/* 应用题教练 · 明亮儿童友好主题 v2(排版重整 + A4 打印) */
:root {
  --bg: #f6f8fc;
  --card: #ffffff;
  --ink: #1e293b;
  --muted: #64748b;
  --line: #e2e8f0;
  --primary: #4f46e5;
  --primary-soft: #eef2ff;
  --right: #16a34a;
  --wrong: #e11d48;
  --warn: #d97706;
  --gold: #ca8a04;
  --radius: 14px;
  --fam: #4f46e5;
  --fam-soft: #eef2ff;
  --font-ui: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-paper: "Songti SC", "SimSun", Georgia, serif;
}
.fam-invariant { --fam: #6366f1; --fam-soft: #eef2ff; }
.fam-unitize   { --fam: #0284c7; --fam-soft: #e0f2fe; }
.fam-gap       { --fam: #d97706; --fam-soft: #fef3c7; }
.fam-process   { --fam: #059669; --fam-soft: #d1fae5; }

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-ui);
  background: var(--bg); color: var(--ink);
  line-height: 1.65; font-size: 16px;
}
a { color: var(--primary); text-decoration: none; }
button { font: inherit; cursor: pointer; }
input, select { font: inherit; }
.hidden { display: none !important; }
.empty { color: var(--muted); padding: 24px 8px; }
.loading { text-align: center; padding: 80px 0; color: var(--muted); font-size: 20px; }

/* ── 字号层级(统一节奏)─────────────────────── */
h1 { font-size: 23px; line-height: 1.3; }
h2 { font-size: 19px; line-height: 1.35; }
h3 { font-size: 16.5px; line-height: 1.4; }
.sec-title { margin: 32px 0 14px; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.sec-sub { font-size: 13.5px; color: var(--muted); font-weight: 500; }

/* ── 顶栏 ─────────────────────────────────── */
#topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 10px clamp(12px, 4vw, 32px);
  background: rgba(255,255,255,.94); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.logo { font-size: 18px; font-weight: 800; color: var(--ink); white-space: nowrap; }
.top-nav { display: flex; gap: 12px; }
.top-link { font-weight: 600; white-space: nowrap; font-size: 14.5px; }
.badge {
  background: var(--wrong); color: #fff; border-radius: 999px;
  font-size: 11px; padding: 1px 7px; margin-left: 4px; vertical-align: 2px;
}
.top-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.student-switch { display: flex; gap: 4px; }
#langsel { border: 1px solid var(--line); border-radius: 10px; padding: 4px 6px; background: #fff; font-size: 13.5px; }

main { max-width: 980px; margin: 0 auto; padding: 20px clamp(12px, 4vw, 32px) 60px; }
.foot { text-align: center; color: var(--muted); font-size: 12.5px; padding: 24px 16px 40px; }

/* ── 通用组件 ─────────────────────────────── */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px;
  box-shadow: 0 1px 3px rgba(30,41,59,.05);
}
.btn {
  display: inline-flex; align-items: center; gap: 6px; justify-content: center;
  background: #fff; border: 1.5px solid var(--line); color: var(--ink);
  border-radius: 11px; padding: 8px 16px; font-weight: 600; font-size: 15px;
  line-height: 1.4; transition: transform .06s, box-shadow .1s;
}
.btn:hover { box-shadow: 0 2px 8px rgba(30,41,59,.12); }
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .45; cursor: default; box-shadow: none; }
.btn-primary { background: var(--fam, var(--primary)); border-color: transparent; color: #fff; }
.btn-alert { background: var(--wrong); border-color: transparent; color: #fff; }
.btn-right { background: var(--right); border-color: transparent; color: #fff; }
.btn-wrong { background: var(--wrong); border-color: transparent; color: #fff; }
.btn-big { padding: 12px 20px; font-size: 16.5px; border-radius: 13px; }
.btn-sm { padding: 5px 12px; font-size: 13.5px; border-radius: 9px; }
.btn-ghost { border-color: transparent; background: transparent; color: var(--muted); }
.chip {
  display: inline-flex; align-items: center;
  border: 1.5px solid var(--line); background: #fff; color: var(--ink);
  border-radius: 999px; padding: 4px 13px; font-size: 13.5px; font-weight: 600;
  white-space: nowrap;
}
.chip-on { background: var(--fam, var(--primary)); border-color: transparent; color: #fff; }
.chip-row { display: flex; gap: 8px; margin: 10px 0; flex-wrap: wrap; align-items: center; }
.crumb { display: inline-block; color: var(--muted); font-weight: 600; margin-bottom: 12px; font-size: 14.5px; }
.select {
  border: 1.5px solid var(--line); border-radius: 10px; background: #fff;
  padding: 6px 10px; font-size: 14px; font-weight: 600; color: var(--ink);
}

