: var(--color-text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--color-accent);
            background: var(--color-accent-soft);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 2px;
            border-radius: 2px;
            background: var(--color-accent);
        }

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

        .search-trigger {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text-muted);
            font-size: 14px;
            transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
            background: transparent;
        }

        .search-trigger:hover {
            border-color: var(--color-border-hover);
            color: var(--color-text-secondary);
            background: rgba(255, 255, 255, 0.05);
        }

        .search-trigger svg {
            width: 16px;
            height: 16px;
            flex-shrink: 0;
        }

        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--color-border);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 4px;
            background: transparent;
        }

        .hamburger span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--color-text-primary);
            border-radius: 2px;
            transition: transform var(--transition-fast), opacity var(--transition-fast);
        }

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

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

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

        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-bg-primary);
            z-index: 99;
            padding: 24px;
            flex-direction: column;
            gap: 8px;
            border-top: 1px solid var(--color-border);
            overflow-y: auto;
        }

        .mobile-menu.active {
            display: flex;
        }

        .mobile-menu .mobile-search {
            margin-bottom: 16px;
        }

        .mobile-menu .mobile-search input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            background: var(--color-bg-secondary);
            color: var(--color-text-primary);
            font-size: 15px;
        }

        .mobile-menu a {
            padding: 14px 16px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border: 1px solid transparent;
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-text-primary);
        }

        .mobile-menu a.active {
            color: var(--color-accent);
            background: var(--color-accent-soft);
            border-color: rgba(255, 159, 67, 0.2);
        }

        /* ===== Section Base ===== */
        .section {
            padding: var(--spacing-section) 0;
        }

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

        .section-tight {
            padding: 48px 0;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: var(--radius-tag);
            background: var(--color-accent-soft);
            color: var(--color-accent);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 680px;
            line-height: 1.65;
            margin-bottom: 32px;
        }

        /* ===== Hero ===== */
        .hero {
            padding: 60px 0 72px;
            position: relative;
            overflow: hidden;
            background: var(--color-bg-primary);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/e47631325d26800f.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.06;
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 1;
        }

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

        .hero-content {
            max-width: 560px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: var(--radius-tag);
            background: rgba(45, 212, 191, 0.1);
            color: var(--color-teal);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .hero-badge .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-teal);
            animation: pulse-dot 1.8s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(0.7); }
        }

        .hero h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.28;
            letter-spacing: -0.025em;
            color: var(--color-text-primary);
            margin-bottom: 20px;
        }

        .hero h1 .line-break {
            display: block;
        }

        .hero h1 .accent {
            color: var(--color-accent);
        }

        .hero-subtitle {
            font-size: 17px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 480px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
            white-space: nowrap;
        }

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

        .btn-primary {
            background: var(--color-accent);
            color: #0C1220;
            border: 1px solid var(--color-accent);
        }

        .btn-primary:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 8px 20px rgba(255, 159, 67, 0.3);
        }

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

        .btn-secondary:hover {
            border-color: var(--color-border-hover);
            background: rgba(255, 255, 255, 0.06);
        }

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

        .btn-outline-accent:hover {
            background: var(--color-accent-soft);
            border-color: var(--color-accent-hover);
        }

        .hero-panel {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }

        .hero-panel-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-border);
        }

        .hero-panel-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
        }

        .hero-panel-status {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--color-teal);
        }

        .hero-panel-status .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-teal);
        }

        .hero-chart-placeholder {
            width: 100%;
            height: 240px;
            border-radius: 10px;
            background: linear-gradient(180deg, rgba(45, 212, 191, 0.08) 0%, rgba(45, 212, 191, 0.02) 100%);
            border: 1px solid rgba(45, 212, 191, 0.15);
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .hero-chart-placeholder .chart-line {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 180px;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 180' preserveAspectRatio='none'%3E%3Cpath d='M0,150 L60,130 L100,140 L160,90 L220,110 L280,60 L340,85 L400,40' fill='none' stroke='%232DD4BF' stroke-width='2.5' stroke-linecap='round'/%3E%3Cpath d='M0,150 L60,130 L100,140 L160,90 L220,110 L280,60 L340,85 L400,40 L400,180 L0,180 Z' fill='rgba(45,212,191,0.08)'/%3E%3C/svg%3E");
            background-size: 100% 100%;
            background-repeat: no-repeat;
        }

        .hero-chart-placeholder .chart-label {
            position: relative;
            z-index: 2;
            font-size: 13px;
            color: var(--color-text-muted);
            pointer-events: none;
        }

        .hero-panel-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
        }

        .hero-panel-stat {
            padding: 12px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--color-border);
        }

        .hero-panel-stat .label {
            font-size: 12px;
            color: var(--color-text-muted);
            margin-bottom: 4px;
        }

        .hero-panel-stat .value {
            font-size: 18px;
            font-weight: 700;
            font-family: var(--font-mono);
            letter-spacing: -0.02em;
        }

        .hero-panel-stat .change {
            font-size: 13px;
            font-weight: 600;
            font-family: var(--font-mono);
        }

        .change-up { color: var(--color-up); }
        .change-down { color: var(--color-down); }
        .change-flat { color: var(--color-flat); }

        /* ===== Ticker Bar ===== */
        .ticker-bar {
            background: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            padding: 10px 0;
            overflow: hidden;
        }

        .ticker-wrap {
            display: flex;
            align-items: center;
            gap: 32px;
            animation: ticker-scroll 30s linear infinite;
            white-space: nowrap;
            width: max-content;
        }

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

        .ticker-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        .ticker-item .tag {
            padding: 2px 8px;
            border-radius: var(--radius-tag);
            font-size: 11px;
            font-weight: 600;
        }

        .tag-up { background: rgba(240, 68, 68, 0.12); color: var(--color-up); }
        .tag-down { background: rgba(22, 179, 100, 0.12); color: var(--color-down); }
        .tag-flat { background: rgba(154, 165, 181, 0.12); color: var(--color-flat); }

        /* ===== Mini Index Cards ===== */
        .index-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 16px;
        }

        .index-card {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 18px;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .index-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-border-hover);
        }

        .index-card .name {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 8px;
        }

        .index-card .value {
            font-size: 24px;
            font-weight: 700;
            font-family: var(--font-mono);
            letter-spacing: -0.02em;
            color: var(--color-text-primary);
        }

        .index-card .change-row {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 8px;
        }

        .index-card .change {
            font-size: 14px;
            font-weight: 600;
            font-family: var(--font-mono);
        }

        .index-card .sparkline {
            height: 36px;
            margin-top: 12px;
            border-radius: 4px;
            opacity: 0.7;
        }

        .spark-up {
            background: linear-gradient(90deg, rgba(240, 68, 68, 0.2) 0%, rgba(240, 68, 68, 0.05) 100%);
        }

