:root {
            --primary: #da1e2e;
            --primary-glow: rgba(218, 30, 46, 0.4);
            --bg-dark: #0a0a0a;
            --bg-deep: #050505;
            --surface: #141414;
            --text-main: #f5f5f5;
            --text-dim: #a0a0a0;
            --radius: 20px;
            --transition: 0.25s ease;
        }

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

        body {
            background-color: var(--bg-dark);
            color: var(--text-main);
            font-family: "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
            line-height: 1.7;
            overflow-x: hidden;
        }

        /* 导航栏复用 */
        .apex {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 10, 10, 0.8);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .orbit-vault {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

        .orbit-ribbon {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }

        .glyph img {
            height: 32px;
            display: block;
        }

        .spool {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }

        .node {
            color: var(--text-dim);
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
        }

        .node:hover, .node.active {
            color: var(--primary);
        }

        .orbit-pip {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .snap {
            display: inline-block;
            text-decoration: none;
            padding: 10px 24px;
            background-color: var(--primary);
            color: white;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 15px var(--primary-glow);
            border: none;
            cursor: pointer;
        }

        .snap:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px var(--primary-glow);
        }

        /* 主容器 */
        .prime-vault {
            padding-top: 72px;
        }

        /* Hero区变体 - Diagonal Split */
        .zenith-veil {
            min-height: 90vh;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            background-color: var(--bg-deep);
        }

        .zenith-veil::after {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: linear-gradient(135deg, rgba(218, 30, 46, 0.1) 0%, transparent 100%);
            clip-path: polygon(20% 0, 100% 0, 100% 100%, 0% 100%);
            z-index: 1;
        }

        .vista-sphere {
            max-width: 1200px;
            margin: 0 auto;
            padding: 60px 24px;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
            z-index: 2;
            flex-wrap: wrap;
        }

        .zenith-clump {
            flex: 1;
            min-width: 320px;
            max-width: 600px;
        }

        .zenith-crest {
            font-size: clamp(36px, 5vw, 64px);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            word-break: keep-all;
        }

        .zenith-crest span {
            color: var(--primary);
        }

        .zenith-lint {
            font-size: 20px;
            color: var(--text-dim);
            margin-bottom: 40px;
            max-width: 500px;
        }

        /* 多人协作演示区 */
        .collab-article {
            background-color: var(--bg-dark);
            padding: 100px 24px;
        }

        .collab-casing {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 60px;
        }

        .collab-crest-box {
            text-align: center;
        }

        .collab-crest {
            font-size: 42px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .collab-lint {
            color: var(--text-dim);
            font-size: 18px;
            max-width: 700px;
            margin: 0 auto;
        }

        .folio-stage {
            background: var(--surface);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: var(--radius);
            padding: 40px;
            position: relative;
            min-height: 400px;
            overflow: hidden;
            display: flex;
            flex-wrap: wrap;
        }

        .ui-doc {
            flex: 1;
            min-width: 300px;
            background: #fff;
            border-radius: 8px;
            padding: 40px;
            color: #333;
            position: relative;
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }

        .ui-line {
            height: 12px;
            background: #eee;
            margin-bottom: 15px;
            border-radius: 4px;
        }

        .ui-line.short { width: 60%; }
        .ui-line.mid { width: 85%; }

        .cursor {
            position: absolute;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            pointer-events: none;
            transition: all 0.5s ease;
        }

        .cursor-pica {
            width: 2px;
            height: 20px;
            background: var(--primary);
            animation: blink 1s infinite;
        }

        .cursor-seam {
            padding: 2px 8px;
            background: var(--primary);
            color: white;
            font-size: 12px;
            border-radius: 4px;
            margin-top: 2px;
            white-space: nowrap;
        }

        @keyframes blink {
            50% { opacity: 0; }
        }

        /* 多端同步逻辑区 */
        .sync-sphere {
            background-color: var(--bg-deep);
            padding: 100px 24px;
        }

        .sync-vault {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 80px;
            flex-wrap: wrap;
        }

        .sync-shale {
            flex: 1;
            min-width: 300px;
        }

        .sync-pica-clump {
            flex: 1;
            min-width: 300px;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 30px;
            flex-wrap: wrap;
        }

        .device-folio {
            background: var(--surface);
            padding: 30px;
            border-radius: var(--radius);
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: var(--transition);
            width: 180px;
        }

        .device-folio:hover {
            border-color: var(--primary);
            transform: translateY(-10px);
        }

        .device-pica {
            width: 48px;
            height: 48px;
            fill: var(--primary);
            margin-bottom: 20px;
        }

        /* 安全保障区 */
        .safety-aside {
            padding: 100px 24px;
            background-color: var(--bg-dark);
        }

        .safety-vault {
            max-width: 1200px;
            margin: 0 auto;
        }

        .safety-clump {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            margin-top: 60px;
        }

