/* ============================================================
   TMS 题库站点 · 响应式样式（浅色主题）
   ============================================================ */
:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --border: #e5e7eb;
  --border-strong: #d5d9e3;
  --ink: #1f2937;
  --ink-2: #475569;
  --muted: #8792a6;
  --primary: #4f46e5;
  --primary-soft: #eef2ff;
  --primary-line: #c7d2fe;
  --red: #dc2626;
  --red-soft: #fee2e2;
  --green: #059669;
  --green-soft: #d1fae5;
  --amber: #b45309;
  --amber-soft: #fef3c7;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 6px 20px rgba(16, 24, 40, .05);
  --mono: Consolas, "JetBrains Mono", "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  font-size: 14px;
  line-height: 1.7;
}
a { color: var(--primary); }
button { font: inherit; cursor: pointer; }
.hidden { display: none !important; }

/* ---------------- Header ---------------- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  height: 62px; display: flex; align-items: center; gap: 16px;
  padding: 0 20px; background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 9px; display: grid; place-items: center;
  background: var(--primary); color: #fff; font-weight: 700; font-size: 15px; letter-spacing: -1px;
}
.brand-text { font-size: 16px; font-weight: 700; letter-spacing: .2px; white-space: nowrap; }
.brand-sub { color: var(--muted); font-size: 11px; font-weight: 400; margin-left: 6px; }
.search-wrap { flex: 1 1 auto; max-width: 520px; position: relative; }
.search-wrap input {
  width: 100%; height: 38px; padding: 0 14px 0 36px; border-radius: 10px;
  border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--ink);
  outline: none; transition: .18s;
}
.search-wrap input:focus { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px var(--primary-soft); }
.search-icon { position: absolute; left: 12px; top: 9px; color: var(--muted); font-size: 15px; }
.top-actions { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.icon-btn {
  height: 36px; padding: 0 12px; border-radius: 9px; border: 1px solid var(--border-strong);
  background: #fff; color: var(--ink-2); font-size: 13px; white-space: nowrap;
}
.icon-btn:hover { border-color: var(--primary); color: var(--primary); }
#btn-filter { display: none; }

/* ---------------- Layout ---------------- */
.layout { display: flex; align-items: flex-start; gap: 22px; max-width: 1600px; margin: 0 auto; padding: 22px 20px 60px; }
.sidebar {
  flex: 0 0 264px; width: 264px; position: sticky; top: 84px;
  max-height: calc(100vh - 104px); overflow-y: auto;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 6px 14px 16px;
  scrollbar-width: thin;
}
.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-thumb { background: #dfe3ec; border-radius: 4px; }
.main { flex: 1 1 auto; min-width: 0; }

.f-group { padding: 14px 0 12px; border-bottom: 1px dashed var(--border); }
.f-group:last-child { border-bottom: none; }
.f-group h3 { margin: 0 0 10px; font-size: 12px; font-weight: 700; color: var(--ink-2); letter-spacing: .6px; }
.f-subtitle { font-size: 11px; color: var(--muted); margin: 12px 0 6px; font-weight: 600; }
.f-row { display: flex; gap: 6px; }
.f-wrap { flex-wrap: wrap; }
.f-item {
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 9px;
  border: 1px solid var(--border); border-radius: 8px; background: var(--surface-2);
  color: var(--ink-2); font-size: 12px; line-height: 1.4; text-align: left;
}
.f-item:hover { border-color: var(--primary-line); color: var(--primary); }
.f-item.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.f-item.active .f-count { color: rgba(255, 255, 255, .85); }
.f-item.is-empty { opacity: .5; }
.f-item.is-pinned { border-color: var(--primary-line); background: var(--primary-soft); }
.f-count { font-size: 10px; color: var(--muted); font-variant-numeric: tabular-nums; }
.seg { flex: 1; padding: 6px 8px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface-2); color: var(--ink-2); font-size: 12px; }
.seg.active { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); font-weight: 600; }
.f-note { margin: 8px 0 0; font-size: 11px; color: var(--muted); line-height: 1.5; }

/* ---------------- Stat bar ---------------- */
.statbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 12px 16px; margin-bottom: 16px; box-shadow: var(--shadow); font-size: 13px;
}
.statbar b { color: var(--primary); font-variant-numeric: tabular-nums; font-size: 15px; }
.statbar .stat-tip { color: var(--muted); font-size: 12px; margin-left: auto; }

