:root {
            --bg-deep: #040A08;
            --bg-card: rgba(10, 26, 20, 0.5);
            --border-subtle: rgba(255, 255, 255, 0.05);
            --border-glow: rgba(16, 185, 129, 0.28);
            --accent-300: #6EE7B7;
            --accent-400: #34D399;
            --accent-500: #10B981;
            --accent-600: #059669;
            --accent-700: #047857;
            --teal-400: #2DD4BF;
            --text-primary: #EDEDF0;
            --text-secondary: #9CA3AF;
            --text-muted: #6B7280;
            --amber: #FBBF24;
            --radius-xl: 32px;
            --radius-2xl: 48px;
            --radius-3xl: 64px;
            --transition-fast: 0.2s;
            --transition-smooth: 0.28s;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: var(--bg-deep);
            color: var(--text-primary);
            overflow-x: hidden;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        .glow-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(circle at 18% 35%, rgba(16, 185, 129, 0.06) 0%, rgba(4, 10, 8, 0) 55%),
                radial-gradient(circle at 80% 60%, rgba(20, 184, 166, 0.04) 0%, rgba(4, 10, 8, 0) 50%);
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
            position: relative;
            z-index: 2;
        }
        /* Header */
        header {
            background: rgba(4, 10, 8, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            background: linear-gradient(125deg, #FFFFFF, #34D399, #10B981);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            white-space: nowrap;
        }
        .logo .icon-rocket {
            display: inline-block;
            margin-right: 3px;
            animation: rocketBounce 2s ease-in-out infinite;
        }
        @keyframes rocketBounce {
            0%,
            100% {
                transform: translateY(0);
            }
            30% {
                transform: translateY(-6px);
            }
            50% {
                transform: translateY(0);
            }
            70% {
                transform: translateY(-3px);
            }
        }
        .nav-links {
            display: flex;
            gap: 28px;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-links a {
            text-decoration: none;
            font-weight: 500;
            color: #A1A1AA;
            transition: var(--transition-fast);
            font-size: 0.88rem;
            white-space: nowrap;
            position: relative;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--accent-500);
            transition: var(--transition-fast);
            transform: translateX(-50%);
            border-radius: 2px;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-400);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 60%;
        }

        /* Hero 搜索式首屏 */
        .hero-faq {
            padding: 70px 0 40px;
            text-align: center;
        }
        .section-badge {
            display: inline-block;
            background: rgba(16, 185, 129, 0.13);
            border: 1px solid rgba(16, 185, 129, 0.3);
            padding: 6px 18px;
            border-radius: 60px;
            font-size: 0.74rem;
            font-weight: 500;
            color: var(--accent-400);
            margin-bottom: 22px;
        }
        .hero-faq h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.16;
            letter-spacing: -0.025em;
            margin-bottom: 14px;
        }
        .hero-gradient {
            background: linear-gradient(135deg, #FFFFFF 18%, #34D399 48%, #14B8A6 88%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .search-box {
            max-width: 580px;
            margin: 28px auto 20px;
            background: rgba(10, 26, 20, 0.6);
            border: 1px solid rgba(16, 185, 129, 0.2);
            border-radius: 60px;
            padding: 8px 20px;
            display: flex;
            align-items: center;
            backdrop-filter: blur(8px);
        }
        .search-box input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-primary);
            font-size: 0.95rem;
            padding: 10px 0;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
            font-size: 0.88rem;
        }
        .search-icon {
            font-size: 1.2rem;
            margin-right: 8px;
            color: var(--accent-400);
        }
        .hot-questions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-top: 18px;
        }
        .hot-question {
            background: rgba(16, 185, 129, 0.06);
            border: 1px solid rgba(16, 185, 129, 0.18);
            padding: 6px 18px;
            border-radius: 28px;
            font-size: 0.78rem;
            color: var(--accent-300);
            cursor: pointer;
            transition: var(--transition-fast);
            text-decoration: none;
        }
        .hot-question:hover {
            background: rgba(16, 185, 129, 0.15);
            border-color: var(--accent-400);
            color: #fff;
        }

        /* 分类系统 */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
            margin: 50px 0;
        }
        .cat-card {
            background: rgba(10, 26, 20, 0.45);
            border-radius: 24px;
            padding: 24px 20px;
            border: 1px solid rgba(255, 255, 255, 0.04);
            transition: var(--transition-smooth);
        }
        .cat-card:hover {
            border-color: var(--accent-500);
            background: rgba(16, 38, 28, 0.5);
            transform: translateY(-2px);
        }
        .cat-card h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .cat-card ul {
            list-style: none;
            padding: 0;
        }
        .cat-card ul li {
            margin-bottom: 8px;
        }
        .cat-card ul li a {
            color: #B0B7C3;
            text-decoration: none;
            font-size: 0.86rem;
            transition: var(--transition-fast);
            display: inline-block;
        }
        .cat-card ul li a:hover {
            color: var(--accent-400);
            text-decoration: underline;
        }