        .spark-down {
            background: linear-gradient(90deg, rgba(22, 179, 100, 0.2) 0%, rgba(22, 179, 100, 0.05) 100%);
        }

        /* ===== Value Prop Search Section ===== */
        .value-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .value-text h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-primary);
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .value-text p {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .value-points {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 24px;
        }

        .value-point {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--color-text-primary);
        }

        .value-point .icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-accent-soft);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            flex-shrink: 0;
        }

        .value-search-box {
            background: var(--color-bg-primary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
        }

        .value-search-box .search-row {
            display: flex;
            gap: 10px;
            margin-bottom: 16px;
        }

        .value-search-box input {
            flex: 1;
            padding: 12px 16px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            background: var(--color-bg-secondary);
            color: var(--color-text-primary);
            font-size: 15px;
            transition: border-color var(--transition-fast);
        }

        .value-search-box input:focus {
            border-color: var(--color-teal);
            outline: none;
            box-shadow: 0 0 0 2px rgba(45, 212, 191, 0.15);
        }

        .quick-btns {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .quick-btn {
            padding: 8px 14px;
            border-radius: var(--radius-tag);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--color-border);
            font-size: 13px;
            color: var(--color-text-secondary);
            transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
        }

        .quick-btn:hover {
            border-color: var(--color-accent);
            background: var(--color-accent-soft);
            color: var(--color-accent);
        }

        /* ===== Channel Grid ===== */
        .channel-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 14px;
        }

        .channel-card {
            padding: 18px;
            border-radius: var(--radius-card);
            background: var(--color-bg-primary);
            border: 1px solid var(--color-border);
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .channel-card:hover {
            transform: translateY(-2px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card);
        }

        .channel-card .ch-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
        }

        .channel-card .ch-desc {
            font-size: 13px;
            color: var(--color-text-muted);
        }

        /* ===== Ranking Tabs ===== */
        .tabs-container {
            margin-bottom: 20px;
        }

        .tabs-nav {
            display: flex;
            gap: 6px;
            border-bottom: 1px solid var(--color-border);
            padding-bottom: 8px;
            flex-wrap: wrap;
        }

        .tab-btn {
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-muted);
            border: 1px solid transparent;
            transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
        }

        .tab-btn:hover {
            color: var(--color-text-primary);
            background: rgba(255, 255, 255, 0.05);
        }

        .tab-btn.active {
            color: var(--color-accent);
            background: var(--color-accent-soft);
            border-color: rgba(255, 159, 67, 0.2);
        }

        .tab-panel {
            display: none;
        }

        .tab-panel.active {
            display: block;
        }

        .ranking-table {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .ranking-row {
            display: grid;
            grid-template-columns: 50px 1fr 100px 80px 80px;
            gap: 12px;
            padding: 14px 16px;
            border-bottom: 1px solid var(--color-border);
            align-items: center;
            transition: background var(--transition-fast);
        }

        .ranking-row:hover {
            background: rgba(255, 255, 255, 0.03);
        }

        .ranking-row.header-row {
            font-size: 12px;
            color: var(--color-text-muted);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            border-bottom: 1px solid var(--color-border-hover);
        }

        .ranking-row.header-row:hover {
            background: transparent;
        }

        .rk-rank {
            font-size: 14px;
            font-weight: 700;
            font-family: var(--font-mono);
            color: var(--color-text-muted);
        }

        .rk-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
        }

        .rk-code {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .rk-price {
            font-size: 16px;
            font-weight: 700;
            font-family: var(--font-mono);
            color: var(--color-text-primary);
        }

        .rk-change {
            font-size: 14px;
            font-weight: 600;
            font-family: var(--font-mono);
            text-align: right;
        }

        /* ===== Topic Tags ===== */
        .topic-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .topic-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-tag);
            border: 1px solid var(--color-border);
            font-size: 14px;
            color: var(--color-text-secondary);
            transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
        }

        .topic-tag:hover {
            border-color: var(--color-accent);
            background: var(--color-accent-soft);
            color: var(--color-accent);
        }

        .topic-tag .heat {
            font-size: 12px;
            font-weight: 600;
            font-family: var(--font-mono);
            color: var(--color-accent);
        }

        /* ===== Market Overview ===== */
        .market-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 24px;
        }

        .chart-large {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            min-height: 320px;
            position: relative;
            overflow: hidden;
        }

        .chart-large .chart-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 16px;
        }

        .chart-large .chart-area {
            height: 220px;
            border-radius: 8px;
            background: linear-gradient(180deg, rgba(255, 159, 67, 0.1) 0%, rgba(255, 159, 67, 0.02) 100%);
            border: 1px solid rgba(255, 159, 67, 0.2);
            position: relative;
            overflow: hidden;
        }

        .chart-large .chart-area::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 160px;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 500 160' preserveAspectRatio='none'%3E%3Cpath d='M0,130 L80,110 L150,120 L220,75 L300,95 L370,55 L440,70 L500,30' fill='none' stroke='%23FF9F43' stroke-width='2.5' stroke-linecap='round'/%3E%3C/svg%3E");
            background-size: 100% 100%;
            background-repeat: no-repeat;
        }

        .market-side-cards {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .market-side-card {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: border-color var(--transition-fast);
        }

        .market-side-card:hover {
            border-color: var(--color-border-hover);
        }

        .msc-label {
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .msc-value {
            font-size: 18px;
            font-weight: 700;
            font-family: var(--font-mono);
        }

        /* ===== CMS News Section ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 18px;
        }

        .news-card {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-border-hover);
        }

        .news-card .news-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .news-excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .news-card .news-category {
            padding: 2px 10px;
            border-radius: var(--radius-tag);
            background: rgba(255, 159, 67, 0.1);
            color: var(--color-accent);
            font-size: 12px;
            font-weight: 500;
        }

        /* ===== Tool Grid ===== */
        .tool-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 16px;
        }

        .tool-card {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .tool-card:hover {
            transform: translateY(-3px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card);
        }

        .tool-card .tool-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-accent-soft);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 12px;
        }

        .tool-card .tool-name {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 6px;
        }

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

        /* ===== Steps ===== */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .step-item {
            text-align: center;
            padding: 24px 16px;
            border-radius: var(--radius-card);
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            position: relative;
        }

        .step-number {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #0C1220;
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
        }

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

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

        /* ===== Mobile Feature ===== */
        .mobile-feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .mobile-mockup {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            padding: 20px;
            max-width: 320px;
            margin: 0 auto;
            box-shadow: var(--shadow-card);
        }

        .mobile-mockup .phone-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--color-border);
        }

        .mobile-mockup .phone-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-primary);
        }