/* ---------------- Question cards ---------------- */
.q-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(370px, 1fr)); gap: 14px; }
.q-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px 12px; box-shadow: var(--shadow); cursor: pointer; outline: none;
  transition: transform .16s, border-color .16s, box-shadow .16s;
}
.q-card:hover, .q-card:focus-visible { transform: translateY(-2px); border-color: var(--primary-line); box-shadow: 0 8px 24px rgba(79, 70, 229, .10); }
.q-card-top { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.q-id { font-family: var(--mono); font-size: 12px; color: var(--primary); font-weight: 600; }
.q-format, .q-badge { font-size: 10px; color: var(--muted); border: 1px solid var(--border); border-radius: 5px; padding: 1px 5px; text-transform: uppercase; }
.q-badge { color: var(--amber); border-color: #fde68a; background: #fffbeb; }
.q-title { margin: 0 0 10px; font-size: 16px; font-weight: 650; line-height: 1.45; }
.q-chips { display: flex; flex-wrap: wrap; gap: 5px; min-height: 24px; }
.chip { display: inline-block; padding: 2px 8px; border-radius: 6px; font-size: 11px; line-height: 1.6; white-space: nowrap; }
.chip-tms { background: #e0f2fe; color: #075985; border: 1px solid #bae6fd; }
.chip-auto { background: var(--primary-soft); color: #4338ca; border: 1px solid var(--primary-line); }
.chip-model { background: #f3e8ff; color: #7e22ce; border: 1px solid #e9d5ff; }
.chip-warn { background: var(--amber-soft); color: var(--amber); border: 1px solid #fde68a; }
.chip-stage { background: var(--green-soft); color: #047857; border: 1px solid #a7f3d0; }
.chip-outline { background: #fff; color: var(--muted); border: 1px dashed var(--border-strong); }
.chip-primary { background: var(--primary); color: #fff; }
.chip-soft { background: var(--primary-soft); color: #4338ca; border: 1px solid var(--primary-line); }
.q-foot { display: flex; flex-wrap: wrap; gap: 4px 14px; margin-top: 11px; padding-top: 10px; border-top: 1px dashed var(--border); font-size: 11px; color: var(--muted); }
.q-go { margin-left: auto; color: var(--primary); font-weight: 600; }
.empty { padding: 48px 20px; text-align: center; color: var(--muted); background: #fff; border: 1px dashed var(--border-strong); border-radius: var(--radius); }
.load-more-wrap { text-align: center; margin: 22px 0 0; }

/* ---------------- Buttons ---------------- */
.btn-primary, .btn-ghost, .btn-mini, #load-more {
  border-radius: 8px; padding: 8px 16px; font-size: 13px; transition: .16s;
}
.btn-primary { background: var(--primary); color: #fff; border: 1px solid var(--primary); font-weight: 600; }
.btn-primary:hover { background: #4338ca; }
.btn-ghost { background: #fff; color: var(--ink-2); border: 1px solid var(--border-strong); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-mini { padding: 4px 10px; font-size: 11px; background: #fff; color: var(--ink-2); border: 1px solid var(--border-strong); }
.btn-mini:hover { border-color: var(--primary); color: var(--primary); }
#load-more { display: inline-flex; background: #fff; border: 1px solid var(--border-strong); color: var(--ink-2); }

/* ---------------- Detail ---------------- */
.detail { max-width: 980px; margin: 0 auto; }
.btn-back { background: none; border: none; color: var(--primary); padding: 0; font-size: 13px; margin-bottom: 14px; }
.d-head { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 22px; box-shadow: var(--shadow); margin-bottom: 16px; }
.d-idline { font-family: var(--mono); font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
.d-h1 { margin: 6px 0 16px; font-size: 26px; line-height: 1.35; }
.d-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 10px; }
.d-tags-label { flex: 0 0 100%; font-size: 11px; color: var(--muted); font-weight: 600; letter-spacing: .3px; }
.d-section { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 22px 20px; box-shadow: var(--shadow); margin-bottom: 14px; }
.d-title { margin: 0 0 14px; font-size: 15px; font-weight: 700; display: flex; align-items: center; gap: 9px; }
.sec-no { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 7px; background: var(--primary-soft); color: var(--primary); font-size: 11px; font-family: var(--mono); }
.d-body { font-size: 14px; }
.prose .p-line { margin: 0 0 12px; line-height: 1.9; }
.prose h1, .prose h2, .prose h3, .prose h4 { margin: 16px 0 8px; font-size: 15px; }
.prose strong { color: var(--ink); }
.prose code, .inline-code { font-family: var(--mono); background: var(--surface-2); border: 1px solid var(--border); border-radius: 4px; padding: 1px 4px; font-size: 12px; }
.prose .code-block { background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 12px; overflow-x: auto; font-family: var(--mono); font-size: 12px; line-height: 1.7; }
.prose .md-img { max-width: 100%; border-radius: 8px; border: 1px solid var(--border); margin: 6px 0; }
.math { font-family: "Cambria Math", Georgia, serif; font-style: italic; background: #f5f3ff; color: #5b21b6; padding: 0 3px; border-radius: 4px; overflow-wrap: anywhere; }
.math sup, .math sub { font-size: .72em; }
mark.kw { background: #fef08a; color: #92400e; padding: 0 3px; border-radius: 4px; font-weight: 600; }

