/* 詩境 · 高考古诗词鉴赏 AI 考点雷达 — 与 flx / gwyw / gksw / yyjc 同系前端 */
:root {
  --paper: #f4f0e7;
  --paper-2: #efe9dc;
  --ink: #2a2533;
  --ink-soft: #5b5468;
  --ink-faint: #8b8398;
  --rose: #d6859f;
  --teal: #5fa9a3;
  --gold: #d9a957;
  --lavender: #9384c0;
  --sky: #7c9cc8;
  --cinnabar: #c0533f;
  --line: rgba(42, 37, 51, 0.12);
  --line-strong: rgba(42, 37, 51, 0.22);
  --card: rgba(255, 253, 248, 0.66);
  --card-solid: #fdfbf6;
  --shadow: 0 10px 40px -18px rgba(42, 37, 51, 0.45);
  --serif: "Noto Serif SC", Georgia, "Songti SC", serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --sans: -apple-system, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --r: 16px;
  --grad: linear-gradient(120deg, var(--rose), var(--lavender) 40%, var(--teal) 78%, var(--gold));
}

* { box-sizing: border-box; min-width: 0; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--sans); color: var(--ink); background: var(--paper); line-height: 1.75; -webkit-font-smoothing: antialiased; overflow-x: hidden; }

.light-field { position: fixed; inset: 0; z-index: -1; overflow: hidden; background: radial-gradient(120% 90% at 50% -10%, #fbf7ef, var(--paper) 55%, var(--paper-2)); }
.blob { position: absolute; border-radius: 50%; filter: blur(60px); opacity: 0.5; mix-blend-mode: multiply; animation: drift 26s ease-in-out infinite; }
.b1 { width: 46vw; height: 46vw; left: -8vw; top: -6vw; background: var(--rose); }
.b2 { width: 40vw; height: 40vw; right: -6vw; top: 4vw; background: var(--teal); animation-delay: -6s; }
.b3 { width: 34vw; height: 34vw; left: 18vw; bottom: -10vw; background: var(--gold); animation-delay: -12s; }
.b4 { width: 30vw; height: 30vw; right: 10vw; bottom: -6vw; background: var(--lavender); animation-delay: -3s; }
.b5 { width: 24vw; height: 24vw; left: 44vw; top: 28vw; background: var(--sky); opacity: 0.35; animation-delay: -16s; }
@keyframes drift { 0%,100% { transform: translate(0,0) scale(1); } 33% { transform: translate(4vw,3vh) scale(1.08); } 66% { transform: translate(-3vw,-2vh) scale(.95); } }
.grain { position: absolute; inset: -50%; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E"); opacity: .05; }
@media (prefers-reduced-motion: reduce) { .blob { animation: none; } }

.topbar { position: sticky; top: 0; z-index: 50; display: flex; align-items: center; gap: 18px; padding: 12px clamp(16px, 4vw, 48px); background: rgba(244,240,231,.78); backdrop-filter: blur(14px) saturate(1.2); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: var(--ink); margin-right: auto; }
.brand-mark { position: relative; width: 30px; height: 26px; display: inline-block; }
.brand-mark i { position: absolute; width: 17px; height: 17px; border-radius: 50%; mix-blend-mode: multiply; }
.brand-mark i:nth-child(1) { left: 0; top: 4px; background: var(--rose); }
.brand-mark i:nth-child(2) { left: 9px; top: 0; background: var(--teal); }
.brand-mark i:nth-child(3) { left: 6px; top: 9px; background: var(--gold); }
.brand-text { font-family: var(--serif); font-weight: 900; font-size: 19px; letter-spacing: .04em; }
.brand-text em { font-style: normal; font-weight: 400; font-size: 12px; color: var(--ink-faint); font-family: var(--mono); margin-left: 6px; letter-spacing: 0; }
.topnav { display: flex; gap: 6px; }
.topnav a { font-size: 14.5px; color: var(--ink-soft); text-decoration: none; padding: 7px 14px; border-radius: 10px; transition: .18s; font-weight: 500; }
.topnav a:hover { color: var(--ink); background: rgba(255,255,255,.55); }
.topnav a.active { color: #fff; background: var(--ink); }
.navtoggle { display: none; background: none; border: 1px solid var(--line-strong); border-radius: 10px; font-size: 20px; width: 40px; height: 38px; cursor: pointer; color: var(--ink); }

main { max-width: 1080px; margin: 0 auto; padding: clamp(24px, 4vw, 52px) clamp(16px, 4vw, 40px) 80px; }
.loading { text-align: center; color: var(--ink-faint); padding: 100px 0; font-family: var(--mono); }
.section-eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--teal); margin-bottom: 8px; }
.section-eyebrow::before { content: "// "; opacity: .6; }
h1,h2,h3 { font-family: var(--serif); line-height: 1.3; letter-spacing: .01em; }

