/* ===========================================================
   AI 认知革命 · 互动阅读站
   延续 qiuyiwu-site 的克制编辑感，更书卷气
   =========================================================== */

* { margin: 0; padding: 0; box-sizing: border-box; }
*::selection { background: var(--ink); color: var(--bg); }

:root {
    --bg:        #FAF8F4;
    --bg-2:      #F2EEE5;
    --bg-3:      #ECE7DA;
    --surface:   #FFFFFF;
    --ink:       #3A3936;
    --ink-2:     #55514C;
    --ink-3:     #77716A;
    --ink-4:     #B1AAA2;
    --line:      rgba(207, 201, 190, 0.76);
    --line-2:    #C9C2B4;
    --accent:    #A65D4E;
    --accent-soft: rgba(166,93,78,0.10);
    --accent-2:  #8F6A5F;

    --radius-xs: 10px;
    --radius-sm: 16px;
    --radius-md: 24px;

    --shadow-soft: 0 24px 72px rgba(68, 61, 54, 0.08);
    --shadow-card: 0 4px 16px rgba(68, 61, 54, 0.06);

    --font-sans:    'Inter Tight', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    --font-serif:   'Source Serif 4', Georgia, 'Times New Roman', serif;
    --font-mono:    'JetBrains Mono', 'SF Mono', Menlo, monospace;
    --font-cn:      'Noto Sans SC', 'PingFang SC', sans-serif;
    --font-cn-serif:'Noto Serif SC', 'Songti SC', serif;

    --max-read: 720px;
    --max:      1280px;
    --gutter:   40px;

    /* 五部颜色 — 中国传统矿石颜料系，深沉、和谐、可并列 */
    --part-1: #964840;  /* 觉醒 - 朱砂  cinnabar  */
    --part-2: #7A6240;  /* 协作 - 赭石  raw umber */
    --part-3: #3E6A58;  /* 跃迁 - 石绿  celadon   */
    --part-4: #365C7C;  /* 机会 - 石青  azurite   */
    --part-5: #5A4878;  /* 意义 - 紫晶  amethyst  */

    /* 底色渍 — 极淡，像油画打底的那层色层 */
    --part-1-wash: rgba(150, 72, 64, 0.045);
    --part-2-wash: rgba(122, 98, 64, 0.045);
    --part-3-wash: rgba(62, 106, 88, 0.045);
    --part-4-wash: rgba(54, 92, 124, 0.045);
    --part-5-wash: rgba(90, 72, 120, 0.045);
}

[data-theme="dark"] {
    --bg:      #211F1C;
    --bg-2:    #2B2926;
    --bg-3:    #34322F;
    --surface: #3A3733;
    --ink:     #F1EDE4;
    --ink-2:   #D8D1C6;
    --ink-3:   #ADA69B;
    --ink-4:   #777067;
    --line:    rgba(242,237,224,0.16);
    --line-2:  rgba(242,237,224,0.22);
    --accent:  #D28A7E;
    --accent-soft: rgba(210,138,126,0.14);
    --accent-2: #B9978E;
    --shadow-soft: 0 26px 76px rgba(0, 0, 0, 0.28);
    --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.2);

    /* dark mode: 淡化、提亮，保持同色系 */
    --part-1: #C87A6E;  /* 朱砂 lightened */
    --part-2: #B09060;  /* 赭石 lightened */
    --part-3: #6AA88C;  /* 石绿 lightened */
    --part-4: #6090B8;  /* 石青 lightened */
    --part-5: #8A70B0;  /* 紫晶 lightened */

    --part-1-wash: rgba(200, 122, 110, 0.08);
    --part-2-wash: rgba(176, 144, 96, 0.08);
    --part-3-wash: rgba(106, 168, 140, 0.08);
    --part-4-wash: rgba(96, 144, 184, 0.08);
    --part-5-wash: rgba(138, 112, 176, 0.08);
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    /* sticky nav 占 ~66px, 给所有锚点跳转预留余量 */
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-cn), var(--font-sans);
    background: var(--bg);
    color: var(--ink);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color .4s, color .4s;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

/* ===========================================================
   NAV · 顶部导航
   =========================================================== */
.nav {
    position: sticky; top: 0; z-index: 100;
    background: rgba(250, 248, 244, 0.86);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    transition: background .3s;
}
[data-theme="dark"] .nav { background: rgba(33, 31, 28, 0.86); }

/* ===========================================================
   DARK MODE · 全组件覆盖
   =========================================================== */
[data-theme="dark"] .quote-card,
[data-theme="dark"] .path,
[data-theme="dark"] .framework,
[data-theme="dark"] .aside-block,
[data-theme="dark"] .my-mark,
[data-theme="dark"] .hl-note-popover {
    background: var(--surface);
}
[data-theme="dark"] .ladder-rung.l1 { --rung-color: #4A463F; --rung-ink: #D6CFC2; }
[data-theme="dark"] .ladder-rung.l2 { --rung-color: #7A5A40; --rung-ink: #F1D6BB; }
[data-theme="dark"] .ladder-rung.l3 { --rung-color: #D28A7E; --rung-ink: #FAE6E0; }
[data-theme="dark"] .ladder-rung.l4 { --rung-color: #A09084; --rung-ink: #F1EDE4; }
[data-theme="dark"] .ladder-rung.l5 { --rung-color: #F1EDE4; --rung-ink: #2A2520; }

[data-theme="dark"] .gen-node.g1 { --gen-color: #C8B89D; }
[data-theme="dark"] .gen-node.g2 { --gen-color: #D28A7E; }
[data-theme="dark"] .gen-node.g3 { --gen-color: #8FAACB; }
[data-theme="dark"] .gen-node.g4 { --gen-color: #F1EDE4; }
[data-theme="dark"] .gen-node.g4 .gen-dot { color: #2A2520; }
[data-theme="dark"] .gen-detail { background: var(--bg-2); }

[data-theme="dark"] .emp-cell.e1 { --emp-color: #D28A7E; }
[data-theme="dark"] .emp-cell.e2 { --emp-color: #9CC298; }
[data-theme="dark"] .emp-cell.e3 { --emp-color: #DDC0A0; }
[data-theme="dark"] .emp-cell.e4 { --emp-color: #8FAACB; }
[data-theme="dark"] .emp-cell.e5 { --emp-color: #BFA77D; }
[data-theme="dark"] .emp-cell.e6 { --emp-color: #A28DC0; }
[data-theme="dark"] .emp-cell { background: var(--bg-2); }

[data-theme="dark"] .dicho-side.clock {
    --side-bg: linear-gradient(160deg, rgba(120, 110, 90, 0.18), rgba(94, 86, 74, 0.10));
    --side-border: rgba(186, 178, 162, 0.22);
    --side-accent: #C5BBA8;
}
[data-theme="dark"] .dicho-side.garden {
    --side-bg: linear-gradient(160deg, rgba(124, 178, 124, 0.16), rgba(96, 138, 96, 0.08));
    --side-border: rgba(124, 178, 124, 0.24);
    --side-accent: #A4D1A0;
}
[data-theme="dark"] .dicho-items li::before { opacity: 0.7; }

/* 高亮 mark 在暗色下也能看清 */
[data-theme="dark"] .article-body p mark.hl[data-color="yellow"] { --hl-bg: rgba(245, 200, 90, 0.32); }
[data-theme="dark"] .article-body p mark.hl[data-color="rose"]   { --hl-bg: rgba(220, 140, 130, 0.28); }
[data-theme="dark"] .article-body p mark.hl[data-color="green"]  { --hl-bg: rgba(140, 190, 140, 0.30); }
[data-theme="dark"] .hl-toolbar { background: var(--surface); color: var(--ink); border: 1px solid var(--line); }
[data-theme="dark"] .hl-toolbar button { color: var(--ink); }
[data-theme="dark"] .hl-toolbar button:hover { background: rgba(255,255,255,0.08); }
[data-theme="dark"] .hl-note-popover-actions .save {
    background: var(--ink);
    color: var(--bg);
}

/* 抽屉 */
[data-theme="dark"] .reader-fab { background: var(--surface); color: var(--ink); }
[data-theme="dark"] .reader-fab:hover { background: var(--accent); color: var(--bg); }
[data-theme="dark"] .reader-drawer { background: var(--bg); }

/* 渐变/线性背景，暗色重写 */
[data-theme="dark"] .next-chapter,
[data-theme="dark"] .prev-chapter {
    background: linear-gradient(135deg, var(--bg-2), var(--bg-3));
}
[data-theme="dark"] .my-marks-section { background: var(--bg-2); }
[data-theme="dark"] .ch-link { background: var(--bg-2); }
[data-theme="dark"] .quote-chip.active { color: var(--bg); }
[data-theme="dark"] .quote-chip.active[data-part="1"],
[data-theme="dark"] .quote-chip.active[data-part="2"],
[data-theme="dark"] .quote-chip.active[data-part="3"],
[data-theme="dark"] .quote-chip.active[data-part="4"],
[data-theme="dark"] .quote-chip.active[data-part="5"] { color: var(--bg); }

.nav-inner {
    max-width: var(--max);
    margin: 0 auto;
    padding: 16px var(--gutter);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}
.nav-brand {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 17px;
    font-weight: 600;
    letter-spacing: 0.04em;
    display: flex;
    align-items: baseline;
    gap: 10px;
}
.nav-brand .num {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-3);
    letter-spacing: 0.12em;
}
.nav-links {
    display: flex;
    gap: 28px;
    font-size: 13.5px;
    color: var(--ink-2);
}
.nav-links a {
    transition: color .2s;
    padding: 6px 0;
    border-bottom: 1px solid transparent;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a.active { color: var(--accent); border-bottom-color: var(--accent); }

.nav-end {
    display: flex;
    gap: 8px;
}
.nav-btn {
    background: transparent;
    border: 1px solid var(--line);
    color: var(--ink-2);
    border-radius: var(--radius-xs);
    padding: 6px 12px;
    font-size: 12px;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all .2s;
}
.nav-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ===========================================================
   HERO · 首页主区
   =========================================================== */
.hero {
    padding: 90px var(--gutter) 70px;
    max-width: var(--max);
    margin: 0 auto;
}
.hero-meta {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--ink-3);
    letter-spacing: 0.18em;
    margin-bottom: 28px;
    display: flex;
    gap: 16px;
    align-items: center;
}
.hero-meta .dot {
    width: 4px; height: 4px;
    background: var(--accent);
    border-radius: 50%;
}
.hero-title {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: clamp(46px, 8vw, 92px);
    font-weight: 600;
    line-height: 1.08;
    letter-spacing: -0.01em;
    margin-bottom: 18px;
    color: var(--ink);
}
.hero-sub {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: clamp(20px, 2.4vw, 28px);
    color: var(--ink-2);
    margin-bottom: 56px;
    font-weight: 400;
    letter-spacing: 0.02em;
}

