/* ============================================================
   AI术语图鉴 v3 · 知识星图 / 数字图鉴
   v3 变更：页脚升级为三栏作者署名区（品牌 / 作者 / 关注）
   纸面底色 + 1px 细线 + 编号系统 + 几何符号，品牌紫仅作局部强调
   ============================================================ */
:root {
  --bg: #F7F6F2;
  --card: #FFFFFF;
  --ink: #171717;
  --ink-2: #737373;
  --ink-3: #A3A29C;
  --line: #E7E5E0;
  --accent: #6757E8;
  --accent-faint: rgba(103, 87, 232, .08);
  --good: #4E9A6F;
  --good-soft: #EDF4EF;
  --bad: #B4544A;
  --bad-soft: #F7EEEC;
  --warn: #A97C2F;
  --warn-soft: #F6F0E2;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  --serif: Georgia, "Times New Roman", "Songti SC", serif;
  --mono: ui-monospace, Menlo, "SF Mono", Consolas, monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
::selection { background: var(--accent-faint); }

/* ---------- 顶部导航 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 1240px; margin: 0 auto; padding: 14px 28px;
  display: flex; align-items: center; gap: 24px;
}
.logo { display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.logo .logo-mark { width: 20px; height: 20px; color: var(--accent); display: inline-flex; }
.logo .logo-mark svg { width: 100%; height: 100%; }
/* 星形 logo：实心品牌紫填充（覆盖 symbols.js 里的描边样式） */
.logo .logo-mark svg path { fill: currentColor; stroke: none; }
.logo .logo-zh { font-weight: 700; font-size: 17px; letter-spacing: 1px; }
/* 顶栏署名：与页脚 © 字样同款（小号灰字） */
.logo .logo-copy { font-size: 11px; color: var(--ink-3); letter-spacing: .5px; }
.logo .logo-en {
  font-family: var(--mono); font-size: 10px; letter-spacing: 2.5px;
  color: var(--ink-2); padding-left: 10px; border-left: 1px solid var(--line);
}
.topbar .spacer { flex: 1; }
/* 顶栏右侧个人标识：透明底 PNG，与页面底色融合 */
.brandmark { display: inline-flex; align-items: center; margin-left: 4px; }
.brandmark img { height: 28px; width: auto; display: block; }

/* ---------- 搜索 ---------- */
.search-wrap { position: relative; }
.search-input {
  width: 468px; padding: 8px 14px 8px 32px;
  border: 1px solid var(--line); border-radius: 4px;
  background: var(--card); font-size: 13.5px; outline: none;
  color: var(--ink);
  transition: border-color .2s;
}
.search-input:focus { border-color: var(--accent); }
.search-input::placeholder { color: var(--ink-3); }
.search-wrap::before {
  content: ""; position: absolute; left: 12px; top: 50%;
  width: 11px; height: 11px; transform: translateY(-58%);
  border: 1.5px solid var(--ink-3); border-radius: 50%;
}
.search-wrap::after {
  content: ""; position: absolute; left: 23px; top: 62%;
  width: 6px; height: 1.5px; background: var(--ink-3); transform: rotate(45deg);
}
.search-results {
  display: none; position: absolute; top: calc(100% + 6px); right: 0;
  width: 100%; max-height: 60vh; overflow: auto;
  background: var(--card); border: 1px solid var(--line);
  border-radius: 4px; padding: 4px;
}
.search-results.show { display: block; }
.search-item {
  display: flex; align-items: baseline; gap: 10px;
  padding: 9px 12px; border-radius: 3px; font-size: 14px;
  border-bottom: 1px solid var(--line);
}
.search-item:last-child { border-bottom: none; }
.search-item:hover { background: var(--accent-faint); }
.search-item .sr-no { font-family: var(--mono); font-size: 11px; color: var(--ink-3); flex-shrink: 0; }
.search-item b { white-space: nowrap; font-weight: 600; }
.search-item small { color: var(--ink-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.search-empty { padding: 14px; text-align: center; color: var(--ink-2); font-size: 13px; }

/* ---------- 首页 Hero ---------- */
.hero {
  max-width: 1240px; margin: 0 auto; padding: 64px 28px 24px;
  display: grid; grid-template-columns: 340px 1fr; gap: 48px; align-items: start;
}
.hero-left { padding-top: 24px; }
.hero h1 { font-size: 46px; line-height: 1.15; letter-spacing: 2px; font-weight: 800; }
.hero .hero-en {
  display: block; font-family: var(--serif); font-weight: 400;
  font-size: 21px; letter-spacing: 5px; color: var(--ink);
  margin-top: 10px; text-transform: uppercase;
}
.hero p.sub { margin-top: 22px; font-size: 15px; color: var(--ink-2); max-width: 300px; }
.hero-progress { margin-top: 34px; }
.hero-progress .hp-num {
  font-family: var(--mono); font-size: 13px; color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.hero-progress .hp-label {
  font-family: var(--mono); font-size: 10px; letter-spacing: 2px;
  color: var(--ink-2); margin-left: 8px;
}
.hero-progress .hp-track { margin-top: 10px; width: 100%; max-width: 260px; height: 2px; background: var(--line); }
.hero-progress .hp-fill { height: 100%; background: var(--accent); width: 0; transition: width .4s; }
.hero-quote {
  margin-top: 40px; padding-left: 14px; border-left: 1px solid var(--ink);
  font-size: 13px; color: var(--ink-2); line-height: 2;
}
.hero-quote footer { font-size: 11px; color: var(--ink-3); margin-top: 6px; letter-spacing: 1px; }

