/* roulang page: index */
:root {
            --color-primary: #0E3B36;
            --color-primary-hover: #123F3A;
            --color-accent: #D97745;
            --color-accent-dark: #B95F2F;
            --color-bg: #F4F1EA;
            --color-card: #FFFFFF;
            --color-card-sub: #FBF8F2;
            --color-text: #1E2624;
            --color-text-muted: #5C6863;
            --color-border: #D9D2C5;
            --color-danger: #B23B3B;
            --color-safe: #2F7D5D;
            --color-tag-bg: #F0E6D8;
            --color-link: #B95F2F;
            --color-footer-text: #E8E2D8;
            --color-footer-link: #9DB8B0;
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-tag: 999px;
            --shadow-card: 0 2px 10px rgba(14, 59, 54, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(14, 59, 54, 0.12);
            --font-heading: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", sans-serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-numeric: "DIN Alternate", "Roboto Mono", monospace;
            --section-padding-desktop: 72px 24px;
            --section-padding-mobile: 40px 16px;
            --container-max: 1170px;
            --transition-base: 0.2s ease;
        }

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

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

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

        h1, h2, h3, h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-text);
        }

        h1 {
            font-size: clamp(28px, 4vw, 40px);
            margin-bottom: 16px;
        }

        h2 {
            font-size: clamp(24px, 3vw, 30px);
        }

        h3 {
            font-size: clamp(18px, 2vw, 21px);
        }

        p {
            margin-bottom: 12px;
            color: var(--color-text-muted);
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

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

        ul, ol {
            list-style: none;
        }

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

        input, select, textarea {
            font-family: inherit;
            font-size: 16px;
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: var(--color-primary);
            min-height: 68px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            text-decoration: none;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .site-logo .logo-icon {
            width: 34px;
            height: 34px;
            background-color: var(--color-accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }

        .site-logo:hover {
            color: #FFFFFF;
            text-decoration: none;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-menu a {
            display: block;
            padding: 8px 16px;
            color: #D8E2DE;
            font-size: 15px;
            font-weight: 500;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .nav-menu a:hover {
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.08);
            text-decoration: none;
        }

        .nav-menu a.active {
            color: #FFFFFF;
            background-color: rgba(217, 119, 69, 0.28);
            font-weight: 600;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 8px;
            flex-direction: column;
            gap: 5px;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: #FFFFFF;
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        @media (max-width: 1024px) {
            .nav-menu a {
                padding: 8px 12px;
                font-size: 14px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }

            .nav-menu {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                flex-direction: column;
                background-color: var(--color-primary);
                padding: 16px;
                gap: 4px;
                box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
                border-top: 1px solid rgba(255, 255, 255, 0.08);
            }

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

            .nav-menu a {
                padding: 14px 16px;
                font-size: 16px;
                border-radius: 8px;
            }
        }

        /* ===== Ticker ===== */
        .ticker-bar {
            background-color: var(--color-primary-hover);
            color: #D8E2DE;
            overflow: hidden;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 10px 0;
        }

        .ticker-track {
            display: flex;
            gap: 48px;
            white-space: nowrap;
            animation: ticker-scroll 32s linear infinite;
        }

        .ticker-track span {
            font-size: 13px;
            letter-spacing: 0.2px;
            color: #C8D6D1;
        }

        .ticker-track span .dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            background-color: var(--color-accent);
            border-radius: 50%;
            margin-right: 8px;
            vertical-align: middle;
        }

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

        @media (max-width: 640px) {
            .ticker-track {
                gap: 32px;
                animation-duration: 24s;
            }
            .ticker-track span {
                font-size: 12px;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background-image: linear-gradient(rgba(14, 59, 54, 0.86), rgba(14, 59, 54, 0.92)), url('/assets/images/20ec8c4207226814.webp');
            background-size: cover;
            background-position: center;
            color: #FFFFFF;
            padding: 80px 24px 96px;
            text-align: center;
            border-bottom: 4px solid var(--color-accent);
        }

        .hero .hero-tag {
            display: inline-block;
            background-color: rgba(217, 119, 69, 0.22);
            color: #F5D3BC;
            font-size: 13px;
            font-weight: 500;
            padding: 6px 18px;
            border-radius: var(--radius-tag);
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            border: 1px solid rgba(217, 119, 69, 0.4);
        }

        .hero h1 {
            color: #FFFFFF;
            font-size: clamp(28px, 4.5vw, 42px);
            margin-bottom: 20px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.4;
        }

        .hero h1 .highlight {
            color: var(--color-accent);
            text-decoration: underline;
            text-decoration-color: rgba(217, 119, 69, 0.6);
            text-underline-offset: 6px;
        }

        .hero .hero-sub {
            font-size: 17px;
            line-height: 1.8;
            color: #D8E2DE;
            max-width: 640px;
            margin: 0 auto 32px;
            font-weight: 400;
        }

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

        .hero .hero-visual {
            max-width: 720px;
            margin: 48px auto 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .hero .hero-visual img {
            width: 100%;
            height: auto;
        }

        @media (max-width: 768px) {
            .hero {
                padding: 48px 16px 64px;
            }
            .hero .hero-sub {
                font-size: 15px;
            }
            .hero .hero-actions {
                flex-direction: column;
                gap: 12px;
            }
            .hero .hero-visual {
                margin-top: 32px;
                border-radius: 12px;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: all var(--transition-base);
            letter-spacing: 0.3px;
            line-height: 1.2;
        }

        .btn-primary {
            background-color: var(--color-accent);
            color: #FFFFFF;
            border: none;
        }

        .btn-primary:hover {
            background-color: var(--color-primary);
            color: #FFFFFF;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(217, 119, 69, 0.3);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }

        .btn-secondary:hover {
            background-color: rgba(14, 59, 54, 0.06);
            text-decoration: none;
            transform: translateY(-1px);
        }

        .btn-outline-light {
            background-color: transparent;
            color: #FFFFFF;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }

        .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.1);
            text-decoration: none;
            border-color: #FFFFFF;
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }

        .btn-full {
            width: 100%;
        }

        @media (max-width: 640px) {
            .btn {
                padding: 12px 20px;
                font-size: 15px;
                width: 100%;
            }
        }

        /* ===== Sections ===== */
        section {
            padding: var(--section-padding-desktop);
        }

        section:nth-of-type(even) {
            background-color: #FFFFFF;
        }

        section:nth-of-type(odd) {
            background-color: var(--color-bg);
        }

        @media (max-width: 768px) {
            section {
                padding: var(--section-padding-mobile);
            }
        }

        .section-heading {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-heading h2 {
            font-size: clamp(24px, 3vw, 30px);
            margin-bottom: 12px;
        }

        .section-heading p {
            max-width: 600px;
            margin: 0 auto;
            font-size: 15px;
            color: var(--color-text-muted);
        }

        .section-heading.left {
            text-align: left;
        }

        .section-heading.left p {
            margin: 0;
        }

        /* ===== Data Strip ===== */
        .data-strip {
            background-color: var(--color-primary);
            padding: 40px 24px;
        }

        .data-strip .container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .data-item {
            text-align: center;
            color: #FFFFFF;
        }

        .data-item .data-number {
            font-family: var(--font-numeric);
            font-size: 36px;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: 1px;
            line-height: 1.2;
        }

        .data-item .data-label {
            font-size: 14px;
            color: #C8D6D1;
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .data-strip .container {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .data-item .data-number {
                font-size: 28px;
            }
        }

        @media (max-width: 480px) {
            .data-strip .container {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .data-item .data-number {
                font-size: 24px;
            }
        }

        /* ===== Ranking Entry ===== */
        .ranking-entry {
            background-color: #FFFFFF;
        }

        .ranking-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .ranking-card-main {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .ranking-card-main::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background-color: var(--color-accent);
        }

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

        .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background-color: var(--color-accent);
            color: #FFFFFF;
            font-family: var(--font-numeric);
            font-size: 18px;
            font-weight: 700;
            border-radius: 8px;
            margin-bottom: 14px;
        }

