:root {
  color-scheme: light;
  --bg: #eef3f9;
  --canvas: #f6f8fc;
  --surface: #ffffff;
  --surface-2: #f8faff;
  --surface-3: #eef4ff;
  --sidebar: #0b1f33;
  --sidebar-2: #102b47;
  --text: #162033;
  --text-2: #43506a;
  --muted: #5e6e89;
  --line: #e2e8f2;
  --line-strong: #ced8e8;
  --primary: #2767ff;
  --primary-2: #1f56d8;
  --primary-soft: #eaf0ff;
  --cyan: #21c4d6;
  --cyan-soft: #e6fbfd;
  --success: #0ca678;
  --success-soft: #e5f8f1;
  --warning: #e58b13;
  --warning-soft: #fff5df;
  --danger: #e25555;
  --danger-soft: #fff0f0;
  --violet: #7557e8;
  --violet-soft: #f0ecff;
  --shadow-sm: 0 1px 2px rgba(15, 36, 66, 0.05), 0 6px 20px rgba(15, 36, 66, 0.04);
  --shadow-md: 0 10px 35px rgba(15, 36, 66, 0.10);
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --sidebar-width: 244px;
  --header-height: 66px;
  --bottom-nav-height: 70px;
  --font-ui: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #07121f;
  --canvas: #0c1828;
  --surface: #111f31;
  --surface-2: #13243a;
  --surface-3: #172b45;
  --sidebar: #071522;
  --sidebar-2: #0c243a;
  --text: #eef4ff;
  --text-2: #c7d2e4;
  --muted: #8fa1bb;
  --line: #24364e;
  --line-strong: #314864;
  --primary: #5a8aff;
  --primary-2: #78a1ff;
  --primary-soft: #19335f;
  --cyan: #49cfdf;
  --cyan-soft: #14373d;
  --success: #4bd4a6;
  --success-soft: #153a30;
  --warning: #f1ad4f;
  --warning-soft: #3a2b17;
  --danger: #ff8585;
  --danger-soft: #432026;
  --violet: #a08dff;
  --violet-soft: #2d2755;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .25), 0 8px 24px rgba(0,0,0,.12);
  --shadow-md: 0 14px 45px rgba(0, 0, 0, .28);
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg); scroll-behavior: smooth; }
body {
  min-height: 100vh;
  margin: 0;
  font-family: var(--font-ui);
  color: var(--text);
  background:
    radial-gradient(circle at 10% 0%, rgba(39, 103, 255, .09), transparent 30%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
button, input, select, textarea { font: inherit; }
button { color: inherit; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { display: block; }
::selection { background: rgba(39, 103, 255, .18); }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); }
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 24px 16px 18px;
  background:
    radial-gradient(circle at 20% 12%, rgba(54,169,255,.18), transparent 30%),
    linear-gradient(180deg, var(--sidebar), #081725 75%);
  color: #edf5ff;
  display: flex;
  flex-direction: column;
  z-index: 20;
  overflow-y: auto;
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; cursor: pointer; padding: 4px 6px 20px; }
.brand-logo { width: 44px; height: 44px; flex: 0 0 auto; filter: drop-shadow(0 8px 16px rgba(30,92,255,.28)); }
.brand strong { display: block; font-size: 15px; line-height: 1.35; white-space: nowrap; }
.brand span { display: block; margin-top: 3px; color: #95abc1; font-size: 11px; letter-spacing: .02em; white-space: nowrap; }
.brand.compact { padding: 0; }
.brand.compact .brand-logo { width: 38px; height: 38px; }

.desktop-nav, .drawer-nav { display: grid; gap: 3px; }
.nav-group-label { margin: 18px 10px 7px; color: #6f8aa5; font-size: 10px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.nav-link {
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  border: 0;
  border-radius: 11px;
  background: transparent;
  color: #b7c8da;
  display: flex;
  align-items: center;
  gap: 11px;
  cursor: pointer;
  text-align: left;
  font-size: 13px;
  font-weight: 620;
  transition: background .18s ease, color .18s ease, transform .18s ease;
}
.nav-link svg { width: 18px; height: 18px; stroke-width: 1.9; flex: 0 0 auto; }
.nav-link:hover { background: rgba(255,255,255,.06); color: #fff; text-decoration: none; }
.nav-link.active { background: linear-gradient(135deg, rgba(61,120,255,.24), rgba(35,196,214,.12)); color: #fff; box-shadow: inset 0 0 0 1px rgba(123,162,255,.16); }
.nav-link.active svg { color: #6ea0ff; }
.sidebar-foot { margin-top: auto; padding: 18px 7px 0; border-top: 1px solid rgba(255,255,255,.08); }
.source-date { color: #7f98b1; font-size: 10px; line-height: 1.5; margin-bottom: 10px; }
.source-date strong { color: #b7c9db; font-weight: 600; }
.quiet-button {
  border: 0;
  background: transparent;
  color: #a6bbcf;
  padding: 8px 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 12px;
}
.quiet-button svg { width: 17px; height: 17px; }

.main-content { min-width: 0; min-height: 100vh; background: var(--canvas); padding: 30px clamp(24px, 3.4vw, 52px) 52px; }
.mobile-header, .mobile-nav, .mobile-drawer { display: none; }

.page-shell { width: min(1380px, 100%); margin: 0 auto; }
.page-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 25px; }
.page-title h1 { margin: 0; font-size: clamp(24px, 2.3vw, 34px); line-height: 1.2; letter-spacing: -.025em; }
.page-title p { margin: 8px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.page-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }

