/* 三国寻踪 · 全站样式（零依赖） */
:root {
  --paper: #F5F0E4;
  --paper-2: #EDE4D2;
  --card: #FBF7EC;
  --ink: #24211C;
  --ink-2: #5F584C;
  --ink-3: #8B8374;
  --red: #A63126;
  --red-soft: #C4554A;
  --gold: #B28C4A;
  --green: #35564C;
  --brown: #8B6A3A;
  --line: rgba(70, 60, 45, .16);
  --line-strong: rgba(70, 60, 45, .3);
  --night: #0B1722;
  --shadow: 0 8px 30px rgba(60, 48, 30, .09);
  --radius: 10px;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", "SimSun", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
}
body.theme-dark {
  --paper: #0B1722;
  --paper-2: #10202E;
  --card: #122536;
  --ink: #EFE7D6;
  --ink-2: #B3BEC7;
  --ink-3: #7E8E9B;
  --line: rgba(220, 205, 170, .16);
  --line-strong: rgba(220, 205, 170, .34);
  --shadow: 0 12px 40px rgba(0, 0, 0, .3);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  color: var(--ink);
  background-color: var(--paper);
  background-image: radial-gradient(rgba(120, 100, 70, .055) .6px, transparent .6px);
  background-size: 5px 5px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body::after {
  content: "";
  position: fixed;
  inset: auto 0 0 0;
  height: 220px;
  pointer-events: none;
  z-index: 0;
  opacity: .5;
  background: linear-gradient(to top, rgba(80, 72, 56, .18), rgba(80, 72, 56, 0));
  clip-path: polygon(0 100%, 0 72%, 8% 64%, 15% 76%, 24% 55%, 32% 70%, 41% 48%, 50% 68%, 59% 52%, 68% 72%, 77% 58%, 86% 74%, 94% 63%, 100% 70%, 100% 100%);
}
body.theme-dark::after { opacity: .28; background: linear-gradient(to top, rgba(120, 170, 190, .2), transparent); }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button { cursor: pointer; }
img, svg { max-width: 100%; }
.skip-link { position: absolute; left: -999px; top: 0; background: var(--red); color: #fff; padding: 8px 14px; z-index: 99; }
.skip-link:focus { left: 8px; top: 8px; }

/* ---------- header / footer ---------- */
.site-header { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.header-inner { max-width: 1180px; margin: 0 auto; padding: 10px 22px; display: flex; align-items: center; gap: 22px; }
.brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.brand-seal { width: 34px; height: 34px; display: grid; place-items: center; background: var(--red); color: #fff; font-family: var(--serif); font-size: 21px; border-radius: 3px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-family: var(--serif); font-size: 19px; letter-spacing: .08em; }
.brand-text small { color: var(--ink-3); font-size: 10px; letter-spacing: .05em; }
.main-nav { display: flex; gap: 16px; flex: 1 1 auto; flex-wrap: wrap; }
.main-nav a { font-size: 13px; color: var(--ink-2); padding: 4px 2px; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s; }
.main-nav a:hover, .main-nav a.is-active { color: var(--red); border-color: var(--red); }
.header-search { display: flex; gap: 6px; flex: 0 0 auto; }
.header-search input { width: 168px; padding: 7px 10px; border: 1px solid var(--line-strong); border-radius: 6px; background: var(--card); color: var(--ink); font-size: 12px; }
.header-search button { padding: 7px 12px; border: 1px solid var(--red); border-radius: 6px; background: var(--red); color: #fff; font-size: 12px; }
.app-shell { position: relative; z-index: 1; max-width: 1180px; margin: 0 auto; padding: 34px 22px 80px; min-height: 66vh; }
.site-footer { position: relative; z-index: 1; border-top: 1px solid var(--line); padding: 26px 22px 34px; font-size: 12px; color: var(--ink-2); }
.footer-inner { max-width: 1180px; margin: 0 auto; display: flex; flex-wrap: wrap; gap: 10px 26px; align-items: center; }
.footer-inner strong { font-family: var(--serif); font-size: 16px; }
.footer-dot { margin: 0 8px; color: var(--red); }
.footer-links { display: flex; gap: 16px; margin-left: auto; }
.footer-links a:hover { color: var(--red); }
.footer-inner small { flex: 1 0 100%; color: var(--ink-3); }
.loading-state { text-align: center; padding: 90px 0; color: var(--ink-3); }
.loading-seal { display: inline-grid; place-items: center; width: 54px; height: 54px; background: var(--red); color: #fff; font-family: var(--serif); font-size: 30px; border-radius: 4px; animation: breathe 1.6s ease-in-out infinite; }
@keyframes breathe { 50% { opacity: .55; transform: scale(.94); } }
.error-state { padding: 30px; border: 1px solid var(--red); border-radius: var(--radius); background: var(--card); }