/* ---------- 知识星图 ---------- */
.starmap-wrap { position: relative; min-width: 0; }
.starmap-svg { width: 100%; height: auto; display: block; }
.sn-edge { fill: none; stroke: var(--line); stroke-width: 1; transition: stroke .2s, opacity .2s; }
.sn-edge.lit { stroke: var(--accent); opacity: .55; }
.sn-edge.dim { opacity: .25; }
.sn-cluster-num { font-family: var(--mono); font-size: 11px; fill: var(--ink-2); letter-spacing: 1px; }
.sn-cluster-en {
  font-family: var(--serif); font-size: 12.5px; fill: var(--ink);
  letter-spacing: 2.5px; text-transform: uppercase;
}
.sn-cluster-zh { font-family: var(--sans); font-size: 11px; fill: var(--ink-2); letter-spacing: 2px; }
.sn-cluster-sym { color: var(--accent); }
.sn-cluster-sym svg { display: block; }
.sn-node { cursor: pointer; transition: opacity .2s; }
.sn-node-inner {
  transform-box: fill-box; transform-origin: center;
  transition: transform .18s;
}
.sn-node:hover .sn-node-inner, .sn-node.hot .sn-node-inner { transform: scale(1.18); }
.sn-node .sn-core {
  fill: var(--bg); stroke: var(--accent); stroke-width: 1.2;
  transition: fill .2s, stroke .2s;
}
.sn-node .sn-half { fill: var(--accent); opacity: 0; transition: opacity .2s; }
.sn-node .sn-star { fill: var(--accent); opacity: 0; transition: opacity .2s; }
.sn-node.exploring .sn-half { opacity: .55; }
.sn-node.learned .sn-core { fill: var(--bg); stroke: transparent; }
.sn-node.learned .sn-star { opacity: 1; }
.sn-node.dim { opacity: .28; }
.sn-node .sn-label {
  font-family: var(--sans); font-size: 12.5px; fill: var(--ink);
  letter-spacing: .5px;
}
.sn-node .sn-no {
  font-family: var(--mono); font-size: 9.5px; fill: var(--ink-3); letter-spacing: 1px;
}
.sn-node:hover .sn-label { fill: var(--accent); }
.sn-node:hover .sn-no { fill: var(--accent); opacity: .8; }
.starmap-tip {
  position: absolute; z-index: 20; pointer-events: none;
  width: 240px; background: var(--card); border: 1px solid var(--line);
  border-radius: 4px; padding: 12px 14px;
  opacity: 0; transform: translateY(4px);
  transition: opacity .18s, transform .18s;
}
.starmap-tip.show { opacity: 1; transform: none; }
.starmap-tip .tip-no { font-family: var(--mono); font-size: 10px; letter-spacing: 2px; color: var(--ink-3); }
.starmap-tip .tip-zh { font-size: 15px; font-weight: 700; margin-top: 2px; }
.starmap-tip .tip-en { font-family: var(--serif); font-size: 11.5px; color: var(--ink-2); letter-spacing: .5px; margin-top: 1px; }
.starmap-tip .tip-what { font-size: 12.5px; color: var(--ink-2); margin-top: 8px; line-height: 1.7; }
.starmap-tip .tip-done { font-family: var(--mono); font-size: 10px; letter-spacing: 1.5px; color: var(--accent); margin-top: 8px; }
.starmap-tip .tip-done.tip-ing { color: var(--ink-2); }
.starmap-caption {
  display: flex; justify-content: space-between; margin-top: 6px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 2px; color: var(--ink-3);
}
.starmap-legend {
  display: flex; gap: 22px; margin-top: 8px; flex-wrap: wrap; justify-content: flex-end;
  font-family: var(--mono); font-size: 10px; letter-spacing: 2px; color: var(--ink-2);
}
.starmap-legend .lg { display: inline-flex; align-items: center; gap: 7px; }
.starmap-legend .lg svg { width: 14px; height: 14px; display: block; }

/* 移动端降级：分组节点列表 */
.starmap-list { display: none; }
.starmap-list .sml-group { border-top: 1px solid var(--line); padding: 14px 0; }
.starmap-list .sml-head {
  display: flex; align-items: baseline; gap: 10px; margin-bottom: 8px;
}
.starmap-list .sml-sym { width: 15px; height: 15px; color: var(--accent); align-self: center; }
.starmap-list .sml-sym svg { width: 100%; height: 100%; display: block; }
.starmap-list .sml-num { font-family: var(--mono); font-size: 11px; color: var(--ink-2); }
.starmap-list .sml-en { font-family: var(--serif); font-size: 12px; letter-spacing: 2px; text-transform: uppercase; }
.starmap-list .sml-zh { font-size: 12px; color: var(--ink-2); letter-spacing: 1px; }
.starmap-list .sml-nodes { display: flex; flex-direction: column; }
.starmap-list .sml-node {
  display: flex; align-items: baseline; gap: 10px;
  padding: 9px 2px; border-bottom: 1px solid var(--line); font-size: 14.5px;
}
.starmap-list .sml-node:last-child { border-bottom: none; }
.starmap-list .sml-node .no { font-family: var(--mono); font-size: 11px; color: var(--ink-3); width: 30px; flex-shrink: 0; }
.starmap-list .sml-node .what { font-size: 12px; color: var(--ink-2); margin-left: auto; text-align: right; max-width: 55%; }
.starmap-list .sml-node .t-sym { width: 14px; height: 14px; color: var(--ink-3); flex-shrink: 0; align-self: center; }
.starmap-list .sml-node .t-sym svg { width: 100%; height: 100%; display: block; }
.starmap-list .sml-node .st { width: 13px; height: 13px; flex-shrink: 0; align-self: center; }
.starmap-list .sml-node .st svg { width: 100%; height: 100%; display: block; }
.sml-legend {
  display: flex; gap: 16px; align-items: center; flex-wrap: wrap;
  font-family: var(--mono); font-size: 10px; letter-spacing: 2px;
  color: var(--ink-2); padding: 4px 0 6px;
}
.sml-legend .lg { display: inline-flex; align-items: center; gap: 6px; }
.sml-legend .lg svg { width: 12px; height: 12px; display: block; }

/* ---------- 按类别探索 ---------- */
.main { max-width: 1240px; margin: 0 auto; padding: 0 28px 110px; }
.cats-head {
  display: flex; align-items: baseline; gap: 14px;
  border-top: 1px solid var(--ink); padding-top: 18px; margin-top: 48px;
}
.cats-head h2 { font-size: 22px; font-weight: 800; letter-spacing: 1px; }
.cats-head .cats-en {
  font-family: var(--serif); font-size: 12px; letter-spacing: 3px;
  color: var(--ink-2); text-transform: uppercase;
}
.cats-head .cats-total {
  margin-left: auto; font-family: var(--mono); font-size: 11px;
  letter-spacing: 1.5px; color: var(--ink-2);
}
.cats-grid {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 0;
  margin-top: 28px; border-top: 1px solid var(--line);
}
.cat-col { padding: 20px 18px 8px; border-left: 1px solid var(--line); min-width: 0; }
.cat-col:first-child { border-left: none; padding-left: 0; }
.cat-head { display: flex; flex-direction: column; gap: 2px; padding-bottom: 14px; }
.cat-head .cat-sym { width: 17px; height: 17px; color: var(--accent); margin-bottom: 8px; }
.cat-head .cat-sym svg { width: 100%; height: 100%; display: block; }
.cat-head .cat-no { font-family: var(--mono); font-size: 11px; color: var(--ink-2); letter-spacing: 1px; }
.cat-head .cat-zh { font-size: 15.5px; font-weight: 700; margin-top: 2px; }
.cat-head .cat-en {
  font-family: var(--serif); font-size: 10px; letter-spacing: 1.8px;
  color: var(--ink-2); text-transform: uppercase; margin-top: 1px;
}
.cat-head .cat-count {
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-3);
  margin-top: 8px; font-variant-numeric: tabular-nums;
}
.cat-terms { display: flex; flex-direction: column; }
.cat-term {
  display: flex; align-items: baseline; gap: 8px;
  padding: 8px 0; border-top: 1px solid var(--line); font-size: 13.5px;
  transition: padding-left .18s;
}
.cat-term:hover { padding-left: 4px; }
.cat-term .no { font-family: var(--mono); font-size: 10.5px; color: var(--ink-3); flex-shrink: 0; }
.cat-term .zh { font-weight: 500; }
.cat-term .arrow { margin-left: auto; color: var(--ink-3); font-size: 12px; transition: color .18s; }
.cat-term:hover .arrow { color: var(--accent); }
.cat-term .t-sym { width: 14px; height: 14px; color: var(--ink-3); flex-shrink: 0; align-self: center; }
.cat-term .t-sym svg { width: 100%; height: 100%; display: block; }
.cat-term:hover .t-sym { color: var(--accent); }
.cat-term .st { width: 13px; height: 13px; flex-shrink: 0; align-self: center; margin-left: auto; }
.cat-term .st svg { width: 100%; height: 100%; display: block; }
.cat-term.learned .zh { color: var(--ink-2); }