        .mobile-mockup .phone-chart {
            height: 140px;
            border-radius: 8px;
            background: linear-gradient(180deg, rgba(45, 212, 191, 0.12) 0%, rgba(45, 212, 191, 0.02) 100%);
            border: 1px solid rgba(45, 212, 191, 0.15);
            margin-bottom: 12px;
        }

        .mobile-mockup .phone-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
        }

        .mobile-mockup .phone-stat {
            padding: 10px;
            border-radius: 6px;
            background: rgba(255, 255, 255, 0.04);
            font-size: 13px;
            text-align: center;
        }

        .mobile-feature-text h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 16px;
        }

        .mobile-feature-text p {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .mobile-feature-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .mobile-feature-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            color: var(--color-text-primary);
            list-style: none;
        }

        .mobile-feature-list li::before {
            content: '✓';
            color: var(--color-teal);
            font-weight: 700;
            flex-shrink: 0;
        }

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

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

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

        .faq-question {
            width: 100%;
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            background: transparent;
            text-align: left;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.04);
        }

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }

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

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.65;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding: 0 20px 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 56px 0;
        }

        .cta-box {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 40px;
            text-align: center;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-teal));
            opacity: 0.6;
        }

        .cta-box h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 12px;
        }

        .cta-box p {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-form input {
            padding: 12px 18px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            background: var(--color-bg-primary);
            color: var(--color-text-primary);
            font-size: 15px;
            min-width: 260px;
            transition: border-color var(--transition-fast);
        }

        .cta-form input:focus {
            border-color: var(--color-teal);
            outline: none;
        }

        /* ===== SEO Text ===== */
        .seo-text {
            max-width: 820px;
        }

        .seo-text h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 16px;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .logo-text {
            font-size: 16px;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
        }

        .footer-col h3 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul a {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 20px;
            font-size: 13px;
            color: var(--color-text-muted);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        /* ===== Grid Background Pattern ===== */
        .grid-bg {
            background-image:
                linear-gradient(rgba(160, 174, 192, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(160, 174, 192, 0.04) 1px, transparent 1px);
            background-size: 32px 32px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-panel {
                max-width: 100%;
            }

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

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

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

            .mobile-mockup {
                max-width: 280px;
            }

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

            .section {
                padding: 64px 0;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }

            .main-nav {
                display: none;
            }

            .nav-right .search-trigger {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .mobile-menu {
                top: 64px;
            }

            .hero {
                padding: 40px 0 56px;
            }

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

            .hero-subtitle {
                font-size: 16px;
            }

            .section {
                padding: 48px 0;
            }

            .section-title {
                font-size: 24px;
            }

            .ranking-row {
                grid-template-columns: 40px 1fr 70px 60px;
                gap: 8px;
                padding: 12px;
                font-size: 13px;
            }

            .ranking-row .rk-change {
                font-size: 12px;
            }

            .ranking-row.header-row {
                display: none;
            }

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

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

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

            .cta-box {
                padding: 28px 16px;
            }

            .cta-form input {
                min-width: 100%;
            }

            .index-grid {
                grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            }

            .channel-grid {
                grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

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

            .hero-actions {
                flex-direction: column;
            }

            .btn {
                width: 100%;
            }

            .hero-panel-stats {
                grid-template-columns: 1fr;
            }

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

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

            .channel-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .channel-card {
                padding: 12px;
            }

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

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

        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }

/* roulang page: article */
:root {
            --color-bg-primary: #0C1220;
            --color-bg-secondary: #11182A;
            --color-bg-tertiary: #161E32;
            --color-accent: #FF9F43;
            --color-accent-hover: #FFB366;
            --color-accent-soft: rgba(255, 159, 67, 0.12);
            --color-teal: #2DD4BF;
            --color-up: #F04444;
            --color-down: #16B364;
            --color-flat: #9AA5B5;
            --color-text-primary: #F5F7FA;
            --color-text-secondary: #A7B0C1;
            --color-text-muted: #667085;
            --color-border: rgba(160, 174, 192, 0.18);
            --color-border-hover: rgba(160, 174, 192, 0.35);
            --radius-card: 14px;
            --radius-tag: 999px;
            --radius-btn: 8px;
            --shadow-card: 0 10px 24px rgba(0, 0, 0, 0.28);
            --shadow-hover: 0 16px 32px rgba(0, 0, 0, 0.38);
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --container-max: 1240px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", system-ui, -apple-system, sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;
        }

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

        body {
            font-family: var(--font-family);
            background-color: var(--color-bg-primary);
            color: var(--color-text-primary);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-teal);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

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

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

        /* Header & Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(12, 18, 32, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
            position: relative;
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--color-accent);
            color: #0C1220;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .logo-text .highlight {
            color: var(--color-accent);
        }

        .menu-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text-secondary);
            font-size: 22px;
            transition: border-color var(--transition-fast), color var(--transition-fast);
        }

        .menu-toggle:hover {
            border-color: var(--color-border-hover);
            color: var(--color-text-primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            transition: max-height var(--transition-base), opacity var(--transition-base);
        }

        .main-nav a {
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast), background-color var(--transition-fast);
        }

        .main-nav a:hover {
            color: var(--color-text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--color-accent);
            background: var(--color-accent-soft);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 2px;
            border-radius: 2px;
            background: var(--color-accent);
        }

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

        .search-trigger {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text-muted);
            font-size: 14px;
            transition: border-color var(--transition-fast), color var(--transition-fast);
        }

        .search-trigger:hover {
            border-color: var(--color-border-hover);
            color: var(--color-text-primary);
        }

        /* Article specific */
        .article-page {
            padding: 40px 0 80px;
        }

        .breadcrumb-bar {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 28px;
        }

        .breadcrumb-bar a {
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb-sep {
            color: var(--color-text-muted);
            user-select: none;
        }

        .article-header-card {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px 32px 28px;
            margin-bottom: 28px;
            box-shadow: var(--shadow-card);
        }

        .article-category-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            background: var(--color-accent-soft);
            color: var(--color-accent);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .article-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.02em;
            color: var(--color-text-primary);
            margin: 0 0 18px;
        }

        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 14px;
            color: var(--color-text-muted);
            border-top: 1px solid var(--color-border);
            padding-top: 16px;
            margin-top: 8px;
        }

        .article-cover {
            margin-bottom: 28px;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            background: var(--color-bg-secondary);
        }

        .article-cover img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            display: block;
        }

        .article-content {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text-secondary);
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin: 32px 0 16px;
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin: 24px 0 12px;
            line-height: 1.4;
        }

        .article-content p {
            margin-bottom: 16px;
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0;
            padding-left: 24px;
        }

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

        .article-content blockquote {
            border-left: 3px solid var(--color-accent);
            padding: 12px 20px;
            margin: 24px 0;
            background: rgba(255, 159, 67, 0.06);
            border-radius: 0 var(--radius-btn) var(--radius-btn) 0;
            color: var(--color-text-secondary);
        }