        .rank-badge.alt {
            background-color: var(--color-primary);
        }

        .ranking-summary-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .ranking-summary-item {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: 10px;
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 16px;
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .ranking-summary-item:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
            transform: translateX(4px);
        }

        .ranking-summary-item .mini-rank {
            font-family: var(--font-numeric);
            font-weight: 700;
            font-size: 20px;
            color: var(--color-accent-dark);
            min-width: 30px;
        }

        .ranking-summary-item .info {
            flex: 1;
        }

        .ranking-summary-item .info h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 2px;
        }

        .ranking-summary-item .info p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0;
        }

        .tag {
            display: inline-block;
            background-color: var(--color-tag-bg);
            color: var(--color-text);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            letter-spacing: 0.2px;
            white-space: nowrap;
        }

        .tag-safe {
            background-color: rgba(47, 125, 93, 0.12);
            color: var(--color-safe);
        }

        .tag-warn {
            background-color: rgba(178, 59, 59, 0.1);
            color: var(--color-danger);
        }

        .score-display {
            font-family: var(--font-numeric);
            font-size: 28px;
            font-weight: 700;
            color: var(--color-accent-dark);
        }

        @media (max-width: 768px) {
            .ranking-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== Category Grid ===== */
        .category-grid {
            background-color: var(--color-bg);
        }

        .category-tiles {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .category-tile {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            text-decoration: none;
            color: var(--color-text);
        }

        .category-tile:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-accent);
            text-decoration: none;
        }

        .category-tile .tile-icon {
            width: 44px;
            height: 44px;
            background-color: var(--color-primary);
            color: #FFFFFF;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            font-family: var(--font-numeric);
        }

        .category-tile h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 0;
        }

        .category-tile p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .category-tiles {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .category-tiles {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ===== Dimensions ===== */
        .dimensions {
            background-color: #FFFFFF;
        }

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

        .dimension-card {
            background-color: var(--color-card-sub);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            text-align: center;
            transition: all var(--transition-base);
        }

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

        .dimension-card .dim-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 14px;
            border-radius: 50%;
            background-color: var(--color-primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-family: var(--font-numeric);
            font-weight: 700;
        }

        .dimension-card h3 {
            font-size: 17px;
            margin-bottom: 8px;
        }

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

        @media (max-width: 768px) {
            .dimension-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ===== Cost Compare ===== */
        .cost-compare {
            background-color: var(--color-bg);
        }

        .cost-compare-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .cost-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            position: relative;
            transition: all var(--transition-base);
        }

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

        .cost-card.featured {
            border: 2px solid var(--color-accent);
        }

        .cost-card .featured-label {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--color-accent);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: var(--radius-tag);
            white-space: nowrap;
        }

        .cost-card .leverage-num {
            font-family: var(--font-numeric);
            font-size: 36px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
        }

        .cost-card h3 {
            font-size: 17px;
            margin-bottom: 14px;
        }

        .cost-card ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .cost-card ul li {
            font-size: 14px;
            color: var(--color-text-muted);
            padding-left: 20px;
            position: relative;
            line-height: 1.6;
        }

        .cost-card ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 10px;
            width: 8px;
            height: 8px;
            background-color: var(--color-accent);
            border-radius: 50%;
        }

        @media (max-width: 768px) {
            .cost-compare-cards {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== News Cards ===== */
        .news-cards {
            background-color: #FFFFFF;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

        .news-card .card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
            background-color: #E8E4DC;
        }

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

        .news-card .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .news-card .card-body h3 {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
        }

        .news-card .card-body .meta {
            font-size: 13px;
            color: var(--color-text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .news-card .card-body p.summary {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            flex: 1;
            margin: 0;
        }

        .news-card .card-body .read-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-link);
            text-decoration: none;
            align-self: flex-start;
        }

        .news-card .card-body .read-more:hover {
            color: var(--color-primary);
            text-decoration: underline;
        }

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

        @media (max-width: 640px) {
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-card .card-img {
                height: 160px;
            }
        }

        /* ===== Risk Warning ===== */
        .risk-warning {
            background-color: var(--color-primary);
            padding: 48px 24px;
        }

        .risk-warning .container {
            max-width: 900px;
        }

        .risk-panel {
            background-color: rgba(255, 255, 255, 0.05);
            border-left: 4px solid var(--color-danger);
            border-radius: 10px;
            padding: 28px 32px;
        }

        .risk-panel h2 {
            color: #FFFFFF;
            font-size: 22px;
            margin-bottom: 18px;
        }

        .risk-panel ul {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .risk-panel ul li {
            color: #D8E2DE;
            font-size: 15px;
            padding-left: 22px;
            position: relative;
            line-height: 1.7;
        }

        .risk-panel ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 10px;
            width: 8px;
            height: 8px;
            background-color: var(--color-danger);
            border-radius: 50%;
        }

        @media (max-width: 640px) {
            .risk-panel {
                padding: 20px;
            }
            .risk-panel h2 {
                font-size: 18px;
            }
            .risk-panel ul li {
                font-size: 14px;
            }
        }

        /* ===== Verification Cases ===== */
        .verification-cases {
            background-color: var(--color-bg);
        }

        .verification-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .verification-content h3 {
            font-size: 22px;
            margin-bottom: 16px;
        }

        .verification-content p {
            color: var(--color-text-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        .verification-image img {
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            width: 100%;
            height: auto;
        }

        @media (max-width: 768px) {
            .verification-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== Testimonials ===== */
        .testimonials {
            background-color: #FFFFFF;
        }

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

        .testimonial-card {
            background-color: var(--color-card-sub);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: all var(--transition-base);
        }

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

        .testimonial-card .quote {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-text);
            margin-bottom: 16px;
        }

        .testimonial-card .author {
            font-size: 13px;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background-color: var(--color-bg);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item.open {
            background-color: #FAF7F1;
            border-color: var(--color-accent);
        }

        .faq-item .faq-question {
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            user-select: none;
            gap: 16px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-item .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            background-color: var(--color-primary);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            transition: transform var(--transition-base);
            font-weight: 400;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background-color: var(--color-accent);
        }

        .faq-item .faq-answer {
            display: none;
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== Tips Cards ===== */
        .tips-cards {
            background-color: #FFFFFF;
        }

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

        .tip-card {
            background-color: var(--color-card-sub);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

        .tip-card .tip-img {
            height: 160px;
            overflow: hidden;
        }

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

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

        .tip-card .tip-body h3 {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
        }

        .tip-card .tip-body p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.7;
            flex: 1;
        }

        .tip-card .tip-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-link);
            text-decoration: none;
        }

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

        @media (max-width: 640px) {
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .tip-card .tip-img {
                height: 140px;
            }
        }

        /* ===== Research Note ===== */
        .research-note {
            background-color: var(--color-bg);
        }

        .research-content {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }

        .research-content h2 {
            margin-bottom: 16px;
        }

        .research-content p {
            color: var(--color-text-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ===== Consult Form ===== */
        .consult-form {
            background-color: var(--color-primary);
            padding: 64px 24px;
        }

        .consult-form .container {
            max-width: 720px;
        }

        .consult-box {
            background-color: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-card);
            padding: 40px;
        }

        .consult-box h2 {
            color: #FFFFFF;
            text-align: center;
            margin-bottom: 8px;
            font-size: 24px;
        }

        .consult-box .form-sub {
            text-align: center;
            color: #C8D6D1;
            font-size: 14px;
            margin-bottom: 28px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-bottom: 20px;
        }

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

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

        .form-field label {
            font-size: 13px;
            font-weight: 500;
            color: #C8D6D1;
            letter-spacing: 0.2px;
        }

        .form-field input,
        .form-field select,
        .form-field textarea {
            height: 48px;
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            padding: 0 16px;
            font-size: 15px;
            color: var(--color-text);
            transition: border-color var(--transition-base);
            width: 100%;
        }