.hero-quote {
    margin: 64px 0 56px;
    max-width: 660px;
    padding-left: 28px;
    border-left: 2px solid var(--accent);
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: clamp(20px, 2.2vw, 26px);
    line-height: 1.55;
    color: var(--ink);
    font-style: normal;
}
.hero-quote em {
    color: var(--accent);
    font-style: normal;
    font-weight: 600;
}
.hero-quote-attr {
    margin-top: 16px;
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--ink-3);
    letter-spacing: 0.18em;
}

.hero-cta {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 40px;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 26px;
    border-radius: var(--radius-xs);
    font-size: 14.5px;
    font-weight: 500;
    transition: all .25s;
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
}
.btn-primary {
    background: var(--ink);
    color: var(--bg);
}
.btn-primary:hover {
    background: var(--accent);
    transform: translateY(-1px);
}
.btn-ghost {
    background: transparent;
    color: var(--ink);
    border-color: var(--line-2);
}
.btn-ghost:hover {
    border-color: var(--ink);
    background: var(--bg-2);
}
.btn .arrow { transition: transform .25s; }
.btn:hover .arrow { transform: translateX(3px); }

/* ===========================================================
   SECTIONS · 通用区块
   =========================================================== */
.sec {
    padding: 70px var(--gutter);
    max-width: var(--max);
    margin: 0 auto;
}
.sec-head {
    display: grid;
    grid-template-columns: 100px 1fr auto;
    gap: 28px;
    align-items: end;
    padding-bottom: 28px;
    margin-bottom: 48px;
    border-bottom: 1px solid var(--line);
}
.sec-num {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--ink-3);
    letter-spacing: 0.18em;
}
.sec-num .idx { font-weight: 600; color: var(--accent); }
.sec-title {
    font-family: var(--font-cn-serif), var(--font-serif);
}
.sec-title .ch {
    display: block;
    font-size: 38px;
    font-weight: 600;
    letter-spacing: 0.01em;
    line-height: 1.1;
}
.sec-title .en {
    display: block;
    margin-top: 8px;
    font-size: 15px;
    color: var(--ink-3);
    font-weight: 400;
    font-family: var(--font-cn);
}
.sec-meta {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--ink-3);
    text-align: right;
    line-height: 1.6;
}
.sec-meta strong {
    display: block;
    color: var(--ink);
    font-size: 14px;
    margin-top: 4px;
}

/* ===========================================================
   PARTS · 五部预览
   =========================================================== */
.parts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    border-top: 1px solid var(--line);
}
.part-row {
    display: grid;
    grid-template-columns: 80px 1fr 1fr 120px;
    align-items: center;
    gap: 32px;
    padding: 28px 0;
    border-bottom: 1px solid var(--line);
    transition: background .25s, padding .25s;
    cursor: pointer;
    position: relative;
}
.part-row::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--part-color);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform .3s;
}
.part-row:hover::before { transform: scaleY(1); }
.part-row:hover { padding-left: 24px; }
.part-row.p1 { --part-color: var(--part-1); }
.part-row.p2 { --part-color: var(--part-2); }
.part-row.p3 { --part-color: var(--part-3); }
.part-row.p4 { --part-color: var(--part-4); }
.part-row.p5 { --part-color: var(--part-5); }

.part-num {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--part-color);
    letter-spacing: 0.1em;
    font-weight: 600;
}
.part-name {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 28px;
    font-weight: 600;
    color: var(--ink);
}
.part-name em {
    display: block;
    font-size: 14px;
    color: var(--ink-3);
    font-weight: 400;
    margin-top: 4px;
    font-family: var(--font-cn);
    font-style: normal;
}
.part-sub {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 17px;
    color: var(--ink-2);
    line-height: 1.5;
}
.part-count {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--ink-3);
    text-align: right;
    letter-spacing: 0.1em;
}
.part-count strong {
    display: block;
    font-size: 22px;
    color: var(--part-color);
    margin-bottom: 2px;
    font-weight: 600;
}

/* 展开后的章节列表 */
.part-chapters {
    grid-column: 1 / -1;
    display: none;
    padding: 8px 0 16px 80px;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 10px;
}
.part-row.open .part-chapters { display: grid; }
.part-row.open { padding-bottom: 18px; }

.ch-link {
    display: grid;
    grid-template-columns: 32px 1fr;
    gap: 12px;
    padding: 12px 14px;
    border-radius: var(--radius-xs);
    background: var(--bg-2);
    color: var(--ink-2);
    transition: all .2s;
    align-items: start;
    text-decoration: none;
}
.ch-link:hover {
    background: var(--accent-soft);
    transform: translateX(2px);
}
.ch-link:hover .ch-title { color: var(--accent); }
.ch-link .ch-num {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--part-color);
    font-weight: 600;
    padding-top: 3px;
}
.ch-link .ch-body {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}
.ch-link .ch-title {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.3;
    transition: color .2s;
}
.ch-link .ch-hook {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 12.5px;
    color: var(--ink-3);
    line-height: 1.5;
}
.ch-link.read .ch-title::after {
    content: " ✓";
    color: #4F8F6A;
    font-size: 11px;
    font-weight: 700;
}
[data-theme="dark"] .ch-link.read .ch-title::after { color: #84B19E; }

/* ===========================================================
   PATHS · 三种推荐入口
   =========================================================== */
.paths {
    margin-top: 60px;
}
.paths-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.path {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 28px 26px;
    transition: all .25s;
    cursor: pointer;
}
.path:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}
.path-label {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 0.16em;
    margin-bottom: 14px;
}
.path-title {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 12px;
    line-height: 1.3;
}
.path-desc {
    font-size: 13.5px;
    color: var(--ink-2);
    line-height: 1.6;
    margin-bottom: 16px;
}
.path-chapters {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--ink-3);
    letter-spacing: 0.08em;
}
.path-chapters span {
    display: inline-block;
    padding: 3px 8px;
    background: var(--bg-2);
    border-radius: 4px;
    margin-right: 4px;
    margin-bottom: 4px;
    color: var(--ink-2);
}

/* ===========================================================
   CHAPTER PAGE · 章节阅读页
   =========================================================== */
.reader {
    display: grid;
    grid-template-columns: 240px 1fr 280px;
    gap: 48px;
    max-width: var(--max);
    margin: 0 auto;
    padding: 60px var(--gutter);
}

/* 左侧目录 */
.toc {
    position: sticky;
    top: 80px;
    align-self: start;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    padding-right: 8px;
}
.toc::-webkit-scrollbar { width: 4px; }
.toc::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 2px; }
.toc-label {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--ink-3);
    letter-spacing: 0.18em;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
}
.toc-item {
    display: block;
    padding: 8px 0 8px 16px;
    font-size: 13px;
    color: var(--ink-3);
    line-height: 1.45;
    border-left: 2px solid transparent;
    transition: all .2s;
    cursor: pointer;
}
.toc-item:hover { color: var(--ink); border-left-color: var(--line-2); }
.toc-item.active {
    color: var(--accent);
    border-left-color: var(--accent);
    font-weight: 500;
}
.toc-item.lv3 { padding-left: 28px; font-size: 12.5px; }
.toc-item.lv4 { padding-left: 40px; font-size: 12px; color: var(--ink-4); }

/* 中间正文 */
.article {
    max-width: var(--max-read);
    margin: 0 auto;
    min-width: 0;
}
.article-head {
    margin-bottom: 56px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--line);
}
.article-meta {
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--ink-3);
    letter-spacing: 0.18em;
    margin-bottom: 20px;
    display: flex;
    gap: 14px;
    align-items: center;
}
.article-meta .part-tag {
    color: var(--part-color);
    font-weight: 600;
}
.article-label {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 14px;
    color: var(--ink-3);
    letter-spacing: 0.2em;
    margin-bottom: 14px;
}
.article-title {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 600;
    line-height: 1.18;
    color: var(--ink);
    margin-bottom: 14px;
    letter-spacing: -0.005em;
}
.article-subtitle {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 19px;
    color: var(--ink-2);
    font-weight: 400;
    line-height: 1.5;
}

.article-body {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 17.5px;
    line-height: 1.85;
    color: var(--ink);
}
.article-body p {
    margin-bottom: 1.4em;
    text-align: justify;
    hyphens: auto;
}
.article-body h2 {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 26px;
    font-weight: 600;
    margin: 2.4em 0 1em;
    color: var(--ink);
    letter-spacing: -0.005em;
    position: relative;
    padding-left: 18px;
}
.article-body h2::before {
    content: "";
    position: absolute;
    left: 0; top: 12px; bottom: 12px;
    width: 3px;
    background: var(--part-color, var(--accent));
}
.article-body h3 {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    margin: 2em 0 0.8em;
    color: var(--ink);
}
.article-body h4 {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 17px;
    font-weight: 600;
    margin: 1.8em 0 0.6em;
    color: var(--ink-2);
}

/* 段落里"…"中的概念短语：克制加粗 + 低饱和度衬线 */
.article-body p strong.concept {
    font-weight: 600;
    color: var(--ink);
    background: linear-gradient(180deg, transparent 88%, var(--accent-soft) 88%);
    padding: 0 1px;
}
[data-theme="dark"] .article-body p strong.concept {
    background: linear-gradient(180deg, transparent 88%, rgba(210, 138, 126, 0.18) 88%);
}

/* 启示段落特殊样式 */
.article-body p.insight {
    background: var(--accent-soft);
    border-left: 3px solid var(--accent);
    padding: 16px 22px;
    margin: 1.8em 0;
    border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
    font-size: 16.5px;
    color: var(--ink);
    font-style: normal;
}

/* 右侧侧栏 */
.aside {
    position: sticky;
    top: 80px;
    align-self: start;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
}
.aside-block {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 22px 22px;
    margin-bottom: 16px;
}
.aside-label {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--ink-3);
    letter-spacing: 0.18em;
    margin-bottom: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.aside-key-quote {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 17px;
    line-height: 1.55;
    color: var(--ink);
    font-weight: 500;
    border-left: 3px solid var(--accent);
    padding-left: 14px;
}
.aside-pull-quote {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 13.5px;
    line-height: 1.55;
    color: var(--ink-2);
    padding: 10px 0;
    border-bottom: 1px dashed var(--line);
    cursor: pointer;
    transition: color .2s;
}
.aside-pull-quote:last-child { border-bottom: none; }
.aside-pull-quote:hover { color: var(--accent); }
.aside-pull-quote::before {
    content: """;
    color: var(--accent);
    margin-right: 4px;
    font-size: 18px;
    font-family: var(--font-cn-serif);
}