/* 页脚 · 作者署名区（三栏：品牌 / 作者 / 关注） */
.site-footer {
  border-top: 1px solid var(--line);
  max-width: 1240px; margin: 0 auto;
  padding: 48px 28px 46px;
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
}
.sf-col { padding: 0 40px; display: flex; flex-direction: column; justify-content: center; }
.sf-col:first-child { padding-left: 0; }
.sf-col:last-child { padding-right: 0; }
.sf-col + .sf-col { border-left: 1px solid var(--line); }

/* 三栏统一节奏：mono 小标签 → 主行 16px → 副行 12.5px */
.sf-label { font-family: var(--mono); font-size: 10px; letter-spacing: 2px; text-transform: uppercase; color: var(--ink-3); }
.sf-brand-zh, .sf-name { font-size: 16px; font-weight: 600; letter-spacing: .5px; margin-top: 8px; }
.sf-tagline, .sf-tags { font-size: 12.5px; color: var(--ink-2); letter-spacing: .5px; margin-top: 4px; }

.sf-links { margin-top: 8px; display: flex; flex-direction: column; }
.sf-link {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: 9px 0; font-size: 13px; color: var(--ink);
  border-top: 1px solid var(--line);
  transition: color .18s;
}
.sf-link:first-child { border-top: none; }
.sf-link .arr { color: var(--ink-3); font-size: 12px; transition: color .18s, transform .18s; }
a.sf-link:hover { color: var(--accent); }
a.sf-link:hover .arr { color: var(--accent); transform: translateX(3px); }
/* 未提供链接的占位项（GitHub） */
.sf-link.sf-pending { color: var(--ink-3); }

/* ============================================================
   术语详情页 · 知识标本页
   ============================================================ */
.doc { max-width: 780px; margin: 0 auto; padding: 44px 28px 110px; }

/* 标本签页头 */
.spec-label {
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 11px; letter-spacing: 2px; color: var(--ink-2);
}
.spec-label a { border-bottom: 1px solid var(--line); transition: color .18s, border-color .18s; }
.spec-label a:hover { color: var(--accent); border-color: var(--accent); }
.spec-label .sep { color: var(--ink-3); }
.spec-title-row { display: flex; align-items: flex-start; gap: 18px; margin-top: 34px; }
.spec-symbol { width: 44px; height: 44px; color: var(--ink); flex-shrink: 0; margin-top: 6px; }
.spec-symbol svg { width: 100%; height: 100%; display: block; }
/* v3：大标题为英文，沿用英文原衬线字体 */
.doc h1 { font-family: var(--serif); font-size: 36px; line-height: 1.25; letter-spacing: 1px; font-weight: 600; }
.doc h1 .en {
  display: block; font-family: var(--serif); font-size: 14px; font-weight: 400;
  color: var(--ink-2); letter-spacing: 1.5px; margin-top: 8px;
}
.doc-meta { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 8px 22px; align-items: baseline; }
.doc-meta .meta-group { font-size: 12.5px; color: var(--ink-2); letter-spacing: 1px; }
.doc-meta .meta-group b { font-weight: 600; color: var(--ink); }
.doc-meta .meta-chapter { font-family: var(--mono); font-size: 11px; color: var(--ink-3); letter-spacing: 1px; }
.alias-line { font-size: 12.5px; color: var(--ink-2); }
.alias-line i { font-style: normal; border-bottom: 1px solid var(--line); margin-left: 2px; }
.spec-prereq {
  margin-top: 22px; padding-top: 14px; border-top: 1px solid var(--line);
  font-size: 15px; color: var(--ink-2);
  display: flex; gap: 8px; flex-wrap: wrap; align-items: baseline;
}
/* v3：标签字号与分区标题（13px）一致，链接同比例放大 */
.spec-prereq .sp-label { font-family: var(--mono); font-size: 13px; letter-spacing: 1px; color: var(--ink-2); }
.spec-prereq a { border-bottom: 1px solid var(--line); transition: color .18s, border-color .18s; }
.spec-prereq a:hover { color: var(--accent); border-color: var(--accent); }
.spec-prereq a .n { font-family: var(--mono); font-size: 13px; color: var(--ink-3); margin-right: 4px; }

/* 编号分区 */
.section { margin-top: 52px; }
.sec-label {
  display: flex; align-items: baseline; gap: 12px;
  border-top: 1px solid var(--ink); padding-top: 12px; margin-bottom: 24px;
}
.sec-label .sec-num { font-family: var(--mono); font-size: 12px; color: var(--ink-2); }
.sec-label .sec-en {
  font-family: var(--serif); font-size: 12.5px; letter-spacing: 3px;
  text-transform: uppercase; color: var(--ink);
}
.sec-label .sec-zh { font-size: 13px; color: var(--ink-2); letter-spacing: 1px; }

/* 引用式「你可能会说」（v3：左边线品牌紫，标签字号与分区标题一致） */
.scenario-quote {
  margin-top: 44px; padding: 4px 0 4px 20px;
  border-left: 2px solid var(--accent);
  color: var(--ink-2); font-size: 15.5px; line-height: 2;
}
.scenario-quote .sq-label {
  display: block; font-family: var(--mono); font-size: 13px;
  letter-spacing: 1px; color: var(--ink-2); margin-bottom: 8px;
}

