/* ============================================================
   新粗野主义(Neo-Brutalism)设计系统
   纸色底 + 墨色边框 + 硬阴影 + 直角,禁止渐变/毛玻璃/圆角
   ============================================================ */

:root {
  --paper: #F5F0E8;
  --ink: #111111;
  --yellow: #FFDC58;
  --red: #FF6B6B;
  --blue: #6B8CFF;
  --green: #7FBC8C;
  --pink: #FF9EC6;
  --purple: #A388EE;
  --shadow: 6px 6px 0 var(--ink);
  --shadow-hover: 9px 9px 0 var(--ink);
  --border: 3px solid var(--ink);
  --mono: ui-monospace, "Cascadia Mono", Consolas, "Courier New", monospace;
  --sans: "Arial Black", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --body: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  /* 纸面网格纹理(纯 CSS 线条,非渐变装饰) */
  background-image:
    linear-gradient(var(--paper) 23px, rgba(17,17,17,0.05) 24px),
    linear-gradient(90deg, var(--paper) 23px, rgba(17,17,17,0.05) 24px);
  background-size: 24px 24px;
}

a { color: var(--ink); }

/* ---------- 顶栏 ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 20px;
  background: var(--yellow);
  border-bottom: var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--sans);
}

.logo-mark {
  background: var(--ink);
  color: var(--yellow);
  padding: 2px 10px;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 1px;
}

.logo-text { font-size: 20px; font-weight: 900; }

.logo-badge {
  background: var(--red);
  border: var(--border);
  padding: 1px 8px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  box-shadow: 3px 3px 0 var(--ink);
}

.nav { display: flex; flex-wrap: wrap; gap: 6px; }

.nav a {
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  padding: 4px 12px;
  border: var(--border);
  background: var(--paper);
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform 0.1s, box-shadow 0.1s;
}

.nav a:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--ink);
  background: var(--pink);
}

.nav a.active { background: var(--blue); color: var(--paper); }

/* ---------- 跑马灯 ---------- */
.marquee {
  overflow: hidden;
  border-bottom: var(--border);
  background: var(--ink);
  color: var(--yellow);
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}

.marquee-track {
  display: inline-block;
  padding: 6px 0;
  animation: marquee 40s linear infinite;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- 视图与页面过渡 ---------- */
.view {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.view.page-enter { animation: page-in 0.25s ease-out; }
.view.page-exit { animation: page-out 0.15s ease-in; }

@keyframes page-in {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes page-out {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(-40px); }
}

.loading {
  font-family: var(--mono);
  font-size: 18px;
  padding: 60px 0;
  text-align: center;
}

/* ---------- 海报标题 ---------- */
.poster {
  font-family: var(--sans);
  font-weight: 900;
  font-size: clamp(36px, 7vw, 84px);
  line-height: 1.22;
  margin: 20px 0 10px;
  letter-spacing: -1px;
}

.poster .stroke {
  color: var(--paper);
  -webkit-text-stroke: 3px var(--ink);
  text-stroke: 3px var(--ink);
}

.section-title {
  font-family: var(--sans);
  font-weight: 900;
  font-size: clamp(22px, 4vw, 34px);
  margin: 48px 0 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-title::before {
  content: "";
  width: 28px;
  height: 28px;
  background: var(--red);
  border: var(--border);
  flex: none;
}

.section-title.blue::before { background: var(--blue); }
.section-title.green::before { background: var(--green); }
.section-title.pink::before { background: var(--pink); }
.section-title.purple::before { background: var(--purple); }
.section-title.yellow::before { background: var(--yellow); }

/* ---------- Hero ---------- */
.hero {
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--paper);
  margin-top: 24px;
  position: relative;
  overflow: hidden;
}

.hero canvas { display: block; width: 100%; height: 380px; }

.hero-tag {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--red);
  border: var(--border);
  box-shadow: 4px 4px 0 var(--ink);
  padding: 4px 14px;
  font-family: var(--mono);
  font-weight: 700;
  transform: rotate(2deg);
}

.hero-caption {
  border-top: var(--border);
  padding: 14px 20px;
  font-size: 18px;
  font-weight: 700;
  background: var(--yellow);
}

