:root {
            --primary: #e0684d;
            --primary-soft: rgba(224, 104, 77, 0.1);
            --bg: #ffffff;
            --accent-bg: #f5f5f7;
            --text-main: #1d1d1f;
            --text-dim: #86868b;
            --radius: 14px;
            --shadow: 0 10px 30px rgba(0,0,0,0.08);
            --shadow-hover: 0 20px 40px rgba(0,0,0,0.12);
            --transition: 0.35s ease;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            line-height: 1.7;
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        /* 强制导航栏样式复用 */
        .crest {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .trail {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

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

        .loom {
            display: flex;
            gap: 32px;
        }

        .dock {
            text-decoration: none;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }

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

        .dock.active {
            color: var(--primary);
        }

        .dock.active::after {
            content: '';
            position: absolute;
            bottom: -22px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
        }

        /* 主体布局 */
        .veil {
            width: 100%;
            display: flex;
            flex-direction: column;
        }

        /* 第一正文舞台 - Vista (Hero Variant) */
        .vista {
            min-height: 600px;
            width: 100%;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #f5f5f7 0%, #ffffff 100%);
            padding: 80px 24px;
            position: relative;
            overflow: hidden;
        }

        .vista-veil {
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 60px;
        }

        .vista-pith {
            flex: 1;
            min-width: 320px;
        }

        .gist-pith {
            font-size: clamp(36px, 5vw, 56px);
            line-height: 1.1;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 24px;
            word-break: keep-all;
        }

        .rune-prime {
            font-size: 20px;
            color: var(--text-dim);
            max-width: 540px;
            margin-bottom: 40px;
            word-break: break-word;
        }

        .etch-prime {
            display: inline-flex;
            align-items: center;
            background: var(--primary);
            color: #ffffff;
            padding: 16px 42px;
            border-radius: 30px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 10px 20px rgba(224, 104, 77, 0.2);
        }

        .etch-prime:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 30px rgba(224, 104, 77, 0.3);
            background: #cc5d44;
        }

        /* 视觉承载: Data UI (SVG) */
        .vista-lens {
            flex: 1;
            min-width: 320px;
            display: flex;
            justify-content: center;
            position: relative;
        }

        .folio-float {
            background: #ffffff;
            padding: 40px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 480px;
            border: 1px solid rgba(0,0,0,0.03);
        }

        .data-band {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .data-twig {
            height: 12px;
            background: #f0f0f2;
            border-radius: 6px;
            width: 100%;
        }

        .cursor-pips {
            position: absolute;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 4px 12px;
            background: var(--primary);
            color: white;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            top: 60px;
            right: 40px;
            animation: float 3s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% { transform: translate(0, 0); }
            50% { transform: translate(-15px, -10px); }
        }

        /* 协作能力区块 - Stage */
        .stage {
            padding: 100px 24px;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }

        .gist-band {
            text-align: center;
            margin-bottom: 60px;
        }

        .gist-pith {
            font-size: clamp(28px, 3vw, 36px);
            font-weight: 700;
            margin-bottom: 16px;
        }

        .herd-folio {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
        }

        .slab-feature {
            flex: 1;
            min-width: 300px;
            background: #ffffff;
            padding: 40px;
            border-radius: var(--radius);
            border: 1px solid #f0f0f2;
            transition: var(--transition);
        }

        .slab-feature:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-soft);
        }

        .pips-box {
            width: 56px;
            height: 56px;
            background: var(--primary-soft);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            color: var(--primary);
        }

        .gist-sub {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .rune-sub {
            color: var(--text-dim);
            font-size: 16px;
            margin-bottom: 20px;
        }

        /* 侧边信息/价值点 - Aside */
        .pith-aside {
            background: var(--accent-bg);
            padding: 80px 24px;
            margin: 40px 0;
        }

        .pith-veil {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 40px;
        }

        .pith-rune {
            flex: 1;
            min-width: 320px;
        }

        .pith-lens {
            flex: 1;
            min-width: 320px;
            display: flex;
            justify-content: flex-end;
        }

        /* 版本控制对比 - Comparison */
        .stage-comparison {
            padding: 100px 24px;
            background: #fff;
        }

        .folio-history {
            max-width: 900px;
            margin: 0 auto;
            background: #ffffff;
            border-radius: var(--radius);
            border: 1px solid #eee;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .band-crest {
            background: #f8f8f9;
            padding: 16px 24px;
            border-bottom: 1px solid #eee;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .herd-versions {
            padding: 24px;
        }