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

        .article-content table th,
        .article-content table td {
            border: 1px solid var(--color-border);
            padding: 12px 16px;
            text-align: left;
        }

        .article-content table th {
            background: var(--color-bg-tertiary);
            color: var(--color-text-primary);
            font-weight: 600;
        }

        .article-content img {
            border-radius: var(--radius-btn);
            margin: 24px 0;
        }

        .empty-state {
            text-align: center;
            padding: 60px 20px;
            color: var(--color-text-muted);
            font-size: 16px;
        }

        .empty-state a {
            color: var(--color-accent);
            font-weight: 600;
            margin-left: 6px;
        }

        .related-section {
            margin-top: 40px;
        }

        .section-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

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

        .related-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin: 12px 0 8px;
            line-height: 1.5;
        }

        .related-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        .article-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 40px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 22px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
            border: 1px solid transparent;
        }

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

        .btn-primary {
            background: var(--color-accent);
            color: #0C1220;
        }

        .btn-primary:hover {
            background: var(--color-accent-hover);
        }

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

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--color-border-hover);
            color: var(--color-text-primary);
        }

        .subscribe-card {
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px;
            margin-top: 40px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            box-shadow: var(--shadow-card);
        }

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

        .subscribe-text p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            align-items: center;
        }

        .subscribe-form input {
            min-width: 240px;
            padding: 10px 16px;
            background: var(--color-bg-primary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text-primary);
            font-size: 14px;
            transition: border-color var(--transition-fast);
        }

        .subscribe-form input:focus {
            border-color: var(--color-teal);
        }

        .article-disclaimer {
            margin-top: 40px;
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 16px;
        }

        .tag-item {
            padding: 6px 14px;
            border-radius: var(--radius-tag);
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            font-size: 13px;
            transition: border-color var(--transition-fast), color var(--transition-fast);
        }

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

        /* Footer */
        .site-footer {
            background: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border);
            padding: 48px 0 24px;
            margin-top: 60px;
        }

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

        .footer-brand .logo-text {
            font-size: 18px;
            margin-bottom: 12px;
            display: block;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin: 0;
        }

        .footer-col h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 14px;
        }

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

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

        .footer-col a {
            color: var(--color-text-muted);
            font-size: 14px;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            border-top: 1px solid var(--color-border);
            padding-top: 20px;
            font-size: 13px;
            color: var(--color-text-muted);
        }

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

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

        @media (max-width: 768px) {
            .header-inner {
                height: auto;
                min-height: 64px;
                flex-wrap: wrap;
                padding: 12px 0;
            }

            .menu-toggle {
                display: flex;
            }

            .main-nav {
                display: none;
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                background: var(--color-bg-secondary);
                border: 1px solid var(--color-border);
                border-radius: var(--radius-card);
                padding: 12px;
                order: 3;
                gap: 4px;
                box-shadow: var(--shadow-card);
            }

            .main-nav.open {
                display: flex;
                animation: fadeIn 0.2s ease;
            }

            .main-nav a {
                padding: 12px 16px;
                border-radius: var(--radius-btn);
            }

            .main-nav a.active::after {
                display: none;
            }

            .nav-right {
                margin-left: auto;
            }

            .search-trigger {
                padding: 8px 10px;
                font-size: 13px;
            }

            .article-page {
                padding: 24px 0 48px;
            }

            .article-header-card {
                padding: 24px 20px 20px;
            }

            .article-title {
                font-size: 26px;
            }

            .article-content {
                padding: 20px;
            }

            .article-content h2 {
                font-size: 21px;
            }

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

            .article-cover img {
                height: 220px;
            }

            .subscribe-card {
                flex-direction: column;
                align-items: stretch;
                text-align: left;
            }

            .subscribe-form input {
                min-width: 0;
                flex: 1;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .article-title {
                font-size: 23px;
            }

            .article-meta-row {
                gap: 10px;
                font-size: 13px;
            }

            .article-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn {
                width: 100%;
            }

            .search-trigger span {
                display: none;
            }
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-8px); }
            to { opacity: 1; transform: translateY(0); }
        }

