/* roulang page: index */
:root {
            --color-primary: #B33A3A;
            --color-primary-dark: #9C2F2F;
            --color-primary-light: #C55A5A;
            --color-accent: #D9A441;
            --color-accent-soft: #F0E0C0;
            --color-text: #2F2A26;
            --color-text-muted: #6B625C;
            --color-text-weak: #9A9088;
            --color-bg: #FAF6F0;
            --color-card: #FFFFFF;
            --color-border: #E5DCD3;
            --color-footer: #2C2622;
            --color-footer-text: #D8D0C8;
            --color-table-header: #F5EFE8;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Source Han Sans SC', 'Helvetica Neue', Arial, sans-serif;
            --font-serif: 'Source Han Serif SC', 'Noto Serif CJK SC', 'Songti SC', 'SimSun', serif;
            --font-mono: 'DIN Alternate', 'SF Mono', 'Roboto Mono', 'Courier New', monospace;
            --container-width: 1200px;
            --nav-height: 80px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-serif);
            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-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border);
            z-index: 1000;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: baseline;
            gap: 6px;
            flex-shrink: 0;
        }
        .logo a {
            display: flex;
            align-items: baseline;
            gap: 6px;
            font-family: var(--font-sans);
            font-weight: 700;
            font-size: 21px;
            color: var(--color-text);
        }
        .logo a:hover {
            color: var(--color-primary);
        }
        .logo .logo-en {
            font-size: 12px;
            font-weight: 400;
            color: var(--color-text-weak);
            letter-spacing: 0.03em;
        }
        .logo .logo-dot {
            color: var(--color-primary);
            font-size: 24px;
            font-weight: 700;
            line-height: 1;
        }

        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 8px;
            align-items: center;
        }
        .main-nav a {
            display: block;
            padding: 10px 16px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.06);
        }
        .main-nav a.active {
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.1);
            font-weight: 600;
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-cta .btn {
            padding: 10px 20px;
            font-size: 14px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: #fff;
            transition: all var(--transition);
        }
        .hamburger:hover {
            border-color: var(--color-primary);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 999;
            padding: 20px 24px;
            flex-direction: column;
            gap: 4px;
            border-top: 1px solid var(--color-border);
            overflow-y: auto;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav a {
            display: block;
            padding: 14px 16px;
            font-family: var(--font-sans);
            font-size: 17px;
            font-weight: 500;
            color: var(--color-text);
            border-radius: var(--radius-sm);
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition);
        }
        .mobile-nav a:hover {
            background: rgba(179, 58, 58, 0.05);
            color: var(--color-primary);
        }
        .mobile-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
            background: rgba(179, 58, 58, 0.08);
        }
        .mobile-nav .nav-cta {
            margin-top: 16px;
            width: 100%;
        }
        .mobile-nav .nav-cta .btn {
            width: 100%;
            text-align: center;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-family: var(--font-sans);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            text-align: center;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(179, 58, 58, 0.25);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(179, 58, 58, 0.2);
        }
        .btn-secondary {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn-secondary:hover {
            background: rgba(179, 58, 58, 0.08);
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        /* ===== Hero ===== */
        .hero {
            padding-top: calc(var(--nav-height) + 48px);
            padding-bottom: 48px;
            background-color: var(--color-bg);
            background-image:
                linear-gradient(rgba(179, 58, 58, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(179, 58, 58, 0.025) 1px, transparent 1px),
                radial-gradient(ellipse at 70% 30%, rgba(217, 164, 65, 0.06) 0%, transparent 55%);
            background-size: 28px 28px, 28px 28px, 100% 100%;
            position: relative;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(179, 58, 58, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-content {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            align-self: flex-start;
            padding: 6px 14px;
            background: rgba(217, 164, 65, 0.12);
            border: 1px solid rgba(217, 164, 65, 0.35);
            border-radius: 999px;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 500;
            color: #8B6914;
        }
        .hero-tag .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-accent);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.3); }
        }
        .hero h1 {
            font-family: var(--font-sans);
            font-size: 40px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-text);
            letter-spacing: -0.01em;
        }
        .hero h1 .highlight {
            color: var(--color-primary);
            position: relative;
        }
        .hero h1 .highlight::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 4px;
            height: 8px;
            background: rgba(217, 164, 65, 0.3);
            border-radius: 4px;
            z-index: -1;
        }
        .hero-subtitle {
            font-size: 18px;
            font-weight: 500;
            font-family: var(--font-sans);
            color: var(--color-text);
            line-height: 1.6;
        }
        .hero-desc {
            font-size: 16px;
            color: var(--color-text-muted);
            line-height: 1.8;
            max-width: 480px;
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 8px;
            flex-wrap: wrap;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .hero-stat .stat-num {
            font-family: var(--font-mono);
            font-size: 26px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
        }
        .hero-stat .stat-label {
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text-weak);
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 8px;
        }
        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-visual .img-wrap {
            width: 100%;
            max-width: 520px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--color-border);
            position: relative;
            background: var(--color-card);
        }
        .hero-visual .img-wrap img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .hero-visual .floating-badge {
            position: absolute;
            bottom: 24px;
            left: -20px;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 12px 18px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text);
        }
        .hero-visual .floating-badge .arrow-up {
            color: #2D7A2D;
            font-size: 16px;
            font-weight: 700;
        }
        .hero-visual .floating-badge .badge-label {
            font-weight: 600;
        }
        .hero-visual .floating-badge .badge-value {
            font-family: var(--font-mono);
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ===== Ticker ===== */
        .ticker-section {
            background: #fff;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            padding: 16px 0;
            overflow: hidden;
        }
        .ticker-wrap {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .ticker-label {
            flex-shrink: 0;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text);
            background: var(--color-bg);
            padding: 6px 14px;
            border-radius: 999px;
            border: 1px solid var(--color-border);
            white-space: nowrap;
        }
        .ticker-track {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding: 4px 0;
            scrollbar-width: thin;
            scrollbar-color: var(--color-border) transparent;
            -webkit-overflow-scrolling: touch;
        }
        .ticker-track::-webkit-scrollbar {
            height: 4px;
        }
        .ticker-track::-webkit-scrollbar-thumb {
            background: var(--color-border);
            border-radius: 4px;
        }
        .ticker-card {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 8px 16px;
            font-family: var(--font-sans);
            white-space: nowrap;
        }
        .ticker-card .match-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text);
        }
        .ticker-card .match-type {
            font-size: 11px;
            color: var(--color-text-weak);
            background: var(--color-card);
            padding: 2px 8px;
            border-radius: 4px;
            border: 1px solid var(--color-border);
        }
        .ticker-card .match-value {
            font-family: var(--font-mono);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
        }
        .ticker-card .arrow-up {
            color: #2D7A2D;
        }
        .ticker-card .arrow-down {
            color: var(--color-primary);
        }
        .ticker-card .arrow-flat {
            color: var(--color-text-weak);
        }

        /* ===== Section Common ===== */
        .section {
            padding: 56px 0;
        }
        .section-alt {
            background: #fff;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .section-header {
            text-align: center;
            margin-bottom: 36px;
        }
        .section-header .section-label {
            display: inline-block;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.08);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .section-header h2 {
            font-family: var(--font-sans);
            font-size: 28px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.3;
        }
        .section-header .section-sub {
            font-size: 15px;
            color: var(--color-text-muted);
            margin-top: 8px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Feature Grid ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }
        .feature-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px 18px;
            text-align: center;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 10px;
            align-items: center;
            min-height: 150px;
            justify-content: center;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: #D5C8BD;
            transform: translateY(-3px);
        }
        .feature-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(179, 58, 58, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-primary);
        }
        .feature-card h3 {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
        }
        .feature-card p {
            font-size: 13px;
            color: var(--color-text-weak);
            line-height: 1.5;
        }
        .feature-card a {
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 500;
            color: var(--color-primary);
            margin-top: 4px;
        }