/* ── 首页 ─────────────────────────────────── */
.hero-stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(105px, 1fr));
  gap: 10px; margin-bottom: 14px;
}
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 12px 8px; text-align: center;
}
.stat b { display: block; font-size: 25px; font-variant-numeric: tabular-nums; }
.stat span { font-size: 12.5px; color: var(--muted); }
.stat-alert b { color: var(--wrong); }
.hero-actions {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px; margin-bottom: 8px;
}

.family { margin-top: 36px; }
.family-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.family-head h2 { color: var(--fam); }
.family-headline { font-weight: 700; }
.family-line { color: var(--muted); font-size: 13.5px; margin: 4px 0 14px; }
.model-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(215px, 1fr));
  gap: 14px;
}
.model-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  border-top: 4px solid var(--fam);
  position: relative;
}
.model-thumb { display: block; aspect-ratio: 16/9; overflow: hidden; background: var(--fam-soft); }
.model-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.model-body { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 5px; flex: 1; }
.model-name { font-weight: 800; font-size: 15px; color: var(--ink); }
.model-mantra { font-size: 12.5px; color: var(--fam); font-weight: 600; }
.model-meta { font-size: 12px; color: var(--muted); flex: 1; }
.model-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 6px; }

/* ── 学堂 ─────────────────────────────────── */
.learn-head { display: flex; gap: 20px; align-items: flex-start; }
.learn-img { width: 220px; border-radius: 12px; border: 1px solid var(--line); }
.learn-head h1 { margin: 4px 0 8px; }
.family-badge {
  display: inline-block; background: var(--fam-soft); color: var(--fam);
  font-weight: 700; font-size: 12.5px; border-radius: 999px; padding: 3px 12px;
}
.mantra { margin: 6px 0; font-size: 15.5px; }
.beats { margin: 6px 0 0 20px; color: var(--muted); font-size: 14.5px; }
.learn-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
.learn-cols ul { margin-left: 20px; font-size: 14.5px; }
.learn-cols h3 { margin-bottom: 8px; }
.disamb { margin-top: 10px; font-size: 13.5px; background: var(--fam-soft); border-radius: 10px; padding: 10px 12px; }
.examples { display: flex; flex-direction: column; gap: 16px; }
.example-card { border-left: 5px solid var(--fam); }
.example-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; flex-wrap: wrap; }
.level-chip { background: var(--fam-soft); color: var(--fam); font-weight: 700; font-size: 12.5px; border-radius: 999px; padding: 3px 12px; }
.btn-reveal { margin-top: 12px; width: 100%; border-style: dashed; }
.learn-cta { margin-top: 20px; border-top: 4px solid var(--fam); }
.learn-cta h3 { margin-bottom: 6px; }
.learn-cta p { font-size: 14.5px; color: var(--muted); margin-bottom: 10px; }

/* ── 题干与讲解 ───────────────────────────── */
.stem-zh { font-size: 18.5px; font-weight: 600; line-height: 1.85; margin: 8px 0; }
.stem-en { font-size: 13.5px; color: var(--muted); line-height: 1.6; margin: 2px 0 8px; }
.step {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--fam-soft); border-radius: 12px;
  padding: 10px 14px; margin: 8px 0; font-size: 15px;
}
.step-num {
  flex: none; width: 26px; height: 26px; border-radius: 50%;
  background: var(--fam); color: #fff; font-weight: 800; font-size: 14px;
  display: flex; align-items: center; justify-content: center; margin-top: 2px;
}
.answer-card {
  background: #ecfdf5; border: 1.5px solid #a7f3d0; color: #065f46;
  border-radius: 12px; padding: 12px 14px; margin: 10px 0; font-weight: 600;
}
.answer-detail { font-weight: 500; margin-top: 4px; color: #047857; }