.primary-button, .secondary-button, .danger-button, .text-button {
  border: 0;
  border-radius: 11px;
  min-height: 40px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease, opacity .16s ease;
}
.primary-button { color: #fff; background: linear-gradient(135deg, var(--primary), #2d7dff); box-shadow: 0 8px 20px rgba(39,103,255,.20); }
.primary-button:hover { transform: translateY(-1px); box-shadow: 0 11px 25px rgba(39,103,255,.27); text-decoration: none; }
.secondary-button { color: var(--primary); background: var(--primary-soft); box-shadow: inset 0 0 0 1px rgba(39,103,255,.13); }
.secondary-button:hover { background: color-mix(in srgb, var(--primary-soft), var(--primary) 7%); transform: translateY(-1px); }
.danger-button { color: var(--danger); background: var(--danger-soft); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--danger), transparent 78%); }
.text-button { color: var(--primary); background: transparent; padding-inline: 8px; }
.primary-button svg, .secondary-button svg, .danger-button svg, .text-button svg { width: 17px; height: 17px; }
.primary-button:disabled, .secondary-button:disabled, .danger-button:disabled { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }
.full { width: 100%; }
.large { min-height: 48px; padding-inline: 22px; font-size: 14px; }
.icon-button {
  width: 40px; height: 40px; padding: 0; border: 1px solid var(--line); border-radius: 11px; background: var(--surface); color: var(--text-2); display: inline-grid; place-items: center; cursor: pointer;
}
.icon-button:hover { color: var(--primary); border-color: color-mix(in srgb, var(--primary), var(--line) 68%); }
.icon-button svg { width: 19px; height: 19px; }
.icon-button.is-active { color: #f1a20f; background: var(--warning-soft); border-color: transparent; }

.surface { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.section-title { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.section-title h2 { margin: 0; font-size: 16px; letter-spacing: -.01em; }
.section-title p { margin: 4px 0 0; color: var(--muted); font-size: 11px; }
.section-link { border: 0; background: transparent; color: var(--primary); cursor: pointer; font-weight: 700; font-size: 12px; }

.stat-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 16px; }
.stat-card { padding: 18px 19px; min-height: 112px; position: relative; overflow: hidden; }
.stat-card::after { content: ""; position: absolute; width: 76px; height: 76px; border-radius: 50%; right: -30px; bottom: -38px; background: var(--primary-soft); opacity: .8; }
.stat-label { color: var(--muted); font-size: 11px; font-weight: 650; }
.stat-value { display: flex; align-items: baseline; gap: 5px; margin-top: 10px; font-size: 27px; line-height: 1; font-weight: 800; letter-spacing: -.035em; color: var(--primary); }
.stat-value small { color: var(--muted); font-size: 11px; font-weight: 600; letter-spacing: 0; }
.stat-note { margin-top: 9px; color: var(--text-2); font-size: 10px; }

.dashboard-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(310px, .85fr); gap: 16px; }
.hero-progress { padding: 24px; display: grid; grid-template-columns: 170px minmax(0, 1fr); align-items: center; gap: 24px; min-height: 252px; }
.progress-ring {
  --progress: 0;
  width: 146px; height: 146px; border-radius: 50%; position: relative; display: grid; place-items: center;
  background: conic-gradient(from 210deg, var(--cyan) calc(var(--progress) * 1%), var(--primary) calc(var(--progress) * 1%), var(--line) 0);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.18);
}
.progress-ring::before { content: ""; position: absolute; inset: 13px; border-radius: 50%; background: var(--surface); box-shadow: inset 0 0 0 1px var(--line); }
.progress-ring-content { position: relative; z-index: 1; text-align: center; }
.progress-ring-content strong { display: block; font-size: 34px; line-height: 1; letter-spacing: -.04em; }
.progress-ring-content span { display: block; margin-top: 7px; color: var(--muted); font-size: 10px; }
.hero-copy h2 { margin: 0; font-size: 21px; letter-spacing: -.02em; }
.hero-copy p { margin: 8px 0 0; color: var(--muted); font-size: 12px; line-height: 1.7; }
.progress-track { height: 7px; border-radius: 999px; background: var(--line); overflow: hidden; margin: 20px 0 14px; }
.progress-track > span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--primary), var(--cyan)); min-width: 0; }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 17px; }

.today-panel { padding: 22px; min-height: 252px; }
.plan-list { display: grid; gap: 8px; }
.plan-item { display: grid; grid-template-columns: 36px minmax(0,1fr) auto; align-items: center; gap: 11px; min-height: 50px; padding: 8px 9px; border-radius: 11px; transition: background .16s ease; cursor: pointer; }
.plan-item:hover { background: var(--surface-2); }
.plan-icon { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; color: var(--primary); background: var(--primary-soft); }
.plan-icon.warn { color: var(--warning); background: var(--warning-soft); }
.plan-icon.danger { color: var(--danger); background: var(--danger-soft); }
.plan-icon svg { width: 18px; height: 18px; }
.plan-item strong { display: block; font-size: 12px; }
.plan-item span { display: block; margin-top: 3px; color: var(--muted); font-size: 10px; }
.plan-count { color: var(--text-2); font-size: 11px; font-weight: 750; }

.dashboard-lower { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(310px, .65fr); gap: 16px; margin-top: 16px; }
.module-panel, .risk-panel, .activity-panel { padding: 22px; }
.module-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 13px 22px; }
.module-row { min-width: 0; }
.module-row-head { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; font-size: 11px; margin-bottom: 7px; }
.module-row-head strong { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.module-row-head span { color: var(--muted); font-size: 10px; }
.mini-bar { height: 6px; border-radius: 999px; background: var(--line); overflow: hidden; }
.mini-bar > span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--primary), var(--cyan)); }
.risk-summary { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }
.risk-box { padding: 15px; border-radius: 12px; background: var(--warning-soft); }
.risk-box.danger { background: var(--danger-soft); }
.risk-box strong { display: block; font-size: 22px; color: var(--warning); }
.risk-box.danger strong { color: var(--danger); }
.risk-box span { color: var(--text-2); font-size: 10px; }
.notice-text { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.75; }

.filter-bar { padding: 14px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.search-box { position: relative; min-width: 240px; flex: 1 1 320px; }
.search-box svg { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); width: 17px; height: 17px; color: var(--muted); }
.search-input, .select-input, .number-input {
  width: 100%; min-height: 40px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--text); outline: none; padding: 0 12px; font-size: 12px;
}
.search-input { padding-left: 40px; }
.search-input:focus, .select-input:focus, .number-input:focus { border-color: color-mix(in srgb, var(--primary), white 45%); box-shadow: 0 0 0 3px rgba(39,103,255,.10); }
.select-wrap { min-width: 150px; }

