/* roulang page: index */
:root {
            --primary: #2E1A4D;
            --primary-light: #4A2D7A;
            --accent: #00C9A7;
            --accent-dark: #00A88C;
            --accent-orange: #FF5A3C;
            --bg: #F7F5F2;
            --bg-card: #FFFFFF;
            --bg-light-gray: #F0EEEA;
            --text-primary: #1A1A2E;
            --text-secondary: #5F5D6B;
            --text-inverse: #FFFFFF;
            --text-muted: #B9B7C2;
            --border: #EAE8E4;
            --border-light: #F0EEEA;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.04);
            --shadow-md: 0 8px 20px rgba(26, 26, 46, 0.08);
            --shadow-lg: 0 12px 32px rgba(26, 26, 46, 0.12);
            --transition: 300ms ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --top-bar-height: 32px;
        }

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

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

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

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

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

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

        button {
            font-family: var(--font-stack);
            cursor: pointer;
            border: none;
            background: none;
            font-size: 14px;
            font-weight: 700;
            transition: all var(--transition);
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        input {
            font-family: var(--font-stack);
            font-size: 14px;
        }

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

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

        /* ===== Top Bar ===== */
        .top-bar {
            background-color: var(--primary);
            color: rgba(255, 255, 255, 0.85);
            height: var(--top-bar-height);
            font-size: 13px;
            line-height: 1;
            display: flex;
            align-items: center;
            position: relative;
            z-index: 1001;
        }

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

        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 8px;
            min-width: 0;
            overflow: hidden;
            white-space: nowrap;
        }

        .top-bar-left .live-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--accent-orange);
            flex-shrink: 0;
            animation: topBarDot 2s ease-in-out infinite;
        }

        @keyframes topBarDot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-shrink: 0;
        }

        .top-bar-search {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-sm);
            padding: 4px 8px;
            font-size: 12px;
        }

        .top-bar-search input {
            background: none;
            border: none;
            color: #fff;
            width: 90px;
            font-size: 12px;
            outline: none;
        }

        .top-bar-search input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .top-bar-link {
            color: rgba(255, 255, 255, 0.75);
            font-size: 13px;
            font-weight: 500;
            transition: color var(--transition);
        }

        .top-bar-link:hover {
            color: var(--accent);
        }

        .top-bar-divider {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, 0.2);
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }

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

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

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--accent) 0%, #00E0BC 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            font-size: 18px;
            letter-spacing: -1px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            line-height: 1;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .main-nav a {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            padding: 8px 0;
            position: relative;
            transition: color var(--transition);
        }

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

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

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--accent);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .nav-insights-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .nav-insights-link:hover {
            color: var(--accent);
            background: rgba(0, 201, 167, 0.06);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 700;
            line-height: 1.2;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
        }

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

        .btn-primary:hover {
            background-color: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(0, 201, 167, 0.3);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(0, 201, 167, 0.25);
        }

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

        .btn-secondary:hover {
            background-color: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(46, 26, 77, 0.25);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-outline-white {
            background-color: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }

        .btn-outline-white:hover {
            background-color: #fff;
            color: var(--primary);
            border-color: #fff;
            transform: translateY(-1px);
        }

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

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

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

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--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 li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .mobile-menu li:last-child {
            border-bottom: none;
        }

        .mobile-menu a {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            display: block;
        }

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

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 680px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-color: var(--primary);
            color: #fff;
        }

        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background:
                radial-gradient(ellipse at 18% 28%, rgba(0, 201, 167, 0.22) 0%, transparent 55%),
                radial-gradient(ellipse at 82% 72%, rgba(255, 90, 60, 0.18) 0%, transparent 50%),
                radial-gradient(ellipse at 52% 42%, rgba(74, 45, 122, 0.65) 0%, transparent 60%),
                radial-gradient(ellipse at 5% 85%, rgba(0, 201, 167, 0.12) 0%, transparent 40%),
                linear-gradient(200deg, rgba(26, 26, 46, 0.55) 0%, rgba(46, 26, 77, 0.45) 50%, rgba(26, 26, 46, 0.6) 100%),
                url('/assets/images/47e4218c5a6f8d50.webp') center / cover no-repeat;
            background-blend-mode: normal, normal, normal, normal, multiply, normal;
        }

        .hero-ripple {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            opacity: 0.12;
            pointer-events: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200' viewBox='0 0 200 200'%3E%3Ccircle cx='100' cy='100' r='15' fill='none' stroke='white' stroke-width='1.5'/%3E%3Ccircle cx='100' cy='100' r='32' fill='none' stroke='white' stroke-width='1'/%3E%3Ccircle cx='100' cy='100' r='55' fill='none' stroke='white' stroke-width='0.8'/%3E%3Ccircle cx='100' cy='100' r='82' fill='none' stroke='white' stroke-width='0.6'/%3E%3Ccircle cx='100' cy='100' r='110' fill='none' stroke='white' stroke-width='0.4'/%3E%3C/svg%3E");
            background-size: 200px 200px;
            background-position: center;
        }

        .hero-live-badge {
            position: absolute;
            top: 28px;
            right: 32px;
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(26, 26, 46, 0.7);
            backdrop-filter: blur(8px);
            padding: 8px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            z-index: 5;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .hero-live-badge .live-badge-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            animation: liveBlink 1.5s ease-in-out infinite;
        }

        @keyframes liveBlink {
            0%, 49% {
                background-color: var(--accent-orange);
                box-shadow: 0 0 0 0 rgba(255, 90, 60, 0.5);
            }
            50%, 100% {
                background-color: var(--accent);
                box-shadow: 0 0 0 6px rgba(0, 201, 167, 0);
            }
        }

        .hero .container {
            position: relative;
            z-index: 3;
            width: 100%;
        }

        .hero-content {
            max-width: 640px;
            padding: 80px 0;
        }

        .hero-content h1 {
            font-size: 48px;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 20px;
            color: #fff;
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 36px;
            max-width: 480px;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero .btn-secondary {
            border-color: rgba(255, 255, 255, 0.55);
            color: #fff;
        }

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

        .hero-meta {
            display: flex;
            gap: 24px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
        }

        .hero-meta-item span {
            font-weight: 700;
            color: var(--accent);
            font-size: 15px;
        }

        /* ===== Data Strip ===== */
        .data-strip {
            background-color: var(--primary);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
        }

        .data-strip .container {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 8px;
        }

        .data-item {
            text-align: center;
            padding: 8px 10px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .data-item:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .data-value {
            font-size: 20px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.3;
            letter-spacing: -0.5px;
        }

        .data-label {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 2px;
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }

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

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

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

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

        .section-header h2 {
            font-size: 28px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--text-primary);
            line-height: 1.3;
        }

        .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-top: 12px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .section-primary-bg .section-header p {
            color: rgba(255, 255, 255, 0.75);
        }

        /* ===== Tech Articles ===== */
        .tech-articles {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .tech-card {
            display: flex;
            flex-direction: column;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .tech-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(0, 201, 167, 0.35);
        }

        .tech-card-img {
            height: 160px;
            overflow: hidden;
            flex-shrink: 0;
        }

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

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

        .tech-card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .tech-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .tech-card-body p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .read-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition);
        }

        .read-link:hover {
            color: var(--accent-dark);
            gap: 8px;
        }

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

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .step-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            transition: height var(--transition);
        }

        .step-card:nth-child(1)::before { background: #00C9A7; }
        .step-card:nth-child(2)::before { background: #00E0BC; }
        .step-card:nth-child(3)::before { background: #00A88C; }
        .step-card:nth-child(4)::before { background: #FF5A3C; }

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

        .step-number {
            font-size: 32px;
            font-weight: 900;
            line-height: 1;
            letter-spacing: -1px;
            margin-bottom: 16px;
        }

        .step-card:nth-child(1) .step-number { color: #00C9A7; }
        .step-card:nth-child(2) .step-number { color: #00E0BC; }
        .step-card:nth-child(3) .step-number { color: #00A88C; }
        .step-card:nth-child(4) .step-number { color: #FF5A3C; }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

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

        /* ===== Case Cards ===== */
        .case-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
        }

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

        .case-card-img {
            height: 320px;
            overflow: hidden;
            position: relative;
        }

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

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

        .case-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(26, 26, 46, 0.75);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 6px 12px;
            border-radius: 4px;
            z-index: 2;
        }

        .case-detail-btn {
            position: absolute;
            top: 16px;
            right: 16px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.65);
            color: #fff;
            font-size: 13px;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 20px;
            cursor: pointer;
            transition: all var(--transition);
            z-index: 2;
        }

