:root {
            --primary: #a668d9;
            --primary-dark: #8744be;
            --primary-light: #cfa8ee;
            --accent: #6f30a0;
            --bg-dark: #0f0b16;
            --bg-surface: #191224;
            --bg-card: #231a32;
            --bg-glass: rgba(35, 26, 50, 0.7);
            --border: rgba(166, 104, 217, 0.2);
            --border-hover: rgba(166, 104, 217, 0.5);
            --text-main: #f3ecf9;
            --text-sub: #b7a8ca;
            --text-muted: #837298;
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --radius: 9px;
            --transition: 0.35s ease;
        }

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

        body {
            background-color: var(--bg-dark);
            color: var(--text-main);
            font-family: var(--font);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: break-word;
            overflow-wrap: break-word;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        /* 布局容器规范 */
        .hangar {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .canopy {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            min-width: 0;
        }

        /* 顶部导航层 */
        .seal {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(15, 11, 22, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
        }

        .beak {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .beak img {
            height: 38px;
            width: auto;
            display: block;
        }

        .airway {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }

        .apex {
            padding: 8px 16px;
            border-radius: var(--radius);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            transition: all var(--transition);
        }

        .apex:hover {
            color: var(--text-main);
            background: rgba(166, 104, 217, 0.12);
        }

        .apex.active {
            color: #ffffff;
            background: var(--accent);
            box-shadow: 0 4px 14px rgba(111, 48, 160, 0.4);
        }

        /* 按钮与交互触发件 */
        .thrust {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: #ffffff;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius);
            box-shadow: 0 4px 20px rgba(166, 104, 217, 0.35);
            transition: transform var(--transition), box-shadow var(--transition);
            border: none;
            cursor: pointer;
        }

        .thrust:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(166, 104, 217, 0.5);
        }

        .flick {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            background: rgba(166, 104, 217, 0.1);
            color: var(--primary-light);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            font-weight: 500;
            font-size: 15px;
            transition: all var(--transition);
        }

        .flick:hover {
            background: rgba(166, 104, 217, 0.2);
            border-color: var(--primary);
            color: #ffffff;
        }

        /* 主体骨架 */
        .airspace {
            padding: 40px 0 80px 0;
        }

        /* 1. Hero 密码学去中心化防御体系 (<section>) */
        .apogee {
            padding: 60px 0;
            position: relative;
        }

        .apogee-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
        }

        .apogee-core {
            flex: 1 1 500px;
            min-width: 0;
        }

        .apogee-visual {
            flex: 1 1 450px;
            min-width: 0;
            position: relative;
        }

        .streak-hangar {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            line-height: 1.25;
            color: #ffffff;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
            white-space: normal;
        }

        .streak-hangar span {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .flock-lead {
            font-size: 17px;
            color: var(--text-sub);
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .ply-features {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 36px;
        }

        .leaflet {
            flex: 1 1 200px;
            min-width: 0;
            background: var(--bg-card);
            border: 1px solid var(--border);
            padding: 20px;
            border-radius: var(--radius);
            transition: border-color var(--transition);
        }

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

        .feather {
            width: 32px;
            height: 32px;
            color: var(--primary);
            margin-bottom: 12px;
            display: block;
        }

        .streak-sub {
            font-size: 16px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 8px;
        }

        .flock-sm {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .beacon-wrap {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
            background: var(--bg-surface);
        }

        .beacon {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }

        /* 2. 端到端加密与密钥协商数据面板 (<article>) */
        .launch {
            padding: 80px 0;
            background: linear-gradient(180deg, rgba(15, 11, 22, 0) 0%, var(--bg-surface) 50%, rgba(15, 11, 22, 0) 100%);
            border-top: 1px solid rgba(166, 104, 217, 0.1);
            border-bottom: 1px solid rgba(166, 104, 217, 0.1);
        }

        .streak-sec {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            color: #ffffff;
            text-align: center;
            margin-bottom: 16px;
        }

        .flock-desc {
            font-size: 16px;
            color: var(--text-sub);
            text-align: center;
            max-width: 760px;
            margin: 0 auto 48px auto;
        }

        /* Data UI 数据展现结构面板 */
        .script-glider {
            background: var(--bg-dark);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
        }

        .dart-seal {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 16px;
            margin-bottom: 24px;
            border-bottom: 1px solid var(--border);
            gap: 12px;
        }

        .stream-tag {
            font-family: monospace;
            font-size: 13px;
            padding: 4px 12px;
            border-radius: 4px;
            background: rgba(166, 104, 217, 0.15);
            color: var(--primary-light);
            border: 1px solid rgba(166, 104, 217, 0.3);
        }

        .ply-flow {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-bottom: 32px;
        }

        .glider-step {
            flex: 1 1 280px;
            min-width: 0;
            background: var(--bg-card);
            padding: 24px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            position: relative;
        }

        .step-num {
            font-family: monospace;
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            display: block;
        }

        .code-block {
            background: rgba(0, 0, 0, 0.5);
            padding: 12px;
            border-radius: 6px;
            font-family: monospace;
            font-size: 12px;
            color: #d1c2e4;
            margin-top: 12px;
            word-break: break-all;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        /* 3. 个人隐私控制面板 (<div>) */
        .strato {
            padding: 80px 0;
        }

        .glider-board {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-top: 40px;
        }

        .crease-setting {
            flex: 1 1 340px;
            min-width: 0;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: transform var(--transition), border-color var(--transition);
        }

        .crease-setting:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
        }

        .setting-seal {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 16px;
        }

        .setting-status {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 24px;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .status-pill {
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 20px;
            background: rgba(46, 204, 113, 0.15);
            color: #2ecc71;
            border: 1px solid rgba(46, 204, 113, 0.3);
        }

        /* 4. 账号防封禁规范指南 (<aside>) */
        .landing {
            padding: 80px 0;
            background: var(--bg-surface);
            border-radius: calc(var(--radius) * 2);
            margin: 40px 0 80px 0;
            border: 1px solid var(--border);
        }

        .faq-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 40px;
        }

        .faq-stream {
            flex: 1 1 500px;
            min-width: 0;
            background: var(--bg-dark);
            padding: 24px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }

        .faq-q {
            font-size: 17px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-a {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* 页脚区域 */
        .tarmac {
            background: #09060e;
            border-top: 1px solid var(--border);
            padding: 60px 0 30px 0;
        }

        .vista-top {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
            margin-bottom: 40px;
        }

        .brand-col {
            flex: 1 1 300px;
            min-width: 0;
        }

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .links-col {
            flex: 1 1 200px;
            min-width: 0;
        }

        .apex-rudder {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .apex-rudder a {
            color: var(--text-muted);
            font-size: 14px;
            transition: color var(--transition);
        }

        .apex-rudder a:hover {
            color: var(--primary-light);
        }

        .vista-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .canopy {
                flex-direction: column;
                gap: 16px;
            }
            .airway {
                width: 100%;
                justify-content: center;
            }
            .apogee-grid {
                flex-direction: column;
            }
            .script-glider {
                padding: 20px;
            }
            .crease-setting {
                flex: 1 1 100%;
            }
            .faq-stream {
                flex: 1 1 100%;
            }
        }