.setup-grid { display: grid; grid-template-columns: minmax(0,1.2fr) minmax(300px,.8fr); gap: 16px; }
.setup-panel { padding: 23px; }
.field-group { margin-top: 22px; }
.field-group:first-child { margin-top: 0; }
.field-label { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.field-label strong { font-size: 13px; }
.field-label span { color: var(--muted); font-size: 10px; }
.field-label-actions { display: flex; align-items: center; justify-content: flex-end; gap: 7px; }
.field-mini-button { min-height: 26px; padding: 0 7px; border: 0; border-radius: 7px; background: transparent; color: var(--primary); cursor: pointer; font-size: 10px; font-weight: 720; }
.field-mini-button:hover { background: var(--primary-soft); }
.choice-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 9px; }
.choice-button, .toggle-card {
  min-height: 44px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface-2); color: var(--text-2); padding: 9px 11px; cursor: pointer; font-size: 11px; font-weight: 650; text-align: left; transition: border-color .16s, background .16s, color .16s;
}
.choice-button:hover, .toggle-card:hover { border-color: var(--line-strong); }
.choice-button.selected, .toggle-card.selected { border-color: color-mix(in srgb, var(--primary), white 35%); background: var(--primary-soft); color: var(--primary); box-shadow: inset 0 0 0 1px rgba(39,103,255,.08); }
.choice-button.count-all { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.choice-button.count-all small { color: var(--muted); font-size: 9px; font-weight: 700; white-space: nowrap; }
.choice-button.count-all.selected small { color: var(--primary); }
.chapter-choice-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 8px; max-height: 330px; overflow: auto; padding-right: 3px; }
.toggle-card { display: flex; align-items: center; gap: 8px; }
.toggle-card input { accent-color: var(--primary); }
.setup-summary { padding: 23px; position: sticky; top: 22px; align-self: start; }
.summary-number { font-size: 46px; letter-spacing: -.05em; font-weight: 820; color: var(--primary); line-height: 1; }
.summary-number small { font-size: 12px; color: var(--muted); letter-spacing: 0; }
.summary-list { margin: 20px 0; display: grid; gap: 9px; }
.summary-list div { display: flex; justify-content: space-between; gap: 12px; color: var(--text-2); font-size: 11px; }
.summary-list strong { color: var(--text); font-size: 11px; }
.summary-warning { padding: 12px 13px; border-radius: 10px; background: var(--warning-soft); color: var(--text-2); font-size: 10px; line-height: 1.65; margin-bottom: 14px; }
.summary-warning.empty { background: var(--danger-soft); color: var(--danger); }

.session-layout { display: grid; grid-template-columns: minmax(0, 1fr) 278px; gap: 16px; align-items: start; }
.question-panel { padding: clamp(20px,3vw,34px); min-height: 600px; }
.session-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.session-progress { flex: 1 1 auto; }
.session-progress-top { display: flex; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 10px; margin-bottom: 7px; }
.session-timer { min-width: 104px; text-align: center; padding: 9px 12px; border-radius: 10px; background: var(--surface-2); color: var(--text-2); font-size: 12px; font-variant-numeric: tabular-nums; font-weight: 750; }
.session-timer.danger { background: var(--danger-soft); color: var(--danger); }
.question-meta { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 17px; }
.meta-label { display: inline-flex; align-items: center; min-height: 24px; padding: 0 8px; border-radius: 7px; background: var(--surface-2); color: var(--text-2); border: 1px solid var(--line); font-size: 9px; font-weight: 720; }
.meta-label.core { color: var(--primary); background: var(--primary-soft); border-color: transparent; }
.meta-label.warn { color: var(--warning); background: var(--warning-soft); border-color: transparent; }
.meta-label.danger { color: var(--danger); background: var(--danger-soft); border-color: transparent; }
.question-stem { margin: 0; font-size: clamp(18px,2vw,25px); line-height: 1.55; letter-spacing: -.015em; font-weight: 760; }
.question-source { margin-top: 10px; color: var(--muted); font-size: 9px; }
.question-ai-tools { margin-top: 16px; padding: 9px 10px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface-2); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.question-ai-actions { display: flex; align-items: center; gap: 7px; }
.question-tool-button { min-height: 34px; padding: 0 11px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); color: var(--text-2); display: inline-flex; align-items: center; justify-content: center; gap: 7px; cursor: pointer; font-size: 10px; font-weight: 740; transition: transform .16s ease, border-color .16s ease, background .16s ease, color .16s ease; }
.question-tool-button:hover { transform: translateY(-1px); color: var(--primary); border-color: color-mix(in srgb, var(--primary), var(--line) 68%); }
.question-tool-button.ai { color: var(--primary); background: var(--primary-soft); border-color: transparent; }
.question-tool-button svg { width: 15px; height: 15px; }
.question-ai-note { color: var(--muted); font-size: 9px; line-height: 1.45; text-align: right; }
.option-list { display: grid; gap: 11px; margin-top: 28px; }
.option-button {
  width: 100%; min-height: 58px; padding: 11px 14px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface); color: var(--text); display: grid; grid-template-columns: 32px minmax(0,1fr); align-items: center; gap: 12px; text-align: left; cursor: pointer; transition: border-color .16s, background .16s, transform .16s;
}
.option-button:hover { border-color: color-mix(in srgb, var(--primary), var(--line) 60%); transform: translateY(-1px); }
.option-key { width: 32px; height: 32px; border-radius: 50%; background: var(--surface-2); border: 1px solid var(--line); display: grid; place-items: center; color: var(--text-2); font-size: 11px; font-weight: 800; }
.option-text { font-size: 13px; line-height: 1.55; }
.option-button.selected { border-color: var(--primary); background: var(--primary-soft); }
.option-button.selected .option-key { color: #fff; background: var(--primary); border-color: var(--primary); }
.option-button.correct { border-color: var(--success); background: var(--success-soft); }
.option-button.correct .option-key { color: #fff; background: var(--success); border-color: var(--success); }
.option-button.wrong { border-color: var(--danger); background: var(--danger-soft); }
.option-button.wrong .option-key { color: #fff; background: var(--danger); border-color: var(--danger); }
.option-button:disabled { cursor: default; transform: none; }
.answer-panel { margin-top: 22px; border-radius: 14px; border: 1px solid var(--line); background: var(--surface-2); overflow: hidden; }
.answer-result { padding: 15px 17px; display: flex; align-items: center; gap: 10px; font-size: 13px; font-weight: 780; border-bottom: 1px solid var(--line); }
.answer-result.good { color: var(--success); background: var(--success-soft); }
.answer-result.bad { color: var(--danger); background: var(--danger-soft); }
.answer-result svg { width: 19px; height: 19px; }
.explanation { padding: 18px; display: grid; gap: 16px; }
.explain-block h3 { margin: 0 0 6px; font-size: 11px; color: var(--text); }
.explain-block p { margin: 0; color: var(--text-2); font-size: 11px; line-height: 1.75; white-space: pre-wrap; }
.explain-links { display: flex; flex-wrap: wrap; gap: 8px; }
.explain-links a { font-size: 10px; font-weight: 700; }
.question-actions { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 24px; }
.question-actions-left, .question-actions-right { display: flex; gap: 8px; }