/* ---------- shared components ---------- */
.chapter-head { display: flex; align-items: center; gap: 10px; margin-bottom: 26px; }
.seal { display: inline-grid; place-items: center; width: 28px; height: 28px; background: var(--red); color: #fff; font-family: var(--serif); font-size: 17px; border-radius: 3px; flex: 0 0 auto; }
.seal--gold { background: var(--gold); }
.seal--green { background: var(--green); }
.seal--brown { background: var(--brown); }
.chapter-head .chapter-name { font-size: 13px; color: var(--ink-2); letter-spacing: .12em; }
.progress-dashes { margin-left: auto; height: 2px; width: 150px; background: repeating-linear-gradient(to right, var(--line-strong) 0 8px, transparent 8px 14px); position: relative; }
.progress-dashes i { position: absolute; left: 0; top: -1px; height: 4px; background: var(--red); display: block; }
.eyebrow { font-size: 13px; color: var(--ink-2); letter-spacing: .08em; margin: 0 0 12px; display: flex; align-items: center; gap: 8px; }
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--red); display: inline-block; }
.display-title { font-family: var(--serif); font-size: clamp(30px, 5vw, 52px); line-height: 1.28; font-weight: 600; margin: 0 0 16px; letter-spacing: .02em; }
.display-title .accent { color: var(--red); }
.lead { font-size: 15px; color: var(--ink-2); max-width: 640px; margin: 0 0 24px; }
.big-number { font-family: var(--serif); font-size: clamp(48px, 9vw, 92px); line-height: 1; color: var(--gold); font-weight: 600; letter-spacing: -.02em; }
.big-number small { font-family: var(--sans); font-size: 14px; color: var(--ink-2); margin-left: 8px; letter-spacing: 0; }
.closing { text-align: center; color: var(--red); font-family: var(--serif); font-size: 19px; letter-spacing: .08em; margin: 66px 0 8px; }
.closing::before, .closing::after { content: ""; display: inline-block; width: 26px; height: 1px; background: var(--line-strong); vertical-align: middle; margin: 0 14px; }
.divider { height: 1px; background: var(--line); margin: 34px 0; border: 0; }
.section-title { font-family: var(--serif); font-size: 24px; margin: 44px 0 18px; display: flex; align-items: baseline; gap: 12px; }
.section-title small { font-family: var(--sans); font-size: 12px; color: var(--ink-3); font-weight: 400; }
.muted { color: var(--ink-3); }
.red { color: var(--red); }
.gold { color: var(--gold); }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.card-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.card h3 { font-family: var(--serif); font-size: 19px; margin: 0 0 8px; }
.card p { margin: 0; color: var(--ink-2); font-size: 13px; }
.tag { display: inline-flex; align-items: center; gap: 4px; font-size: 11px; padding: 2px 8px; border-radius: 3px; border: 1px solid; line-height: 1.7; white-space: nowrap; }
.tag--novel { color: var(--red); border-color: var(--red); background: color-mix(in srgb, var(--red) 9%, transparent); }
.tag--history { color: var(--green); border-color: var(--green); background: color-mix(in srgb, var(--green) 9%, transparent); }
.tag--legend { color: var(--brown); border-color: var(--brown); background: color-mix(in srgb, var(--brown) 10%, transparent); }
.tag--neutral { color: var(--ink-3); border-color: var(--line-strong); }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; }
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 6px; border: 1px solid var(--line-strong); background: transparent; color: var(--ink); font-size: 13px; transition: .2s; }
.btn:hover { border-color: var(--red); color: var(--red); }
.btn--primary { background: var(--red); border-color: var(--red); color: #fff; }
.btn--primary:hover { background: #8E2820; color: #fff; }
.btn--sm { padding: 5px 11px; font-size: 12px; }
.btn.is-active { background: var(--red); border-color: var(--red); color: #fff; }
.chip { display: inline-flex; align-items: center; gap: 5px; padding: 4px 10px; border: 1px solid var(--line-strong); border-radius: 20px; font-size: 12px; background: var(--card); }
.chip:hover { border-color: var(--red); color: var(--red); }
.chip.is-active { border-color: var(--red); background: var(--red); color: #fff; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 20px; }
.paper-panel { background: var(--card); border: 1px solid var(--line-strong); border-radius: 8px; box-shadow: var(--shadow); overflow: hidden; }
.panel-bar { display: flex; align-items: center; gap: 5px; padding: 8px 12px; border-bottom: 1px solid var(--line); background: var(--paper-2); }
.panel-bar i { width: 8px; height: 8px; border-radius: 50%; background: #D8A79E; display: inline-block; }
.panel-bar i:nth-child(2) { background: #D9C38E; }
.panel-bar i:nth-child(3) { background: #9FB8A6; }
.panel-bar span { margin-left: 10px; font-size: 11px; color: var(--ink-3); }
.panel-body { padding: 18px; }
.notice { border-left: 3px solid var(--gold); background: color-mix(in srgb, var(--gold) 8%, transparent); padding: 12px 16px; font-size: 13px; color: var(--ink-2); border-radius: 0 6px 6px 0; margin: 18px 0; }
.notice strong { color: var(--ink); }