/* 样例 */
.samples { display: grid; gap: 12px; }
.sample { border: 1px solid var(--border); border-radius: 9px; overflow: hidden; background: var(--surface-2); }
.sample-head { display: flex; align-items: center; justify-content: space-between; padding: 7px 12px; background: #fff; border-bottom: 1px solid var(--border); font-size: 12px; }
.sample-cols { display: grid; grid-template-columns: 1fr 1fr; }
.sample-col { padding: 10px 12px; min-width: 0; }
.sample-col + .sample-col { border-left: 1px solid var(--border); }
.sample-label { display: block; font-size: 10px; color: var(--muted); letter-spacing: .6px; margin-bottom: 5px; }
.sample-col pre { margin: 0; font-family: var(--mono); font-size: 12px; line-height: 1.65; white-space: pre-wrap; word-break: break-all; color: var(--ink); }

/* 图片资源 */
.img-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.img-item { border: 1px solid var(--border); border-radius: 9px; padding: 8px; background: var(--surface-2); }
.img-item img { width: 100%; max-height: 150px; object-fit: contain; border-radius: 5px; background: #fff; }
.img-url { display: block; margin-top: 6px; font-size: 10px; color: var(--muted); word-break: break-all; line-height: 1.4; }

/* 分析 */
.d-analysis { border-left: 3px solid var(--primary); }
.analysis-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.analysis-block { margin-top: 20px; }
.analysis-block h4 { margin: 0 0 10px; font-size: 14px; display: flex; align-items: center; gap: 8px; }
.reasoning { margin: 0; padding: 12px 14px; background: var(--primary-soft); border-radius: 9px; line-height: 1.9; }
.kw-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 8px; }
.kw-item { display: flex; gap: 9px; align-items: flex-start; padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px; font-size: 12px; line-height: 1.6; }
.kw-item span { color: var(--ink-2); }
.clue-list { margin: 0; padding-left: 20px; }
.clue-list li { margin-bottom: 7px; line-height: 1.8; color: var(--ink-2); }
.step-list { display: grid; gap: 8px; }
.step { display: flex; gap: 12px; padding: 11px 13px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface-2); }
.step-idx { flex: 0 0 24px; height: 24px; border-radius: 50%; background: var(--primary); color: #fff; display: grid; place-items: center; font-size: 11px; font-weight: 700; }
.step-body strong { font-size: 13px; }
.step-body p { margin: 3px 0 0; font-size: 12px; color: var(--ink-2); line-height: 1.7; }
.walk-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 12px; }
.demo-figure { margin: 0; border: 1px solid var(--border); border-radius: 9px; background: #fff; overflow: hidden; }
.demo-figure svg { width: 100%; height: auto; display: block; }
.demo-figure figcaption { padding: 7px 11px; font-size: 11px; color: var(--ink-2); border-top: 1px solid var(--border); background: var(--surface-2); }
.pending-box { text-align: center; padding: 28px 20px; border: 1px dashed var(--border-strong); border-radius: 10px; background: var(--surface-2); }
.pending-box.compact { padding: 18px; }
.pending-icon { font-size: 24px; color: var(--primary); }
.pending-box h4 { margin: 6px 0; font-size: 14px; }
.pending-box p { margin: 0 auto 14px; max-width: 620px; font-size: 12px; color: var(--muted); line-height: 1.8; }

/* 代码 */
.d-code-body { overflow: hidden; }
.code-wrap { border: 1px solid var(--border); border-radius: 9px; overflow: hidden; background: var(--surface-2); }
.code-bar { display: flex; align-items: center; justify-content: space-between; padding: 6px 11px; background: #fff; border-bottom: 1px solid var(--border); }
.code-lang { font-size: 11px; color: var(--muted); font-family: var(--mono); }
.code-body { margin: 0; padding: 12px 0; overflow-x: auto; font-family: var(--mono); font-size: 12.5px; line-height: 1.75; }
.code-line { display: flex; min-width: max-content; }
.code-line:hover { background: #eef2ff; }
.ln { flex: 0 0 46px; text-align: right; padding-right: 14px; color: #aab2c0; user-select: none; border-right: 1px solid var(--border); margin-right: 14px; }
.lc { white-space: pre; padding-right: 16px; color: var(--ink); }
.tok-cm { color: #94a3b8; font-style: italic; }
.tok-str { color: #b91c1c; }
.tok-pre { color: #7e22ce; }
.tok-kw { color: #1d4ed8; font-weight: 600; }
.tok-type { color: #0f766e; }
.tok-lib { color: #a16207; }
.tok-num { color: #be185d; }