        .twig-version {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 16px;
            border-bottom: 1px dashed #eee;
            transition: background 0.2s;
        }

        .twig-version:hover {
            background: #fdf6f4;
        }

        .pips-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
        }

        .rune-time {
            font-size: 14px;
            color: var(--text-dim);
            width: 120px;
        }

        .seal-restore {
            margin-left: auto;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            text-decoration: none;
        }

        /* 页脚复用逻辑 */
        .keel {
            background: #1d1d1f;
            color: #ffffff;
            padding: 80px 24px 40px;
        }

        .rim-veil {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 60px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding-bottom: 60px;
        }

        .rim-herd {
            flex: 1;
            min-width: 200px;
        }

        .gist-rim {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 24px;
            color: #ffffff;
        }

        .dock-rim {
            display: block;
            color: #a1a1a6;
            text-decoration: none;
            margin-bottom: 12px;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .spine-base {
            max-width: 1200px;
            margin: 40px auto 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #86868b;
            font-size: 12px;
            flex-wrap: wrap;
            gap: 20px;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .loom {
                display: none; /* 简化移动端，通常会有汉堡菜单 */
            }
            .vista {
                padding: 60px 24px;
                text-align: center;
            }
            .vista-veil {
                flex-direction: column;
            }
            .rune-prime {
                margin: 0 auto 40px;
            }
            .pith-lens {
                justify-content: center;
            }
        }

.trail-crest{
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

.trail-crest .trail-trail{
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 40px;
            height: 72px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

.trail-crest .trail-glyph{
            height: 32px;
            display: flex;
            align-items: center;
        }

.trail-crest .trail-glyph img{
            height: 100%;
            width: auto;
        }

.trail-crest .trail-loom{
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }

.trail-crest .trail-dock{
            text-decoration: none;
            color: #1d1d1f;
            font-size: 15px;
            font-weight: 500;
            transition: 0.35s ease;
            position: relative;
            padding: 4px 0;
        }

.trail-crest .trail-dock:hover{
            color: #e0684d;
        }

.trail-crest .trail-dock.active{
            color: #e0684d;
        }

.trail-crest .trail-dock.active::after{
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: #e0684d;
            border-radius: 2px;
        }

@media (max-width: 768px){.trail-crest .trail-trail{ padding: 0 20px; }

.trail-crest .trail-loom{ display: none; }}

.trail-crest {
    background: rgb(255, 255, 255);
    background-image: none;
}

.spine-keel {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.7;
    word-break: keep-all;
    color: var(--ink);
}
.spine-keel,
.spine-keel *,
.spine-keel *::before,
.spine-keel *::after {
    box-sizing: border-box;
}

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

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

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

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

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

.spine-keel .spine-rune-intro{
            color: #86868b;
            max-width: 700px;
            margin: 0 auto;
        }

.spine-keel{
            padding: 80px 40px 40px;
            background: #ffffff;
            border-top: 1px solid #f5f5f7;
        }

.spine-keel .spine-rim-pith{
            max-width: 1300px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 60px;
        }

.spine-keel .spine-veil-brand{
            flex: 1.5;
            min-width: 200px;
        }

.spine-keel .spine-gist-brand{
            font-size: 24px;
            font-weight: 700;
            color: #e0684d;
            margin-bottom: 20px;
        }

.spine-keel .spine-herd-links{
            flex: 3;
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
        }

.spine-keel .spine-veil-column{
            flex: 1;
            min-width: 140px;
        }

.spine-keel .spine-gist-keel{
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

.spine-keel .spine-twig-keel{
            list-style: none;
        }

.spine-keel .spine-dock-keel{
            display: block;
            text-decoration: none;
            color: #86868b;
            font-size: 14px;
            margin-bottom: 12px;
            transition: 0.35s ease;
        }

.spine-keel .spine-dock-keel:hover{
            color: #e0684d;
        }

.spine-keel .spine-spine-bottom{
            max-width: 1300px;
            margin: 60px auto 0;
            padding-top: 30px;
            border-top: 1px solid #f5f5f7;
            text-align: center;
            font-size: 13px;
            color: #86868b;
        }

@media (max-width: 768px){.spine-keel .spine-rim-pith{ flex-direction: column; gap: 40px; }}