/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #00e5ff;
            --primary-dark: #00b8d4;
            --primary-light: #64f0ff;
            --primary-glow: rgba(0, 229, 255, 0.25);
            --primary-glow-strong: rgba(0, 229, 255, 0.45);
            --secondary: #8b5cf6;
            --secondary-dark: #7c3aed;
            --secondary-glow: rgba(139, 92, 246, 0.25);
            --accent: #f59e0b;
            --accent-glow: rgba(245, 158, 11, 0.25);
            --bg-body: #08080f;
            --bg-card: #0f0f1e;
            --bg-card-hover: #16162a;
            --bg-elevated: #14142b;
            --bg-nav: rgba(8, 8, 15, 0.92);
            --bg-input: rgba(255, 255, 255, 0.06);
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --text-inverse: #0f172a;
            --border-color: rgba(0, 229, 255, 0.12);
            --border-hover: rgba(0, 229, 255, 0.3);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 40px rgba(0, 229, 255, 0.08);
            --shadow-glow-strong: 0 0 60px rgba(0, 229, 255, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-primary);
        }

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

        .container-sm {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-lg {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 霓虹导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-nav);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-height);
            transition: background var(--transition), border-color var(--transition);
        }

        .site-header.scrolled {
            background: rgba(8, 8, 15, 0.98);
            border-bottom-color: var(--border-hover);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            text-decoration: none;
            position: relative;
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-inverse);
            box-shadow: 0 0 20px var(--primary-glow);
        }

        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .logo .logo-sub {
            font-weight: 400;
            font-size: 13px;
            color: var(--text-muted);
            -webkit-text-fill-color: var(--text-muted);
            background: none;
            margin-left: 2px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: 0 0 10px var(--primary-glow);
            transition: transform var(--transition);
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(0, 229, 255, 0.06);
        }
        .main-nav a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }

        .main-nav a.active {
            color: var(--primary);
            background: rgba(0, 229, 255, 0.1);
        }
        .main-nav a.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-cta {
            padding: 8px 22px !important;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
            color: var(--text-inverse) !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            box-shadow: 0 0 20px var(--primary-glow);
            transition: all var(--transition) !important;
        }

        .nav-cta::after {
            display: none !important;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 35px var(--primary-glow-strong) !important;
            background: linear-gradient(135deg, var(--primary-light), var(--primary)) !important;
            color: var(--text-inverse) !important;
        }

        /* 移动端汉堡 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            background: none;
            border: none;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-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;
            transform: scaleX(0);
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            padding: 140px 0 80px;
            position: relative;
            overflow: hidden;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: linear-gradient(180deg, #08080f 0%, #0a0a1a 50%, #0d0d24 100%);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            left: -10%;
            width: 70%;
            height: 80%;
            background: radial-gradient(ellipse at center, rgba(0, 229, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            right: -10%;
            width: 60%;
            height: 60%;
            background: radial-gradient(ellipse at center, rgba(139, 92, 246, 0.05) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.2);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }

        .hero-badge i {
            font-size: 12px;
        }

        .hero h1 {
            font-size: clamp(36px, 5vw, 58px);
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 20px;
            letter-spacing: -1.5px;
        }

        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 540px;
            margin-bottom: 36px;
            line-height: 1.8;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            letter-spacing: 0.3px;
            text-decoration: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-inverse);
            box-shadow: 0 0 25px var(--primary-glow);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 45px var(--primary-glow-strong);
            color: var(--text-inverse);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
            color: var(--text-primary);
        }

        .btn-glow {
            background: linear-gradient(135deg, var(--secondary), #6d28d9);
            color: #fff;
            box-shadow: 0 0 25px var(--secondary-glow);
        }
        .btn-glow:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 45px rgba(139, 92, 246, 0.4);
            color: #fff;
        }

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

        .hero-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            width: 100%;
            max-width: 460px;
            box-shadow: var(--shadow-glow), var(--shadow-lg);
            backdrop-filter: blur(10px);
        }

