/* 
         * =========================================
         * xchat 视觉系统契约 (同族变体)
         * =========================================
         */
        :root {
            --surface: #ffffff;
            --surface-alt: #f4f7f9;
            --surface-dark: #1e293b;
            --radius: 16px;
            --radius-sm: 8px;
            --shadow-soft: 0 12px 36px -8px rgba(112, 193, 225, 0.15);
            --shadow-hover: 0 20px 40px -10px rgba(112, 193, 225, 0.25);
            --primary: #70c1e1;
            --primary-dark: #58a9c9;
            --text-main: #2d3748;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border: rgba(112, 193, 225, 0.15);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: 0.25s ease;
        }

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

        body {
            font-family: var(--font);
            background-color: var(--surface-alt);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* 强制基础约束 */
        .shell, .matrix, .herd, .loft-cloak, .orbit, .hush-realm {
            display: flex;
            flex-wrap: wrap;
        }

        .shell > *, .matrix > *, .herd > *, .loft-cloak > *, .orbit > *, .hush-realm > * {
            min-width: 0;
        }

        .gist, .crest {
            word-break: break-word;
            overflow-wrap: break-word;
            white-space: normal;
        }

        /* 
         * =========================================
         * 导航栏 (复用首页结构)
         * =========================================
         */
        .loft-cloak {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            padding: 1rem 5%;
            align-items: center;
            justify-content: space-between;
        }

        .glyph {
            height: 36px;
        }

        .glyph img {
            height: 100%;
            object-fit: contain;
        }

        .orbit {
            gap: 2rem;
            align-items: center;
        }

        .axon {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-muted);
            position: relative;
            padding: 0.5rem 0;
        }

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

        .axon.active {
            color: var(--primary);
            font-weight: 600;
        }

        .axon.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        /* 
         * =========================================
         * 布局容器 & 页面区块
         * =========================================
         */
        .cloak {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 5%;
        }

        /* Section 1: 引入区 (Hero变体) */
        .flare {
            padding: 12vh 0 8vh;
            background: linear-gradient(145deg, #ffffff 0%, #eef6f9 100%);
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .flare::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(112,193,225,0.08) 0%, rgba(255,255,255,0) 70%);
            border-radius: 50%;
            z-index: 0;
        }

        .flare .cloak {
            position: relative;
            z-index: 1;
        }

        .crest-apex {
            line-height: 1.25;
            color: var(--surface-dark);
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 800;
            letter-spacing: -0.03em;
            max-width: 800px;
            margin-bottom: 1.5rem;
        }

        .flare .gist {
            font-size: clamp(1.1rem, 2vw, 1.25rem);
            color: var(--text-muted);
            max-width: 700px;
            margin-bottom: 4rem;
        }

        .matrix {
            gap: 2rem;
            margin-top: 3rem;
        }

        .matrix > .voxel {
            flex: 1 1 340px;
            background: var(--surface);
            padding: 32px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: 0 4px 12px rgba(0,0,0,0.02);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .voxel:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        /* Section 2: 算法区 */
        .prism {
            padding: 8vh 0;
            background-color: var(--surface-alt);
        }

        .crest {
            font-size: clamp(2rem, 3vw, 2.5rem);
            font-weight: 700;
            color: var(--surface-dark);
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }

        .prism .gist-lead {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 3rem;
        }

        .herd {
            gap: 24px;
        }

        .herd > .voxel {
            flex: 1 1 400px;
            background: var(--surface);
            border-radius: var(--radius);
            padding: 40px 32px;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(255,255,255,0.5);
            box-shadow: var(--shadow-soft);
        }

        .rune {
            width: 48px;
            height: 48px;
            background: rgba(112, 193, 225, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--primary);
        }

        .rune svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .crest-sub {
            font-size: 1.35rem;
            font-weight: 600;
            color: var(--surface-dark);
            margin-bottom: 1rem;
        }

        /* Section 3: 隐私设置区 */
        .apex {
            padding: 10vh 0;
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .cloak-split {
            display: flex;
            flex-wrap: wrap;
            gap: 4rem;
            align-items: center;
        }

        .cloak-split > * {
            flex: 1 1 450px;
            min-width: 0;
        }

        .lens-cloak {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--border);
            background: var(--surface-alt);
        }

        .lens {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s ease;
        }

        .lens-cloak:hover .lens {
            transform: scale(1.02);
        }

        .stem-vein {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .stem {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
        }

        .stem .rune {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            margin-bottom: 0;
            flex-shrink: 0;
        }

        .stem .rune svg {
            width: 16px;
            height: 16px;
        }

        .stem-gist h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--surface-dark);
            margin-bottom: 0.25rem;
        }

        .stem-gist p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Section 4: 审计区 */
        .realm {
            padding: 8vh 0;
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            color: var(--surface);
            text-align: center;
        }

        .realm .crest {
            color: var(--surface);
        }

        .realm .gist {
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto 2.5rem;
        }

        .band {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.5rem;
        }

        .band > * {
            min-width: 0;
        }

        .flux {
            display: inline-block;
            padding: 14px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            cursor: pointer;
            text-align: center;
        }

        .flux-primary {
            background: var(--primary);
            color: white;
            box-shadow: 0 8px 24px rgba(112, 193, 225, 0.3);
            border: 1px solid transparent;
        }

        .flux-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 12px 28px rgba(112, 193, 225, 0.4);
            transform: translateY(-2px);
        }