/* ── 刷题 ─────────────────────────────────── */
.drill-top { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.drill-top .crumb { margin: 0; }
.drill-title { font-weight: 800; font-size: 16.5px; }
.drill-progress { margin-left: auto; color: var(--muted); font-weight: 700; font-variant-numeric: tabular-nums; }
.level-picker { display: flex; gap: 8px; align-items: center; margin-bottom: 10px; color: var(--muted); font-size: 14px; }
.origin-note {
  background: #fff7ed; border: 1px solid #fed7aa; color: #9a3412;
  border-radius: 12px; padding: 8px 14px; margin-bottom: 10px; font-size: 13.5px;
}
.q-card { border-top: 5px solid var(--fam); }
.q-tag {
  display: inline-block; background: var(--fam-soft); color: var(--fam);
  font-weight: 700; font-size: 12px; border-radius: 999px; padding: 2px 12px; margin-bottom: 4px;
}
.answer-row { display: flex; align-items: center; gap: 10px; margin: 14px 0 6px; flex-wrap: wrap; }
.answer-row label { font-weight: 700; }
.answer-row input {
  width: 130px; font-size: 20px; font-weight: 700; text-align: center;
  border: 2px solid var(--line); border-radius: 12px; padding: 8px 10px;
}
.answer-row input:focus { outline: none; border-color: var(--fam); }
.unit { color: var(--muted); font-weight: 600; }
.hint-row { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.hint {
  background: #fefce8; border: 1px solid #fde68a; color: #854d0e;
  border-radius: 12px; padding: 9px 14px; margin: 6px 0; font-size: 14px;
}
.fb { border-radius: 12px; padding: 10px 14px; margin: 8px 0; font-size: 15px; }
.fb-right { background: #ecfdf5; border: 1.5px solid #a7f3d0; color: #065f46; }
.fb-wrong { background: #fff1f2; border: 1.5px solid #fecdd3; color: #9f1239; }
.fb-warn { background: #fefce8; border: 1.5px solid #fde68a; color: #854d0e; }
#nextrow { margin-top: 14px; }
.paper-note { color: var(--muted); font-size: 14px; margin: 6px 0 10px; }
.grade-row { display: flex; align-items: center; gap: 10px; margin-top: 14px; flex-wrap: wrap; font-weight: 700; }

/* ── 成绩单 ───────────────────────────────── */
.summary-card { text-align: center; }
.summary-score { font-size: 44px; font-weight: 900; color: var(--primary); margin: 8px 0 14px; }
.summary-list { list-style: none; text-align: left; margin: 0 0 16px; }
.summary-list li {
  display: grid; grid-template-columns: 28px 1fr auto; gap: 8px;
  padding: 7px 4px; border-bottom: 1px dashed var(--line); font-size: 14px;
}
.summary-list li:last-child { border-bottom: none; }
.summary-list .bad { color: var(--wrong); }
.summary-card .model-actions { justify-content: center; }

/* ── 题库 + 通关图 ────────────────────────── */
.bank-toolbar {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: 12px 0;
}
.map-card { padding: 16px 18px; margin-bottom: 14px; }
.map-legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12.5px; color: var(--muted); margin-bottom: 10px; }
.map-legend i { display: inline-block; width: 12px; height: 12px; border-radius: 4px; margin-right: 4px; vertical-align: -1px; }
.map-grid { display: flex; flex-wrap: wrap; gap: 5px; }
.map-cell {
  width: 34px; height: 30px; border-radius: 7px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11.5px; font-weight: 700; font-variant-numeric: tabular-nums;
  background: #e9edf3; color: #7c8798; border: 1px solid transparent;
}
.map-cell:hover { border-color: var(--primary); }
.st-right  { background: #d1fae5; color: #047857; }
.st-train  { background: #ffe0e6; color: #be123c; }
.st-master { background: #fef3c7; color: #a16207; }
.bank-list { display: flex; flex-direction: column; gap: 6px; margin-top: 12px; }
.bank-row {
  display: grid; grid-template-columns: 28px 1fr auto; gap: 10px; align-items: center;
  background: var(--card); border: 1px solid var(--line); border-radius: 11px;
  padding: 9px 14px; color: var(--ink); font-size: 14.5px;
  border-left: 4px solid var(--line);
}
.bank-row:hover { border-color: var(--primary); }
.bank-row.st-right { background: #fff; border-left-color: var(--right); }
.bank-row.st-train { background: #fff; border-left-color: var(--wrong); }
.bank-row.st-master { background: #fff; border-left-color: var(--gold); }
.bank-src { color: var(--muted); font-size: 12px; }

