/* 
         * 设计契约基因：深色沉浸展示型 (Inner Page Variant - data_ui)
         */
        :root {
            /* 色彩系统 */
            --bg-deep: #08090b;
            --bg-surface: #12141a;
            --bg-elevated: #1a1d26;
            --bg-ui-panel: #232733;
            --text-bright: #ffffff;
            --text-dim: #a0a5b5;
            --text-muted: #5c6375;
            --accent: #f1780e;
            --accent-glow: rgba(241, 120, 14, 0.15);
            --accent-strong: rgba(241, 120, 14, 0.4);
            
            /* 几何与阴影 */
            --radius-lg: 22px;
            --radius-md: 18px;
            --radius-sm: 8px;
            --shadow-base: 0 10px 30px rgba(0, 0, 0, 0.6);
            --shadow-ui: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px var(--accent-glow);
            
            /* 交互与排版 */
            --transition: all 0.25s ease;
            --border-subtle: 1px solid rgba(255, 255, 255, 0.06);
            --border-active: 1px solid rgba(241, 120, 14, 0.3);
            --font-mono: "Fira Code", "Consolas", monospace;
        }

        /* 基础重置 */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            min-width: 0; /* Flex safe */
        }

        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;
            word-break: break-word;
            overflow-wrap: break-word;
            -webkit-font-smoothing: antialiased;
        }

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

        /* 强制复用首页导航栏样式 (The provided snippet & CSS requirements) */
        .apex {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 9, 11, 0.8);
            backdrop-filter: blur(12px);
            border-bottom: var(--border-subtle);
        }
        .ribbon {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: 0 auto;
            padding: 16px 24px;
        }
        .seal {
            display: flex;
            align-items: center;
        }
        .seal img {
            height: 32px;
            width: auto;
        }
        .stack {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }
        .path {
            color: var(--text-dim);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
        }
        .path:hover {
            color: var(--text-bright);
            background: rgba(255, 255, 255, 0.05);
        }
        .path.active {
            color: var(--accent);
            background: var(--accent-glow);
        }

        /* 布局容器 */
        .sheath {
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        .binder {
            flex: 1;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-direction: column;
            gap: 80px;
            padding-bottom: 100px;
        }

        /* 通用排版 */
        .topic-mega {
            color: var(--text-bright);
            font-weight: 700;
            font-size: clamp(2.5rem, 5vw, 4rem);
            line-height: 1.15;
            letter-spacing: -0.02em;
            white-space: normal;
            margin-bottom: 24px;
        }
        .topic-lg {
            color: var(--text-bright);
            font-weight: 700;
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            line-height: 1.2;
            letter-spacing: -0.01em;
            white-space: normal;
            margin-bottom: 16px;
        }
        .topic-md {
            color: var(--text-bright);
            font-weight: 600;
            font-size: 1.25rem;
            line-height: 1.4;
            margin-bottom: 12px;
            white-space: normal;
        }
        .prose {
            font-size: 1.1rem;
            color: var(--text-dim);
            margin-bottom: 32px;
            max-width: 600px;
            word-break: keep-all;
        }

        /* 按钮/宏 */
        .macro {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            background-color: var(--accent);
            color: #fff;
            border-radius: 100px;
            font-weight: 600;
            border: 2px solid var(--accent);
            box-shadow: 0 4px 15px rgba(241, 120, 14, 0.3);
            cursor: pointer;
        }
        .macro:hover {
            background-color: transparent;
            color: var(--accent);
            transform: translateY(-2px);
        }
        .macro-ghost {
            background-color: transparent;
            border-color: rgba(255, 255, 255, 0.2);
            color: var(--text-bright);
            box-shadow: none;
        }
        .macro-ghost:hover {
            border-color: var(--text-bright);
            background-color: rgba(255, 255, 255, 0.05);
            color: var(--text-bright);
        }

        /* 通用 Flex 结构 */
        .chunk-flex {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            align-items: center;
        }
        .node-half {
            flex: 1 1 400px;
        }

        /* --- 模块 1: Hero AI (数据承载变体) --- */
        .cover {
            padding: 100px 0 20px;
            position: relative;
        }
        .ui-stage {
            position: relative;
            background: var(--bg-surface);
            border: var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-base);
            display: flex;
            flex-direction: column;
            gap: 20px;
            overflow: hidden;
        }
        /* 模拟文档骨架 */
        .mock-doc {
            display: flex;
            flex-direction: column;
            gap: 12px;
            width: 70%;
            opacity: 0.6;
        }
        .mock-line {
            height: 12px;
            background: var(--bg-elevated);
            border-radius: 6px;
        }
        .mock-line:nth-child(1) { width: 40%; height: 24px; margin-bottom: 12px; }
        .mock-line:nth-child(2) { width: 100%; }
        .mock-line:nth-child(3) { width: 90%; }
        .mock-line:nth-child(4) { width: 85%; }
        .mock-line:nth-child(5) { width: 60%; }
        /* 悬浮 AI 对话框 */
        .ai-dialog {
            position: absolute;
            right: 40px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--bg-elevated);
            border: 1px solid rgba(241, 120, 14, 0.2);
            border-radius: var(--radius-md);
            padding: 24px;
            width: 320px;
            box-shadow: var(--shadow-glow);
            backdrop-filter: blur(10px);
            z-index: 2;
        }
        .ai-apex {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
            color: var(--text-bright);
            font-weight: 600;
        }
        .glyph-spark {
            width: 24px;
            height: 24px;
            fill: var(--accent);
        }
        .ai-prose {
            font-size: 0.95rem;
            color: var(--text-dim);
            background: var(--bg-ui-panel);
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border-top-left-radius: 0;
            border-left: 2px solid var(--accent);
        }