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

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

        .case-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .case-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 14px;
        }

        .case-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(0, 201, 167, 0.08);
            padding: 4px 10px;
            border-radius: 4px;
        }

        .case-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== Conversion Path ===== */
        .conversion-path {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 0;
            align-items: stretch;
            max-width: 1000px;
            margin: 0 auto;
        }

        .path-step {
            text-align: center;
            padding: 20px 12px;
            position: relative;
            background: rgba(255, 255, 255, 0.7);
            border-radius: var(--radius-md);
            transition: all var(--transition);
        }

        .path-step:hover {
            background: #fff;
            box-shadow: var(--shadow-sm);
        }

        .path-step:not(:last-child)::after {
            content: '→';
            position: absolute;
            right: -8px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 18px;
            color: var(--text-secondary);
            z-index: 2;
        }

        .path-step-num {
            font-size: 12px;
            font-weight: 700;
            color: var(--accent-orange);
            letter-spacing: 1px;
            margin-bottom: 6px;
        }

        .path-step h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .path-step p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ===== Growth Timeline ===== */
        .growth-timeline {
            max-width: 720px;
            margin: 0 auto;
            position: relative;
            padding-left: 36px;
        }

        .growth-timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: linear-gradient(180deg, var(--accent) 0%, var(--accent-orange) 100%);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding: 20px 24px;
            margin-bottom: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .timeline-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }

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

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -32px;
            top: 24px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            border: 2px solid #fff;
            box-shadow: 0 0 0 2px var(--accent);
        }

        .timeline-item:nth-child(2)::before { background: #00E0BC; box-shadow: 0 0 0 2px #00E0BC; }
        .timeline-item:nth-child(3)::before { background: #00A88C; box-shadow: 0 0 0 2px #00A88C; }
        .timeline-item:nth-child(4)::before { background: var(--accent-orange); box-shadow: 0 0 0 2px var(--accent-orange); }

        .timeline-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

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

        /* ===== Brand Intro ===== */
        .brand-intro {
            display: grid;
            grid-template-columns: 380px 1fr;
            gap: 48px;
            align-items: center;
        }

        .brand-intro-img {
            width: 380px;
            height: 320px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .brand-intro-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .brand-intro-text h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .brand-intro-text p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
        }

        .brand-intro-text p + p {
            margin-top: 16px;
        }

        /* ===== Insights ===== */
        .insights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .insight-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .insight-card-img {
            height: 200px;
            overflow: hidden;
        }

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

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

        .insight-card-body {
            padding: 20px 22px;
        }

        .insight-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .insight-card-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .insight-card-body p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .section-footer-link {
            text-align: center;
            margin-top: 36px;
        }

        /* ===== Tools ===== */
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .tool-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
        }

        .tool-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(0, 201, 167, 0.35);
        }

        .tool-icon {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .tool-card:nth-child(1) .tool-icon { background: rgba(0, 201, 167, 0.12); }
        .tool-card:nth-child(2) .tool-icon { background: rgba(255, 90, 60, 0.1); }
        .tool-card:nth-child(3) .tool-icon { background: rgba(46, 26, 77, 0.08); }
        .tool-card:nth-child(4) .tool-icon { background: rgba(0, 201, 167, 0.08); }

        .tool-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            padding-right: 36px;
        }

        .tool-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }

        .tool-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(0, 201, 167, 0.08);
            padding: 4px 10px;
            border-radius: 4px;
            display: inline-block;
        }

        /* ===== Scene ===== */
        .scene-img-wrap {
            width: 100%;
            height: 480px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            margin-bottom: 28px;
        }

        .scene-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .scene-details {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }

        .scene-detail {
            text-align: center;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 12px;
            transition: all var(--transition);
        }

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

        .scene-detail-icon {
            font-size: 24px;
            margin-bottom: 8px;
        }

        .scene-detail h3 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .scene-detail p {
            font-size: 12px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ===== Interaction Dark Section ===== */
        .interaction-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

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

        .interaction-tag {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 10px 18px;
            border-radius: 24px;
            transition: all var(--transition);
            cursor: default;
        }

        .interaction-tag:hover {
            background: rgba(0, 201, 167, 0.2);
            border-color: var(--accent);
            color: var(--accent);
        }

        .interaction-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.9;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

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

        .faq-item:hover {
            border-color: rgba(0, 201, 167, 0.35);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: none;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
        }

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

        .faq-icon {
            font-size: 20px;
            font-weight: 300;
            color: var(--text-secondary);
            transition: transform var(--transition);
            flex-shrink: 0;
            line-height: 1;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease, padding 300ms ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            background-color: var(--primary);
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -40%;
            left: -20%;
            width: 60%;
            height: 180%;
            background: radial-gradient(ellipse, rgba(0, 201, 167, 0.2) 0%, transparent 60%);
            pointer-events: none;
        }

        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -40%;
            right: -15%;
            width: 55%;
            height: 160%;
            background: radial-gradient(ellipse, rgba(255, 90, 60, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }

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

        .cta-banner h2 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .cta-banner p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            margin-bottom: 32px;
        }

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

        /* ===== Subscribe ===== */
        .subscribe-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .subscribe-form {
            display: flex;
            gap: 12px;
            max-width: 420px;
        }

        .subscribe-form input {
            flex: 1;
            height: 44px;
            padding: 0 16px;
            font-size: 14px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            transition: border-color var(--transition);
        }

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

        .subscribe-form input::placeholder {
            color: var(--text-muted);
        }

        .subscribe-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
        }

        /* ===== Footer ===== */
        .site-footer {
            background-color: var(--primary);
            color: rgba(255, 255, 255, 0.8);
            padding-top: 64px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 0.8fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 22px;
        }

        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 12px;
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 16px;
        }

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

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

        .footer-col ul a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
            line-height: 1.6;
        }

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

        .footer-subscribe-form {
            display: flex;
            gap: 8px;
            margin-top: 12px;
        }

        .footer-subscribe-form input {
            flex: 1;
            height: 40px;
            padding: 0 12px;
            font-size: 13px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-sm);
            color: #fff;
            transition: border-color var(--transition);
        }

        .footer-subscribe-form input:focus {
            border-color: var(--accent);
            outline: none;
        }

        .footer-subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-subscribe-form button {
            height: 40px;
            padding: 0 18px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 13px;
            font-weight: 700;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .footer-subscribe-form button:hover {
            background-color: var(--accent-dark);
        }

        .rss-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
        }

        .rss-link:hover {
            color: var(--accent);
        }

        .footer-bottom {
            padding: 20px 0;
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

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

        .footer-bottom a {
            color: var(--text-muted);
            transition: color var(--transition);
        }

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

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

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

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

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

        @media (max-width: 768px) {
            :root {
                --header-height: 56px;
            }

            .top-bar {
                height: auto;
                min-height: 28px;
                padding: 4px 0;
            }

            .top-bar-right {
                display: none;
            }

            .top-bar-left {
                text-align: center;
                justify-content: center;
                width: 100%;
            }

            .main-nav {
                display: none;
            }

            .nav-insights-link {
                display: none;
            }

            .hamburger {
                display: flex;
                position: relative;
                z-index: 1002;
            }

            .mobile-menu {
                display: block;
            }

            .hero {
                min-height: 460px;
            }

            .hero-content {
                padding: 48px 0;
            }

            .hero-content h1 {
                font-size: 28px;
                letter-spacing: -0.5px;
            }

            .hero-subtitle {
                font-size: 15px;
                margin-bottom: 28px;
            }

            .hero-live-badge {
                top: 16px;
                right: 16px;
                font-size: 11px;
                padding: 6px 10px;
            }

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

            .section {
                padding: 48px 0;
            }

            .section-header {
                margin-bottom: 32px;
            }

            .section-header h2 {
                font-size: 22px;
            }

            .tech-articles {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .tech-card {
                flex-direction: row;
            }

            .tech-card-img {
                width: 140px;
                height: auto;
                flex-shrink: 0;
            }

            .tech-card-img img {
                height: 100%;
            }

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

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

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

            .case-card-img {
                height: 200px;
            }

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

            .path-step:not(:last-child)::after {
                content: '↓';
                position: absolute;
                right: auto;
                left: 50%;
                transform: translateX(-50%);
                top: auto;
                bottom: -16px;
            }

            .path-step {
                padding: 16px;
            }

            .growth-timeline {
                padding-left: 28px;
            }

            .timeline-item::before {
                left: -24px;
                width: 8px;
                height: 8px;
            }