.card { background: var(--card); backdrop-filter: blur(10px); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--shadow); }
.pad { padding: clamp(18px, 3vw, 30px); }
.grid { display: grid; gap: 16px; }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 860px) { .cols-3,.cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .cols-2,.cols-3,.cols-4 { grid-template-columns: 1fr; } }

.tag { display: inline-block; font-family: var(--mono); font-size: 11.5px; padding: 2px 9px; border-radius: 20px; background: rgba(255,255,255,.6); border: 1px solid var(--line); color: var(--ink-soft); }
.tag.teal { color: #2f6f6a; border-color: rgba(95,169,163,.5); background: rgba(95,169,163,.12); }
.tag.rose { color: #9c4663; border-color: rgba(200,95,115,.5); background: rgba(200,95,115,.13); }
.tag.gold { color: #8a6311; border-color: rgba(217,169,87,.5); background: rgba(217,169,87,.16); }
.tag.lav { color: #5a4e86; border-color: rgba(147,132,192,.5); background: rgba(147,132,192,.14); }
.btn { font-family: var(--sans); font-size: 14.5px; font-weight: 600; border-radius: 11px; padding: 11px 20px; cursor: pointer; transition: .18s; color: var(--ink); background: rgba(255,255,255,.7); border: 1px solid var(--line-strong); text-decoration: none; display: inline-flex; align-items: center; justify-content: center; }
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn:disabled, .btn:disabled:hover { opacity: .55; cursor: not-allowed; transform: none; box-shadow: none; }
.btn.primary { color: #fff; background: var(--ink); border-color: var(--ink); }
.btn.accent { color: #fff; background: linear-gradient(120deg, var(--rose), var(--lavender)); border: none; }
.btn.sm { padding: 7px 13px; font-size: 13px; }

.hero { text-align: center; padding: clamp(30px, 6vw, 70px) 0 28px; }
.hero h1 { font-size: clamp(34px, 7vw, 60px); font-weight: 900; margin: 0 0 12px; text-wrap: balance; word-break: keep-all; }
.hero h1 .glow { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: clamp(15px, 2.2vw, 19px); color: var(--ink-soft); max-width: 700px; margin: 0 auto 26px; }
.lead.small { max-width: 760px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.cta.left { justify-content: flex-start; margin-top: 10px; }
.statbar { display: flex; gap: clamp(14px, 4vw, 48px); justify-content: center; flex-wrap: wrap; margin: 38px 0 8px; }
.statbar .s { text-align: center; }
.statbar .n { font-family: var(--mono); font-weight: 700; font-size: clamp(26px, 5vw, 38px); color: var(--ink); display: block; }
.statbar .l { font-size: 12.5px; color: var(--ink-faint); letter-spacing: .04em; }

.paper-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.paper-head h1,.paper-head h2 { margin: 0; }
.dim { color: var(--ink-faint); }

.modcard { display: block; text-decoration: none; color: inherit; position: relative; overflow: hidden; transition: .2s; }
.modcard:hover { transform: translateY(-3px); }
.modcard .ic { font-family: var(--mono); font-size: 12px; color: var(--teal); }
.modcard h3 { margin: 8px 0 6px; font-size: 20px; }
.modcard p { margin: 0; color: var(--ink-soft); font-size: 14px; }
.modcard .arrow { position: absolute; right: 20px; bottom: 16px; font-size: 20px; color: var(--ink-faint); transition: .2s; }
.modcard:hover .arrow { color: var(--rose); transform: translateX(3px); }
.modcard .stripe { position: absolute; left: 0; top: 0; bottom: 0; width: 5px; background: var(--grad); }