        .flux-ghost {
            background: rgba(255,255,255,0.1);
            color: white;
            border: 1px solid rgba(255,255,255,0.2);
            backdrop-filter: blur(4px);
        }

        .flux-ghost:hover {
            background: rgba(255,255,255,0.2);
            transform: translateY(-2px);
        }

        /* Footer */
        .hush {
            background: #0f172a;
            color: var(--text-light);
            padding: 4rem 5% 2rem;
            border-top: 1px solid rgba(255,255,255,0.05);
        }

        .hush-realm {
            max-width: 1240px;
            margin: 0 auto;
            justify-content: space-between;
            gap: 2rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding-bottom: 2rem;
            margin-bottom: 2rem;
        }

        .hush-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--surface);
            letter-spacing: -0.02em;
        }

        .hush-gist {
            font-size: 0.9rem;
            margin-top: 1rem;
            max-width: 300px;
        }

        .hush-vein {
            display: flex;
            gap: 2rem;
        }
        
        .hush-vein a:hover {
            color: var(--surface);
        }

        .hush-bottom {
            text-align: center;
            font-size: 0.85rem;
        }

        /* 响应式断点 */
        @media (max-width: 768px) {
            .loft-cloak {
                padding: 1rem 5%;
                flex-direction: column;
                gap: 1rem;
            }
            .orbit {
                gap: 1rem;
                justify-content: center;
            }
            .flare {
                padding: 10vh 0 6vh;
            }
            .cloak-split {
                gap: 2rem;
            }
            .matrix > .voxel,
            .herd > .voxel,
            .cloak-split > * {
                flex-basis: 100%;
            }
            .hush-realm {
                flex-direction: column;
                text-align: center;
            }
            .hush-vein {
                justify-content: center;
                flex-wrap: wrap;
            }
            .hush-gist {
                margin: 1rem auto;
            }
        }

.orbit-loft-cloak .orbit-orbit, .orbit-loft-cloak{
            display: flex;
            flex-wrap: wrap;
        }

.orbit-loft-cloak .orbit-orbit > *, .orbit-loft-cloak > *{
            min-width: 0;
        }

.orbit-loft-cloak{
            justify-content: space-between;
            align-items: center;
            padding: 16px 6vw;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid rgba(112, 193, 225, 0.15);
        }

.orbit-loft-cloak .orbit-glyph img{
            height: 36px;
            width: auto;
            border-radius: 0; 
        }

.orbit-loft-cloak .orbit-orbit{
            gap: 1.5rem;
            align-items: center;
        }

.orbit-loft-cloak .orbit-axon{
            font-weight: 500;
            font-size: 0.95rem;
            color: #64748b;
            padding: 8px 16px;
            border-radius: 8px;
        }

.orbit-loft-cloak .orbit-axon:hover, .orbit-loft-cloak .orbit-axon.active{
            color: #70c1e1;
            background: rgba(112, 193, 225, 0.1);
        }

@media (max-width: 768px){.orbit-loft-cloak .orbit-orbit{ display: flex; flex-direction: column; width: 100%; margin-top: 1rem; align-items: flex-start; gap: 0.5rem; }

.orbit-loft-cloak .orbit-axon{ width: 100%; padding: 12px 16px; background: rgba(0,0,0,0.02); }}

.orbit-loft-cloak {
    background: rgb(255, 255, 255);
    background-image: none;
}

.echo-hush {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.75;
    word-break: break-word;
    color: var(--gist-main);
}
.echo-hush,
.echo-hush *,
.echo-hush *::before,
.echo-hush *::after {
    box-sizing: border-box;
}

.echo-hush nav,
.echo-hush div,
.echo-hush section,
.echo-hush article,
.echo-hush aside,
.echo-hush p,
.echo-hush h1,
.echo-hush h2,
.echo-hush h3,
.echo-hush h4,
.echo-hush h5,
.echo-hush h6,
.echo-hush a {
    margin: 0;
    padding: 0;
    font: inherit;
    color: inherit;
    letter-spacing: inherit;
    line-height: inherit;
}

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

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

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

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

.echo-hush .echo-realm, .echo-hush{
            display: flex;
            flex-wrap: wrap;
        }

.echo-hush .echo-realm > *, .echo-hush > *{
            min-width: 0;
        }

.echo-hush .echo-realm{
            width: 100%;
            max-width: 1240px; 
            margin: 0 auto;
            padding: 0 6vw;
        }

.echo-hush{ background: #0f172a; padding: 80px 6vw 40px; color: #64748b; }

.echo-hush .echo-realm{ justify-content: space-between; gap: 4rem; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 40px; margin-bottom: 30px; }

.echo-hush .echo-hush-brand{ font-size: 1.8rem; font-weight: 800; color: white; margin-bottom: 1.5rem; display: block; letter-spacing: -0.02em; }

.echo-hush .echo-hush-gist{ max-width: 300px; line-height: 1.6; }

.echo-hush .echo-hush-vein{ display: flex; flex-direction: column; gap: 1rem; }

.echo-hush .echo-hush-vein-crest{ color: white; font-weight: 600; margin-bottom: 0.5rem; font-size: 1.1rem; }

.echo-hush .echo-hush-axon{ transition: all 0.25s ease; }

.echo-hush .echo-hush-axon:hover{ color: #70c1e1; }

.echo-hush .echo-band{ width: 100%; text-align: center; font-size: 0.9rem; }

@media (max-width: 768px){.echo-hush .echo-realm{ flex-direction: column; gap: 2rem; }}