/* ---------- illustrations ---------- */
.illus { display: block; width: 100%; border-radius: 6px; overflow: hidden; background: #E8DCC4; }
img.illus { aspect-ratio: 4 / 3; object-fit: cover; }
.illus-label { display: block; font-size: 10px; color: var(--ink-3); text-align: right; margin-top: 4px; letter-spacing: .04em; }
.hero-illus { position: relative; border-radius: 8px; overflow: hidden; box-shadow: var(--shadow); }
.hero-illus .illus { border-radius: 0; }
.hero-illus-caption { position: absolute; left: 26px; top: 24px; color: #2A2118; text-shadow: 0 1px 8px rgba(255, 245, 220, .8); }
.hero-illus-caption h1 { font-family: var(--serif); font-size: clamp(28px, 5vw, 48px); margin: 0; line-height: 1.2; }
.hero-illus-caption p { margin: 8px 0 0; font-size: 13px; letter-spacing: .08em; }

/* ---------- home ---------- */
.home-hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 36px; align-items: center; padding: 20px 0 40px; }
.home-hero .hero-art { border-radius: 10px; overflow: hidden; box-shadow: var(--shadow); }
.home-hero .big-number { font-size: 68px; }
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 34px 0; }
.stat { border-top: 1px solid var(--line-strong); padding-top: 12px; }
.stat b { display: block; font-family: var(--serif); font-size: 34px; color: var(--gold); line-height: 1.1; }
.stat span { font-size: 12px; color: var(--ink-2); }
.path-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 18px 0 10px; }
.path-card { display: block; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); transition: .2s; }
.path-card:hover { transform: translateY(-3px); border-color: var(--red); box-shadow: var(--shadow); }
.path-card b { display: block; font-family: var(--serif); font-size: 20px; margin-bottom: 6px; }
.path-card span { font-size: 12px; color: var(--ink-2); }
.entry-list { display: flex; flex-direction: column; gap: 10px; margin: 18px 0; }
.entry-item { display: grid; grid-template-columns: 42px 1fr 1.1fr 120px; gap: 16px; align-items: center; padding: 14px 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); transition: .2s; }
.entry-item:hover { border-color: var(--red); transform: translateX(3px); }
.entry-item .entry-name { font-family: var(--serif); font-size: 20px; }
.entry-item .entry-name small { display: block; font-family: var(--sans); font-size: 11px; color: var(--ink-3); }
.entry-item .entry-desc { font-size: 12px; color: var(--ink-2); }
.entry-item .entry-num { font-family: var(--serif); font-size: 24px; color: var(--gold); text-align: right; }
.today-card { display: grid; grid-template-columns: 1fr 1.2fr; gap: 20px; align-items: center; }