/* ---------- 卡片 ---------- */
.card {
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--paper);
  padding: 18px 20px;
  transition: transform 0.12s, box-shadow 0.12s;
  transform-style: preserve-3d;
}

a.card, .card.clickable { text-decoration: none; display: block; cursor: pointer; }

a.card:hover, .card.clickable:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-hover);
}

.card h3 {
  margin: 0 0 8px;
  font-family: var(--sans);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.3;
}

.card p { margin: 6px 0; font-size: 14px; }

.card .meta {
  font-family: var(--mono);
  font-size: 12px;
  opacity: 0.75;
}

.grid { display: grid; gap: 20px; margin-top: 16px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

/* 数字大卡 */
.num-card {
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 16px 18px;
  background: var(--paper);
}

.num-card .num {
  font-family: var(--sans);
  font-weight: 900;
  font-size: 44px;
  line-height: 1;
}

.num-card .label { font-size: 14px; font-weight: 700; margin-top: 6px; }

.num-card.c-yellow { background: var(--yellow); }
.num-card.c-red { background: var(--red); }
.num-card.c-blue { background: var(--blue); color: var(--paper); }
.num-card.c-green { background: var(--green); }
.num-card.c-pink { background: var(--pink); }
.num-card.c-purple { background: var(--purple); color: var(--paper); }

/* 分类入口大卡 */
.cat-card {
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 22px;
  text-decoration: none;
  display: block;
  transition: transform 0.12s, box-shadow 0.12s;
}

.cat-card:hover { transform: translate(-3px, -3px); box-shadow: var(--shadow-hover); }

.cat-card .cat-name {
  font-family: var(--sans);
  font-weight: 900;
  font-size: 26px;
}

.cat-card .cat-desc { font-size: 14px; margin-top: 6px; font-weight: 600; }

.cat-card.c-yellow { background: var(--yellow); }
.cat-card.c-red { background: var(--red); }
.cat-card.c-blue { background: var(--blue); color: var(--paper); }
.cat-card.c-green { background: var(--green); }
.cat-card.c-pink { background: var(--pink); }
.cat-card.c-purple { background: var(--purple); color: var(--paper); }

/* ---------- 标签 ---------- */
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  border: 2px solid var(--ink);
  padding: 1px 7px;
  margin: 2px 3px 2px 0;
  background: var(--paper);
}

.tag.t-yellow { background: var(--yellow); }
.tag.t-red { background: var(--red); }
.tag.t-blue { background: var(--blue); color: var(--paper); }
.tag.t-green { background: var(--green); }
.tag.t-pink { background: var(--pink); }
.tag.t-purple { background: var(--purple); }

/* ---------- 时间线 ---------- */
.timeline { border-left: 6px solid var(--ink); margin: 20px 0 20px 10px; padding-left: 24px; }

.timeline-item { position: relative; margin-bottom: 22px; }

.timeline-item::before {
  content: "";
  position: absolute;
  left: -37px;
  top: 4px;
  width: 18px;
  height: 18px;
  background: var(--yellow);
  border: var(--border);
}

.timeline-item:nth-child(3n)::before { background: var(--red); }
.timeline-item:nth-child(3n+1)::before { background: var(--blue); }

.timeline-item .t-phase {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
}

.timeline-item .t-title { font-weight: 900; font-size: 18px; font-family: var(--sans); }

.timeline-item .t-desc { font-size: 14px; }

/* ---------- 摘要头(详情页) ---------- */
.summary-head {
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--yellow);
  padding: 20px 24px;
  margin-bottom: 24px;
}

.summary-head h2 { margin: 0 0 8px; font-family: var(--sans); font-weight: 900; }

.summary-head .conclusions,
.summary-head .lessons { margin: 10px 0 0; padding-left: 0; list-style: none; }

.summary-head .conclusions li,
.summary-head .lessons li {
  border-left: 6px solid var(--ink);
  background: var(--paper);
  padding: 6px 12px;
  margin: 6px 0;
  font-size: 14px;
}

.summary-head .lessons li { border-left-color: var(--red); }

.block-label {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  margin-top: 14px;
  letter-spacing: 1px;
}

/* ---------- Markdown 渲染 ---------- */
.md-body h1, .md-body h2, .md-body h3, .md-body h4 {
  font-family: var(--sans);
  font-weight: 900;
  line-height: 1.3;
  margin: 1.2em 0 0.5em;
}