.radar-home { display: grid; grid-template-columns: minmax(0,.9fr) minmax(420px,1.1fr); gap: clamp(18px,3vw,32px); align-items: center; margin-top: 16px; }
.radar-copy h2 { margin: 0 0 8px; font-size: clamp(24px,3.2vw,34px); }
.radar-copy p { margin: 0; color: var(--ink-soft); font-size: 15px; }
.radar-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.radar-cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.radar-panel { display: grid; grid-template-columns: minmax(210px,260px) 1fr; gap: 14px; align-items: center; }
.radar-plot { display: grid; place-items: center; }
.radar-svg { width: min(100%,250px); aspect-ratio: 1; overflow: visible; }
.radar-ring { fill: rgba(255,255,255,.28); stroke: rgba(42,37,51,.13); stroke-width: 1; }
.radar-ring.strong { stroke: rgba(42,37,51,.22); }
.radar-axis { stroke: rgba(42,37,51,.14); stroke-width: 1; }
.radar-area { fill: rgba(95,169,163,.22); stroke: none; }
.radar-line { fill: none; stroke: #c05b83; stroke-width: 2.2; stroke-linejoin: round; }
.radar-dot { fill: #c05b83; stroke: #fff; stroke-width: 1.4; }
.radar-label { font-family: var(--sans); font-size: 10.5px; fill: var(--ink-soft); text-anchor: middle; dominant-baseline: middle; }
.radar-count { font-family: var(--mono); font-size: 9.5px; fill: var(--teal); text-anchor: middle; dominant-baseline: middle; }
.radar-legend { display: flex; align-items: center; justify-content: center; gap: 7px; font-family: var(--mono); font-size: 11px; color: var(--ink-faint); margin-top: -4px; }
.radar-legend span { width: 24px; height: 8px; border-radius: 999px; background: var(--grad); display: inline-block; }
.radar-bars { display: grid; gap: 9px; }
.radar-row { display: grid; grid-template-columns: 52px 1fr 30px; gap: 8px; align-items: center; font-family: var(--mono); font-size: 12px; color: var(--ink-soft); }
.radar-row i { height: 8px; background: rgba(42,37,51,.1); border-radius: 8px; overflow: hidden; }
.radar-row b { display: block; height: 100%; background: var(--grad); border-radius: inherit; }
.radar-row em { font-style: normal; text-align: right; color: var(--teal); }

.mindmap { margin-top: 16px; overflow: hidden; }
.mindmap-head { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px; align-items: start; }
.mindmap-head h2 { margin: 0 0 8px; font-size: clamp(24px, 3.2vw, 34px); }
.mindmap-head p { margin: 0; max-width: 720px; color: var(--ink-soft); font-size: 15px; }
.mindmap-tags { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; max-width: 280px; }
.mindmap-board { position: relative; min-height: 520px; margin-top: 18px; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background:
  radial-gradient(circle at 50% 50%, rgba(255,255,255,.9), rgba(255,255,255,.42) 35%, transparent 58%),
  linear-gradient(135deg, rgba(214,133,159,.12), rgba(95,169,163,.11) 45%, rgba(217,169,87,.12)); }
.mindmap-board::before { content: ""; position: absolute; inset: 0; background-image:
  linear-gradient(rgba(42,37,51,.06) 1px, transparent 1px),
  linear-gradient(90deg, rgba(42,37,51,.06) 1px, transparent 1px); background-size: 38px 38px; mask-image: radial-gradient(circle at 50% 50%, black, transparent 75%); opacity: .55; }
.mindmap-lines { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.mind-link { fill: none; stroke: rgba(95,169,163,.62); stroke-width: 2.3; stroke-linecap: round; stroke-dasharray: 7 8; }
.mind-node { position: absolute; z-index: 2; left: var(--x); top: var(--y); width: min(236px, 28%); min-height: 122px; transform: translate(-50%, -50%); padding: 13px 15px; border: 1px solid rgba(42,37,51,.14); border-radius: 12px; background: rgba(255,253,248,.86); box-shadow: 0 12px 32px -22px rgba(42,37,51,.48); backdrop-filter: blur(9px); }
.mind-node.center { left: 50%; top: 50%; width: 224px; min-height: 128px; background: rgba(42,37,51,.92); color: #fff; border-color: rgba(255,255,255,.32); text-align: center; }
.mind-key { display: inline-flex; align-items: center; height: 22px; padding: 0 8px; border-radius: 999px; font-family: var(--mono); font-size: 11px; color: var(--teal); background: rgba(95,169,163,.12); border: 1px solid rgba(95,169,163,.24); }
.mind-node.center .mind-key { color: #fff; background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.28); }
.mind-node h3 { margin: 7px 0 5px; font-size: 16px; }
.mind-node p { margin: 0; color: var(--ink-soft); font-size: 12.8px; line-height: 1.58; }
.mind-node.center p { color: rgba(255,255,255,.78); }
.mind-node em { display: inline-block; margin-top: 8px; font-family: var(--mono); font-size: 11px; font-style: normal; color: #9c4663; }
.mind-node.center em { color: rgba(255,255,255,.74); }
.mindmap-flow { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.mindmap-flow span { flex: 1 1 150px; min-height: 44px; display: flex; align-items: center; gap: 9px; padding: 9px 11px; border: 1px solid var(--line); border-radius: 10px; background: rgba(255,255,255,.55); color: var(--ink-soft); font-size: 13px; }
.mindmap-flow b { font-family: var(--mono); font-size: 11px; color: var(--teal); }