        /* ===== Function Blocks ===== */
        .function-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 48px;
        }
        .function-block:last-child {
            margin-bottom: 0;
        }
        .function-block.reverse {
            direction: rtl;
        }
        .function-block.reverse > * {
            direction: ltr;
        }
        .function-block .func-text h3 {
            font-family: var(--font-sans);
            font-size: 24px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 12px;
        }
        .function-block .func-text .func-desc {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .function-block .func-text ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .function-block .func-text ul li {
            padding-left: 24px;
            position: relative;
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.6;
        }
        .function-block .func-text ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
        }
        .function-block .func-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
            background: var(--color-card);
        }
        .function-block .func-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 16/10;
        }

        /* ===== Table ===== */
        .table-responsive {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            background: var(--color-card);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-family: var(--font-sans);
            font-size: 14px;
            min-width: 820px;
        }
        .data-table thead {
            background: var(--color-table-header);
        }
        .data-table th {
            padding: 14px 16px;
            text-align: left;
            font-weight: 600;
            font-size: 13px;
            color: var(--color-text);
            border-bottom: 1px solid var(--color-border);
            white-space: nowrap;
        }
        .data-table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--color-border);
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--color-text);
            white-space: nowrap;
        }
        .data-table tbody tr:nth-child(even) {
            background: #FBF8F5;
        }
        .data-table tbody tr:hover {
            background: rgba(217, 164, 65, 0.06);
        }
        .data-table .match-cell {
            font-family: var(--font-sans);
            font-weight: 500;
        }
        .data-table .var-up {
            color: #2D7A2D;
            font-weight: 600;
        }
        .data-table .var-down {
            color: var(--color-primary);
            font-weight: 600;
        }
        .data-table .var-neutral {
            color: var(--color-text-weak);
        }

        /* ===== Brand Intro ===== */
        .brand-intro {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }
        .brand-text .brand-title {
            font-family: var(--font-sans);
            font-size: 26px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
        }
        .brand-text p {
            font-size: 15px;
            line-height: 2;
            color: var(--color-text-muted);
            margin-bottom: 14px;
        }
        .brand-text p:last-child {
            margin-bottom: 0;
        }
        .brand-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
            position: sticky;
            top: calc(var(--nav-height) + 20px);
        }
        .brand-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .step-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .step-card .step-num {
            font-family: var(--font-mono);
            font-size: 42px;
            font-weight: 700;
            color: rgba(179, 58, 58, 0.15);
            line-height: 1;
            position: absolute;
            top: 16px;
            right: 20px;
        }
        .step-card h3 {
            font-family: var(--font-sans);
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
            margin-top: 12px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
        }

        /* ===== Scenario Cards ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .scenario-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: #D5C8BD;
        }
        .scenario-card .scenario-tag {
            align-self: flex-start;
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 500;
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.08);
            padding: 3px 10px;
            border-radius: 999px;
        }
        .scenario-card h3 {
            font-family: var(--font-sans);
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
        }
        .scenario-card p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.7;
        }
        .scenario-card .scenario-link {
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 500;
            color: var(--color-primary);
            margin-top: auto;
        }

        /* ===== Article Cards ===== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .article-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .article-card .article-img {
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--color-bg);
        }
        .article-card .article-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .article-card:hover .article-img img {
            transform: scale(1.05);
        }
        .article-card .article-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }
        .article-card .article-title {
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.5;
            transition: color var(--transition);
        }
        .article-card:hover .article-title {
            color: var(--color-primary);
        }
        .article-card .article-excerpt {
            font-size: 13px;
            color: var(--color-text-weak);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-family: var(--font-sans);
            font-size: 12px;
            color: var(--color-text-weak);
            margin-top: auto;
            padding-top: 8px;
        }
        .article-card .article-tag {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: 4px;
            padding: 2px 8px;
            font-size: 11px;
            color: var(--color-text-muted);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .faq-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: #D5C8BD;
        }
        .faq-item.active {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            text-align: left;
            font-family: var(--font-sans);
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            background: none;
            border: none;
            transition: all var(--transition);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-text-weak);
            transition: all var(--transition);
            font-family: var(--font-mono);
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(45deg);
            color: var(--color-primary);
        }
        .faq-answer {
            display: none;
            padding: 0 20px 18px;
            font-size: 16px;
            color: var(--color-text-muted);
            line-height: 1.8;
            border-top: none;
        }
        .faq-item.active .faq-answer {
            display: block;
            border-top: 1px solid var(--color-border);
            padding-top: 14px;
        }

        /* ===== Reviews ===== */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .review-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 10px;
            transition: all var(--transition);
        }
        .review-card:hover {
            box-shadow: var(--shadow-md);
            border-color: #D5C8BD;
        }
        .review-card .review-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .review-card .review-name {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
        }
        .review-card .review-tag {
            font-family: var(--font-sans);
            font-size: 11px;
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.07);
            padding: 3px 10px;
            border-radius: 999px;
        }
        .review-card .review-text {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
        }
        .review-card .review-stars {
            color: var(--color-accent);
            font-size: 13px;
            letter-spacing: 2px;
        }

        /* ===== Subscribe CTA ===== */
        .subscribe-section {
            padding: 56px 0;
        }
        .subscribe-card {
            background: linear-gradient(135deg, #FFFFFF 0%, #FAF6F0 100%);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            box-shadow: var(--shadow-md);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .subscribe-text h2 {
            font-family: var(--font-sans);
            font-size: 26px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 10px;
        }
        .subscribe-text p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.8;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .subscribe-form input {
            flex: 1;
            min-width: 200px;
            padding: 13px 18px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            font-size: 14px;
            font-family: var(--font-sans);
            background: #fff;
            transition: all var(--transition);
        }
        .subscribe-form input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(179, 58, 58, 0.1);
            outline: none;
        }
        .subscribe-form input::placeholder {
            color: var(--color-text-weak);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-footer);
            color: var(--color-footer-text);
            padding: 48px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            padding-bottom: 36px;
        }
        .footer-brand h3 {
            font-family: var(--font-sans);
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-footer-text);
            opacity: 0.8;
        }
        .footer-col h4 {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--color-footer-text);
            opacity: 0.8;
            transition: all var(--transition);
        }
        .footer-col ul a:hover {
            color: #fff;
            opacity: 1;
        }
        .footer-contact p {
            font-size: 14px;
            line-height: 1.8;
            opacity: 0.8;
            margin-bottom: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
        }
        .footer-bottom .footer-links {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 8px 16px;
            font-size: 13px;
            color: var(--color-footer-text);
            opacity: 0.7;
        }
        .footer-bottom .footer-links a {
            color: var(--color-footer-text);
            opacity: 0.8;
            transition: all var(--transition);
        }
        .footer-bottom .footer-links a:hover {
            color: #fff;
            opacity: 1;
        }
        .footer-bottom .sep {
            color: rgba(255, 255, 255, 0.25);
        }

        /* ===== Back to top ===== */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: var(--shadow-md);
            z-index: 500;
            transition: all var(--transition);
            opacity: 0;
            pointer-events: none;
            border: none;
        }
        .back-to-top.show {
            opacity: 1;
            pointer-events: auto;
        }
        .back-to-top:hover {
            background: var(--color-primary-dark);
            box-shadow: var(--shadow-lg);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .feature-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-inner {
                gap: 32px;
            }
            .hero h1 {
                font-size: 32px;
            }
        }

