/* 基础变量定义 - 深色沉浸展示型 */
        :root {
            --bg-deep: #08090b;
            --bg-surface: #12141a;
            --bg-elevated: #1a1d26;
            --text-bright: #ffffff;
            --text-dim: #a0a5b5;
            --brand-orange: #f1780e;
            --brand-glow: #ff8c28;
            --radius-lg: 22px;
            --radius-md: 18px;
            --shadow-base: 0 10px 30px rgba(0, 0, 0, 0.6);
            --shadow-highlight: 0 4px 20px rgba(241, 120, 14, 0.15);
            --ease: all 0.25s ease;
        }

        /* 重置与排版规范 */
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-dim);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            word-break: break-word;
            overflow-wrap: break-word;
        }

        /* 核心布局容器 */
        .sheath { display: flex; flex-direction: column; min-height: 100vh; }
        .scroll {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Flexbox 安全规范 */
        .chunk {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
        }
        .chunk > * { min-width: 0; }

        /* 文本排版 */
        .topic {
            color: var(--text-bright);
            white-space: normal;
            font-weight: 700;
        }
        .prose { word-break: keep-all; margin-bottom: 1.5rem; }
        .figure { max-width: 100%; height: auto; display: block; border-radius: var(--radius-lg); }

        /* 按钮与交互 */
        .macro {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            background-color: var(--brand-orange);
            color: #fff;
            text-decoration: none;
            border-radius: 100px;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--ease);
            border: 2px solid var(--brand-orange);
            box-shadow: 0 4px 15px rgba(241, 120, 14, 0.3);
        }
        .macro:hover, .macro:focus {
            background-color: var(--brand-glow);
            border-color: var(--brand-glow);
            transform: translateY(-3px);
            box-shadow: var(--shadow-highlight);
            outline: none;
        }
        .macro-ghost {
            background-color: transparent;
            color: var(--text-bright);
            border-color: rgba(255,255,255,0.2);
            box-shadow: none;
        }
        .macro-ghost:hover, .macro-ghost:focus {
            background-color: rgba(255,255,255,0.05);
            border-color: var(--text-bright);
        }

        /* 顶部导航 */
        .apex {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(8, 9, 11, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .ribbon {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }
        .seal img { height: 32px; width: auto; }
        .stack {
            display: flex;
            gap: 2rem;
        }
        .path {
            color: var(--text-dim);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--ease);
            padding: 8px 0;
            position: relative;
        }
        .path:hover, .path:focus {
            color: var(--text-bright);
        }
        .path.active { color: var(--brand-orange); }
        .path.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--brand-orange);
            border-radius: 2px;
        }

        /* 主体内容容器 */
        .binder { flex-grow: 1; }

        /* Hero 展示区 (Vertical Stack 原型) */
        .cover {
            padding: 100px 0 60px;
            position: relative;
            overflow: hidden;
        }
        .cover::before {
            content: '';
            position: absolute;
            top: -20%;
            left: 50%;
            transform: translateX(-50%);
            width: 60vw;
            height: 60vw;
            background: radial-gradient(circle, rgba(241, 120, 14, 0.08) 0%, transparent 60%);
            z-index: -1;
            pointer-events: none;
        }
        .cover .topic {
            font-size: clamp(2.5rem, 5vw, 4rem);
            line-height: 1.1;
            margin-bottom: 1.5rem;
            text-align: center;
            letter-spacing: -0.02em;
        }
        .cover .prose {
            font-size: clamp(1.1rem, 2vw, 1.3rem);
            text-align: center;
            max-width: 800px;
            margin: 0 auto 3rem;
            color: var(--text-dim);
        }
        .cover-actions {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin-bottom: 5rem;
        }
        .cover .figure {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: 0 20px 50px rgba(0,0,0,0.8);
            border: 1px solid rgba(255,255,255,0.05);
        }

        /* 基础区块 */
        .draft { padding: 100px 0; }
        .draft-topic {
            font-size: clamp(2rem, 3vw, 2.8rem);
            margin-bottom: 1.5rem;
            text-align: center;
        }
        .draft-desc {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 4rem;
            font-size: 1.15rem;
        }

        /* 卡片网格体系 */
        .sheet-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }
        .folio {
            background-color: var(--bg-surface);
            border: 1px solid rgba(255,255,255,0.03);
            border-radius: var(--radius-md);
            padding: 2.5rem;
            transition: var(--ease);
            display: flex;
            flex-direction: column;
        }
        .folio:hover {
            transform: translateY(-5px);
            background-color: var(--bg-elevated);
            border-color: rgba(241, 120, 14, 0.2);
            box-shadow: var(--shadow-base);
        }
        .glyph {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(241, 120, 14, 0.1), rgba(241, 120, 14, 0.02));
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(241, 120, 14, 0.1);
        }
        .glyph svg { width: 28px; height: 28px; fill: var(--brand-orange); }
        .folio .topic { font-size: 1.3rem; margin-bottom: 1rem; }