.md-body h1 { font-size: 30px; border-bottom: var(--border); padding-bottom: 8px; }
.md-body h2 { font-size: 24px; border-bottom: 3px solid var(--ink); padding-bottom: 6px; }
.md-body h3 { font-size: 20px; }
.md-body h4 { font-size: 17px; }

.md-body code {
  font-family: var(--mono);
  background: var(--yellow);
  border: 2px solid var(--ink);
  padding: 0 5px;
  font-size: 0.9em;
}

.md-body pre {
  background: var(--ink);
  color: var(--paper);
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 16px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
}

.md-body pre code { background: none; border: none; padding: 0; color: inherit; }

.md-body blockquote {
  border-left: 8px solid var(--red);
  background: var(--pink);
  margin: 16px 0;
  padding: 10px 18px;
  font-weight: 600;
}

.md-body table { border-collapse: collapse; margin: 16px 0; width: 100%; }

.md-body th, .md-body td {
  border: var(--border);
  padding: 8px 12px;
  text-align: left;
  font-size: 14px;
}

.md-body th { background: var(--blue); color: var(--paper); font-family: var(--mono); }
.md-body tr:nth-child(even) td { background: rgba(17,17,17,0.04); }

.md-body img {
  max-width: 100%;
  border: var(--border);
  box-shadow: var(--shadow);
}

.md-body a { font-weight: 700; text-decoration-thickness: 2px; }
.md-body hr { border: none; border-top: var(--border); margin: 24px 0; }

/* ---------- 代码视图(log/csv/typ) ---------- */
.code-view {
  background: var(--ink);
  color: var(--paper);
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 18px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.55;
  white-space: pre;
  overflow: auto;
  max-height: 70vh;
}

/* ---------- 画廊 ---------- */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 16px; }

.gallery figure {
  margin: 0;
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--paper);
  cursor: zoom-in;
  transition: transform 0.12s, box-shadow 0.12s;
}

.gallery figure:hover { transform: translate(-3px, -3px); box-shadow: var(--shadow-hover); }

.gallery img { display: block; width: 100%; }

.gallery figcaption {
  font-family: var(--mono);
  font-size: 12px;
  padding: 6px 10px;
  border-top: var(--border);
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(17, 17, 17, 0.92);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

/* hidden 属性必须压过 display:flex,否则灯箱会变成常驻的隐形点击拦截层 */
.lightbox[hidden] {
  display: none;
}

.lightbox img {
  max-width: 95%;
  max-height: 90vh;
  border: var(--border);
  box-shadow: 10px 10px 0 var(--yellow);
  background: var(--paper);
}

.lightbox-close {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 28px;
  font-family: var(--mono);
  background: var(--red);
  border: var(--border);
  box-shadow: 4px 4px 0 var(--paper);
  width: 48px;
  height: 48px;
  cursor: pointer;
  font-weight: 900;
}

/* ---------- JSON 浏览器 ---------- */
.jv-toolbar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin: 12px 0; }

.btn {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 14px;
  border: var(--border);
  background: var(--paper);
  box-shadow: 4px 4px 0 var(--ink);
  padding: 6px 16px;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.1s;
}

.btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--ink); }
.btn.active { background: var(--blue); color: var(--paper); }
.btn.btn-primary { background: var(--yellow); }

.progress {
  border: var(--border);
  height: 26px;
  background: var(--paper);
  box-shadow: 4px 4px 0 var(--ink);
  margin: 10px 0;
  display: none;
}

.progress .bar { height: 100%; width: 0; background: var(--green); }

.jv-tree {
  font-family: var(--mono);
  font-size: 13px;
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--paper);
  padding: 14px;
  overflow: auto;
  max-height: 70vh;
}

.jv-tree details { margin-left: 18px; }
.jv-tree summary { cursor: pointer; font-weight: 700; }
.jv-tree summary:hover { background: var(--yellow); }
.jv-tree .jv-leaf { margin-left: 18px; }
.jv-tree .jv-key { color: #7a3aa0; font-weight: 700; }
.jv-tree .jv-num { color: #1a5fb4; }
.jv-tree .jv-str { color: #a00000; }
.jv-tree .jv-bool { color: #b45400; }

.jv-chart {
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--paper);
  padding: 14px;
  margin: 14px 0;
}

.jv-chart .jv-chart-title {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 8px;
  word-break: break-all;
}