/* 进度条 */
.progress {
    position: fixed;
    top: 0; left: 0;
    height: 2px;
    background: var(--accent);
    width: 0;
    z-index: 200;
    transition: width .1s;
}

/* 章节底部 · 延伸阅读 */
.related-chapters {
    margin: 60px 0 0;
    padding-top: 28px;
    border-top: 1px solid var(--line);
}
.related-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 18px;
    flex-wrap: wrap;
    gap: 8px;
}
.related-label {
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--ink-3);
    letter-spacing: 0.18em;
    font-weight: 600;
}
.related-hint {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 13px;
    color: var(--ink-3);
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}
.related-card {
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-left: 3px solid var(--rc-color);
    border-radius: var(--radius-sm);
    padding: 16px 18px 14px;
    text-decoration: none;
    color: inherit;
    transition: all .25s;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-height: 130px;
}
.related-card:hover {
    transform: translateY(-2px);
    border-color: var(--rc-color);
    background: var(--surface);
    box-shadow: var(--shadow-card);
}
.related-card[data-part="1"] { --rc-color: var(--part-1); }
.related-card[data-part="2"] { --rc-color: var(--part-2); }
.related-card[data-part="3"] { --rc-color: var(--part-3); }
.related-card[data-part="4"] { --rc-color: var(--part-4); }
.related-card[data-part="5"] { --rc-color: var(--part-5); }
.related-card[data-part="0"] { --rc-color: var(--ink-3); }
.related-card .reason {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--rc-color);
    letter-spacing: 0.14em;
    font-weight: 600;
}
.related-card .label {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--ink-3);
    letter-spacing: 0.12em;
}
.related-card .title {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.3;
}
.related-card .sub {
    font-size: 12.5px;
    color: var(--ink-3);
    line-height: 1.5;
    margin-top: auto;
    padding-top: 6px;
}
@media (max-width: 700px) {
    .related-grid { grid-template-columns: 1fr; }
}

/* 章节底部 · 上一讲 / 下一讲 双卡片 */
.chapter-nav {
    margin: 80px 0 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.chapter-nav-card {
    padding: 28px 32px;
    background: linear-gradient(135deg, var(--bg-2), var(--bg-3));
    border-radius: var(--radius-md);
    display: block;
    transition: all .3s;
    border: 1px solid var(--line);
    min-height: 140px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.chapter-nav-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}
.chapter-nav-card.empty {
    opacity: 0.3;
    pointer-events: none;
    background: transparent;
    border-style: dashed;
}
.chapter-nav-card .label {
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--ink-3);
    letter-spacing: 0.18em;
    margin-bottom: 14px;
}
.chapter-nav-card .title {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.3;
    display: flex;
    align-items: center;
    gap: 12px;
}
.chapter-nav-card.prev .title { justify-content: flex-start; }
.chapter-nav-card.next .title { justify-content: flex-end; text-align: right; }
.chapter-nav-card .arrow {
    color: var(--accent);
    transition: transform .25s;
    font-size: 20px;
}
.chapter-nav-card.prev:hover .arrow { transform: translateX(-6px); }
.chapter-nav-card.next:hover .arrow { transform: translateX(6px); }

/* 旧 .next-chapter 兼容（暂不使用） */
.next-chapter { display: none; }

@media (max-width: 700px) {
    .chapter-nav { grid-template-columns: 1fr; }
}

/* ===========================================================
   FRAMEWORK · L1-L5 认知五阶交互组件
   =========================================================== */
.framework {
    margin: 2.5em 0;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 32px;
    box-shadow: var(--shadow-card);
}
.framework-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--line);
}
.framework-label {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-3);
    letter-spacing: 0.2em;
}
.framework-title {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--ink);
}
.framework-hint {
    font-size: 12px;
    color: var(--ink-3);
    font-family: var(--font-cn);
}

.ladder {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    position: relative;
}
.ladder-rung {
    display: grid;
    grid-template-columns: 60px 110px 1fr;
    gap: 20px;
    align-items: center;
    padding: 18px 20px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all .3s cubic-bezier(.2,.7,.3,1);
    margin-bottom: 4px;
    position: relative;
    overflow: hidden;
}
.ladder-rung::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 0;
    background: var(--rung-color);
    transition: width .3s;
    opacity: 0.18;
}
.ladder-rung:hover::before,
.ladder-rung.active::before {
    width: 100%;
}
.ladder-rung.active {
    transform: scale(1.01);
    box-shadow: var(--shadow-card);
}
.ladder-rung.l1 { --rung-color: #D9D6D0; --rung-ink: #6B665E; }
.ladder-rung.l2 { --rung-color: #C9A78D; --rung-ink: #7A5A40; }
.ladder-rung.l3 { --rung-color: #A65D4E; --rung-ink: #6B2D1F; }
.ladder-rung.l4 { --rung-color: #5C4A42; --rung-ink: #2F2521; }
.ladder-rung.l5 { --rung-color: #2A2520; --rung-ink: #FFFFFF; }

.rung-id {
    font-family: var(--font-mono);
    font-size: 28px;
    font-weight: 700;
    color: var(--rung-ink);
    text-align: center;
    position: relative;
    z-index: 1;
    opacity: 0.6;
    transition: opacity .25s;
}
.ladder-rung:hover .rung-id,
.ladder-rung.active .rung-id { opacity: 1; }

.rung-name {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    position: relative;
    z-index: 1;
}
.rung-name em {
    display: block;
    font-size: 12px;
    color: var(--ink-3);
    font-weight: 400;
    margin-top: 2px;
    font-style: normal;
    font-family: var(--font-cn);
}

.rung-detail {
    font-size: 14px;
    color: var(--ink-2);
    line-height: 1.6;
    position: relative;
    z-index: 1;
}
.rung-detail strong {
    color: var(--ink);
    font-weight: 600;
}
.rung-detail .case {
    display: block;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px dashed var(--line);
    font-size: 13px;
    color: var(--ink-3);
}
.rung-detail .case::before {
    content: "案例 / ";
    color: var(--accent);
    font-weight: 600;
}

/* ===========================================================
   HIGHLIGHTS · 选中段落 + 划线 + 批注
   =========================================================== */
.article-body p {
    cursor: text;
}
.article-body p mark.hl {
    background: linear-gradient(180deg, transparent 56%, var(--hl-bg, rgba(218, 165, 32, 0.36)) 56%);
    padding: 0 1px;
    border-radius: 2px;
    cursor: pointer;
    transition: background .15s;
}
.article-body p mark.hl:hover {
    background: linear-gradient(180deg, transparent 0%, var(--hl-bg, rgba(218, 165, 32, 0.36)) 0%);
}
.article-body p mark.hl[data-color="yellow"] { --hl-bg: rgba(245, 200, 90, 0.42); }
.article-body p mark.hl[data-color="rose"]   { --hl-bg: rgba(220, 140, 130, 0.38); }
.article-body p mark.hl[data-color="green"]  { --hl-bg: rgba(140, 190, 140, 0.40); }
.article-body p mark.hl[data-note]::after {
    content: "✎";
    margin-left: 2px;
    color: var(--accent);
    font-size: 11px;
    vertical-align: super;
}

.hl-toolbar {
    position: absolute;
    z-index: 100;
    display: flex;
    gap: 4px;
    padding: 6px;
    background: var(--ink);
    color: var(--bg);
    border-radius: var(--radius-xs);
    box-shadow: 0 8px 24px rgba(0,0,0,0.18);
    font-family: var(--font-cn);
    font-size: 12.5px;
    opacity: 0;
    transform: translateY(4px);
    pointer-events: none;
    transition: opacity .15s, transform .15s;
}
.hl-toolbar.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}
.hl-toolbar button {
    background: transparent;
    color: var(--bg);
    border: 0;
    padding: 5px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: background .15s;
}
.hl-toolbar button:hover { background: rgba(255,255,255,0.12); }
.hl-toolbar .swatch {
    width: 14px; height: 14px;
    border-radius: 50%;
    display: inline-block;
    border: 1px solid rgba(255,255,255,0.4);
}
.hl-toolbar .swatch.yellow { background: rgba(245, 200, 90, 0.85); }
.hl-toolbar .swatch.rose   { background: rgba(220, 140, 130, 0.85); }
.hl-toolbar .swatch.green  { background: rgba(140, 190, 140, 0.85); }
.hl-toolbar .sep {
    width: 1px;
    background: rgba(255,255,255,0.2);
    margin: 2px 4px;
}

.hl-note-popover {
    position: absolute;
    z-index: 110;
    width: 280px;
    padding: 14px 14px 12px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-soft);
    display: none;
}
.hl-note-popover.show { display: block; }
.hl-note-popover textarea {
    width: 100%;
    min-height: 84px;
    border: 1px solid var(--line);
    border-radius: var(--radius-xs);
    padding: 8px 10px;
    font-family: var(--font-cn);
    font-size: 14px;
    color: var(--ink);
    background: var(--bg);
    resize: vertical;
}
.hl-note-popover textarea:focus { outline: 1px solid var(--accent); }
.hl-note-popover-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 12px;
}
.hl-note-popover-actions button {
    border: 0;
    background: transparent;
    color: var(--ink-3);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    font-family: var(--font-cn);
    font-size: 12px;
}
.hl-note-popover-actions button:hover { color: var(--ink); }
.hl-note-popover-actions .save {
    color: var(--bg);
    background: var(--ink);
    padding: 5px 14px;
}
.hl-note-popover-actions .save:hover { background: var(--accent); color: var(--bg); }
.hl-note-popover-actions .delete { color: #c75c4f; }

/* My marks 汇总区 (首页) */
.my-marks-section {
    background: var(--bg-2);
    border-radius: var(--radius-md);
    padding: 28px 32px;
    margin-top: 32px;
}
.my-marks-empty {
    color: var(--ink-3);
    font-size: 14px;
    text-align: center;
    padding: 20px 0;
}
.my-marks-list {
    display: grid;
    gap: 10px;
}
.my-mark {
    display: grid;
    grid-template-columns: 90px 1fr auto;
    gap: 14px;
    align-items: start;
    padding: 12px 16px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-xs);
    text-decoration: none;
    color: inherit;
    transition: all .2s;
}
.my-mark:hover { border-color: var(--accent); transform: translateX(2px); }
.my-mark .ch {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-3);
    letter-spacing: 0.1em;
    padding-top: 2px;
}
.my-mark .ch strong { color: var(--accent); display: block; font-size: 13px; }
.my-mark .quote {
    font-family: var(--font-cn-serif);
    font-size: 14.5px;
    color: var(--ink);
    line-height: 1.55;
}
.my-mark .quote .note {
    display: block;
    margin-top: 4px;
    font-size: 12.5px;
    color: var(--ink-3);
    font-family: var(--font-cn);
}
.my-mark .quote .note::before { content: "✎ "; color: var(--accent); }
.my-mark .arr {
    color: var(--ink-3);
    font-size: 14px;
    padding-top: 2px;
}