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

            .brand-intro-img {
                width: 100%;
                height: 220px;
            }

            .insights-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .insight-card-img {
                height: 160px;
            }

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

            .scene-img-wrap {
                height: 240px;
            }

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

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

            .interaction-tag {
                font-size: 13px;
                padding: 8px 14px;
            }

            .cta-banner {
                padding: 40px 20px;
            }

            .cta-banner h2 {
                font-size: 22px;
            }

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

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

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

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

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

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

            .hero-buttons {
                gap: 10px;
            }

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

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

            .data-value {
                font-size: 17px;
            }

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

            .tech-card-img {
                width: 100%;
                height: 140px;
            }

            .scene-img-wrap {
                height: 180px;
            }

            .scene-details {
                grid-template-columns: 1fr;
            }

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

            .subscribe-form button {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2E1A4D;
            --primary-light: #4A2D7A;
            --accent: #00C9A7;
            --accent-dark: #00A88C;
            --accent-orange: #FF5A3C;
            --bg: #F7F5F2;
            --bg-card: #FFFFFF;
            --bg-light-gray: #F0EEEA;
            --text-primary: #1A1A2E;
            --text-secondary: #5F5D6B;
            --text-inverse: #FFFFFF;
            --text-muted: #B9B7C2;
            --border: #EAE8E4;
            --border-light: #F0EEEA;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.04);
            --shadow-md: 0 8px 20px rgba(26, 26, 46, 0.08);
            --shadow-lg: 0 12px 32px rgba(26, 26, 46, 0.12);
            --transition: 300ms ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --top-bar-height: 32px;
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 56px;
            }
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        button {
            font-family: var(--font-stack);
            cursor: pointer;
            border: none;
            background: none;
            font-size: 14px;
            font-weight: 700;
            transition: all var(--transition);
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        input {
            font-family: var(--font-stack);
            font-size: 14px;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 64px 0;
        }
        .section-alt {
            background-color: var(--bg-light-gray);
        }
        .section-deep {
            background-color: var(--primary);
            color: var(--text-inverse);
        }
        .section-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .section-deep .section-title {
            color: var(--text-inverse);
        }
        .section-deep .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 700;
            line-height: 1.2;
            border: 1px solid transparent;
            transition: all var(--transition);
            cursor: pointer;
            text-align: center;
        }
        .btn-primary {
            background-color: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background-color: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .btn-outline-light {
            background-color: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
        }
        .btn-outline-light:hover {
            background-color: #fff;
            color: var(--primary);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .btn-text {
            color: var(--accent);
            font-size: 14px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 0;
            background: none;
            border: none;
            transition: color var(--transition);
        }
        .btn-text:hover {
            color: var(--accent-dark);
        }
        .btn-text .arrow {
            font-size: 16px;
            line-height: 1;
            transition: transform var(--transition);
        }
        .btn-text:hover .arrow {
            transform: translateX(4px);
        }
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            line-height: 1.5;
            background-color: rgba(0, 201, 167, 0.08);
            color: var(--accent-dark);
            border: 1px solid rgba(0, 201, 167, 0.2);
        }
        .tag-orange {
            background-color: rgba(255, 90, 60, 0.08);
            color: var(--accent-orange);
            border-color: rgba(255, 90, 60, 0.2);
        }
        .tag-purple {
            background-color: rgba(46, 26, 77, 0.06);
            color: var(--primary);
            border-color: rgba(46, 26, 77, 0.15);
        }
        .badge {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 700;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        .badge-live {
            background-color: var(--accent-orange);
            color: #fff;
        }
        .card {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(0, 201, 167, 0.3);
        }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            display: block;
        }
        .card-body {
            padding: 20px 24px;
        }
        .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .top-bar {
            background-color: var(--primary);
            color: rgba(255, 255, 255, 0.85);
            height: var(--top-bar-height);
            display: flex;
            align-items: center;
            font-size: 13px;
            position: relative;
            z-index: 1001;
        }
        .top-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .live-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--accent-orange);
            animation: livePulse 1.5s ease-in-out infinite;
            flex-shrink: 0;
        }
        @keyframes livePulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(0.7);
            }
        }
        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .top-bar-search {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-sm);
            padding: 4px 10px;
            font-size: 12px;
        }
        .top-bar-search input {
            background: none;
            border: none;
            color: #fff;
            width: 80px;
            font-size: 12px;
            outline: none;
        }
        .top-bar-search input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .top-bar-auth {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            font-weight: 600;
        }
        .top-bar-auth a {
            color: rgba(255, 255, 255, 0.8);
            transition: color var(--transition);
        }
        .top-bar-auth a:hover {
            color: var(--accent);
        }
        .top-bar-divider {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, 0.2);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--accent) 0%, #00E0BC 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            font-size: 18px;
            letter-spacing: -1px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            line-height: 1;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 26px;
            list-style: none;
        }
        .main-nav a {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            padding: 8px 0;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--accent);
        }
        .main-nav a.active {
            color: var(--accent);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--accent);
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-insights-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-insights-link:hover {
            color: var(--accent);
            background: rgba(0, 201, 167, 0.06);
        }
        .nav-publish-btn {
            font-size: 13px;
            font-weight: 700;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            border: 1.5px solid var(--primary);
            color: var(--primary);
            background: transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-publish-btn:hover {
            background-color: var(--primary);
            color: #fff;
        }
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: #fff;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            cursor: pointer;
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .hamburger span {
            display: block;
            width: 18px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger:hover {
            background-color: var(--bg-light-gray);
        }
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .mobile-nav-overlay.active {
            opacity: 1;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 280px;
            background: #fff;
            z-index: 1000;
            padding: 24px 20px;
            box-shadow: var(--shadow-lg);
            transform: translateX(100%);
            transition: transform var(--transition);
            overflow-y: auto;
        }
        .mobile-menu.active {
            transform: translateX(0);
        }
        .mobile-menu-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }
        .mobile-menu-close {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: #fff;
            font-size: 20px;
            line-height: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--text-primary);
            transition: all var(--transition);
        }
        .mobile-menu-close:hover {
            background-color: var(--bg-light-gray);
        }
        .mobile-menu ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu ul a {
            display: block;
            padding: 12px 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .mobile-menu ul a:hover {
            background-color: var(--bg-light-gray);
            color: var(--accent);
        }
        .mobile-menu ul a.active {
            background-color: rgba(0, 201, 167, 0.08);
            color: var(--accent);
        }
        .mobile-menu-divider {
            height: 1px;
            background: var(--border);
            margin: 16px 0;
        }
        .mobile-menu-extra {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        @media (max-width: 1024px) {
            .main-nav {
                gap: 18px;
            }
            .main-nav a {
                font-size: 14px;
            }
            .nav-insights-link {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-insights-link {
                display: none;
            }
            .nav-publish-btn {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav-overlay {
                display: block;
            }
            .mobile-menu {
                display: block;
            }
            .top-bar-right .top-bar-auth {
                display: none;
            }
            .top-bar-search {
                display: none;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .container {
                padding: 0 16px;
            }
            body {
                font-size: 14px;
                line-height: 1.7;
            }
        }
        .page-header {
            background-color: var(--bg-light-gray);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
            font-size: 12px;
        }
        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 600;
        }
        .page-header h1 {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .page-header .page-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }
        @media (max-width: 768px) {
            .page-header {
                padding: 32px 0 28px;
            }
            .page-header h1 {
                font-size: 24px;
            }
            .page-header .page-desc {
                font-size: 14px;
            }
        }
        .sort-tabs {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .sort-tab {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            background: #fff;
            border: 1px solid var(--border);
            cursor: pointer;
            transition: all var(--transition);
        }
        .sort-tab:hover {
            border-color: var(--accent);
            color: var(--accent);
        }
        .sort-tab.active {
            background-color: var(--accent);
            border-color: var(--accent);
            color: #fff;
        }
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .article-card {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            align-items: center;
            transition: all var(--transition);
        }
        .article-card:hover {
            background-color: rgba(255, 255, 255, 0.6);
            padding-left: 12px;
        }
        .article-thumb {
            width: 140px;
            height: 105px;
            flex-shrink: 0;
            border-radius: 8px;
            overflow: hidden;
        }
        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 8px;
        }
        .article-info {
            flex: 1;
            min-width: 0;
        }
        .article-info h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .article-info h3 a {
            color: inherit;
            transition: color var(--transition);
        }
        .article-info h3 a:hover {
            color: var(--accent);
        }
        .article-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .article-meta .read-more {
            color: var(--accent);
            font-weight: 600;
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition);
        }
        .article-meta .read-more:hover {
            color: var(--accent-dark);
        }
        @media (max-width: 768px) {
            .article-card {
                flex-direction: column;
                gap: 12px;
                padding: 16px 0;
            }
            .article-thumb {
                width: 100%;
                height: 180px;
            }
            .article-info h3 {
                font-size: 16px;
            }
            .article-excerpt {
                font-size: 13px;
            }
        }
        .featured-grid {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding-bottom: 12px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }
        .featured-grid::-webkit-scrollbar {
            height: 4px;
        }
        .featured-grid::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 2px;
        }
        .featured-card {
            flex: 0 0 280px;
            scroll-snap-align: start;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .featured-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(0, 201, 167, 0.3);
        }
        .featured-card-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            display: block;
        }
        .featured-card-body {
            padding: 16px 18px;
        }
        .featured-card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 6px;
        }
        .featured-card-text {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .stat-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            transition: all var(--transition);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .stat-item .highlight {
            color: var(--accent-orange);
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 22px;
            }
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: baseline;
            justify-content: center;
            padding: 20px 0;
        }
        .tag-cloud-item {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            font-weight: 500;
            transition: all var(--transition);
            cursor: pointer;
        }
        .tag-cloud-item:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(0, 201, 167, 0.04);
        }
        .tag-cloud-item.size-1 {
            font-size: 13px;
        }
        .tag-cloud-item.size-2 {
            font-size: 15px;
            font-weight: 600;
        }
        .tag-cloud-item.size-3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
        }
        .tag-cloud-item.size-4 {
            font-size: 21px;
            font-weight: 800;
            color: var(--accent-dark);
        }
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .tool-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            transition: all var(--transition);
        }
        .tool-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(0, 201, 167, 0.3);
        }
        .tool-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 201, 167, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 22px;
            color: var(--accent);
        }
        .tool-name {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .tool-desc {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 14px;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .tools-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(0, 201, 167, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            transition: background var(--transition);
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
        }
        .faq-question:hover {
            background-color: var(--bg-light-gray);
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--bg-light-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .faq-item.active .faq-icon {
            background: var(--accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            display: block;
            animation: fadeIn 0.3s ease;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-4px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .cta-banner {
            background-color: var(--primary);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            color: #fff;
        }
        .cta-banner-text {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            max-width: 320px;
        }
        @media (max-width: 768px) {
            .cta-banner {
                flex-direction: column;
                text-align: center;
                padding: 20px;
            }
            .cta-banner-text {
                max-width: 100%;
            }
        }
        .site-footer {
            background-color: var(--primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
            margin-top: 64px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 12px;
            max-width: 260px;
        }
        .footer-brand .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .logo-icon {
            background: linear-gradient(135deg, var(--accent) 0%, #00E0BC 100%);
            color: #fff;
        }
        .footer-brand .logo-text {
            color: #fff;
        }
        .footer-col h4 {
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.8px;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-subscribe-form {
            display: flex;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-subscribe-form input {
            flex: 1;
            height: 44px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-sm);
            padding: 0 14px;
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: border-color var(--transition);
        }
        .footer-subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-subscribe-form input:focus {
            border-color: var(--accent);
        }
        .footer-subscribe-form button {
            height: 44px;
            padding: 0 18px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 700;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .footer-subscribe-form button:hover {
            background: var(--accent-dark);
        }
        .rss-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .rss-link:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.45);
            transition: color var(--transition);
        }
        .footer-bottom-links a:hover {
            color: var(--accent);
        }
        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .site-footer {
                padding: 40px 0 0;
                margin-top: 48px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                padding-bottom: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .footer-bottom-links {
                flex-wrap: wrap;
                justify-content: center;
            }
        }