        @media (max-width: 767px) {
            .main-nav {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .hero {
                padding-top: calc(var(--nav-height) + 24px);
                padding-bottom: 32px;
            }
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat .stat-num {
                font-size: 22px;
            }
            .hero-visual .floating-badge {
                left: 12px;
                bottom: 12px;
                font-size: 12px;
                padding: 10px 14px;
            }
            .function-block {
                grid-template-columns: 1fr;
                gap: 24px;
                margin-bottom: 32px;
            }
            .function-block.reverse {
                direction: ltr;
            }
            .brand-intro {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .brand-img {
                position: static;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .review-grid {
                grid-template-columns: 1fr;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .subscribe-card {
                grid-template-columns: 1fr;
                padding: 32px 24px;
                gap: 24px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input {
                min-width: auto;
                width: 100%;
            }
            .ticker-label {
                display: none;
            }
            .section {
                padding: 36px 0;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .back-to-top {
                bottom: 16px;
                right: 16px;
                width: 40px;
                height: 40px;
                font-size: 16px;
            }
        }

        @media (max-width: 520px) {
            .feature-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .feature-card {
                padding: 16px 10px;
                min-height: 120px;
            }
            .feature-card .feature-icon {
                width: 38px;
                height: 38px;
                font-size: 18px;
            }
            .feature-card h3 {
                font-size: 13px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero h1 {
                font-size: 24px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #B33A3A;
            --color-primary-dark: #9C2F2F;
            --color-primary-light: #C55A5A;
            --color-accent: #D9A441;
            --color-accent-soft: #F0E0C0;
            --color-text: #2F2A26;
            --color-text-muted: #6B625C;
            --color-text-weak: #9A9088;
            --color-bg: #FAF6F0;
            --color-card: #FFFFFF;
            --color-border: #E5DCD3;
            --color-footer: #2C2622;
            --color-footer-text: #D8D0C8;
            --color-table-header: #F5EFE8;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Source Han Sans SC', 'Helvetica Neue', Arial, sans-serif;
            --font-serif: 'Source Han Serif SC', 'Noto Serif CJK SC', 'Songti SC', 'SimSun', serif;
            --font-mono: 'DIN Alternate', 'SF Mono', 'Roboto Mono', 'Courier New', monospace;
            --container-width: 1200px;
            --nav-height: 80px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-serif);
            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;
            padding-top: var(--nav-height);
        }

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

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

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

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

        ul {
            list-style: none;
        }

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

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

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

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

        /* Header/Nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border);
            z-index: 1000;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: baseline;
            gap: 6px;
            flex-shrink: 0;
        }

        .logo a {
            display: flex;
            align-items: baseline;
            gap: 6px;
            font-family: var(--font-sans);
            font-weight: 700;
            font-size: 21px;
            color: var(--color-text);
        }

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

        .logo .logo-en {
            font-size: 12px;
            font-weight: 400;
            color: var(--color-text-weak);
            letter-spacing: 0.03em;
        }

        .logo .logo-dot {
            color: var(--color-primary);
            font-size: 24px;
            font-weight: 700;
            line-height: 1;
        }

        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 8px;
            align-items: center;
        }

        .main-nav a {
            display: block;
            padding: 10px 16px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.06);
        }

        .main-nav a.active {
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.1);
            font-weight: 600;
        }

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

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

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: #fff;
            transition: all var(--transition);
        }

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

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

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

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-md);
            padding: 16px 24px;
            z-index: 999;
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu ul {
            list-style: none;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.06);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            text-decoration: none;
        }

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

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

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

        .btn-outline:hover {
            background: rgba(179, 58, 58, 0.06);
            color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: var(--radius-sm);
        }

        /* Breadcrumb */
        .breadcrumb-nav {
            padding: 24px 0 12px;
            font-family: var(--font-sans);
            font-size: 14px;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-nav a {
            color: var(--color-text-muted);
            transition: color var(--transition);
        }

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

        .breadcrumb-nav .separator {
            color: var(--color-text-weak);
        }

        .breadcrumb-nav .current {
            color: var(--color-text);
            font-weight: 500;
        }

        /* Category Header */
        .category-header {
            padding: 24px 0 32px;
            background: linear-gradient(180deg, #F5EDE4 0%, var(--color-bg) 100%);
            border-bottom: 1px solid var(--color-border);
        }

        .category-header .h1-area h1 {
            font-family: var(--font-sans);
            font-size: 40px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .category-header .h1-area p {
            font-size: 17px;
            color: var(--color-text-muted);
            max-width: 800px;
            line-height: 1.9;
        }

        .category-header .header-meta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 16px;
            font-family: var(--font-sans);
            font-size: 14px;
            color: var(--color-text-weak);
        }

        .category-header .header-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid var(--color-border);
        }

        /* Category Description Section */
        .category-desc-section {
            padding: 40px 0 32px;
        }

        .category-desc-section .desc-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            box-shadow: var(--shadow-sm);
        }

        .category-desc-section .desc-card h2 {
            font-family: var(--font-sans);
            font-size: 22px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
        }

        .category-desc-section .desc-card p {
            color: var(--color-text-muted);
            line-height: 2;
            margin-bottom: 12px;
        }

        .category-desc-section .desc-card p:last-child {
            margin-bottom: 0;
        }

        /* Filter Toolbar */
        .filter-toolbar {
            padding: 24px 0 32px;
        }

        .filter-toolbar .filter-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }

        .filter-toolbar .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-toolbar .filter-label {
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-muted);
        }

        .filter-toolbar .filter-btn {
            padding: 8px 16px;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text);
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 20px;
            transition: all var(--transition);
        }

        .filter-toolbar .filter-btn:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.04);
        }

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

        /* Article List */
        .article-list-section {
            padding: 0 0 48px;
        }

        .article-list-section .list-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }

        .article-list-section .list-header h2 {
            font-family: var(--font-sans);
            font-size: 24px;
            font-weight: 600;
            color: var(--color-text);
        }

        .article-list-section .list-header .result-count {
            font-family: var(--font-sans);
            font-size: 14px;
            color: var(--color-text-weak);
        }

        .article-card {
            display: flex;
            gap: 20px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 20px;
            margin-bottom: 16px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .article-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(179, 58, 58, 0.2);
        }

        .article-card .card-thumb {
            flex-shrink: 0;
            width: 220px;
            height: 150px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #f0ebe5;
        }

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

        .article-card .card-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .article-card .card-content h3 {
            font-family: var(--font-sans);
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.5;
            margin-bottom: 8px;
            transition: color var(--transition);
        }

        .article-card:hover .card-content h3 {
            color: var(--color-primary);
        }

        .article-card .card-content h3 a {
            color: inherit;
        }

        .article-card .card-content h3 a:hover {
            color: var(--color-primary);
        }

        .article-card .card-content .card-excerpt {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .article-card .card-content .card-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: auto;
        }

        .article-card .card-content .card-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(179, 58, 58, 0.08);
            color: var(--color-primary);
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 500;
            border-radius: 12px;
        }

        .article-card .card-content .card-date,
        .article-card .card-content .card-read {
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text-weak);
        }

        /* View More */
        .view-more-section {
            padding: 16px 0 40px;
            text-align: center;
        }

        .view-more-section .btn {
            min-width: 200px;
        }

        /* Popular Tags */
        .popular-tags-section {
            padding: 32px 0;
        }

        .popular-tags-section h2 {
            font-family: var(--font-sans);
            font-size: 22px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
        }

        .popular-tags-section .tags-container {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .popular-tags-section .tag-chip {
            display: inline-block;
            padding: 8px 18px;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 20px;
            font-family: var(--font-sans);
            font-size: 14px;
            color: var(--color-text-muted);
            transition: all var(--transition);
            text-decoration: none;
        }

        .popular-tags-section .tag-chip:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.04);
        }

        .popular-tags-section .tag-chip.hot {
            background: rgba(217, 164, 65, 0.12);
            border-color: var(--color-accent);
            color: #8B6A1F;
        }