/* ===========================================================
   FRAMEWORK GALLERY · 首页画廊
   =========================================================== */
.framework-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
}
.fw-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 18px 18px 16px;
    text-decoration: none;
    color: inherit;
    transition: all .25s;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    min-height: 140px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.fw-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--fw-color);
    opacity: 0;
    transition: opacity .25s;
}
.fw-card > * { position: relative; z-index: 1; }
.fw-card:hover {
    transform: translateY(-3px);
    border-color: var(--fw-color);
    box-shadow: var(--shadow-card);
}
.fw-card:hover::before { opacity: 0.06; }
.fw-card[data-part="0"] { --fw-color: var(--ink-3); }
.fw-card[data-part="1"] { --fw-color: var(--part-1); }
.fw-card[data-part="2"] { --fw-color: var(--part-2); }
.fw-card[data-part="3"] { --fw-color: var(--part-3); }
.fw-card[data-part="4"] { --fw-color: var(--part-4); }
.fw-card[data-part="5"] { --fw-color: var(--part-5); }

.fw-card-top {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 6px;
}
.fw-card-num {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--fw-color);
    letter-spacing: 0.18em;
    font-weight: 600;
}
.fw-card-ch {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--ink-4);
    letter-spacing: 0.1em;
}
.fw-card-title {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.3;
    margin-bottom: 4px;
}
.fw-card-sub {
    font-size: 12.5px;
    color: var(--ink-3);
    line-height: 1.5;
    margin-top: auto;
    padding-top: 8px;
    border-top: 1px dashed var(--line);
}

/* 过滤栏（按部） */
.fw-filter {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--line);
}
.fw-filter button {
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: 0.1em;
    padding: 6px 12px;
    border-radius: var(--radius-pill, 999px);
    border: 1px solid var(--line);
    background: transparent;
    color: var(--ink-2);
    cursor: pointer;
    transition: all .2s;
}
.fw-filter button:hover { border-color: var(--ink); color: var(--ink); }
.fw-filter button.active {
    background: var(--ink);
    color: var(--bg);
    border-color: var(--ink);
}

/* ===========================================================
   QUOTE WALL · 首页金句墙
   =========================================================== */
.quote-wall {
    margin-top: 8px;
}
.quote-wall-toolbar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 24px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--line);
}
.quote-chip {
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: 0.1em;
    padding: 7px 14px;
    border-radius: var(--radius-pill, 999px);
    border: 1px solid var(--line);
    background: transparent;
    color: var(--ink-2);
    cursor: pointer;
    transition: all .2s;
}
.quote-chip:hover { border-color: var(--ink); color: var(--ink); }
.quote-chip.active {
    background: var(--ink);
    color: var(--bg);
    border-color: var(--ink);
}
.quote-chip[data-part="1"].active { background: var(--part-1); border-color: var(--part-1); }
.quote-chip[data-part="2"].active { background: var(--part-2); border-color: var(--part-2); }
.quote-chip[data-part="3"].active { background: var(--part-3); border-color: var(--part-3); }
.quote-chip[data-part="4"].active { background: var(--part-4); border-color: var(--part-4); }
.quote-chip[data-part="5"].active { background: var(--part-5); border-color: var(--part-5); }

.quote-grid {
    columns: 3;
    column-gap: 16px;
}
.quote-card {
    break-inside: avoid;
    background: var(--qpart-wash, var(--surface));
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 22px 22px 18px;
    margin-bottom: 16px;
    cursor: pointer;
    transition: border-color .25s, box-shadow .25s, transform .25s;
    display: block;
    color: var(--ink);
    position: relative;
    overflow: hidden;
}
/* 去掉硬边框条，改用顶部细线作画框感 */
.quote-card::before {
    content: "";
    position: absolute;
    left: 20px; right: 20px; top: 0;
    height: 2px;
    background: var(--qpart-color);
    opacity: 0;
    border-radius: 0 0 2px 2px;
    transition: opacity .25s;
}
.quote-card:hover::before { opacity: 0.55; }

/* 每部颜色 + 底色渍 */
.quote-card { --qpart-color: var(--ink-3); --qpart-wash: var(--surface); }
.quote-card[data-part="1"] { --qpart-color: var(--part-1); --qpart-wash: var(--part-1-wash); }
.quote-card[data-part="2"] { --qpart-color: var(--part-2); --qpart-wash: var(--part-2-wash); }
.quote-card[data-part="3"] { --qpart-color: var(--part-3); --qpart-wash: var(--part-3-wash); }
.quote-card[data-part="4"] { --qpart-color: var(--part-4); --qpart-wash: var(--part-4-wash); }
.quote-card[data-part="5"] { --qpart-color: var(--part-5); --qpart-wash: var(--part-5-wash); }

.quote-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
    border-color: color-mix(in srgb, var(--qpart-color) 35%, var(--line));
}

/* 引号：中文书名号风格，开头大字装饰 + 末尾收口 */
.quote-card-text {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 17px;
    line-height: 1.68;
    color: var(--ink);
    margin-bottom: 16px;
    padding-top: 28px;
    position: relative;
}
/* 开头：大号装饰性左双引号 " */
.quote-card-text::before {
    content: "\201C";
    position: absolute;
    top: -4px;
    left: -2px;
    font-family: var(--font-cn-serif), 'Noto Serif SC', 'Songti SC', serif;
    font-size: 52px;
    font-weight: 400;
    line-height: 1;
    color: var(--qpart-color);
    opacity: 0.22;
    pointer-events: none;
}
/* 末尾：小号收口右双引号 " */
.quote-card-text::after {
    content: "\201D";
    font-family: var(--font-cn-serif), 'Noto Serif SC', 'Songti SC', serif;
    font-size: 1.1em;
    font-weight: 400;
    color: var(--qpart-color);
    opacity: 0.45;
    margin-left: 1px;
}

/* 底部 meta：章节号 neutral，部名有色 */
.quote-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-3);
    letter-spacing: 0.1em;
    padding-top: 12px;
    border-top: 1px solid var(--line);
}
.quote-card-meta .ch-num {
    color: var(--ink-3);
    font-weight: 400;
}
.quote-card-meta .ch-dot {
    color: var(--ink-4);
    margin: 0 3px;
}
.quote-card-meta .ch-part {
    color: var(--qpart-color);
    font-weight: 500;
    letter-spacing: 0.18em;
    opacity: 0.85;
}
/* 兼容旧 .ch 写法 */
.quote-card-meta .ch {
    color: var(--ink-3);
    font-weight: 400;
}
.quote-card-meta .arr {
    font-family: var(--font-cn);
    color: var(--ink-4);
    transition: transform .2s, color .2s;
    font-size: 12px;
}
.quote-card:hover .quote-card-meta .arr {
    color: var(--qpart-color);
    transform: translateX(3px);
}

@media (max-width: 1100px) {
    .quote-grid { columns: 2; }
}
@media (max-width: 700px) {
    .quote-grid { columns: 1; }
}

/* ===========================================================
   FRAMEWORK · 四代思维时间轴 (timeline)
   =========================================================== */
.timeline {
    margin-top: 8px;
}
.timeline-track {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    position: relative;
    padding: 0 0 28px;
}
.timeline-track::before {
    content: "";
    position: absolute;
    left: 6%; right: 6%;
    top: 32px;
    height: 2px;
    background: linear-gradient(90deg, #C9C2B4 0%, #C9A78D 33%, #8FA3A8 66%, #5C4A42 100%);
    z-index: 0;
}
.gen-node {
    display: flex; flex-direction: column; align-items: center;
    cursor: pointer;
    position: relative; z-index: 1;
    padding: 0 6px;
    transition: transform .25s;
}
.gen-node:hover { transform: translateY(-2px); }
.gen-dot {
    width: 64px; height: 64px;
    border-radius: 50%;
    background: var(--gen-color);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-mono);
    font-size: 14px; font-weight: 600;
    letter-spacing: 0.04em;
    box-shadow: 0 6px 18px rgba(68, 61, 54, 0.14);
    transition: transform .25s, box-shadow .25s;
}
.gen-node:hover .gen-dot,
.gen-node.active .gen-dot {
    transform: scale(1.08);
    box-shadow: 0 10px 28px rgba(68, 61, 54, 0.22);
}
.gen-label {
    margin-top: 12px;
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    text-align: center;
}
.gen-label em {
    display: block;
    font-size: 11.5px;
    font-style: normal;
    color: var(--ink-3);
    font-weight: 400;
    margin-top: 2px;
    font-family: var(--font-mono);
    letter-spacing: 0.1em;
}
.gen-node.g1 { --gen-color: #B5A88D; }
.gen-node.g2 { --gen-color: #A65D4E; }
.gen-node.g3 { --gen-color: #5C7A9C; }
.gen-node.g4 { --gen-color: #2A2520; }

.gen-detail {
    margin-top: 12px;
    padding: 22px 24px;
    background: var(--bg-2);
    border-left: 3px solid var(--gen-color, var(--accent));
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 14.5px;
    line-height: 1.7;
    color: var(--ink-2);
    display: none;
}
.gen-detail.show { display: block; }
.gen-detail .row {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 14px;
    padding: 6px 0;
    border-bottom: 1px dashed var(--line);
}
.gen-detail .row:last-child { border-bottom: none; }
.gen-detail .row .k {
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--ink-3);
    letter-spacing: 0.12em;
    padding-top: 2px;
}
.gen-detail .row .v { color: var(--ink); }

/* ===========================================================
   FRAMEWORK · 六大赋能宫格 (2×3 grid)
   =========================================================== */
.empowerments {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}
.emp-cell {
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 18px 18px 16px;
    cursor: pointer;
    transition: all .25s;
    position: relative;
    overflow: hidden;
}
.emp-cell::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--emp-color);
    opacity: 0;
    transition: opacity .25s;
    z-index: 0;
}
.emp-cell:hover::before { opacity: 0.06; }
.emp-cell.active::before { opacity: 0.10; }
.emp-cell.active { border-color: var(--emp-color); }
.emp-cell > * { position: relative; z-index: 1; }