        .form-field textarea {
            height: auto;
            min-height: 100px;
            padding: 12px 16px;
            resize: vertical;
        }

        .form-field input:focus,
        .form-field select:focus,
        .form-field textarea:focus {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 2px rgba(217, 119, 69, 0.2);
        }

        .form-submit {
            margin-top: 8px;
        }

        @media (max-width: 640px) {
            .consult-box {
                padding: 24px 18px;
            }
            .form-row {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .consult-box h2 {
                font-size: 20px;
            }
        }

        /* ===== Partners ===== */
        .partners {
            background-color: #FFFFFF;
            text-align: center;
            padding: 40px 24px;
        }

        .partners h3 {
            font-size: 15px;
            color: var(--color-text-muted);
            font-weight: 500;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .partner-logos {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px 40px;
            align-items: center;
        }

        .partner-logos span {
            font-size: 16px;
            font-weight: 600;
            color: #A8A29A;
            letter-spacing: 1px;
            white-space: nowrap;
        }

        @media (max-width: 640px) {
            .partner-logos {
                gap: 16px 24px;
            }
            .partner-logos span {
                font-size: 14px;
            }
        }

        /* ===== Tag Cloud ===== */
        .tag-cloud {
            background-color: var(--color-bg);
        }

        .tags-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            max-width: 800px;
            margin: 0 auto;
        }

        .tags-wrapper a {
            display: inline-block;
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-tag);
            padding: 7px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-muted);
            text-decoration: none;
            transition: all var(--transition-base);
        }

        .tags-wrapper a:hover {
            border-color: var(--color-accent);
            color: var(--color-accent-dark);
            text-decoration: none;
            background-color: var(--color-tag-bg);
        }

        /* ===== Footer ===== */
        .site-footer {
            background-color: var(--color-primary);
            padding: 48px 24px 20px;
            color: var(--color-footer-text);
        }

        .site-footer .container {
            max-width: var(--container-max);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            color: #FFFFFF;
            font-size: 16px;
            margin-bottom: 14px;
            font-weight: 600;
        }

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

        .footer-col ul a {
            color: var(--color-footer-link);
            font-size: 14px;
            text-decoration: none;
            transition: color var(--transition-base);
        }

        .footer-col ul a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }

        .footer-col p {
            color: #B0C0BA;
            font-size: 13px;
            line-height: 1.7;
            margin-bottom: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #9DB8B0;
        }

        .footer-bottom .copyright {
            margin-bottom: 8px;
        }

        .footer-bottom .disclaimer {
            font-size: 12px;
            color: #7A968D;
            line-height: 1.7;
        }

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

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }

        .mt-16 {
            margin-top: 16px;
        }

        .mb-0 {
            margin-bottom: 0;
        }

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

/* roulang page: article */
:root {
            --color-primary: #0E3B36;
            --color-primary-hover: #123F3A;
            --color-accent: #D97745;
            --color-accent-dark: #B95F2F;
            --color-bg: #F4F1EA;
            --color-card: #FFFFFF;
            --color-card-sub: #FBF8F2;
            --color-text: #1E2624;
            --color-text-muted: #5C6863;
            --color-border: #D9D2C5;
            --color-danger: #B23B3B;
            --color-safe: #2F7D5D;
            --color-tag-bg: #F0E6D8;
            --color-link: #B95F2F;
            --color-footer-text: #E8E2D8;
            --color-footer-link: #9DB8B0;
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-tag: 999px;
            --shadow-card: 0 2px 10px rgba(14, 59, 54, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(14, 59, 54, 0.12);
            --font-heading: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", sans-serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-numeric: "DIN Alternate", "Roboto Mono", monospace;
            --section-padding-desktop: 72px 24px;
            --section-padding-mobile: 40px 16px;
            --container-max: 1170px;
            --transition-base: 0.2s ease;
        }

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

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

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

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

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

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

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 16px;
        }

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

        .section {
            padding: var(--section-padding-desktop);
            background-color: var(--color-card);
            border-bottom: 1px solid var(--color-border);
        }

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

        .section-title {
            font-family: var(--font-heading);
            font-size: 28px;
            line-height: 1.4;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-muted);
            max-width: 760px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            background-color: var(--color-accent);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 16px;
            border-radius: var(--radius-btn);
            border: none;
            transition: background-color var(--transition-base), transform var(--transition-base);
            text-decoration: none;
            min-height: 48px;
        }

        .btn-primary-custom:hover {
            background-color: var(--color-primary);
            color: #FFFFFF;
            text-decoration: none;
            transform: translateY(-2px);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            background-color: transparent;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 16px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--color-primary);
            transition: all var(--transition-base);
            text-decoration: none;
            min-height: 48px;
        }

        .btn-outline-custom:hover {
            background-color: rgba(14, 59, 54, 0.08);
            color: var(--color-primary);
            text-decoration: none;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            background-color: var(--color-tag-bg);
            color: var(--color-primary);
            border-radius: var(--radius-tag);
            font-size: 13px;
            font-weight: 500;
            line-height: 1.6;
            white-space: nowrap;
        }

        .text-danger {
            color: var(--color-danger) !important;
        }

        .text-safe {
            color: var(--color-safe) !important;
        }

        .text-muted {
            color: var(--color-text-muted) !important;
        }

        .bg-primary-dark {
            background-color: var(--color-primary);
            color: #FFFFFF;
        }

        .card-shadow {
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            background-color: var(--color-card);
        }

        .card-shadow:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: var(--color-primary);
            min-height: 68px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            text-decoration: none;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .site-logo .logo-icon {
            width: 34px;
            height: 34px;
            background-color: var(--color-accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }

        .site-logo:hover {
            color: #FFFFFF;
            text-decoration: none;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-menu a {
            display: block;
            padding: 8px 16px;
            color: #D8E2DE;
            font-size: 15px;
            font-weight: 500;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .nav-menu a:hover {
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.08);
            text-decoration: none;
        }

        .nav-menu a.active {
            color: #FFFFFF;
            background-color: rgba(217, 119, 69, 0.28);
            font-weight: 600;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 8px;
            flex-direction: column;
            gap: 5px;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: #FFFFFF;
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Article hero */
        .article-hero {
            background-color: var(--color-primary);
            color: #FFFFFF;
            padding: 40px 24px;
            border-bottom: 4px solid var(--color-accent);
        }

        .article-hero .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: #C9D8D3;
            margin-bottom: 12px;
            flex-wrap: wrap;
        }

        .article-hero .breadcrumb-custom a {
            color: #E8E2D8;
            text-decoration: none;
        }

        .article-hero .breadcrumb-custom a:hover {
            color: #FFFFFF;
            text-decoration: underline;
        }

        .article-hero h1 {
            font-family: var(--font-heading);
            font-size: 34px;
            line-height: 1.4;
            font-weight: 700;
            margin-bottom: 16px;
            max-width: 900px;
            color: #FFFFFF;
        }

        .article-meta-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            font-size: 14px;
            color: #D8E2DE;
            margin-top: 8px;
        }

        .article-meta-tags .tag {
            background-color: rgba(240, 230, 216, 0.16);
            color: #F4F1EA;
        }

        /* Article body */
        .article-body {
            max-width: 860px;
            margin: 0 auto;
            padding: 32px 16px 56px;
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-text);
        }

        .article-body h2 {
            font-family: var(--font-heading);
            font-size: 24px;
            line-height: 1.5;
            font-weight: 700;
            color: var(--color-primary);
            margin: 32px 0 16px;
            padding-left: 12px;
            border-left: 4px solid var(--color-accent);
        }

        .article-body h3 {
            font-family: var(--font-heading);
            font-size: 18px;
            line-height: 1.6;
            font-weight: 700;
            color: var(--color-primary);
            margin: 24px 0 12px;
        }

        .article-body p {
            margin-bottom: 16px;
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-text);
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 16px 20px;
            padding-left: 16px;
            color: var(--color-text);
        }

        .article-body li {
            margin-bottom: 8px;
            line-height: 1.8;
        }