        /* Related Topics */
        .related-topics-section {
            padding: 32px 0;
            background: #F5EDE4;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .related-topics-section h2 {
            font-family: var(--font-sans);
            font-size: 22px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 20px;
        }

        .topics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }

        .topic-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .topic-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(179, 58, 58, 0.2);
        }

        .topic-card h3 {
            font-family: var(--font-sans);
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }

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

        .topic-card a {
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
        }

        /* Subscribe CTA */
        .subscribe-cta-section {
            padding: 48px 0;
        }

        .subscribe-cta-section .cta-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            padding: 40px 48px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: center;
            justify-content: space-between;
        }

        .subscribe-cta-section .cta-text h2 {
            font-family: var(--font-sans);
            font-size: 26px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 12px;
        }

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

        .subscribe-cta-section .cta-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }

        .subscribe-cta-section .cta-form input {
            padding: 12px 20px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-family: var(--font-sans);
            font-size: 15px;
            min-width: 260px;
            transition: all var(--transition);
            background: #fff;
            color: var(--color-text);
        }

        .subscribe-cta-section .cta-form input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(179, 58, 58, 0.08);
        }

        /* Bottom Info Section */
        .bottom-info-section {
            padding: 24px 0 48px;
        }

        .bottom-info-section .info-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            box-shadow: var(--shadow-sm);
        }

        .bottom-info-section .info-card p {
            color: var(--color-text-muted);
            line-height: 2;
            margin-bottom: 14px;
        }

        .bottom-info-section .info-card p:last-child {
            margin-bottom: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--color-footer);
            color: var(--color-footer-text);
            padding: 56px 0 24px;
            margin-top: 0;
        }

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

        .site-footer h3 {
            font-family: var(--font-sans);
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .site-footer h4 {
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .site-footer p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-footer-text);
        }

        .site-footer .footer-brand p {
            margin-bottom: 12px;
            max-width: 360px;
        }

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

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

        .site-footer .footer-col ul li a {
            color: var(--color-footer-text);
            font-size: 14px;
            transition: color var(--transition);
            font-family: var(--font-sans);
        }

        .site-footer .footer-col ul li a:hover {
            color: #fff;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-footer-text);
        }

        .site-footer .footer-links a {
            color: var(--color-footer-text);
            font-size: 13px;
            transition: color var(--transition);
        }

        .site-footer .footer-links a:hover {
            color: #fff;
        }

        .site-footer .footer-links .sep {
            color: rgba(255, 255, 255, 0.25);
            margin: 0 4px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .article-card .card-thumb {
                width: 180px;
                height: 130px;
            }

            .category-header .h1-area h1 {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .nav-cta {
                display: none;
            }

            .container {
                padding: 0 16px;
            }

            .category-header .h1-area h1 {
                font-size: 28px;
            }

            .category-header {
                padding: 20px 0 24px;
            }

            .article-card {
                flex-direction: column;
            }

            .article-card .card-thumb {
                width: 100%;
                height: 180px;
            }

            .subscribe-cta-section .cta-card {
                padding: 24px 20px;
                flex-direction: column;
                align-items: flex-start;
            }

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

            .subscribe-cta-section .cta-form {
                width: 100%;
            }

            .filter-toolbar .filter-card {
                padding: 16px;
                flex-direction: column;
                align-items: flex-start;
            }

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

            .category-desc-section .desc-card,
            .bottom-info-section .info-card {
                padding: 20px;
            }

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

        @media (max-width: 520px) {
            :root {
                --nav-height: 64px;
            }

            body {
                padding-top: 64px;
            }

            .logo a {
                font-size: 18px;
            }

            .logo .logo-en {
                font-size: 10px;
            }

            .category-header .h1-area h1 {
                font-size: 24px;
            }

            .article-card .card-content h3 {
                font-size: 16px;
            }

            .article-card .card-thumb {
                height: 160px;
            }

            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #B33A3A;
            --color-primary-dark: #9C2F2F;
            --color-primary-light: #C55A5A;
            --color-accent: #D9A441;
            --color-accent-soft: #F0E0C0;
            --color-text: #2F2A26;
            --color-text-muted: #6B625C;
            --color-text-weak: #9A9088;
            --color-bg: #FAF6F0;
            --color-card: #FFFFFF;
            --color-border: #E5DCD3;
            --color-footer: #2C2622;
            --color-footer-text: #D8D0C8;
            --color-table-header: #F5EFE8;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Source Han Sans SC', 'Helvetica Neue', Arial, sans-serif;
            --font-serif: 'Source Han Serif SC', 'Noto Serif CJK SC', 'Songti SC', 'SimSun', serif;
            --font-mono: 'DIN Alternate', 'SF Mono', 'Roboto Mono', 'Courier New', monospace;
            --container-width: 1200px;
            --nav-height: 80px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-serif);
            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;
            padding-top: var(--nav-height);
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: inherit;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border);
            z-index: 1000;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: baseline;
            gap: 6px;
            flex-shrink: 0;
        }
        .logo a {
            display: flex;
            align-items: baseline;
            gap: 6px;
            font-family: var(--font-sans);
            font-weight: 700;
            font-size: 21px;
            color: var(--color-text);
        }
        .logo a:hover {
            color: var(--color-primary);
        }
        .logo .logo-en {
            font-size: 12px;
            font-weight: 400;
            color: var(--color-text-weak);
            letter-spacing: 0.03em;
        }
        .logo .logo-dot {
            color: var(--color-primary);
            font-size: 24px;
            font-weight: 700;
            line-height: 1;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 8px;
            align-items: center;
            margin: 0;
            padding: 0;
        }
        .main-nav a {
            display: block;
            padding: 10px 16px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.06);
        }
        .main-nav a.active {
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.1);
            font-weight: 600;
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-cta .btn {
            padding: 10px 20px;
            font-size: 14px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: #fff;
            transition: all var(--transition);
        }
        .hamburger:hover {
            border-color: var(--color-primary);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            transform: translateX(4px);
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn-outline:hover {
            background: rgba(179, 58, 58, 0.08);
            color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: var(--radius-sm);
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
            border-radius: var(--radius-md);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-section {
            padding: 28px 0 0;
            background: transparent;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 14px;
            color: var(--color-text-muted);
        }
        .breadcrumb-nav a {
            color: var(--color-text-muted);
        }
        .breadcrumb-nav a:hover {
            color: var(--color-primary);
        }
        .breadcrumb-nav .sep {
            color: var(--color-text-weak);
        }
        .breadcrumb-nav .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        /* ===== Category Header ===== */
        .category-header {
            padding: 24px 0 16px;
            background: transparent;
        }
        .category-header h1 {
            font-family: var(--font-sans);
            font-size: 36px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 12px;
            line-height: 1.3;
        }
        .category-header .category-desc {
            font-size: 17px;
            line-height: 1.9;
            color: var(--color-text-muted);
            max-width: 860px;
            margin: 0;
        }