/* ---------- story ---------- */
.chapter-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 16px; }
.chapter-card { display: block; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: var(--card); transition: .22s; }
.chapter-card:hover { transform: translateY(-4px) rotate(-.4deg); box-shadow: var(--shadow); border-color: var(--red); }
.chapter-card:nth-child(3n) { transform: translateY(6px); }
.chapter-card:nth-child(3n):hover { transform: translateY(2px); }
.chapter-card .illus { aspect-ratio: 4 / 3; object-fit: cover; }
.cc-body { padding: 10px 12px 14px; }
.cc-no { font-size: 10px; color: #fff; background: var(--ink); padding: 2px 6px; border-radius: 2px; display: inline-block; margin-bottom: 8px; }
.cc-title { font-family: var(--serif); font-size: 14px; line-height: 1.5; margin: 0; }
.cc-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 8px; font-size: 10px; color: var(--ink-3); }
.chapter-detail { display: grid; grid-template-columns: 1fr 290px; gap: 30px; align-items: start; }
.guide-text { font-size: 16px; line-height: 2.05; font-family: var(--serif); color: var(--ink); }
.guide-text p { margin: 0 0 18px; }
.placeholder-guide { border: 1px dashed var(--line-strong); border-radius: 8px; padding: 26px; text-align: center; color: var(--ink-3); font-size: 13px; background: var(--paper-2); }
.side-box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; margin-bottom: 16px; }
.side-box h3 { font-family: var(--serif); font-size: 17px; margin: 0 0 12px; }
.side-box ul { list-style: none; padding: 0; margin: 0; font-size: 13px; }
.side-box li { padding: 6px 0; border-bottom: 1px dashed var(--line); }
.side-box li:last-child { border: 0; }
.question-box { border-left: 3px solid var(--red); padding: 12px 16px; background: color-mix(in srgb, var(--red) 6%, transparent); font-family: var(--serif); font-size: 17px; margin: 22px 0; }
.prev-next { display: flex; justify-content: space-between; gap: 12px; margin-top: 32px; }
.phase-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 20px 0; }
.phase { border-top: 3px solid var(--gold); padding: 14px 16px; background: var(--card); border-radius: 0 0 8px 8px; }
.phase b { font-family: var(--serif); font-size: 19px; display: block; margin-bottom: 8px; }
.phase p { font-size: 13px; color: var(--ink-2); margin: 0; }
.viewpoint-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px; }
.viewpoint { background: var(--card); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.viewpoint .portrait { height: 168px; display: grid; place-items: center; background: linear-gradient(160deg, #E9DCC0, #D6C5A4); overflow: hidden; }
.viewpoint .portrait .portrait-img { height: 100%; }
.viewpoint .portrait svg { width: 80px; height: 110px; }
.viewpoint-body { padding: 14px; }
.viewpoint-body b { font-family: var(--serif); font-size: 19px; }
.viewpoint-body p { font-size: 12px; color: var(--ink-2); margin: 8px 0 0; min-height: 54px; }

/* ---------- people ---------- */
.people-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; }
.person-card { display: grid; grid-template-columns: 56px 1fr; gap: 12px; padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); transition: .2s; }
.person-card:hover { border-color: var(--red); transform: translateY(-2px); }
.person-thumb { width: 56px; height: 74px; border-radius: 6px; overflow: hidden; background: linear-gradient(160deg, #E9DCC0, #D6C5A4); }
.person-thumb .portrait-img { width: 100%; height: 100%; object-fit: cover; object-position: center top; }
.person-thumb svg { width: 42px; height: 60px; margin: 6px auto; display: block; }
.person-card-body { min-width: 0; }
.person-card-body b { font-family: var(--serif); font-size: 18px; }
.person-card-body .zi { font-size: 11px; color: var(--ink-3); margin-left: 6px; }
.person-card-body p { font-size: 12px; color: var(--ink-2); margin: 6px 0 10px; }
.portrait-img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center top; }
.person-hero { display: grid; grid-template-columns: 160px 1fr; gap: 24px; align-items: center; }
.person-hero .portrait { border-radius: 8px; background: linear-gradient(160deg, #E9DCC0, #D6C5A4); display: grid; place-items: center; height: auto; aspect-ratio: 3 / 4; overflow: hidden; max-width: 220px; width: 100%; }
.person-hero .portrait .portrait-img { height: 100%; }
.person-hero .portrait svg { width: 96px; height: 140px; }
.relation-list { display: grid; gap: 8px; }
.relation-item { display: flex; align-items: center; gap: 10px; padding: 10px 12px; background: var(--card); border: 1px solid var(--line); border-radius: 6px; font-size: 13px; }
.rel-avatar { flex-shrink: 0; width: 38px; height: 38px; border-radius: 50%; overflow: hidden; border: 1px solid var(--line); background: linear-gradient(160deg, #E9DCC0, #D6C5A4); }
.rel-avatar .portrait-img { width: 100%; height: 100%; }
.rel-avatar svg { width: 30px; height: 42px; margin: -4px auto 0; display: block; }
.relation-item .rel-type { color: var(--ink-3); font-size: 11px; min-width: 46px; }
.relation-item .rel-note { margin-left: auto; color: var(--ink-3); font-size: 11px; text-align: right; }
.star-cta { display: grid; grid-template-columns: 1fr 220px; gap: 20px; align-items: center; padding: 24px; border-radius: 10px; background: var(--night); color: #EFE7D6; margin: 26px 0; }
.star-cta h3 { font-family: var(--serif); font-size: 26px; margin: 0 0 8px; }
.star-cta p { color: #A9B9C4; font-size: 13px; margin: 0 0 16px; }
.star-cta .btn { color: #fff; border-color: rgba(255,255,255,.4); }