        /* 智能修复流程 */
        .fix-flow {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            margin: 40px 0;
        }
        .fix-step {
            background: rgba(10, 26, 20, 0.5);
            border-radius: 24px;
            padding: 22px 18px;
            text-align: center;
            flex: 1 1 160px;
            max-width: 200px;
            border: 1px solid rgba(255, 255, 255, 0.04);
            transition: var(--transition-smooth);
        }
        .fix-step:hover {
            border-color: var(--accent-500);
            background: rgba(16, 38, 28, 0.55);
            transform: translateY(-3px);
        }
        .fix-step .step-num {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--accent-600);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .fix-step h4 {
            font-size: 0.95rem;
            margin-bottom: 6px;
        }
        .fix-step p {
            font-size: 0.76rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .fix-step .step-link {
            color: var(--accent-400);
            font-weight: 600;
            font-size: 0.8rem;
            text-decoration: none;
        }
        .fix-step .step-link:hover {
            text-decoration: underline;
        }

        /* 错误代码百科表格 */
        .error-table-wrap {
            overflow-x: auto;
            margin: 30px 0;
        }
        .error-table {
            width: 100%;
            border-collapse: collapse;
            color: #CBD5E1;
            font-size: 0.9rem;
        }
        .error-table th {
            background: rgba(16, 185, 129, 0.08);
            padding: 14px 16px;
            text-align: left;
            font-weight: 600;
            border-bottom: 1px solid rgba(16, 185, 129, 0.15);
        }
        .error-table td {
            padding: 12px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.03);
            vertical-align: top;
        }
        .error-table tr:hover td {
            background: rgba(16, 185, 129, 0.03);
        }
        .error-code {
            font-family: 'SF Mono', monospace;
            color: var(--accent-400);
            font-weight: 600;
        }

        /* 内链CTA */
        .cta-inline {
            background: linear-gradient(115deg, #0A1A14, #0F241C);
            border-radius: var(--radius-2xl);
            border: 1px solid rgba(16, 185, 129, 0.2);
            padding: 38px 28px;
            margin: 50px 0;
            text-align: center;
        }
        .cta-inline h2 {
            font-size: 1.6rem;
            margin-bottom: 14px;
        }
        .cta-inline .link-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 20px;
        }
        .cta-inline .link-btn {
            background: rgba(16, 185, 129, 0.08);
            border: 1px solid var(--accent-500);
            color: var(--accent-400);
            padding: 12px 26px;
            border-radius: 40px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition-fast);
            font-size: 0.88rem;
        }
        .cta-inline .link-btn:hover {
            background: var(--accent-500);
            color: #fff;
            box-shadow: 0 0 22px rgba(16, 185, 129, 0.4);
        }

        /* SEO长文 */
        .seo-content {
            padding: 50px 0 60px;
            border-top: 1px solid rgba(255, 255, 255, 0.03);
            color: #B0B7C3;
            font-size: 0.94rem;
            line-height: 1.85;
        }
        .seo-content h2 {
            font-size: 1.65rem;
            color: #E2E8F0;
            margin: 30px 0 15px;
            font-weight: 700;
        }
        .seo-content h3 {
            font-size: 1.2rem;
            color: #CBD5E1;
            margin: 22px 0 9px;
            font-weight: 600;
        }
        .seo-content p {
            margin-bottom: 13px;
        }
        .seo-content ul {
            margin: 9px 0 14px 20px;
            list-style-type: disc;
        }
        .seo-content ul li {
            margin-bottom: 5px;
        }
        .seo-content strong {
            color: #D1D5DB;
        }
        .seo-content a {
            color: var(--accent-400);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .seo-content a:hover {
            color: var(--accent-300);
        }

        /* Footer */
        footer {
            background: #020806;
            padding: 45px 0 26px;
            border-top: 1px solid rgba(255, 255, 255, 0.02);
            font-size: 0.83rem;
            color: #6B7280;
        }
        .footer-grid {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-col h4 {
            color: #CBD5E1;
            margin-bottom: 10px;
            font-size: 0.88rem;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: #6B7280;
            text-decoration: none;
            margin-bottom: 5px;
            transition: var(--transition-fast);
            font-size: 0.8rem;
        }
        .footer-col a:hover {
            color: var(--accent-400);
        }
        .footer-bottom {
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.03);
            padding-top: 18px;
            font-size: 0.76rem;
            color: #4B5563;
        }

        @media (max-width: 900px) {
            .hero-faq h1 {
                font-size: 2.2rem;
            }
            .nav-links {
                gap: 18px;
                margin-top: 8px;
                width: 100%;
                justify-content: center;
            }
            nav {
                flex-direction: column;
            }
        }
        @media (max-width: 500px) {
            .container {
                padding: 0 14px;
            }
            .hero-faq h1 {
                font-size: 1.8rem;
            }
            .fix-flow {
                flex-direction: column;
                align-items: center;
            }
            .fix-step {
                max-width: 100%;
            }
        }