:root {
  --ink: #101512;
  --ink-soft: #1b231e;
  --paper: #eee9dc;
  --paper-deep: #d9d0bc;
  --jade: #8fb89e;
  --jade-bright: #c3e1cc;
  --cinnabar: #d64a32;
  --gold: #d8b45d;
  --muted: #8d968f;
  --line: rgba(238, 233, 220, .13);
  --radius: 3px;
  --shadow: 0 28px 80px rgba(0, 0, 0, .28);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; overflow-x: hidden; }

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--paper);
  background:
    radial-gradient(circle at 82% 8%, rgba(143, 184, 158, .11), transparent 25rem),
    linear-gradient(145deg, #0d110f 0%, #151c18 52%, #0c100e 100%);
  font-family: "LXGW WenKai", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .22;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.95' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.13'/%3E%3C/svg%3E");
}

.site-header {
  width: min(1440px, calc(100% - 48px));
  margin: 0 auto;
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 13px; color: inherit; text-decoration: none; }
.brand-seal {
  width: 42px; height: 42px; display: grid; place-items: center;
  color: var(--paper); background: var(--cinnabar); border-radius: 2px;
  font-family: "Songti SC", "STSong", serif; font-size: 25px;
  box-shadow: 6px 6px 0 rgba(214, 74, 50, .13);
}
.brand strong { display: block; font-family: "Songti SC", "STSong", serif; font-size: 21px; letter-spacing: .2em; }
.brand small { display: block; margin-top: -3px; color: var(--muted); font-size: 10px; letter-spacing: .16em; }
.system-status { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 12px; letter-spacing: .08em; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--jade); box-shadow: 0 0 0 5px rgba(143,184,158,.08); }

main { width: min(1440px, calc(100% - 48px)); margin: 0 auto; }
.hero { padding: 92px 0 72px; position: relative; }
.hero::after {
  content: "研"; position: absolute; right: 3%; top: 20px; z-index: -1;
  color: rgba(238,233,220,.025); font: 420px/1 "Songti SC", serif;
}
.eyebrow, .section-kicker { color: var(--jade); font: 11px/1.2 ui-monospace, "Cascadia Mono", monospace; letter-spacing: .22em; }
.hero h1 { margin: 22px 0; max-width: 850px; font: 700 clamp(54px, 8vw, 118px)/.98 "Songti SC", "STSong", serif; letter-spacing: -.055em; }
.hero h1 em { color: var(--cinnabar); font-style: normal; }
.hero-copy { max-width: 680px; color: #adb5af; font-size: 16px; }

.search-form { margin-top: 44px; max-width: 920px; }
.search-form label { display: block; margin-bottom: 10px; color: var(--paper-deep); font-size: 13px; }
.search-box { display: grid; grid-template-columns: 1fr auto; border-bottom: 1px solid rgba(238,233,220,.48); }
.search-box input {
  min-width: 0; min-height: 68px; padding: 0 18px 0 0; border: 0; outline: 0;
  color: var(--paper); background: transparent; font: 24px/1.2 "Songti SC", serif;
}
.search-box input::placeholder { color: #59635c; }
.search-box:focus-within { border-color: var(--jade-bright); box-shadow: 0 8px 0 -7px var(--jade); }
.search-box button {
  min-height: 52px; align-self: center; padding: 0 24px; display: flex; align-items: center; gap: 30px;
  border: 0; border-radius: var(--radius); color: var(--ink); background: var(--paper); cursor: pointer;
  transition: transform .18s ease, background .18s ease;
}
.search-box button:hover { transform: translateY(-2px); background: white; }
.search-box button:disabled { cursor: wait; opacity: .55; transform: none; }
.search-box button b { color: var(--cinnabar); font-size: 20px; }

.quick-search { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; color: var(--muted); font-size: 12px; }
.quick-search button, .board-option {
  min-height: 44px; border: 1px solid var(--line); border-radius: 999px; color: var(--paper-deep); background: rgba(255,255,255,.025); cursor: pointer;
}
.quick-search button { padding: 0 17px; }
.quick-search button:hover { border-color: var(--jade); color: var(--jade-bright); }
.status-message { min-height: 26px; margin-top: 20px; color: var(--muted); font-size: 13px; }
.status-message.error { color: #f09c8e; }
.board-results { display: flex; flex-wrap: wrap; gap: 10px; max-width: 1080px; }
.board-option { padding: 9px 16px; text-align: left; }
.board-option:hover { border-color: var(--gold); color: var(--paper); transform: translateY(-1px); }
.board-option small { margin-left: 8px; color: var(--muted); }
.board-option i { display: inline-block; margin-left: 8px; color: var(--gold); font-style: normal; font-size: 11px; }

.workspace { display: grid; grid-template-columns: minmax(280px, .72fr) minmax(0, 2fr); gap: 24px; padding-bottom: 70px; animation: reveal .5s ease both; }
.chain-panel, .stock-panel { border: 1px solid var(--line); background: rgba(19,26,22,.84); box-shadow: var(--shadow); backdrop-filter: blur(16px); }
.chain-panel { padding: 30px 25px; align-self: start; position: sticky; top: 20px; }
.chain-panel h2, .stock-panel h2 { margin: 10px 0 24px; font: 600 30px/1.2 "Songti SC", serif; }
.chain-layers { counter-reset: chain; }
.chain-layer { position: relative; padding: 0 0 24px 42px; counter-increment: chain; }
.chain-layer:not(:last-child)::before { content: ""; position: absolute; left: 14px; top: 26px; bottom: 2px; width: 1px; background: linear-gradient(var(--jade), transparent); }
.chain-layer::after { content: counter(chain, decimal-leading-zero); position: absolute; left: 0; top: 0; color: var(--jade); font: 11px/26px ui-monospace, monospace; }
.chain-layer h3 { margin: 0; font-size: 15px; }
.chain-layer p { margin: 5px 0 0; color: var(--muted); font-size: 12px; line-height: 1.55; }
.research-checklist { border-top: 1px solid var(--line); padding-top: 18px; }
.research-checklist summary { min-height: 44px; cursor: pointer; color: var(--gold); font-size: 13px; }
.research-checklist ul { margin: 10px 0; padding-left: 19px; color: var(--muted); font-size: 12px; }