/* 定义 */
.definition { font-size: 16.5px; }

/* 演示内的原生表单控件（滑杆/复选框/单选）默认是蓝色，统一为品牌紫 */
.demo-box input[type="range"],
.demo-box input[type="checkbox"],
.demo-box input[type="radio"] { accent-color: var(--accent); }
.definition p + p { margin-top: 10px; font-size: 15px; color: var(--ink-2); }
.definition b { font-weight: 700; }

/* WHY 两栏 */
.two-col { display: grid; gap: 0; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: 4px; background: var(--card); }
.info-card { padding: 22px 24px; }
.info-card + .info-card { border-left: 1px solid var(--line); }
.info-card h4 {
  font-size: 12px; letter-spacing: 2px; color: var(--ink-2);
  font-weight: 600; margin-bottom: 12px; text-transform: uppercase;
}
.info-card ul { list-style: none; }
.info-card li { position: relative; padding-left: 16px; font-size: 14px; color: var(--ink-2); margin-top: 8px; }
.info-card li::before {
  content: ""; position: absolute; left: 0; top: .72em;
  width: 5px; height: 5px; border-radius: 50%; background: var(--accent);
}

/* 记住这三个词：编号关键词行 */
.kw-lines { display: flex; flex-direction: column; }
.kw-line {
  display: flex; align-items: baseline; gap: 16px;
  padding: 12px 2px; border-bottom: 1px solid var(--line); font-size: 15px;
}
.kw-line:first-child { border-top: 1px solid var(--line); }
.kw-line .kw-no { font-family: var(--mono); font-size: 11.5px; color: var(--ink-3); }

/* 容易混淆：引用式（v3：左边线与标签统一为品牌紫） */
.confuse-quote {
  padding: 4px 0 4px 20px; border-left: 2px solid var(--accent);
  font-size: 14.5px; color: var(--ink-2); line-height: 2;
}
.confuse-quote .cq-label {
  display: block; font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 2px; color: var(--accent); margin-bottom: 8px;
}

/* 延伸阅读 */
.ext-list { display: flex; flex-direction: column; }
.ext-link {
  display: flex; align-items: baseline; gap: 12px;
  padding: 12px 2px; border-bottom: 1px solid var(--line);
  font-size: 14.5px; transition: padding-left .18s;
}
.ext-link:first-child { border-top: 1px solid var(--line); }
.ext-link:hover { padding-left: 6px; }
.ext-link .ext-no { font-family: var(--mono); font-size: 11px; color: var(--ink-3); }
.ext-link .arrow { margin-left: auto; color: var(--ink-3); font-size: 12px; }
.ext-link:hover .arrow { color: var(--accent); }

/* 已探索状态行（安静版） */
.learn-line {
  margin-top: 52px; padding-top: 14px; border-top: 1px solid var(--line);
  display: flex; align-items: center; gap: 12px;
}
.learn-toggle {
  display: inline-flex; align-items: center; gap: 10px;
  background: none; border: none; padding: 4px 0;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 2px;
  color: var(--ink-2); text-transform: uppercase;
  transition: color .18s;
}
.learn-toggle::before {
  content: ""; width: 8px; height: 8px; border-radius: 50%;
  border: 1px solid var(--ink-3); transition: all .18s;
}
.learn-toggle:hover { color: var(--accent); }
.learn-toggle:hover::before { border-color: var(--accent); }
.learn-toggle.on { color: var(--accent); }
.learn-toggle.on::before { background: var(--accent); border-color: var(--accent); }

/* 相关概念 */
.rel-list { display: flex; flex-direction: column; }
.rel-row {
  display: flex; align-items: baseline; gap: 14px;
  padding: 13px 2px; border-bottom: 1px solid var(--line);
  transition: padding-left .18s;
}
.rel-row:first-child { border-top: 1px solid var(--line); }
.rel-row:hover { padding-left: 6px; }
.rel-row .no { font-family: var(--mono); font-size: 11px; color: var(--ink-3); }
.rel-row .zh { font-size: 15px; font-weight: 600; }
.rel-row .en { font-family: var(--serif); font-size: 11.5px; color: var(--ink-2); letter-spacing: .5px; }
.rel-row .arrow { margin-left: auto; color: var(--ink-3); font-size: 13px; }
.rel-row:hover .arrow { color: var(--accent); }
.rel-row .st { width: 13px; height: 13px; flex-shrink: 0; align-self: center; }
.rel-row .st svg { width: 100%; height: 100%; display: block; }

/* RELATED STARS · 相关星群迷你星图 */
.rel-map { margin-bottom: 26px; overflow: hidden; }
.rel-map-svg { width: 100%; max-width: 560px; height: auto; display: block; }
.rm-edge { stroke: var(--line); stroke-width: 1; }
.rm-node { cursor: pointer; }
.rm-node .rm-core { fill: var(--bg); stroke: var(--accent); stroke-width: 1.2; transition: fill .2s; }
.rm-node .rm-half { fill: var(--accent); opacity: 0; transition: opacity .2s; }
.rm-node .rm-star { fill: var(--accent); opacity: 0; transition: opacity .2s; }
.rm-node.exploring .rm-half { opacity: .55; }
.rm-node.learned .rm-core { fill: var(--bg); stroke: transparent; }
.rm-node.learned .rm-star { opacity: 1; }
.rm-node .rm-label { font-size: 12px; fill: var(--ink); letter-spacing: .5px; transition: fill .18s; }
.rm-node .rm-en { font-size: 10px; fill: var(--ink-3); letter-spacing: .5px; transition: fill .18s; }
.rm-node .rm-num { font-family: var(--mono); font-size: 9px; fill: var(--ink-3); letter-spacing: 1px; }
.rm-node:hover .rm-label { fill: var(--accent); }
.rm-node:hover .rm-en { fill: var(--accent); }
.rm-node.rm-center { cursor: default; }

/* 页底 PREV / NEXT */
.prev-next {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
  margin-top: 72px; border-top: 1px solid var(--ink);
}
.pn-col { padding: 20px 0; }
.pn-col.next { text-align: right; }
.pn-col .pn-label {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 2.5px; color: var(--ink-3);
  text-transform: uppercase; display: block;
}
.pn-col .pn-zh { font-size: 19px; font-weight: 700; margin-top: 8px; display: inline-block; }
.pn-col .pn-en { font-family: var(--serif); font-size: 11.5px; color: var(--ink-2); letter-spacing: 1px; margin-top: 2px; }
.pn-col a:hover .pn-zh { color: var(--accent); }
.pn-col .pn-no { font-family: var(--mono); font-size: 11px; color: var(--ink-3); margin-right: 8px; }
.pn-col.next .pn-no { margin-right: 0; margin-left: 8px; }