/* 运行器 */
.runner { margin-top: 14px; border: 1px solid var(--border); border-radius: 9px; padding: 13px; background: #fff; }
.runner-bar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.runner-status { font-size: 11px; color: var(--muted); }
.runner-label { display: block; font-size: 11px; color: var(--ink-2); margin-bottom: 5px; font-weight: 600; }
.runner textarea { width: 100%; resize: vertical; border: 1px solid var(--border-strong); border-radius: 7px; padding: 8px 10px; font-family: var(--mono); font-size: 12px; color: var(--ink); background: var(--surface-2); outline: none; }
.runner textarea:focus { border-color: var(--primary); background: #fff; }
.runner-actions { display: flex; gap: 8px; margin: 10px 0; flex-wrap: wrap; }
.runner-out { margin: 0; padding: 11px 12px; min-height: 62px; border-radius: 7px; background: var(--surface-2); border: 1px solid var(--border); font-family: var(--mono); font-size: 12px; white-space: pre-wrap; color: var(--ink-2); }

/* ---------------- 在线 CPP 编程面板（复用码小怪 Monaco + 编译服务） ---------------- */
#ide-mount { scroll-margin-top: 108px; }
.ide { scroll-margin-top: 108px; }
.ide { margin-top: 14px; border: 1px solid var(--border-strong); border-radius: 10px; background: #fff; overflow: hidden; max-width: 100%; }
.ide-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 13px; background: var(--surface-2); border-bottom: 1px solid var(--border); }
.ide-title { font-size: 13px; font-weight: 700; color: var(--ink); min-width: 0; }
.ide-title small { display: block; font-weight: 400; font-size: 11px; color: var(--muted); line-height: 1.5; }
.ide-auth { flex: 0 0 auto; font-size: 11px; padding: 3px 9px; border-radius: 999px; background: var(--amber-soft); color: var(--amber); border: 1px solid #fde68a; }
.ide-auth.on { background: var(--green-soft); color: var(--green); border-color: #a7f3d0; }
.ide-login-form { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; padding: 11px 13px; border-bottom: 1px solid var(--border); }
.ide-login-form input { height: 34px; padding: 0 10px; border: 1px solid var(--border-strong); border-radius: 7px; background: var(--surface-2); color: var(--ink); font-size: 12px; width: 150px; outline: none; min-width: 0; }
.ide-login-form input:focus { border-color: var(--primary); background: #fff; }
.ide-hint { font-size: 11px; color: var(--muted); flex: 1 1 100%; }
.ide-logged { display: flex; align-items: center; gap: 10px; padding: 9px 13px; border-bottom: 1px solid var(--border); font-size: 12px; color: var(--ink-2); }
.ide-editor-wrap { position: relative; border-bottom: 1px solid var(--border); max-width: 100%; }
.ide-editor { height: 320px; background: #fff; }
.ide-loading { display: flex; align-items: center; justify-content: center; height: 100%; color: var(--muted); font-size: 12px; }
.ide-fallback { display: block; width: 100%; height: 320px; border: 0; padding: 12px; font-family: var(--mono); font-size: 12px; line-height: 1.6; color: var(--ink); background: var(--surface-2); resize: vertical; outline: none; }
.ide-io { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 11px 13px; }
.ide-io-col { min-width: 0; }
.ide-io label { display: block; font-size: 11px; font-weight: 600; color: var(--ink-2); margin-bottom: 5px; }
.ide-io textarea { width: 100%; resize: vertical; border: 1px solid var(--border-strong); border-radius: 7px; padding: 7px 9px; font-family: var(--mono); font-size: 12px; color: var(--ink); background: var(--surface-2); outline: none; }
.ide-io textarea:focus { border-color: var(--primary); background: #fff; }
.ide-io textarea[readonly] { color: var(--muted); }
.ide-actions { display: flex; flex-wrap: wrap; gap: 8px; padding: 0 13px 11px; }
.ide-out { margin: 0 13px 13px; padding: 11px 12px; min-height: 66px; max-height: 320px; overflow: auto; border-radius: 7px; background: var(--surface-2); border: 1px solid var(--border); font-family: var(--mono); font-size: 12px; line-height: 1.6; white-space: pre-wrap; word-break: break-word; color: var(--ink-2); }
.ide-out.ok { background: var(--green-soft); border-color: #a7f3d0; color: #065f46; }
.ide-out.no { background: var(--red-soft); border-color: #fecaca; color: #991b1b; }
.chip-sub { display: inline-block; margin-left: 6px; padding-left: 6px; border-left: 1px solid currentColor; opacity: .7; font-style: normal; font-size: 10px; }
.chip-ok { background: var(--green-soft); color: var(--green); border: 1px solid #a7f3d0; }