/* roulang page: category1 */
:root {
            --color-bg-primary: #0C1220;
            --color-bg-secondary: #11182A;
            --color-bg-tertiary: #161E32;
            --color-accent: #FF9F43;
            --color-accent-hover: #FFB366;
            --color-accent-soft: rgba(255, 159, 67, 0.12);
            --color-teal: #2DD4BF;
            --color-up: #F04444;
            --color-down: #16B364;
            --color-flat: #9AA5B5;
            --color-text-primary: #F5F7FA;
            --color-text-secondary: #A7B0C1;
            --color-text-muted: #667085;
            --color-border: rgba(160, 174, 192, 0.18);
            --color-border-hover: rgba(160, 174, 192, 0.35);
            --radius-card: 14px;
            --radius-tag: 999px;
            --radius-btn: 8px;
            --shadow-card: 0 10px 24px rgba(0, 0, 0, 0.28);
            --shadow-hover: 0 16px 32px rgba(0, 0, 0, 0.38);
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --container-max: 1240px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", system-ui, -apple-system, sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--color-bg-primary);
            color: var(--color-text-primary);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-teal);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header & Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(12, 18, 32, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--color-accent);
            color: #0C1220;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .logo-text .highlight {
            color: var(--color-accent);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .main-nav a {
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast), background-color var(--transition-fast);
        }
        .main-nav a:hover {
            color: var(--color-text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .main-nav a.active {
            color: var(--color-accent);
            background: var(--color-accent-soft);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 2px;
            border-radius: 2px;
            background: var(--color-accent);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .search-trigger {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text-muted);
            font-size: 14px;
            transition: border-color var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast);
        }
        .search-trigger:hover {
            border-color: var(--color-border-hover);
            color: var(--color-text-secondary);
            background: rgba(255, 255, 255, 0.04);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--color-border);
            background: transparent;
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text-secondary);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-bg-primary);
            z-index: 99;
            padding: 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
            border-top: 1px solid var(--color-border);
        }
        .mobile-nav-panel.open {
            display: flex;
        }
        .mobile-nav-panel a {
            padding: 14px 16px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border: 1px solid transparent;
            transition: all var(--transition-fast);
        }
        .mobile-nav-panel a:hover {
            color: var(--color-text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .mobile-nav-panel a.active {
            color: var(--color-accent);
            background: var(--color-accent-soft);
            border-color: rgba(255, 159, 67, 0.25);
        }
        .mobile-search {
            padding: 12px 16px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            background: var(--color-bg-secondary);
            color: var(--color-text-primary);
            font-size: 15px;
            margin-bottom: 8px;
        }
        .mobile-search:focus {
            outline: 2px solid var(--color-teal);
            outline-offset: 2px;
            border-color: var(--color-teal);
        }
        /* Sections */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--color-bg-secondary);
        }
        .section-tight {
            padding: 56px 0;
        }
        .section-head {
            margin-bottom: 36px;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            max-width: 680px;
        }
        /* Breadcrumb */
        .breadcrumb-wrap {
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border);
            background: var(--color-bg-primary);
        }
        .breadcrumb-list {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb-list a {
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb-list a:hover {
            color: var(--color-accent);
        }
        .breadcrumb-list .sep {
            color: var(--color-text-muted);
            font-size: 12px;
        }
        .breadcrumb-list .current {
            color: var(--color-accent);
            font-weight: 500;
        }
        /* Hero for category */
        .category-hero {
            padding: 56px 0 40px;
            background: var(--color-bg-primary);
            border-bottom: 1px solid var(--color-border);
        }
        .category-hero h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 14px;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }
        .category-hero h1 .accent {
            color: var(--color-accent);
        }
        .category-hero p {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.7;
            margin-bottom: 0;
        }
        /* Filter bar */
        .filter-bar {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .filter-label {
            font-size: 14px;
            color: var(--color-text-muted);
            font-weight: 500;
            white-space: nowrap;
        }
        .filter-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-tag {
            padding: 6px 16px;
            border-radius: var(--radius-tag);
            border: 1px solid var(--color-border);
            font-size: 13px;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            background: transparent;
        }
        .filter-tag:hover {
            border-color: var(--color-border-hover);
            color: var(--color-text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .filter-tag.active {
            background: var(--color-accent-soft);
            border-color: rgba(255, 159, 67, 0.35);
            color: var(--color-accent);
            font-weight: 500;
        }
        .filter-search {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 8px;
            min-width: 240px;
        }
        .filter-search input {
            flex: 1;
            padding: 8px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            background: var(--color-bg-primary);
            color: var(--color-text-primary);
            font-size: 14px;
            transition: border-color var(--transition-fast);
        }
        .filter-search input:focus {
            border-color: var(--color-teal);
            outline: none;
        }
        .filter-search button {
            padding: 8px 16px;
            background: var(--color-accent);
            color: #0C1220;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            transition: background-color var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }
        .filter-search button:hover {
            background: var(--color-accent-hover);
        }
        .filter-search button:active {
            transform: scale(0.98);
        }
        /* Quote list */
        .quote-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .quote-row {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            transition: all var(--transition-base);
            flex-wrap: wrap;
        }
        .quote-row:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .quote-name {
            flex: 1 1 160px;
            min-width: 140px;
        }
        .quote-name .stock-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            display: block;
        }
        .quote-name .stock-code {
            font-size: 12px;
            color: var(--color-text-muted);
            font-family: var(--font-mono);
        }
        .quote-price {
            text-align: right;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-primary);
            font-family: var(--font-mono);
            white-space: nowrap;
            min-width: 80px;
        }
        .quote-change {
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 2px;
            font-family: var(--font-mono);
            font-size: 13px;
            white-space: nowrap;
            min-width: 72px;
        }
        .quote-change.up {
            color: var(--color-up);
        }
        .quote-change.down {
            color: var(--color-down);
        }
        .quote-change.flat {
            color: var(--color-flat);
        }
        .quote-badge {
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            font-size: 12px;
            font-weight: 600;
            white-space: nowrap;
        }
        .quote-badge.up {
            background: rgba(240, 68, 68, 0.12);
            color: var(--color-up);
        }
        .quote-badge.down {
            background: rgba(22, 179, 100, 0.12);
            color: var(--color-down);
        }
        .quote-badge.flat {
            background: rgba(154, 165, 181, 0.12);
            color: var(--color-flat);
        }
        .quote-time {
            font-size: 12px;
            color: var(--color-text-muted);
            white-space: nowrap;