/* ---------- star map ---------- */
.star-page { color: #EFE7D6; }
.star-page .display-title { color: #EFE7D6; }
.star-page .lead { color: #A9B9C4; }
.star-page .eyebrow { color: #C9B77E; justify-content: center; }
.star-page .eyebrow::before { background: #C9B77E; }
.star-center { text-align: center; }
.star-wrap { position: relative; width: min(560px, 90vw); aspect-ratio: 1; margin: 18px auto 8px; }
.star-canvas { width: 100%; height: 100%; display: block; cursor: grab; touch-action: none; }
.star-canvas:active { cursor: grabbing; }
.star-hint { font-size: 11px; color: #8298A8; text-align: center; }
.star-stats { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 16px 0 6px; }
.star-pill { border: 1px solid rgba(200, 180, 130, .45); background: rgba(8, 20, 30, .8); color: #E4D6B4; border-radius: 20px; padding: 6px 14px; font-size: 12px; }
.star-pill.is-active { background: #C9B77E; color: #0B1722; border-color: #C9B77E; }
.star-pill:hover { border-color: #C9B77E; }
.star-toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: center; margin: 14px 0; font-size: 12px; color: #A9B9C4; }
.star-toolbar input[type=range] { width: 180px; accent-color: #C9B77E; }
.star-toolbar .btn { color: #EFE7D6; border-color: rgba(220,205,170,.35); }
.star-selected { max-width: 620px; margin: 20px auto 0; padding: 18px; border: 1px solid rgba(200,180,130,.3); border-radius: 10px; background: rgba(10, 24, 36, .6); }
.star-card { display: flex; gap: 16px; align-items: flex-start; }
.star-card-main { min-width: 0; flex: 1; }
.star-avatar { flex-shrink: 0; width: 84px; height: 112px; border-radius: 8px; overflow: hidden; border: 1px solid rgba(200,180,130,.35); background: rgba(20, 40, 55, .5); }
.star-avatar .portrait-img { width: 100%; height: 100%; }
.star-avatar svg { width: 56px; height: 78px; margin: 8px auto 0; display: block; opacity: .8; }
.star-selected h3 { font-family: var(--serif); font-size: 22px; margin: 0 0 6px; color: #E4D6B4; }
.star-selected p { font-size: 13px; color: #A9B9C4; margin: 0 0 12px; }
.star-fallback { text-align: left; padding: 20px; }

