*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #0a1628;
            --secondary: #1a2a4a;
            --accent: #00e5ff;
            --accent-dim: rgba(0, 229, 255, 0.12);
            --text-primary: #f0f6ff;
            --text-secondary: #b0c8e8;
            --glass-bg: rgba(10, 22, 40, 0.75);
            --border-glow: rgba(0, 229, 255, 0.25);
            --radius: 20px;
            --shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #66f0ff;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .orb {
            position: fixed;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle at 30% 30%, rgba(0, 229, 255, 0.06), transparent 70%);
            pointer-events: none;
            z-index: 0;
            top: -200px;
            right: -200px;
        }
        .orb-2 {
            position: fixed;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle at 70% 70%, rgba(0, 229, 255, 0.04), transparent 70%);
            pointer-events: none;
            z-index: 0;
            bottom: -150px;
            left: -150px;
        }
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 22, 40, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 229, 255, 0.08);
            padding: 14px 0;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.4rem;
            letter-spacing: -0.5px;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent), #0088cc);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--primary);
        }
        .logo span {
            color: var(--accent);
        }
        .logo-version {
            font-size: 0.7rem;
            background: var(--accent-dim);
            border: 1px solid rgba(0, 229, 255, 0.2);
            padding: 2px 10px;
            border-radius: 40px;
            color: var(--accent);
            font-weight: 500;
            letter-spacing: 0.3px;
            margin-left: 4px;
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: wrap;
        }
        .nav a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 4px 0;
            transition: color 0.2s;
        }
        .nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.25s;
        }
        .nav a:hover {
            color: #fff;
        }
        .nav a:hover::after {
            width: 100%;
        }
        .nav a.active {
            color: #fff;
        }
        .nav a.active::after {
            width: 100%;
        }
        .nav-badge {
            background: var(--accent-dim);
            border: 1px solid rgba(0, 229, 255, 0.15);
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.7rem;
            color: var(--accent);
            font-weight: 600;
            letter-spacing: 0.4px;
            text-transform: uppercase;
        }
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
        }
        .mobile-toggle span {
            width: 26px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: 0.3s;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            z-index: 1;
            padding: 50px 0 30px;
            border-bottom: 1px solid rgba(0, 229, 255, 0.05);
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 8px;
        }
        .page-hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent), #66f0ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 680px;
        }
        .page-hero .meta-badge {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 14px;
        }
        .page-hero .meta-badge span {
            background: var(--glass-bg);
            border: 1px solid rgba(0, 229, 255, 0.08);
            padding: 4px 18px;
            border-radius: 40px;
            font-size: 0.8rem;
            color: var(--text-secondary);
        }
        .page-hero .meta-badge strong {
            color: var(--accent);
        }

        /* ===== Search Bar (装饰) ===== */
        .search-bar {
            position: relative;
            z-index: 1;
            padding: 30px 0 10px;
        }
        .search-container {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            background: rgba(10, 22, 40, 0.6);
            border: 1px solid rgba(0, 229, 255, 0.1);
            border-radius: 60px;
            padding: 8px 8px 8px 22px;
            backdrop-filter: blur(4px);
            transition: border-color 0.3s;
        }
        .search-container:focus-within {
            border-color: rgba(0, 229, 255, 0.3);
        }
        .search-container input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-primary);
            font-family: var(--font);
            font-size: 1rem;
            padding: 10px 0;
        }
        .search-container input::placeholder {
            color: rgba(255,255,255,0.3);
        }
        .search-container button {
            background: var(--accent);
            color: var(--primary);
            border: none;
            padding: 10px 28px;
            border-radius: 60px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            font-family: var(--font);
            transition: background 0.25s;
        }
        .search-container button:hover {
            background: #33ebff;
        }

        /* ===== 知识库分类导航 ===== */
        .kb-nav {
            position: relative;
            z-index: 1;
            padding: 40px 0 30px;
            border-bottom: 1px solid rgba(0, 229, 255, 0.05);
        }
        .section-label {
            display: inline-block;
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--accent);
            background: var(--accent-dim);
            padding: 4px 18px;
            border-radius: 40px;
            border: 1px solid rgba(0, 229, 255, 0.08);
            margin-bottom: 14px;
            font-weight: 600;
        }
        .section-title {
            font-size: 2.6rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .section-title .highlight {
            background: linear-gradient(135deg, var(--accent), #66f0ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-desc {
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 680px;
            margin-bottom: 40px;
        }
        .kb-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: 28px;
        }
        .kb-card {
            background: rgba(10, 22, 40, 0.5);
            border: 1px solid rgba(0, 229, 255, 0.06);
            border-radius: 16px;
            padding: 26px 20px;
            text-align: center;
            transition: 0.3s;
            cursor: pointer;
        }
        .kb-card:hover {