/* ---------- 通用小组件（详情页渲染用） ---------- */
.crumb { font-size: 13px; color: var(--ink-2); margin-bottom: 28px; }
.crumb a:hover { color: var(--accent); }
.mini-card {
  display: inline-flex; align-items: center; gap: 10px;
  border: 1px solid var(--line); border-radius: 4px; background: var(--card);
  padding: 10px 14px; font-size: 14px; transition: border-color .18s;
}
.mini-card:hover { border-color: var(--accent); }
.mini-card .n { font-family: var(--mono); font-size: 11px; color: var(--ink-3); }
.mini-card .arrow { color: var(--ink-3); }
.prereq-row, .next-grid { display: flex; gap: 10px; flex-wrap: wrap; }
.section-label {
  font-size: 12px; font-weight: 600; color: var(--ink-2);
  letter-spacing: 2px; margin-bottom: 14px; text-transform: uppercase;
}
.back-link {
  font-family: var(--mono); font-size: 11px; letter-spacing: 2px;
  color: var(--ink-2); text-transform: uppercase;
  border-bottom: 1px solid var(--line); padding-bottom: 2px;
  transition: color .18s, border-color .18s;
}
.back-link:hover { color: var(--accent); border-color: var(--accent); }

/* 兜底：未找到术语时的极简列表 */
.card-grid { display: grid; gap: 0; grid-template-columns: 1fr 1fr; margin-top: 24px; }
.term-card {
  display: flex; align-items: baseline; gap: 12px;
  padding: 14px 4px; border-bottom: 1px solid var(--line);
}
.term-card .num { font-family: var(--mono); font-size: 11px; color: var(--ink-3); }
.term-card h3 { font-size: 15px; font-weight: 600; }
.term-card .en { font-size: 11.5px; color: var(--ink-2); }
.term-card:hover h3 { color: var(--accent); }

/* ============================================================
   互动演示（demos.js DOM 契约不换，换皮为新语言）
   ============================================================ */
.demo-box {
  background: var(--card); border: 1px solid var(--line); border-radius: 4px;
  padding: 26px; overflow: hidden;
}
.demo-title { font-size: 14.5px; font-weight: 700; margin-bottom: 4px; letter-spacing: .5px; }
.demo-hint { font-size: 13px; color: var(--ink-2); margin-bottom: 18px; }
.demo-btn {
  background: var(--card); color: var(--ink);
  border: 1px solid var(--ink); border-radius: 4px;
  padding: 8px 18px; font-size: 13px; letter-spacing: 1px;
  transition: all .18s;
}
.demo-btn:hover { border-color: var(--accent); color: var(--accent); }
.demo-btn:disabled { opacity: .35; cursor: default; border-color: var(--line); color: var(--ink-2); }
.demo-btn.ghost { border-color: var(--line); color: var(--ink-2); }
.demo-btn.ghost:hover { border-color: var(--accent); color: var(--accent); }

/* Token 切分器 */
.tok-input {
  width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: 4px;
  font-size: 15px; outline: none; background: var(--card); color: var(--ink);
}
.tok-input:focus { border-color: var(--accent); }
.tok-out { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; min-height: 40px; }
.tok-chip {
  padding: 4px 10px; border-radius: 3px; font-size: 14px;
  background: var(--accent-faint); border: 1px solid rgba(103, 87, 232, .25);
  font-family: var(--mono);
}
.tok-chip:nth-child(3n+2) { background: var(--good-soft); border-color: rgba(78, 154, 111, .3); }
.tok-chip:nth-child(3n) { background: var(--warn-soft); border-color: rgba(169, 124, 47, .28); }
.tok-chip small { display: block; font-size: 10px; color: var(--ink-3); text-align: center; }
.tok-count { margin-top: 12px; font-size: 13px; color: var(--ink-2); }
.tok-count b { color: var(--accent); font-size: 16px; }

/* 上下文瓶 */
.bottle-wrap { display: flex; gap: 26px; align-items: flex-end; flex-wrap: wrap; }
.bottle {
  width: 130px; height: 280px; border: 2px solid var(--ink); border-radius: 6px;
  position: relative; overflow: hidden; background: var(--card); flex-shrink: 0;
}
.bottle-fill {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: rgba(103, 87, 232, .35);
  height: 0; transition: height .6s;
  display: flex; flex-direction: column-reverse;
}
.bottle.over .bottle-fill { background: rgba(180, 84, 74, .45); }
.bottle-cap { position: absolute; top: 8px; left: 0; right: 0; text-align: center; font-size: 11px; color: var(--ink-2); }
.bottle-items { flex: 1; min-width: 220px; display: flex; flex-direction: column; gap: 8px; }
.bottle-item {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 10px 14px; font-size: 14px;
}
.bottle-item button {
  border: 1px solid var(--line); background: var(--bg); border-radius: 4px;
  font-size: 12px; padding: 4px 12px; transition: all .18s;
}
.bottle-item button:hover { border-color: var(--accent); color: var(--accent); }
.bottle-msg { width: 100%; font-size: 13.5px; color: var(--ink-2); min-height: 24px; }
.bottle-msg.over { color: var(--bad); font-weight: 600; }

/* Prompt 对比 */
.pp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.pp-card { background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 16px; }
.pp-card h5 { font-size: 12px; letter-spacing: 1.5px; color: var(--ink-2); margin-bottom: 8px; }
.pp-prompt { font-size: 13.5px; background: var(--bg); border-radius: 3px; padding: 10px 12px; }
.pp-answer { font-size: 13.5px; margin-top: 10px; color: var(--ink-2); border-top: 1px solid var(--line); padding-top: 10px; display: none; }
.pp-card.show .pp-answer { display: block; }
.pp-good { border-color: rgba(78, 154, 111, .5); }
.pp-good h5 { color: var(--good); }

/* Embedding 分组 */
.emb-board { display: flex; flex-wrap: wrap; gap: 8px; }
.emb-chip {
  padding: 7px 15px; border-radius: 3px; font-size: 13.5px; cursor: pointer;
  background: var(--card); border: 1px solid var(--line); transition: all .2s; user-select: none;
}
.emb-chip.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.emb-chip.dim { opacity: .35; }
.emb-caption {
  margin-top: 16px; font-size: 14px; color: var(--ink-2);
  background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 14px 16px;
  min-height: 52px; line-height: 1.8;
}
.emb-caption code {
  font-family: var(--mono); font-size: 13px;
  background: var(--accent-faint); color: var(--accent); padding: 1px 6px; border-radius: 3px;
}
.emb-caption small { color: var(--ink-3); font-size: 12.5px; }