.session-sidebar { padding: 19px; position: sticky; top: 20px; }
.session-sidebar h2 { margin: 0; font-size: 13px; }
.palette-head { min-height: 27px; margin-bottom: 10px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.palette-head span, .palette-pager span { color: var(--muted); font-size: 9px; font-weight: 680; }
.palette-pager { margin-bottom: 10px; display: grid; grid-template-columns: 32px minmax(0,1fr) 32px; align-items: center; gap: 7px; text-align: center; }
.palette-pager .icon-button { width: 32px; height: 30px; border-radius: 8px; }
.palette { display: grid; grid-template-columns: repeat(5,1fr); gap: 7px; max-height: 355px; overflow: auto; padding: 1px; }
.palette-button { aspect-ratio: 1; border: 1px solid var(--line); border-radius: 8px; background: var(--surface-2); color: var(--muted); font-size: 9px; font-weight: 700; cursor: pointer; position: relative; }
.palette-button.answered { background: var(--primary-soft); color: var(--primary); border-color: transparent; }
.palette-button.correct { background: var(--success-soft); color: var(--success); border-color: transparent; }
.palette-button.wrong { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.palette-button.current { box-shadow: 0 0 0 2px var(--primary); color: var(--primary); }
.palette-button.marked::after { content: ""; position: absolute; width: 6px; height: 6px; border-radius: 50%; right: 3px; top: 3px; background: var(--warning); }
.palette-legend { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; margin-top: 14px; color: var(--muted); font-size: 9px; }
.legend-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-right: 5px; background: var(--line-strong); }
.legend-dot.blue { background: var(--primary); }.legend-dot.orange{background:var(--warning)}.legend-dot.green{background:var(--success)}.legend-dot.red{background:var(--danger)}

.result-hero { padding: 32px; display: grid; grid-template-columns: 180px minmax(0,1fr); gap: 28px; align-items: center; margin-bottom: 16px; }
.score-ring { --score: 0; width: 160px; height: 160px; border-radius: 50%; background: conic-gradient(var(--primary) calc(var(--score)*1%), var(--line) 0); display: grid; place-items: center; position: relative; }
.score-ring::before { content: ""; position: absolute; inset: 13px; border-radius: 50%; background: var(--surface); }
.score-ring-content { position: relative; text-align: center; }
.score-ring-content strong { display: block; font-size: 42px; letter-spacing: -.05em; }
.score-ring-content span { color: var(--muted); font-size: 10px; }
.result-copy h1 { margin: 0; font-size: 27px; }
.result-copy p { margin: 9px 0 20px; color: var(--muted); font-size: 12px; line-height: 1.7; }
.result-stats { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 10px; }
.result-stat { padding: 13px; border-radius: 11px; background: var(--surface-2); }
.result-stat strong { display: block; font-size: 20px; }
.result-stat span { color: var(--muted); font-size: 9px; }
.breakdown-panel { padding: 22px; }
.breakdown-table, .data-table { width: 100%; border-collapse: collapse; }
.breakdown-table th, .breakdown-table td, .data-table th, .data-table td { padding: 12px 10px; border-bottom: 1px solid var(--line); text-align: left; font-size: 11px; }
.breakdown-table th, .data-table th { color: var(--muted); font-size: 9px; letter-spacing: .03em; font-weight: 750; }
.breakdown-table tr:last-child td, .data-table tr:last-child td { border-bottom: 0; }

.library-list, .review-list, .catalog-list { display: grid; gap: 10px; }
.list-card { padding: 18px 19px; }
.list-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.list-card-title { min-width: 0; }
.list-card-title h3 { margin: 0; font-size: 13px; line-height: 1.55; }
.list-card-title p { margin: 7px 0 0; color: var(--muted); font-size: 9px; }
.list-card-actions { display: flex; gap: 7px; flex: 0 0 auto; }
.list-card-body { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); display: none; }
.list-card.expanded .list-card-body { display: block; }
.answer-line { display: flex; gap: 10px; align-items: flex-start; color: var(--text-2); font-size: 11px; line-height: 1.65; margin: 7px 0; }
.answer-line strong { flex: 0 0 72px; color: var(--text); }
.review-current { margin-top: 13px; padding: 14px; border-radius: 11px; background: var(--primary-soft); }
.review-current strong { display: block; color: var(--primary); font-size: 10px; margin-bottom: 6px; }
.review-current p { margin: 0; font-size: 11px; line-height: 1.7; color: var(--text-2); }
.status-strip { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 10px; }

.catalog-group { margin-bottom: 20px; }
.catalog-group-title { display: flex; align-items: center; gap: 10px; margin: 0 0 10px; font-size: 15px; }
.catalog-group-title span { color: var(--muted); font-size: 10px; font-weight: 600; }
.catalog-card { padding: 18px; }
.catalog-code { color: var(--primary); font-size: 9px; font-weight: 800; letter-spacing: .06em; }
.catalog-card h3 { margin: 6px 0 0; font-size: 13px; }
.catalog-card p { margin: 8px 0 0; color: var(--text-2); font-size: 11px; line-height: 1.7; }
.catalog-footer { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 12px; color: var(--muted); font-size: 9px; }
.importance { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 7px; font-size: 10px; font-weight: 850; }
.importance.S { color: #fff; background: var(--primary); }.importance.A{color:var(--warning);background:var(--warning-soft)}.importance.B{color:var(--text-2);background:var(--surface-2);border:1px solid var(--line)}