/* roulang page: category1 */
:root {
  --primary: #2E1A4D;
  --primary-light: #4A2D7A;
  --accent: #00C9A7;
  --accent-dark: #00A88C;
  --accent-orange: #FF5A3C;
  --bg: #F7F5F2;
  --bg-card: #FFFFFF;
  --bg-light-gray: #F0EEEA;
  --text-primary: #1A1A2E;
  --text-secondary: #5F5D6B;
  --text-inverse: #FFFFFF;
  --text-muted: #B9B7C2;
  --border: #EAE8E4;
  --border-light: #F0EEEA;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.04);
  --shadow-md: 0 8px 20px rgba(26, 26, 46, 0.08);
  --shadow-lg: 0 12px 32px rgba(26, 26, 46, 0.12);
  --transition: 300ms ease;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --container-max: 1200px;
  --header-height: 72px;
  --top-bar-height: 32px;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--accent);
}
ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
button {
  font-family: var(--font-stack);
  cursor: pointer;
  border: none;
  background: none;
  font-size: 14px;
  font-weight: 700;
  transition: all var(--transition);
}
button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}
input {
  font-family: var(--font-stack);
  font-size: 14px;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}
/* ===== Top Bar ===== */
.top-bar {
  background: var(--primary);
  color: var(--text-inverse);
  font-size: 12px;
  height: var(--top-bar-height);
  display: flex;
  align-items: center;
  position: relative;
  z-index: 1001;
}
.top-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.top-bar-left {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.top-bar-left .live-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 1.5s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.5); }
}
.top-bar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.top-bar-search {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  font-size: 12px;
}
.top-bar-search input {
  background: none;
  border: none;
  color: #fff;
  width: 100px;
  font-size: 12px;
  outline: none;
}
.top-bar-search input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}
.top-bar-search svg {
  width: 12px;
  height: 12px;
  stroke: rgba(255, 255, 255, 0.6);
  flex-shrink: 0;
}
.top-bar-divider {
  width: 1px;
  height: 14px;
  background: rgba(255, 255, 255, 0.2);
}
.top-bar-link {
  color: rgba(255, 255, 255, 0.8);
  font-weight: 600;
  font-size: 12px;
  transition: color var(--transition);
}
.top-bar-link:hover {
  color: var(--accent);
}
/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  position: relative;
}
.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent) 0%, #00E0BC 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 18px;
  letter-spacing: -1px;
  flex-shrink: 0;
}
.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
  line-height: 1;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.main-nav a {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  padding: 8px 0;
  position: relative;
  transition: color var(--transition);
}
.main-nav a:hover {
  color: var(--accent);
}
.main-nav a.active {
  color: var(--accent);
}
.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--accent);
  border-radius: 2px;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.nav-insights-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.nav-insights-link:hover {
  color: var(--accent);
  background: rgba(0, 201, 167, 0.06);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  line-height: 1.4;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 201, 167, 0.3);
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(46, 26, 77, 0.2);
}
.btn-outline-light {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  color: #fff;
}
.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.hamburger:hover {
  background: var(--bg-light-gray);
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  padding: 16px 24px 24px;
  z-index: 999;
}
.mobile-nav.active {
  display: block;
}
.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mobile-nav a {
  display: block;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.mobile-nav a:hover {
  background: var(--bg-light-gray);
  color: var(--accent);
}
.mobile-nav a.active {
  color: var(--accent);
  background: rgba(0, 201, 167, 0.06);
}
/* ===== Page Header (分类头部) ===== */
.page-header {
  background: var(--bg-light-gray);
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--border);
}
.page-header .container {
  max-width: var(--container-max);
}
.breadcrumb-custom {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.breadcrumb-custom a {
  color: var(--text-secondary);
  transition: color var(--transition);
}
.breadcrumb-custom a:hover {
  color: var(--accent);
}
.breadcrumb-custom .separator {
  color: var(--text-muted);
  font-size: 12px;
}
.breadcrumb-custom .current {
  color: var(--text-primary);
  font-weight: 600;
}
.page-header h1 {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  margin: 0 0 12px;
  letter-spacing: -0.5px;
  line-height: 1.3;
}
.page-header-desc {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 720px;
  line-height: 1.8;
  margin: 0;
}
/* ===== Section Common ===== */
.section {
  padding: 48px 0;
}
.section-header {
  margin-bottom: 24px;
}
.section-title {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 8px;
  letter-spacing: -0.5px;
  line-height: 1.3;
}
.section-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  max-width: 600px;
}
/* ===== Article List ===== */
.article-list-section {
  background: #fff;
}
.sort-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.sort-tab {
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: 20px;
  transition: all var(--transition);
  cursor: pointer;
}
.sort-tab:hover {
  background: var(--bg-light-gray);
  color: var(--text-primary);
}
.sort-tab.active {
  background: var(--accent);
  color: #fff;
}
.article-list {
  display: flex;
  flex-direction: column;
}
.article-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-light);
  transition: background var(--transition);
}
.article-item:last-child {
  border-bottom: none;
}
.article-thumb {
  width: 140px;
  height: 105px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-light-gray);
}
.article-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.article-item:hover .article-thumb img {
  transform: scale(1.05);
}
.article-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.article-info h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 6px;
  line-height: 1.4;
}
.article-info h3 a {
  transition: color var(--transition);
}
.article-info h3 a:hover {
  color: var(--accent);
}
.article-excerpt {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0 0 8px;
  line-height: 1.6;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.article-meta .read-more-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition);
}
.article-meta .read-more-link:hover {
  color: var(--accent-dark);
}
.article-meta .read-more-link .arrow {
  font-size: 14px;
  transition: transform var(--transition);
}
.article-meta .read-more-link:hover .arrow {
  transform: translateX(3px);
}
/* ===== Featured Section ===== */
.featured-section {
  background: var(--bg);
}
.featured-scroll {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding-bottom: 12px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.featured-scroll::-webkit-scrollbar {
  height: 6px;
}
.featured-scroll::-webkit-scrollbar-track {
  background: var(--bg-light-gray);
  border-radius: 3px;
}
.featured-scroll::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 3px;
}
.featured-card {
  min-width: 280px;
  max-width: 280px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  scroll-snap-align: start;
  transition: all var(--transition);
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}
.featured-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 201, 167, 0.3);
}
.featured-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
}
.featured-card-body {
  padding: 16px 18px;
}
.featured-card-body h3 {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--text-primary);
  line-height: 1.4;
}
.featured-card-body p {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}
/* ===== Stats Bar ===== */
.stats-section {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  padding: 20px 16px;
  border-radius: var(--radius-md);
  background: var(--bg);
  transition: all var(--transition);
}
.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
}
.stat-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 4px;
}
.stat-value .highlight {
  color: var(--accent-orange);