/* ---------------- Modal / Toast / Mask ---------------- */
.mask { display: none; position: fixed; inset: 0; background: rgba(15, 23, 42, .38); z-index: 50; }
.mask.show { display: block; }
.modal { display: none; position: fixed; inset: 0; z-index: 60; place-items: center; padding: 16px; background: rgba(15, 23, 42, .38); }
.modal.show { display: grid; }
.modal-card { width: min(480px, 100%); max-height: 90vh; overflow-y: auto; background: #fff; border-radius: 14px; padding: 22px; box-shadow: 0 20px 60px rgba(0, 0, 0, .18); }
.modal-card h3 { margin: 0 0 6px; font-size: 17px; }
.modal-note { font-size: 12px; color: var(--muted); line-height: 1.7; margin: 8px 0 14px; }
.modal-card label { display: block; font-size: 12px; color: var(--ink-2); font-weight: 600; margin-bottom: 12px; }
.modal-card input, .modal-card select { display: block; width: 100%; margin-top: 5px; height: 36px; padding: 0 10px; border: 1px solid var(--border-strong); border-radius: 7px; background: var(--surface-2); color: var(--ink); outline: none; font-size: 13px; }
.modal-card input:focus, .modal-card select:focus { border-color: var(--primary); background: #fff; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
.toast { position: fixed; left: 50%; bottom: 30px; transform: translate(-50%, 20px); background: #1f2937; color: #fff; padding: 9px 18px; border-radius: 9px; font-size: 13px; opacity: 0; pointer-events: none; transition: .22s; z-index: 80; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------------- 全量加载 / 生成内容标记 ---------------- */
.btn-full { background: var(--primary); color: #fff; border-color: var(--primary); font-weight: 600; }
.btn-full:hover { background: #4338ca; color: #fff; }
.btn-full.is-done { background: #ecfdf5; color: #047857; border-color: #a7f3d0; }
.btn-full:disabled { cursor: default; opacity: 1; }
.full-bar { display: none; height: 4px; margin: 0 0 12px; background: var(--surface-2); border-radius: 99px; overflow: hidden; }
.full-bar.show { display: block; }
.full-bar-fill { height: 100%; width: 2%; border-radius: 99px; background: linear-gradient(90deg, var(--primary), #0ea5e9); transition: width .2s ease; }
.src-note { margin-bottom: 12px; padding: 9px 12px; border: 1px solid #fde68a; border-radius: 8px; background: #fffbeb; color: #92400e; font-size: 12.5px; line-height: 1.65; }
.walk-grid .demo-figure svg { background: #f8fafc; }

/* ---------------- Mobile ---------------- */
@media (max-width: 900px) {
  html, body { max-width: 100%; overflow-x: clip; }
  .topbar { height: auto; min-height: 56px; flex-wrap: wrap; padding: 9px 12px; gap: 9px; width: 100%; max-width: 100%; }
  .brand { min-width: 0; flex: 0 1 auto; }
  .brand-text { font-size: 14px; }
  .brand-sub { display: none; }
  #btn-filter { display: inline-block; }
  .search-wrap { order: 3; flex: 1 0 100%; max-width: none; }
  .search-wrap input { height: 36px; }
  .top-actions { gap: 6px; flex: 0 1 auto; min-width: 0; }
  .icon-btn { padding: 0 8px; height: 34px; font-size: 12px; }
  .btn-full { font-size: 11px; padding: 0 7px; flex: 0 0 auto; }
  #btn-settings .btn-text { display: none; }
  #btn-settings::before { content: '⚙'; font-size: 15px; }
  .d-head, .d-section, .statbar, .q-card, .detail { max-width: 100%; }
  .prose .p-line { overflow-wrap: anywhere; word-break: break-word; }
  .layout { padding: 14px 12px 50px; gap: 0; }
  .sidebar {
    position: fixed; top: 0; left: 0; bottom: 0; z-index: 55; width: 82vw; max-width: 320px;
    max-height: none; border-radius: 0; transform: translateX(-102%); transition: transform .22s ease;
    box-shadow: 8px 0 30px rgba(15, 23, 42, .14); padding-top: 12px;
  }
  .sidebar.open { transform: translateX(0); }
  .statbar { padding: 10px 12px; gap: 4px 12px; font-size: 12px; }
  .statbar .stat-tip { flex: 0 0 100%; margin-left: 0; }
  .q-grid { grid-template-columns: 1fr; gap: 11px; }
  .q-card { padding: 12px 13px 10px; }
  .q-title { font-size: 15px; }
  .d-head { padding: 16px; }
  .d-h1 { font-size: 21px; }
  .d-section { padding: 14px 15px 16px; }
  .sample-cols { grid-template-columns: 1fr; }
  .sample-col + .sample-col { border-left: none; border-top: 1px solid var(--border); }
  .kw-grid, .walk-grid { grid-template-columns: 1fr; }
  .code-body { font-size: 11.5px; }
  .ln { flex-basis: 36px; padding-right: 8px; margin-right: 9px; }
  .runner-actions .btn-primary, .runner-actions .btn-ghost { flex: 1 1 auto; }
  .ide { max-width: 100%; }
  .ide-head { flex-wrap: wrap; }
  .ide-editor, .ide-fallback { height: 240px; }
  .ide-io { grid-template-columns: 1fr; }
  .ide-login-form input { flex: 1 1 45%; width: auto; }
  .ide-actions .btn-primary, .ide-actions .btn-ghost { flex: 1 1 auto; }
  .ide-out { max-height: 240px; }
}
@media (max-width: 380px) {
  .brand-text { font-size: 13px; }
  .q-foot { gap: 3px 9px; }
  .q-go { flex: 0 0 100%; margin-left: 0; }
}