        }
        .quote-link {
            padding: 6px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            font-size: 13px;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .quote-link:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: var(--color-accent-soft);
        }
        /* Index cards */
        .index-card-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .index-card {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            transition: all var(--transition-base);
        }
        .index-card:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .index-card .idx-name {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 6px;
        }
        .index-card .idx-value {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-primary);
            font-family: var(--font-mono);
            margin-bottom: 4px;
            letter-spacing: -0.01em;
        }
        .index-card .idx-change {
            font-size: 13px;
            font-family: var(--font-mono);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .index-card .idx-change.up {
            color: var(--color-up);
        }
        .index-card .idx-change.down {
            color: var(--color-down);
        }
        .index-card .idx-change.flat {
            color: var(--color-flat);
        }
        /* Chart placeholder */
        .chart-panel {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
        }
        .chart-panel .chart-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 18px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .chart-panel .chart-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-primary);
        }
        .chart-panel .chart-tabs {
            display: flex;
            gap: 6px;
        }
        .chart-panel .chart-tab {
            padding: 5px 14px;
            border-radius: var(--radius-tag);
            font-size: 13px;
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
        }
        .chart-panel .chart-tab:hover {
            border-color: var(--color-border-hover);
            color: var(--color-text-primary);
        }
        .chart-panel .chart-tab.active {
            background: var(--color-accent-soft);
            border-color: rgba(255, 159, 67, 0.35);
            color: var(--color-accent);
        }
        .chart-canvas {
            position: relative;
            border-radius: 10px;
            overflow: hidden;
            background: var(--color-bg-tertiary);
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .chart-canvas img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            opacity: 0.85;
        }
        .chart-overlay {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            font-weight: 500;
            z-index: 1;
            pointer-events: none;
            background: rgba(12, 18, 32, 0.35);
        }
        /* Info section */
        .info-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 28px;
        }
        .info-card {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 22px;
            transition: all var(--transition-base);
        }
        .info-card:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-card);
        }
        .info-card .info-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-accent-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            font-size: 18px;
        }
        .info-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 8px;
        }
        .info-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }
        /* Article list */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .article-card {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .article-card:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .article-card .article-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--color-bg-tertiary);
        }
        .article-card .article-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .article-card:hover .article-img img {
            transform: scale(1.05);
        }
        .article-card .article-body {
            padding: 18px 20px;
        }
        .article-card .article-cat {
            font-size: 12px;
            color: var(--color-accent);
            font-weight: 500;
            margin-bottom: 6px;
        }
        .article-card .article-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.5;
            min-height: 48px;
        }
        .article-card .article-summary {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .article-card .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-muted);
        }
        /* CTA */
        .cta-panel {
            background: var(--color-bg-secondary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-panel .cta-text {
            flex: 1 1 300px;
        }
        .cta-panel .cta-text h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 6px;
        }
        .cta-panel .cta-text p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 0;
        }
        .cta-panel .cta-form {
            display: flex;
            gap: 10px;
            flex: 1 1 320px;
            min-width: 260px;
        }
        .cta-panel .cta-form input {
            flex: 1;
            padding: 12px 16px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            background: var(--color-bg-primary);
            color: var(--color-text-primary);
            font-size: 14px;
            transition: border-color var(--transition-fast);
        }
        .cta-panel .cta-form input:focus {
            border-color: var(--color-teal);
            outline: none;
        }
        .cta-panel .cta-form button {
            padding: 12px 22px;
            background: var(--color-accent);
            color: #0C1220;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            transition: background-color var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }
        .cta-panel .cta-form button:hover {
            background: var(--color-accent-hover);
        }
        .cta-panel .cta-form button:active {
            transform: scale(0.98);
        }
        .cta-panel .view-more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            font-size: 14px;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .cta-panel .view-more-link:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: var(--color-accent-soft);
        }
        /* Footer */
        .site-footer {
            background: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border);
            padding: 56px 0 28px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 18px;
            margin-bottom: 12px;
            display: block;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            max-width: 320px;
            margin-bottom: 0;
        }
        .footer-col h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .footer-col ul a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border);
            font-size: 13px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        /* Empty state */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--color-text-muted);
            font-size: 15px;
            border: 1px dashed var(--color-border);
            border-radius: var(--radius-card);
            background: var(--color-bg-secondary);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .index-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .info-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .main-nav a {
                padding: 8px 10px;
                font-size: 14px;
            }
            .filter-search {
                min-width: 180px;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-right .search-trigger {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .header-inner {
                height: 64px;
            }
            .logo-text {
                font-size: 15px;
            }
            .category-hero h1 {
                font-size: 27px;
            }
            .section {
                padding: var(--spacing-section-mobile) 0;
            }
            .section-tight {
                padding: 40px 0;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .filter-search {
                width: 100%;
                margin-left: 0;
                min-width: auto;
            }
            .quote-row {
                padding: 14px;
                gap: 10px;
            }
            .quote-name {
                flex: 1 1 100%;
            }
            .chart-canvas,
            .chart-canvas img {
                min-height: 220px;
                height: 220px;
            }
            .info-grid {
                grid-template-columns: 1fr;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .cta-panel {
                flex-direction: column;
                align-items: stretch;
                padding: 24px;
            }
            .cta-panel .cta-form {
                flex-direction: column;
                min-width: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-hero h1 {
                font-size: 23px;
            }
            .index-card-grid {
                grid-template-columns: 1fr;
            }
            .quote-price {
                font-size: 14px;
                min-width: 60px;
            }
            .quote-change {
                font-size: 12px;
                min-width: 60px;
            }
            .quote-time {
                font-size: 11px;
            }
            .quote-link {
                padding: 4px 10px;
                font-size: 12px;
            }
        }