        .hero-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-card-header h3 {
            font-size: 18px;
            font-weight: 700;
        }

        .hero-card-header .status {
            font-size: 13px;
            color: #22c55e;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-card-header .status i {
            font-size: 10px;
        }

        .hero-form .form-group {
            margin-bottom: 18px;
        }

        .hero-form .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }

        .hero-form .form-group input {
            width: 100%;
            padding: 12px 16px;
            background: var(--bg-input);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 14px;
            transition: all var(--transition);
        }

        .hero-form .form-group input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 20px var(--primary-glow);
            background: rgba(0, 229, 255, 0.04);
        }

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

        .hero-form .btn {
            width: 100%;
            justify-content: center;
            margin-top: 8px;
        }

        .hero-form .form-footer {
            display: flex;
            justify-content: space-between;
            margin-top: 16px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .hero-form .form-footer a {
            color: var(--primary);
            font-weight: 500;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 100px 0;
            position: relative;
        }

        .section-dark {
            background: var(--bg-body);
        }

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

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-header h2 {
            font-size: clamp(28px, 3.5vw, 40px);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }

        .section-header h2 .highlight {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-header p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 4px 14px;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.15);
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        /* ===== 特色卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            opacity: 0;
            transition: opacity var(--transition);
        }

        .feature-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow), var(--shadow-md);
            background: var(--bg-card-hover);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(0, 229, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 20px;
            transition: all var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: rgba(0, 229, 255, 0.18);
            box-shadow: 0 0 30px var(--primary-glow);
        }

        .feature-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        /* ===== 分类入口 ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .category-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition);
            text-decoration: none;
            display: block;
            position: relative;
            overflow: hidden;
        }

        .category-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            transition: width var(--transition);
            border-radius: 2px;
        }

        .category-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-5px);
            box-shadow: var(--shadow-glow), var(--shadow-md);
            background: var(--bg-card-hover);
        }

        .category-card:hover::after {
            width: 80%;
        }

        .category-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(139, 92, 246, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--secondary);
            margin: 0 auto 16px;
            transition: all var(--transition);
        }

        .category-card:hover .category-icon {
            background: rgba(139, 92, 246, 0.2);
            box-shadow: 0 0 25px var(--secondary-glow);
        }

        .category-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
        }

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

        /* ===== 内容/资讯列表 ===== */
        .content-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .content-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .content-item:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow), var(--shadow-md);
            background: var(--bg-card-hover);
        }

        .content-item .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .content-item .meta .tag {
            padding: 2px 10px;
            background: rgba(0, 229, 255, 0.08);
            border-radius: 50px;
            font-size: 11px;
            font-weight: 600;
            color: var(--primary);
        }

        .content-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .content-item h3 a {
            color: var(--text-primary);
            transition: color var(--transition);
        }
        .content-item h3 a:hover {
            color: var(--primary);
        }

        .content-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
        }

        .content-item .read-more {
            margin-top: 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .content-item .read-more i {
            font-size: 12px;
            transition: transform var(--transition);
        }
        .content-item:hover .read-more i {
            transform: translateX(4px);
        }

        .empty-msg {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            font-size: 16px;
            background: var(--bg-card);
            border: 1px dashed var(--border-color);
            border-radius: var(--radius-md);
        }

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

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }

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

        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-inverse);
            font-weight: 800;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 0 20px var(--primary-glow);
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
        }

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

        .step-connector {
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            opacity: 0.4;
        }

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

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

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

        .faq-item.active {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow);
        }

        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-primary);
            transition: color var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

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

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.04), rgba(139, 92, 246, 0.04));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 70%;
            height: 200%;
            background: radial-gradient(ellipse at center, rgba(0, 229, 255, 0.04) 0%, transparent 60%);
            pointer-events: none;
        }