.emp-cell.e1 { --emp-color: #A65D4E; }
.emp-cell.e2 { --emp-color: #6E9A6B; }
.emp-cell.e3 { --emp-color: #C9A78D; }
.emp-cell.e4 { --emp-color: #5C7A9C; }
.emp-cell.e5 { --emp-color: #8F7A5C; }
.emp-cell.e6 { --emp-color: #6E5C8F; }

.emp-id {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--emp-color);
    letter-spacing: 0.16em;
    font-weight: 600;
}
.emp-name {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--ink);
    margin: 6px 0 10px;
    line-height: 1.2;
}
.emp-shift {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--ink-3);
    letter-spacing: 0.04em;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.emp-shift .from { color: var(--ink-3); }
.emp-shift .arr { color: var(--emp-color); font-weight: 600; }
.emp-shift .to { color: var(--ink); font-weight: 600; }

.emp-detail {
    display: none;
    margin-top: 10px;
    padding-top: 12px;
    border-top: 1px dashed var(--line);
    font-size: 13.5px;
    color: var(--ink-2);
    line-height: 1.65;
}
.emp-cell.active .emp-detail { display: block; }

/* ===========================================================
   FRAMEWORK · 让渡 vs 坚守（第 31 讲，左右双栏 6 卡）
   =========================================================== */
.cede-keep {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
.ck-side {
    border-radius: var(--radius-sm);
    padding: 18px 18px 14px;
    border: 1px solid var(--side-border);
}
.ck-side.cede {
    --side-border: rgba(140, 130, 122, 0.36);
    --side-accent: #8C826F;
    background: linear-gradient(160deg, rgba(214, 209, 198, 0.30), rgba(232, 228, 218, 0.15));
}
.ck-side.keep {
    --side-border: rgba(166, 93, 78, 0.40);
    --side-accent: #A65D4E;
    background: linear-gradient(160deg, rgba(166, 93, 78, 0.12), rgba(143, 122, 92, 0.06));
}
.ck-head {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--side-accent);
    letter-spacing: 0.18em;
    font-weight: 600;
    margin-bottom: 4px;
}
.ck-title {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px dashed var(--side-border);
}
.ck-item {
    padding: 10px 0;
    border-bottom: 1px dashed rgba(150, 140, 122, 0.18);
}
.ck-item:last-child { border-bottom: none; }
.ck-item .h {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 15.5px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 3px;
}
.ck-item .d {
    font-size: 13px;
    color: var(--ink-2);
    line-height: 1.55;
}
@media (max-width: 700px) {
    .cede-keep { grid-template-columns: 1fr; }
}

/* ===========================================================
   FRAMEWORK · 金字塔（智能资本三层 · 第 36 讲）
   =========================================================== */
.pyramid-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: center;
}
.pyramid-svg svg { width: 100%; max-width: 360px; display: block; margin: 0 auto; }
.pyramid-tier { fill: var(--tier-color); transition: opacity .2s; cursor: pointer; }
.pyramid-tier:hover { opacity: 0.85; }
.pyramid-tier.t1 { --tier-color: #2A2520; }
.pyramid-tier.t2 { --tier-color: #8F7A5C; }
.pyramid-tier.t3 { --tier-color: #C9C2B4; }
.pyramid-label {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 13px;
    font-weight: 600;
    fill: #fff;
    pointer-events: none;
}
.pyramid-label.t3 { fill: var(--ink); }
.pyramid-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.pyramid-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-left: 4px solid var(--pi-color);
    border-radius: var(--radius-xs);
    padding: 12px 16px;
    cursor: pointer;
    transition: all .2s;
}
.pyramid-item.t1 { --pi-color: #2A2520; }
.pyramid-item.t2 { --pi-color: #8F7A5C; }
.pyramid-item.t3 { --pi-color: #B5A88D; }
.pyramid-item:hover { background: var(--bg-2); }
.pyramid-item .lvl {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--pi-color);
    letter-spacing: 0.18em;
    font-weight: 600;
}
.pyramid-item .name {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin: 2px 0 6px;
}
.pyramid-item .desc {
    font-size: 13px;
    color: var(--ink-2);
    line-height: 1.55;
}
@media (max-width: 700px) {
    .pyramid-wrap { grid-template-columns: 1fr; }
}

/* ===========================================================
   FRAMEWORK · 系统 1 ↔ 系统 2（第 21 讲，复用 dichotomy 但配色不同）
   =========================================================== */
.dicho-side.system-1 {
    --side-bg: linear-gradient(160deg, rgba(166, 93, 78, 0.14), rgba(216, 158, 130, 0.08));
    --side-border: rgba(166, 93, 78, 0.36);
    --side-accent: #A65D4E;
}
.dicho-side.system-2 {
    --side-bg: linear-gradient(160deg, rgba(92, 122, 156, 0.14), rgba(110, 138, 170, 0.06));
    --side-border: rgba(92, 122, 156, 0.40);
    --side-accent: #4F6B8F;
}

/* ===========================================================
   FRAMEWORK · 三圈层（同心圆 · 第 6 讲）
   =========================================================== */
.rings-wrap {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 32px;
    align-items: center;
}
.rings-svg svg { width: 100%; max-width: 320px; }
.rings-svg .ring {
    fill: var(--ring-fill);
    stroke: var(--ring-stroke);
    stroke-width: 1.5;
    cursor: pointer;
    transition: opacity .2s;
}
.rings-svg .ring:hover { opacity: 0.85; }
.rings-svg .ring.r1 { --ring-fill: rgba(166, 93, 78, 0.20); --ring-stroke: #A65D4E; }
.rings-svg .ring.r2 { --ring-fill: rgba(143, 122, 92, 0.18); --ring-stroke: #8F7A5C; }
.rings-svg .ring.r3 { --ring-fill: rgba(92, 122, 110, 0.16); --ring-stroke: #5C7A6E; }
.rings-svg .ring-label {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 14px;
    fill: var(--ink);
    font-weight: 600;
    pointer-events: none;
}
.rings-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.ring-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-left: 4px solid var(--rl-color);
    border-radius: var(--radius-xs);
    padding: 14px 18px;
    cursor: pointer;
    transition: all .2s;
}
.ring-item.r1 { --rl-color: #A65D4E; }
.ring-item.r2 { --rl-color: #8F7A5C; }
.ring-item.r3 { --rl-color: #5C7A6E; }
.ring-item:hover, .ring-item.active { background: var(--bg-2); }
.ring-item .head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 6px;
}
.ring-item .id {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--rl-color);
    letter-spacing: 0.18em;
    font-weight: 600;
}
.ring-item .status {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--ink-3);
    letter-spacing: 0.12em;
}
.ring-item .name {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 4px;
}
.ring-item .desc {
    font-size: 13.5px;
    color: var(--ink-2);
    line-height: 1.55;
}
@media (max-width: 700px) {
    .rings-wrap { grid-template-columns: 1fr; }
}

/* ===========================================================
   FRAMEWORK · 三步流程（认知组装能力 · 第 16 讲）
   =========================================================== */
.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    position: relative;
}
.steps::before {
    content: "";
    position: absolute;
    top: 24px;
    left: 6%;
    right: 6%;
    height: 2px;
    background: linear-gradient(90deg, #A65D4E 0%, #8F7A5C 50%, #5C7A6E 100%);
    z-index: 0;
}
.step-cell {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 18px 18px 16px;
    position: relative;
    z-index: 1;
    transition: all .2s;
    cursor: pointer;
}
.step-cell:hover { transform: translateY(-2px); border-color: var(--st-color); }
.step-cell .num {
    width: 48px; height: 48px;
    border-radius: 50%;
    background: var(--st-color);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 700;
    margin: 0 auto 12px;
}
.step-cell.s1 { --st-color: #A65D4E; }
.step-cell.s2 { --st-color: #8F7A5C; }
.step-cell.s3 { --st-color: #5C7A6E; }
.step-cell .name {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    text-align: center;
    margin-bottom: 6px;
}
.step-cell .verb {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--st-color);
    letter-spacing: 0.18em;
    text-align: center;
    margin-bottom: 10px;
}
.step-cell .desc {
    font-size: 13px;
    color: var(--ink-2);
    line-height: 1.6;
}
@media (max-width: 700px) {
    .steps { grid-template-columns: 1fr; }
    .steps::before { display: none; }
}

/* ===========================================================
   FRAMEWORK · 三大永恒护城河（第 17 讲）
   =========================================================== */
.moats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}
.moat {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 22px 22px 18px;
    transition: all .25s;
    border-top: 4px solid var(--mt-color);
}
.moat.m1 { --mt-color: #A65D4E; }
.moat.m2 { --mt-color: #8F6A5F; }
.moat.m3 { --mt-color: #6E5C8F; }
.moat:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
}
.moat .id {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--mt-color);
    letter-spacing: 0.18em;
    font-weight: 600;
    margin-bottom: 4px;
}
.moat .name {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 12px;
}
.moat .vs {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 12px;
}
.moat .vs > div {
    font-size: 13px;
    line-height: 1.5;
    padding: 8px 10px;
    border-radius: var(--radius-xs);
}
.moat .vs .crack {
    background: rgba(140, 130, 122, 0.10);
    color: var(--ink-3);
    text-decoration: line-through;
    text-decoration-color: var(--mt-color);
    text-decoration-thickness: 1.5px;
}
.moat .vs .crack::before { content: "✗ 误区 · "; font-family: var(--font-mono); font-size: 10.5px; color: var(--ink-3); letter-spacing: 0.1em; text-decoration: none; display: block; margin-bottom: 2px; }
.moat .vs .deep {
    background: var(--bg-2);
    color: var(--ink);
}
.moat .vs .deep::before { content: "✓ 真锚点 · "; font-family: var(--font-mono); font-size: 10.5px; color: var(--mt-color); letter-spacing: 0.1em; font-weight: 600; display: block; margin-bottom: 2px; }
@media (max-width: 700px) {
    .moats { grid-template-columns: 1fr; }
}

/* 三次解放时间轴：复用 four-generations 的 timeline，但只有 3 个 node */
.three-liberations .timeline-track { grid-template-columns: repeat(3, 1fr); }
.three-liberations .gen-node.lib1 { --gen-color: #8F7A5C; }
.three-liberations .gen-node.lib2 { --gen-color: #5C7A9C; }
.three-liberations .gen-node.lib3 { --gen-color: #A65D4E; }