/* ---------- map ---------- */
.map-frame { border: 1px solid var(--line-strong); border-radius: 8px; overflow: hidden; background: #E6D8B8; }
.map-svg { display: block; width: 100%; height: auto; }
.map-controls { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; padding: 14px 18px; background: var(--card); border-bottom: 1px solid var(--line); }
.map-controls label { font-size: 12px; color: var(--ink-2); display: flex; align-items: center; gap: 6px; }
.map-controls select { padding: 5px 8px; border: 1px solid var(--line-strong); border-radius: 5px; background: var(--paper); color: var(--ink); font-size: 12px; }
.year-row { display: flex; align-items: center; gap: 16px; margin: 18px 0; }
.year-row input[type=range] { flex: 1; accent-color: var(--red); }
.year-display { font-family: var(--serif); font-size: 40px; color: var(--gold); line-height: 1; min-width: 92px; }
.year-meta { font-size: 13px; color: var(--ink-2); }
.timeline-strip { display: flex; gap: 8px; overflow-x: auto; padding: 10px 0 16px; }
.timeline-item { flex: 0 0 auto; min-width: 132px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 6px; background: var(--card); font-size: 11px; }
.timeline-item b { display: block; font-family: var(--serif); font-size: 17px; color: var(--gold); }
.timeline-item.is-current { border-color: var(--red); background: color-mix(in srgb, var(--red) 7%, var(--card)); }
.timeline-item span { color: var(--ink-2); }
.footprint-legend { display: flex; flex-wrap: wrap; gap: 12px; font-size: 12px; color: var(--ink-2); margin: 10px 0; }
.footprint-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 5px; }

/* ---------- dialogue ---------- */
.dialogue-layout { display: grid; grid-template-columns: 300px 1fr; gap: 24px; align-items: start; }
.period-axis { display: flex; align-items: flex-start; gap: 0; margin: 22px 0 30px; position: relative; }
.period-axis::before { content: ""; position: absolute; left: 8%; right: 8%; top: 9px; height: 2px; background: var(--line-strong); }
.period-node { flex: 1; text-align: center; position: relative; z-index: 1; font-size: 12px; }
.period-node i { display: block; width: 12px; height: 12px; border-radius: 50%; background: var(--paper); border: 2px solid var(--line-strong); margin: 3px auto 10px; }
.period-node.is-active i { background: var(--red); border-color: var(--red); }
.period-node b { display: block; font-family: var(--serif); font-size: 18px; }
.period-node span { color: var(--ink-3); }
.chat-window { min-height: 320px; display: flex; flex-direction: column; gap: 12px; }
.chat-row { display: flex; gap: 8px; align-items: flex-start; max-width: 100%; }
.chat-avatar { flex-shrink: 0; width: 36px; height: 36px; border-radius: 50%; overflow: hidden; border: 1px solid var(--line); background: linear-gradient(160deg, #E9DCC0, #D6C5A4); }
.chat-avatar .portrait-img { width: 100%; height: 100%; }
.chat-avatar svg { width: 28px; height: 40px; margin: -3px auto 0; display: block; }
.chat-bubble { max-width: 78%; padding: 12px 16px; border-radius: 10px; font-size: 14px; }
.chat-bubble.user { align-self: flex-end; background: color-mix(in srgb, var(--gold) 18%, var(--card)); border: 1px solid var(--line); }
.chat-bubble.answer { align-self: flex-start; background: var(--card); border: 1px solid var(--red-soft); }
.chat-bubble .speaker { font-size: 11px; color: var(--red); letter-spacing: .05em; margin-bottom: 6px; }
.chat-empty { color: var(--ink-3); font-size: 13px; text-align: center; padding: 40px 0; }
.answer-detail { margin-top: 12px; border-top: 1px dashed var(--line); padding-top: 10px; font-size: 12px; color: var(--ink-2); }
.answer-detail b { color: var(--ink); }
.answer-detail ul { margin: 6px 0; padding-left: 18px; }
.q-list { display: grid; gap: 8px; }
.q-item { text-align: left; padding: 10px 12px; border: 1px solid var(--line); border-radius: 6px; background: var(--card); font-size: 13px; }
.q-item:hover { border-color: var(--red); color: var(--red); }
.knowledge-cut { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; border-radius: 20px; background: color-mix(in srgb, var(--red) 8%, transparent); color: var(--red); font-size: 12px; }