/* roulang page: category3 */
:root {
            --color-bg-primary: #0C1220;
            --color-bg-secondary: #11182A;
            --color-bg-tertiary: #161E32;
            --color-accent: #FF9F43;
            --color-accent-hover: #FFB366;
            --color-accent-soft: rgba(255, 159, 67, 0.12);
            --color-teal: #2DD4BF;
            --color-up: #F04444;
            --color-down: #16B364;
            --color-flat: #9AA5B5;
            --color-text-primary: #F5F7FA;
            --color-text-secondary: #A7B0C1;
            --color-text-muted: #667085;
            --color-border: rgba(160, 174, 192, 0.18);
            --color-border-hover: rgba(160, 174, 192, 0.35);
            --radius-card: 14px;
            --radius-tag: 999px;
            --radius-btn: 8px;
            --shadow-card: 0 10px 24px rgba(0, 0, 0, 0.28);
            --shadow-hover: 0 16px 32px rgba(0, 0, 0, 0.38);
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --container-max: 1240px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", system-ui, -apple-system, sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--color-bg-primary);
            color: var(--color-text-primary);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-teal);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(12, 18, 32, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--color-accent);
            color: #0C1220;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .logo-text .highlight {
            color: var(--color-accent);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .main-nav a {
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast), background-color var(--transition-fast);
        }
        .main-nav a:hover {
            color: var(--color-text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .main-nav a.active {
            color: var(--color-accent);
            background: var(--color-accent-soft);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 2px;
            border-radius: 2px;
            background: var(--color-accent);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .search-trigger {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text-muted);
            font-size: 14px;
            transition: border-color var(--transition-fast), color var(--transition-fast);
        }
        .search-trigger:hover {
            border-color: var(--color-border-hover);
            color: var(--color-text-secondary);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            background: transparent;
        }
        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-text-secondary);
            border-radius: 2px;
            transition: transform var(--transition-fast), opacity var(--transition-fast);
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: 72px;
            left: 0;
            right: 0;
            background: var(--color-bg-secondary);
            border-bottom: 1px solid var(--color-border);
            padding: 16px 24px 24px;
            z-index: 99;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-search {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text-muted);
            font-size: 14px;
            margin-bottom: 14px;
        }
        .mobile-nav a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: color var(--transition-fast), background-color var(--transition-fast);
        }
        .mobile-nav a:hover {
            color: var(--color-text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .mobile-nav a.active {
            color: var(--color-accent);
            background: var(--color-accent-soft);
        }
        section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .section-tight {
            padding: 56px 0;
        }
        .breadcrumb-wrap {
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border);
            background: var(--color-bg-secondary);
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb-nav a:hover {
            color: var(--color-accent);
        }
        .breadcrumb-nav .separator {
            color: var(--color-text-muted);
            font-size: 12px;
        }
        .breadcrumb-nav .current {
            color: var(--color-accent);
            font-weight: 500;
        }
        .page-hero {
            padding: 48px 0 32px;
            background: var(--color-bg-primary);
            border-bottom: 1px solid var(--color-border);
        }
        .page-hero h1 {
            font-size: 30px;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            line-height: 1.3;
            color: var(--color-text-primary);
        }
        .page-hero .subtitle {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.65;
        }
        .tool-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .tool-card {
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .tool-card:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .tool-card .tool-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-accent-soft);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .tool-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin: 0;
        }
        .tool-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.55;
        }
        .tool-card .tool-link {
            font-size: 13px;
            color: var(--color-accent);
            font-weight: 500;
            margin-top: auto;
        }
        .compare-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .compare-content h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .compare-content p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
        }
        .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border);
            font-size: 14px;
            color: var(--color-text-secondary);
        }
        .compare-list li .check {
            color: var(--color-teal);
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 1px;
        }
        .compare-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
            background: var(--color-bg-tertiary);
            min-height: 280px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .compare-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.9;
        }
        .steps-timeline {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .step-item {
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            position: relative;
            transition: border-color var(--transition-base), transform var(--transition-base);
        }
        .step-item:hover {
            border-color: var(--color-border-hover);
            transform: translateY(-2px);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #0C1220;
            font-weight: 700;
            font-size: 15px;
            margin-bottom: 12px;
        }
        .step-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.6;
        }
        .faq-list {
            max-width: 820px;
            margin: 32px auto 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            background: var(--color-bg-tertiary);
            overflow: hidden;
            transition: border-color var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-border-hover);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            cursor: pointer;
            gap: 12px;
            user-select: none;
        }
        .faq-question .faq-icon {
            color: var(--color-accent);
            font-size: 18px;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base);
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
        }
        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .article-list-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .article-card {
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .article-card:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .article-card h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin: 0;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card .article-excerpt {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
        }
        .article-card .article-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--color-text-muted);
            margin-top: auto;
        }
        .article-card .article-meta .tag {
            padding: 2px 10px;
            border-radius: var(--radius-tag);
            background: var(--color-accent-soft);
            color: var(--color-accent);
            font-size: 11px;
            font-weight: 500;
        }
        .cta-search-box {
            max-width: 640px;
            margin: 32px auto 0;
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-search-box input {
            flex: 1;
            min-width: 260px;
            padding: 12px 18px;
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text-primary);
            font-size: 15px;
            transition: border-color var(--transition-fast);
        }
        .cta-search-box input::placeholder {
            color: var(--color-text-muted);
        }
        .cta-search-box input:focus {
            border-color: var(--color-teal);
            outline: none;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            background: var(--color-accent);
            color: #0C1220;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            color: #0C1220;
            box-shadow: 0 4px 14px rgba(255, 159, 67, 0.35);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            background: transparent;
            color: var(--color-text-primary);
            border: 1px solid var(--color-border);
            font-weight: 500;
            font-size: 15px;
            border-radius: var(--radius-btn);
            transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: var(--color-accent-soft);
            border-color: var(--color-accent);
            color: var(--color-accent);
        }
        .section-head {
            margin-bottom: 24px;
        }
        .section-head h2 {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 10px;
        }
        .section-head p {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 680px;
            line-height: 1.65;
        }
        .section-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            background: var(--color-accent-soft);
            color: var(--color-accent);
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 10px;
        }
        .site-footer {
            background: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .logo-text {
            font-size: 16px;
            margin-bottom: 12px;
            display: inline-block;
        }
        .footer-brand p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.65;
            max-width: 320px;
            margin: 0;
        }
        .footer-col h3 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 18px;
            border-top: 1px solid var(--color-border);
            font-size: 12px;
            color: var(--color-text-muted);
        }
        @media (max-width: 1024px) {
            .tool-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-list-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-right .search-trigger {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            section {
                padding: var(--spacing-section-mobile) 0;
            }
            .compare-section {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .steps-timeline {
                grid-template-columns: 1fr;
            }
            .tool-grid {
                grid-template-columns: 1fr;
            }
            .article-list-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .page-hero h1 {
                font-size: 24px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .header-inner {
                height: 60px;
            }
            .logo-text {
                font-size: 14px;
            }
            .cta-search-box {
                flex-direction: column;
            }
            .cta-search-box input {
                min-width: 100%;
            }
            .page-hero h1 {
                font-size: 21px;
            }
        }