        .cta-box {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .cta-box h2 {
            font-size: clamp(26px, 3vw, 38px);
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-box p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

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

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }

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

        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

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

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

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }

        .footer-bottom-links a {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom-links a:hover {
            color: var(--primary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .categories-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-visual {
                order: -1;
            }
            .hero-card {
                max-width: 100%;
            }
            .hero {
                padding: 120px 0 60px;
                min-height: auto;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-nav);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-slow);
                pointer-events: none;
                gap: 4px;
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }

            .main-nav a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .main-nav a::after {
                display: none;
            }
            .main-nav a.active {
                background: rgba(0, 229, 255, 0.12);
            }

            .nav-cta {
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }

            .hamburger {
                display: flex;
            }

            .features-grid {
                grid-template-columns: 1fr;
            }
            .categories-grid {
                grid-template-columns: 1fr 1fr;
            }
            .content-list {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section {
                padding: 60px 0;
            }
            .section-header {
                margin-bottom: 40px;
            }
            .hero-grid {
                gap: 32px;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero p {
                font-size: 16px;
            }
            .hero-buttons {
                flex-direction: column;
            }
            .hero-buttons .btn {
                width: 100%;
                justify-content: center;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .cta-buttons .btn {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .categories-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .hero {
                padding: 100px 0 40px;
            }
            .hero-card {
                padding: 28px 20px;
            }
            .feature-card {
                padding: 24px 20px;
            }
            .content-item {
                padding: 20px 18px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }
            .footer-grid {
                gap: 24px;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }

        /* ===== 霓虹装饰线 ===== */
        .neon-divider {
            width: 80px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 2px;
            margin: 0 auto 20px;
            box-shadow: 0 0 20px var(--primary-glow);
        }

/* roulang page: category1 */
/* ===== CSS Variables ===== */
        :root {
            --primary: #00f0ff;
            --primary-dark: #00b8c4;
            --primary-glow: rgba(0, 240, 255, 0.35);
            --accent: #ff2d75;
            --accent-glow: rgba(255, 45, 117, 0.35);
            --bg-dark: #0b0d17;
            --bg-card: #131626;
            --bg-card-hover: #1a1e3a;
            --bg-section: #0f1222;
            --text-main: #e8eaf0;
            --text-muted: #8b8fa8;
            --text-dim: #5c607a;
            --border-color: rgba(0, 240, 255, 0.12);
            --border-glow: rgba(0, 240, 255, 0.25);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.55);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --header-h: 72px;
            --max-width: 1200px;
            --gap: 28px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            min-height: 100vh;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: #fff; text-shadow: 0 0 8px var(--primary-glow); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; border: none; }
        ul { list-style: none; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-dark); }
        ::-webkit-scrollbar-thumb { background: var(--primary-dark); border-radius: 8px; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky; top: 0; z-index: 100;
            background: rgba(11, 13, 23, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.5rem;
            color: #fff;
            letter-spacing: -0.5px;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .logo:hover { color: var(--primary); text-shadow: 0 0 16px var(--primary-glow); }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px; height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            font-size: 1.1rem;
            color: #fff;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.25);
        }
        .logo-sub {
            font-size: 0.7rem;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 0.3px;
            margin-left: 2px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover {
            color: #fff;
            background: rgba(0, 240, 255, 0.07);
        }
        .main-nav a.active {
            color: var(--primary);
            background: rgba(0, 240, 255, 0.10);
            box-shadow: inset 0 -2px 0 var(--primary), 0 0 18px rgba(0, 240, 255, 0.08);
        }
        .main-nav a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0b0d17;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 30px;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.20);
            margin-left: 8px;
        }
        .main-nav a.nav-cta:hover {
            background: linear-gradient(135deg, #fff, var(--primary));
            color: #0b0d17;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.35);
            transform: scale(1.03);
        }
        .main-nav a.nav-cta i { margin-right: 6px; }

