:root {
            --accent: #e0684d;
            --accent-soft: rgba(224, 104, 77, 0.1);
            --base: #ffffff;
            --surface: #f5f5f7;
            --ink: #1d1d1f;
            --ink-rune: #424245;
            --radius-pith: 14px;
            --radius-nib: 30px;
            --shadow-soft: 0 10px 30px rgba(0,0,0,0.08);
            --shadow-hard: 0 20px 40px rgba(0,0,0,0.12);
        }

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

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

        /* 强制复用首页导航栏风格 */
        .crest {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .trail {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

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

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

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

        .dock {
            text-decoration: none;
            color: var(--ink);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.35s ease;
        }

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

        .dock.active {
            color: var(--accent);
            font-weight: 700;
        }

        /* 响应式导航调整 */
        @media (max-width: 768px) {
            .loom {
                display: none;
            }
        }

        /* 主内容容器 */
        .pith {
            margin-top: 64px;
            width: 100%;
        }

        /* 第一部分：Intro - 让你的演示脱颖而出 */
        .stage-vellum {
            min-height: 70vh;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            padding: 80px 5%;
            background: linear-gradient(135deg, #f5f5f7 0%, #ffffff 100%);
            position: relative;
            overflow: hidden;
        }

        .stage-vellum::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, var(--accent-soft) 0%, transparent 70%);
            z-index: 0;
        }

        .vista-info {
            flex: 1;
            min-width: 320px;
            position: relative;
            z-index: 1;
            padding-right: 40px;
        }

        .gist-pith {
            font-size: clamp(32px, 5vw, 56px);
            line-height: 1.1;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 24px;
            word-break: keep-all;
        }

        .rune-slab {
            font-size: 18px;
            color: var(--ink-rune);
            max-width: 600px;
            margin-bottom: 40px;
            word-break: break-word;
        }

        .etch-prime {
            display: inline-block;
            background: var(--accent);
            color: #ffffff;
            padding: 16px 42px;
            border-radius: var(--radius-nib);
            text-decoration: none;
            font-weight: 600;
            transition: transform 0.35s ease, box-shadow 0.35s ease;
            border: none;
            cursor: pointer;
        }

        .etch-prime:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(224, 104, 77, 0.3);
        }

        .vista-visual {
            flex: 1;
            min-width: 320px;
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }

        .folio-float {
            background: var(--base);
            padding: 20px;
            border-radius: var(--radius-pith);
            box-shadow: var(--shadow-hard);
            width: 100%;
            max-width: 540px;
            transform: rotate(-2deg);
            transition: transform 0.5s ease;
        }

        .folio-float:hover {
            transform: rotate(0deg) scale(1.02);
        }

        /* 第二部分：Detail - 分类分明 */
        .veil-detail {
            padding: 100px 5%;
            background-color: var(--base);
        }

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

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

        .cage-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
        }

        .slab-twig {
            flex: 1;
            min-width: 280px;
            max-width: 380px;
            padding: 40px;
            border-radius: var(--radius-pith);
            background: var(--surface);
            transition: all 0.35s ease;
            border: 1px solid transparent;
        }

        .slab-twig:hover {
            background: var(--base);
            border-color: var(--accent-soft);
            box-shadow: var(--shadow-soft);
            transform: translateY(-5px);
        }

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

        .gist-twig {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .rune-twig {
            font-size: 15px;
            color: var(--ink-rune);
        }

        /* 第三部分：Proof - 实用表格 */
        .proof-article {
            padding: 100px 5%;
            background: var(--surface);
        }

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

        .lens-context {
            flex: 1;
            min-width: 320px;
            background: #ffffff;
            padding: 40px;
            border-radius: var(--radius-pith);
            box-shadow: var(--shadow-soft);
        }

        .twig-band {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid #f0f0f0;
        }

        .twig-band:last-child {
            border-bottom: none;
        }

        .pips-small {
            color: var(--accent);
            flex-shrink: 0;
        }

        /* 页脚区域 */
        .keel {
            background: var(--surface);
            padding: 80px 5% 40px;
            border-top: 1px solid rgba(0,0,0,0.05);
        }

        .spine {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }

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

        .gist-foot {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--ink);
        }

        .dock-foot {
            display: block;
            text-decoration: none;
            color: var(--ink-rune);
            font-size: 14px;
            margin-bottom: 12px;
            transition: color 0.3s;
        }

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

        .rim {
            max-width: 1200px;
            margin: 60px auto 0;
            padding-top: 30px;
            border-top: 1px solid rgba(0,0,0,0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
            color: #86868b;
        }

        .brand-rune {
            font-weight: 700;
            color: var(--ink);
            font-size: 15px;
        }

        /* SVG 样式 */
        .svg-pips {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        @media (max-width: 1024px) {
            .stage-vellum {
                text-align: center;
                justify-content: center;
                padding-top: 60px;
            }
            .vista-info {
                padding-right: 0;
                margin-bottom: 60px;
            }
            .rune-slab {
                margin-left: auto;
                margin-right: auto;
            }
        }

.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; }}