/* ===========================================================
   FRAMEWORK · 六道鸿沟（人 vs AI 对照表）
   =========================================================== */
.gaps-table {
    display: grid;
    grid-template-columns: 1fr 100px 1fr;
    gap: 0;
    border-top: 1px solid var(--line);
}
.gaps-row {
    display: contents;
}
.gaps-row > div {
    padding: 16px 18px;
    border-bottom: 1px solid var(--line);
    transition: background .2s;
}
.gaps-row:hover > div {
    background: var(--bg-2);
}
.gaps-side-human {
    text-align: right;
    font-family: var(--font-cn-serif), var(--font-serif);
}
.gaps-side-ai {
    text-align: left;
    font-family: var(--font-cn-serif), var(--font-serif);
}
.gaps-side-human .label,
.gaps-side-ai .label {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.3;
}
.gaps-side-human .label { color: #6E5C8F; }
.gaps-side-ai .label { color: #5C7A9C; }
.gaps-side-human .hint,
.gaps-side-ai .hint {
    font-size: 12.5px;
    color: var(--ink-3);
    margin-top: 4px;
    line-height: 1.5;
    font-family: var(--font-cn);
}
.gaps-vs {
    text-align: center;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--ink-3);
    font-weight: 600;
    border-left: 1px solid var(--line);
    border-right: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
}
.gaps-vs .id {
    background: var(--ink);
    color: var(--bg);
    width: 28px; height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
}
.gaps-head {
    display: contents;
}
.gaps-head > div {
    padding: 12px 18px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-3);
    letter-spacing: 0.18em;
    background: var(--bg-2);
    border-bottom: 1px solid var(--line);
}
.gaps-head .human { text-align: right; color: #6E5C8F; font-weight: 600; }
.gaps-head .ai { text-align: left; color: #5C7A9C; font-weight: 600; }
.gaps-head .vs { text-align: center; }

@media (max-width: 640px) {
    .gaps-table { grid-template-columns: 1fr; }
    .gaps-side-human, .gaps-side-ai { text-align: left; }
    .gaps-vs { display: none; }
    .gaps-row > div { padding: 10px 16px; border-bottom: 0; }
    .gaps-row {
        display: block;
        padding-bottom: 12px;
        border-bottom: 1px solid var(--line);
    }
}

/* ===========================================================
   FRAMEWORK · 六大战场（人 / AI 分工建议）
   =========================================================== */
.battlefields {
    display: grid;
    gap: 12px;
}
.battlefield {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 18px 22px 16px;
    cursor: pointer;
    transition: all .25s;
}
.battlefield:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-card);
}
.battlefield-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 6px;
}
.battlefield-head .id {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 0.16em;
    font-weight: 600;
}
.battlefield-head .name {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.3;
}
.battlefield-bar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    margin: 10px 0 8px;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--line);
}
.battlefield-bar > div {
    padding: 8px 12px;
    font-size: 13px;
    color: var(--ink-2);
    line-height: 1.5;
}
.battlefield-bar .ai-side {
    background: rgba(92, 122, 156, 0.08);
    border-right: 1px solid var(--line);
}
.battlefield-bar .ai-side::before { content: "AI · "; color: #5C7A9C; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; }
.battlefield-bar .human-side {
    background: rgba(110, 92, 143, 0.08);
}
.battlefield-bar .human-side::before { content: "人类 · "; color: #6E5C8F; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; }
.battlefield-rule {
    font-size: 13px;
    color: var(--ink-2);
    line-height: 1.6;
    padding-top: 8px;
    border-top: 1px dashed var(--line);
}
.battlefield-rule::before {
    content: "分工 / ";
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    font-weight: 600;
}

@media (max-width: 600px) {
    .battlefield-bar { grid-template-columns: 1fr; }
    .battlefield-bar .ai-side { border-right: 0; border-bottom: 1px solid var(--line); }
}

/* ===========================================================
   FRAMEWORK · 四大意义来源
   =========================================================== */
.meanings {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}
.meaning-cell {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 22px 22px 20px;
    transition: all .25s;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}
.meaning-cell::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--m-color);
    opacity: 0;
    transition: opacity .25s;
}
.meaning-cell:hover::before { opacity: 0.08; }
.meaning-cell > * { position: relative; z-index: 1; }
.meaning-cell.m1 { --m-color: #A65D4E; }
.meaning-cell.m2 { --m-color: #8F7A5C; }
.meaning-cell.m3 { --m-color: #5C7A6E; }
.meaning-cell.m4 { --m-color: #6E5C8F; }

.meaning-cell .icon {
    font-size: 28px;
    margin-bottom: 8px;
    line-height: 1;
}
.meaning-cell .id {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--m-color);
    letter-spacing: 0.16em;
    font-weight: 600;
    margin-bottom: 4px;
}
.meaning-cell .name {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 4px;
}
.meaning-cell .one-line {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 14.5px;
    color: var(--ink-2);
    line-height: 1.55;
    margin-bottom: 10px;
}
.meaning-cell .ask {
    font-size: 12.5px;
    color: var(--ink-3);
    font-style: italic;
    padding-top: 8px;
    border-top: 1px dashed var(--line);
}

@media (max-width: 600px) {
    .meanings { grid-template-columns: 1fr; }
}

/* ===========================================================
   FRAMEWORK · 三大透镜 (Venn 圆叠加)
   =========================================================== */
.lenses-wrap { padding: 8px 0; }
.lenses-venn {
    position: relative;
    height: 220px;
    margin-bottom: 24px;
}
.lens-circle {
    position: absolute;
    width: 180px; height: 180px;
    border-radius: 50%;
    mix-blend-mode: multiply;
    transition: opacity .25s, transform .25s;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
}
[data-theme="dark"] .lens-circle { mix-blend-mode: screen; color: var(--bg); }
.lens-circle.l1 { background: rgba(166, 93, 78, 0.45); left: calc(50% - 240px); top: 20px; }
.lens-circle.l2 { background: rgba(143, 122, 92, 0.45); left: calc(50% - 90px);  top: 20px; }
.lens-circle.l3 { background: rgba(92, 122, 110, 0.45); left: calc(50% + 60px);  top: 20px; }
.lens-circle:hover, .lens-circle.active { transform: scale(1.06); z-index: 2; }
.lens-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}
.lens-card {
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 18px 18px 16px;
    cursor: pointer;
    transition: all .25s;
}
.lens-card.l1 { --lens-color: #A65D4E; }
.lens-card.l2 { --lens-color: #8F7A5C; }
.lens-card.l3 { --lens-color: #5C7A6E; }
.lens-card:hover, .lens-card.active {
    border-color: var(--lens-color);
    box-shadow: 0 6px 18px rgba(0,0,0,0.06);
}
.lens-card .id {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--lens-color);
    letter-spacing: 0.16em;
    margin-bottom: 6px;
    font-weight: 600;
}
.lens-card .name {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
}
.lens-card .desc {
    font-size: 13.5px;
    color: var(--ink-2);
    line-height: 1.6;
}
@media (max-width: 700px) {
    .lenses-venn { height: auto; display: none; }
    .lens-cards { grid-template-columns: 1fr; }
}

/* ===========================================================
   FRAMEWORK · 四类主体矩阵 (2×2)
   =========================================================== */
.arche-matrix {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    position: relative;
    padding: 32px 0 0 32px;
}
.arche-matrix::before, .arche-matrix::after {
    position: absolute;
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--ink-3);
    letter-spacing: 0.18em;
}
.arche-matrix::before {
    content: "↑  外部驱动力 / 网络效应";
    top: 8px; left: 32px;
}
.arche-matrix::after {
    content: "内在能力 / 资产积累 →";
    top: 50%;
    left: 0;
    transform: rotate(-90deg) translate(-50%, -100%);
    transform-origin: top left;
}
.arche-cell {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 20px 20px 18px;
    cursor: pointer;
    transition: all .25s;
    position: relative;
    overflow: hidden;
}
.arche-cell::before {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 36px; height: 36px;
    background: var(--arche-color);
    opacity: 0.18;
    border-radius: 0 0 var(--radius-sm) 0;
}
.arche-cell.a1 { --arche-color: #5C7A9C; }
.arche-cell.a2 { --arche-color: #A65D4E; }
.arche-cell.a3 { --arche-color: #8F7A5C; }
.arche-cell.a4 { --arche-color: #6E5C8F; }
.arche-cell:hover { transform: translateY(-2px); border-color: var(--arche-color); box-shadow: var(--shadow-card); }
.arche-cell .quad {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--arche-color);
    letter-spacing: 0.14em;
    font-weight: 600;
    position: relative;
    z-index: 1;
}
.arche-cell .name {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--ink);
    margin: 4px 0 10px;
}
.arche-cell .one-line {
    font-size: 13.5px;
    color: var(--ink-2);
    line-height: 1.55;
    margin-bottom: 10px;
}
.arche-cell .case {
    font-size: 12.5px;
    color: var(--ink-3);
    padding-top: 8px;
    border-top: 1px dashed var(--line);
}
.arche-cell .case::before { content: "例 / "; color: var(--arche-color); font-weight: 600; }
@media (max-width: 600px) {
    .arche-matrix { grid-template-columns: 1fr; padding: 24px 0 0; }
    .arche-matrix::before, .arche-matrix::after { display: none; }
}

/* ===========================================================
   FRAMEWORK · 机会罗盘 (4 维度)
   =========================================================== */
.compass-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    align-items: center;
}
.compass-graphic {
    position: relative;
    aspect-ratio: 1;
    max-width: 320px;
    margin: 0 auto;
}
.compass-graphic svg { width: 100%; height: 100%; }
.compass-axis {
    fill: none;
    stroke: var(--line-2);
    stroke-width: 1;
}
.compass-poly {
    fill: rgba(166, 93, 78, 0.16);
    stroke: var(--accent);
    stroke-width: 2;
    stroke-linejoin: round;
}
.compass-label {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 13px;
    fill: var(--ink-2);
    font-weight: 600;
}
.compass-dot { fill: var(--accent); }
.compass-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.compass-item {
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-left: 3px solid var(--dim-color);
    border-radius: var(--radius-xs);
    padding: 12px 14px 10px;
    cursor: pointer;
    transition: all .2s;
}
.compass-item.d1 { --dim-color: #A65D4E; }
.compass-item.d2 { --dim-color: #8F7A5C; }
.compass-item.d3 { --dim-color: #5C7A6E; }
.compass-item.d4 { --dim-color: #5C7A9C; }
.compass-item:hover { background: var(--surface); }
.compass-item.active { background: var(--surface); }
.compass-item .name {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    display: flex;
    align-items: center;
    gap: 8px;
}
.compass-item .name .id {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--dim-color);
    letter-spacing: 0.16em;
}
.compass-item .ask {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 13.5px;
    color: var(--ink-2);
    margin-top: 4px;
    line-height: 1.5;
}
@media (max-width: 700px) {
    .compass-wrap { grid-template-columns: 1fr; }
}