        .article-body blockquote {
            background-color: var(--color-card-sub);
            border-left: 4px solid var(--color-accent);
            padding: 16px 20px;
            border-radius: 0 var(--radius-card) var(--radius-card) 0;
            color: var(--color-primary);
            font-weight: 500;
            margin: 24px 0;
            font-size: 16px;
            line-height: 1.8;
        }

        .article-body .risk-box {
            background-color: #FFF7F5;
            border: 1px solid #E9C5BC;
            border-left: 4px solid var(--color-danger);
            padding: 16px 20px;
            border-radius: 0 var(--radius-card) var(--radius-card) 0;
            color: #7B3A2E;
            font-size: 14px;
            line-height: 1.8;
            margin: 24px 0;
        }

        .article-body .article-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            margin: 24px 0;
            background-color: var(--color-tag-bg);
        }

        .article-body .article-image img {
            width: 100%;
            height: auto;
        }

        .article-body .data-table-wrap {
            overflow-x: auto;
            margin: 24px 0;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            background-color: var(--color-card);
        }

        .article-body table {
            width: 100%;
            min-width: 560px;
            border-collapse: collapse;
            font-size: 14px;
            color: var(--color-text);
            background-color: var(--color-card);
        }

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

        .article-body table th {
            background-color: var(--color-primary);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
        }

        .article-body table tr:last-child td {
            border-bottom: none;
        }

        .article-body table tr:hover td {
            background-color: #FAF7F1;
        }

        /* Recommendation cards */
        .recommend-section {
            background-color: var(--color-bg);
            padding: var(--section-padding-desktop);
        }

        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 24px;
        }

        .recommend-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }

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

        .recommend-card .recommend-title {
            font-family: var(--font-heading);
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .recommend-card .recommend-desc {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .recommend-card .recommend-time {
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .recommend-card a {
            text-decoration: none;
        }

        .recommend-card a:hover .recommend-title {
            color: var(--color-accent-dark);
        }

        /* CTA */
        .article-cta-section {
            background-color: var(--color-primary);
            padding: 40px 24px;
            color: #FFFFFF;
        }

        .article-cta-section .container {
            max-width: 860px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .article-cta-section h2 {
            font-family: var(--font-heading);
            font-size: 22px;
            line-height: 1.5;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 8px;
        }

        .article-cta-section p {
            font-size: 15px;
            color: #D8E2DE;
            margin-bottom: 0;
            max-width: 520px;
        }

        .btn-cta {
            background-color: var(--color-accent);
            color: #FFFFFF;
            border-radius: var(--radius-btn);
            padding: 12px 22px;
            font-weight: 600;
            font-size: 15px;
            text-decoration: none;
            transition: background-color var(--transition-base), transform var(--transition-base);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 48px;
            white-space: nowrap;
        }

        .btn-cta:hover {
            background-color: var(--color-accent-dark);
            color: #FFFFFF;
            text-decoration: none;
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary);
            color: var(--color-footer-text);
            padding: 48px 0 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
        }

        .site-footer .container {
            max-width: var(--container-max);
        }

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

        .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.2px;
        }

        .footer-col p {
            font-size: 13px;
            line-height: 1.8;
            color: var(--color-footer-text);
            margin-bottom: 0;
        }

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

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

        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-footer-link);
            text-decoration: none;
            transition: color var(--transition-base);
        }

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

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.12);
            font-size: 12px;
            color: #B9C9C4;
        }