        /* ===== Mobile Nav Toggle ===== */
        .nav-toggle {
            display: none;
            background: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: var(--transition);
        }
        .nav-toggle:hover { color: var(--primary); background: rgba(0, 240, 255, 0.08); }

        /* ===== Page Hero ===== */
        .page-hero {
            padding: 60px 0 50px;
            background: linear-gradient(160deg, var(--bg-dark) 0%, var(--bg-section) 60%, #0d1025 100%);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -40%; right: -10%;
            width: 500px; height: 500px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.06), transparent 70%);
            pointer-events: none;
        }
        .page-hero .container { position: relative; z-index: 1; }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 30%, var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 700px;
            line-height: 1.8;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--border-glow);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: var(--primary);
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .page-hero .hero-badge i { font-size: 0.8rem; }

        /* ===== Section ===== */
        .section {
            padding: 70px 0;
        }
        .section-alt {
            background: var(--bg-section);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
            color: #fff;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 40px;
            max-width: 640px;
        }
        .section-divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin-bottom: 24px;
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card), var(--shadow-glow);
            transform: translateY(-4px);
        }
        .card-icon {
            width: 48px; height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 18px;
            background: rgba(0, 240, 255, 0.10);
            color: var(--primary);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.08);
        }
        .card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: #fff;
        }
        .card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .card .card-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
            background: rgba(0, 240, 255, 0.08);
            color: var(--primary);
            border: 1px solid var(--border-glow);
            margin-top: 12px;
        }

        /* ===== Grid ===== */
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); }
        .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--gap); }
        .grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: var(--gap); }

        /* ===== Step / Timeline ===== */
        .step-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            transition: var(--transition);
        }
        .step-item:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .step-num {
            flex-shrink: 0;
            width: 42px; height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0b0d17;
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.20);
        }
        .step-content h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
        }
        .step-content p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* ===== FAQ ===== */
        .faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 860px; }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--border-glow); }
        .faq-question {
            padding: 18px 22px;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 1rem;
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { transition: transform 0.3s; color: var(--text-muted); font-size: 0.9rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 22px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            border-top: 0 solid var(--border-color);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 16px 22px 20px;
            border-top-width: 1px;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(145deg, var(--bg-card), #151b38);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            text-align: center;
            box-shadow: var(--shadow-card), var(--shadow-glow);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -30%; left: -20%;
            width: 300px; height: 300px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.05), transparent 70%);
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }
        .cta-box p {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0b0d17;
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.20);
        }
        .btn:hover {
            background: linear-gradient(135deg, #fff, var(--primary));
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.35);
            transform: translateY(-2px) scale(1.02);
            color: #0b0d17;
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--border-glow);
            color: var(--primary);
            box-shadow: none;
        }
        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.08);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.12);
        }

        /* ===== Tags / Badges ===== */
        .tag-group { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            background: rgba(0, 240, 255, 0.06);
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .tag:hover { color: var(--primary); border-color: var(--border-glow); background: rgba(0, 240, 255, 0.10); }

        /* ===== Alert / Info Bar ===== */
        .info-bar {
            display: flex;
            align-items: center;
            gap: 14px;
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-sm);
            padding: 14px 20px;
            color: var(--primary);
            font-size: 0.95rem;
            margin-bottom: 28px;
        }
        .info-bar i { font-size: 1.2rem; }