/* 动手分一分 */
.cls-divider { border-top: 1px solid var(--line); margin: 24px 0 18px; }
.cls-card { background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 14px 16px; margin-top: 10px; }
.cls-q { font-size: 14.5px; font-weight: 600; }
.cls-opts { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.cls-opts button {
  border: 1px solid var(--line); background: var(--bg); border-radius: 4px;
  padding: 5px 14px; font-size: 13px; cursor: pointer; transition: all .2s;
}
.cls-opts button:hover { border-color: var(--accent); }
.cls-opts button.right { background: var(--good-soft); border-color: var(--good); color: var(--good); font-weight: 700; }
.cls-opts button.wrong { background: var(--bad-soft); border-color: var(--bad); color: var(--bad); }
.cls-opts button:disabled { opacity: .45; cursor: default; }
.cls-why { display: none; margin-top: 10px; font-size: 13px; color: var(--ink-2); line-height: 1.7; }
.cls-why.show { display: block; }
.cls-why.ok { color: var(--good); }

/* RAG 流程 */
.rag-steps { display: flex; align-items: stretch; gap: 8px; flex-wrap: wrap; }
.rag-step {
  flex: 1; min-width: 130px; background: var(--card); border: 1px solid var(--line);
  border-radius: 4px; padding: 14px; text-align: center; font-size: 13.5px;
  transition: border-color .3s, background .3s;
}
.rag-step .t { font-weight: 700; font-size: 14px; display: block; margin-bottom: 4px; }
.rag-step.active { border-color: var(--accent); background: var(--accent-faint); }
.rag-arrow { align-self: center; color: var(--ink-3); font-size: 16px; }
.rag-log { margin-top: 16px; font-size: 13.5px; color: var(--ink-2); min-height: 24px; }

/* 工具调用 chat */
.chat-mock { background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.bubble { max-width: 85%; padding: 10px 14px; border-radius: 4px; font-size: 14px; opacity: 0; transform: translateY(6px); transition: opacity .4s, transform .4s; }
.bubble.show { opacity: 1; transform: none; }
.bubble.user { align-self: flex-end; background: var(--accent); color: #fff; }
.bubble.ai { align-self: flex-start; background: var(--bg); border: 1px solid var(--line); }
.bubble.tool {
  align-self: center; background: var(--warn-soft); border: 1px dashed rgba(169, 124, 47, .55);
  color: var(--warn); font-size: 13px; font-family: var(--mono);
}

/* Agent 循环 */
.loop-flow { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.loop-node {
  background: var(--card); border: 1px solid var(--line); border-radius: 4px;
  padding: 10px 16px; font-size: 14px; font-weight: 600; transition: all .3s;
}
.loop-node small { display: block; font-weight: 400; font-size: 12px; color: var(--ink-2); }
.loop-node.active { border-color: var(--accent); background: var(--accent-faint); }
.loop-node.fail { border-color: var(--bad); background: var(--bad-soft); }
.loop-node.ok { border-color: var(--good); background: var(--good-soft); }
.loop-arrow { color: var(--ink-3); }
.loop-log { margin-top: 14px; font-size: 13.5px; color: var(--ink-2); min-height: 24px; }

/* 循环工程：一圈一行 */
.lr-board { display: flex; flex-direction: column; gap: 10px; }
.lr-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.lr-badge { font-family: var(--mono); font-size: 11px; color: var(--ink-2); width: 44px; flex-shrink: 0; letter-spacing: 1px; }
.lr-cell {
  background: var(--card); border: 1px solid var(--line); border-radius: 4px;
  padding: 9px 16px; font-size: 13.5px; font-weight: 600;
  opacity: 0; transform: translateY(6px); transition: all .35s;
}
.lr-cell.on { opacity: 1; transform: none; }
.lr-cell.do.on { border-color: var(--accent); background: var(--accent-faint); }
.lr-cell.fail.on { border-color: var(--bad); background: var(--bad-soft); color: var(--bad); }
.lr-cell.pass.on, .lr-cell.ok.on { border-color: var(--good); background: var(--good-soft); color: var(--good); }
.lr-arrow { color: var(--ink-3); opacity: 0; transition: opacity .3s; }
.lr-arrow.on { opacity: 1; }

/* 猜下一个词 */
.nt-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 14px; }
.nt-sentence {
  background: var(--card); border: 1px solid var(--line); border-radius: 4px;
  padding: 18px; font-size: 17px; line-height: 2; min-height: 120px;
}
.nt-prompt { color: var(--ink-3); font-size: 13px; }
.nt-sentence span.nt-wild { background: var(--warn-soft); border-radius: 3px; padding: 1px 3px; }
.nt-panel { background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 14px 16px; }
.nt-panel-title { font-size: 11px; letter-spacing: 1.5px; color: var(--ink-2); margin-bottom: 10px; }
.nt-cand { display: flex; align-items: center; gap: 10px; margin-top: 8px; font-size: 14px; }
.nt-cand .nt-word { width: 56px; flex-shrink: 0; font-weight: 600; }
.nt-cand .nt-bar { flex: 1; height: 10px; background: var(--bg); border: 1px solid var(--line); border-radius: 3px; overflow: hidden; }
.nt-cand .nt-bar-fill { height: 100%; background: var(--ink-3); transition: width .3s; }
.nt-cand.picked .nt-bar-fill { background: var(--accent); }
.nt-cand.picked .nt-word { color: var(--accent); }
.nt-cand .nt-pct { width: 40px; text-align: right; font-family: var(--mono); font-size: 11.5px; color: var(--ink-2); }
.nt-controls { display: flex; align-items: center; gap: 18px; margin-top: 16px; flex-wrap: wrap; }
.nt-temp { font-size: 13px; color: var(--ink-2); display: flex; align-items: center; gap: 8px; }
.nt-note { margin-top: 12px; font-size: 13.5px; color: var(--ink-2); min-height: 22px; }
.nt-note b { color: var(--accent); }

/* 套娃圈 */
.circles-wrap { display: flex; justify-content: center; }
.circles-svg { width: 100%; max-width: 340px; }
.circle-ring { cursor: pointer; transition: opacity .2s; }
.circle-ring text { fill: var(--ink-2); font-size: 13px; pointer-events: none; }
.circle-ring.on circle { stroke-width: 4; }
.circle-ring.on text { font-weight: 800; fill: var(--ink); }
.circle-label { fill: var(--ink-2); }

/* 幻觉 */
.hallu-card { background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 20px; font-size: 14.5px; }
.hallu-card .cite { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.hallu-verdict { margin-top: 14px; display: none; }
.hallu-verdict.show { display: block; }
.verdict-item { display: flex; gap: 8px; font-size: 13.5px; margin-top: 6px; align-items: baseline; }
.verdict-item .mark { font-weight: 800; flex-shrink: 0; font-family: var(--mono); }
.verdict-item.fake .mark { color: var(--bad); }
.verdict-item.real .mark { color: var(--good); }