}
.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}
/* ===== Tag Cloud ===== */
.tags-section {
  background: var(--bg);
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
}
.tag-link {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  cursor: default;
}
.tag-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.tag-link.tag-lg {
  font-size: 18px;
  padding: 8px 20px;
  font-weight: 700;
  color: var(--primary);
}
.tag-link.tag-md {
  font-size: 16px;
  padding: 7px 18px;
  font-weight: 600;
  color: var(--text-primary);
}
.tag-link.tag-sm {
  font-size: 13px;
  padding: 5px 14px;
}
.tag-link.tag-xs {
  font-size: 11px;
  padding: 4px 12px;
  color: var(--text-muted);
}
/* ===== Tools Section ===== */
.tools-section {
  background: #fff;
}
.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.tool-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  background: #fff;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}
.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 201, 167, 0.3);
}
.tool-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(0, 201, 167, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 14px;
  flex-shrink: 0;
}
.tool-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--text-primary);
}
.tool-card p {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0 0 14px;
  line-height: 1.6;
}
.tool-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: auto;
  transition: color var(--transition);
}
.tool-link:hover {
  color: var(--accent-dark);
}
/* ===== FAQ Section ===== */
.faq-section {
  background: var(--bg);
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 800px;
}
.faq-item {
  background: var(--bg-light-gray);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover {
  border-color: rgba(0, 201, 167, 0.3);
}
.faq-item.active {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
}
.faq-question {
  width: 100%;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition);
}
.faq-question:hover {
  color: var(--accent);
}
.faq-question .faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition);
}
.faq-question .faq-icon::before,
.faq-question .faq-icon::after {
  content: '';
  position: absolute;
  background: currentColor;
  border-radius: 2px;
  transition: all var(--transition);
}
.faq-question .faq-icon::before {
  width: 14px;
  height: 2px;
}
.faq-question .faq-icon::after {
  width: 2px;
  height: 14px;
}
.faq-item.active .faq-question .faq-icon {
  transform: rotate(45deg);
}
.faq-item.active .faq-question .faq-icon::after {
  opacity: 0;
}
.faq-answer {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: none;
}
.faq-item.active .faq-answer {
  display: block;
  animation: fadeInUp 300ms ease;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}
/* ===== CTA Banner ===== */
.cta-banner-section {
  background: #fff;
}
.cta-banner {
  background: var(--primary);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -40px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(0, 201, 167, 0.25) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: 20%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(255, 90, 60, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.cta-banner-text {
  position: relative;
  z-index: 1;
}
.cta-banner-text h2 {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin: 0 0 4px;
  line-height: 1.4;
}
.cta-banner-text p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
}
.cta-banner-actions {
  display: flex;
  gap: 12px;
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}
/* ===== Footer ===== */
.site-footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.8);
  padding: 48px 0 0;
  font-size: 14px;
}
.site-footer .container {
  max-width: var(--container-max);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand .logo-area {
  margin-bottom: 14px;
}
.footer-brand .logo-text {
  color: #fff;
}
.footer-brand p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  max-width: 260px;
  line-height: 1.7;
  margin: 0;
}
.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 0 0 14px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-col ul a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  transition: color var(--transition);
}
.footer-col ul a:hover {
  color: var(--accent);
}
.footer-subscribe-form {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}
.footer-subscribe-form input {
  flex: 1;
  height: 44px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition);
  min-width: 0;
}
.footer-subscribe-form input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}
.footer-subscribe-form input:focus {
  border-color: var(--accent);
}
.footer-subscribe-form button {
  height: 44px;
  padding: 0 20px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
  transition: all var(--transition);
}
.footer-subscribe-form button:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
}
.rss-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  transition: color var(--transition);
}
.rss-link:hover {
  color: var(--accent);
}
.rss-link svg {
  stroke: currentColor;
}
.footer-bottom {
  background: rgba(0, 0, 0, 0.2);
  padding: 16px 0;
  margin-top: 0;
}
.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-bottom span {
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: 18px;
}
.footer-bottom-links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-bottom-links a:hover {
  color: var(--accent);
}
/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .main-nav {
    gap: 18px;
  }
  .main-nav a {
    font-size: 14px;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}
@media (max-width: 768px) {
  :root {
    --header-height: 56px;
    --top-bar-height: 32px;
  }
  .site-header {
    height: 56px;
  }
  .top-bar-left .live-dot {
    display: none;
  }
  .top-bar-search {
    display: none;
  }
  .top-bar-divider.hide-mobile {
    display: none;
  }
  .top-bar-link.hide-mobile {
    display: none;
  }
  .main-nav {
    display: none;
  }
  .nav-actions .nav-insights-link {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .mobile-nav.active {
    display: block;
  }
  .logo-icon {
    width: 30px;
    height: 30px;
    font-size: 15px;
    border-radius: 6px;
  }
  .logo-text {
    font-size: 17px;
  }
  .nav-actions .btn-outline {
    padding: 7px 14px;
    font-size: 12px;
  }
  .page-header {
    padding: 32px 0 28px;
  }
  .page-header h1 {
    font-size: 26px;
  }
  .section {
    padding: 32px 0;
  }
  .section-title {
    font-size: 22px;
  }
  .article-item {
    flex-direction: column;
    gap: 12px;
    padding: 16px 0;
  }
  .article-thumb {
    width: 100%;
    height: 160px;
  }
  .article-info h3 {
    font-size: 16px;
  }
  .featured-card {
    min-width: 240px;
    max-width: 240px;
  }
  .featured-card img {
    height: 130px;
  }
  .tools-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .stat-value {
    font-size: 22px;
  }
  .cta-banner {
    padding: 24px 20px;
    flex-direction: column;
    align-items: flex-start;
  }
  .cta-banner-actions {
    width: 100%;
    flex-wrap: wrap;
  }
  .cta-banner-text h2 {
    font-size: 18px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom .container {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }
  .footer-bottom-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .top-bar {
    font-size: 11px;
  }
  .top-bar-left {
    gap: 4px;
    font-size: 11px;
  }
  .logo-text {
    font-size: 15px;
  }
  .nav-actions .btn-outline {
    padding: 5px 10px;
    font-size: 11px;
  }
  .hamburger span {
    width: 18px;
    height: 2px;
  }
  .hamburger {
    gap: 4px;
    padding: 6px;
  }
  .page-header h1 {
    font-size: 22px;
  }
  .page-header-desc {
    font-size: 13px;
  }
  .section-title {
    font-size: 19px;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .stat-value {
    font-size: 18px;
  }
  .stat-item {
    padding: 14px 10px;
  }
  .featured-card {
    min-width: 200px;
    max-width: 200px;
  }
  .featured-card img {
    height: 110px;
  }
  .featured-card-body {
    padding: 12px 14px;
  }
  .featured-card-body h3 {
    font-size: 14px;
  }
  .sort-tab {
    padding: 5px 12px;
    font-size: 12px;
  }
  .tag-link.tag-lg {
    font-size: 15px;
    padding: 6px 14px;
  }
  .tag-link.tag-md {
    font-size: 14px;
    padding: 5px 12px;
  }
  .tag-link {
    font-size: 12px;
    padding: 4px 10px;
  }
  .faq-question {
    font-size: 14px;
    padding: 12px 16px;
  }
  .faq-answer {
    font-size: 13px;
    padding: 0 16px 12px;
  }
}

