/* 《当我没说》网页版 */
:root {
  --ink: #1f2933;
  --ink-soft: #52606d;
  --paper: #fdfcf8;
  --line: #e4e1d8;
  --blue: #2a5d78;
  --blue-soft: #eaf1f5;
  --orange: #c4620f;
  --orange-soft: #fbf0e4;
  --green: #3d7a4f;
  --green-soft: #ebf4ec;
  --flash: #fff1a8;
  --serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --kai: "LXGW WenKai", "Kaiti SC", "STKaiti", "KaiTi", serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 64px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.85;
}
a { color: var(--blue); }

/* 顶栏 */
.topbar {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; gap: 12px;
  padding: 8px 16px;
  background: rgba(253, 252, 248, .94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
  font-family: var(--sans);
}
.brand { font-weight: 700; font-size: 17px; color: var(--ink); text-decoration: none; margin-right: auto; }
.tb-btn {
  font: inherit; font-size: 15px;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  border-radius: 8px; padding: 5px 12px; cursor: pointer;
}
.tb-btn:hover { border-color: var(--blue); }
.tb-ask { background: var(--blue); color: #fff; border-color: var(--blue); }

/* 目录抽屉 */
.toc-drawer {
  position: fixed; z-index: 40; top: 49px; left: 0; bottom: 0;
  width: min(360px, 88vw); overflow-y: auto;
  background: #fff; border-right: 1px solid var(--line);
  box-shadow: 4px 0 20px rgba(0,0,0,.08);
  padding: 12px 8px 40px; font-family: var(--sans); font-size: 15px;
}
.toc { list-style: none; margin: 0; padding: 0; }
.toc li a { display: block; padding: 5px 10px; border-radius: 6px; color: var(--ink); text-decoration: none; line-height: 1.5; }
.toc li a:hover { background: var(--blue-soft); }
.toc li.current a { background: var(--blue-soft); font-weight: 700; }
.toc-part { margin: 14px 10px 4px; font-weight: 700; color: var(--blue); font-size: 14px; }
.toc-num { color: var(--ink-soft); margin-right: .6em; font-size: 13px; }

/* 正文 */
.page { max-width: 720px; margin: 0 auto; padding: 24px 20px 80px; }
.chapter h1 {
  font-family: var(--sans); font-size: 30px; line-height: 1.35;
  margin: 18px 0 28px; letter-spacing: .02em;
}
.ch-num { display: block; font-size: 16px; color: var(--blue); font-weight: 700; margin-bottom: 6px; letter-spacing: .1em; }
.part-label { font-family: var(--sans); color: var(--blue); font-weight: 700; font-size: 15px; margin-top: 8px; }
.part-label.dim { color: var(--ink-soft); font-weight: 400; }
.chapter h2 { font-family: var(--sans); font-size: 21px; margin: 40px 0 12px; line-height: 1.4; }
.chapter h3 { font-family: var(--sans); font-size: 18px; margin: 28px 0 8px; }
.chapter p { margin: 0 0 1em; text-align: justify; }
.chapter strong { font-family: var(--sans); font-weight: 700; }
.chapter blockquote {
  margin: 1.2em 0; padding: .3em 0 .3em 1em;
  border-left: 3px solid var(--blue); font-family: var(--kai); color: #2c3a47;
}
.chapter ul, .chapter ol { padding-left: 1.6em; }
.chapter li { margin: .25em 0; }
[data-anchor] { border-radius: 4px; transition: background-color .6s; }
.flash { background: var(--flash) !important; }

/* 表格 */
.table-wrap { overflow-x: auto; margin: 1.2em 0; }
.table-wrap table { border-collapse: collapse; margin: 0 auto; font-size: 16px; font-family: var(--sans); }
.table-wrap th, .table-wrap td { border-bottom: 1px solid var(--line); padding: 6px 12px; text-align: center; white-space: nowrap; }
.table-wrap thead th { border-bottom: 2px solid var(--ink-soft); }
.table-wrap td:first-child, .table-wrap th:first-child { text-align: left; }