.jv-chart svg { display: block; width: 100%; height: auto; background: #fff; border: 2px solid var(--ink); }

.jv-legend { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; font-family: var(--mono); font-size: 12px; }
.jv-legend .swatch { display: inline-block; width: 14px; height: 14px; border: 2px solid var(--ink); margin-right: 4px; vertical-align: -2px; }

/* ---------- 全仓浏览器 ---------- */
.browser { display: grid; grid-template-columns: minmax(0, 260px) minmax(0, 1fr); gap: 20px; margin-top: 16px; }

.browser-tree {
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--paper);
  padding: 12px;
  align-self: start;
  font-family: var(--mono);
  font-size: 13px;
  max-height: 75vh;
  overflow: auto;
  position: sticky;
  top: 80px;
}

.browser-tree .bt-node { padding: 3px 6px; cursor: pointer; font-weight: 700; word-break: break-all; }
.browser-tree .bt-node:hover { background: var(--yellow); }
.browser-tree .bt-node.active { background: var(--blue); color: var(--paper); }
.browser-tree .bt-child { margin-left: 16px; }
.browser-tree .bt-count { opacity: 0.6; font-size: 11px; }

.search-box {
  width: 100%;
  font-family: var(--mono);
  font-size: 15px;
  padding: 10px 14px;
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--paper);
  outline: none;
}

.search-box:focus { background: #fff; }

.file-row {
  display: block;
  text-decoration: none;
  border: var(--border);
  box-shadow: 4px 4px 0 var(--ink);
  background: var(--paper);
  padding: 10px 14px;
  margin-bottom: 12px;
  transition: transform 0.1s, box-shadow 0.1s;
}

.file-row:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--ink); background: #fff; }

.file-row .fr-title { font-weight: 900; font-size: 15px; }
.file-row .fr-path { font-family: var(--mono); font-size: 12px; opacity: 0.7; word-break: break-all; }
.file-row .fr-summary { font-size: 13px; margin-top: 4px; }
.file-row .fr-meta { font-family: var(--mono); font-size: 11px; margin-top: 4px; }

.file-row.skipped { background: repeating-linear-gradient(-45deg, var(--paper), var(--paper) 8px, rgba(17,17,17,0.06) 8px, rgba(17,17,17,0.06) 16px); }
.file-row.skipped .fr-title { opacity: 0.6; }

/* ---------- 经验教训 ---------- */
.lesson-card {
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--paper);
  padding: 16px 20px;
  margin-bottom: 18px;
  border-left: 12px solid var(--red);
}

.lesson-card:nth-child(4n+1) { border-left-color: var(--blue); }
.lesson-card:nth-child(4n+2) { border-left-color: var(--green); }
.lesson-card:nth-child(4n+3) { border-left-color: var(--purple); }

.lesson-card .lesson-text { font-weight: 700; font-size: 16px; }
.lesson-card .lesson-src { font-family: var(--mono); font-size: 12px; margin-top: 8px; }

/* ---------- reveal 动画 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.4s ease-out, transform 0.4s ease-out; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ---------- 空状态 / 提示 ---------- */
.notice {
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--pink);
  padding: 16px 20px;
  font-weight: 700;
  margin: 16px 0;
}

/* ---------- 页脚 ---------- */
.footer {
  border-top: var(--border);
  background: var(--ink);
  color: var(--paper);
  padding: 24px 20px;
  text-align: center;
  font-size: 14px;
}

.footer p { margin: 4px 0; }
.footer strong { color: var(--red); }
.footer-sub { font-family: var(--mono); font-size: 12px; opacity: 0.7; }

/* ---------- 移动端 ---------- */
@media (max-width: 860px) {
  .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .browser { grid-template-columns: 1fr; }
  .browser-tree { position: static; max-height: 40vh; }
  .hero canvas { height: 260px; }
}