        /* 特色条带 (交替布局) */
        .tape {
            background-color: var(--bg-surface);
            border-top: 1px solid rgba(255,255,255,0.02);
            border-bottom: 1px solid rgba(255,255,255,0.02);
        }
        .tape-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 4rem;
        }
        .tape-inner > * { min-width: 0; flex: 1 1 400px; }
        
        /* 次级展示面板 */
        .appendix {
            padding: 80px 0;
            background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-surface) 100%);
        }
        .folio-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 1px;
            background-color: rgba(255,255,255,0.05);
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-top: 3rem;
        }
        .node {
            background-color: var(--bg-elevated);
            padding: 3rem 2rem;
            text-align: center;
        }
        .node-stat {
            font-size: 3rem;
            font-weight: 800;
            color: var(--brand-orange);
            line-height: 1;
            margin-bottom: 1rem;
        }

        /* 文本密集区 */
        .prose-block {
            background-color: rgba(255,255,255,0.02);
            padding: 2.5rem;
            border-radius: var(--radius-md);
            margin-bottom: 2rem;
            border-left: 4px solid var(--brand-orange);
        }
        .prose-block .topic { font-size: 1.5rem; }

        /* 页脚 */
        .root {
            background-color: #050608;
            padding: 60px 0 40px;
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        .root-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 4rem;
            margin-bottom: 4rem;
        }
        .root .topic { font-size: 1.5rem; margin-bottom: 1.5rem; color: #fff; }
        .root-links { display: flex; flex-direction: column; gap: 0.8rem; }
        .root-links .path { padding: 0; font-size: 0.95rem; }
        .legal {
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 2rem;
            display: flex;
            justify-content: space-between;
            font-size: 0.85rem;
            color: var(--text-dim);
        }

        /* 响应式断点 */
        @media (max-width: 992px) {
            .stack { display: none; /* 移动端简化隐藏导航，保留核心链路 */ }
            .cover .topic { font-size: 2.2rem; }
            .root-grid { grid-template-columns: 1fr; gap: 2rem; }
        }
        @media (max-width: 768px) {
            .tape-inner { flex-direction: column; }
            .cover-actions { flex-direction: column; }
            .macro { width: 100%; }
            .draft { padding: 60px 0; }
        }

.ribbon-apex .ribbon-scroll{
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

.ribbon-apex{
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(8, 9, 11, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }

.ribbon-apex .ribbon-ribbon{
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

.ribbon-apex .ribbon-seal img{ height: 32px; width: auto; }

.ribbon-apex .ribbon-stack{
            display: flex;
            gap: 2rem;
        }

.ribbon-apex .ribbon-path{
            color: #a0a5b5;
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.25s ease;
            padding: 8px 0;
            position: relative;
        }

.ribbon-apex .ribbon-path:hover, .ribbon-apex .ribbon-path:focus{
            color: #ffffff;
        }

.ribbon-apex .ribbon-path.active{ color: #f1780e; }

.ribbon-apex .ribbon-path.active::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #f1780e;
            border-radius: 2px;
        }

@media (max-width: 992px){.ribbon-apex .ribbon-stack{ display: none;  }}

.ribbon-apex {
    background: rgb(8, 9, 11);
    background-image: none;
}

.endnote-root {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.7;
    word-break: break-word;
    color: var(--text-dim);
}
.endnote-root,
.endnote-root *,
.endnote-root *::before,
.endnote-root *::after {
    box-sizing: border-box;
}

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

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

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

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

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

.endnote-root .endnote-scroll{
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

.endnote-root .endnote-topic{
            color: #ffffff;
            white-space: normal;
            font-weight: 700;
        }

.endnote-root .endnote-prose{ word-break: keep-all; margin-bottom: 1.5rem; }

.endnote-root .endnote-path{
            color: #a0a5b5;
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.25s ease;
            padding: 8px 0;
            position: relative;
        }

.endnote-root .endnote-path:hover, .endnote-root .endnote-path:focus{
            color: #ffffff;
        }

.endnote-root .endnote-path.active{ color: #f1780e; }

.endnote-root .endnote-path.active::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #f1780e;
            border-radius: 2px;
        }

.endnote-root{
            background-color: #050608;
            padding: 60px 0 40px;
            border-top: 1px solid rgba(255,255,255,0.05);
        }

.endnote-root .endnote-root-grid{
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 4rem;
            margin-bottom: 4rem;
        }

.endnote-root .endnote-topic{ font-size: 1.5rem; margin-bottom: 1.5rem; color: #fff; }

.endnote-root .endnote-root-links{ display: flex; flex-direction: column; gap: 0.8rem; }

.endnote-root .endnote-root-links .endnote-path{ padding: 0; font-size: 0.95rem; }

.endnote-root .endnote-legal{
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 2rem;
            display: flex;
            justify-content: space-between;
            font-size: 0.85rem;
            color: #a0a5b5;
        }

@media (max-width: 992px){.endnote-root .endnote-root-grid{ grid-template-columns: 1fr; gap: 2rem; }}