/* 方框 */
.box {
  margin: 1.6em 0; padding: 14px 18px 6px;
  background: var(--blue-soft); border: 1px solid #c9dbe6; border-radius: 10px;
  font-size: 17px;
}
.box p { text-align: left; }
.box-title {
  display: inline-block; margin: -26px 0 8px; padding: 2px 10px;
  background: var(--blue); color: #fff; border-radius: 6px;
  font-family: var(--sans); font-size: 14px; font-weight: 700;
}
.box-try { background: var(--orange-soft); border-color: #efd3b5; }
.box-try .box-title { background: var(--orange); }
.box-term { background: var(--green-soft); border-color: #c8e0cd; }
.box-term .box-title { background: var(--green); }
details.answers { margin: 4px 0 10px; border-top: 1px dashed #e0c3a2; padding-top: 6px; }
details.answers summary { cursor: pointer; font-family: var(--sans); font-size: 15px; color: var(--orange); }
details.answers[open] summary { margin-bottom: 8px; }

/* 插图 */
figure.bookfig { margin: 1.8em 0; text-align: center; }
figure.bookfig img { max-width: 100%; height: auto; }
figure.bookfig figcaption {
  font-family: var(--kai); font-size: 15.5px; color: #3e4c59; line-height: 1.7;
  text-align: left; max-width: 560px; margin: 8px auto 0;
}
.fignum { font-family: var(--sans); font-weight: 700; margin-right: .8em; color: var(--blue); }

/* 公式 */
.katex { font-size: 1.06em; }
.katex-display { overflow-x: auto; overflow-y: hidden; padding: 4px 0; }

/* 翻页 */
.pager { display: flex; justify-content: space-between; gap: 16px; margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); font-family: var(--sans); font-size: 15px; }
.pager a { text-decoration: none; max-width: 48%; }
.pager .next { text-align: right; margin-left: auto; }

/* 模拟器外框 */
.widget-wrap { margin: 1.4em 0; }
.widget-intro { font-family: var(--sans); font-size: 15px; color: var(--ink-soft); margin-bottom: 6px !important; }

/* 封面 */
.cover .cover-block { text-align: center; padding: 56px 0 24px; }
.cover-title { font-family: var(--sans); font-size: 56px; margin: 0; letter-spacing: .08em; }
.cover-sub { font-family: var(--kai); font-size: 26px; margin: 10px 0 30px; }
.cover-line { color: var(--ink-soft); margin: 2px 0; font-size: 16px; }
.cover-start { margin-top: 30px; }
.btn { display: inline-block; background: var(--blue); color: #fff; text-decoration: none; padding: 10px 28px; border-radius: 999px; font-family: var(--sans); }
.howto, .toc-home { margin-top: 36px; }
.howto h2, .toc-home h2 { font-family: var(--sans); font-size: 20px; }
.howto li { margin: .4em 0; }
.toc-home .toc { font-family: var(--sans); font-size: 16px; }
.cover-foot { margin-top: 40px; font-family: var(--kai); color: var(--ink-soft); font-size: 15px; text-align: center; }

/* 选中文字后的“问 AI”小按钮 */
#sel-ask {
  position: absolute; z-index: 50;
  font-family: var(--sans); font-size: 14px;
  background: var(--ink); color: #fff; border: 0; border-radius: 8px;
  padding: 6px 12px; cursor: pointer; box-shadow: 0 4px 14px rgba(0,0,0,.2);
}