/* ── 错题本 ───────────────────────────────── */
.due-card { margin-bottom: 18px; border-left: 5px solid var(--warn); }
.due-card h3 { margin-bottom: 6px; }
.due-card p { color: var(--muted); font-size: 14px; margin-bottom: 10px; }
.error-list { display: flex; flex-direction: column; gap: 10px; }
.error-row { padding: 14px 16px; }
.error-mastered { opacity: .65; }
.error-stem { font-weight: 600; margin-bottom: 6px; font-size: 15px; }
.error-meta { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; color: var(--muted); font-size: 12.5px; }
.due-now { color: var(--wrong); }
.error-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.error-detail { margin-top: 12px; border-top: 1px dashed var(--line); padding-top: 10px; }
.box-dots { display: inline-flex; gap: 3px; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--line); display: inline-block; }
.dot.on { background: var(--right); }
.empty-card { text-align: center; padding: 44px 20px; }
.empty-card .model-actions { justify-content: center; margin-top: 14px; }

/* ── 训练档案 ─────────────────────────────── */
.log-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(105px, 1fr)); gap: 10px; margin: 12px 0 18px; }
.day-card { padding: 14px 18px; margin-bottom: 10px; }
.day-head { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; cursor: pointer; }
.day-date { font-weight: 800; font-size: 16px; min-width: 108px; }
.day-nums { display: flex; gap: 14px; color: var(--muted); font-size: 13.5px; flex-wrap: wrap; }
.day-nums b { color: var(--ink); font-variant-numeric: tabular-nums; }
.day-acc { margin-left: auto; font-weight: 800; font-variant-numeric: tabular-nums; }
.day-detail { margin-top: 10px; border-top: 1px dashed var(--line); padding-top: 8px; }
.log-item {
  display: grid; grid-template-columns: 24px 52px 1fr auto; gap: 8px; align-items: baseline;
  padding: 5px 2px; font-size: 13.5px; border-bottom: 1px dotted var(--line);
}
.log-item:last-child { border-bottom: none; }
.log-item .mode { color: var(--muted); font-size: 12px; }
.log-item .when { color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }

/* ── 打印中心(屏幕上的控制区)──────────────── */
.print-controls { display: flex; flex-direction: column; gap: 14px; }
.pc-row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; font-size: 14px; }
.pc-row label { font-weight: 700; }
.pc-list { max-height: 340px; overflow-y: auto; border: 1px solid var(--line); border-radius: 10px; padding: 6px; }
.pc-item {
  display: grid; grid-template-columns: 24px 26px 1fr auto; gap: 8px; align-items: center;
  padding: 6px 8px; border-radius: 8px; font-size: 13.5px;
}
.pc-item:hover { background: var(--primary-soft); }
.pc-item .st { font-size: 12px; }
.pc-bar {
  position: sticky; bottom: 0; display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 12px 16px; box-shadow: 0 -2px 12px rgba(30,41,59,.08); margin-top: 14px;
}
.pc-count { font-weight: 800; }
.num-input { width: 64px; text-align: center; border: 1.5px solid var(--line); border-radius: 9px; padding: 5px; font-weight: 700; }

/* ── A4 纸面(屏幕预览 = 打印输出)──────────── */
.sheet {
  background: #fff; color: #111;
  width: min(100%, 794px); margin: 0 auto 22px;
  padding: 40px 46px; border: 1px solid var(--line); border-radius: 4px;
  box-shadow: 0 2px 12px rgba(30,41,59,.10);
  font-family: var(--font-paper);
}
.sheet-head {
  display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap;
  border-bottom: 2.5px solid #111; padding-bottom: 8px; margin-bottom: 6px;
}
.sheet-head h2 { font-size: 19px; font-family: var(--font-ui); }
.sheet-meta { margin-left: auto; font-size: 13px; color: #333; display: flex; gap: 18px; }
.sheet-sub { font-size: 12px; color: #555; margin-bottom: 14px; }
.p-q { padding: 12px 2px 0; break-inside: avoid; page-break-inside: avoid; }
.p-q + .p-q { border-top: 1px solid #ddd; }
.p-num { font-weight: 800; font-family: var(--font-ui); font-size: 14.5px; }
.p-badge {
  font-family: var(--font-ui); font-size: 11px; font-weight: 700; color: #555;
  border: 1px solid #bbb; border-radius: 999px; padding: 1px 9px; margin-left: 8px; vertical-align: 1.5px;
}
.p-badge-variant { color: #9a3412; border-color: #d8b48f; }
.p-stem { font-size: 15.5px; line-height: 1.95; margin: 4px 0 2px; }
.p-en { font-size: 12px; color: #444; line-height: 1.55; margin: 2px 0; font-family: Georgia, serif; }
.p-work { position: relative; }
.p-work::after { content: ''; display: block; }
.p-work.h-s { height: 66px; }
.p-work.h-m { height: 120px; }
.p-work.h-l { height: 185px; }
.p-ansline { display: flex; justify-content: flex-end; font-size: 14px; padding: 2px 4px 12px; }
.p-ansline span { border-bottom: 1px solid #111; min-width: 170px; display: inline-block; margin-left: 8px; }
/* 答案页 */
.sheet-key .p-q { padding: 10px 2px; }
.key-steps { font-size: 13px; line-height: 1.75; margin: 4px 0 2px 2px; }
.key-steps b { font-family: var(--font-ui); }
.key-final { font-size: 13.5px; font-weight: 700; margin-top: 3px; }