/* 评测柱 */
.eval-row { display: flex; align-items: center; gap: 12px; margin-top: 12px; font-size: 14px; }
.eval-row .name { width: 110px; flex-shrink: 0; }
.eval-bar { flex: 1; height: 18px; background: var(--card); border: 1px solid var(--line); border-radius: 3px; overflow: hidden; }
.eval-fill { height: 100%; width: 0; transition: width 1s; background: var(--accent); }
.eval-score { width: 52px; text-align: right; font-family: var(--mono); font-size: 12.5px; font-variant-numeric: tabular-nums; }

/* 记忆 */
.mem-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 14px; }
.mem-chat { background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 14px; min-height: 150px; display: flex; flex-direction: column; gap: 8px; }
.mem-panel { background: var(--warn-soft); border: 1px solid rgba(169, 124, 47, .3); border-radius: 4px; padding: 14px; font-size: 13.5px; }
.mem-panel h5 { color: var(--warn); margin-bottom: 8px; font-size: 12px; letter-spacing: 1.5px; }
.mem-item { background: var(--card); border-radius: 3px; padding: 6px 10px; margin-top: 6px; border: 1px solid rgba(169, 124, 47, .25); }
.mem-input { display: flex; gap: 8px; margin-top: 12px; }
.mem-input input { flex: 1; padding: 9px 12px; border: 1px solid var(--line); border-radius: 4px; font-size: 14px; outline: none; background: var(--card); }
.mem-input input:focus { border-color: var(--accent); }

/* 多智能体 */
.ma-lanes { display: flex; flex-direction: column; gap: 8px; }
.ma-lane { display: flex; align-items: center; gap: 12px; background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 12px 16px; }
.ma-role { font-weight: 700; font-size: 14px; width: 88px; flex-shrink: 0; }
.ma-task { flex: 1; font-size: 13px; color: var(--ink-2); }
.ma-status {
  font-family: var(--mono); font-size: 11px; letter-spacing: 1px;
  padding: 3px 10px; border-radius: 3px; background: var(--bg);
  color: var(--ink-2); transition: all .3s; white-space: nowrap;
  border: 1px solid var(--line);
}
.ma-lane.doing .ma-status { background: var(--accent-faint); color: var(--accent); border-color: rgba(103, 87, 232, .35); }
.ma-lane.finished .ma-status { background: var(--good-soft); color: var(--good); border-color: rgba(78, 154, 111, .35); }

/* 工作流 */
.wf-steps { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.wf-step {
  background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 10px 14px;
  font-size: 13.5px; font-weight: 600; transition: all .3s;
}
.wf-step small { display: block; font-weight: 400; color: var(--ink-2); font-size: 12px; }
.wf-step.active { border-color: var(--accent); background: var(--accent-faint); }
.wf-step.done { border-color: var(--good); background: var(--good-soft); }
.wf-note { margin-top: 14px; font-size: 13px; color: var(--ink-2); }

/* 深度学习层（带图解） */
.dl-stage { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
.dl-photo { position: relative; background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 12px; }
.dl-photo svg { display: block; }
.dl-g { opacity: 0; transition: opacity .7s; }
.dl-g.on { opacity: 1; }
.dl-verdict {
  position: absolute; top: 10px; right: 10px;
  background: var(--good); color: #fff; border-radius: 3px;
  padding: 4px 12px; font-size: 13px; font-weight: 700;
  opacity: 0; transform: scale(.85); transition: all .4s;
}
.dl-verdict.on { opacity: 1; transform: none; }
.dl-layers-col { display: flex; flex-direction: column; gap: 8px; }
.dl-layer {
  display: flex; align-items: baseline; gap: 10px;
  padding: 12px 14px; border-radius: 4px;
  border: 1px solid var(--line); background: var(--card); font-size: 13px; transition: all .3s;
}
.dl-layer b { font-size: 13.5px; flex-shrink: 0; }
.dl-layer small { color: var(--ink-2); font-size: 12px; }
.dl-layer.active { border-color: var(--accent); background: var(--accent-faint); }
.dl-side .loop-log { margin-top: 12px; }

/* 上下文取舍 */
.pick-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.pick-item {
  background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 12px 14px;
  font-size: 13.5px; cursor: pointer; transition: all .2s; user-select: none;
}
.pick-item small { display: block; color: var(--ink-2); font-size: 12px; }
.pick-item.on { border-color: var(--accent); background: var(--accent-faint); }
.pick-result { margin-top: 14px; font-size: 14px; min-height: 24px; }
.pick-result.good { color: var(--good); font-weight: 600; }
.pick-result.bad { color: var(--bad); }

/* AIGC 噪声生成 */
.aigc-grid {
  display: grid; grid-template-columns: repeat(12, 1fr); gap: 3px;
  max-width: 300px; margin: 4px auto;
  background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 10px;
}
.aigc-cell { aspect-ratio: 1; border-radius: 1px; transition: background .12s; }

/* 知识库 */
.kb-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.kb-label { font-size: 12px; letter-spacing: 1.5px; color: var(--ink-2); margin-bottom: 8px; font-weight: 600; }
.kb-scatter {
  background: var(--bg); border: 1px dashed var(--line); border-radius: 4px;
  padding: 14px; min-height: 190px;
  display: flex; flex-wrap: wrap; gap: 8px; align-content: flex-start;
}
.kb-chip {
  background: var(--card); border: 1px solid var(--line); border-radius: 3px;
  padding: 5px 10px; font-size: 12.5px; color: var(--ink-2);
  transition: opacity .4s, transform .4s;
}
.kb-chip.gone { opacity: 0; transform: translateY(-8px); }
.kb-shelf { display: flex; flex-direction: column; gap: 8px; }
.kb-bin {
  background: var(--card); border: 1px solid var(--line); border-radius: 4px;
  padding: 10px 14px; min-height: 62px; transition: all .3s;
}
.kb-bin > b { font-size: 13px; }
.kb-bin.hit { border-color: var(--good); background: var(--good-soft); }
.kb-entries { margin-top: 6px; display: flex; flex-direction: column; gap: 4px; }
.kb-entry {
  font-size: 12.5px; color: var(--ink-2); background: var(--bg);
  border-radius: 3px; padding: 4px 10px; border: 1px solid transparent;
  animation: kbIn .35s ease;
}
.kb-entry.hit { border-color: rgba(78, 154, 111, .4); background: var(--good-soft); color: var(--good); font-weight: 600; }
@keyframes kbIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* MCP 插座 */
.mcp-mode.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.mcp-board { margin-top: 16px; }
.mcp-mess { display: flex; flex-wrap: wrap; gap: 8px; }
.mcp-wire {
  font-size: 12.5px; background: var(--card); border: 1px dashed rgba(180, 84, 74, .6);
  color: var(--bad); border-radius: 3px; padding: 5px 10px;
}
.mcp-diagram { display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap; }
.mcp-col { display: flex; flex-direction: column; gap: 8px; }
.mcp-node {
  background: var(--card); border: 1px solid var(--line); border-radius: 4px;
  padding: 8px 14px; font-size: 13.5px; text-align: center;
}
.mcp-hub {
  background: var(--accent-faint); border: 1px solid var(--accent); border-radius: 4px;
  padding: 14px 18px; text-align: center; font-weight: 800; color: var(--accent); font-size: 15px;
}
.mcp-hub small { font-weight: 400; color: var(--ink-2); font-size: 11.5px; }
.mcp-board .nt-note b { color: var(--accent); }

