:root {
            --primary: #504df9;
            --primary-soft: rgba(80, 77, 249, 0.08);
            --accent: #00d2ff;
            --bg: #ffffff;
            --verba-color: #4a4a4a;
            --titulus-color: #1a1a1a;
            --arca-shadow: 0 15px 40px rgba(80, 77, 249, 0.06);
            --radius: 16px;
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

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

        body {
            font-family: var(--font);
            line-height: 1.8;
            color: var(--verba-color);
            background-color: var(--bg);
            overflow-x: hidden;
        }

        /* 导航区域 */
        .caput {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(15px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .pathway {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .glyph {
            height: 32px;
            min-width: 0;
        }

        .glyph img {
            height: 100%;
            display: block;
        }

        .seriem {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            min-width: 0;
        }

        .nexo {
            text-decoration: none;
            color: var(--titulus-color);
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.35s ease;
            position: relative;
        }

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

        .nexo.active::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* 主内容布局 */
        .ambito {
            padding-top: 70px;
        }

        /* Hero区：玩转表格函数 (Reverse Split) */
        .scena {
            min-height: 90vh;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            padding: 4rem 2rem;
            max-width: 1280px;
            margin: 0 auto;
            gap: 4rem;
        }

        .vista-media {
            flex: 1;
            min-width: 320px;
            order: 2; /* Reverse Split: Media on right for desktop */
        }

        .focal-velum {
            flex: 1;
            min-width: 320px;
            order: 1;
        }

        .titulus-focal {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            line-height: 1.2;
            color: var(--titulus-color);
            font-weight: 800;
            margin-bottom: 1.5rem;
            word-break: keep-all;
        }

        .verba-focal {
            font-size: 1.15rem;
            color: #666;
            margin-bottom: 2.5rem;
            max-width: 540px;
        }

        /* 数据UI模拟：公式面板 */
        .folio-formula {
            background: #1e1e2e;
            border-radius: var(--radius);
            padding: 2rem;
            box-shadow: 0 20px 50px rgba(0,0,0,0.15);
            font-family: "Fira Code", monospace;
            color: #cdd6f4;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(255,255,255,0.1);
        }

        .folio-formula::before {
            content: "fx";
            position: absolute;
            top: 10px;
            right: 20px;
            font-size: 3rem;
            font-style: italic;
            opacity: 0.05;
            color: #fff;
        }

        .code-line {
            display: block;
            margin-bottom: 0.5rem;
            word-break: break-all;
        }

        .code-fn { color: #89b4fa; }
        .code-str { color: #a6e3a1; }
        .code-ref { color: #f9e2af; }

        /* 幻灯片演示区 (Aside: Capability) */
        .vista-pro {
            background: linear-gradient(to bottom, #fcfcff, #ffffff);
            padding: 6rem 2rem;
        }

        .arca-wide {
            max-width: 1200px;
            margin: 0 auto;
        }

        .titulus-sub {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 3.5rem;
            color: var(--titulus-color);
        }

        .chorus-folio {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .folio-unita {
            background: #fff;
            padding: 2.5rem;
            border-radius: var(--radius);
            border: 1px solid rgba(0,0,0,0.04);
            transition: all 0.35s ease;
            position: relative;
        }

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

        .signum-bloc {
            width: 56px;
            height: 56px;
            background: var(--primary-soft);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--primary);
        }

        .titulus-small {
            font-size: 1.4rem;
            margin-bottom: 1rem;
            color: var(--titulus-color);
        }

        /* 学术办公区 (Aside: FAQ) */
        .spatium-academic {
            padding: 6rem 2rem;
            max-width: 1000px;
            margin: 0 auto;
        }

        .velum-academic {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .folio-faq {
            background: #f8faff;
            padding: 1.8rem 2.5rem;
            border-radius: var(--radius);
            display: flex;
            align-items: flex-start;
            gap: 1.5rem;
        }

        .signum-check {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            color: #2ecc71;
            margin-top: 4px;
        }

        .axion-impel {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 1rem 2.5rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.35s ease;
            box-shadow: 0 10px 20px rgba(80, 77, 249, 0.2);
        }

        .axion-impel:hover {
            transform: scale(1.05);
            box-shadow: 0 15px 25px rgba(80, 77, 249, 0.3);
        }

        /* 页脚 */
        .cauda {
            background: #f4f4f7;
            padding: 5rem 2rem 3rem;
            margin-top: 4rem;
        }

        .finis-velum {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 3rem;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding-bottom: 3rem;
        }

        .fundus-brand {
            flex: 1;
            min-width: 240px;
        }

        .fundus-brand h3 {
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }

        .fundus-links {
            display: flex;
            gap: 4rem;
            flex-wrap: wrap;
        }