.practical-timeline { display: grid; gap: 22px; }
.practical-stage h2 { margin: 0 0 12px; font-size: 16px; }
.practical-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; }
.practical-card { padding: 18px; }
.practical-card h3 { margin: 0; font-size: 13px; }
.practical-card .standard { margin: 12px 0; padding: 13px; background: var(--primary-soft); border-radius: 10px; color: var(--primary); font-size: 12px; line-height: 1.65; font-weight: 720; }
.practical-card p { margin: 0; color: var(--text-2); font-size: 10px; line-height: 1.7; }

.empty-state { min-height: 280px; padding: 42px 24px; display: grid; place-items: center; text-align: center; }
.empty-state-inner { max-width: 420px; }
.empty-icon { width: 60px; height: 60px; border-radius: 18px; margin: 0 auto 16px; display: grid; place-items: center; background: var(--primary-soft); color: var(--primary); }
.empty-icon svg { width: 28px; height: 28px; }
.empty-state h2 { margin: 0; font-size: 18px; }
.empty-state p { margin: 9px 0 19px; color: var(--muted); font-size: 11px; line-height: 1.7; }

.tabs { display: inline-flex; padding: 4px; border-radius: 11px; background: var(--surface-2); border: 1px solid var(--line); gap: 2px; }
.tab-button { min-height: 32px; padding: 0 12px; border: 0; border-radius: 8px; background: transparent; color: var(--muted); cursor: pointer; font-size: 10px; font-weight: 720; }
.tab-button.active { color: var(--primary); background: var(--surface); box-shadow: var(--shadow-sm); }
.pagination { display: flex; align-items: center; justify-content: center; gap: 9px; margin-top: 18px; }
.pagination span { color: var(--muted); font-size: 10px; }

.chart-panel { padding: 22px; }
.activity-chart { width: 100%; height: 190px; overflow: visible; }
.activity-chart .grid-line { stroke: var(--line); stroke-width: 1; }
.activity-chart .line { fill: none; stroke: var(--primary); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.activity-chart .area { fill: url(#activityGradient); opacity: .35; }
.activity-chart .dot { fill: var(--surface); stroke: var(--primary); stroke-width: 2; }
.activity-chart text { fill: var(--muted); font-size: 9px; font-family: var(--font-ui); }
.stats-layout { display: grid; grid-template-columns: minmax(0,1fr) 390px; gap: 16px; }
.chapter-stat-list { display: grid; gap: 14px; }
.chapter-stat-row { display: grid; grid-template-columns: 150px minmax(0,1fr) 62px; align-items: center; gap: 12px; }
.chapter-stat-row strong { font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chapter-stat-row span { color: var(--muted); font-size: 10px; text-align: right; }

.settings-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.settings-panel { padding: 22px; }
.setting-row { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.setting-row:last-child { border-bottom: 0; }
.setting-copy strong { display: block; font-size: 12px; }
.setting-copy span { display: block; margin-top: 4px; color: var(--muted); font-size: 9px; line-height: 1.55; }
.setting-control { min-width: 150px; }
.file-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.official-doc-list { display: grid; gap: 9px; }
.doc-row { padding: 14px 0; border-bottom: 1px solid var(--line); }
.doc-row:last-child { border-bottom: 0; }
.doc-row strong { display: block; font-size: 11px; }
.doc-row span { display: block; margin-top: 4px; color: var(--muted); font-size: 9px; }
.doc-row a { display: inline-block; margin-top: 6px; font-size: 9px; font-weight: 750; }

.toast-region { position: fixed; z-index: 100; right: 22px; bottom: 22px; display: grid; gap: 9px; pointer-events: none; }
.toast { min-width: 260px; max-width: 380px; padding: 13px 15px; border-radius: 12px; background: var(--sidebar); color: #fff; box-shadow: var(--shadow-md); font-size: 11px; line-height: 1.5; animation: toastIn .22s ease both; }
.toast.good { background: #087a5b; }.toast.bad{background:#a43c45}.toast.warn{background:#9a6614}
@keyframes toastIn { from { opacity:0; transform:translateY(8px)} to {opacity:1;transform:none} }