/* ---------- sources / search / about ---------- */
.seal-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 24px 0 30px; }
.seal-block { text-align: center; padding: 22px 10px; border-right: 1px solid var(--line); }
.seal-block:last-child { border: 0; }
.seal-block .big-seal { width: 74px; height: 74px; margin: 0 auto 14px; display: grid; place-items: center; font-family: var(--serif); font-size: 30px; color: #fff; border: 4px double rgba(255,255,255,.6); outline: 2px solid; border-radius: 5px; transform: rotate(-4deg); }
.seal-block .big-seal.novel { background: var(--red); outline-color: var(--red); }
.seal-block .big-seal.history { background: var(--green); outline-color: var(--green); transform: rotate(3deg); }
.seal-block .big-seal.legend { background: var(--brown); outline-color: var(--brown); transform: rotate(-2deg); }
.seal-block p { font-size: 12px; color: var(--ink-2); margin: 0; }
.source-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 14px; }
.source-card blockquote { margin: 10px 0; padding-left: 12px; border-left: 2px solid var(--gold); font-family: var(--serif); font-size: 15px; }
.source-card .ref { font-size: 11px; color: var(--ink-3); }
.source-card .note { font-size: 12px; color: var(--ink-2); margin-top: 10px; }
.index-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.search-input-row { display: flex; gap: 10px; margin: 18px 0 26px; }
.search-input-row input { flex: 1; padding: 12px 16px; border: 1px solid var(--line-strong); border-radius: 8px; background: var(--card); color: var(--ink); font-size: 15px; }
.result-group { margin-bottom: 26px; }
.result-group h3 { font-family: var(--serif); font-size: 19px; border-bottom: 1px solid var(--line); padding-bottom: 8px; }
.result-item { display: block; padding: 9px 4px; border-bottom: 1px dashed var(--line); font-size: 14px; }
.result-item:hover { color: var(--red); }
.result-item small { color: var(--ink-3); margin-left: 10px; font-size: 12px; }
.prose { max-width: 760px; font-size: 15px; line-height: 1.95; }
.prose h3 { font-family: var(--serif); font-size: 21px; margin: 30px 0 10px; }
.prose ul { padding-left: 20px; }
.prose code { background: var(--paper-2); padding: 2px 6px; border-radius: 4px; font-size: 12px; }
.stat-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.stat-table td, .stat-table th { padding: 9px 10px; border-bottom: 1px solid var(--line); text-align: left; }
.stat-table th { color: var(--ink-3); font-weight: 400; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .header-inner { flex-wrap: wrap; gap: 10px 16px; }
  .main-nav { order: 3; flex: 1 0 100%; gap: 12px; }
  .header-search { margin-left: auto; }
  .home-hero, .chapter-detail, .dialogue-layout, .person-hero, .star-cta, .today-card, .index-columns { grid-template-columns: 1fr; }
  .entry-item { grid-template-columns: 36px 1fr; }
  .entry-item .entry-desc, .entry-item .entry-num { grid-column: 2; text-align: left; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .phase-grid, .path-row, .seal-row { grid-template-columns: 1fr; }
  .seal-block { border-right: 0; border-bottom: 1px solid var(--line); }
  .app-shell { padding: 24px 16px 60px; }
  .display-title { font-size: 32px; }
}

/* ---------- 手机端适配 ---------- */
@media (max-width: 640px) {
  html { scroll-behavior: auto; }
  .skip-link:focus { left: 0; top: 0; }

  /* 顶栏：两行布局，导航横滑 */
  .header-inner { padding: 10px 14px 0; gap: 8px 12px; }
  .brand { min-width: 0; }
  .brand-seal { width: 30px; height: 30px; font-size: 18px; }
  .brand-text strong { font-size: 16px; letter-spacing: .04em; }
  .brand-text small { font-size: 9px; }
  .main-nav { order: 3; flex: 1 0 100%; flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; gap: 6px 18px; padding: 6px 0 10px; margin: 0 -14px; padding-left: 14px; padding-right: 14px; border-top: 1px solid var(--line); }
  .main-nav::-webkit-scrollbar { display: none; }
  .main-nav a { flex: 0 0 auto; font-size: 14px; padding: 6px 0; }
  .header-search { order: 2; flex: 1 1 auto; max-width: 46%; }
  .header-search input { flex: 1 1 auto; width: auto; min-width: 0; font-size: 14px; padding: 8px 10px; }
  .header-search button { padding: 8px 12px; font-size: 13px; }