/* 提问面板 */
.ask-panel {
  position: fixed; z-index: 60; top: 0; right: 0; bottom: 0;
  width: min(440px, 100vw);
  background: #fff; border-left: 1px solid var(--line);
  box-shadow: -6px 0 24px rgba(0,0,0,.1);
  display: flex; flex-direction: column;
  font-family: var(--sans); font-size: 15.5px; line-height: 1.7;
}
.ask-panel[hidden] { display: none; }
.ask-head { display: flex; align-items: center; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.ask-head strong { margin-right: auto; font-size: 16px; }
.ask-close { border: 0; background: none; font-size: 22px; cursor: pointer; color: var(--ink-soft); line-height: 1; }
.ask-body { flex: 1; overflow-y: auto; padding: 12px 14px; }
.ask-note { color: var(--ink-soft); font-size: 13.5px; margin: 0 0 10px; }
.ask-quote { border-left: 3px solid var(--orange); background: var(--orange-soft); padding: 6px 10px; border-radius: 4px; font-family: var(--kai); font-size: 15px; margin: 0 0 10px; max-height: 140px; overflow-y: auto; }
.ask-quote-clear { font-size: 12.5px; margin-left: 6px; }
.ask-form textarea { width: 100%; min-height: 76px; resize: vertical; font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; }
.ask-row { display: flex; align-items: center; gap: 10px; margin-top: 8px; flex-wrap: wrap; }
.ask-row label { font-size: 14px; color: var(--ink-soft); display: flex; align-items: center; gap: 4px; }
.ask-send { margin-left: auto; background: var(--blue); color: #fff; border: 0; border-radius: 8px; padding: 7px 18px; font: inherit; cursor: pointer; }
.ask-send[disabled] { opacity: .5; cursor: wait; }
.ask-code input { font: inherit; padding: 6px 8px; border: 1px solid var(--line); border-radius: 6px; width: 10em; }
.ask-error { color: #b42318; font-size: 14px; }
.qa { border-top: 1px solid var(--line); padding: 12px 0 4px; }
.qa-q { font-weight: 700; margin-bottom: 4px; }
.qa-q .qa-sel { display: block; font-weight: 400; font-family: var(--kai); color: var(--ink-soft); font-size: 14px; }
.qa-a p { margin: 0 0 .6em; }
.qa-a .katex { font-size: 1.02em; }
.qa-status { font-size: 13px; color: var(--ink-soft); margin: 2px 0 6px; }
.qa-cites { display: flex; flex-direction: column; gap: 6px; margin: 6px 0 4px; }
.qa-cite { display: block; text-align: left; border: 1px solid var(--line); border-radius: 8px; padding: 6px 9px; background: #fafafa; cursor: pointer; font: inherit; font-size: 13.5px; color: var(--ink); }
.qa-cite:hover { border-color: var(--blue); }
.qa-cite b { color: var(--blue); margin-right: .4em; }
.qa-cite span { font-family: var(--kai); color: #3e4c59; }
.qa-loading { color: var(--ink-soft); }
.qa-loading::after { content: "…"; animation: dots 1.2s steps(3, end) infinite; }
@keyframes dots { 0% { content: ""; } 33% { content: "."; } 66% { content: ".."; } 100% { content: "..."; } }
.ask-foot { padding: 8px 14px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--ink-soft); }

@media (max-width: 600px) {
  body { font-size: 17px; }
  .page { padding: 16px 16px 72px; }
  .chapter h1 { font-size: 25px; }
  .cover-title { font-size: 44px; }
  .ask-panel { top: auto; height: 78vh; width: 100vw; border-left: 0; border-top: 1px solid var(--line); border-radius: 14px 14px 0 0; }
}
@media print {
  .topbar, .toc-drawer, .ask-panel, #sel-ask, .pager { display: none !important; }
}

/* ---------- 第二轮版式修改（看图审查后） ---------- */
.topbar { background: rgba(253, 252, 248, .985); }
.chapter p, .box p { text-align: start; }
.nobr { white-space: nowrap; }
.katex { font-size: 1.12em; }
figure.bookfig img { max-width: 100%; height: auto; }
.toc-backdrop { position: fixed; inset: 0; z-index: 35; background: rgba(20, 30, 40, .28); }
.toc-close { position: sticky; top: 0; float: right; width: 40px; height: 40px; border: 0; background: #fff; font-size: 24px; cursor: pointer; color: var(--ink-soft); }
.ask-close { width: 44px; height: 44px; font-size: 26px; margin-right: -10px; }
.ask-quote { max-height: 4.6em; }
.ask-quote.expanded { max-height: 240px; }
#sel-ask.sel-bottom { position: fixed; left: 50% !important; top: auto !important; bottom: 18px; transform: translateX(-50%); padding: 10px 22px; font-size: 16px; border-radius: 999px; }
details.answers[open] summary { color: var(--ink-soft); }
@media (min-width: 1200px) {
  body.panel-open .page { margin-left: max(20px, calc((100vw - 440px - 720px) / 2)); margin-right: 460px; }
}
@media (max-width: 600px) {
  .table-wrap table { font-size: 14px; }
  .table-wrap th, .table-wrap td { padding: 5px 6px; white-space: normal; min-width: 3.2em; }
  .katex-display { font-size: .92em; }
  .ask-panel { height: 82vh; }
}
.ask-close { font-size: 32px; line-height: 44px; }
.qa-cite span q, .qa-cite span { font-family: var(--kai); }