/* ===========================================================
   FRAMEWORK · 时钟↔花园 对照 (split)
   =========================================================== */
.dichotomy {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-top: 8px;
}
.dicho-side {
    border-radius: var(--radius-sm);
    padding: 22px 22px 20px;
    background: var(--side-bg);
    border: 1px solid var(--side-border);
    position: relative;
}
.dicho-side.clock {
    --side-bg: linear-gradient(160deg, rgba(214, 209, 198, 0.6), rgba(232, 228, 218, 0.4));
    --side-border: rgba(150, 140, 122, 0.4);
    --side-accent: #5C5147;
}
.dicho-side.garden {
    --side-bg: linear-gradient(160deg, rgba(196, 224, 196, 0.36), rgba(232, 240, 224, 0.36));
    --side-border: rgba(110, 154, 107, 0.4);
    --side-accent: #557851;
}
.dicho-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--side-border);
}
.dicho-icon {
    font-size: 28px;
    line-height: 1;
}
.dicho-title {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--side-accent);
}
.dicho-era {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--side-accent);
    letter-spacing: 0.18em;
    opacity: 0.8;
}
.dicho-section-label {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--ink-3);
    letter-spacing: 0.16em;
    margin: 14px 0 6px;
}
.dicho-items {
    list-style: none;
    padding: 0;
    margin: 0;
}
.dicho-items li {
    font-size: 13.5px;
    color: var(--ink-2);
    line-height: 1.55;
    padding: 6px 0;
    padding-left: 18px;
    position: relative;
    border-bottom: 1px dashed rgba(150, 140, 122, 0.2);
}
.dicho-items li:last-child { border-bottom: none; }
.dicho-items li::before {
    content: "";
    position: absolute;
    left: 4px; top: 14px;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--side-accent);
    opacity: 0.6;
}
.dicho-items li strong {
    color: var(--ink);
    font-weight: 600;
    display: block;
    margin-bottom: 2px;
}

/* ===========================================================
   FOOTER
   =========================================================== */
.foot {
    border-top: 1px solid var(--line);
    padding: 50px var(--gutter);
    max-width: var(--max);
    margin: 80px auto 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    color: var(--ink-3);
    font-size: 13px;
}
.foot a:hover { color: var(--accent); }
.foot-meta {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.16em;
}

/* ===========================================================
   READING META · 字数 / 时长徽章
   =========================================================== */
.reading-meta {
    display: flex;
    gap: 16px;
    align-items: center;
    margin-bottom: 22px;
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--ink-3);
    letter-spacing: 0.1em;
    flex-wrap: wrap;
}
.reading-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.reading-meta-item strong { color: var(--ink-2); font-weight: 600; font-size: 12.5px; }
.reading-meta .sep { width: 4px; height: 4px; background: var(--line-2); border-radius: 50%; }

/* ===========================================================
   SEARCH · 全文搜索浮层
   =========================================================== */
.search-modal {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding: 80px 24px 40px;
}
.search-modal.open { display: flex; }
.search-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(28, 26, 24, 0.32);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.search-panel {
    position: relative;
    width: 100%;
    max-width: 720px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    box-shadow: 0 30px 100px rgba(0, 0, 0, 0.18);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 120px);
}
.search-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 22px;
    border-bottom: 1px solid var(--line);
}
.search-icon {
    font-size: 20px;
    color: var(--ink-3);
}
.search-input {
    flex: 1;
    border: 0;
    background: transparent;
    font-family: var(--font-cn), var(--font-sans);
    font-size: 17px;
    color: var(--ink);
    outline: none;
    padding: 4px 0;
}
.search-input::placeholder { color: var(--ink-4); }
.search-esc {
    background: var(--bg-2);
    border: 1px solid var(--line);
    color: var(--ink-3);
    padding: 3px 9px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    cursor: pointer;
}
.search-results {
    overflow-y: auto;
    padding: 4px 0;
    flex: 1;
}
.search-results::-webkit-scrollbar { width: 6px; }
.search-results::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 3px; }
.search-result {
    display: block;
    padding: 11px 22px;
    cursor: pointer;
    border-left: 3px solid transparent;
    transition: background .15s, border-color .15s;
    text-decoration: none;
    color: inherit;
}
.search-result.active,
.search-result:hover {
    background: var(--bg-2);
    border-left-color: var(--part-color, var(--accent));
}
.search-result em {
    background: var(--accent-soft);
    color: var(--accent);
    font-style: normal;
    font-weight: 600;
    padding: 0 1px;
    border-radius: 2px;
}
.search-result-title { padding-top: 14px; padding-bottom: 6px; }
.search-result-title-text {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
}
.search-result-meta {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--ink-3);
    letter-spacing: 0.18em;
    margin-bottom: 4px;
}
.search-result-meta .ch-tag {
    color: var(--part-color, var(--accent));
    font-weight: 600;
}
.search-result-snippet {
    padding-top: 4px;
    padding-bottom: 11px;
    padding-left: 38px;
    display: grid;
    grid-template-columns: 50px 1fr;
    gap: 12px;
    align-items: start;
}
.search-result-snippet-kind {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--ink-4);
    letter-spacing: 0.14em;
    padding-top: 4px;
}
.search-result-snippet-text {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 14.5px;
    color: var(--ink-2);
    line-height: 1.6;
}
.search-empty {
    padding: 40px 22px;
    text-align: center;
    color: var(--ink-3);
    font-size: 14px;
}
.search-foot {
    border-top: 1px solid var(--line);
    padding: 10px 22px;
    display: flex;
    gap: 18px;
    align-items: center;
    flex-wrap: wrap;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-3);
    letter-spacing: 0.06em;
}
.search-foot kbd {
    background: var(--bg-2);
    border: 1px solid var(--line);
    padding: 1px 6px;
    border-radius: 3px;
    margin-right: 4px;
    font-family: var(--font-mono);
    font-size: 10.5px;
}
.search-foot-stat {
    margin-left: auto;
    color: var(--ink-4);
}
.search-suggest-group {
    padding: 18px 22px 14px;
}
.search-suggest-label {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--ink-3);
    letter-spacing: 0.16em;
    margin-bottom: 12px;
}
.search-suggest-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.search-suggest-chip {
    background: var(--bg-2);
    border: 1px solid var(--line);
    color: var(--ink-2);
    padding: 6px 12px;
    border-radius: var(--radius-pill, 999px);
    font-family: var(--font-cn), var(--font-sans);
    font-size: 13px;
    cursor: pointer;
    transition: all .2s;
}
.search-suggest-chip:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* 导航栏触发按钮 */
.nav-search {
    background: var(--bg-2);
    border: 1px solid var(--line);
    color: var(--ink-3);
    border-radius: var(--radius-xs);
    padding: 6px 12px 6px 10px;
    font-size: 12.5px;
    font-family: var(--font-cn);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all .2s;
}
.nav-search:hover {
    border-color: var(--ink);
    color: var(--ink);
}
.nav-search .icon { font-size: 13px; color: var(--ink-3); }
.nav-search kbd {
    background: var(--surface);
    border: 1px solid var(--line);
    padding: 1px 5px;
    border-radius: 3px;
    margin-left: 4px;
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--ink-3);
}
@media (max-width: 800px) {
    .nav-search kbd { display: none; }
    .nav-search { padding: 6px 10px; }
}
[data-theme="dark"] .search-panel { background: var(--surface); }
[data-theme="dark"] .search-backdrop { background: rgba(0,0,0,0.5); }

/* ===========================================================
   AUDIO · 章节朗读
   =========================================================== */
.audio-card {
    margin: 18px 0 0;
    padding: 14px 16px;
    background: linear-gradient(105deg, var(--bg-2), var(--bg-3));
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 14px;
}
.audio-card .icon {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--ink);
    color: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 14px;
}
.audio-card .meta {
    flex: 1; min-width: 0;
}
.audio-card .meta .label {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--ink-3);
    letter-spacing: 0.18em;
}
.audio-card .meta .desc {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 14.5px;
    color: var(--ink);
    margin-top: 2px;
}
.audio-card audio {
    width: 240px;
    height: 32px;
    flex-shrink: 0;
}
@media (max-width: 700px) {
    .audio-card { flex-wrap: wrap; }
    .audio-card audio { width: 100%; margin-top: 8px; }
}

/* ===========================================================
   READING TOOLS · 字体调节 / 复制链接 / 浮动小条
   =========================================================== */
.reading-tools {
    display: flex;
    gap: 6px;
    align-items: center;
    margin-bottom: 22px;
    flex-wrap: wrap;
}
.reading-tool {
    background: var(--bg-2);
    border: 1px solid var(--line);
    color: var(--ink-2);
    padding: 5px 11px;
    border-radius: var(--radius-xs);
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: 0.06em;
    cursor: pointer;
    transition: all .2s;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.reading-tool:hover { border-color: var(--ink); color: var(--ink); }
.reading-tool.active { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.reading-tool-group {
    display: inline-flex;
    border: 1px solid var(--line);
    border-radius: var(--radius-xs);
    overflow: hidden;
}
.reading-tool-group .reading-tool {
    border: 0;
    border-radius: 0;
    background: transparent;
    padding: 5px 10px;
}
.reading-tool-group .reading-tool + .reading-tool { border-left: 1px solid var(--line); }
.reading-tool-group .reading-tool.active { background: var(--ink); color: var(--bg); }

/* 字体大小三档（写在 :root，由 JS 切 .text-size-x） */
[data-text-size="s"] .article-body { font-size: 15.5px; line-height: 1.78; }
[data-text-size="m"] .article-body { font-size: 17.5px; line-height: 1.85; }
[data-text-size="l"] .article-body { font-size: 19.5px; line-height: 1.92; }

/* 顶部 toast */
.toast {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(-12px);
    background: var(--ink);
    color: var(--bg);
    padding: 8px 16px;
    border-radius: var(--radius-pill, 999px);
    font-size: 13px;
    font-family: var(--font-cn);
    z-index: 200;
    opacity: 0;
    transition: opacity .25s, transform .25s;
    pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* H2/H3 旁的 # 锚点 */
.article-body h2 a.anchor,
.article-body h3 a.anchor,
.article-body h4 a.anchor {
    margin-left: 10px;
    color: var(--ink-4);
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 400;
    opacity: 0;
    transition: opacity .2s, color .2s;
    text-decoration: none;
}
.article-body h2:hover a.anchor,
.article-body h3:hover a.anchor,
.article-body h4:hover a.anchor { opacity: 1; }
.article-body h2 a.anchor:hover,
.article-body h3 a.anchor:hover,
.article-body h4 a.anchor:hover { color: var(--accent); }