        /* ===== Stats Row ===== */
        .stats-row {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
            justify-content: center;
            margin: 30px 0;
        }
        .stat-item {
            text-align: center;
            padding: 16px 28px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            min-width: 130px;
        }
        .stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 50px 0 24px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand .logo { font-size: 1.4rem; margin-bottom: 16px; display: inline-flex; }
        .footer-brand p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.8; max-width: 360px; }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .footer-bottom-links { display: flex; gap: 18px; }
        .footer-bottom-links a { color: var(--text-dim); font-size: 0.85rem; }
        .footer-bottom-links a:hover { color: var(--primary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --header-h: 64px; }
            .nav-toggle { display: block; }
            .main-nav {
                position: fixed;
                top: var(--header-h);
                left: 0; right: 0;
                background: rgba(11, 13, 23, 0.97);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 8px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 16px 40px rgba(0,0,0,0.7);
                transform: translateY(-120%);
                opacity: 0;
                transition: transform 0.4s ease, opacity 0.3s ease;
                pointer-events: none;
                z-index: 99;
            }
            .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .main-nav a { padding: 12px 18px; width: 100%; border-radius: var(--radius-sm); }
            .main-nav a.nav-cta { margin-left: 0; text-align: center; margin-top: 6px; }

            .page-hero h1 { font-size: 2rem; }
            .page-hero p { font-size: 1rem; }

            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }

            .section { padding: 50px 0; }
            .section-title { font-size: 1.6rem; }

            .cta-box { padding: 36px 20px; }
            .cta-box h2 { font-size: 1.5rem; }

            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .footer-bottom-links { justify-content: center; }

            .step-item { flex-direction: column; align-items: flex-start; }
            .stats-row { gap: 16px; }
            .stat-item { min-width: 100px; padding: 12px 18px; }
            .stat-item .num { font-size: 1.6rem; }
        }
        @media (max-width: 520px) {
            .page-hero h1 { font-size: 1.6rem; }
            .page-hero p { font-size: 0.92rem; }
            .logo { font-size: 1.2rem; }
            .logo-icon { width: 32px; height: 32px; font-size: 0.95rem; }
            .btn { padding: 12px 24px; font-size: 0.92rem; }
            .card { padding: 20px 16px; }
            .faq-question { font-size: 0.92rem; padding: 14px 16px; }
            .faq-answer { font-size: 0.88rem; }
        }

/* roulang page: article */
/* ===== DESIGN VARIABLES ===== */
        :root {
            --clr-bg: #080c18;
            --clr-bg-alt: #0d1326;
            --clr-bg-card: #111a30;
            --clr-bg-elevated: #162040;
            --clr-surface: #0f1a2e;
            --clr-primary: #00d4ff;
            --clr-primary-dim: #009bbd;
            --clr-primary-glow: rgba(0, 212, 255, 0.25);
            --clr-secondary: #8b5cf6;
            --clr-secondary-glow: rgba(139, 92, 246, 0.2);
            --clr-accent: #f59e0b;
            --clr-text: #e8edf5;
            --clr-text-dim: #8899b4;
            --clr-text-muted: #5a6e8a;
            --clr-border: rgba(0, 212, 255, 0.12);
            --clr-border-light: rgba(0, 212, 255, 0.06);
            --clr-success: #10b981;
            --clr-danger: #ef4444;
            --clr-warning: #f59e0b;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.08);
            --font-base: 16px;
            --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height: 72px;
            --max-width: 1200px;
            --content-width: 800px;
        }

        /* ===== RESET & BASE ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-body);
            font-size: var(--font-base);
            line-height: 1.7;
            background: var(--clr-bg);
            color: var(--clr-text);
            min-height: 100vh;
        }
        a { color: var(--clr-primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: #66e5ff; }
        a:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: 2px; border-radius: 2px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        button, input, textarea, select { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: #fff; }

