:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --ink: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --brand: #2563eb;
  --brand-dark: #1d4ed8;
  --green: #16a34a;
  --red: #dc2626;
  --amber: #d97706;
  --radius: 14px;
  --shadow: 0 2px 10px rgba(0,0,0,.06);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--glass-strong, rgba(255,255,255,.82));
  backdrop-filter: blur(24px) saturate(1.6);
  -webkit-backdrop-filter: blur(24px) saturate(1.6);
  border-bottom: 1px solid var(--stroke, rgba(255,255,255,.9));
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.topbar-main {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
}
.topbar-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex: 1;
}
.tab-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.tab-scroll::-webkit-scrollbar { display: none; }
.back-btn {
  width: 40px;
  height: 40px;
  min-width: 40px;
  border-radius: 12px;
  border: 1px solid var(--stroke-teal, rgba(13,148,136,.16));
  background: var(--glass, rgba(255,255,255,.62));
  color: var(--ink, #0f3d3a);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform .15s, background .2s;
}
.back-btn:active { transform: scale(.92); }
.topbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.brand {
  font-size: 17px;
  font-weight: 700;
  color: var(--teal-600, #0d9488);
  white-space: nowrap;
}
.tabs { display: flex; gap: 6px; flex-wrap: nowrap; min-width: max-content; }
.tab {
  border: none;
  background: transparent;
  color: var(--muted, #5f7d7a);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  cursor: pointer;
  font-weight: 500;
  -webkit-tap-highlight-color: transparent;
}
.tab:hover { background: rgba(var(--teal-rgb),.1); color: var(--teal-700, #0f766e); }
.tab.active { background: var(--teal-600); color: #fff; }
main { max-width: 980px; margin: 0 auto; padding: 20px 16px 40px; }
.footer { text-align: center; color: var(--muted); font-size: 12px; padding: 20px; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
  margin-bottom: 16px;
}
h1, h2 { margin-top: 0; }
h2 { font-size: 22px; }
h3 { margin: 0 0 8px; }
.muted { color: var(--muted); font-size: 13px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.btn {
  display: inline-block;
  border: none;
  background: var(--brand);
  color: #fff;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 15px;
  cursor: pointer;
  font-weight: 600;
}
.btn:hover { background: var(--brand-dark); }
.btn.secondary { background: #eef2ff; color: var(--brand-dark); }
.btn.green { background: var(--green); }
.btn.danger { background: var(--red); }
.btn.small { padding: 6px 12px; font-size: 13px; }
select, input[type="text"] {
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 15px;
  background: #fff;
  color: var(--ink);
}
label { font-weight: 600; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.knowledge-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px 18px; }
.knowledge-card h3 { color: var(--brand-dark); }
.knowledge-card ul { margin: 8px 0; padding-left: 20px; }
.knowledge-card li { margin: 4px 0; }
.knowledge-card table { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: 13px; }
.knowledge-card th, .knowledge-card td { border: 1px solid var(--line); padding: 6px 8px; text-align: left; }
.knowledge-card th { background: #f0f4ff; }
.tip { background: #fef9c3; border: 1px solid #fde047; padding: 8px 12px; border-radius: 10px; margin-top: 8px; }

.q-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px; margin-bottom: 16px; }
.q-meta { color: var(--muted); font-size: 13px; margin-bottom: 8px; display: flex; justify-content: space-between; }
.q-text { font-size: 18px; font-weight: 600; margin-bottom: 16px; }
.options { display: grid; gap: 10px; }
.option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  font-size: 15px;
  cursor: pointer;
}
.option:hover:not(:disabled) { border-color: var(--brand); background: #f5f8ff; }
.option.correct { border-color: var(--green); background: #f0fdf4; }
.option.wrong { border-color: var(--red); background: #fef2f2; }
.option:disabled { cursor: default; opacity: .9; }
.feedback { margin-top: 14px; padding: 12px 14px; border-radius: 12px; }
.feedback.right { background: #f0fdf4; border: 1px solid #bbf7d0; }
.feedback.wrong { background: #fef2f2; border: 1px solid #fecaca; }
.feedback .explain { margin-top: 6px; color: var(--muted); }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px,1fr)); gap: 12px; }
.stat { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; text-align: center; }
.stat .num { font-size: 26px; font-weight: 800; color: var(--brand); }
.stat .lbl { color: var(--muted); font-size: 13px; }

.bar-wrap { display: flex; align-items: center; gap: 10px; margin: 6px 0; }
.bar-label { width: 150px; font-size: 13px; flex-shrink: 0; }
.bar-bg { flex: 1; height: 12px; background: #eef2f7; border-radius: 8px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--green); border-radius: 8px; }
.bar-pct { width: 42px; text-align: right; font-size: 12px; color: var(--muted); }

.day-block { border-left: 4px solid var(--line); padding: 8px 12px; margin-bottom: 8px; background: var(--card); border-radius: 0 10px 10px 0; }
.day-block.today { border-left-color: var(--brand); }
.day-block.done { opacity: .6; }
.day-block .day-title { font-weight: 700; }
.task-list { margin: 6px 0 0; padding-left: 18px; font-size: 14px; }
.task-list li { margin: 2px 0; }

.timer { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--amber); }
.result-box { text-align: center; padding: 30px 20px; }
.result-box .score { font-size: 48px; font-weight: 800; color: var(--brand); }
.result-box .score.pass { color: var(--green); }
.result-box .score.fail { color: var(--red); }
.empty { text-align: center; color: var(--muted); padding: 40px 20px; }
@media (max-width: 640px) {
  .bar-label { width: 110px; }
}