        /* ===== Filter Toolbar ===== */
        .filter-toolbar {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 18px 20px;
            margin: 20px 0 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
        }
        .filter-toolbar .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-toolbar .filter-label {
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-muted);
            white-space: nowrap;
        }
        .filter-toolbar select,
        .filter-toolbar input {
            padding: 8px 12px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            background: #fff;
            font-size: 13px;
            color: var(--color-text);
            font-family: var(--font-sans);
            min-width: 120px;
            transition: all var(--transition);
        }
        .filter-toolbar select:focus,
        .filter-toolbar input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(179, 58, 58, 0.1);
            outline: none;
        }
        .filter-toolbar .btn-filter {
            padding: 8px 20px;
            font-size: 13px;
            border-radius: var(--radius-sm);
            background: var(--color-primary);
            color: #fff;
            font-weight: 500;
            font-family: var(--font-sans);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-toolbar .btn-filter:hover {
            background: var(--color-primary-dark);
        }
        .filter-toolbar .btn-reset {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--color-text-muted);
            font-weight: 500;
            font-family: var(--font-sans);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-toolbar .btn-reset:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        /* ===== Data List Cards ===== */
        .data-list-section {
            padding: 8px 0 40px;
        }
        .data-list-section .section-heading {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }
        .data-list-section .section-heading h2 {
            font-family: var(--font-sans);
            font-size: 24px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0;
        }
        .data-list-section .section-heading .result-count {
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text-weak);
        }
        .data-card-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .data-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 22px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .data-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: rgba(179, 58, 58, 0.15);
        }
        .data-card .card-thumb {
            flex-shrink: 0;
            width: 180px;
            height: 120px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-table-header);
        }
        .data-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .data-card .card-body {
            flex: 1;
            min-width: 0;
        }
        .data-card .card-title {
            font-family: var(--font-sans);
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 8px;
            line-height: 1.4;
            transition: color var(--transition);
        }
        .data-card:hover .card-title {
            color: var(--color-primary);
        }
        .data-card .card-title a {
            color: inherit;
        }
        .data-card .card-title a:hover {
            color: var(--color-primary);
        }
        .data-card .card-summary {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin: 0 0 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .data-card .data-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 18px;
            margin-bottom: 12px;
            padding: 10px 14px;
            background: var(--color-bg);
            border-radius: var(--radius-sm);
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--color-text);
        }
        .data-card .data-strip .data-item {
            white-space: nowrap;
        }
        .data-card .data-strip .data-item .label {
            color: var(--color-text-weak);
            font-family: var(--font-sans);
            font-size: 12px;
            margin-right: 4px;
        }
        .data-card .data-strip .data-item .value-up {
            color: var(--color-primary);
            font-weight: 600;
        }
        .data-card .data-strip .data-item .value-down {
            color: #2D7A3D;
            font-weight: 600;
        }
        .data-card .data-strip .data-item .value-flat {
            color: var(--color-text-muted);
            font-weight: 500;
        }
        .data-card .card-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px 16px;
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text-weak);
        }
        .data-card .card-meta .tag {
            display: inline-block;
            padding: 3px 10px;
            background: rgba(217, 164, 65, 0.14);
            color: #8B6914;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            white-space: nowrap;
        }
        .data-card .card-meta .tag.primary {
            background: rgba(179, 58, 58, 0.1);
            color: var(--color-primary);
        }
        .data-card .card-meta .tag.accent {
            background: rgba(217, 164, 65, 0.14);
            color: #8B6914;
        }
        .data-card .card-meta .date,
        .data-card .card-meta .views {
            white-space: nowrap;
        }

        /* ===== Hot Tags ===== */
        .hot-tags-section {
            padding: 24px 0;
            background: transparent;
        }
        .hot-tags-section .tags-wrapper {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
        }
        .hot-tags-section .tags-title {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 12px;
        }
        .hot-tags-section .tags-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .hot-tags-section .tags-list a {
            display: inline-block;
            padding: 6px 14px;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-muted);
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            transition: all var(--transition);
        }
        .hot-tags-section .tags-list a:hover {
            color: var(--color-primary);
            border-color: var(--color-primary);
            background: rgba(179, 58, 58, 0.05);
        }

        /* ===== Data Entry Cards ===== */
        .data-entry-section {
            padding: 32px 0;
            background: transparent;
        }
        .data-entry-section .section-heading {
            margin-bottom: 20px;
        }
        .data-entry-section .section-heading h2 {
            font-family: var(--font-sans);
            font-size: 24px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0;
        }
        .data-entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .data-entry-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            text-align: left;
        }
        .data-entry-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: rgba(179, 58, 58, 0.15);
        }
        .data-entry-card .entry-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(179, 58, 58, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--color-primary);
            margin-bottom: 16px;
        }
        .data-entry-card h3 {
            font-family: var(--font-sans);
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .data-entry-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin: 0 0 12px;
        }
        .data-entry-card .entry-link {
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition);
        }
        .data-entry-card .entry-link:hover {
            gap: 8px;
            color: var(--color-primary-dark);
        }

        /* ===== Related Topics ===== */
        .related-topics-section {
            padding: 32px 0 24px;
            background: transparent;
        }
        .related-topics-section .section-heading {
            margin-bottom: 20px;
        }
        .related-topics-section .section-heading h2 {
            font-family: var(--font-sans);
            font-size: 24px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0;
        }
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .topic-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 22px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(217, 164, 65, 0.3);
        }
        .topic-card .topic-tag {
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 0.03em;
        }
        .topic-card h3 {
            font-family: var(--font-sans);
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0;
            line-height: 1.4;
        }
        .topic-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin: 0;
            flex: 1;
        }
        .topic-card a {
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            align-self: flex-start;
        }
        .topic-card a:hover {
            color: var(--color-primary-dark);
        }

        /* ===== Subscribe CTA ===== */
        .subscribe-section {
            padding: 40px 0 56px;
            background: transparent;
        }
        .subscribe-box {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            padding: 40px 48px;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .subscribe-box .subscribe-text {
            flex: 1;
            min-width: 260px;
        }
        .subscribe-box .subscribe-text h2 {
            font-family: var(--font-sans);
            font-size: 24px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 8px;
        }
        .subscribe-box .subscribe-text p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin: 0;
        }
        .subscribe-box .subscribe-form {
            display: flex;
            gap: 12px;
            align-items: center;
            flex-wrap: wrap;
        }
        .subscribe-box .subscribe-form input {
            padding: 12px 16px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-family: var(--font-sans);
            color: var(--color-text);
            min-width: 240px;
            background: var(--color-bg);
            transition: all var(--transition);
        }
        .subscribe-box .subscribe-form input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(179, 58, 58, 0.1);
            outline: none;
            background: #fff;
        }
        .subscribe-box .subscribe-form .btn-primary {
            padding: 12px 28px;
            font-size: 14px;
            white-space: nowrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-footer);
            color: var(--color-footer-text);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer h3 {
            font-family: var(--font-sans);
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
        }
        .site-footer h4 {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 12px;
        }
        .site-footer p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-footer-text);
            margin: 0 0 8px;
        }
        .site-footer ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .site-footer ul li {
            margin-bottom: 8px;
        }
        .site-footer ul a {
            font-size: 14px;
            color: var(--color-footer-text);
            transition: color var(--transition);
        }
        .site-footer ul a:hover {
            color: #fff;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(216, 208, 200, 0.2);
            padding-top: 20px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-footer-text);
        }
        .site-footer .footer-links .sep {
            color: rgba(216, 208, 200, 0.4);
        }
        .site-footer .footer-links a {
            color: var(--color-footer-text);
            transition: color var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: #fff;
        }
        .footer-brand p {
            max-width: 320px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .main-nav {
                display: none;
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--color-border);
                padding: 12px 24px;
                box-shadow: var(--shadow-md);
                z-index: 999;
            }
            .main-nav.open {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }
            .main-nav a {
                padding: 12px 16px;
                width: 100%;
                text-align: left;
            }
            .hamburger {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
            .data-entry-grid,
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-card .card-thumb {
                width: 140px;
                height: 100px;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            .category-header h1 {
                font-size: 28px;
            }
            .category-header .category-desc {
                font-size: 15px;
            }
            .filter-toolbar {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
                padding: 16px;
            }
            .filter-toolbar .filter-group {
                flex-wrap: wrap;
            }
            .data-card {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }
            .data-card .card-thumb {
                width: 100%;
                height: 160px;
            }
            .data-card .card-title {
                font-size: 16px;
            }
            .data-card .data-strip {
                font-size: 12px;
                gap: 6px 12px;
                padding: 8px 10px;
                flex-wrap: wrap;
            }
            .data-card .card-meta {
                font-size: 12px;
                gap: 6px 10px;
            }
            .data-entry-grid,
            .topics-grid {
                grid-template-columns: 1fr;
            }
            .subscribe-box {
                padding: 24px 20px;
                flex-direction: column;
                align-items: stretch;
                gap: 16px;
            }
            .subscribe-box .subscribe-form {
                flex-direction: column;
                align-items: stretch;
            }
            .subscribe-box .subscribe-form input {
                min-width: auto;
                width: 100%;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
            .site-footer .footer-links {
                font-size: 12px;
                gap: 6px;
                flex-wrap: wrap;
            }
        }
        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .site-footer .footer-brand {
                grid-column: auto;
            }
            .category-header h1 {
                font-size: 24px;
            }
            .data-card .data-strip {
                flex-direction: column;
                gap: 4px;
            }
            .data-card .card-meta .tag {
                font-size: 11px;
                padding: 2px 8px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #B33A3A;
            --color-primary-dark: #9C2F2F;
            --color-primary-light: #C55A5A;
            --color-accent: #D9A441;
            --color-accent-soft: #F0E0C0;
            --color-text: #2F2A26;
            --color-text-muted: #6B625C;
            --color-text-weak: #9A9088;
            --color-bg: #FAF6F0;
            --color-card: #FFFFFF;
            --color-border: #E5DCD3;
            --color-footer: #2C2622;
            --color-footer-text: #D8D0C8;
            --color-table-header: #F5EFE8;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Source Han Sans SC', 'Helvetica Neue', Arial, sans-serif;
            --font-serif: 'Source Han Serif SC', 'Noto Serif CJK SC', 'Songti SC', 'SimSun', serif;
            --font-mono: 'DIN Alternate', 'SF Mono', 'Roboto Mono', 'Courier New', monospace;
            --container-width: 1200px;
            --nav-height: 80px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-serif);
            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-top: var(--nav-height);
        }

