/* 全局样式与基础设定 */
        body {
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #fafaff;
            color: #2b3056;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        /* 统一的过渡效果与状态 */
        *, *::before, *::after {
            box-sizing: border-box;
            transition: all 0.25s ease;
        }

        /* 强制文本换行与溢出控制 */
        p, span, h1, h2, h3, h4, a {
            word-break: break-word;
            overflow-wrap: break-word;
        }

        /* 【强制】复用首页导航栏风格类名定义 */
        .helm {
            background-color: #ffffff;
            border-bottom: 1px solid rgba(89, 101, 234, 0.08);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(89, 101, 234, 0.03);
        }

        .flow {
            max-width: 1200px;
            margin: 0 auto;
            padding: 16px 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }

        .glyph {
            display: flex;
            align-items: center;
            text-decoration: none;
            font-weight: 800;
            font-size: 22px;
            color: #2b3056;
        }

        .glyph img {
            height: 32px;
            margin-right: 10px;
        }

        .glyph span {
            font-weight: 800;
            letter-spacing: -0.5px;
        }

        .array {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .wire {
            text-decoration: none;
            color: #6c7293;
            padding: 8px 16px;
            font-weight: 600;
            border-radius: 18px;
            font-size: 15px;
        }

        .wire:hover, 
        .wire.active {
            color: #5965ea;
            background-color: rgba(89, 101, 234, 0.06);
        }

        /* 主容器 */
        .hull {
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 24px 80px 24px;
        }

        /* 1. 捍卫您的对话隐私 - Hero 展示区 */
        .pulse {
            background: linear-gradient(135deg, #ffffff 0%, #f5f6fe 100%);
            border-radius: 23px;
            padding: 60px 48px;
            margin-bottom: 40px;
            box-shadow: 0 10px 30px rgba(89, 101, 234, 0.05), 0 1px 3px rgba(0, 0, 0, 0.02);
            border: 1px solid rgba(89, 101, 234, 0.05);
        }

        .pulse .mesh {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 40px;
        }

        .pulse .node {
            flex: 1;
            min-width: 300px;
        }

        /* 标题与文本系统 */
        .apex {
            color: #1e223b;
            margin-top: 0;
            margin-bottom: 16px;
            white-space: normal;
        }

        h1.apex {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.5px;
            color: #2b3056;
        }

        h2.apex {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 20px;
        }

        h3.apex {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        h4.apex {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: #2b3056;
        }

        .yarn {
            color: #6c7293;
            font-size: 16px;
            line-height: 1.7;
            margin-top: 0;
            margin-bottom: 24px;
        }

        /* 按钮与行动点 */
        .spark {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 20px;
            font-weight: 600;
            background-color: #5965ea;
            color: #ffffff;
            text-decoration: none;
            box-shadow: 0 4px 15px rgba(89, 101, 234, 0.3);
            border: 1px solid transparent;
            cursor: pointer;
            text-align: center;
        }

        .spark:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(89, 101, 234, 0.4);
        }

        .spark.wire {
            background-color: transparent;
            color: #5965ea;
            border: 1px solid rgba(89, 101, 234, 0.3);
            box-shadow: none;
            margin-left: 12px;
        }

        .spark.wire:hover {
            background-color: rgba(89, 101, 234, 0.05);
            border-color: #5965ea;
        }

        /* 状态点与小徽章 */
        .ping {
            display: inline-block;
            padding: 6px 14px;
            background-color: rgba(89, 101, 234, 0.08);
            color: #5965ea;
            border-radius: 12px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        /* 矢量图标容器 */
        .blip {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background-color: rgba(89, 101, 234, 0.08);
            color: #5965ea;
            margin-bottom: 20px;
        }

        /* 2. 无懈可击的端到端加密 - 卡片面板 */
        .matrix {
            background-color: #ffffff;
            border-radius: 23px;
            padding: 48px;
            box-shadow: 0 10px 30px rgba(89, 101, 234, 0.04), 0 1px 3px rgba(0, 0, 0, 0.01);
            border: 1px solid rgba(89, 101, 234, 0.05);
            margin-bottom: 40px;
        }

        .mesh {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        /* 密钥传输图表 */
        #e2ee .mesh {
            align-items: center;
            justify-content: space-between;
            background-color: #fafaff;
            padding: 32px;
            border-radius: 20px;
            margin-bottom: 40px;
            border: 1px dashed rgba(89, 101, 234, 0.15);
        }

        #e2ee .mesh .node {
            flex: 1;
            min-width: 200px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        #e2ee .mesh .node.flow {
            flex: 0 0 auto;
            min-width: auto;
        }

        /* 特性细分卡片群 */
        .flock {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 30px;
        }

        .cell {
            flex: 1;
            min-width: 280px;
            background-color: #fafaff;
            padding: 28px;
            border-radius: 20px;
            border: 1px solid rgba(89, 101, 234, 0.04);
        }

        .cell:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(89, 101, 234, 0.06);
            border-color: rgba(89, 101, 234, 0.15);
        }

        /* 3. 内置 OTR 会话支持 - 容器组件 */
        .zone {
            background: linear-gradient(135deg, #ffffff 0%, #f6f7ff 100%);
            border-radius: 23px;
            padding: 48px;
            margin-bottom: 40px;
            border: 1px solid rgba(89, 101, 234, 0.05);
            box-shadow: 0 10px 30px rgba(89, 101, 234, 0.04);
        }

        .zone .mesh {
            align-items: center;
            gap: 40px;
        }

        .zone .node {
            flex: 1;
            min-width: 320px;
        }

        /* 分层条款结构 */
        .drop {
            display: flex;
            gap: 16px;
            margin-bottom: 24px;
        }