        .safety-folio {
            background: var(--surface);
            padding: 48px;
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: var(--transition);
        }

        .safety-folio:hover {
            background: #1a1a1a;
            box-shadow: 0 20px 40px rgba(0,0,0,0.4);
        }

        .safety-pica {
            width: 56px;
            height: 56px;
            margin-bottom: 32px;
            background: rgba(218, 30, 46, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
        }

        .safety-crest {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .safety-lint {
            color: var(--text-dim);
            font-size: 16px;
        }

        /* 页脚 */
        .stem-echo {
            background-color: var(--bg-deep);
            padding: 80px 24px 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .echo-vault {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 60px;
        }

        .echo-clump {
            min-width: 200px;
        }

        .echo-crest {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 24px;
            color: var(--text-main);
        }

        .echo-node {
            display: block;
            color: var(--text-dim);
            text-decoration: none;
            margin-bottom: 12px;
            font-size: 14px;
            transition: var(--transition);
        }

        .echo-node:hover {
            color: var(--primary);
        }

        .bedrock {
            max-width: 1200px;
            margin: 60px auto 0;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            color: var(--text-dim);
            font-size: 13px;
            flex-wrap: wrap;
            gap: 20px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .orbit-vault {
                height: auto;
                padding: 15px 24px;
            }
            .orbit-ribbon {
                gap: 20px;
                width: 100%;
                justify-content: space-between;
            }
            .spool {
                display: none; /* 移动端简化 */
            }
            .zenith-veil {
                padding-top: 80px;
            }
            .zenith-veil::after {
                width: 100%;
                clip-path: none;
                opacity: 0.2;
            }
            .collab-crest {
                font-size: 32px;
            }
            .safety-clump {
                grid-template-columns: 1fr;
            }
        }

.nexus-apex{
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            padding: 20px 0;
        }

.nexus-apex .nexus-orbit-vault{
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 40px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

.nexus-apex .nexus-orbit-ribbon{
            background: rgba(20, 20, 20, 0.85);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 50px;
            padding: 8px 32px;
            display: flex;
            align-items: center;
            gap: 40px;
        }

.nexus-apex .nexus-glyph{
            height: 32px;
            display: flex;
            align-items: center;
        }

.nexus-apex .nexus-glyph img{
            height: 100%;
            width: auto;
        }

.nexus-apex .nexus-spool{
            display: flex;
            gap: 28px;
            list-style: none;
        }

.nexus-apex .nexus-node{
            color: #a0a0a0;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: 0.25s ease;
        }

.nexus-apex .nexus-node:hover, .nexus-apex .nexus-node.active{
            color: #da1e2e;
        }

.nexus-apex .nexus-snap{
            display: inline-flex;
            align-items: center;
            padding: 16px 36px;
            background-color: #da1e2e;
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 17px;
            transition: 0.25s ease;
            box-shadow: 0 10px 30px rgba(218, 30, 46, 0.4);
        }

.nexus-apex .nexus-snap:hover{
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(218, 30, 46, 0.4);
            filter: brightness(1.1);
        }

@media (max-width: 768px){.nexus-apex .nexus-orbit-vault{
                padding: 0 20px;
            }

.nexus-apex .nexus-orbit-ribbon{
                gap: 20px;
                padding: 8px 16px;
            }

.nexus-apex .nexus-spool{
                display: none; 
            }}

.echo-stem {
    font-family: "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
    line-height: 1.7;
    color: var(--text-main);
}
.echo-stem,
.echo-stem *,
.echo-stem *::before,
.echo-stem *::after {
    box-sizing: border-box;
}

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

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

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

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

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

.echo-stem{
            background-color: #050505;
            padding: 80px 40px 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

.echo-stem .echo-bedrock-vault{
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 60px;
        }

.echo-stem .echo-bedrock-brand-veil{
            flex: 1;
            min-width: 280px;
        }

.echo-stem .echo-bedrock-crest{
            font-size: 24px;
            font-weight: 700;
            color: white;
            margin-bottom: 20px;
        }

.echo-stem .echo-bedrock-lint{
            color: #a0a0a0;
            font-size: 14px;
            line-height: 2;
        }

.echo-stem .echo-bedrock-clump{
            display: flex;
            gap: 80px;
            flex-wrap: wrap;
        }

.echo-stem .echo-bedrock-bead{
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

.echo-stem .echo-bedrock-bead-crest{
            font-size: 16px;
            font-weight: 600;
            color: white;
        }

.echo-stem .echo-bedrock-node{
            text-decoration: none;
            color: #a0a0a0;
            font-size: 14px;
            transition: 0.25s ease;
        }

.echo-stem .echo-bedrock-node:hover{
            color: #da1e2e;
        }

.echo-stem .echo-bedrock-ribbon{
            max-width: 1200px;
            margin: 60px auto 0;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
            color: #555;
            font-size: 13px;
        }