/* roulang page: category2 */
:root {
            --color-bg-primary: #0C1220;
            --color-bg-secondary: #11182A;
            --color-bg-tertiary: #161E32;
            --color-accent: #FF9F43;
            --color-accent-hover: #FFB366;
            --color-accent-soft: rgba(255, 159, 67, 0.12);
            --color-teal: #2DD4BF;
            --color-up: #F04444;
            --color-down: #16B364;
            --color-flat: #9AA5B5;
            --color-text-primary: #F5F7FA;
            --color-text-secondary: #A7B0C1;
            --color-text-muted: #667085;
            --color-border: rgba(160, 174, 192, 0.18);
            --color-border-hover: rgba(160, 174, 192, 0.35);
            --radius-card: 14px;
            --radius-tag: 999px;
            --radius-btn: 8px;
            --shadow-card: 0 10px 24px rgba(0, 0, 0, 0.28);
            --shadow-hover: 0 16px 32px rgba(0, 0, 0, 0.38);
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --container-max: 1240px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", system-ui, -apple-system, sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--color-bg-primary);
            color: var(--color-text-primary);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-teal);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(12, 18, 32, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--color-accent);
            color: #0C1220;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .logo-text .highlight {
            color: var(--color-accent);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .main-nav a {
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast), background-color var(--transition-fast);
        }
        .main-nav a:hover {
            color: var(--color-text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .main-nav a.active {
            color: var(--color-accent);
            background: var(--color-accent-soft);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 2px;
            border-radius: 2px;
            background: var(--color-accent);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .search-trigger {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text-muted);
            font-size: 14px;
            transition: border-color var(--transition-fast), color var(--transition-fast);
            background: transparent;
        }
        .search-trigger:hover {
            border-color: var(--color-border-hover);
            color: var(--color-text-secondary);
        }
        .nav-cta {
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            background: var(--color-accent);
            color: #0C1220;
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            transition: background-color var(--transition-fast), transform var(--transition-fast);
        }
        .nav-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            width: 36px;
            height: 36px;
            gap: 5px;
            border-radius: 8px;
            border: 1px solid var(--color-border);
            background: transparent;
        }
        .menu-toggle span {
            display: block;
            height: 2px;
            width: 18px;
            background: var(--color-text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
            margin: 0 auto;
        }
        /* ===== Breadcrumb & Page Header ===== */
        .page-header-section {
            padding: 40px 0 32px;
            background: var(--color-bg-primary);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-muted);
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .separator {
            opacity: 0.5;
        }
        .page-header-content {
            max-width: 820px;
        }
        .page-header-content h1 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin: 0 0 12px;
            color: var(--color-text-primary);
        }
        .page-header-content .subhead {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        /* ===== Section Base ===== */
        .section {
            padding: var(--spacing-section-mobile) 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: var(--spacing-section) 0;
            }
        }
        .section-alt {
            background: var(--color-bg-secondary);
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            color: var(--color-text-primary);
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
        }
        /* ===== Cards & Data Panels ===== */
        .card-data {
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .card-data:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-border-hover);
        }
        .stat-card {
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .stat-label {
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .stat-value {
            font-size: 24px;
            font-weight: 700;
            font-family: var(--font-mono);
            letter-spacing: -0.02em;
        }
        .stat-change {
            font-size: 14px;
            font-weight: 600;
            font-family: var(--font-mono);
        }
        .stat-change.up {
            color: var(--color-up);
        }
        .stat-change.down {
            color: var(--color-down);
        }
        .stat-change.flat {
            color: var(--color-flat);
        }
        .tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: var(--radius-tag);
            font-size: 12px;
            font-weight: 600;
            line-height: 1.4;
        }
        .tag-up {
            background: rgba(240, 68, 68, 0.12);
            color: var(--color-up);
        }
        .tag-down {
            background: rgba(22, 179, 100, 0.12);
            color: var(--color-down);
        }
        .tag-flat {
            background: rgba(154, 165, 181, 0.12);
            color: var(--color-flat);
        }
        .tag-accent {
            background: var(--color-accent-soft);
            color: var(--color-accent);
        }
        /* ===== Heatmap Section ===== */
        .heatmap-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 24px;
        }
        @media (min-width: 640px) {
            .heatmap-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (min-width: 992px) {
            .heatmap-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .heatmap-item {
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            transition: border-color var(--transition-fast);
        }
        .heatmap-item:hover {
            border-color: var(--color-border-hover);
        }
        .heatmap-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-primary);
        }
        .heatmap-change {
            font-size: 20px;
            font-weight: 700;
            font-family: var(--font-mono);
        }
        .heatmap-bar {
            height: 6px;
            border-radius: 3px;
            background: rgba(255,255,255,0.06);
            overflow: hidden;
        }
        .heatmap-bar-inner {
            height: 100%;
            border-radius: 3px;
            background: var(--color-up);
        }
        .heatmap-bar-inner.down {
            background: var(--color-down);
        }
        /* ===== Ranking Table ===== */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .rank-row {
            display: grid;
            grid-template-columns: 40px 1fr 80px 80px 60px;
            align-items: center;
            gap: 8px;
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 12px 16px;
            transition: transform var(--transition-fast), border-color var(--transition-fast);
        }
        .rank-row:hover {
            transform: translateX(4px);
            border-color: var(--color-border-hover);
        }
        .rank-num {
            font-family: var(--font-mono);
            font-weight: 700;
            color: var(--color-text-muted);
        }
        .rank-num.top3 {
            color: var(--color-accent);
        }
        .rank-name {
            font-weight: 600;
            color: var(--color-text-primary);
        }
        .rank-value,
        .rank-change,
        .rank-volume {
            font-family: var(--font-mono);
            font-size: 14px;
            text-align: right;
        }
        .rank-change.up {
            color: var(--color-up);
        }
        .rank-change.down {
            color: var(--color-down);
        }
        .rank-volume {
            color: var(--color-text-muted);
        }
        .tabs {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }
        .tab-btn {
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            font-weight: 500;
            font-size: 14px;
            transition: all var(--transition-fast);
        }
        .tab-btn.active,
        .tab-btn:hover {
            background: var(--color-accent-soft);
            border-color: var(--color-accent);
            color: var(--color-accent);
        }
        /* ===== Fund Flow ===== */
        .fund-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        @media (min-width: 768px) {
            .fund-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        .fund-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .fund-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 14px 16px;
        }
        .fund-item .name {
            font-weight: 600;
        }
        .fund-item .value {
            font-family: var(--font-mono);
            font-weight: 700;
        }
        .fund-item .value.inflow {
            color: var(--color-up);
        }
        .fund-item .value.outflow {
            color: var(--color-down);
        }
        .fund-image-wrap {
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            min-height: 240px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .fund-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        /* ===== Rule / Info Panel ===== */
        .info-panel {
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
        }
        .info-panel h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .info-panel p,
        .info-panel li {
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        .info-panel ul {
            padding-left: 20px;
            margin-bottom: 12px;
        }
        /* ===== Related Articles ===== */
        .article-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 640px) {
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 992px) {
            .article-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .article-card {
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-border-hover);
        }
        .article-thumb {
            height: 160px;
            background-size: cover;
            background-position: center;
        }
        .article-body {
            padding: 16px 18px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }
        .article-category {
            font-size: 12px;
            color: var(--color-accent);
            font-weight: 600;
        }
        .article-title {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--color-text-primary);
        }
        .article-summary {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-time {
            font-size: 12px;
            color: var(--color-text-muted);
            margin-top: auto;
        }
        .article-empty {
            text-align: center;
            padding: 40px;
            color: var(--color-text-muted);
            background: var(--color-bg-tertiary);
            border: 1px dashed var(--color-border);
            border-radius: var(--radius-card);
        }
        .more-link {
            display: inline-block;
            margin-top: 24px;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            background: var(--color-accent-soft);
            color: var(--color-accent);
            font-weight: 600;
            font-size: 14px;
            transition: background-color var(--transition-fast), color var(--transition-fast);
        }
        .more-link:hover {
            background: var(--color-accent);
            color: #0C1220;
        }
        /* ===== CTA / Subscribe ===== */
        .cta-panel {
            background: var(--color-bg-tertiary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            text-align: center;
        }
        .cta-panel h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-panel p {
            color: var(--color-text-secondary);
            margin-bottom: 24px;
        }
        .subscribe-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
        }
        @media (min-width: 640px) {
            .subscribe-form {
                flex-direction: row;
            }
        }
        .subscribe-input {
            flex: 1;
            padding: 12px 16px;
            background: var(--color-bg-primary);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text-primary);
            font-size: 15px;
        }
        .subscribe-input::placeholder {
            color: var(--color-text-muted);
        }
        .subscribe-input:focus {
            border-color: var(--color-teal);
            outline: none;
        }
        .subscribe-btn {
            padding: 12px 24px;
            background: var(--color-accent);
            color: #0C1220;
            font-weight: 600;
            border-radius: var(--radius-btn);
            font-size: 15px;
            transition: background-color var(--transition-fast), transform var(--transition-fast);
        }
        .subscribe-btn:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 992px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
        }
        .footer-brand p {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.7;
            margin-top: 12px;
        }
        .footer-col h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--color-text-primary);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: var(--color-text-muted);
            font-size: 14px;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        @media (min-width: 640px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
            }
        }
        /* ===== Mobile Menu ===== */
        @media (max-width: 1023px) {
            .main-nav {
                display: none;
                flex-direction: column;
                align-items: stretch;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--color-bg-primary);
                border-bottom: 1px solid var(--color-border);
                padding: 16px 24px;
                gap: 4px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                border-radius: var(--radius-btn);
            }
            .main-nav a.active::after {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
        }
        @media (min-width: 1024px) {
            .menu-toggle {
                display: none;
            }
        }
        /* Additional utility */
        .text-accent {
            color: var(--color-accent);
        }
        .text-muted {
            color: var(--color-text-muted);
        }
        .bg-section-image {
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .bg-section-image::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(12,18,32,0.75);
        }
        .bg-section-image > .container {
            position: relative;
            z-index: 1;
        }