  /* 主体 */
  .app-shell { padding: 20px 14px calc(52px + env(safe-area-inset-bottom)); }
  .site-footer { padding: 20px 16px calc(24px + env(safe-area-inset-bottom)); }
  .footer-links { margin-left: 0; }
  .display-title { font-size: 25px; line-height: 1.35; }
  .display-title .accent { display: inline; }
  .lead { font-size: 14px; }
  .big-number { font-size: 44px; }
  .big-number small { font-size: 12px; }
  .section-title { font-size: 20px; margin: 32px 0 14px; flex-wrap: wrap; gap: 6px; }
  .closing { font-size: 16px; margin: 44px 0 8px; }
  .home-hero { padding: 6px 0 22px; gap: 22px; }
  .home-hero .big-number { font-size: 44px; }
  .hero-illus-caption { left: 12px; right: 12px; top: 12px; }
  .hero-illus-caption h1 { font-size: 22px; }
  .hero-illus-caption p { font-size: 11px; }

  /* 网格降为两列/单列 */
  .card-grid { grid-template-columns: 1fr; }
  .chapter-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .chapter-card:nth-child(3n) { transform: none; }
  .cc-title { font-size: 12px; }
  .people-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .person-card { grid-template-columns: 44px 1fr; gap: 10px; padding: 10px; }
  .person-thumb { width: 44px; height: 58px; border-radius: 5px; }
  .person-thumb svg { width: 34px; height: 48px; }
  .person-card-body b { font-size: 15px; }
  .person-card-body p { font-size: 11px; margin: 4px 0 6px; }
  .person-hero { gap: 14px; }
  .person-hero .portrait { max-width: 200px; width: 100%; }
  .source-grid { grid-template-columns: 1fr; }
  .viewpoint-grid { grid-template-columns: 1fr; }
  .stat-row { gap: 10px; }
  .stat b { font-size: 26px; }
  .entry-item { padding: 12px 14px; }
  .entry-item .entry-name { font-size: 17px; }

  /* 组件 */
  .filter-bar { gap: 6px; }
  .btn--sm { padding: 8px 13px; font-size: 13px; }
  .chip { font-size: 12px; padding: 5px 11px; }
  .tag-row .tag { max-width: 100%; white-space: normal; }
  .guide-text { font-size: 15px; line-height: 1.95; }
  .prose { font-size: 14px; }
  .prev-next { flex-wrap: wrap; }
  .prev-next .btn { flex: 1 1 auto; justify-content: center; }
  .relation-item { flex-wrap: wrap; row-gap: 4px; }
  .relation-item .rel-note { margin-left: 0; width: 100%; text-align: left; }
  .question-box { font-size: 15px; }
  .notice { font-size: 12px; padding: 10px 12px; }

  /* 星图 / 地图 / 年表 */
  .star-wrap { width: min(330px, 94vw); }
  .star-toolbar input[type=range] { width: 150px; }
  .star-selected { padding: 14px; }
  .year-row { gap: 10px; }
  .year-display { font-size: 30px; min-width: 64px; }
  .timeline-item { min-width: 112px; }
  .map-controls { gap: 8px 12px; padding: 10px 12px; }

  /* 对话台 */
  .period-axis { overflow-x: auto; scrollbar-width: none; margin: 18px 0 22px; }
  .period-axis::-webkit-scrollbar { display: none; }
  .period-node { min-width: 64px; font-size: 11px; }
  .chat-bubble { max-width: 92%; font-size: 13px; }
  .chat-row .chat-bubble { max-width: calc(100% - 44px); }
  .chat-avatar { width: 30px; height: 30px; }
  .rel-avatar { width: 30px; height: 30px; }
  .rel-avatar svg { width: 24px; height: 34px; }
  .star-avatar { width: 64px; height: 86px; }
  .star-avatar svg { width: 44px; height: 62px; }
  .q-item { font-size: 13px; }

  /* 首页路径卡 / seal */
  .path-card b { font-size: 17px; }
  .progress-dashes { display: none; }
  .star-cta { padding: 18px; }
  .star-cta h3 { font-size: 21px; }
}
body.theme-dark .closing { color: #E6A79B; }
body.theme-dark .star-center .eyebrow { color: #C9B77E; justify-content: center; }
body.theme-dark .star-center .eyebrow::before { background: #C9B77E; }
body.theme-dark .star-center .lead { color: #A9B9C4; }
body.theme-dark .star-selected .chip { background: rgba(20, 40, 55, .8); border-color: rgba(220,205,170,.3); color: #EFE7D6; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}