        .footer-bottom .copyright {
            font-size: 12px;
        }

        .footer-bottom .disclaimer {
            font-size: 12px;
            line-height: 1.7;
            max-width: 620px;
            color: #B9C9C4;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .recommend-grid {
                grid-template-columns: 1fr 1fr;
            }
            .article-hero h1 {
                font-size: 30px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-padding-mobile);
            }
            .recommend-section {
                padding: var(--section-padding-mobile);
            }
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background-color: var(--color-primary);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 12px 16px 20px;
                border-top: 1px solid rgba(255,255,255,0.12);
                box-shadow: 0 12px 20px rgba(0,0,0,0.25);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 14px 16px;
                font-size: 16px;
                border-bottom: 1px solid rgba(255,255,255,0.08);
                border-radius: 0;
            }
            .nav-menu a:last-child {
                border-bottom: none;
            }
            .site-logo {
                font-size: 15px;
                letter-spacing: 0;
            }
            .article-hero h1 {
                font-size: 26px;
            }
            .article-body {
                padding: 24px 8px 40px;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
            }
            .article-cta-section .container {
                flex-direction: column;
                align-items: flex-start;
            }
            .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;
            }
            .article-hero {
                padding: 28px 16px;
            }
            .article-hero h1 {
                font-size: 24px;
            }
            .section-title {
                font-size: 24px;
            }
            .btn-primary-custom,
            .btn-outline-custom,
            .btn-cta {
                width: 100%;
            }
            .article-meta-tags {
                gap: 8px;
                font-size: 13px;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #0E3B36;
            --color-primary-hover: #123F3A;
            --color-accent: #D97745;
            --color-accent-dark: #B95F2F;
            --color-bg: #F4F1EA;
            --color-card: #FFFFFF;
            --color-card-sub: #FBF8F2;
            --color-text: #1E2624;
            --color-text-muted: #5C6863;
            --color-border: #D9D2C5;
            --color-danger: #B23B3B;
            --color-safe: #2F7D5D;
            --color-tag-bg: #F0E6D8;
            --color-link: #B95F2F;
            --color-footer-text: #E8E2D8;
            --color-footer-link: #9DB8B0;
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-tag: 999px;
            --shadow-card: 0 2px 10px rgba(14, 59, 54, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(14, 59, 54, 0.12);
            --font-heading: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", sans-serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-numeric: "DIN Alternate", "Roboto Mono", monospace;
            --section-padding-desktop: 72px 24px;
            --section-padding-mobile: 40px 16px;
            --container-max: 1170px;
            --transition-base: 0.2s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--color-link);
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:hover {
            color: var(--color-primary);
            text-decoration: underline;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 16px;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--section-padding-desktop);
        }
        .section-alt {
            background-color: #FBF8F2;
        }
        .section-deep {
            background-color: var(--color-primary);
            color: #FFFFFF;
        }
        .section-dark {
            background-color: var(--color-primary);
            color: #FFFFFF;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 28px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-text);
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-muted);
            max-width: 720px;
            line-height: 1.7;
        }
        .text-center {
            text-align: center;
        }
        .text-muted {
            color: var(--color-text-muted);
        }
        .badge-tag {
            display: inline-block;
            padding: 4px 14px;
            background-color: var(--color-tag-bg);
            border-radius: var(--radius-tag);
            font-size: 13px;
            color: var(--color-primary);
            font-weight: 500;
            white-space: nowrap;
        }
        .btn-primary {
            display: inline-block;
            padding: 12px 28px;
            background-color: var(--color-accent);
            color: #FFFFFF;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition-base);
            border: 1px solid transparent;
        }
        .btn-primary:hover {
            background-color: var(--color-primary);
            color: #FFFFFF;
            text-decoration: none;
        }
        .btn-secondary {
            display: inline-block;
            padding: 12px 28px;
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition-base);
        }
        .btn-secondary:hover {
            background-color: rgba(14, 59, 54, 0.08);
            color: var(--color-primary);
            text-decoration: none;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: var(--color-primary);
            min-height: 68px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            text-decoration: none;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .site-logo .logo-icon {
            width: 34px;
            height: 34px;
            background-color: var(--color-accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }
        .site-logo:hover {
            color: #FFFFFF;
            text-decoration: none;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-menu a {
            display: block;
            padding: 8px 16px;
            color: #D8E2DE;
            font-size: 15px;
            font-weight: 500;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .nav-menu a:hover {
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.08);
            text-decoration: none;
        }
        .nav-menu a.active {
            color: #FFFFFF;
            background-color: rgba(217, 119, 69, 0.28);
            font-weight: 600;
        }
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 8px;
            flex-direction: column;
            gap: 5px;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: #FFFFFF;
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        /* Category hero strip */
        .category-strip {
            background-color: var(--color-primary);
            padding: 40px 24px;
            color: #FFFFFF;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: #A9BCB6;
            margin-bottom: 14px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: #D8E2DE;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: #FFFFFF;
            text-decoration: underline;
        }
        .breadcrumb .sep {
            color: var(--color-accent);
        }
        .category-strip h1 {
            font-family: var(--font-heading);
            font-size: 32px;
            font-weight: 700;
            margin: 0;
            line-height: 1.3;
            color: #FFFFFF;
        }
        .category-strip .strip-desc {
            margin-top: 10px;
            font-size: 15px;
            max-width: 760px;
            color: #C8D6D1;
        }
        /* Cost structure cards */
        .cost-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .cost-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }
        .cost-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-accent);
        }
        .cost-card .cost-icon {
            width: 44px;
            height: 44px;
            background-color: rgba(14, 59, 54, 0.08);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 14px;
        }
        .cost-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
            font-family: var(--font-heading);
        }
        .cost-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.7;
        }
        /* Leverage guide */
        .leverage-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .leverage-card {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            padding: 22px 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            position: relative;
        }
        .leverage-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-accent);
        }
        .leverage-card .level-badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .level-low {
            background-color: rgba(47, 125, 93, 0.15);
            color: var(--color-safe);
        }
        .level-mid {
            background-color: rgba(14, 59, 54, 0.12);
            color: var(--color-primary);
        }
        .level-high {
            background-color: rgba(217, 119, 69, 0.15);
            color: var(--color-accent-dark);
        }
        .level-extreme {
            background-color: rgba(178, 59, 59, 0.12);
            color: var(--color-danger);
        }
        .leverage-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
            font-family: var(--font-heading);
        }
        .leverage-card .leverage-num {
            font-family: var(--font-numeric);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-accent-dark);
            margin-bottom: 10px;
        }
        .leverage-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.7;
        }
        .leverage-card .risk-tag {
            display: inline-block;
            margin-top: 10px;
            font-size: 12px;
            font-weight: 500;
            padding: 2px 10px;
            border-radius: var(--radius-tag);
        }
        /* Cost compare table */
        .compare-wrap {
            margin-top: 32px;
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 760px;
        }
        .compare-table th {
            background-color: var(--color-primary);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 14px;
            padding: 14px 16px;
            text-align: left;
            white-space: nowrap;
        }
        .compare-table td {
            padding: 14px 16px;
            font-size: 14px;
            color: var(--color-text);
            border-bottom: 1px solid var(--color-border);
            white-space: nowrap;
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table tr:hover td {
            background-color: #FAF7F1;
        }
        .compare-table .platform-name {
            font-weight: 600;
            color: var(--color-primary);
        }
        .compare-table .rate-num {
            font-family: var(--font-numeric);
            font-weight: 600;
            color: var(--color-accent-dark);
        }
        .compare-table .safe-text {
            color: var(--color-safe);
            font-weight: 600;
        }
        .compare-table .danger-text {
            color: var(--color-danger);
            font-weight: 600;
        }
        .table-scroll {
            overflow-x: auto;
        }
        .compare-cards-mobile {
            display: none;
        }
        /* Hidden fee list */
        .fee-list {
            margin-top: 32px;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .fee-item {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            display: flex;
            gap: 14px;
            align-items: flex-start;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }
        .fee-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: var(--color-danger);
        }
        .fee-item .fee-icon {
            width: 36px;
            height: 36px;
            background-color: rgba(178, 59, 59, 0.1);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--color-danger);
            flex-shrink: 0;
        }
        .fee-item h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
            font-family: var(--font-heading);
        }
        .fee-item p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }
        /* Article card list */
        .article-list-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .article-card {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-accent);
        }
        .article-card img {
            border-radius: 8px;
            margin-bottom: 14px;
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .article-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.5;
            font-family: var(--font-heading);
        }
        .article-card h3 a {
            color: var(--color-text);
            text-decoration: none;
        }
        .article-card h3 a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }
        .article-card .article-excerpt {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 12px;
            line-height: 1.7;
            flex-grow: 1;
        }
        .article-card .article-meta {
            font-size: 12px;
            color: var(--color-text-muted);
            display: flex;
            gap: 10px;
            align-items: center;
            flex-wrap: wrap;
        }
        .article-card .article-meta .meta-cat {
            color: var(--color-accent-dark);
            font-weight: 500;
        }
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--color-text-muted);
            font-size: 15px;
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px dashed var(--color-border);
        }
        /* FAQ */
        .faq-wrap {
            max-width: 820px;
            margin: 32px auto 0;
        }
        .faq-item {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            background-color: var(--color-card);
            transition: background-color var(--transition-base);
            cursor: pointer;
            gap: 16px;
            font-family: var(--font-heading);
        }
        .faq-question:hover {
            background-color: #FAF7F1;
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            background-color: rgba(14, 59, 54, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 16px;
            color: var(--color-primary);
            transition: transform var(--transition-base);
            font-family: var(--font-numeric);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background-color: rgba(217, 119, 69, 0.15);
            color: var(--color-accent-dark);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 20px;
            background-color: #FAF7F1;
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 16px 20px;
        }
        /* CTA */
        .cta-section {
            background-color: var(--color-primary);
            padding: 48px 24px;
            text-align: center;
            color: #FFFFFF;
        }
        .cta-section h2 {
            font-size: 26px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 10px;
            font-family: var(--font-heading);
        }
        .cta-section p {
            color: #C8D6D1;
            font-size: 15px;
            max-width: 600px;
            margin: 0 auto 24px;
        }
        .cta-section .btn-primary {
            background-color: var(--color-accent);
            font-size: 16px;
            padding: 14px 36px;
        }
        .cta-section .btn-primary:hover {
            background-color: #FFFFFF;
            color: var(--color-primary);
        }
        /* Footer */
        .site-footer {
            background-color: var(--color-primary);
            color: var(--color-footer-text);
            padding: 56px 24px 28px;
        }
        .site-footer .container {
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            font-family: var(--font-heading);
        }
        .footer-col p {
            font-size: 13px;
            line-height: 1.7;
            color: #C8D6D1;
            margin: 0;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--color-footer-link);
            font-size: 13px;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            align-items: center;
        }
        .footer-bottom .copyright {
            font-size: 12px;
            color: #9DB8B0;
        }
        .footer-bottom .disclaimer {
            font-size: 12px;
            color: #9DB8B0;
            max-width: 520px;
            line-height: 1.6;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .cost-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .leverage-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-list-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-padding-mobile);
            }
            .nav-menu {
                display: flex;
                flex-direction: column;
                align-items: flex-start;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background-color: var(--color-primary);
                padding: 16px 24px;
                gap: 4px;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease, padding 0.3s ease;
                padding-top: 0;
                padding-bottom: 0;
            }
            .nav-menu.open {
                max-height: 420px;
                padding-top: 16px;
                padding-bottom: 16px;
            }
            .nav-menu a {
                padding: 10px 16px;
                font-size: 15px;
                width: 100%;
            }
            .nav-toggle {
                display: flex;
            }
            .category-strip {
                padding: 28px 16px;
            }
            .category-strip h1 {
                font-size: 24px;
            }
            .cost-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .leverage-row {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .fee-list {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .article-list-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .compare-wrap {
                display: none;
            }
            .compare-cards-mobile {
                display: grid;
                grid-template-columns: 1fr;
                gap: 14px;
                margin-top: 24px;
            }
            .compare-card-mobile {
                background-color: var(--color-card);
                border: 1px solid var(--color-border);
                border-radius: var(--radius-card);
                padding: 16px 18px;
                box-shadow: var(--shadow-card);
            }
            .compare-card-mobile .mobile-platform {
                font-weight: 600;
                color: var(--color-primary);
                margin-bottom: 8px;
                font-size: 15px;
            }
            .compare-card-mobile .mobile-row {
                display: flex;
                justify-content: space-between;
                font-size: 13px;
                padding: 4px 0;
                color: var(--color-text-muted);
            }
            .compare-card-mobile .mobile-row span:last-child {
                color: var(--color-text);
                font-weight: 500;
                font-family: var(--font-numeric);
            }
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
            .section-title {
                font-size: 22px;
            }
            .category-strip h1 {
                font-size: 21px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .site-logo {
                font-size: 15px;
            }
            .site-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 12px;
            }
            .cost-card {
                padding: 18px 16px;
            }
            .leverage-card {
                padding: 18px 16px;
            }
            .fee-item {
                padding: 14px 16px;
            }
            .article-card {
                padding: 16px;
            }
            .compare-card-mobile {
                padding: 14px 16px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #0E3B36;
            --color-primary-hover: #123F3A;
            --color-accent: #D97745;
            --color-accent-dark: #B95F2F;
            --color-bg: #F4F1EA;
            --color-card: #FFFFFF;
            --color-card-sub: #FBF8F2;
            --color-text: #1E2624;
            --color-text-muted: #5C6863;
            --color-border: #D9D2C5;
            --color-danger: #B23B3B;
            --color-safe: #2F7D5D;
            --color-tag-bg: #F0E6D8;
            --color-link: #B95F2F;
            --color-footer-text: #E8E2D8;
            --color-footer-link: #9DB8B0;
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-tag: 999px;
            --shadow-card: 0 2px 10px rgba(14, 59, 54, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(14, 59, 54, 0.12);
            --font-heading: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", sans-serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-numeric: "DIN Alternate", "Roboto Mono", monospace;
            --section-padding-desktop: 72px 24px;
            --section-padding-mobile: 40px 16px;
            --container-max: 1170px;
            --transition-base: 0.2s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
        }
        a {
            color: var(--color-link);
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:hover {
            color: var(--color-primary);
            text-decoration: underline;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 16px;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        h1 {
            font-family: var(--font-heading);
            font-size: 36px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--color-text);
            margin: 0 0 16px;
        }
        h2 {
            font-family: var(--font-heading);
            font-size: 28px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--color-text);
            margin: 0 0 20px;
        }
        h3 {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 650;
            line-height: 1.5;
            color: var(--color-text);
            margin: 0 0 10px;
        }
        h4 {
            font-family: var(--font-heading);
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 10px;
        }
        p {
            margin: 0 0 16px;
            color: var(--color-text);
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: var(--color-primary);
            min-height: 68px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            text-decoration: none;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .site-logo .logo-icon {
            width: 34px;
            height: 34px;
            background-color: var(--color-accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }
        .site-logo:hover {
            color: #FFFFFF;
            text-decoration: none;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-menu a {
            display: block;
            padding: 8px 16px;
            color: #D8E2DE;
            font-size: 15px;
            font-weight: 500;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .nav-menu a:hover {
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.08);
            text-decoration: none;
        }
        .nav-menu a.active {
            color: #FFFFFF;
            background-color: rgba(217, 119, 69, 0.28);
            font-weight: 600;
        }
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 8px;
            flex-direction: column;
            gap: 5px;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: #FFFFFF;
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            background-color: var(--color-bg);
            padding: 22px 0 0;
        }
        .breadcrumb-section .breadcrumb-list {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .breadcrumb-section .breadcrumb-list li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb-section .breadcrumb-list a {
            color: var(--color-link);
            font-weight: 500;
        }
        .breadcrumb-section .breadcrumb-list a:hover {
            color: var(--color-primary);
            text-decoration: underline;
        }
        .breadcrumb-section .breadcrumb-list .sep {
            color: var(--color-border);
            font-size: 12px;
        }
        .breadcrumb-section .breadcrumb-list .current {
            color: var(--color-text);
            font-weight: 600;
        }