.stock-panel { min-width: 0; padding: 30px; }
.panel-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; }
.source-time { color: var(--muted); font: 11px/1.5 ui-monospace, monospace; text-align: right; }
.summary-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 18px; }
.metric { padding: 16px; border: 1px solid var(--line); background: rgba(255,255,255,.02); }
.metric span { display: block; color: var(--muted); font-size: 11px; }
.metric strong { display: block; margin-top: 5px; color: var(--paper); font: 25px/1.2 "Songti SC", serif; }
.metric strong.positive { color: #f08d79; }
.metric strong.negative { color: var(--jade-bright); }
.ranking-note { margin: 10px 0 14px; padding: 9px 12px; border-left: 2px solid var(--gold); color: var(--muted); background: rgba(216,180,93,.05); font-size: 11px; }
.ranking-note span { color: var(--gold); margin-right: 10px; }

.stock-list { display: grid; gap: 8px; }
.stock-card {
  min-width: 0; display: grid; grid-template-columns: 40px minmax(145px, 1.35fr) 76px 90px 90px minmax(120px, 1fr) auto;
  align-items: center; gap: 12px; padding: 15px 13px; border: 1px solid transparent; border-bottom-color: var(--line); background: rgba(255,255,255,.012);
  transition: border-color .18s ease, background .18s ease;
}
.stock-card:hover { border-color: rgba(143,184,158,.3); background: rgba(143,184,158,.045); }
.stock-rank { color: #4f5b53; font: 12px ui-monospace, monospace; }
.stock-name strong { display: block; font-size: 15px; }
.stock-name small, .stock-cell small { color: var(--muted); font-size: 10px; }
.score-badge { width: 56px; height: 56px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; font: 700 17px ui-monospace, monospace; }
.score-badge.high { color: var(--gold); border-color: rgba(216,180,93,.55); }
.score-badge.medium { color: var(--jade-bright); }
.score-badge.low { color: var(--muted); }
.stock-cell { font: 13px/1.3 ui-monospace, monospace; }
.stock-cell b { display: block; font-weight: 500; }
.positive { color: #ef7c68; }
.negative { color: #88c5a2; }
.score-reason { color: var(--muted); font-size: 11px; line-height: 1.45; }
.stock-actions { display: flex; gap: 7px; }
.stock-actions a { min-height: 44px; min-width: 44px; display: grid; place-items: center; border: 1px solid var(--line); color: var(--paper-deep); text-decoration: none; font-size: 11px; }
.stock-actions a:hover { border-color: var(--jade); color: var(--jade-bright); }
.empty-state { padding: 48px 20px; border: 1px dashed var(--line); color: var(--muted); text-align: center; }

footer { width: min(1440px, calc(100% - 48px)); margin: 0 auto; padding: 28px 0 42px; display: grid; grid-template-columns: 110px 1fr; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
footer strong { color: var(--paper-deep); letter-spacing: .18em; }
footer p { margin: 0; max-width: 820px; }

@keyframes reveal { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

@media (max-width: 1020px) {
  .workspace { grid-template-columns: 1fr; }
  .chain-panel { position: static; }
  .stock-card { grid-template-columns: 36px 1.3fr 70px 86px 1fr auto; }
  .stock-card .market-cap-cell { display: none; }
}

@media (max-width: 760px) {
  .site-header, main, footer { width: min(100% - 28px, 680px); }
  .site-header { min-height: 72px; }
  .system-status { font-size: 0; }
  .system-status::after { content: "规则版"; font-size: 10px; }
  .hero { padding: 58px 0 52px; }
  .hero::after { font-size: 220px; top: 100px; right: -20px; }
  .hero h1 { font-size: clamp(48px, 17vw, 72px); }
  .hero-copy { font-size: 14px; }
  .search-box { grid-template-columns: 1fr; border: 0; gap: 10px; }
  .search-box input { min-height: 58px; padding: 0 14px; border: 1px solid var(--line); font-size: 18px; }
  .search-box button { min-height: 52px; justify-content: space-between; }
  .quick-search { gap: 6px; }
  .quick-search span { width: 100%; }
  .quick-search button { min-height: 44px; }
  .workspace { gap: 12px; }
  .chain-panel, .stock-panel { padding: 22px 16px; }
  .panel-heading { display: block; }
  .source-time { text-align: left; margin: -15px 0 18px; }
  .summary-cards { grid-template-columns: 1fr 1fr; }
  .metric:last-child { grid-column: 1 / -1; }
  .stock-card { grid-template-columns: 36px 1fr 58px; gap: 9px; padding: 15px 8px; border: 1px solid var(--line); }
  .stock-card .stock-cell, .stock-card .score-reason { grid-column: 2 / -1; }
  .stock-card .market-cap-cell { display: block; }
  .stock-actions { grid-column: 2 / -1; }
  .stock-actions a { flex: 1; min-height: 44px; }
  .score-badge { width: 52px; height: 52px; }
  footer { grid-template-columns: 1fr; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}