/* ============================================================
   2026-11-09：暖黄编辑器 / 代码高亮快捷提醒 / 真实标签核查
   ============================================================ */
:root {
  --warm-bg: #fff8e7;
  --warm-bg-2: #fff3d6;
  --warm-line: #e6cd8c;
  --warm-line-strong: #d9b25f;
  --warm-ink: #3f341f;
  --warm-muted: #8a7543;
}

/* --- 标签核查事实条 --- */
.tag-audit {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px;
  margin: 0 0 14px; padding: 10px 14px;
  border: 1px solid var(--warm-line); border-left: 4px solid var(--warm-line-strong);
  border-radius: 9px; background: var(--warm-bg);
  font-size: 12px; color: var(--warm-ink); line-height: 1.7;
}
.tag-audit strong { font-size: 12.5px; color: #8a5a12; }
.tag-audit b { color: #b45309; }
.tag-audit .audit-note { flex: 1 1 100%; font-size: 11px; color: var(--warm-muted); }

/* --- 筛选器：TMS 事实 vs 本地推断 --- */
.f-fact { margin-left: 6px; padding: 1px 6px; border-radius: 5px; font-size: 10px;
          font-weight: 600; color: #8a5a12; background: var(--warm-bg-2); border: 1px solid var(--warm-line); }
.f-item.is-real { border-color: #bbdfcd; }
.f-item.is-real .f-label::after { content: 'TMS'; margin-left: 5px; font-size: 9px;
          color: var(--green); border: 1px solid #a7f3d0; border-radius: 4px; padding: 0 3px; }
.f-item.is-inferred { border-style: dashed; }
.f-item.is-inferred .f-label::after { content: '推断'; margin-left: 5px; font-size: 9px;
          color: var(--muted); border: 1px dashed var(--border-strong); border-radius: 4px; padding: 0 3px; }
.f-more { margin-top: 8px; padding: 5px 10px; font-size: 11px; cursor: pointer;
          border: 1px solid var(--warm-line-strong); border-radius: 6px;
          background: var(--warm-bg); color: #8a5a12; }
.f-more:hover { background: var(--warm-bg-2); }

/* --- 代码高亮：暖黄底 + 分色 + 快捷提醒 --- */
.code-wrap { background: var(--warm-bg); border-color: var(--warm-line); }
.code-bar { background: var(--warm-bg-2); border-bottom-color: var(--warm-line); gap: 8px; flex-wrap: wrap; }
.code-body { background: var(--warm-bg); }
.code-line { min-width: max-content; }
.code-line:hover { background: #f9edc9; }
.ln { color: #b89a5c; border-right-color: var(--warm-line); }
.lc { color: var(--warm-ink); }
.tok-cm { color: #9a7b3f; }
.tok-str { color: #a5402c; }
.tok-pre { color: #7a3ea8; }
.tok-kw { color: #b45309; }
.tok-type { color: #1c6b63; }
.tok-lib { color: #8a5a12; }
.tok-num { color: #a33a68; }
.code-tip, .ide-shortcuts {
  padding: 7px 11px; font-size: 11px; line-height: 1.8; color: var(--warm-ink);
  background: var(--warm-bg); border-bottom: 1px solid var(--warm-line);
  display: flex; align-items: center; flex-wrap: wrap; gap: 4px 12px;
}
.code-tip { background: #fffbf0; }
.sc-title { font-weight: 700; color: #8a5a12; white-space: nowrap; }
kbd {
  display: inline-block; min-width: 17px; padding: 0 4px; margin: 0 1px;
  font-family: var(--mono); font-size: 10px; line-height: 17px; text-align: center;
  color: #6b4a10; background: #fff3cf; border: 1px solid var(--warm-line-strong);
  border-bottom-width: 2px; border-radius: 4px;
}
.code-legend, .ide-legend { display: flex; align-items: center; flex-wrap: wrap; gap: 4px 9px; }
.ide-legend { padding: 6px 13px; font-size: 10.5px; color: var(--warm-muted);
              background: var(--warm-bg); border-bottom: 1px solid var(--warm-line); }
.lg { font-style: normal; font-size: 10px; padding: 0 5px; border-radius: 4px; border: 1px solid transparent; }
.lg-kw { color: #b45309; background: #fbeacb; border-color: #edcf96; }
.lg-type { color: #1c6b63; background: #dcf0ec; border-color: #b5ddd5; }
.lg-str { color: #a5402c; background: #f9e2dc; border-color: #eec4b8; }
.lg-num { color: #a33a68; background: #f7e0ea; border-color: #ecc2d5; }
.lg-cm { color: #9a7b3f; background: #f2e9d3; border-color: #e3d3ac; }
.lg-note { margin-left: auto; color: #8a5a12; }