        .unita-seriem {
            list-style: none;
        }

        .unita-seriem li {
            margin-bottom: 0.8rem;
        }

        .unita-seriem a {
            color: #666;
            text-decoration: none;
            transition: color 0.3s;
        }

        .unita-seriem a:hover {
            color: var(--primary);
        }

        .cauda-copyright {
            text-align: center;
            padding-top: 2rem;
            font-size: 0.9rem;
            color: #999;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .seriem {
                display: none; /* 简化移动端展示 */
            }

            .scena {
                flex-direction: column;
                text-align: center;
                padding: 3rem 1.5rem;
            }

            .vista-media {
                order: 1;
                width: 100%;
            }

            .focal-velum {
                order: 2;
                width: 100%;
            }

            .verba-focal {
                margin: 0 auto 2rem;
            }
        }

.vindex-caput {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.8;
    word-break: break-word;
    color: var(--verba-color);
}
.vindex-caput,
.vindex-caput *,
.vindex-caput *::before,
.vindex-caput *::after {
    box-sizing: border-box;
}

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

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

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

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

.vindex-caput a.vindex-nexo {
    --aisite-shell-nav-padding: 0;
    --aisite-shell-nav-margin: 0;
    --aisite-shell-nav-line-height: normal;
    --aisite-shell-nav-display: inline;
    --aisite-shell-nav-height: auto;
    --aisite-shell-nav-min-height: auto;
}

.vindex-caput a.vindex-nexo,
.vindex-caput a.vindex-nexo:hover,
.vindex-caput a.vindex-nexo:focus,
.vindex-caput a.vindex-nexo:active,
.vindex-caput a.vindex-nexo.active,
.vindex-caput a.vindex-nexo[aria-current="page"] {
    background: transparent;
    border: none;
    border-bottom: none;
    box-shadow: none;
    outline: none;
    text-decoration: none;
    padding: var(--aisite-shell-nav-padding, 0);
    margin: var(--aisite-shell-nav-margin, 0);
    line-height: var(--aisite-shell-nav-line-height, normal);
    display: var(--aisite-shell-nav-display, inline);
    height: var(--aisite-shell-nav-height, auto);
    min-height: var(--aisite-shell-nav-min-height, auto);
}

.vindex-caput{
            position: sticky;
            top: 0;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

.vindex-caput .vindex-pathway{
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

.vindex-caput .vindex-glyph{
            height: 32px;
            min-width: 0;
        }

.vindex-caput .vindex-glyph img{
            height: 100%;
            display: block;
        }

.vindex-caput .vindex-seriem{
            display: flex;
            gap: 2rem;
            align-items: center;
            flex-wrap: wrap;
        }

.vindex-caput .vindex-nexo{
            text-decoration: none;
            color: #333333;
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.35s ease;
            position: relative;
            min-width: 0;
        }

.vindex-caput .vindex-nexo:hover, .vindex-caput .vindex-nexo.active{
            color: #504df9;
        }

.vindex-caput .vindex-nexo.active::after{
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 2px;
            background: #504df9;
        }

@media (max-width: 768px){.vindex-caput .vindex-pathway{ height: auto; padding: 1rem; }

.vindex-caput .vindex-seriem{ width: 100%; justify-content: center; gap: 1rem; margin-top: 1rem; }}

.vindex-caput {
    background: rgb(255, 255, 255);
    background-image: none;
}

.fundus-finis {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.8;
    word-break: break-word;
    color: var(--verba-color);
}
.fundus-finis,
.fundus-finis *,
.fundus-finis *::before,
.fundus-finis *::after {
    box-sizing: border-box;
}

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

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

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

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

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

.fundus-finis{
            background: #1a1a1a;
            color: #ccc;
            padding: 6rem 2rem 2rem;
        }

.fundus-finis .fundus-finis-ambito{
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 4rem;
            padding-bottom: 4rem;
            border-bottom: 1px solid #333;
        }

.fundus-finis .fundus-finis-arca{
            flex: 1 1 200px;
            min-width: 0;
        }

.fundus-finis .fundus-finis-arca .fundus-titulus{
            color: white;
            font-size: 1.1rem;
            margin-bottom: 1.5rem;
        }

.fundus-finis .fundus-finis-seriem{
            list-style: none;
        }

.fundus-finis .fundus-finis-unita{
            margin-bottom: 0.8rem;
        }

.fundus-finis .fundus-finis-nexo{
            color: #999;
            text-decoration: none;
            transition: color 0.3s ease;
        }

.fundus-finis .fundus-finis-nexo:hover{
            color: white;
        }

.fundus-finis .fundus-cauda{
            max-width: 1400px;
            margin: 0 auto;
            padding-top: 2rem;
            text-align: center;
            font-size: 0.9rem;
            color: #666;
        }