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

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

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

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

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

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

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

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border);
            z-index: 1000;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: baseline;
            gap: 6px;
            flex-shrink: 0;
        }

        .logo a {
            display: flex;
            align-items: baseline;
            gap: 6px;
            font-family: var(--font-sans);
            font-weight: 700;
            font-size: 21px;
            color: var(--color-text);
        }

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

        .logo .logo-en {
            font-size: 12px;
            font-weight: 400;
            color: var(--color-text-weak);
            letter-spacing: 0.03em;
        }

        .logo .logo-dot {
            color: var(--color-primary);
            font-size: 24px;
            font-weight: 700;
            line-height: 1;
        }

        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 8px;
            align-items: center;
            margin: 0;
            padding: 0;
        }

        .main-nav a {
            display: block;
            padding: 10px 16px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.06);
        }

        .main-nav a.active {
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.1);
            font-weight: 600;
        }

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

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

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: #fff;
            transition: all var(--transition);
        }

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

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

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

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
            text-align: center;
            line-height: 1.5;
            border: 1px solid transparent;
        }

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

        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: #fff;
            box-shadow: 0 4px 14px rgba(179, 58, 58, 0.35);
        }

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

        .btn-outline:hover {
            background: rgba(179, 58, 58, 0.08);
            border-color: var(--color-primary-dark);
            color: var(--color-primary-dark);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: var(--radius-sm);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding: 24px 0 12px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 14px;
            color: var(--color-text-weak);
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li+li::before {
            content: '/';
            color: var(--color-border);
            font-size: 13px;
        }

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

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

        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
        }

        /* ===== Category Header ===== */
        .category-header {
            padding: 16px 0 36px;
        }

        .category-header h1 {
            font-family: var(--font-sans);
            font-size: 36px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 16px;
            line-height: 1.3;
        }

        .category-header .category-desc {
            font-size: 17px;
            color: var(--color-text-muted);
            line-height: 1.9;
            max-width: 800px;
            margin: 0;
        }

        .category-header .category-meta {
            display: flex;
            gap: 24px;
            margin-top: 12px;
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text-weak);
        }

        .category-header .category-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== Filter Toolbar ===== */
        .filter-toolbar {
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
            margin-bottom: 32px;
        }

        .filter-toolbar .filter-label {
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-muted);
            display: block;
            margin-bottom: 10px;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .filter-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .filter-btn {
            padding: 8px 18px;
            border-radius: 20px;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-muted);
            background: #fff;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            cursor: pointer;
        }

        .filter-btn:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.04);
        }

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

        /* ===== Strategy List (横向大卡片) ===== */
        .strategy-list {
            padding: 16px 0 40px;
        }

        .strategy-card {
            display: flex;
            gap: 28px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            padding: 0;
            margin-bottom: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .strategy-card .card-thumb {
            flex: 0 0 300px;
            min-height: 220px;
            position: relative;
            overflow: hidden;
            background: #f0ebe5;
        }

        .strategy-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
        }

        .strategy-card .card-body {
            flex: 1;
            padding: 24px 28px 24px 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .strategy-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 12px;
        }

        .strategy-card .card-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 500;
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.08);
            transition: all var(--transition);
        }

        .strategy-card .card-tag:hover {
            background: rgba(179, 58, 58, 0.16);
        }

        .strategy-card .card-tag.tag-accent {
            color: #8B6F2E;
            background: rgba(217, 164, 65, 0.12);
        }

        .strategy-card .card-title {
            font-family: var(--font-sans);
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 10px;
            line-height: 1.45;
            transition: color var(--transition);
        }

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

        .strategy-card .card-abstract {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin: 0 0 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .strategy-card .card-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text-weak);
        }

        .strategy-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* ===== Related Topics ===== */
        .related-topics {
            padding: 40px 0;
            background: #fff;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .section-heading {
            margin-bottom: 28px;
        }

        .section-heading h2 {
            font-family: var(--font-sans);
            font-size: 26px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0;
            line-height: 1.3;
        }

        .section-heading p {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 8px 0 0;
        }

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

        .topic-card {
            display: block;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all var(--transition);
            color: var(--color-text);
        }

        .topic-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary-light);
            color: var(--color-text);
            transform: translateY(-2px);
        }

        .topic-card .topic-icon {
            font-size: 28px;
            margin-bottom: 12px;
            display: block;
        }

        .topic-card h3 {
            font-family: var(--font-sans);
            font-size: 17px;
            font-weight: 600;
            margin: 0 0 8px;
            color: var(--color-text);
        }

        .topic-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0 0 12px;
            line-height: 1.7;
        }

        .topic-card .topic-link {
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 500;
            color: var(--color-primary);
        }

        .topic-card:hover .topic-link {
            color: var(--color-primary-dark);
        }

        /* ===== Tags Section ===== */
        .tags-section {
            padding: 40px 0;
        }

        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .tag-pill {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 24px;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-muted);
            background: #fff;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }

        .tag-pill:hover {
            color: var(--color-primary);
            border-color: var(--color-primary);
            background: rgba(179, 58, 58, 0.04);
        }

        .tag-pill.tag-hot {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .tag-pill.tag-hot:hover {
            background: var(--color-primary-dark);
            color: #fff;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 48px 0;
            background: #fff;
            border-top: 1px solid var(--color-border);
        }

        .cta-card {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            padding: 40px 48px;
            display: flex;
            gap: 40px;
            align-items: center;
            flex-wrap: wrap;
        }

        .cta-card .cta-text {
            flex: 1;
            min-width: 280px;
        }

        .cta-card .cta-text h2 {
            font-family: var(--font-sans);
            font-size: 24px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 10px;
        }

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

        .cta-card .cta-form {
            display: flex;
            gap: 12px;
            flex-shrink: 0;
            min-width: 320px;
        }