        /* ===== CONTAINER ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== HEADER / NAV (暗色霓虹) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(8, 12, 24, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--clr-border);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            transition: opacity var(--transition);
        }
        .logo:hover { opacity: 0.85; color: #fff; }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 1.2rem;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
        }
        .logo-sub {
            font-weight: 400;
            color: var(--clr-primary);
            font-size: 0.7em;
            margin-left: 2px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--clr-text-dim);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: #fff;
            background: rgba(0, 212, 255, 0.08);
        }
        .main-nav a.active {
            color: #fff;
            background: rgba(0, 212, 255, 0.12);
            box-shadow: inset 0 0 0 1px rgba(0, 212, 255, 0.2), 0 0 20px rgba(0, 212, 255, 0.05);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--clr-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--clr-primary);
        }
        .main-nav .nav-cta {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            color: #fff !important;
            font-weight: 600;
            padding: 8px 22px;
            box-shadow: 0 0 24px rgba(0, 212, 255, 0.15);
            border-radius: 30px;
        }
        .main-nav .nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 36px rgba(0, 212, 255, 0.3);
            background: linear-gradient(135deg, #00e5ff, #9d71ff);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .mobile-toggle:hover { background: rgba(0, 212, 255, 0.08); }

        /* ===== ARTICLE HERO ===== */
        .article-hero {
            padding: 140px 0 60px;
            background: linear-gradient(180deg, #0a0f22 0%, var(--clr-bg) 100%);
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -200px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0,212,255,0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(139,92,246,0.05) 0%, transparent 70%);
            pointer-events: none;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--clr-text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a { color: var(--clr-text-muted); }
        .article-breadcrumb a:hover { color: var(--clr-primary); }
        .article-breadcrumb .sep { color: var(--clr-text-muted); opacity: 0.4; }
        .article-hero .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.82rem;
            font-weight: 600;
            background: rgba(0, 212, 255, 0.12);
            color: var(--clr-primary);
            border: 1px solid rgba(0, 212, 255, 0.15);
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .article-hero h1 {
            font-size: clamp(1.8rem, 4.5vw, 3rem);
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
            max-width: 900px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            color: var(--clr-text-dim);
            font-size: 0.9rem;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i { color: var(--clr-primary); opacity: 0.7; }
        .article-meta .meta-divider {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--clr-text-muted);
            opacity: 0.3;
        }
        .article-hero .hero-image-wrap {
            margin-top: 32px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg), 0 0 40px rgba(0,212,255,0.04);
            border: 1px solid var(--clr-border);
            background: var(--clr-bg-alt);
            max-height: 460px;
        }
        .article-hero .hero-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ===== ARTICLE BODY ===== */
        .article-body-section {
            padding: 60px 0 40px;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--clr-text);
        }
        .article-body h2 {
            font-size: 1.7rem;
            margin-top: 48px;
            margin-bottom: 16px;
            color: #fff;
            border-left: 4px solid var(--clr-primary);
            padding-left: 18px;
            box-shadow: -2px 0 20px rgba(0,212,255,0.06);
        }
        .article-body h3 {
            font-size: 1.3rem;
            margin-top: 36px;
            margin-bottom: 12px;
            color: #f0f4ff;
        }
        .article-body p {
            margin-bottom: 20px;
            color: #d0d8e8;
        }
        .article-body strong { color: #fff; font-weight: 600; }
        .article-body ul, .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        .article-body ul li {
            list-style: disc;
            margin-bottom: 6px;
            color: #d0d8e8;
        }
        .article-body ol li {
            list-style: decimal;
            margin-bottom: 6px;
            color: #d0d8e8;
        }
        .article-body li::marker { color: var(--clr-primary); }
        .article-body blockquote {
            margin: 28px 0;
            padding: 20px 28px;
            background: rgba(0, 212, 255, 0.04);
            border-left: 4px solid var(--clr-primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: #c0d0e8;
            font-style: italic;
            box-shadow: inset 0 0 30px rgba(0,212,255,0.02);
        }
        .article-body blockquote p:last-child { margin-bottom: 0; }
        .article-body code {
            font-family: var(--font-mono);
            background: rgba(0, 212, 255, 0.08);
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--clr-primary);
            border: 1px solid rgba(0, 212, 255, 0.08);
        }
        .article-body pre {
            margin: 28px 0;
            padding: 24px;
            background: #060b18;
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            overflow-x: auto;
            font-family: var(--font-mono);
            font-size: 0.9rem;
            color: #c8d8f0;
            box-shadow: inset 0 0 30px rgba(0,0,0,0.3);
        }
        .article-body pre code {
            background: none;
            padding: 0;
            border: none;
            color: inherit;
            font-size: inherit;
        }
        .article-body img {
            margin: 32px auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--clr-border);
            max-width: 100%;
        }
        .article-body a { color: var(--clr-primary); text-decoration: underline; text-underline-offset: 3px; }
        .article-body a:hover { color: #66e5ff; }

