:root {
            --bg-deep: #05070e;
            --surface-card: #0e1322;
            --surface-hover: #151d33;
            --border-glow: rgba(124, 77, 255, 0.25);
            --accent-purple: #7c4dff;
            --accent-pink: #ff4081;
            --accent-cyan: #00e5ff;
            --accent-emerald: #00e676;
            --accent-amber: #ffab00;
            --text-primary: #f8fafc;
            --text-secondary: #94a3b8;
            --gradient-aurora: linear-gradient(135deg, #7c4dff 0%, #ff4081 50%, #00e5ff 100%);
            --gradient-ai: linear-gradient(135deg, #00e5ff 0%, #7c4dff 50%, #00e676 100%);
            --gradient-dark-card: linear-gradient(180deg, rgba(21, 29, 51, 0.6) 0%, rgba(14, 19, 34, 0.8) 100%);
            --glow-purple: 0 0 24px rgba(124, 77, 255, 0.4);
            --glow-cyan: 0 0 24px rgba(0, 229, 255, 0.4);
            --glow-pink: 0 0 24px rgba(255, 64, 129, 0.4);
            --glow-emerald: 0 0 24px rgba(0, 230, 118, 0.4);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'PingFang SC', 'Helvetica Neue', 'Microsoft YaHei', sans-serif;
        }

        body {
            background-color: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            background-image:
                radial-gradient(circle at 15% 20%, rgba(124, 77, 255, 0.12) 0%, transparent 45%),
                radial-gradient(circle at 85% 60%, rgba(255, 40, 129, 0.1) 0%, transparent 45%),
                radial-gradient(circle at 50% 80%, rgba(0, 229, 255, 0.06) 0%, transparent 50%);
            background-attachment: fixed;
        }

        /* Header 与导航栏（与首页一致） */
        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 6%;
            position: sticky;
            top: 0;
            background: rgba(5, 7, 14, 0.85);
            backdrop-filter: blur(16px);
            z-index: 100;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 24px;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: var(--gradient-aurora);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--gradient-aurora);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #05070e;
            font-weight: 900;
            font-size: 18px;
            -webkit-text-fill-color: initial;
            flex-shrink: 0;
        }

        nav ul {
            display: flex;
            list-style: none;
            gap: 32px;
        }

        nav a {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.3s ease;
            position: relative;
        }

        nav a:hover,
        nav a.active {
            color: var(--text-primary);
            text-shadow: 0 0 12px rgba(124, 77, 255, 0.6);
        }

        nav a.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
        }

        .nav-btn {
            background: var(--gradient-aurora);
            color: #ffffff;
            padding: 10px 24px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 700;
            text-decoration: none;
            box-shadow: 0 4px 20px rgba(124, 77, 255, 0.35);
            transition: transform 0.3s, box-shadow 0.3s;
            white-space: nowrap;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(255, 40, 129, 0.5);
        }

        /* Hero区域 */
        .guide-hero {
            padding: 70px 6% 30px;
            text-align: center;
            max-width: 1000px;
            margin: 0 auto;
        }

        .guide-hero h1 {
            font-size: 46px;
            font-weight: 900;
            margin-bottom: 16px;
            letter-spacing: -0.8px;
            background: var(--gradient-ai);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .guide-hero .hero-sub {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }

        .ai-detect-bar {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(0, 230, 118, 0.08);
            border: 1px solid rgba(0, 230, 118, 0.25);
            padding: 10px 22px;
            border-radius: 30px;
            font-size: 14px;
            color: var(--accent-emerald);
            animation: softPulse 2.5s ease-in-out infinite;
        }

        @keyframes softPulse {
            0%,
            100% {
                box-shadow: 0 0 8px rgba(0, 230, 118, 0.2);
            }
            50% {
                box-shadow: 0 0 18px rgba(0, 230, 118, 0.5);
            }
        }

        .ai-detect-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--accent-emerald);
            box-shadow: 0 0 10px var(--accent-emerald);
        }

        /* 快速入口卡片 */
        .quick-start-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            max-width: 1000px;
            margin: 40px auto 50px;
            padding: 0 6%;
        }

        .quick-card {
            background: var(--gradient-dark-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 18px;
            padding: 28px 22px;
            text-align: center;
            transition: all 0.35s;
            position: relative;
            overflow: hidden;
        }

        .quick-card:hover {
            transform: translateY(-8px);
            border-color: var(--accent-cyan);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
        }

        .quick-card .step-icon {
            font-size: 44px;
            margin-bottom: 18px;
            display: block;
        }

        .quick-card h3 {
            font-size: 20px;
            margin-bottom: 8px;
            font-weight: 700;
        }

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

        .quick-card .step-number {
            position: absolute;
            top: 12px;
            right: 14px;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: var(--gradient-aurora);
            color: #fff;
            font-weight: 800;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* 标签页系统选择器 */
        .platform-tabs-wrapper {
            max-width: 1000px;
            margin: 20px auto 0;
            padding: 0 6%;
        }

        .platform-tabs {
            display: flex;
            gap: 10px;
            margin-bottom: 30px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: 14px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--accent-purple) transparent;
        }

        .platform-tabs::-webkit-scrollbar {
            height: 4px;
        }
        .platform-tabs::-webkit-scrollbar-thumb {
            background: var(--accent-purple);
            border-radius: 4px;
        }

        .tab-btn {
            background: transparent;
            border: 1px solid transparent;
            color: var(--text-secondary);
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border-radius: 10px;
            transition: all 0.3s;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .tab-btn:hover {
            color: var(--text-primary);
            background: rgba(124, 77, 255, 0.08);
        }