            border-color: rgba(0, 229, 255, 0.15);
            transform: translateY(-4px);
        }
        .kb-card .kb-icon {
            font-size: 2.5rem;
            display: block;
            margin-bottom: 10px;
        }
        .kb-card h4 {
            font-weight: 600;
            font-size: 1.1rem;
            margin-bottom: 4px;
        }
        .kb-card p {
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        /* ===== FAQ 深度解析 ===== */
        .faq-section {
            position: relative;
            z-index: 1;
            padding: 50px 0;
            border-bottom: 1px solid rgba(0, 229, 255, 0.05);
        }
        .faq-category {
            margin-bottom: 40px;
        }
        .faq-category h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .faq-item {
            background: rgba(10, 22, 40, 0.5);
            border: 1px solid rgba(0, 229, 255, 0.06);
            border-radius: 12px;
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: 0.3s;
        }
        .faq-item:hover {
            border-color: rgba(0, 229, 255, 0.12);
        }
        .faq-item .faq-question {
            font-weight: 600;
            font-size: 1.05rem;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .faq-item .faq-answer {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        /* ===== 2026专家建议 ===== */
        .expert-tips {
            position: relative;
            z-index: 1;
            padding: 50px 0;
            border-bottom: 1px solid rgba(0, 229, 255, 0.05);
            background: rgba(0, 0, 0, 0.2);
        }
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
            margin-top: 28px;
        }
        .tip-card {
            background: rgba(10, 22, 40, 0.6);
            border: 1px solid rgba(0, 229, 255, 0.06);
            border-radius: 16px;
            padding: 24px;
            transition: 0.3s;
        }
        .tip-card:hover {
            border-color: rgba(0, 229, 255, 0.15);
        }
        .tip-card .tip-icon {
            font-size: 2rem;
            display: block;
            margin-bottom: 10px;
        }
        .tip-card h4 {
            font-weight: 600;
            font-size: 1.05rem;
            margin-bottom: 4px;
        }
        .tip-card p {
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        /* ===== 自助服务中心 ===== */
        .self-service {
            position: relative;
            z-index: 1;
            padding: 50px 0;
            border-bottom: 1px solid rgba(0, 229, 255, 0.05);
        }
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: 28px;
        }
        .service-card {
            background: rgba(10, 22, 40, 0.5);
            border: 1px solid rgba(0, 229, 255, 0.06);
            border-radius: 16px;
            padding: 26px 20px;
            text-align: center;
            transition: 0.3s;
        }
        .service-card:hover {
            border-color: rgba(0, 229, 255, 0.15);
        }
        .service-card .service-icon {
            font-size: 2.2rem;
            display: block;
            margin-bottom: 10px;
        }
        .service-card h4 {
            font-weight: 600;
            font-size: 1.05rem;
            margin-bottom: 4px;
        }
        .service-card p {
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        /* ===== 节点更新公告 ===== */
        .announcements {
            position: relative;
            z-index: 1;
            padding: 50px 0 60px;
            border-bottom: 1px solid rgba(0, 229, 255, 0.05);
        }
        .announce-list {
            margin-top: 24px;
        }
        .announce-item {
            background: rgba(10, 22, 40, 0.5);
            border: 1px solid rgba(0, 229, 255, 0.06);
            border-radius: 12px;
            padding: 18px 24px;
            margin-bottom: 12px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: 0.3s;
        }
        .announce-item:hover {
            border-color: rgba(0, 229, 255, 0.12);
        }
        .announce-date {
            min-width: 80px;
            font-weight: 700;
            color: var(--accent);
            font-size: 0.9rem;
        }
        .announce-title {
            font-weight: 600;
            font-size: 1rem;
        }
        .announce-excerpt {
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        .footer {
            position: relative;
            z-index: 1;
            border-top: 1px solid rgba(0, 229, 255, 0.06);
            padding: 40px 0 32px;
            background: rgba(0, 0, 0, 0.3);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 30px;
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            max-width: 360px;
            margin-top: 8px;
        }
        .footer-brand .entity {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.25);
            margin-top: 12px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-col h5 {
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 0.85rem;
            transition: 0.2s;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(0, 229, 255, 0.05);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.25);
        }
        .footer-bottom .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .footer-bottom .meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .footer-bottom .meta strong {
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: flex;
            }
            .nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 16px 0 8px;
                border-top: 1px solid rgba(0, 229, 255, 0.06);
                margin-top: 8px;
            }
            .nav.open {
                display: flex;
            }
            .nav a {
                font-size: 1rem;
            }
            .nav-badge {
                align-self: flex-start;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                align-items: flex-start;
            }
            .search-container {
                flex-direction: column;
                align-items: stretch;
                padding: 12px;
                gap: 8px;
            }
            .search-container input {
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo-version {
                font-size: 0.6rem;
                padding: 1px 8px;
            }
            .kb-grid,
            .tips-grid,
            .service-grid {
                grid-template-columns: 1fr;
            }
            .announce-item {
                flex-direction: column;
            }
        }