.app-dialog { width: min(520px, calc(100vw - 34px)); border: 0; border-radius: 18px; padding: 0; background: var(--surface); color: var(--text); box-shadow: 0 26px 80px rgba(0,0,0,.28); }
.app-dialog::backdrop { background: rgba(3,12,23,.56); backdrop-filter: blur(4px); }
.dialog-card { padding: 24px; }
.dialog-card h2 { margin: 0; font-size: 18px; }
.dialog-card p { margin: 10px 0 0; color: var(--text-2); font-size: 11px; line-height: 1.75; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 9px; margin-top: 22px; }
.app-dialog.ai-dialog { width: min(720px, calc(100vw - 34px)); max-height: min(88dvh, 820px); overflow: hidden; }
.ai-dialog-card { max-height: min(88dvh, 820px); padding: 25px; overflow-y: auto; }
.ai-dialog-heading { display: flex; align-items: flex-start; gap: 13px; }
.ai-dialog-heading h2 { margin-top: 1px; }
.ai-dialog-heading p { margin-top: 5px; }
.ai-dialog-icon { width: 38px; height: 38px; border-radius: 11px; background: var(--primary-soft); color: var(--primary); display: grid; place-items: center; flex: 0 0 auto; }
.ai-dialog-icon svg { width: 19px; height: 19px; }
.ai-section-label { margin: 19px 0 9px; color: var(--text); font-size: 10px; font-weight: 780; letter-spacing: .03em; }
.ai-mode-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 8px; }
.ai-mode-button { min-height: 59px; padding: 10px 11px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface-2); color: var(--text-2); cursor: pointer; text-align: left; transition: border-color .16s ease, background .16s ease, transform .16s ease; }
.ai-mode-button:hover { transform: translateY(-1px); border-color: var(--line-strong); }
.ai-mode-button strong, .ai-mode-button span { display: block; }
.ai-mode-button strong { color: var(--text); font-size: 11px; }
.ai-mode-button span { margin-top: 4px; color: var(--muted); font-size: 9px; line-height: 1.4; }
.ai-mode-button.selected { border-color: color-mix(in srgb, var(--primary), white 38%); background: var(--primary-soft); box-shadow: inset 0 0 0 1px rgba(39,103,255,.08); }
.ai-mode-button.selected strong { color: var(--primary); }
.ai-preview { margin-top: 11px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface-2); overflow: hidden; }
.ai-preview summary { min-height: 39px; padding: 0 12px; color: var(--text-2); display: flex; align-items: center; justify-content: space-between; gap: 12px; cursor: pointer; font-size: 10px; font-weight: 710; list-style: none; }
.ai-preview summary::-webkit-details-marker { display: none; }
.ai-preview summary::before { content: "+"; width: 18px; height: 18px; border-radius: 6px; background: var(--surface); color: var(--primary); display: grid; place-items: center; flex: 0 0 auto; font-size: 13px; }
.ai-preview[open] summary::before { content: "−"; }
.ai-preview summary span { margin-left: auto; color: var(--muted); font-size: 9px; font-weight: 600; }
.ai-preview textarea { width: 100%; min-height: 230px; max-height: 42dvh; padding: 13px; border: 0; border-top: 1px solid var(--line); outline: 0; resize: vertical; background: var(--surface); color: var(--text-2); font: 10px/1.65 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.ai-target-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 8px; }
.ai-target-button { --ai-accent: var(--primary); min-height: 58px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface); color: var(--text-2); display: grid; grid-template-columns: 34px minmax(0,1fr) 14px; align-items: center; gap: 8px; cursor: pointer; text-align: left; transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease; }
.ai-target-button:hover { transform: translateY(-1px); border-color: color-mix(in srgb, var(--ai-accent), var(--line) 52%); text-decoration: none; }
.ai-target-button.selected { border-color: color-mix(in srgb, var(--ai-accent), var(--line) 48%); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--ai-accent), transparent 83%); }
.ai-target-mark { width: 34px; height: 34px; border-radius: 10px; background: color-mix(in srgb, var(--ai-accent), transparent 88%); color: var(--ai-accent); display: grid; place-items: center; font-size: 9px; font-weight: 830; letter-spacing: -.02em; }
.ai-target-copy { min-width: 0; }
.ai-target-copy strong, .ai-target-copy small { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ai-target-copy strong { color: var(--text); font-size: 10px; }
.ai-target-copy small { margin-top: 3px; color: var(--muted); font-size: 8px; }
.ai-target-button > svg { width: 13px; height: 13px; color: var(--muted); }
.ai-privacy-note { margin-top: 13px; padding: 10px 11px; border-radius: 10px; background: var(--surface-2); color: var(--muted); display: flex; align-items: flex-start; gap: 8px; font-size: 9px; line-height: 1.55; }
.ai-privacy-note svg { width: 15px; height: 15px; color: var(--primary); flex: 0 0 auto; margin-top: 1px; }
.question-tool-button:focus-visible, .ai-mode-button:focus-visible, .ai-target-button:focus-visible, .ai-preview summary:focus-visible, .choice-button:focus-visible, .field-mini-button:focus-visible, .toggle-card:focus-within { outline: 2px solid var(--primary); outline-offset: 2px; }

.noscript { margin: 30px; padding: 20px; background: #fff3cd; color: #503c00; border-radius: 12px; }
.sr-only { position:absolute!important; width:1px!important; height:1px!important; padding:0!important; margin:-1px!important; overflow:hidden!important; clip:rect(0,0,0,0)!important; white-space:nowrap!important; border:0!important; }

@media (max-width: 1180px) {
  :root { --sidebar-width: 218px; }
  .stat-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .dashboard-grid, .dashboard-lower { grid-template-columns: 1fr; }
  .today-panel { min-height: auto; }
  .stats-layout { grid-template-columns: 1fr; }
  .session-layout { grid-template-columns: minmax(0,1fr) 240px; }
}