@media (max-width: 560px) {
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; }
  .nav a { font-size: 12px; padding: 3px 8px; }
  .num-card .num { font-size: 32px; }
  /* 海报标题:窄屏缩字、减描边、加行距,避免描边字叠行 */
  .poster { font-size: clamp(28px, 9vw, 40px); line-height: 1.3; letter-spacing: 0; }
  .poster .stroke { -webkit-text-stroke-width: 2px; }
  .view { padding: 16px 12px 48px; }
  .hero canvas { height: 220px; }
  .hero-caption { font-size: 15px; padding: 12px 14px; }
  /* 导读组件窄屏适配 */
  .guide-cta-title { font-size: 18px; }
  .chapter-head h2 { font-size: 20px; }
  .chapter-p { font-size: 15px; }
  .takeaway-box { font-size: 15px; }
  .tree-head h2 { font-size: 20px; }
  .num-chip { font-size: 13px; padding: 6px 10px; }
}

/* ---------- 尊重减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .marquee-track { animation: none; }
  .view.page-enter, .view.page-exit { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .card, .cat-card, .file-row, .btn, .nav a, .gallery figure { transition: none; }
}

/* ================= 实验表格(新粗野主义) ================= */
.lede {
  font-size: 17px;
  line-height: 1.8;
  max-width: 900px;
  margin: 12px 0 24px;
  font-weight: 500;
}

.tree-head {
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 20px 24px;
  margin: 32px 0 16px;
}
.tree-head h2 { margin: 0 0 6px; font-size: 26px; }
.tree-head .meta { font-family: var(--mono); font-size: 12px; margin-bottom: 10px; }
.tree-head .tree-question { font-weight: 800; font-size: 16px; margin: 8px 0; }
.tree-head .tree-note { line-height: 1.75; margin: 8px 0 0; }
.tree-yellow { background: var(--yellow); }
.tree-pink { background: var(--pink); }

.btable-wrap {
  overflow-x: auto;
  border: var(--border);
  box-shadow: var(--shadow);
  background: #fff;
  margin-bottom: 24px;
}
.btable { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 760px; }
.btable th {
  background: var(--ink);
  color: var(--yellow);
  text-align: left;
  padding: 10px 14px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 1px;
  white-space: nowrap;
}
.btable td {
  border-top: 2px solid var(--ink);
  padding: 12px 14px;
  vertical-align: top;
  line-height: 1.65;
}
.btable tbody tr:nth-child(even) { background: #f5f0e8; }
.btable tr.clickable-row { cursor: pointer; }
.btable tr.clickable-row:hover { background: var(--yellow); }
.btable tr.clickable-row:hover td { border-top-color: var(--ink); }
.btable .col-name { width: 22%; }
.btable .col-name strong { font-size: 15px; display: block; margin-bottom: 4px; }
.btable .col-name .meta { font-family: var(--mono); font-size: 11px; word-break: break-all; }
.btable .col-what { width: 38%; }
.btable .col-result { width: 30%; }
.btable .col-num {
  width: 10%;
  font-family: var(--mono);
  font-size: 12px;
  white-space: pre-line;
  text-align: right;
}
.btable .col-result .meta { font-family: var(--mono); font-size: 11px; margin-top: 4px; }
.mini-list { margin: 0; padding-left: 18px; }
.mini-list li { margin-bottom: 5px; }

/* ================= 导读页 ================= */
.guide-cta {
  display: block;
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--red);
  color: var(--ink);
  padding: 22px 26px;
  margin: 24px 0;
  text-decoration: none;
  transition: transform .15s, box-shadow .15s;
}
.guide-cta:hover { transform: translate(-3px, -3px); box-shadow: var(--shadow-hover); }
.guide-cta-title { font-size: 24px; font-weight: 900; margin-bottom: 6px; }
.guide-cta-sub { font-size: 14px; font-weight: 600; line-height: 1.6; }

.guide-toc {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin: 8px 0 28px;
}
.guide-toc-chip {
  border: 2px solid var(--ink);
  background: #fff;
  padding: 6px 12px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform .12s, box-shadow .12s;
}
.guide-toc-chip:hover { transform: translate(-2px,-2px); box-shadow: 5px 5px 0 var(--ink); background: var(--yellow); }