/* roulang page: category3 */
:root {
            --primary: #2E1A4D;
            --primary-light: #4A2D7A;
            --accent: #00C9A7;
            --accent-dark: #00A88C;
            --accent-orange: #FF5A3C;
            --bg: #F7F5F2;
            --bg-card: #FFFFFF;
            --bg-light-gray: #F0EEEA;
            --text-primary: #1A1A2E;
            --text-secondary: #5F5D6B;
            --text-inverse: #FFFFFF;
            --text-muted: #B9B7C2;
            --border: #EAE8E4;
            --border-light: #F0EEEA;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.04);
            --shadow-md: 0 8px 20px rgba(26, 26, 46, 0.08);
            --shadow-lg: 0 12px 32px rgba(26, 26, 46, 0.12);
            --transition: 300ms ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --top-bar-height: 32px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        button {
            font-family: var(--font-stack);
            cursor: pointer;
            border: none;
            background: none;
            font-size: 14px;
            font-weight: 700;
            transition: all var(--transition);
        }
        button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        input {
            font-family: var(--font-stack);
            font-size: 14px;
        }
        ul, ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        /* ===== Top Bar ===== */
        .top-bar {
            background: var(--primary);
            color: #fff;
            height: var(--top-bar-height);
            display: flex;
            align-items: center;
            font-size: 12px;
            position: relative;
            z-index: 1001;
        }
        .top-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 500;
            letter-spacing: 0.3px;
        }
        .top-bar-left .live-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            animation: pulse-dot 1.5s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.7); }
        }
        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .top-bar-search {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-sm);
            padding: 3px 10px;
            font-size: 12px;
        }
        .top-bar-search svg {
            flex-shrink: 0;
        }
        .top-bar-search input {
            background: none;
            border: none;
            color: #fff;
            width: 90px;
            font-size: 12px;
            outline: none;
            padding: 2px 0;
        }
        .top-bar-search input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .top-bar-auth {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            font-weight: 500;
        }
        .top-bar-auth a {
            color: rgba(255, 255, 255, 0.85);
            padding: 2px 4px;
        }
        .top-bar-auth a:hover {
            color: var(--accent);
        }
        .top-bar-divider {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, 0.25);
        }
        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--accent) 0%, #00E0BC 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            font-size: 18px;
            letter-spacing: -1px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            line-height: 1;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .main-nav a {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            padding: 8px 0;
            position: relative;
            transition: color var(--transition);
        }
        .main-nav a:hover {
            color: var(--accent);
        }
        .main-nav a.active {
            color: var(--accent);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--accent);
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .nav-insights-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .nav-insights-link:hover {
            color: var(--accent);
            background: rgba(0, 201, 167, 0.06);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 700;
            transition: all var(--transition);
            line-height: 1.4;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .btn-sm {
            padding: 6px 16px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 15px;
        }
        .nav-cta-btn {
            font-size: 13px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--primary);
            color: var(--primary);
            font-weight: 700;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            background: var(--primary);
            color: #fff;
        }
        /* ===== Mobile Nav Toggle ===== */
        .mobile-nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 4px;
            cursor: pointer;
        }
        .mobile-nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .mobile-nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .mobile-nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 16px 24px;
            box-shadow: var(--shadow-lg);
            z-index: 999;
        }
        .mobile-nav.open {
            display: block;
        }
        .mobile-nav a {
            display: block;
            padding: 12px 0;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            border-bottom: 1px solid var(--border-light);
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .mobile-nav a:hover {
            color: var(--accent);
        }
        .mobile-nav a.active {
            color: var(--accent);
        }
        /* ===== Page Header (Category Header) ===== */
        .page-header {
            background: var(--bg-light-gray);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .breadcrumb-nav a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb-nav a:hover {
            color: var(--accent);
        }
        .breadcrumb-nav .separator {
            color: var(--text-muted);
            font-size: 12px;
        }
        .breadcrumb-nav .current {
            color: var(--text-primary);
            font-weight: 600;
        }
        .page-header h1 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .page-header-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }
        /* ===== Main ===== */
        main {
            padding: 0 0 60px;
        }
        .section-block {
            padding: 48px 0;
        }
        .section-block.alt-bg {
            background: var(--bg-light-gray);
        }
        .section-block.dark-bg {
            background: var(--primary);
            color: var(--text-inverse);
        }
        .section-heading {
            font-size: 28px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .section-subheading {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
        }
        .dark-bg .section-heading {
            color: #fff;
        }
        .dark-bg .section-subheading {
            color: rgba(255, 255, 255, 0.7);
        }
        /* ===== Sort Tabs ===== */
        .sort-tabs {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .sort-tab {
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
        }
        .sort-tab:hover {
            color: var(--accent);
            border-color: var(--accent);
        }
        .sort-tab.active {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
        }
        /* ===== Article List ===== */
        .article-list {
            display: flex;
            flex-direction: column;
        }
        .article-list-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            transition: all var(--transition);
        }
        .article-list-item:last-child {
            border-bottom: none;
        }
        .article-thumb {
            width: 140px;
            height: 105px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-light-gray);
        }
        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }
        .article-list-item:hover .article-thumb img {
            transform: scale(1.05);
        }
        .article-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-width: 0;
        }
        .article-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
            transition: color var(--transition);
        }
        .article-list-item:hover .article-title {
            color: var(--accent);
        }
        .article-excerpt {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .article-meta .read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            transition: color var(--transition);
        }
        .article-meta .read-more:hover {
            color: var(--accent-dark);
        }
        /* ===== Featured Topics (Horizontal Scroll) ===== */
        .featured-topics-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding: 8px 0 16px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            cursor: grab;
        }
        .featured-topics-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .featured-topics-scroll::-webkit-scrollbar-track {
            background: var(--bg-light-gray);
            border-radius: 3px;
        }
        .featured-topics-scroll::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 3px;
        }
        .featured-topic-card {
            min-width: 280px;
            max-width: 320px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            scroll-snap-align: start;
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .featured-topic-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .featured-topic-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .featured-topic-body {
            padding: 16px 20px;
        }
        .featured-topic-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .featured-topic-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        /* ===== Stats Bar ===== */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -1px;
            margin-bottom: 4px;
            line-height: 1.2;
        }
        .stat-number .highlight {
            color: var(--accent-orange);
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }
        /* ===== Tag Cloud ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: baseline;
        }
        .tag-cloud-item {
            padding: 6px 16px;
            border-radius: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-secondary);
            transition: all var(--transition);
            cursor: default;
            display: inline-block;
        }
        .tag-cloud-item:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(0, 201, 167, 0.04);
        }
        .tag-size-xs { font-size: 12px; padding: 4px 12px; }
        .tag-size-sm { font-size: 13px; padding: 5px 14px; }
        .tag-size-md { font-size: 14px; padding: 6px 16px; }
        .tag-size-lg { font-size: 16px; padding: 8px 18px; }
        .tag-size-xl { font-size: 18px; padding: 10px 22px; font-weight: 700; }
        /* ===== Tool Cards ===== */
        .tool-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .tool-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .tool-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .tool-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 201, 167, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .tool-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .tool-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }
        .tool-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            transition: color var(--transition);
            align-self: flex-start;
        }
        .tool-link:hover {
            color: var(--accent-dark);
        }
        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-light-gray);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item.open {
            background: var(--bg-card);
            border-color: var(--accent);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            transition: all var(--transition);
            gap: 16px;
            user-select: none;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            position: relative;
            transition: transform var(--transition);
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            background: var(--text-secondary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .faq-icon::before {
            width: 14px;
            height: 2px;
            transform: translate(-50%, -50%);
        }
        .faq-icon::after {
            width: 2px;
            height: 14px;
            transform: translate(-50%, -50%);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease, padding 300ms ease;
            padding: 0 20px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 20px 20px;
        }
        /* ===== Category CTA ===== */
        .category-cta {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .category-cta-text {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            line-height: 1.5;
        }
        .category-cta .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.5);
        }
        .category-cta .btn-outline-light:hover {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            padding-bottom: 32px;
        }
        .footer-brand .logo-area {
            margin-bottom: 12px;
        }
        .footer-brand .logo-text {
            color: #fff;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 13px;
            font-weight: 700;
            color: #fff;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-subscribe-form {
            display: flex;
            gap: 8px;
            margin-bottom: 12px;
            flex-wrap: wrap;
        }
        .footer-subscribe-form input {
            flex: 1;
            min-width: 160px;
            height: 44px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-sm);
            padding: 0 14px;
            color: #fff;
            outline: none;
            font-size: 14px;
            transition: border-color var(--transition);
        }
        .footer-subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-subscribe-form input:focus {
            border-color: var(--accent);
        }
        .footer-subscribe-form button {
            height: 44px;
            padding: 0 20px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 14px;
            border: 1px solid var(--accent);
        }
        .footer-subscribe-form button:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
        }
        .rss-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }
        .rss-link:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #B9B7C2;
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .footer-bottom-links a {
            color: #B9B7C2;
            font-size: 13px;
            transition: color var(--transition);
        }
        .footer-bottom-links a:hover {
            color: var(--accent);
        }
        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root {
                --header-height: 64px;
            }
            .main-nav {
                gap: 20px;
            }
            .main-nav a {
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .tool-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 56px;
                --top-bar-height: 28px;
            }
            .top-bar {
                font-size: 11px;
            }
            .top-bar-search input {
                width: 60px;
            }
            .top-bar-auth {
                gap: 4px;
                font-size: 11px;
            }
            .site-header {
                height: var(--header-height);
            }
            .main-nav {
                display: none;
            }
            .nav-actions .nav-insights-link {
                display: none;
            }
            .mobile-nav-toggle {
                display: flex;
            }
            .section-block {
                padding: 32px 0;
            }
            .page-header {
                padding: 32px 0 28px;
            }
            .page-header h1 {
                font-size: 28px;
            }
            .section-heading {
                font-size: 22px;
            }
            .article-thumb {
                width: 100px;
                height: 75px;
            }
            .article-title {
                font-size: 16px;
            }
            .article-excerpt {
                -webkit-line-clamp: 1;
            }
            .article-meta {
                flex-wrap: wrap;
                gap: 8px;
                font-size: 11px;
            }
            .article-meta .read-more {
                font-size: 12px;
            }
            .featured-topic-card {
                min-width: 240px;
                max-width: 260px;
            }
            .featured-topic-card img {
                height: 150px;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 24px;
            }
            .tool-cards-grid {
                grid-template-columns: 1fr;
            }
            .category-cta {
                padding: 24px 20px;
                flex-direction: column;
                text-align: center;
            }
            .category-cta-text {
                font-size: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .footer-bottom-links {
                gap: 12px;
                flex-wrap: wrap;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .top-bar-left span {
                font-size: 10px;
            }
            .top-bar-search {
                display: none;
            }
            .top-bar-divider {
                display: none;
            }
            .top-bar-auth a {
                font-size: 10px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }
            .logo-text {
                font-size: 17px;
            }
            .page-header h1 {
                font-size: 24px;
            }
            .page-header-desc {
                font-size: 14px;
            }
            .section-heading {
                font-size: 20px;
            }
            .article-list-item {
                gap: 12px;
                padding: 16px 0;
            }
            .article-thumb {
                width: 80px;
                height: 60px;
                border-radius: 6px;
            }
            .article-title {
                font-size: 14px;
                margin-bottom: 4px;
            }
            .article-excerpt {
                font-size: 12px;
                margin-bottom: 4px;
            }
            .article-meta {
                font-size: 10px;
            }
            .article-meta .read-more {
                font-size: 11px;
            }
            .featured-topic-card {
                min-width: 200px;
                max-width: 220px;
            }
            .featured-topic-card img {
                height: 120px;
            }
            .featured-topic-body {
                padding: 12px 14px;
            }
            .featured-topic-title {
                font-size: 14px;
            }
            .featured-topic-desc {
                font-size: 12px;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-item {
                padding: 16px 12px;
            }
            .stat-number {
                font-size: 22px;
            }
            .stat-label {
                font-size: 11px;
            }
            .tag-cloud {
                gap: 6px;
            }
            .tag-cloud-item {
                padding: 4px 10px;
                font-size: 12px;
            }
            .tool-card {
                padding: 20px 16px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer {
                font-size: 13px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
            .category-cta {
                padding: 20px 16px;
                border-radius: var(--radius-md);
            }
            .category-cta-text {
                font-size: 14px;
            }
            .footer-subscribe-form input {
                min-width: 120px;
                height: 40px;
            }
            .footer-subscribe-form button {
                height: 40px;
                padding: 0 16px;
                font-size: 13px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #2E1A4D;
            --primary-light: #4A2D7A;
            --accent: #00C9A7;
            --accent-dark: #00A88C;
            --accent-orange: #FF5A3C;
            --bg: #F7F5F2;
            --bg-card: #FFFFFF;
            --bg-light-gray: #F0EEEA;
            --text-primary: #1A1A2E;
            --text-secondary: #5F5D6B;
            --text-inverse: #FFFFFF;
            --text-muted: #B9B7C2;
            --border: #EAE8E4;
            --border-light: #F0EEEA;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.04);
            --shadow-md: 0 8px 20px rgba(26, 26, 46, 0.08);
            --shadow-lg: 0 12px 32px rgba(26, 26, 46, 0.12);
            --transition: 300ms ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --top-bar-height: 32px;
        }