/* --- 在线编程面板：暖黄 --- */
.ide.ide-warm { border-color: var(--warm-line-strong); background: var(--warm-bg); }
.ide-warm .ide-head { background: var(--warm-bg-2); border-bottom-color: var(--warm-line); }
.ide-warm .ide-title small { color: var(--warm-muted); }
.ide-warm .ide-auth { background: #fff3cf; color: #8a5a12; border-color: var(--warm-line-strong); }
.ide-warm .ide-auth.on { background: #fbe6ae; color: #7a4b05; border-color: #e0b659; }
.ide-warm .ide-editor,
.ide-warm .ide-fallback { background: var(--warm-bg); color: var(--warm-ink); }
.ide-warm .ide-fallback { padding: 12px; border: 0; }
.ide-warm .ide-loading { color: var(--warm-muted); }
.ide-warm .ide-editor-wrap { border-bottom-color: var(--warm-line); }
.ide-warm .ide-io textarea,
.ide-warm .ide-out { background: #fffbf0; border-color: var(--warm-line); color: var(--warm-ink); }
.ide-warm .ide-io label { color: var(--warm-ink); }
.ide-warm .ide-out.ok { background: var(--green-soft); border-color: #a7f3d0; color: #065f46; }
.ide-warm .ide-out.no { background: var(--red-soft); border-color: #fecaca; color: #991b1b; }
.ide-optional { border-bottom: 1px solid var(--warm-line); background: #fffbf0; }
.ide-optional > summary { padding: 8px 13px; cursor: pointer; font-size: 11.5px;
                          color: var(--warm-muted); list-style: none; }
.ide-optional > summary::-webkit-details-marker { display: none; }
.ide-optional > summary::before { content: '▸'; display: inline-block; margin-right: 6px; }
.ide-optional[open] > summary::before { content: '▾'; }
.ide-optional > summary:hover { color: #8a5a12; }
.ide-optional .ide-login-form { border-bottom: 0; border-top: 1px solid var(--warm-line); }

@media (max-width: 900px) {
  .tag-audit { padding: 9px 11px; font-size: 11.5px; }
  .ide-shortcuts { gap: 3px 8px; font-size: 10.5px; }
  .ide-shortcuts .sc-title { flex: 1 1 100%; }
  .code-tip { font-size: 10.5px; gap: 3px 7px; }
  .code-legend { flex: 1 1 100%; order: 3; }
  .lg-note { flex: 1 1 100%; margin-left: 0; }
  .ide-optional .ide-login-form input { flex: 1 1 45%; width: auto; }
}

/* ============================================================
   2026-11-09：学习路线 Tab / 首屏自动续载提示条
   ============================================================ */
.auto-bar {
  display: flex; align-items: center; gap: 12px; margin: 0 0 14px;
  padding: 9px 14px; border: 1px solid var(--warm-line);
  border-left: 4px solid var(--warm-line-strong); border-radius: 9px;
  background: var(--warm-bg); color: var(--warm-ink); font-size: 12px; line-height: 1.6;
}
.auto-bar[hidden] { display: none !important; }
.auto-bar span:first-child { flex: 1 1 auto; min-width: 0; }
.auto-bar button {
  flex: 0 0 auto; padding: 4px 12px; border-radius: 7px; font-size: 12px;
  border: 1px solid var(--warm-line-strong); background: #fff; color: #8a5a12;
}

.view-tabs {
  display: flex; gap: 8px; margin: 0 0 16px; padding: 4px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 11px; width: fit-content; max-width: 100%;
}
.vtab {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 16px;
  border: 0; border-radius: 8px; background: transparent;
  color: var(--ink-2); font-size: 13px; white-space: nowrap;
}
.vtab:hover { color: var(--primary); }
.vtab.active { background: var(--surface); color: var(--primary); font-weight: 600; box-shadow: var(--shadow); }
.vtab-new { padding: 0 5px; border-radius: 5px; font-size: 10px; color: #8a5a12; background: var(--warm-bg-2); border: 1px solid var(--warm-line); }