        /* --- 模块 2: 一键生成 PPT (流式步骤) --- */
        .flow-zone {
            padding: 40px 0;
        }
        .flow-track {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 40px;
        }
        .flow-node {
            flex: 1 1 250px;
            background: var(--bg-surface);
            border: var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px;
            position: relative;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .flow-node:hover {
            border-color: var(--border-active);
            transform: translateY(-5px);
            box-shadow: var(--shadow-ui);
        }
        .flow-flag {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--bg-elevated);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: 50%;
            color: var(--accent);
            font-weight: 700;
            font-family: var(--font-mono);
            margin-bottom: 8px;
        }
        /* UI Data Mocks inside Flow */
        .data-input {
            background: var(--bg-deep);
            border: 1px dashed rgba(255,255,255,0.15);
            border-radius: var(--radius-sm);
            padding: 16px;
            font-family: "Georgia", serif; /* 衬线字体提升质感 */
            color: var(--text-bright);
            font-size: 0.9rem;
            opacity: 0.8;
        }
        .data-process {
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .pulse-tape {
            width: 4px;
            height: 20px;
            background: var(--accent);
            border-radius: 2px;
            animation: pulse 1.5s infinite ease-in-out;
        }
        .pulse-tape:nth-child(2) { animation-delay: 0.2s; }
        .pulse-tape:nth-child(3) { animation-delay: 0.4s; }
        @keyframes pulse {
            0%, 100% { transform: scaleY(0.5); opacity: 0.5; }
            50% { transform: scaleY(1.5); opacity: 1; }
        }
        .data-output {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 8px;
        }
        .mock-slide {
            aspect-ratio: 16/9;
            background: var(--bg-elevated);
            border: 1px solid rgba(255,255,255,0.05);
            border-radius: 4px;
            position: relative;
            overflow: hidden;
        }
        .mock-slide::before {
            content: '';
            position: absolute;
            top: 20%; left: 10%; right: 40%; height: 4px;
            background: var(--accent);
            border-radius: 2px;
            opacity: 0.5;
        }

        /* --- 模块 3: 多场景赋能 (Bento Box) --- */
        .folio-chunk {
            padding: 40px 0;
        }
        .bento-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }
        .folio {
            background: var(--bg-surface);
            border: var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px;
            display: flex;
            flex-direction: column;
            gap: 24px;
            transition: var(--transition);
            overflow: hidden;
            position: relative;
        }
        .folio:hover {
            border-color: rgba(255,255,255,0.15);
            box-shadow: var(--shadow-base);
        }
        .span-2 { grid-column: span 2; }
        .span-1 { grid-column: span 1; }
        .span-3 { grid-column: span 3; }
        
        /* Bento Data UIs */
        .ui-abstract {
            background: var(--bg-elevated);
            border-radius: var(--radius-sm);
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            border-left: 3px solid var(--accent);
        }
        .ui-abstract-line {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .ui-abstract-line::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }
        .ui-split {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .ui-lang-box {
            background: var(--bg-deep);
            padding: 12px;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            border: 1px solid rgba(255,255,255,0.05);
        }
        .ui-lang-box.highlight {
            border-color: rgba(241, 120, 14, 0.2);
            color: var(--text-bright);
        }
        .ui-table {
            display: flex;
            flex-direction: column;
            gap: 16px;
            background: var(--bg-deep);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.05);
        }
        .ui-prompt {
            background: var(--bg-surface);
            padding: 12px 16px;
            border-radius: 100px;
            font-size: 0.9rem;
            color: var(--text-bright);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .ui-formula {
            font-family: var(--font-mono);
            color: #a6e22e; /* 代码高亮绿 */
            background: rgba(0,0,0,0.3);
            padding: 12px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            border: 1px solid rgba(166, 226, 46, 0.2);
        }

        /* --- 模块 4: 唤醒指南 --- */
        .draft-guide {
            background: linear-gradient(145deg, var(--bg-surface) 0%, var(--bg-deep) 100%);
            border: var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            box-shadow: inset 0 0 40px rgba(0,0,0,0.5);
        }
        .keycap-tape {
            display: inline-flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 16px;
            margin: 32px 0;
            padding: 24px;
            background: rgba(0,0,0,0.3);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.05);
        }
        .keycap {
            background: var(--bg-elevated);
            color: var(--text-bright);
            font-family: var(--font-mono);
            font-size: 1.2rem;
            font-weight: 700;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255,255,255,0.1);
            border-bottom-width: 4px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.5);
        }
        .keycap-plus {
            color: var(--text-dim);
            font-size: 1.5rem;
        }

        /* 页脚壳层 */
        .root {
            border-top: var(--border-subtle);
            background: var(--bg-deep);
            padding: 40px 24px;
            text-align: center;
        }
        .root-prose {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 16px;
        }
        .root-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-dim);
            letter-spacing: 0.1em;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .bento-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .span-3 { grid-column: span 2; }
            .ai-dialog {
                position: relative;
                right: 0;
                top: 0;
                transform: none;
                width: 100%;
                margin-top: 24px;
            }
            .mock-doc { width: 100%; }
        }

        @media (max-width: 768px) {
            .bento-grid {
                grid-template-columns: 1fr;
            }
            .span-2, .span-3 {
                grid-column: span 1;
            }
            .topic-mega {
                font-size: 2rem;
            }
            .binder {
                gap: 60px;
                padding-bottom: 60px;
            }
            .chunk-flex {
                flex-direction: column;
                align-items: flex-start;
            }
            .ui-stage {
                padding: 24px;
            }
        }

.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; }}