.guide-layout { display: grid; grid-template-columns: 200px 1fr; gap: 28px; align-items: start; }
.guide-toc { position: sticky; top: 70px; }
.guide-toc a { display: block; padding: 5px 10px; font-size: 13.5px; color: var(--ink-soft); text-decoration: none; border-left: 2px solid transparent; border-radius: 0 6px 6px 0; }
.guide-toc a:hover { color: var(--ink); border-left-color: var(--rose); background: rgba(255,255,255,.5); }
.prose h1 { margin: 4px 0 12px; font-size: clamp(28px, 4vw, 42px); }
.prose h2 { font-size: 25px; margin: 6px 0 14px; }
.prose p { margin: 0 0 12px; }
.knowledge-stack { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 16px; }
.trap-item { border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; background: rgba(255,255,255,.5); }
.trap-item .tt { font-family: var(--serif); font-weight: 700; font-size: 16px; color: #9c4663; display: flex; justify-content: space-between; gap: 8px; }
.trap-item .radar { font-size: 13px; color: var(--ink-soft); margin-top: 6px; }
.trap-item .radar b { color: var(--teal); font-family: var(--mono); font-size: 11px; }
.step { display: flex; gap: 14px; align-items: flex-start; padding: 12px 0; border-bottom: 1px dashed var(--line); }
.step .num { font-family: var(--mono); font-weight: 700; color: #fff; background: var(--ink); min-width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; font-size: 13px; }
.lede { font-size: 14px; color: var(--ink-soft); border-left: 3px solid var(--gold); background: rgba(217,169,87,.06); border-radius: 0 8px 8px 0; padding: 12px 16px; }

.corpus-shell,.diagnose-layout { display: grid; grid-template-columns: 250px 1fr; gap: 18px; align-items: start; }
.diagnose-layout { grid-template-columns: 1fr 380px; }
.corpus-side { position: sticky; top: 70px; max-height: calc(100vh - 84px); overflow-y: auto; }
.year-list,.cat-list { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font-family: var(--mono); font-size: 13px; padding: 6px 11px; border-radius: 8px; border: 1px solid var(--line-strong); background: rgba(255,255,255,.6); cursor: pointer; color: var(--ink-soft); transition: .15s; }
.chip.active { background: var(--ink); color: #fff; border-color: var(--ink); }
mark { background: rgba(217,169,87,.2); padding: 0 2px; border-radius: 3px; }
.reveal { border-left: 3px solid var(--teal); background: rgba(95,169,163,.08); padding: 12px 15px; border-radius: 0 8px 8px 0; margin-top: 10px; font-size: 14.5px; }

/* —— 诗篇浏览（课本诗篇） —— */
.poem-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
@media (max-width: 720px) { .poem-grid { grid-template-columns: 1fr; } }
.poemcard { text-align: left; cursor: pointer; border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; background: rgba(255,255,255,.5); transition: .16s; display: flex; flex-direction: column; gap: 6px; }
.poemcard:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--line-strong); }
.poemcard .pt { font-family: var(--serif); font-weight: 700; font-size: 17px; color: var(--ink); }
.poemcard .pa { font-size: 13px; color: var(--ink-soft); }
.poemcard .pq { font-family: var(--mono); font-size: 11px; color: var(--teal); }
.poemcard .ptags { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 2px; }