        .tab-btn.active {
            color: var(--text-primary);
            background: rgba(124, 77, 255, 0.15);
            border-color: var(--border-glow);
            box-shadow: var(--glow-purple);
        }

        .tab-btn .tab-os-icon {
            font-size: 20px;
        }

        /* 教程内容区 */
        .guide-content-container {
            max-width: 1000px;
            margin: 0 auto 60px;
            padding: 0 6%;
        }

        .guide-content {
            background: var(--surface-card);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: 20px;
            padding: 40px;
            min-height: 500px;
            position: relative;
        }

        .tab-pane {
            display: none;
            opacity: 0;
            transition: opacity 0.25s ease;
        }

        .tab-pane.active {
            display: block;
            opacity: 1;
        }

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

        .guide-section:last-child {
            margin-bottom: 0;
        }

        .guide-section h2 {
            font-size: 24px;
            color: var(--accent-cyan);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
        }

        .instruction-steps {
            list-style: none;
            counter-reset: step-counter;
            padding: 0;
        }

        .instruction-steps li {
            counter-increment: step-counter;
            display: flex;
            gap: 16px;
            margin-bottom: 28px;
            position: relative;
        }

        .instruction-steps li::before {
            content: counter(step-counter);
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--gradient-aurora);
            color: #fff;
            font-weight: 800;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: 2px;
        }

        .step-content {
            flex: 1;
        }

        .step-content strong {
            display: block;
            color: var(--text-primary);
            font-size: 17px;
            margin-bottom: 6px;
        }

        .step-content p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
        }

        .ui-mock {
            background: #0a0f1c;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            padding: 14px 18px;
            margin-top: 10px;
            display: flex;
            align-items: center;
            gap: 12px;
            font-family: 'SF Mono', 'Consolas', monospace;
            font-size: 13px;
            color: var(--accent-cyan);
        }

        .ui-mock .mock-btn {
            padding: 6px 14px;
            background: var(--gradient-aurora);
            border-radius: 20px;
            color: #fff;
            font-weight: 700;
            font-size: 12px;
            margin-left: auto;
            white-space: nowrap;
        }

        .info-box,
        .warning-box {
            padding: 18px 20px;
            border-radius: 0 14px 14px 0;
            margin: 24px 0;
            font-size: 14px;
            line-height: 1.6;
            background: rgba(0, 229, 255, 0.04);
            border-left: 4px solid var(--accent-cyan);
            color: var(--text-secondary);
        }

        .warning-box {
            background: rgba(255, 64, 129, 0.04);
            border-left-color: var(--accent-pink);
        }

        /* 创意版块：AI智能排障助手 */
        .troubleshoot-section {
            max-width: 1000px;
            margin: 0 auto 70px;
            padding: 0 6%;
        }

        .section-title {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-title h2 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }

        .section-title h2 .highlight {
            background: var(--gradient-ai);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-title p {
            color: var(--text-secondary);
            font-size: 15px;
            margin-top: 8px;
        }

        .troubleshoot-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .trouble-card {
            background: var(--surface-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 16px;
            padding: 26px 24px;
            transition: all 0.3s;
            cursor: pointer;
        }

        .trouble-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
        }

        .trouble-card summary {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 16px;
            color: var(--text-primary);
            outline: none;
        }

        .trouble-card summary::-webkit-details-marker {
            display: none;
        }

        .trouble-card .qa-icon {
            font-size: 24px;
        }

        .trouble-card .answer {
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .trouble-card .answer strong {
            color: var(--text-primary);
        }

        /* 创意版块：交互式配置预览 */
        .config-showcase {
            max-width: 1000px;
            margin: 0 auto 70px;
            padding: 0 6%;
        }

        .config-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .config-card {
            background: var(--surface-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 16px;
            padding: 24px 20px;
            text-align: center;
            transition: 0.3s;
        }

        .config-card:hover {
            border-color: var(--accent-purple);
            transform: translateY(-5px);
            box-shadow: var(--glow-purple);
        }

        .config-card .config-icon {
            font-size: 32px;
            margin-bottom: 14px;
        }

        .config-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }

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

        /* Footer（与首页一致） */
        footer {
            background: #030408;
            padding: 60px 6% 30px;
            color: var(--text-secondary);
            font-size: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 50px;
        }

        .footer-brand h3 {
            color: var(--text-primary);
            font-size: 20px;
            margin-bottom: 16px;
        }

        .footer-brand p {
            line-height: 1.8;
            font-size: 13px;
        }

        .footer-col h4 {
            color: var(--text-primary);
            font-size: 16px;
            margin-bottom: 20px;
        }

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

        .footer-col li {
            margin-bottom: 12px;
        }

        .footer-col a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            flex-wrap: wrap;
            gap: 12px;
        }

        /* 响应式 */
        @media (max-width: 900px) {
            .quick-start-grid,
            .config-cards {
                grid-template-columns: 1fr;
            }
            .troubleshoot-grid {
                grid-template-columns: 1fr;
            }
            .guide-content {
                padding: 24px;
            }
            .footer-content {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            nav ul {
                display: none;
            }
            .guide-hero h1 {
                font-size: 32px;
            }
        }

        @media (max-width: 600px) {
            .instruction-steps li {
                flex-direction: column;
                gap: 8px;
            }
            .instruction-steps li::before {
                margin-bottom: 4px;
            }
            .platform-tabs {
                gap: 6px;
            }
            .tab-btn {
                padding: 10px 16px;
                font-size: 13px;
            }
        }