        .drop .blip {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            flex-shrink: 0;
            margin-bottom: 0;
        }

        /* 页脚区域 */
        .tail {
            background-color: #ffffff;
            border-top: 1px solid rgba(89, 101, 234, 0.08);
            padding: 60px 0 30px 0;
            margin-top: 40px;
        }

        .tail .flow {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: space-between;
        }

        .tail .node {
            flex: 1;
            min-width: 200px;
        }

        .trail {
            text-decoration: none;
            color: #6c7293;
            font-size: 14px;
        }

        .trail:hover {
            color: #5965ea;
            padding-left: 4px;
        }

        .base {
            background-color: transparent;
        }

        /* 响应式断点 */
        @media (max-width: 768px) {
            .flow {
                padding: 16px;
            }
            .array {
                width: 100%;
                margin-top: 12px;
                justify-content: center;
            }
            .pulse {
                padding: 32px 20px;
            }
            h1.apex {
                font-size: 32px;
            }
            .spark.wire {
                margin-left: 0;
                margin-top: 12px;
            }
            #e2ee .mesh {
                flex-direction: column;
                gap: 20px;
            }
            #e2ee .mesh .node.flow {
                transform: rotate(90deg);
                margin: 10px 0;
            }
            .matrix {
                padding: 24px 20px;
            }
            .zone {
                padding: 24px 20px;
            }
            .tail .flow {
                flex-direction: column;
                gap: 30px;
            }
        }

.nexus-helm{
            width: 100%;
            background-color: rgba(250, 250, 255, 0.9);
            backdrop-filter: blur(12px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(89, 101, 234, 0.08);
            transition: all 0.25s ease;
        }

.nexus-helm .nexus-flow{
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            max-width: 1300px;
            margin: 0 auto;
        }

.nexus-helm .nexus-glyph{
            display: flex;
            align-items: center;
            text-decoration: none;
            font-weight: 800;
            font-size: 24px;
            color: #5965ea;
            letter-spacing: -0.5px;
            transition: all 0.25s ease;
        }

.nexus-helm .nexus-glyph img{
            height: 32px;
            width: auto;
            margin-right: 8px;
        }

.nexus-helm .nexus-array{
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
        }

.nexus-helm .nexus-wire{
            text-decoration: none;
            color: #5d6382;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 17px;
            transition: all 0.25s ease;
            word-break: break-word;
            overflow-wrap: break-word;
        }

.nexus-helm .nexus-wire:hover{
            color: #5965ea;
            background-color: rgba(89, 101, 234, 0.05);
        }

.nexus-helm .nexus-array .nexus-wire[href="index.html"]{
            color: #ffffff;
            background-color: #5965ea;
            box-shadow: 0 4px 12px rgba(89, 101, 234, 0.2);
        }

@media (max-width: 768px){.nexus-helm .nexus-flow{
                flex-direction: column;
                gap: 16px;
            }

.nexus-helm .nexus-array{
                justify-content: center;
                width: 100%;
            }

.nexus-helm .nexus-wire{
                padding: 6px 12px;
                font-size: 14px;
            }}

.nexus-helm {
    background: rgb(250, 250, 255);
    background-image: none;
}

.echo-base {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.7;
    color: #2b3056;
}
.echo-base,
.echo-base *,
.echo-base *::before,
.echo-base *::after {
    box-sizing: border-box;
}

.echo-base [role="navigation"],
.echo-base div,
.echo-base section,
.echo-base article,
.echo-base aside,
.echo-base p,
.echo-base h1,
.echo-base h2,
.echo-base h3,
.echo-base h4,
.echo-base h5,
.echo-base h6,
.echo-base a {
    margin: 0;
    padding: 0;
    font: inherit;
    color: inherit;
    letter-spacing: inherit;
    line-height: inherit;
}

.echo-base p,
.echo-base h1,
.echo-base h2,
.echo-base h3,
.echo-base h4,
.echo-base h5,
.echo-base h6 {
    text-decoration: none;
}

.echo-base img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 0;
}

.echo-base {
    box-shadow: none;
    filter: none;
    text-shadow: none;
    background-image: none;
    border-top: none;
    border-left: none;
    border-right: none;
    outline: none;
}

.echo-base a,
.echo-base a:hover,
.echo-base a:focus,
.echo-base a:active {
    background: transparent;
    box-shadow: none;
    outline: none;
    text-decoration: none;
}

.echo-base .echo-hull{
            width: 100%;
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
        }

.echo-base{
            background-color: #0f1124;
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 32px 0;
            margin-top: 80px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

.echo-base .echo-echo{
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
            margin-bottom: 48px;
        }

.echo-base .echo-brand-column{
            flex: 1;
            min-width: 260px;
        }

.echo-base .echo-brand-name{
            font-size: 22px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 16px;
        }

.echo-base .echo-brand-desc{
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            max-width: 320px;
            line-height: 1.6;
        }

.echo-base .echo-links-column{
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
        }

.echo-base .echo-links-flock{
            min-width: 140px;
        }

.echo-base .echo-flock-apex{
            font-size: 14px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

.echo-base .echo-links-array{
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

.echo-base .echo-links-array a{
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.25s ease;
        }

.echo-base .echo-links-array a:hover{
            color: #5965ea;
        }

.echo-base .echo-trail{
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 32px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

@media (max-width: 768px){.echo-base .echo-echo{
                flex-direction: column;
                gap: 32px;
            }

.echo-base .echo-links-column{
                gap: 24px;
            }}