@media (max-width: 900px) {
  body { background: var(--canvas); }
  .app-shell { display: block; min-height: 100dvh; }
  .sidebar { display: none; }
  .mobile-header {
    position: sticky; top: 0; z-index: 30; min-height: var(--header-height); padding: max(10px, env(safe-area-inset-top)) 14px 10px; background: color-mix(in srgb, var(--surface), transparent 4%); border-bottom: 1px solid var(--line); backdrop-filter: blur(18px); display: flex; align-items: center; justify-content: space-between; gap: 12px;
  }
  .mobile-brand { display: flex; align-items: center; gap: 9px; }
  .mobile-brand img { width: 31px; height: 31px; }
  .mobile-brand strong { font-size: 13px; }
  .mobile-header .icon-button { width: 38px; height: 38px; background: transparent; border-color: transparent; }
  .main-content { min-height: calc(100dvh - var(--header-height)); padding: 20px 14px calc(var(--bottom-nav-height) + 26px + env(safe-area-inset-bottom)); }
  .mobile-nav {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 35; min-height: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom)); padding: 7px 8px max(7px, env(safe-area-inset-bottom)); background: color-mix(in srgb, var(--surface), transparent 3%); border-top: 1px solid var(--line); backdrop-filter: blur(18px); display: grid; grid-template-columns: repeat(5,1fr); gap: 2px;
  }
  .mobile-nav-link { min-width: 0; border: 0; background: transparent; color: var(--muted); display: grid; place-items: center; align-content: center; gap: 4px; border-radius: 10px; cursor: pointer; font-size: 9px; font-weight: 680; }
  .mobile-nav-link svg { width: 20px; height: 20px; }
  .mobile-nav-link.active { color: var(--primary); background: var(--primary-soft); }
  .mobile-drawer { position: fixed; inset: 0; z-index: 80; display: block; visibility: hidden; pointer-events: none; }
  .mobile-drawer.open { visibility: visible; pointer-events: auto; }
  .drawer-backdrop { position: absolute; inset: 0; background: rgba(3,12,23,.58); opacity: 0; transition: opacity .2s ease; }
  .drawer-panel { position: absolute; top: 0; bottom: 0; left: 0; width: min(330px, 88vw); padding: max(18px, env(safe-area-inset-top)) 14px 18px; background: var(--sidebar); color: #edf5ff; transform: translateX(-102%); transition: transform .23s ease; overflow-y: auto; }
  .mobile-drawer.open .drawer-backdrop { opacity: 1; }
  .mobile-drawer.open .drawer-panel { transform: none; }
  .drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 2px 2px 16px; border-bottom: 1px solid rgba(255,255,255,.08); margin-bottom: 10px; }
  .drawer-head .icon-button { background: rgba(255,255,255,.07); border-color: rgba(255,255,255,.08); color: #c7d8e9; }
  .drawer-nav .nav-link { color: #b9cadb; }
  .drawer-nav .nav-link.active { color: #fff; }
  .drawer-actions { margin-top: 18px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.08); }
  .drawer-actions .secondary-button { background: rgba(255,255,255,.08); color: #dce9f7; box-shadow: none; }
  .page-header { margin-bottom: 18px; align-items: flex-start; }
  .page-title h1 { font-size: 23px; }
  .page-title p { font-size: 11px; }
  .page-actions { gap: 7px; }
  .page-actions .primary-button, .page-actions .secondary-button { min-height: 38px; padding-inline: 12px; font-size: 11px; }
  .dashboard-grid, .dashboard-lower, .setup-grid, .settings-grid, .stats-layout { grid-template-columns: 1fr; }
  .setup-summary { position: static; }
  .hero-progress { grid-template-columns: 118px minmax(0,1fr); padding: 20px; min-height: 212px; gap: 16px; }
  .progress-ring { width: 112px; height: 112px; }
  .progress-ring::before { inset: 10px; }
  .progress-ring-content strong { font-size: 27px; }
  .hero-copy h2 { font-size: 17px; }
  .hero-copy p { font-size: 10px; }
  .hero-actions .primary-button, .hero-actions .secondary-button { min-height: 38px; padding-inline: 12px; font-size: 10px; }
  .module-list { grid-template-columns: 1fr; }
  .session-layout { display: block; }
  .question-panel { padding: 19px 16px 22px; min-height: auto; }
  .session-sidebar { display: none; }
  .session-top { margin-bottom: 19px; }
  .session-timer { min-width: 88px; padding: 8px 9px; font-size: 10px; }
  .question-stem { font-size: 18px; }
  .question-ai-tools { flex-wrap: wrap; }
  .option-button { min-height: 55px; padding: 10px 11px; grid-template-columns: 30px minmax(0,1fr); }
  .option-key { width: 30px; height: 30px; }
  .option-text { font-size: 12px; }
  .question-actions { position: sticky; bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom) + 6px); padding: 8px; border-radius: 13px; background: color-mix(in srgb, var(--surface), transparent 3%); border: 1px solid var(--line); box-shadow: var(--shadow-md); backdrop-filter: blur(16px); z-index: 12; }
  .question-actions .primary-button, .question-actions .secondary-button { min-height: 38px; padding-inline: 12px; font-size: 10px; }
  .result-hero { grid-template-columns: 1fr; text-align: center; padding: 24px 18px; }
  .score-ring { margin: 0 auto; }
  .result-stats { grid-template-columns: repeat(2,1fr); }
  .result-copy .hero-actions { justify-content: center; }
  .practical-grid { grid-template-columns: 1fr; }
  .settings-grid { grid-template-columns: 1fr; }
  .stat-card { min-height: 100px; padding: 16px; }
  .stat-value { font-size: 24px; }
  .filter-bar { align-items: stretch; }
  .search-box, .select-wrap { min-width: 100%; flex-basis: 100%; }
  .chapter-choice-grid { grid-template-columns: 1fr; max-height: none; }
  .choice-grid { grid-template-columns: repeat(3,1fr); }
  .field-label { align-items: flex-start; }
  .field-label-actions { flex-wrap: wrap; }
  .list-card { padding: 15px; }
  .list-card-head { gap: 8px; }
  .toast-region { left: 14px; right: 14px; bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom) + 12px); }
  .toast { min-width: 0; max-width: none; width: 100%; }
  .breakdown-panel { overflow-x: auto; }
  .data-table { min-width: 680px; }
}

@media (max-width: 560px) {
  .stat-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 9px; }
  .stat-card { min-height: 94px; }
  .stat-note { display: none; }
  .hero-progress { grid-template-columns: 1fr; text-align: center; }
  .progress-ring { margin: 0 auto; }
  .hero-actions { justify-content: center; }
  .risk-summary { grid-template-columns: 1fr 1fr; }
  .page-actions .hide-mobile { display: none; }
  .question-actions-left .text-button span:last-child { display: none; }
  .question-actions { gap: 6px; }
  .question-actions-left, .question-actions-right { gap: 5px; }
  .question-ai-tools { align-items: stretch; }
  .question-ai-actions { width: 100%; }
  .question-tool-button { flex: 1 1 0; min-height: 38px; }
  .question-ai-note { width: 100%; text-align: left; }
  .ai-dialog-card { padding: 19px; }
  .ai-mode-grid { grid-template-columns: 1fr; }
  .ai-mode-button { min-height: 51px; }
  .ai-target-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .ai-target-button { grid-template-columns: 31px minmax(0,1fr) 13px; }
  .ai-target-mark { width: 31px; height: 31px; }
  .ai-dialog-card .dialog-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .ai-dialog-card .dialog-actions > button { width: 100%; padding-inline: 10px; }
  .choice-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .chapter-stat-row { grid-template-columns: 100px minmax(0,1fr) 46px; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}
.explain-links a,
.catalog-card a,
.practical-card a,
.doc-row a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.explain-links a svg,
.catalog-card a svg,
.practical-card a svg,
.doc-row a svg {
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
}

/* ===== 新增组件 ===== */
mark { background: color-mix(in srgb, var(--warning), transparent 68%); color: inherit; border-radius: 3px; padding: 0 1px; }

.exam-chip { display: inline-flex; align-items: center; gap: 6px; min-height: 30px; padding: 0 11px; border-radius: 999px; background: var(--primary-soft); color: var(--primary); font-size: 11px; font-weight: 750; border: 0; }
.exam-chip svg { width: 14px; height: 14px; }
.exam-chip.urgent { background: var(--danger-soft); color: var(--danger); }
.exam-chip.ghost { cursor: pointer; background: transparent; box-shadow: inset 0 0 0 1px var(--line-strong); color: var(--muted); }
.exam-chip.ghost:hover { color: var(--primary); box-shadow: inset 0 0 0 1px var(--primary); }
.hero-title-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.hero-title-row h2 { margin: 0; }