/* —— 诗篇阅读器 —— */
.poem-reader { font-family: var(--serif); }
.poem-title { text-align: center; }
.poem-title h1 { margin: 0 0 4px; font-size: clamp(26px,4vw,38px); font-weight: 900; }
.poem-byline { text-align: center; color: var(--ink-soft); font-size: 15px; margin-bottom: 6px; }
.poem-tags { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.verse { font-family: var(--serif); font-size: clamp(17px,2.4vw,21px); line-height: 2.35; text-align: center; white-space: pre-wrap; color: var(--ink); padding: 8px 0 6px; letter-spacing: .03em; }
.verse.long { text-align: left; font-size: clamp(16px,2.2vw,19px); line-height: 2.1; max-width: 40em; margin: 0 auto; }
.appreciation { font-size: 14.5px; color: var(--ink-soft); border-left: 3px solid var(--lavender); background: rgba(147,132,192,.07); border-radius: 0 8px 8px 0; padding: 12px 16px; margin: 14px 0; }
.poem-source { text-align: center; font-size: 12px; color: var(--ink-faint); font-family: var(--mono); margin-top: 4px; }
details.annobox,details.tipbox { border: 1px solid var(--line); border-radius: 10px; margin-top: 14px; background: rgba(255,255,255,.5); overflow: hidden; }
details.annobox summary,details.tipbox summary { cursor: pointer; padding: 11px 15px; font-family: var(--serif); font-weight: 700; list-style: none; }
details summary::-webkit-details-marker { display: none; }
details.annobox summary::before,details.tipbox summary::before { content: "▸ "; color: var(--rose); }
details[open].annobox summary::before,details[open].tipbox summary::before { content: "▾ "; }
.annolist { padding: 4px 16px 16px; columns: 2; column-gap: 26px; font-size: 13.5px; color: var(--ink-soft); }
@media (max-width: 640px) { .annolist { columns: 1; } }
.annolist li { break-inside: avoid; margin-bottom: 6px; line-height: 1.7; }
.tipbox .body { padding: 4px 16px 16px; color: var(--ink-soft); font-size: 14px; line-height: 1.85; }

/* —— 题组 —— */
.question-bank { display: grid; gap: 12px; margin-top: 18px; }
.q-card { border-top: 1px solid var(--line); padding: 16px 0 6px; }
.q-card.selected { border: 0; padding: 0; }
.qhead { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.qno { font-family: var(--mono); font-weight: 700; color: var(--rose); }
.stem { font-weight: 600; font-size: 15.5px; margin: 8px 0 10px; font-family: var(--serif); }
.opts { display: grid; gap: 7px; margin: 6px 0 10px; }
.opt { border: 1px solid var(--line-strong); border-radius: 9px; padding: 9px 13px; font-size: 14.5px; cursor: pointer; background: rgba(255,255,255,.55); transition: .14s; display: flex; gap: 8px; }
.opt:hover { border-color: var(--lavender); background: rgba(147,132,192,.08); }
.opt.picked { border-color: var(--lavender); background: rgba(147,132,192,.16); }
.opt.correct { border-color: var(--teal); background: rgba(95,169,163,.16); }
.opt.wrong { border-color: var(--rose); background: rgba(214,133,159,.16); }
.opt .ok { margin-left: auto; font-weight: 700; }
.q-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-start; }
.q-actions details { flex: 1 1 260px; font-size: 14px; color: var(--ink-soft); }
.q-actions summary { cursor: pointer; color: var(--teal); font-family: var(--mono); }
textarea.answer { width: 100%; min-height: 110px; border: 1px solid var(--line-strong); border-radius: 8px; padding: 12px 14px; font-family: var(--sans); font-size: 15px; line-height: 1.7; resize: vertical; background: rgba(255,255,255,.7); color: var(--ink); }
textarea.answer:focus,input:focus { outline: 2px solid var(--lavender); border-color: transparent; }
.ai-workbench { position: sticky; top: 70px; }
.tmpl { border-radius: 8px; border: 1px solid var(--line); overflow: hidden; margin-top: 12px; }
.tmpl summary { cursor: pointer; padding: 11px 14px; font-family: var(--serif); font-weight: 700; background: rgba(255,255,255,.55); list-style: none; }
.tmpl summary::-webkit-details-marker { display: none; }
.tmpl summary::before { content: "▸ "; color: var(--rose); }
.tmpl[open] summary::before { content: "▾ "; }
.tmpl .body { padding: 4px 14px 14px; color: var(--ink-soft); font-size: 14px; line-height: 1.8; }
.grade-box { border-radius: 8px; border: 1px solid var(--line); padding: 14px 16px; margin-top: 10px; background: rgba(255,255,255,.55); }
.grade-box.error { color: #9c4663; }
.grade-box .sc { font-family: var(--mono); font-weight: 700; font-size: 17px; }
.grade-box .row { margin: 6px 0; font-size: 14px; line-height: 1.7; }
.pts { list-style: none; padding: 0; margin: 4px 0; }
.pts li { font-size: 13.5px; padding: 2px 0 2px 18px; position: relative; line-height: 1.7; }
.pts li::before { position: absolute; left: 0; }
.pts.win li::before { content: "✓"; color: var(--teal); }
.pts.lose li::before { content: "✗"; color: var(--rose); }
.chat { margin-top: 12px; border-top: 1px dashed var(--line); padding-top: 12px; }
.chat-log { display: flex; flex-direction: column; gap: 9px; margin-bottom: 10px; max-height: 320px; overflow-y: auto; }
.msg { max-width: 88%; padding: 9px 13px; border-radius: 8px; font-size: 14px; line-height: 1.7; white-space: pre-wrap; }
.msg.user { align-self: flex-end; background: var(--ink); color: #fff; }
.msg.ai { align-self: flex-start; background: rgba(255,255,255,.75); border: 1px solid var(--line); }
.chat-input { display: flex; gap: 8px; }
.chat-input input { flex: 1; border: 1px solid var(--line-strong); border-radius: 8px; padding: 10px 13px; font-size: 14px; background: rgba(255,255,255,.7); color: var(--ink); }