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

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

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

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

        button {
            font-family: var(--font-stack);
            cursor: pointer;
            border: none;
            background: none;
            font-size: 14px;
            font-weight: 700;
            transition: all var(--transition);
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        input {
            font-family: var(--font-stack);
            font-size: 14px;
        }

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

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

        /* ===== 顶级信息条 ===== */
        .top-bar {
            height: var(--top-bar-height);
            background: var(--primary);
            color: rgba(255, 255, 255, 0.85);
            font-size: 12px;
            display: flex;
            align-items: center;
            position: relative;
            z-index: 1001;
        }

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

        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .top-bar-left .live-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            animation: pulse-dot 2s ease-in-out infinite;
            flex-shrink: 0;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }

        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .top-bar-search {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-sm);
            padding: 3px 8px;
            font-size: 12px;
        }

        .top-bar-search svg {
            flex-shrink: 0;
            opacity: 0.7;
        }

        .top-bar-search input {
            background: none;
            border: none;
            color: #fff;
            width: 80px;
            font-size: 12px;
            outline: none;
        }

        .top-bar-search input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .top-bar-divider {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, 0.2);
        }

        .top-bar-link {
            color: rgba(255, 255, 255, 0.85);
            font-size: 12px;
            font-weight: 500;
            transition: color var(--transition);
            white-space: nowrap;
        }

        .top-bar-link:hover {
            color: var(--accent);
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }

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

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

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--accent) 0%, #00E0BC 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            font-size: 18px;
            letter-spacing: -1px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            line-height: 1;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .main-nav a {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            padding: 8px 0;
            position: relative;
            transition: color var(--transition);
        }

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

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

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--accent);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .nav-insights-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .nav-insights-link:hover {
            color: var(--accent);
            background: rgba(0, 201, 167, 0.06);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 700;
            line-height: 1.4;
            transition: all var(--transition);
            white-space: nowrap;
        }

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

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

        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border-color: #fff;
        }

        .btn-sm {
            padding: 7px 16px;
            font-size: 13px;
        }

        .nav-publish {
            border: 1.5px solid var(--accent);
            color: var(--accent);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 700;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-publish:hover {
            background: var(--accent);
            color: #fff;
        }

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

        .hamburger:hover {
            background: var(--bg-light-gray);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            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: calc(var(--header-height) + var(--top-bar-height));
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(16px);
            z-index: 999;
            padding: 24px;
            overflow-y: auto;
            flex-direction: column;
            gap: 4px;
        }

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

        .mobile-menu a {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            padding: 14px 0;
            border-bottom: 1px solid var(--border-light);
            transition: color var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent);
        }