.chapter {
  border: var(--border);
  box-shadow: var(--shadow);
  background: #fff;
  padding: 26px 30px;
  margin-bottom: 32px;
  scroll-margin-top: 90px;
}
.chapter-head { margin-bottom: 14px; }
.chapter-no {
  display: inline-block;
  background: var(--ink); color: var(--yellow);
  font-family: var(--mono); font-size: 12px; font-weight: 700;
  padding: 4px 10px; margin-bottom: 10px; letter-spacing: 2px;
}
.chapter-head h2 { margin: 0 0 4px; font-size: 26px; line-height: 1.35; }
.chapter-sub { font-family: var(--mono); font-size: 13px; font-weight: 700; opacity: .75; }
.chapter-p { line-height: 1.9; font-size: 16px; margin: 12px 0; }
.chapter.ch-yellow { border-top: 12px solid var(--yellow); }
.chapter.ch-blue { border-top: 12px solid var(--blue); }
.chapter.ch-green { border-top: 12px solid var(--green); }
.chapter.ch-pink { border-top: 12px solid var(--pink); }
.chapter.ch-purple { border-top: 12px solid var(--purple); }

.analogy-box {
  border: 2px dashed var(--ink);
  background: var(--yellow);
  padding: 14px 18px;
  margin: 16px 0;
}
.analogy-box p { line-height: 1.8; margin: 6px 0 0; }

.num-chips { display: flex; flex-wrap: wrap; gap: 10px; margin: 8px 0 12px; }
.num-chip {
  border: 2px solid var(--ink);
  background: var(--yellow);
  font-family: var(--mono);
  font-weight: 900;
  font-size: 15px;
  padding: 8px 14px;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform .12s, box-shadow .12s, background .12s;
}
.num-chip:hover { transform: translate(-2px,-2px); box-shadow: 5px 5px 0 var(--ink); }
.num-chip.on { background: var(--ink); color: var(--yellow); }
.num-explain {
  border: var(--border);
  background: #fff;
  box-shadow: var(--shadow);
  padding: 16px 20px;
  margin-bottom: 16px;
}
.num-explain strong { display: block; font-size: 16px; margin-bottom: 8px; }
.num-explain p { line-height: 1.85; margin: 0; }

.reflection-box {
  border: var(--border);
  background: var(--ink);
  color: #f5f0e8;
  box-shadow: 6px 6px 0 var(--purple);
  padding: 18px 22px;
  margin: 18px 0;
}
.reflection-box .block-label { color: var(--yellow); }
.reflection-list { margin: 8px 0 0; padding-left: 22px; }
.reflection-list li { line-height: 1.85; margin-bottom: 10px; }

.guide-links { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; margin: 8px 0 16px; }
.guide-link {
  border: 2px solid var(--ink);
  background: #fff;
  box-shadow: 4px 4px 0 var(--ink);
  padding: 12px 16px;
  text-decoration: none;
  color: var(--ink);
  transition: transform .12s, box-shadow .12s, background .12s;
}
.guide-link:hover { transform: translate(-2px,-2px); box-shadow: 6px 6px 0 var(--ink); background: var(--green); }
.guide-link strong { display: block; font-size: 15px; margin-bottom: 4px; }
.guide-link .meta { font-family: var(--mono); font-size: 11px; margin-bottom: 6px; word-break: break-all; }
.guide-link p { font-size: 13px; line-height: 1.7; margin: 0; }

.takeaway-box {
  background: var(--ink);
  color: var(--yellow);
  font-weight: 900;
  font-size: 17px;
  padding: 14px 20px;
  margin-top: 18px;
  display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap;
}
.takeaway-label { font-family: var(--mono); font-size: 12px; letter-spacing: 2px; color: #f5f0e8; }

.readmap { border: var(--border); box-shadow: var(--shadow); background: #fff; margin-bottom: 24px; }
.readmap-row {
  display: grid;
  grid-template-columns: minmax(180px, 32%) 1fr;
  gap: 14px;
  padding: 10px 16px;
  text-decoration: none;
  color: var(--ink);
  border-top: 2px solid var(--ink);
  font-size: 14px;
  align-items: baseline;
}
.readmap-row:first-child { border-top: none; }
.readmap-row:nth-child(even) { background: #f5f0e8; }
.readmap-row:hover { background: var(--yellow); }
.readmap-row span { line-height: 1.6; }

@media (max-width: 720px) {
  .readmap-row { grid-template-columns: 1fr; gap: 2px; }
  .chapter { padding: 18px; }
}

/* 列表卡片摘要截断,避免文字墙(详情页不受影响) */
.grid .card > p {
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 长路径/长英文 token 在窄屏强制断行,修复横向溢出 */
.view a, .view code, .view .meta, .view td, .view li {
  overflow-wrap: anywhere;
  word-break: break-word;
}