        /* Category title bar */
        .category-title-bar {
            background-color: var(--color-bg);
            padding: 28px 24px 12px;
        }
        .category-title-bar h1 {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: 0.5px;
            border-left: 5px solid var(--color-accent);
            padding-left: 18px;
        }
        .category-title-bar .subtitle {
            font-size: 16px;
            color: var(--color-text-muted);
            margin: 10px 0 0 23px;
            max-width: 780px;
        }

        /* Filter tool bar */
        .filter-toolbar {
            background-color: var(--color-bg);
            padding: 8px 24px 16px;
        }
        .filter-toolbar .toolbar-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 12px 18px;
            box-shadow: var(--shadow-card);
        }
        .filter-toolbar .toolbar-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-muted);
            margin-right: 6px;
            white-space: nowrap;
        }
        .filter-toolbar .filter-btn {
            padding: 7px 14px;
            border-radius: var(--radius-tag);
            font-size: 14px;
            font-weight: 500;
            background-color: var(--color-card-sub);
            border: 1px solid var(--color-border);
            color: var(--color-text);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .filter-toolbar .filter-btn:hover,
        .filter-toolbar .filter-btn.active {
            background-color: var(--color-primary);
            color: #FFFFFF;
            border-color: var(--color-primary);
        }
        .filter-toolbar .filter-btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        /* Section base */
        .section {
            padding: var(--section-padding-desktop);
            background-color: var(--color-bg);
        }
        .section-alt {
            background-color: #ECE7DD;
        }
        .section-heading {
            margin-bottom: 32px;
        }
        .section-heading h2 {
            position: relative;
            display: inline-block;
            margin-bottom: 8px;
        }
        .section-heading h2::after {
            content: '';
            display: block;
            width: 58px;
            height: 4px;
            background-color: var(--color-accent);
            border-radius: 2px;
            margin-top: 8px;
        }
        .section-heading p {
            font-size: 15px;
            color: var(--color-text-muted);
            max-width: 720px;
            margin-bottom: 0;
        }

        /* Ranking cards */
        .ranking-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .ranking-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .ranking-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-accent);
        }
        .ranking-card .card-img-wrapper {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--color-card-sub);
        }
        .ranking-card .card-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .rank-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            width: 38px;
            height: 38px;
            background-color: var(--color-accent);
            color: #fff;
            font-family: var(--font-numeric);
            font-weight: 800;
            font-size: 17px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
            z-index: 2;
        }
        .rank-badge.rank-1 {
            background-color: var(--color-accent);
        }
        .rank-badge.rank-2 {
            background-color: #8C8C8C;
        }
        .rank-badge.rank-3 {
            background-color: #B87333;
        }
        .rank-badge.rank-4,
        .rank-badge.rank-5,
        .rank-badge.rank-6 {
            background-color: var(--color-primary);
        }
        .ranking-card .card-body {
            padding: 16px 18px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 10px;
        }
        .card-tag {
            padding: 3px 10px;
            background-color: var(--color-tag-bg);
            border-radius: var(--radius-tag);
            font-size: 12px;
            font-weight: 500;
            color: var(--color-text);
            white-space: nowrap;
        }
        .card-tag.safe {
            background-color: rgba(47, 125, 93, 0.12);
            color: var(--color-safe);
        }
        .ranking-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .ranking-card .platform-desc {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 12px;
            flex: 1;
        }
        .card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 12px;
        }
        .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
            white-space: nowrap;
        }
        .card-meta .score {
            font-family: var(--font-numeric);
            font-weight: 700;
            color: var(--color-accent-dark);
            font-size: 15px;
        }
        .card-link {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent-dark);
            border-bottom: 1px solid transparent;
            transition: all var(--transition-base);
            align-self: flex-start;
        }
        .card-link:hover {
            color: var(--color-primary);
            border-bottom-color: var(--color-primary);
            text-decoration: none;
        }