        .cta-card .cta-form input {
            flex: 1;
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            font-family: var(--font-sans);
            font-size: 14px;
            color: var(--color-text);
            background: #fff;
            transition: all var(--transition);
        }

        .cta-card .cta-form input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(179, 58, 58, 0.1);
        }

        /* ===== Bottom Note ===== */
        .bottom-note {
            padding: 40px 0 60px;
            border-top: 1px solid var(--color-border);
        }

        .bottom-note .note-content {
            max-width: 800px;
        }

        .bottom-note .note-content h2 {
            font-family: var(--font-sans);
            font-size: 22px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 16px;
        }

        .bottom-note .note-content p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.9;
            margin: 0 0 12px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-footer);
            color: var(--color-footer-text);
            padding: 56px 0 0;
            margin-top: 0;
        }

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

        .site-footer h3 {
            font-family: var(--font-sans);
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
        }

        .site-footer h4 {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 16px;
        }

        .site-footer p {
            font-size: 14px;
            line-height: 1.8;
            margin: 0 0 8px;
            color: var(--color-footer-text);
        }

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

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

        .site-footer ul li a {
            color: var(--color-footer-text);
            font-size: 14px;
            transition: color var(--transition);
        }

        .site-footer ul li a:hover {
            color: #fff;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 20px 0;
        }

        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--color-footer-text);
        }

        .site-footer .footer-links a {
            color: var(--color-footer-text);
        }

        .site-footer .footer-links a:hover {
            color: #fff;
        }

        .site-footer .footer-links .sep {
            color: rgba(255, 255, 255, 0.3);
            margin: 0 4px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }

            .strategy-card .card-thumb {
                flex-basis: 240px;
                min-height: 180px;
            }

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

        @media (max-width: 768px) {
            body {
                padding-top: 64px;
            }

            :root {
                --nav-height: 64px;
            }

            .site-header .container {
                flex-wrap: wrap;
                gap: 8px;
                padding: 0 16px;
            }

            .logo a {
                font-size: 18px;
            }

            .logo .logo-en {
                font-size: 10px;
            }

            .main-nav {
                display: none;
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                padding: 16px;
                z-index: 999;
            }

            .main-nav.open {
                display: block;
            }

            .main-nav ul {
                flex-direction: column;
                gap: 4px;
            }

            .main-nav a {
                padding: 12px 16px;
                font-size: 15px;
                display: block;
                text-align: left;
            }

            .nav-cta {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .category-header h1 {
                font-size: 28px;
            }

            .category-header .category-desc {
                font-size: 15px;
            }

            .strategy-card {
                flex-direction: column;
                gap: 0;
            }

            .strategy-card .card-thumb {
                flex-basis: auto;
                min-height: 200px;
                position: relative;
            }

            .strategy-card .card-thumb img {
                position: absolute;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                object-fit: cover;
            }

            .strategy-card .card-body {
                padding: 20px;
            }

            .strategy-card .card-title {
                font-size: 18px;
            }

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

            .cta-card {
                padding: 28px 24px;
                flex-direction: column;
                gap: 20px;
            }

            .cta-card .cta-form {
                flex-direction: column;
                min-width: auto;
                width: 100%;
            }

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

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

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

            .category-header h1 {
                font-size: 24px;
            }

            .category-header .category-meta {
                flex-direction: column;
                gap: 6px;
            }

            .filter-group {
                gap: 8px;
            }

            .filter-btn {
                padding: 6px 14px;
                font-size: 12px;
            }

            .strategy-card .card-thumb {
                min-height: 160px;
            }

            .strategy-card .card-body {
                padding: 16px;
            }

            .strategy-card .card-title {
                font-size: 16px;
            }

            .strategy-card .card-abstract {
                font-size: 14px;
                -webkit-line-clamp: 4;
            }

            .strategy-card .card-meta {
                flex-wrap: wrap;
                gap: 10px;
                font-size: 12px;
            }

            .cta-card .cta-text h2 {
                font-size: 20px;
            }

            .bottom-note .note-content h2 {
                font-size: 19px;
            }

            .site-footer .footer-links {
                font-size: 12px;
                gap: 4px;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #B33A3A;
            --color-primary-dark: #9C2F2F;
            --color-primary-light: #C55A5A;
            --color-accent: #D9A441;
            --color-accent-soft: #F0E0C0;
            --color-text: #2F2A26;
            --color-text-muted: #6B625C;
            --color-text-weak: #9A9088;
            --color-bg: #FAF6F0;
            --color-card: #FFFFFF;
            --color-border: #E5DCD3;
            --color-footer: #2C2622;
            --color-footer-text: #D8D0C8;
            --color-table-header: #F5EFE8;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Source Han Sans SC', 'Helvetica Neue', Arial, sans-serif;
            --font-serif: 'Source Han Serif SC', 'Noto Serif CJK SC', 'Songti SC', 'SimSun', serif;
            --font-mono: 'DIN Alternate', 'SF Mono', 'Roboto Mono', 'Courier New', monospace;
            --container-width: 1200px;
            --nav-height: 80px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-serif);
            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;
            padding-top: var(--nav-height);
        }

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

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

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

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

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

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

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

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border);
            z-index: 1000;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: baseline;
            gap: 6px;
            flex-shrink: 0;
        }

        .logo a {
            display: flex;
            align-items: baseline;
            gap: 6px;
            font-family: var(--font-sans);
            font-weight: 700;
            font-size: 21px;
            color: var(--color-text);
        }

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

        .logo .logo-en {
            font-size: 12px;
            font-weight: 400;
            color: var(--color-text-weak);
            letter-spacing: 0.03em;
        }

        .logo .logo-dot {
            color: var(--color-primary);
            font-size: 24px;
            font-weight: 700;
            line-height: 1;
        }

        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 8px;
            align-items: center;
            margin: 0;
            padding: 0;
        }

        .main-nav a {
            display: block;
            padding: 10px 16px;
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.06);
        }

        .main-nav a.active {
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.1);
            font-weight: 600;
        }

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-md);
            padding: 12px 28px;
            transition: all var(--transition);
            text-align: center;
            line-height: 1.5;
            white-space: nowrap;
            cursor: pointer;
        }

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

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

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-outline {
            background: rgba(179, 58, 58, 0.04);
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }

        .btn-outline:hover {
            background: rgba(179, 58, 58, 0.1);
            color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
            border-radius: var(--radius-sm);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: #fff;
            transition: all var(--transition);
        }

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

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

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

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Breadcrumb / Page Header ===== */
        .page-header {
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 40px 0 32px;
            margin-bottom: 40px;
        }

        .breadcrumb-nav {
            font-family: var(--font-sans);
            font-size: 14px;
            color: var(--color-text-weak);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--color-text-weak);
        }

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

        .breadcrumb-nav .sep {
            color: var(--color-text-weak);
        }

        .breadcrumb-nav .current {
            color: var(--color-primary);
            font-weight: 600;
        }

        .page-header h1 {
            font-family: var(--font-sans);
            font-size: 36px;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .page-header .lead {
            font-size: 17px;
            color: var(--color-text-muted);
            line-height: 1.9;
            max-width: 860px;
        }

        /* ===== Filter Toolbar ===== */
        .filter-toolbar {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 48px;
        }

        .filter-toolbar .filter-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: flex-end;
        }

        .filter-toolbar .filter-group {
            flex: 1;
            min-width: 180px;
        }

        .filter-toolbar .filter-group label {
            display: block;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-muted);
            margin-bottom: 6px;
        }

        .filter-toolbar select {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            background: #fff;
            font-family: var(--font-sans);
            font-size: 14px;
            color: var(--color-text);
            transition: all var(--transition);
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236B625C' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 38px;
        }

        .filter-toolbar select:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(179, 58, 58, 0.1);
            outline: none;
        }