        /* ===== ARTICLE FOOTER (tags / share) ===== */
        .article-footer-bar {
            padding: 40px 0;
            border-top: 1px solid var(--clr-border);
            border-bottom: 1px solid var(--clr-border);
            margin-top: 20px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
        }
        .article-tags .label {
            color: var(--clr-text-dim);
            font-size: 0.9rem;
            font-weight: 500;
        }
        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 5px 16px;
            border-radius: 30px;
            font-size: 0.82rem;
            font-weight: 500;
            background: rgba(0, 212, 255, 0.06);
            color: var(--clr-text-dim);
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
        }
        .tag-item:hover {
            background: rgba(0, 212, 255, 0.12);
            color: var(--clr-primary);
            border-color: rgba(0, 212, 255, 0.2);
        }
        .share-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .share-bar .label {
            color: var(--clr-text-dim);
            font-size: 0.9rem;
            font-weight: 500;
        }
        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--clr-bg-card);
            color: var(--clr-text-dim);
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
            font-size: 1rem;
        }
        .share-btn:hover {
            background: var(--clr-primary);
            color: #fff;
            border-color: var(--clr-primary);
            transform: translateY(-2px);
            box-shadow: 0 0 24px rgba(0,212,255,0.2);
        }

        /* ===== POST NAVIGATION ===== */
        .post-navigation {
            padding: 40px 0;
        }
        .post-nav-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .post-nav-card {
            padding: 24px;
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
        }
        .post-nav-card:hover {
            border-color: rgba(0, 212, 255, 0.2);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .post-nav-card .dir {
            font-size: 0.8rem;
            color: var(--clr-text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .post-nav-card .dir i { color: var(--clr-primary); opacity: 0.6; }
        .post-nav-card .title {
            font-size: 1rem;
            font-weight: 600;
            color: #e0e8f5;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-nav-card:hover .title { color: #fff; }
        .post-nav-card.next { text-align: right; }
        .post-nav-card.next .dir { justify-content: flex-end; }

        /* ===== RELATED POSTS ===== */
        .related-section {
            padding: 60px 0;
            background: var(--clr-bg-alt);
        }
        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }
        .related-section .section-sub {
            color: var(--clr-text-dim);
            margin-bottom: 36px;
            font-size: 0.95rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .related-card:hover {
            border-color: rgba(0, 212, 255, 0.2);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .related-card .card-img {
            height: 170px;
            background: var(--clr-bg-elevated);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--clr-text-muted);
            font-size: 2rem;
            border-bottom: 1px solid var(--clr-border);
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .related-card .card-body {
            padding: 20px;
        }
        .related-card .card-cat {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--clr-primary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .related-card .card-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: #e8edf5;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }
        .related-card:hover .card-title { color: #fff; }
        .related-card .card-date {
            font-size: 0.82rem;
            color: var(--clr-text-muted);
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #0a0f22 0%, #111a30 50%, #0d1326 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            left: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0,212,255,0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -120px;
            right: -120px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(139,92,246,0.04) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .cta-inner h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-inner p {
            color: var(--clr-text-dim);
            max-width: 600px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .btn-primary-lg {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 0 30px rgba(0, 212, 255, 0.15);
        }
        .btn-primary-lg:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 50px rgba(0, 212, 255, 0.3);
            color: #fff;
        }
        .btn-outline-lg {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--clr-text);
            background: transparent;
            border: 1px solid var(--clr-border);
            cursor: pointer;
            transition: all var(--transition);
        }
        .btn-outline-lg:hover {
            border-color: var(--clr-primary);
            color: var(--clr-primary);
            background: rgba(0, 212, 255, 0.04);
        }