        /* Top 3 comparison */
        .compare-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .compare-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 22px 20px;
            transition: all var(--transition-base);
        }
        .compare-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .compare-card.highlight {
            border-color: var(--color-accent);
            box-shadow: 0 4px 20px rgba(217, 119, 69, 0.12);
        }
        .compare-card .compare-rank {
            display: inline-block;
            font-family: var(--font-numeric);
            font-size: 28px;
            font-weight: 800;
            color: var(--color-accent);
            margin-bottom: 6px;
        }
        .compare-card .compare-name {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--color-text);
        }
        .compare-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .compare-list li {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 7px 0;
            border-bottom: 1px dashed var(--color-border);
            font-size: 14px;
            gap: 12px;
        }
        .compare-list li:last-child {
            border-bottom: none;
        }
        .compare-list .label {
            color: var(--color-text-muted);
            white-space: nowrap;
        }
        .compare-list .value {
            font-weight: 600;
            color: var(--color-text);
            text-align: right;
        }
        .compare-list .value.highlight-value {
            color: var(--color-safe);
        }
        .compare-list .value.warn-value {
            color: var(--color-danger);
        }

        /* News cards */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .news-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: all var(--transition-base);
            text-decoration: none;
            color: var(--color-text);
        }
        .news-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            text-decoration: none;
            color: var(--color-text);
        }
        .news-card img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }
        .news-card .news-body {
            padding: 16px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--color-text-muted);
            margin-bottom: 8px;
        }
        .news-card .news-meta .news-cat {
            background-color: var(--color-tag-bg);
            padding: 2px 10px;
            border-radius: var(--radius-tag);
            font-weight: 500;
        }
        .news-card h3 {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 8px;
        }
        .news-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 10px;
            flex: 1;
        }
        .news-card time {
            font-size: 12px;
            color: var(--color-text-muted);
        }
        .empty-state {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px 20px;
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px dashed var(--color-border);
            color: var(--color-text-muted);
            font-size: 15px;
        }

        /* CTA section */
        .cta-section {
            background-color: var(--color-primary);
            padding: var(--section-padding-desktop);
        }
        .cta-section .cta-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .cta-section .cta-text h2 {
            color: #FFFFFF;
            font-size: 28px;
            margin-bottom: 12px;
        }
        .cta-section .cta-text p {
            color: #C9D4D0;
            font-size: 15px;
            margin-bottom: 0;
            max-width: 520px;
        }
        .cta-form {
            background-color: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: var(--radius-card);
            padding: 26px 24px;
        }
        .cta-form .form-group {
            margin-bottom: 14px;
        }
        .cta-form label {
            display: block;
            font-size: 14px;
            color: #D8E2DE;
            margin-bottom: 6px;
            font-weight: 500;
        }
        .cta-form input,
        .cta-form select,
        .cta-form textarea {
            width: 100%;
            height: 48px;
            padding: 0 14px;
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text);
            font-size: 15px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .cta-form textarea {
            height: 78px;
            padding-top: 12px;
            resize: vertical;
        }
        .cta-form input:focus,
        .cta-form select:focus,
        .cta-form textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 2px rgba(217, 119, 69, 0.25);
            outline: none;
        }
        .cta-form .btn-submit {
            width: 100%;
            background-color: var(--color-accent);
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 600;
            padding: 13px 24px;
            border-radius: var(--radius-btn);
            transition: all var(--transition-base);
            text-align: center;
        }
        .cta-form .btn-submit:hover {
            background-color: var(--color-accent-dark);
        }
        .cta-form .btn-submit:focus-visible {
            outline: 2px solid #FFFFFF;
            outline-offset: 2px;
        }

        /* Risk notice */
        .risk-notice {
            background-color: #FDF2F0;
            border: 1px solid rgba(178, 59, 59, 0.25);
            border-left: 4px solid var(--color-danger);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            margin-top: 12px;
        }
        .risk-notice p {
            color: #8C3A33;
            font-size: 14px;
            margin-bottom: 0;
            font-weight: 500;
        }
        .risk-notice strong {
            color: var(--color-danger);
            font-weight: 700;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary);
            color: var(--color-footer-text);
            padding: 48px 24px 24px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer h4 {
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .site-footer p {
            color: var(--color-footer-text);
            font-size: 14px;
            line-height: 1.7;
        }
        .site-footer ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .site-footer ul li {
            margin-bottom: 8px;
        }
        .site-footer ul a {
            color: var(--color-footer-link);
            font-size: 14px;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        .site-footer ul a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 18px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: #B8C5C0;
        }
        .site-footer .copyright {
            font-size: 13px;
            color: #B8C5C0;
        }
        .site-footer .disclaimer {
            font-size: 12px;
            color: #A0B0AA;
            max-width: 620px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .ranking-grid,
            .compare-grid,
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .cta-section .cta-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            h1 {
                font-size: 30px;
            }
            .category-title-bar h1 {
                font-size: 30px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-padding-mobile);
            }
            .cta-section {
                padding: var(--section-padding-mobile);
            }
            .container {
                padding: 0 16px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background-color: var(--color-primary);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 12px 16px 20px;
                display: none;
                box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
                z-index: 999;
            }
            .nav-menu.mobile-open {
                display: flex;
            }
            .nav-menu a {
                padding: 12px 16px;
                font-size: 15px;
                border-radius: 8px;
            }
            .ranking-grid,
            .compare-grid,
            .news-grid {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            h1 {
                font-size: 26px;
            }
            .category-title-bar h1 {
                font-size: 26px;
                padding-left: 12px;
            }
            .category-title-bar .subtitle {
                margin-left: 0;
                font-size: 14px;
            }
            .filter-toolbar .toolbar-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .filter-toolbar .filter-btn {
                padding: 6px 12px;
                font-size: 13px;
            }
            .cta-form {
                padding: 20px 16px;
            }
            .compare-card {
                padding: 16px 14px;
            }
            .compare-list li {
                font-size: 13px;
            }
        }
        @media (max-width: 640px) {
            .site-logo {
                font-size: 15px;
                letter-spacing: 0;
                gap: 8px;
            }
            .site-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 12px;
            }
            h1 {
                font-size: 24px;
            }
            h2 {
                font-size: 22px;
            }
            .category-title-bar h1 {
                font-size: 24px;
                border-left-width: 4px;
            }
            .section-heading h2 {
                font-size: 22px;
            }
            .ranking-card .card-body {
                padding: 12px 14px 14px;
            }
            .ranking-card h3 {
                font-size: 17px;
            }
            .card-meta {
                gap: 8px;
                font-size: 12px;
            }
            .cta-form input,
            .cta-form select {
                height: 44px;
                font-size: 14px;
            }
            .risk-notice p {
                font-size: 13px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #0E3B36;
            --color-primary-hover: #123F3A;
            --color-accent: #D97745;
            --color-accent-dark: #B95F2F;
            --color-bg: #F4F1EA;
            --color-card: #FFFFFF;
            --color-card-sub: #FBF8F2;
            --color-text: #1E2624;
            --color-text-muted: #5C6863;
            --color-border: #D9D2C5;
            --color-danger: #B23B3B;
            --color-safe: #2F7D5D;
            --color-tag-bg: #F0E6D8;
            --color-link: #B95F2F;
            --color-footer-text: #E8E2D8;
            --color-footer-link: #9DB8B0;
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-tag: 999px;
            --shadow-card: 0 2px 10px rgba(14, 59, 54, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(14, 59, 54, 0.12);
            --font-heading: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", sans-serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-numeric: "DIN Alternate", "Roboto Mono", monospace;
            --section-padding-desktop: 72px 24px;
            --section-padding-mobile: 40px 16px;
            --container-max: 1170px;
            --transition-base: 0.2s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--color-link);
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:hover {
            color: var(--color-primary);
            text-decoration: underline;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 16px;
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            line-height: 1.35;
            margin-top: 0;
        }
        p {
            margin: 0 0 1em;
        }
        ul, ol {
            margin: 0 0 1em;
            padding-left: 1.4em;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: var(--color-primary);
            min-height: 68px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            text-decoration: none;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .site-logo .logo-icon {
            width: 34px;
            height: 34px;
            background-color: var(--color-accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }
        .site-logo:hover {
            color: #FFFFFF;
            text-decoration: none;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-menu a {
            display: block;
            padding: 8px 16px;
            color: #D8E2DE;
            font-size: 15px;
            font-weight: 500;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .nav-menu a:hover {
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.08);
            text-decoration: none;
        }
        .nav-menu a.active {
            color: #FFFFFF;
            background-color: rgba(217, 119, 69, 0.28);
            font-weight: 600;
        }
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 8px;
            flex-direction: column;
            gap: 5px;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: #FFFFFF;
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border);
            padding: 12px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 14px;
            color: var(--color-text-muted);
        }
        .breadcrumb a {
            color: var(--color-text-muted);
            text-decoration: none;
            transition: color var(--transition-base);
        }
        .breadcrumb a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }
        .breadcrumb .separator {
            color: var(--color-border);
            user-select: none;
        }