/* 章节阅读完成 ✓ 标记（现在在 .ch-title::after 里统一处理） */

/* 键盘提示 */
.kbd-hint {
    position: fixed;
    right: 18px;
    bottom: 22px;
    z-index: 50;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-3);
    background: var(--surface);
    border: 1px solid var(--line);
    padding: 6px 12px;
    border-radius: var(--radius-pill, 999px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    opacity: 0;
    transition: opacity .25s;
    pointer-events: none;
    letter-spacing: 0.06em;
}
.kbd-hint kbd {
    background: var(--bg-2);
    border: 1px solid var(--line);
    padding: 1px 6px;
    border-radius: 3px;
    margin: 0 2px;
    font-family: var(--font-mono);
}
.article:hover ~ .kbd-hint { opacity: 0.9; }
@media (max-width: 1100px) { .kbd-hint { display: none; } }

/* ===========================================================
   READER FAB · 浮动抽屉按钮 (≤1100px 才显示)
   =========================================================== */
.reader-fab {
    display: none;
    position: fixed;
    right: 18px;
    bottom: 22px;
    z-index: 90;
    width: 52px; height: 52px;
    border-radius: 50%;
    background: var(--ink);
    color: var(--bg);
    border: 0;
    cursor: pointer;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.04em;
    transition: transform .2s, background .2s;
}
.reader-fab:hover { transform: translateY(-2px); background: var(--accent); }
.reader-fab .dot {
    position: absolute;
    top: 8px; right: 8px;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent);
}
.reader-fab[data-open="true"] .dot { display: none; }

.reader-drawer {
    position: fixed;
    inset: 0;
    background: var(--bg);
    z-index: 80;
    transform: translateY(100%);
    transition: transform .35s cubic-bezier(.2,.7,.3,1);
    overflow-y: auto;
    padding: 70px 24px 110px;
}
.reader-drawer.open { transform: translateY(0); }
.reader-drawer-head {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--line);
}
.reader-drawer-head .label {
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--ink-3);
    letter-spacing: 0.18em;
}
.reader-drawer-head .title {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 26px;
    font-weight: 600;
    color: var(--ink);
    margin-top: 6px;
    line-height: 1.2;
}
.reader-drawer-section {
    margin-bottom: 30px;
}
.reader-drawer-section h4 {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-3);
    letter-spacing: 0.18em;
    margin-bottom: 12px;
    font-weight: 600;
}
.reader-drawer .toc-item {
    display: block;
    padding: 10px 0 10px 16px;
    font-size: 14.5px;
    color: var(--ink-2);
    border-left: 2px solid transparent;
    line-height: 1.45;
}
.reader-drawer .toc-item.active {
    color: var(--accent);
    border-left-color: var(--accent);
    font-weight: 500;
}
.reader-drawer .toc-item.lv3 { padding-left: 30px; font-size: 13.5px; }
.reader-drawer .toc-item.lv4 { padding-left: 44px; font-size: 13px; }
.reader-drawer .drawer-quote {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 17px;
    line-height: 1.6;
    color: var(--ink);
    border-left: 3px solid var(--accent);
    padding: 4px 0 4px 14px;
}
.reader-drawer .drawer-frame-card {
    background: var(--bg-2);
    padding: 14px 16px;
    border-radius: var(--radius-sm);
}
.reader-drawer .drawer-frame-card .name {
    font-family: var(--font-cn-serif), var(--font-serif);
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 4px;
}
.reader-drawer .drawer-frame-card .sub {
    font-size: 12.5px;
    color: var(--ink-3);
    margin-bottom: 10px;
}
.reader-drawer .drawer-frame-card .open-link {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 0.1em;
}
.reader-drawer .drawer-close {
    position: absolute;
    top: 16px; right: 18px;
    background: transparent;
    border: 1px solid var(--line);
    color: var(--ink-2);
    border-radius: var(--radius-xs);
    padding: 6px 14px;
    font-family: var(--font-cn);
    font-size: 13px;
    cursor: pointer;
}
.reader-drawer .drawer-close:hover { border-color: var(--ink); color: var(--ink); }

/* ===========================================================
   PRINT · 打印/导出 PDF 样式
   =========================================================== */
@media print {
    @page {
        size: A4;
        margin: 16mm 18mm;
    }
    /* 隐藏所有交互元素 */
    .nav,
    .progress,
    .reader-fab,
    .reader-drawer,
    .toc,
    .aside,
    .reading-tools,
    .chapter-nav,
    .audio-card,
    .next-chapter,
    .kbd-hint,
    .foot,
    .toast,
    .hl-toolbar,
    .hl-note-popover,
    .search-modal {
        display: none !important;
    }

    body {
        background: #fff !important;
        color: #000 !important;
        font-family: 'Songti SC', 'STSong', 'Source Serif 4', serif !important;
    }
    .reader {
        display: block !important;
        max-width: none !important;
        padding: 0 !important;
        margin: 0 !important;
    }
    .article {
        max-width: none !important;
        margin: 0 !important;
        font-size: 11pt !important;
    }
    .article-head {
        margin-bottom: 20pt !important;
        padding-bottom: 12pt !important;
        page-break-after: avoid;
    }
    .article-meta {
        font-size: 8pt !important;
        color: #555 !important;
        margin-bottom: 6pt !important;
    }
    .article-label {
        font-size: 10pt !important;
        color: #555 !important;
        margin-bottom: 4pt !important;
        letter-spacing: 0.18em;
    }
    .article-title {
        font-size: 24pt !important;
        font-weight: 700 !important;
        margin-bottom: 6pt !important;
        line-height: 1.2 !important;
    }
    .article-subtitle {
        font-size: 13pt !important;
        color: #333 !important;
        font-style: italic;
    }
    .reading-meta {
        font-size: 8pt !important;
        color: #888 !important;
        margin-bottom: 0 !important;
    }
    .article-body {
        font-size: 11pt !important;
        line-height: 1.7 !important;
        color: #000 !important;
    }
    .article-body p {
        margin-bottom: 0.7em !important;
        text-align: justify !important;
        orphans: 3;
        widows: 3;
    }
    .article-body h2 {
        font-size: 15pt !important;
        margin: 1.2em 0 0.5em !important;
        padding-left: 8pt !important;
        page-break-after: avoid;
        page-break-before: auto;
    }
    .article-body h2::before {
        background: #000 !important;
        width: 2pt !important;
    }
    .article-body h3 {
        font-size: 13pt !important;
        margin: 0.9em 0 0.4em !important;
        page-break-after: avoid;
    }
    .article-body h4 {
        font-size: 11pt !important;
        margin: 0.7em 0 0.3em !important;
        page-break-after: avoid;
    }
    .article-body p strong.concept {
        background: none !important;
        font-weight: 700 !important;
        color: #000 !important;
        text-decoration: underline;
        text-decoration-style: dotted;
        text-underline-offset: 2pt;
    }
    .article-body p.insight {
        background: #f4f0e8 !important;
        border-left: 2pt solid #555 !important;
        padding: 8pt 12pt !important;
        margin: 1em 0 !important;
        page-break-inside: avoid;
    }
    /* 锚点链接 # 隐藏 */
    .article-body h2 a.anchor,
    .article-body h3 a.anchor,
    .article-body h4 a.anchor { display: none !important; }
    /* 划线 mark 转为下划线 */
    .article-body mark.hl {
        background: none !important;
        border-bottom: 1.5pt solid #888 !important;
        padding: 0 !important;
    }

    /* 框架卡：保留但简化 */
    .framework {
        border: 1pt solid #888 !important;
        border-radius: 4pt !important;
        padding: 12pt !important;
        margin: 1em 0 !important;
        page-break-inside: avoid;
        background: #fafafa !important;
        box-shadow: none !important;
    }
    .framework-head {
        padding-bottom: 6pt !important;
        margin-bottom: 10pt !important;
        border-bottom: 0.5pt solid #888 !important;
    }
    .framework-title { font-size: 13pt !important; }
    .framework-label, .framework-hint {
        font-size: 8pt !important; color: #555 !important;
    }
    /* 框架内部所有色块用边框替代背景 */
    .ladder-rung,
    .gen-detail,
    .emp-cell,
    .arche-cell,
    .meaning-cell,
    .ring-item,
    .moat,
    .battlefield,
    .step-cell,
    .lens-card,
    .compass-item,
    .dicho-side {
        background: none !important;
        border: 0.5pt solid #aaa !important;
        box-shadow: none !important;
        page-break-inside: avoid;
    }
    .ladder-rung::before,
    .emp-cell::before,
    .meaning-cell::before,
    .arche-cell::before { display: none !important; }
    .ladder-rung .rung-detail { display: block !important; }
    .gen-detail { display: block !important; }
    .lens-circle { display: none !important; }  /* venn 圆打印没用，隐藏 */

    /* URL footnote: 在链接后显示完整 URL（自定义类不影响视觉） */
    a[href]:not(.anchor)::after { content: ''; }  /* 默认不显示，保持简洁 */
}

/* ===========================================================
   RESPONSIVE
   =========================================================== */
@media (max-width: 1100px) {
    .reader { grid-template-columns: 200px 1fr; }
    .aside { display: none; }
    .reader-fab { display: inline-flex; align-items: center; justify-content: center; }
}
@media (max-width: 800px) {
    :root { --gutter: 22px; }
    .nav-links { display: none; }
    .reader { grid-template-columns: 1fr; }
    .toc { display: none; }
    .sec-head { grid-template-columns: 1fr; gap: 12px; }
    .paths-grid { grid-template-columns: 1fr; }
    .part-row { grid-template-columns: 60px 1fr; gap: 12px; }
    .part-row .part-sub,
    .part-row .part-count { display: none; }
    .part-chapters { padding-left: 0; }
    .ladder-rung { grid-template-columns: 50px 1fr; }
    .ladder-rung .rung-detail { grid-column: 1 / -1; }
    .hero { padding: 60px var(--gutter) 40px; }
    .timeline-track { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .timeline-track::before { display: none; }
    .empowerments { grid-template-columns: 1fr; }
    .dichotomy { grid-template-columns: 1fr; }
    .reader { padding: 30px var(--gutter); }
    .article-body { font-size: 16.5px; line-height: 1.8; }
}