/* ── 弹窗 ─────────────────────────────────── */
.modal-mask {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(15,23,42,.45);
  display: flex; align-items: center; justify-content: center; padding: 18px;
}
.modal { max-width: 520px; width: 100%; max-height: 86vh; overflow-y: auto; }
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.modal-p { font-size: 14.5px; color: var(--muted); margin: 8px 0; }
.modal-ol { margin: 8px 0 12px 20px; font-size: 14.5px; }
.modal-ol li { margin: 4px 0; }
.modal-hr { border: none; border-top: 1px dashed var(--line); margin: 16px 0 12px; }

/* ── 打印输出 ─────────────────────────────── */
@media print {
  @page { size: A4; margin: 13mm 12mm; }
  body { background: #fff; }
  #topbar, .foot, .no-print { display: none !important; }
  main { max-width: none; padding: 0; }
  .sheet {
    width: 100%; margin: 0; padding: 0 2mm;
    border: none; border-radius: 0; box-shadow: none;
  }
  .sheet + .sheet { page-break-before: always; }
}

/* ── 移动端 ───────────────────────────────── */
@media (max-width: 720px) {
  body { font-size: 15px; }
  #topbar { gap: 8px; padding: 8px 12px; }
  .logo { font-size: 16px; }
  .top-right { gap: 6px; }
  .chip { padding: 3px 10px; font-size: 12.5px; }
  h1 { font-size: 20px; }
  .learn-head { flex-direction: column; }
  .learn-img { width: 100%; max-width: 340px; }
  .learn-cols { grid-template-columns: 1fr; }
  .drill-progress { margin-left: 0; }
  .stem-zh { font-size: 17px; }
  .map-cell { width: 30px; height: 27px; font-size: 10.5px; }
  .sheet { padding: 22px 18px; }
  .log-item { grid-template-columns: 24px 1fr auto; }
  .log-item .mode { display: none; }
}

/* ── v1.4:快速出题 / 掌握地图 / 批改中心 ───────── */
.quick-pick { margin: 14px 0 4px; display: flex; flex-direction: column; gap: 10px; }
.quick-pick h3 { margin: 0; }
.quick-pick .sec-sub { color: var(--muted); font-size: 12.5px; }

.m-lv {
  position: absolute; top: 8px; right: 8px; z-index: 1;
  background: rgba(255, 255, 255, .92); border: 1px solid var(--line); border-radius: 999px;
  padding: 2px 9px; font-size: 11.5px; font-weight: 700; color: var(--muted);
}
.m-lv-2 { color: var(--primary); border-color: var(--primary); }
.m-lv-3 { color: #92400e; border-color: var(--gold, #f59e0b); background: #fffbeb; }
.fam-progress {
  flex: 1; min-width: 70px; max-width: 180px; height: 8px; border-radius: 999px;
  background: var(--fam-soft, #eef); overflow: hidden; align-self: center;
}
.fam-progress i { display: block; height: 100%; background: var(--fam, var(--primary)); border-radius: 999px; }
.fam-skilled { font-size: 12.5px; color: var(--muted); font-weight: 600; }

.archived-note {
  margin: 10px 0 0; padding: 10px 14px; border-radius: 12px; font-size: 14.5px;
  background: #ecfdf5; border: 1.5px solid #a7f3d0; color: #065f46;
}