        .filter-toolbar .filter-actions {
            display: flex;
            gap: 12px;
            align-items: center;
        }

        /* ===== Timeline / Case List ===== */
        .case-timeline {
            position: relative;
            padding-left: 0;
            margin-bottom: 48px;
        }

        .case-item {
            position: relative;
            padding-left: 42px;
            margin-bottom: 36px;
            padding-bottom: 0;
        }

        .case-item::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 28px;
            bottom: -36px;
            width: 2px;
            background: var(--color-border);
        }

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

        .case-item .case-dot {
            position: absolute;
            left: 0;
            top: 18px;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--color-primary);
            border: 4px solid #fff;
            box-shadow: 0 0 0 2px var(--color-primary);
            z-index: 1;
        }

        .case-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-wrap: wrap;
        }

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

        .case-card .case-thumb {
            width: 240px;
            min-height: 180px;
            flex-shrink: 0;
            background: #f0ebe5;
            overflow: hidden;
            position: relative;
        }

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

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

        .case-card .case-body {
            flex: 1;
            padding: 22px 26px;
            min-width: 260px;
        }

        .case-card .case-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            margin-bottom: 12px;
        }

        .case-card .case-date {
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--color-text-weak);
            margin-right: 6px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 3px 12px;
            border-radius: 20px;
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 500;
            line-height: 1.6;
            letter-spacing: 0.02em;
        }

        .badge-league {
            background: rgba(217, 164, 65, 0.15);
            color: #9A7310;
        }

        .badge-type {
            background: rgba(179, 58, 58, 0.08);
            color: var(--color-primary);
        }

        .case-card .case-title {
            font-family: var(--font-sans);
            font-size: 19px;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.45;
            margin-bottom: 10px;
            transition: color var(--transition);
        }

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

        .case-card .case-summary {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.85;
            margin-bottom: 14px;
        }

        .case-card .case-data {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            background: #FBF8F4;
            border-radius: var(--radius-sm);
            padding: 12px 16px;
        }

        .case-card .data-point {
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .case-card .data-point strong {
            font-weight: 700;
            color: var(--color-text);
        }

        .case-card .data-point .up {
            color: #C0392B;
            font-weight: 600;
        }

        .case-card .data-point .down {
            color: #27AE60;
            font-weight: 600;
        }

        /* ===== Tags ===== */
        .tag-cloud {
            margin-bottom: 48px;
        }

        .tag-cloud .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud .tag-item {
            display: inline-block;
            padding: 6px 16px;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 20px;
            font-family: var(--font-sans);
            font-size: 13px;
            color: var(--color-text-muted);
            transition: all var(--transition);
            cursor: pointer;
        }

        .tag-cloud .tag-item:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(179, 58, 58, 0.04);
        }

        .tag-cloud .tag-item.hot {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
        }

        /* ===== Related Topics ===== */
        .related-topics {
            margin-bottom: 48px;
        }

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

        .related-topics .topic-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: block;
            color: var(--color-text);
        }

        .related-topics .topic-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            color: var(--color-text);
        }

        .related-topics .topic-card .topic-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: rgba(179, 58, 58, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 22px;
            margin-bottom: 14px;
        }

        .related-topics .topic-card h3 {
            font-family: var(--font-sans);
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .related-topics .topic-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Section Title ===== */
        .section-title {
            font-family: var(--font-sans);
            font-size: 28px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.4;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 760px;
        }

        /* ===== Subscribe CTA ===== */
        .subscribe-cta {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: center;
            margin-bottom: 48px;
        }

        .subscribe-cta .cta-text {
            flex: 1;
            min-width: 280px;
        }

        .subscribe-cta .cta-text h2 {
            font-family: var(--font-sans);
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
        }

        .subscribe-cta .cta-text p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin-bottom: 0;
        }

        .subscribe-cta .cta-form {
            flex: 1;
            min-width: 280px;
        }

        .subscribe-cta .form-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .subscribe-cta input[type="email"] {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border: 2px solid var(--color-border);
            border-radius: var(--radius-md);
            background: #fff;
            font-family: var(--font-sans);
            font-size: 15px;
            color: var(--color-text);
            transition: all var(--transition);
        }

        .subscribe-cta input[type="email"]:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(179, 58, 58, 0.1);
            outline: none;
        }

        .subscribe-cta .btn {
            flex-shrink: 0;
        }

        /* ===== Bottom Note ===== */
        .bottom-note {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            margin-bottom: 48px;
        }

        .bottom-note h2 {
            font-family: var(--font-sans);
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .bottom-note p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.9;
            margin-bottom: 12px;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-footer);
            color: var(--color-footer-text);
            padding: 56px 0 0;
            font-family: var(--font-sans);
            font-size: 14px;
            line-height: 1.8;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 36px;
            padding-bottom: 36px;
        }

        .site-footer .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            font-family: var(--font-sans);
        }

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

        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            font-family: var(--font-sans);
        }

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

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

        .site-footer .footer-col ul li:last-child {
            margin-bottom: 0;
        }

        .site-footer .footer-col ul a {
            color: var(--color-footer-text);
            font-size: 13px;
            transition: color var(--transition);
        }

        .site-footer .footer-col ul a:hover {
            color: #fff;
        }

        .site-footer .footer-contact h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            font-family: var(--font-sans);
        }

        .site-footer .footer-contact p {
            font-size: 13px;
            color: var(--color-footer-text);
            line-height: 1.8;
            margin-bottom: 8px;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 18px 0;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 4px;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--color-footer-text);
        }

        .site-footer .footer-links a {
            color: var(--color-footer-text);
            transition: color var(--transition);
        }

        .site-footer .footer-links a:hover {
            color: #fff;
        }

        .site-footer .footer-links .sep {
            color: rgba(255, 255, 255, 0.25);
            margin: 0 6px;
        }

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

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

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }

            .container {
                padding: 0 18px;
            }

            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                transition: transform var(--transition);
                z-index: 999;
            }

            .main-nav.open {
                transform: translateY(0);
            }

            .main-nav ul {
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
            }

            .main-nav a {
                padding: 12px 16px;
                font-size: 15px;
                width: 100%;
            }

            .nav-cta {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .page-header {
                padding: 28px 0 24px;
                margin-bottom: 24px;
            }

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

            .filter-toolbar {
                padding: 18px;
            }

            .filter-toolbar .filter-row {
                flex-direction: column;
                gap: 12px;
            }

            .filter-toolbar .filter-group {
                min-width: 100%;
            }

            .filter-toolbar .filter-actions {
                width: 100%;
                justify-content: stretch;
            }

            .filter-toolbar .filter-actions .btn {
                flex: 1;
            }

            .case-item {
                padding-left: 30px;
            }

            .case-item::before {
                left: 10px;
            }

            .case-item .case-dot {
                width: 22px;
                height: 22px;
                left: 0;
                top: 14px;
            }

            .case-card .case-thumb {
                width: 100%;
                min-height: 180px;
                max-height: 240px;
            }

            .case-card .case-body {
                padding: 18px 20px;
            }

            .case-card .case-title {
                font-size: 17px;
            }

            .case-card .case-data {
                flex-direction: column;
                gap: 8px;
            }

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

            .subscribe-cta {
                padding: 32px 24px;
                flex-direction: column;
                gap: 20px;
            }

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

            .subscribe-cta input[type="email"] {
                min-width: 100%;
            }

            .subscribe-cta .btn {
                width: 100%;
            }

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

            .site-footer .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .page-header h1 {
                font-size: 24px;
            }

            .page-header .lead {
                font-size: 15px;
            }

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

            .case-card .case-thumb {
                min-height: 140px;
                max-height: 180px;
            }

            .badge {
                font-size: 11px;
                padding: 2px 10px;
            }

            .case-card .case-date {
                font-size: 12px;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}