        /* ===== FOOTER (复用首页) ===== */
        .site-footer {
            background: #060b18;
            border-top: 1px solid var(--clr-border);
            padding: 60px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .site-footer .footer-brand .logo { margin-bottom: 16px; }
        .site-footer .footer-brand p {
            color: var(--clr-text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #c8d8f0;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-col ul li { margin-bottom: 10px; }
        .site-footer .footer-col ul li a {
            color: var(--clr-text-muted);
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .site-footer .footer-col ul li a:hover { color: var(--clr-primary); }
        .footer-bottom {
            padding: 24px 0;
            border-top: 1px solid var(--clr-border-light);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .footer-bottom p {
            color: var(--clr-text-muted);
            font-size: 0.82rem;
        }
        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom-links a {
            color: var(--clr-text-muted);
            font-size: 0.82rem;
        }
        .footer-bottom-links a:hover { color: var(--clr-primary); }

        /* ===== NOT FOUND STATE ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found-box .nf-icon {
            font-size: 4rem;
            color: var(--clr-text-muted);
            margin-bottom: 24px;
            opacity: 0.3;
        }
        .not-found-box h2 {
            font-size: 1.8rem;
            color: #fff;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--clr-text-dim);
            margin-bottom: 28px;
        }
        .not-found-box .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 30px;
            background: var(--clr-primary);
            color: #0a0e1a;
            font-weight: 700;
            transition: all var(--transition);
        }
        .not-found-box .btn-back:hover { background: #66e5ff; color: #0a0e1a; }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 820px) {
            .post-nav-grid { grid-template-columns: 1fr; }
            .post-nav-card.next { text-align: left; }
            .post-nav-card.next .dir { justify-content: flex-start; }
        }
        @media (max-width: 768px) {
            .mobile-toggle { display: block; }
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(8, 12, 24, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--clr-border);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
                box-shadow: var(--shadow-lg);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                width: 100%;
                justify-content: center;
                padding: 12px 18px;
                font-size: 1rem;
            }
            .main-nav a.active::after { display: none; }
            .main-nav a.active { background: rgba(0, 212, 255, 0.12); }
            .main-nav .nav-cta { margin-top: 6px; }
            .article-hero { padding: 120px 0 40px; }
            .article-hero h1 { font-size: clamp(1.4rem, 5vw, 2rem); }
            .article-meta { gap: 12px; font-size: 0.82rem; }
            .article-meta .meta-divider { display: none; }
            .article-body { font-size: 0.98rem; }
            .article-body h2 { font-size: 1.35rem; }
            .article-body h3 { font-size: 1.1rem; }
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .footer-bottom-links { justify-content: center; }
            .cta-section { padding: 60px 0; }
            .btn-primary-lg, .btn-outline-lg { padding: 14px 28px; font-size: 1rem; }
            .related-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-hero { padding: 110px 0 30px; }
            .article-hero h1 { font-size: 1.35rem; }
            .article-body { font-size: 0.92rem; }
            .related-grid { grid-template-columns: 1fr; }
            .share-bar .label { width: 100%; }
            .article-tags .label { width: 100%; }
            .cta-buttons { flex-direction: column; align-items: center; }
            .btn-primary-lg, .btn-outline-lg { width: 100%; justify-content: center; }
            .logo { font-size: 1.2rem; }
            .logo-icon { width: 32px; height: 32px; font-size: 1rem; }
        }

        /* ===== SCROLLBAR ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--clr-bg); }
        ::-webkit-scrollbar-thumb { background: var(--clr-text-muted); border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--clr-primary-dim); }

        /* ===== SELECTION ===== */
        ::selection { background: rgba(0, 212, 255, 0.2); color: #fff; }