/* Skill 技能包 */
.sk-manual {
  background: var(--card); border: 1px solid var(--line); border-radius: 4px;
  padding: 16px 18px; font-size: 14px; color: var(--ink-2); margin-top: 16px; line-height: 1.9;
}
.sk-steps { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.sk-step {
  background: var(--card); border: 1px solid var(--line); border-radius: 4px;
  padding: 9px 14px; font-size: 13.5px; transition: all .3s;
}
.sk-step.done { border-color: var(--good); background: var(--good-soft); }

/* Harness 红线 */
.hr-rules { display: flex; flex-direction: column; gap: 8px; }
.hr-rules label {
  display: flex; align-items: center; gap: 8px;
  background: var(--card); border: 1px solid var(--line); border-radius: 4px;
  padding: 10px 14px; font-size: 14px; cursor: pointer;
}
.hr-log { margin-top: 14px; display: flex; flex-direction: column; gap: 8px; }
.hr-line {
  font-size: 13.5px; border-radius: 4px; padding: 9px 14px;
  background: var(--card); border: 1px solid var(--line);
}
.hr-line.ok { border-color: rgba(78, 154, 111, .4); background: var(--good-soft); }
.hr-line.ask { border-color: rgba(169, 124, 47, .4); background: var(--warn-soft); color: var(--warn); }
.hr-line.warn { border-color: rgba(180, 84, 74, .45); background: var(--bad-soft); color: var(--bad); }

/* 多模态 */
.mm-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 14px; align-items: start; }
.mm-photo {
  background: var(--bg); border: 1px solid var(--line); border-radius: 4px;
  padding: 12px; transition: border-color .3s;
}
.mm-photo.used { border-color: var(--accent); }
.mm-tag { text-align: center; font-size: 12px; color: var(--ink-2); margin-top: 6px; }

/* ---------- 测验 ---------- */
.quiz-box {
  background: var(--card); border: 1px solid var(--line); border-radius: 4px;
  padding: 24px 26px;
}
.quiz-box .label { font-family: var(--mono); font-size: 10.5px; letter-spacing: 2px; color: var(--ink-2); text-transform: uppercase; }
.quiz-q { font-size: 16.5px; font-weight: 700; margin-top: 12px; line-height: 1.7; }
.quiz-opts { display: flex; flex-direction: column; gap: 0; margin-top: 18px; border-top: 1px solid var(--line); }
.quiz-opt {
  display: flex; gap: 14px; align-items: baseline; text-align: left;
  background: var(--card); border: none; border-bottom: 1px solid var(--line);
  border-radius: 0;
  padding: 13px 6px; font-size: 14.5px; transition: background .18s;
}
.quiz-opt:hover:not(:disabled) { background: var(--accent-faint); }
.quiz-opt .key {
  font-family: var(--mono); font-size: 11px; color: var(--ink-2); flex-shrink: 0;
  width: 22px; height: 22px; border-radius: 3px; background: var(--bg); border: 1px solid var(--line);
  display: inline-flex; align-items: center; justify-content: center;
}
.quiz-opt.correct { background: var(--good-soft); }
.quiz-opt.correct .key { background: var(--good); color: #fff; border-color: var(--good); }
.quiz-opt.wrong { background: var(--bad-soft); }
.quiz-opt.wrong .key { background: var(--bad); color: #fff; border-color: var(--bad); }
.quiz-opt:disabled { cursor: default; }
.quiz-opt:disabled:not(.correct):not(.wrong) { opacity: .55; }
.quiz-explain {
  display: none; margin-top: 16px; padding: 12px 16px; border-radius: 4px;
  border-left: 2px solid var(--good);
  background: var(--good-soft); color: var(--good); font-size: 14px;
}
.quiz-explain.show { display: block; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero { grid-template-columns: 1fr; gap: 32px; padding-top: 48px; }
  .hero-left { padding-top: 0; }
  .hero p.sub { max-width: 520px; }
  .hero-progress .hp-track { max-width: 320px; }
  .cats-grid { grid-template-columns: repeat(3, 1fr); border-top: none; }
  .cat-col:nth-child(3n+1) { border-left: none; padding-left: 0; }
  .cat-col { border-top: 1px solid var(--line); }
}
@media (max-width: 768px) {
  .topbar-inner { padding: 12px 18px; gap: 14px; flex-wrap: wrap; }
  .logo .logo-en { display: none; }
  .search-wrap { order: 3; width: 100%; }
  .search-input { width: 100%; }
  .search-input:focus { width: 100%; }
  .search-results { width: 100%; left: 0; right: auto; }
  .hero { padding: 36px 18px 16px; }
  .hero h1 { font-size: 32px; }
  .hero .hero-en { font-size: 15px; letter-spacing: 3px; }
  .starmap-wrap { display: none; }
  .starmap-list { display: block; padding: 0 18px; }
  .main { padding: 0 18px 80px; }
  .cats-grid { grid-template-columns: 1fr 1fr; }
  .cat-col { border-left: none; padding-left: 0; }
  .doc { padding: 28px 18px 80px; }
  .doc h1 { font-size: 27px; }
  .spec-symbol { width: 34px; height: 34px; }
  .two-col { grid-template-columns: 1fr; }
  .info-card + .info-card { border-left: none; border-top: 1px solid var(--line); }
  .pp-grid, .pick-grid, .mem-grid, .nt-grid, .kb-grid, .mm-grid, .dl-stage { grid-template-columns: 1fr; }
  .prev-next { grid-template-columns: 1fr; }
  .pn-col.next { text-align: left; border-top: 1px solid var(--line); }
  .bottle-wrap { flex-direction: column; align-items: stretch; }
  .bottle { margin: 0 auto; }
  .card-grid { grid-template-columns: 1fr; }
  .site-footer { grid-template-columns: 1fr; padding: 36px 18px 40px; }
  .sf-col { padding: 24px 0; }
  .sf-col:first-child { padding-top: 0; }
  .sf-col:last-child { padding-bottom: 0; }
  .sf-col + .sf-col { border-left: none; border-top: 1px solid var(--line); }
  .sf-copy { margin-top: 0; }
}