.matrix-head { text-align: center; margin-bottom: 16px; }
.matrix { display: grid; gap: 10px; }
.matrix-row { display: grid; grid-template-columns: minmax(210px,.72fr) 1fr 1fr; gap: 16px; }
.matrix-row h3,.ability-card h3,.verify-card h3 { margin: 8px 0 6px; }
.matrix-row p,.ability-card p,.verify-card p { margin: 0; color: var(--ink-soft); font-size: 14px; }
.matrix-row b { display: block; font-family: var(--mono); font-size: 12px; margin-bottom: 5px; }
.empty { text-align: center; color: var(--ink-faint); padding: 40px 0; }
.spin { display: inline-block; width: 14px; height: 14px; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: sp .7s linear infinite; vertical-align: -2px; }
.spin.dark { border-color: var(--line-strong); border-top-color: var(--ink); }
@keyframes sp { to { transform: rotate(360deg); } }
.sitefoot { text-align: center; padding: 30px 20px 40px; color: var(--ink-faint); font-size: 12.5px; display: flex; flex-direction: column; gap: 5px; border-top: 1px solid var(--line); }
.sitefoot .mono { font-family: var(--mono); }

@media (max-width: 960px) {
  .corpus-shell,.diagnose-layout { grid-template-columns: 1fr; }
  .corpus-side,.ai-workbench { position: static; max-height: none; }
  .knowledge-stack { grid-template-columns: 1fr; }
  .matrix-row { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .topnav { display: none; position: absolute; top: 60px; right: 12px; flex-direction: column; background: var(--card-solid); padding: 8px; border-radius: 8px; box-shadow: var(--shadow); border: 1px solid var(--line); }
  .topnav.open { display: flex; }
  .navtoggle { display: block; }
  .guide-toc { display: none; }
  .guide-layout { grid-template-columns: 1fr; }
  .radar-home,.radar-panel { grid-template-columns: 1fr; }
  .radar-home { margin-top: 12px; }
  .mindmap-head { grid-template-columns: 1fr; }
  .mindmap-tags { justify-content: flex-start; max-width: none; }
  .mindmap-board { min-height: 0; display: grid; gap: 10px; padding: 12px; }
  .mindmap-lines,.mindmap-board::before { display: none; }
  .mind-node,.mind-node.center { position: relative; left: auto; top: auto; transform: none; width: auto; min-height: 0; text-align: left; }
  .mind-node.center { order: -1; }
}
@media (max-width: 520px) {
  main { padding-inline: 12px; }
  .brand-text em { display: none; }
  .statbar { gap: 12px 22px; }
}