        .mobile-menu .mobile-actions {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 16px;
        }

        /* ===== 分类头部 ===== */
        .category-header {
            background: var(--bg-light-gray);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

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

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

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

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

        .category-header h1 {
            font-size: 34px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--text-primary);
            margin: 0 0 12px;
            line-height: 1.3;
        }

        .category-header .category-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
            margin: 0;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 56px 0;
        }

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

        .section-title {
            font-size: 28px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--text-primary);
            margin: 0 0 8px;
            line-height: 1.35;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 32px;
            line-height: 1.7;
            max-width: 640px;
        }

        /* ===== 排序标签行 ===== */
        .sort-tabs {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .sort-tab {
            padding: 7px 18px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
        }

        .sort-tab:hover {
            color: var(--accent);
            border-color: var(--accent);
        }

        .sort-tab.active {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        /* ===== 文章列表 ===== */
        .article-list {
            display: flex;
            flex-direction: column;
        }

        .article-list-item {
            display: flex;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
            transition: all var(--transition);
        }

        .article-list-item:first-child {
            padding-top: 0;
        }

        .article-list-item:last-child {
            border-bottom: none;
        }

        .article-list-thumb {
            flex-shrink: 0;
            width: 140px;
            height: 105px;
            border-radius: 8px;
            overflow: hidden;
            background: var(--bg-light-gray);
        }

        .article-list-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }

        .article-list-item:hover .article-list-thumb img {
            transform: scale(1.05);
        }

        .article-list-content {
            flex: 1;
            min-width: 0;
        }

        .article-list-content h3 {
            font-size: 17px;
            font-weight: 700;
            margin: 0 0 6px;
            line-height: 1.5;
            color: var(--text-primary);
            transition: color var(--transition);
        }

        .article-list-item:hover .article-list-content h3 {
            color: var(--accent);
        }

        .article-list-content .article-excerpt {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0 0 8px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        .article-meta-row .read-more {
            color: var(--accent);
            font-weight: 600;
            font-size: 12px;
            display: inline-flex;
            align-items: center;
            gap: 3px;
            transition: color var(--transition);
            margin-left: auto;
        }

        .article-meta-row .read-more:hover {
            color: var(--accent-dark);
        }

        /* ===== 专题精选 ===== */
        .featured-topics {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding-bottom: 12px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }

        .featured-topics::-webkit-scrollbar {
            height: 6px;
        }

        .featured-topics::-webkit-scrollbar-track {
            background: var(--bg-light-gray);
            border-radius: 3px;
        }

        .featured-topics::-webkit-scrollbar-thumb {
            background: var(--text-muted);
            border-radius: 3px;
        }

        .topic-card {
            flex-shrink: 0;
            width: 280px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            scroll-snap-align: start;
            transition: all var(--transition);
        }

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

        .topic-card-thumb {
            width: 100%;
            height: 170px;
            overflow: hidden;
            background: var(--bg-light-gray);
        }

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

        .topic-card:hover .topic-card-thumb img {
            transform: scale(1.06);
        }

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

        .topic-card-body h3 {
            font-size: 16px;
            font-weight: 700;
            margin: 0 0 8px;
            line-height: 1.5;
        }

        .topic-card-body p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* ===== 分类数据条 ===== */
        .stats-bar {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            align-items: center;
            justify-content: space-between;
        }

        .stat-item {
            text-align: center;
            flex: 1;
            min-width: 120px;
        }

        .stat-number {
            font-size: 32px;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 4px;
        }

        /* ===== 标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }

        .tag-cloud-item {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            cursor: pointer;
        }

        .tag-cloud-item:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(0, 201, 167, 0.05);
        }

        .tag-cloud-item.size-sm {
            font-size: 12px;
            padding: 4px 13px;
        }

        .tag-cloud-item.size-md {
            font-size: 13px;
            padding: 6px 16px;
        }

        .tag-cloud-item.size-lg {
            font-size: 15px;
            padding: 8px 20px;
            font-weight: 700;
        }

        .tag-cloud-item.size-xl {
            font-size: 17px;
            padding: 10px 22px;
            font-weight: 800;
        }

        /* ===== 工具卡片 ===== */
        .tool-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .tool-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }

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

        .tool-card-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: rgba(0, 201, 167, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            flex-shrink: 0;
        }

        .tool-card-icon svg {
            color: var(--accent);
        }

        .tool-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin: 0 0 6px;
            line-height: 1.4;
        }

        .tool-card p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0 0 14px;
            line-height: 1.6;
        }

        .tool-card .tool-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition);
        }

        .tool-card .tool-link:hover {
            color: var(--accent-dark);
        }

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

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

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

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

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform var(--transition);
        }

        .faq-question .faq-icon::before,
        .faq-question .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--text-secondary);
            transition: all var(--transition);
        }

        .faq-question .faq-icon::before {
            width: 14px;
            height: 2px;
            border-radius: 1px;
        }

        .faq-question .faq-icon::after {
            width: 2px;
            height: 14px;
            border-radius: 1px;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition) ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 分类CTA ===== */
        .category-cta {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .category-cta-text {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            line-height: 1.6;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
            margin: 14px 0 0;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 13px;
            font-weight: 700;
            color: #fff;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin: 0 0 16px;
            line-height: 1.4;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }

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

        .footer-subscribe-form {
            display: flex;
            gap: 8px;
            margin-bottom: 12px;
        }

        .footer-subscribe-form input {
            flex: 1;
            height: 44px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-sm);
            padding: 0 14px;
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: border-color var(--transition);
            min-width: 0;
        }

        .footer-subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

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

        .footer-subscribe-form button {
            height: 44px;
            padding: 0 20px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 700;
            white-space: nowrap;
            transition: all var(--transition);
        }

        .footer-subscribe-form button:hover {
            background: var(--accent-dark);
        }

        .rss-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }

        .rss-link:hover {
            color: var(--accent);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding: 20px 0;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom span {
            color: #B9B7C2;
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .footer-bottom-links a {
            font-size: 13px;
            color: #B9B7C2;
            transition: color var(--transition);
        }

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

        .footer-bottom .footer-separator {
            color: rgba(255, 255, 255, 0.25);
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .main-nav {
                gap: 18px;
            }

            .main-nav a {
                font-size: 14px;
            }

            .tool-cards {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 56px;
            }

            .top-bar .container {
                justify-content: center;
            }

            .top-bar-right {
                display: none;
            }

            .top-bar-left {
                font-size: 11px;
                justify-content: center;
            }

            .site-header .container {
                height: 100%;
            }

            .main-nav {
                display: none;
            }

            .nav-actions {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .category-header {
                padding: 32px 0 28px;
            }

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

            .category-header .category-desc {
                font-size: 14px;
            }

            .section {
                padding: 36px 0;
            }

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

            .section-subtitle {
                font-size: 14px;
                margin-bottom: 24px;
            }

            .article-list-item {
                gap: 14px;
                padding: 16px 0;
            }

            .article-list-thumb {
                width: 100px;
                height: 75px;
            }

            .article-list-content h3 {
                font-size: 15px;
            }

            .article-list-content .article-excerpt {
                font-size: 12px;
                -webkit-line-clamp: 2;
            }

            .article-meta-row {
                flex-wrap: wrap;
                gap: 8px;
            }

            .stats-bar {
                padding: 20px;
                gap: 16px;
            }

            .stat-number {
                font-size: 24px;
            }

            .stat-label {
                font-size: 12px;
            }

            .tool-cards {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .category-cta {
                padding: 20px;
                flex-direction: column;
                text-align: center;
                gap: 14px;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }

            .footer-bottom-links {
                flex-wrap: wrap;
                justify-content: center;
                gap: 10px;
            }
        }

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

            .logo-text {
                font-size: 17px;
            }

            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }

            .article-list-item {
                flex-direction: column;
                gap: 10px;
            }

            .article-list-thumb {
                width: 100%;
                height: 160px;
            }

            .article-meta-row .read-more {
                margin-left: 0;
            }

            .topic-card {
                width: 240px;
            }

            .topic-card-thumb {
                height: 140px;
            }

            .stats-bar {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }

            .stat-item {
                min-width: auto;
            }

            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }

            .faq-answer-inner {
                padding: 0 16px 14px;
                font-size: 13px;
            }

            .category-cta-text {
                font-size: 14px;
            }

            .footer-subscribe-form {
                flex-direction: column;
                gap: 8px;
            }

            .footer-subscribe-form button {
                width: 100%;
            }
        }

/* 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}