.toast { display: flex; align-items: center; gap: 10px; justify-content: space-between; pointer-events: auto; }
.toast-action { border: 0; border-radius: 8px; min-height: 30px; padding: 0 12px; background: rgba(255,255,255,.16); color: #fff; cursor: pointer; font-size: 11px; font-weight: 750; flex: 0 0 auto; }
.toast-action:hover { background: rgba(255,255,255,.28); }

.shortcut-hints { margin-top: 12px; color: var(--muted); font-size: 10px; line-height: 1.6; }
.mobile-palette-button { display: none; }

.heatmap { display: flex; gap: 3px; overflow-x: auto; padding-bottom: 4px; }
.heatmap-col { display: grid; gap: 3px; }
.heatmap-cell { width: 13px; height: 13px; border-radius: 3px; background: var(--line); display: inline-block; flex: 0 0 auto; }
.heatmap-cell.empty { background: transparent; }
.heatmap-cell.l0 { background: var(--line); }
.heatmap-cell.l1 { background: color-mix(in srgb, var(--primary), var(--surface) 72%); }
.heatmap-cell.l2 { background: color-mix(in srgb, var(--primary), var(--surface) 48%); }
.heatmap-cell.l3 { background: color-mix(in srgb, var(--primary), var(--surface) 24%); }
.heatmap-cell.l4 { background: var(--primary); }
.heatmap-legend { display: flex; align-items: center; gap: 4px; margin-top: 10px; color: var(--muted); font-size: 10px; }

.pass-line { stroke: var(--success); stroke-width: 1.5; stroke-dasharray: 5 4; }
.pass-label { fill: var(--success); font-size: 9px; font-family: var(--font-ui); }
.activity-chart .dot.pass { stroke: var(--success); }
.activity-chart .dot.fail { stroke: var(--danger); }

.weak-list { display: grid; gap: 9px; }
.weak-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface-2); }
.weak-row .weak-copy strong { display: block; font-size: 12px; }
.weak-row .weak-copy span { display: block; margin-top: 3px; color: var(--muted); font-size: 10px; }
.weak-row .secondary-button { min-height: 34px; padding: 0 12px; font-size: 11px; flex: 0 0 auto; }

.oral-recall-box { margin-top: 28px; padding: 26px 22px; border: 1px dashed var(--line-strong); border-radius: 14px; background: var(--surface-2); text-align: center; }
.oral-recall-box h3 { margin: 0 0 8px; font-size: 15px; }
.oral-recall-box p { margin: 0 auto 16px; max-width: 460px; color: var(--muted); font-size: 12px; line-height: 1.7; }
.oral-grade-bar { margin-top: 16px; padding: 13px 15px; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--line); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.oral-grade-bar span { color: var(--text-2); font-size: 12px; font-weight: 650; }

.note-textarea { width: 100%; margin-top: 14px; padding: 12px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface-2); color: var(--text); font: 13px/1.7 var(--font-ui); resize: vertical; }
.note-textarea:focus { outline: none; border-color: color-mix(in srgb, var(--primary), white 45%); box-shadow: 0 0 0 3px rgba(39,103,255,.10); }
.review-current.note { background: var(--warning-soft); }
.review-current.note strong { color: var(--warning); }
.question-note { margin-top: 16px; }
.question-note p { white-space: pre-wrap; }

.palette-dialog-grid { max-height: min(48dvh, 420px); grid-template-columns: repeat(8, 1fr); }
.palette-dialog .palette-head { margin-bottom: 12px; }

.catalog-actions { margin-top: 12px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.catalog-actions .secondary-button { min-height: 34px; padding: 0 12px; font-size: 11px; }

/* ===== 可读性与可达性提档 ===== */
.question-stem, .option-text, .explain-block p, .answer-line span, .list-card-title h3, .notice-text, .review-current p { overflow-wrap: anywhere; }
.meta-label { font-size: 10px; }
.question-source, .question-ai-note, .list-card-title p, .palette-head span, .palette-pager span, .palette-button, .palette-legend, .catalog-code, .catalog-footer, .result-stat span, .breakdown-table th, .data-table th, .doc-row span, .doc-row a, .setting-copy span { font-size: 10px; }
.stat-note, .plan-item span, .field-label span, .summary-warning, .tab-button, .field-mini-button, .section-title p { font-size: 11px; }
.option-text { font-size: 14px; }
.explain-block p, .answer-line, .review-current p { font-size: 12px; }
.notice-text { font-size: 11.5px; }
.toast { font-size: 12px; }
.ai-mode-button span, .ai-privacy-note, .ai-preview summary span { font-size: 10px; }
.ai-target-copy small { font-size: 9px; }
.field-mini-button { min-height: 32px; padding: 0 10px; }
.tab-button { min-height: 36px; }
.section-link { min-height: 32px; padding: 4px 6px; }

.answer-result.good { color: #06694e; }
.answer-result.bad { color: #ab3535; }
:root[data-theme="dark"] .answer-result.good { color: var(--success); }
:root[data-theme="dark"] .answer-result.bad { color: var(--danger); }

:root[data-font="large"] .question-stem { font-size: clamp(21px, 2.4vw, 29px); }
:root[data-font="large"] .option-text { font-size: 16px; }
:root[data-font="large"] .explain-block p, :root[data-font="large"] .answer-line { font-size: 14px; }
:root[data-font="large"] .review-current p { font-size: 14px; }
:root[data-font="large"] .list-card-title h3 { font-size: 16px; }
:root[data-font="large"] .question-ai-note, :root[data-font="large"] .question-source { font-size: 11px; }
:root[data-font="large"] .oral-recall-box p, :root[data-font="large"] .notice-text { font-size: 13px; }

@media (max-width: 900px) {
  .mobile-palette-button { display: inline-grid; }
  .search-input, .select-input, .number-input, .note-textarea { font-size: 16px; }
  .heatmap-cell { width: 11px; height: 11px; }
  .palette-dialog-grid { grid-template-columns: repeat(6, 1fr); }
  .oral-grade-bar { position: sticky; bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom) + 58px); z-index: 11; }
}