/* 杭州考场模块样式 */
.hz-section { border-left: 4px solid var(--brand); }
.hz-process { margin: 10px 0; padding-left: 24px; }
.hz-process li { margin: 6px 0; padding: 4px 0; font-size: 15px; }
.hz-process li::marker { color: var(--brand); font-weight: 700; }
.hz-venues { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; margin-top: 12px; }
.hz-venue {
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
}
.hz-venue-name { font-size: 16px; font-weight: 700; color: var(--brand-dark); margin-bottom: 6px; }
.hz-venue-detail { font-size: 13px; color: var(--muted); margin: 3px 0; }
.hz-tips { margin: 10px 0; padding-left: 24px; }
.hz-tips li { margin: 6px 0; padding: 4px 0; font-size: 15px; }
.hz-tips li::marker { color: var(--green); }

/* ═══ XBiao 深色模式适配 ═══ */
[data-theme="dark"] {
  --bg: #0f172a;
  --card: #1e293b;
  --ink: #e2e8f0;
  --muted: #94a3b8;
  --line: #334155;
  --brand: var(--teal-400);
  --brand-dark: var(--teal-500);
}
[data-theme="dark"] .topbar {
  background: #1e293b;
  border-color: #334155;
}
[data-theme="dark"] .tab:hover {
  background: rgba(var(--teal-rgb),.12);
  color: var(--teal-400);
}
[data-theme="dark"] select,
[data-theme="dark"] input[type="text"] {
  background: #1e293b;
  border-color: #334155;
  color: #e2e8f0;
}
[data-theme="dark"] .option {
  background: #1e293b;
  border-color: #334155;
  color: #e2e8f0;
}
[data-theme="dark"] .option:hover:not(:disabled) {
  background: rgba(var(--teal-rgb),.08);
  border-color: var(--teal-400);
}
[data-theme="dark"] .option.correct {
  background: rgba(34,197,94,.15);
  border-color: #22c55e;
}
[data-theme="dark"] .option.wrong {
  background: rgba(239,68,68,.15);
  border-color: #ef4444;
}
[data-theme="dark"] .day-block {
  background: #1e293b;
  border-color: #334155;
}
[data-theme="dark"] .bar-bg {
  background: #334155;
}
[data-theme="dark"] .hz-venue {
  background: #1e293b;
  border-color: #334155;
}
[data-theme="dark"] .knowledge-card {
  background: #1e293b;
}
[data-theme="dark"] .knowledge-card th {
  background: rgba(var(--teal-rgb),.1);
}
[data-theme="dark"] .knowledge-card td,
[data-theme="dark"] .knowledge-card th {
  border-color: #334155;
}

/* ── Dark Mode Unify ── */
[data-theme="dark"] body {
  background-color: #0a1f1c;
  color: var(--ink, #e2ece9);
}
[data-theme="dark"] .topbar {
  background: rgba(13,40,37,.85);
  border-color: rgba(var(--teal-rgb),.18);
}
[data-theme="dark"] .back-btn,
[data-theme="dark"] .theme-toggle {
  background: rgba(15,34,34,.7);
  color: var(--teal-400, #2dd4bf);
  border-color: rgba(var(--teal-rgb),.2);
}
[data-theme="dark"] .brand {
  color: var(--teal-400, #2dd4bf);
}
[data-theme="dark"] .tab {
  color: var(--muted, #8ab4af);
}
[data-theme="dark"] .tab:hover {
  color: var(--teal-400, #2dd4bf);
  background: rgba(var(--teal-rgb),.12);
}
[data-theme="dark"] .card,
[data-theme="dark"] .knowledge-card,
[data-theme="dark"] .q-card {
  background: rgba(15,34,34,.72);
  border: 1px solid rgba(var(--teal-rgb),.18);
  color: var(--ink, #e2ece9);
}
[data-theme="dark"] .option,
[data-theme="dark"] select,
[data-theme="dark"] input[type="text"] {
  background: rgba(15,34,34,.6);
  color: var(--ink, #e2ece9);
  border-color: rgba(var(--teal-rgb),.2);
}
[data-theme="dark"] .option:hover:not(:disabled) {
  background: rgba(var(--teal-rgb),.1);
  border-color: var(--teal-400, #2dd4bf);
}
[data-theme="dark"] .knowledge-card h3 {
  color: var(--teal-400, #2dd4bf);
}
[data-theme="dark"] .knowledge-card th {
  background: rgba(var(--teal-rgb),.12);
  color: var(--ink, #e2ece9);
}
[data-theme="dark"] .btn.secondary {
  background: rgba(var(--teal-rgb),.12);
  color: var(--teal-400, #2dd4bf);
}
[data-theme="dark"] .muted,
[data-theme="dark"] .q-meta {
  color: var(--muted, #8ab4af);
}

@media (max-width: 640px) {
  body {
    padding-bottom: calc(56px + env(safe-area-inset-bottom, 0px));
  }
  .topbar {
    padding: 10px 12px;
    gap: 8px;
  }
  .brand {
    font-size: 15px;
  }
}

/* 驾考页头像缩小，避免比例失衡 */
.topbar .user-avatar {
  width: 32px !important;
  height: 32px !important;
  border-radius: 10px !important;
  font-size: 13px !important;
}
.topbar .user-avatar img {
  border-radius: 10px !important;
}
@media (max-width: 480px) {
  .topbar .user-avatar {
    width: 28px !important;
    height: 28px !important;
    border-radius: 9px !important;
  }
  .topbar .user-avatar img { border-radius: 9px !important; }
}