        /* Category banner */
        .category-banner {
            background-color: var(--color-primary);
            background-image: url('/assets/images/20ec8c4207226814.webp');
            background-size: cover;
            background-position: center;
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14, 59, 54, 0.92) 0%, rgba(14, 59, 54, 0.78) 55%, rgba(14, 59, 54, 0.65) 100%);
            z-index: 0;
        }
        .category-banner .container {
            position: relative;
            z-index: 1;
        }
        .category-banner h1 {
            color: #FFFFFF;
            font-size: 38px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .category-banner .banner-sub {
            color: rgba(232, 226, 216, 0.88);
            font-size: 17px;
            max-width: 680px;
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* Section common */
        .section {
            padding: var(--section-padding-desktop);
        }
        .section-alt {
            background-color: #FFFFFF;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-muted);
            max-width: 720px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .section-title .accent {
            color: var(--color-accent-dark);
        }

        /* Checklist */
        .checklist-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .checklist-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px 18px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .checklist-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-accent);
        }
        .checklist-check {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border: 2px solid var(--color-border);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            background: #FFFFFF;
            transition: all var(--transition-base);
            margin-top: 3px;
            cursor: pointer;
            position: relative;
        }
        .checklist-check.checked {
            background: var(--color-safe);
            border-color: var(--color-safe);
        }
        .checklist-check.checked::after {
            content: '✓';
            font-size: 16px;
            font-weight: 700;
        }
        .checklist-text h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--color-text);
        }
        .checklist-text p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 0;
            line-height: 1.65;
        }

        /* Risk metrics */
        .risk-metrics-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .risk-metric-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            padding: 28px 22px;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .risk-metric-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .risk-metric-card .metric-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 14px;
            font-weight: 700;
        }
        .risk-metric-card.danger .metric-icon {
            background: rgba(178, 59, 59, 0.1);
            color: var(--color-danger);
        }
        .risk-metric-card.safe .metric-icon {
            background: rgba(47, 125, 93, 0.1);
            color: var(--color-safe);
        }
        .risk-metric-card.warn .metric-icon {
            background: rgba(217, 119, 69, 0.12);
            color: var(--color-accent-dark);
        }
        .metric-value {
            font-family: var(--font-numeric);
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }
        .risk-metric-card.danger .metric-value { color: var(--color-danger); }
        .risk-metric-card.safe .metric-value { color: var(--color-safe); }
        .risk-metric-card.warn .metric-value { color: var(--color-accent-dark); }
        .metric-label {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }
        .metric-desc {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* Fund flow */
        .fund-flow-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .fund-flow-steps {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .fund-flow-steps li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px dashed var(--color-border);
        }
        .fund-flow-steps li:last-child {
            border-bottom: none;
        }
        .step-num {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            background: var(--color-primary);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-numeric);
            font-size: 14px;
            font-weight: 700;
        }
        .step-content h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 3px;
            color: var(--color-text);
        }
        .step-content p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .fund-flow-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
        }
        .fund-flow-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        /* Fraud list */
        .fraud-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .fraud-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-left: 4px solid var(--color-danger);
            border-radius: var(--radius-card);
            padding: 18px 18px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
        }
        .fraud-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .fraud-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-danger);
            margin-bottom: 6px;
        }
        .fraud-item p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 0;
            line-height: 1.65;
        }

        /* Related articles */
        .article-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .article-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .article-card a {
            color: var(--color-text);
            text-decoration: none;
            display: block;
            flex: 1;
        }
        .article-card a:hover {
            color: var(--color-text);
            text-decoration: none;
        }
        .article-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-text);
            line-height: 1.5;
        }
        .article-card h3 a {
            color: inherit;
            text-decoration: none;
        }
        .article-card h3 a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }
        .article-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 12px;
            line-height: 1.65;
        }
        .article-card .article-meta {
            display: flex;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .article-card .article-meta .tag {
            background: var(--color-tag-bg);
            color: var(--color-accent-dark);
            padding: 2px 10px;
            border-radius: var(--radius-tag);
            font-size: 12px;
        }

        /* CTA */
        .cta-section {
            background-color: var(--color-primary);
            background-image: url('/assets/images/a2063de6f04fc832.webp');
            background-size: cover;
            background-position: center;
            padding: 48px 24px;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(14, 59, 54, 0.88);
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            color: #FFFFFF;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .cta-section p {
            color: rgba(232, 226, 216, 0.85);
            font-size: 16px;
            max-width: 640px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition-base);
            letter-spacing: 0.3px;
            border: 2px solid transparent;
            cursor: pointer;
        }
        .btn-primary {
            background-color: var(--color-accent);
            color: #FFFFFF;
            border-color: var(--color-accent);
        }
        .btn-primary:hover {
            background-color: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
            color: #FFFFFF;
            text-decoration: none;
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #FFFFFF;
            text-decoration: none;
            border-color: var(--color-primary);
        }
        .btn-light {
            background: #FFFFFF;
            color: var(--color-primary);
            border-color: #FFFFFF;
        }
        .btn-light:hover {
            background: var(--color-tag-bg);
            border-color: var(--color-tag-bg);
            color: var(--color-primary);
            text-decoration: none;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary);
            padding: 48px 0 24px;
            color: var(--color-footer-text);
            font-size: 14px;
            line-height: 1.7;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-col h4 {
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .footer-col p {
            color: rgba(232, 226, 216, 0.75);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--color-footer-link);
            text-decoration: none;
            transition: color var(--transition-base);
            font-size: 14px;
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
            font-size: 12px;
        }
        .footer-bottom .copyright {
            color: rgba(232, 226, 216, 0.7);
        }
        .footer-bottom .disclaimer {
            color: rgba(232, 226, 216, 0.6);
            max-width: 520px;
            text-align: right;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .fund-flow-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .risk-metrics-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .checklist-grid,
            .fraud-list,
            .article-list {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: var(--section-padding-mobile);
            }
            .nav-menu {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--color-primary);
                flex-direction: column;
                gap: 0;
                align-items: flex-start;
                padding: 20px 16px;
                display: none;
                overflow-y: auto;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                width: 100%;
                padding: 14px 16px;
                font-size: 16px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                border-radius: 0;
            }
            .nav-toggle {
                display: flex;
            }
            .category-banner h1 {
                font-size: 26px;
            }
            .section-title {
                font-size: 22px;
            }
            .checklist-grid,
            .fraud-list,
            .article-list {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .risk-metrics-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .fund-flow-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom .disclaimer {
                text-align: center;
                max-width: 100%;
            }
            .cta-section h2 {
                font-size: 22px;
            }
        }
        @media (max-width: 640px) {
            .site-logo {
                font-size: 15px;
                gap: 6px;
            }
            .site-logo .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 11px;
                border-radius: 6px;
            }
            .category-banner h1 {
                font-size: 22px;
                letter-spacing: 0.2px;
            }
            .breadcrumb {
                font-size: 13px;
            }
            .btn {
                padding: 10px 22px;
                font-size: 15px;
            }
            .metric-value {
                font-size: 26px;
            }
        }