/* 批改中心 */
.grade-sec { margin: 18px 0 8px; color: var(--muted); }
.grade-row {
  display: flex; gap: 14px; align-items: center; padding: 12px 16px; margin-bottom: 10px;
  color: var(--ink); text-decoration: none;
}
.g-code {
  font-family: ui-monospace, Menlo, monospace; font-weight: 800; font-size: 16px;
  background: var(--fam-soft, #eef2ff); color: var(--primary); border-radius: 10px; padding: 6px 10px;
  white-space: nowrap;
}
.g-info { flex: 1; display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.g-info small { color: var(--muted); }
.g-state { font-weight: 700; font-size: 13.5px; white-space: nowrap; }
.g-todo { color: var(--wrong); }
.g-part { color: var(--warn); }
.g-done { color: var(--right); }
.g-title { color: var(--muted); font-size: 14px; font-weight: 600; }

.grade-list { padding: 6px 10px; }
.grade-item {
  display: flex; gap: 10px; align-items: center; padding: 9px 4px;
  border-bottom: 1px dashed var(--line);
}
.grade-item:last-child { border-bottom: none; }
.g-num {
  min-width: 30px; height: 30px; border-radius: 999px; background: var(--bg);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; font-variant-numeric: tabular-nums;
}
.g-stem { flex: 1; font-size: 14px; min-width: 0; overflow: hidden; }
.g-stem small { display: block; color: var(--muted); font-size: 12px; }
.g-var {
  display: inline-block; background: #fff7ed; color: #9a3412; border-radius: 6px;
  font-size: 11px; font-weight: 700; padding: 1px 6px; margin-right: 6px;
}
.g-btns { display: flex; gap: 8px; }
.g-mark {
  width: 46px; height: 42px; border-radius: 12px; border: 2px solid var(--line);
  background: var(--card); font-size: 20px; font-weight: 800; cursor: pointer;
  color: var(--muted); transition: all .12s;
}
.g-right.on { background: #ecfdf5; border-color: var(--right); color: var(--right); }
.g-wrong.on { background: #fff1f2; border-color: var(--wrong); color: var(--wrong); }
.g-locked .g-mark { opacity: .55; cursor: default; }
.grade-bar {
  display: flex; gap: 12px; align-items: center; margin: 14px 0; flex-wrap: wrap;
  position: sticky; bottom: 10px; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 10px 16px; box-shadow: 0 6px 20px rgba(30, 41, 59, .08);
}
#g-count { font-weight: 700; color: var(--muted); flex: 1; }

/* 近 7 天柱状图 */
.week-chart {
  display: flex; gap: 10px; align-items: flex-end; justify-content: space-between;
  padding: 14px 18px 10px; margin: 12px 0;
}
.wc-col { display: flex; flex-direction: column; align-items: center; gap: 3px; flex: 1; }
.wc-bar {
  width: 26px; min-height: 3px; border-radius: 6px 6px 2px 2px; background: #c7d2fe;
  display: flex; flex-direction: column; justify-content: flex-end; overflow: hidden;
}
.wc-bar i { display: block; background: var(--primary); border-radius: 0; }
.wc-n { font-size: 11.5px; font-weight: 700; color: var(--muted); min-height: 14px; }
.wc-day { font-size: 11.5px; color: var(--muted); }

@media (max-width: 720px) {
  .grade-row { gap: 10px; padding: 10px 12px; }
  .g-stem { font-size: 13px; }
  .g-mark { width: 42px; height: 40px; }
  .wc-bar { width: 18px; }
  .fam-progress { max-width: 100px; }
}

/* ── v1.5:辨题快闪 / 新模型占位 ─────────────── */
.thumb-emoji {
  display: flex; align-items: center; justify-content: center;
  width: 100%; height: 100%; font-size: 54px;
}
.learn-emoji {
  display: flex; align-items: center; justify-content: center;
  width: 220px; aspect-ratio: 16/10; font-size: 84px; background: var(--fam-soft);
}
.quiz-opts {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px; margin: 14px 0 6px;
}
.quiz-opt { justify-content: flex-start; font-size: 15.5px; padding: 12px 16px; }
.quiz-opt.quiz-hit { background: #ecfdf5; border-color: var(--right); color: #065f46; font-weight: 800; }
.quiz-opt.quiz-miss { background: #fff1f2; border-color: var(--wrong); color: #9f1239; }
.quiz-compare {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 10px 0;
}
.qc-col { border-radius: 12px; padding: 10px 14px; font-size: 13.5px; }
.qc-col p { margin-top: 4px; }
.qc-bad { background: #fff7f8; border: 1.5px dashed #fecdd3; }
.qc-good { background: #f0fdf4; border: 1.5px solid #bbf7d0; }
@media (max-width: 720px) {
  .quiz-compare { grid-template-columns: 1fr; }
  .learn-emoji { width: 100%; max-width: 340px; }
}