.roadmap { max-width: 100%; }
.rm-head, .rm-stage, .rm-policy {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 16px;
}
.rm-head { padding: 18px 20px; }
.rm-title-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.rm-head h2 { margin: 0; font-size: 19px; }
.rm-badge { padding: 2px 9px; border-radius: 6px; font-size: 11px; color: #8a5a12; background: var(--warm-bg-2); border: 1px solid var(--warm-line); }
.rm-lead { margin: 8px 0 16px; color: var(--ink-2); font-size: 13px; line-height: 1.7; }
.rm-metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin-bottom: 16px; }
.rm-metric { padding: 10px 12px; border-radius: 9px; background: var(--surface-2); }
.rm-metric span { display: block; color: var(--muted); font-size: 11px; }
.rm-metric b { display: block; margin-top: 2px; font-size: 19px; color: var(--primary); font-variant-numeric: tabular-nums; }
.rm-controls { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 18px; }
.rm-controls label { font-size: 12px; color: var(--ink-2); }
.rm-controls select { margin-left: 6px; padding: 5px 8px; border-radius: 7px; border: 1px solid var(--border-strong); background: #fff; color: var(--ink); font-size: 12px; }
.rm-progress { flex: 1 1 220px; min-width: 180px; font-size: 12px; color: var(--ink-2); }
.rm-progress b { color: var(--primary); }
.rm-progress-bar { height: 6px; margin-top: 5px; border-radius: 5px; background: var(--border); overflow: hidden; }
.rm-progress-bar i { display: block; height: 100%; background: var(--primary); border-radius: 5px; transition: width .2s; }
.rm-caveat { margin: 12px 0 0; font-size: 11px; color: var(--warm-muted); }

.rm-policy { padding: 0; background: var(--warm-bg); border-color: var(--warm-line); }
.rm-policy summary { padding: 11px 16px; cursor: pointer; font-size: 13px; font-weight: 600; color: #8a5a12; }
.rm-policy-body { padding: 0 18px 14px; font-size: 12px; color: var(--warm-ink); line-height: 1.8; }
.rm-policy-body p { margin: 6px 0; }
.rm-policy-body ul { margin: 8px 0 0; padding-left: 20px; }
.rm-policy-body li { margin: 3px 0; }
.rm-policy-body code { font-family: var(--mono); font-size: 11px; }

.rm-stage { padding: 0; overflow: hidden; }
.rm-stage-head { display: flex; align-items: center; gap: 14px; padding: 14px 18px; background: var(--surface-2); border-bottom: 1px solid var(--border); }
.rm-stage-no { flex: 0 0 30px; width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; background: var(--primary); color: #fff; font-size: 13px; font-weight: 600; }
.rm-stage-head > div:nth-child(2) { flex: 1 1 auto; min-width: 0; }
.rm-stage-head h3 { margin: 0; font-size: 15px; }
.rm-stage-head p { margin: 2px 0 0; font-size: 11.5px; color: var(--muted); }
.rm-stage-stat { flex: 0 0 auto; text-align: right; font-size: 11.5px; color: var(--ink-2); }
.rm-stage-stat b { color: var(--primary); font-size: 14px; }
.rm-stage-stat span { color: #8a5a12; }
.rm-topics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; padding: 14px 16px; }
.rm-topic { padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); min-width: 0; }
.rm-topic.is-done { border-color: #a7dfc4; background: #f6fcf8; }
.rm-topic.is-doing { border-color: var(--warm-line-strong); background: #fffdf6; }
.rm-topic-head { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 10px; }
.rm-topic-head h4 { margin: 0; font-size: 14px; flex: 1 1 auto; min-width: 0; overflow-wrap: anywhere; }
.rm-weeks { flex: 0 0 auto; padding: 2px 8px; border-radius: 6px; font-size: 11px; color: #8a5a12; background: var(--warm-bg-2); border: 1px solid var(--warm-line); }
.rm-states { flex: 0 0 100%; display: flex; gap: 5px; margin-top: 2px; }
.rm-states button { flex: 1 1 0; padding: 4px 2px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface-2); color: var(--ink-2); font-size: 11px; }
.rm-states button.on { border-color: var(--primary); background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.rm-topic-meta { margin: 8px 0; font-size: 11px; color: var(--muted); line-height: 1.6; }
.rm-topic-meta em { color: #b45309; font-style: normal; }
.rm-qs { margin: 0; padding-left: 20px; font-size: 12px; line-height: 1.7; }
.rm-qs li { margin: 3px 0; overflow-wrap: anywhere; }
.rm-qs a { text-decoration: none; }
.rm-qs a:hover { text-decoration: underline; }
.rm-q-meta { display: block; font-size: 10.5px; color: var(--muted); line-height: 1.5; }
.rm-foot { margin: 4px 0 20px; font-size: 11px; color: var(--muted); text-align: center; }

@media (max-width: 900px) {
  .auto-bar { padding: 8px 11px; font-size: 11.5px; gap: 8px; }
  .view-tabs { width: 100%; }
  .vtab { flex: 1 1 0; justify-content: center; padding: 8px 6px; font-size: 12px; }
  .rm-head { padding: 14px 13px; }
  .rm-head h2 { font-size: 17px; }
  .rm-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rm-controls { gap: 10px; }
  .rm-progress { flex: 1 1 100%; }
  .rm-topics { grid-template-columns: minmax(0, 1fr); padding: 12px; }
  .rm-stage-head { padding: 12px; gap: 10px; flex-wrap: wrap; }
  .rm-stage-stat { flex: 1 1 100%; text-align: left; }
  .rm-policy-body { padding: 0 13px 12px; font-size: 11.5px; }
}