.brand { display:flex; align-items:center; gap:9px; text-align:left; }
.topbar { grid-template-columns:minmax(0,1fr) auto; }
.brand { grid-column:1; }
.topbar-tools { grid-column:2; }
.main,.quiz,.q-card,.exp,.opts,.opt,.exp-opt { min-width:0; max-width:100%; }
.q-stem,.opt > span,.exp-opt > span,.exp-body,.y-verdict { overflow-wrap:anywhere; white-space:normal; }
.opt > b,.exp-opt > b { flex:none; }
.opt > span,.exp-opt > span { flex:1; min-width:0; }
.opt[disabled] { pointer-events:none; }
body.is-practicing .main,.quiz,.quiz button { touch-action:pan-y pinch-zoom; }
.brand img { object-fit:contain; }
.search-row { padding:16px; }
.search-row input, .answer-entry { width:100%; padding:11px 13px; color:var(--ink); background:var(--surface); border:1.5px solid var(--line-2); border-radius:var(--r-m); }
.home-actions { display:grid; grid-template-columns:1.15fr .85fr; gap:9px; margin-top:17px; }
.type-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:9px; padding:0 16px; }
.type-card { text-align:left; padding:12px; min-height:86px; border-radius:var(--r-m); background:var(--surface); border:1px solid var(--line); box-shadow:var(--sh-s); }
.type-card b { display:block; font-size:14px; }
.type-card span { display:block; margin-top:3px; color:var(--ink-2); font-size:11px; }
.type-card.is-on { background:var(--pika-soft); border-color:var(--pika-deep); }
.y-note { margin:12px 16px; }
.quiz { max-width:760px; margin:0 auto; }
.quiz-meta { position:sticky; top:56px; z-index:20; background:var(--paper); padding:11px 16px 7px; }
.q-card { margin:12px 16px; }
.option-concept { display:block; font-weight:600; margin-bottom:6px; }
.analysis-warning { margin-top:12px; padding:10px 12px; border:1px solid var(--cheek); border-radius:var(--r-m); background:var(--cheek-soft); font-size:13px; }
.analysis-warning strong { display:block; margin-bottom:4px; }
.toast.is-show { opacity:1; transform:translate(-50%,0); }
.opts { padding:0 16px; }
.memory-reveal { margin:8px 16px; }
.memory-reveal .btn { min-height:44px; }
.home-actions [data-start="memorize"] { grid-column:1 / -1; }
.opt { width:100%; cursor:pointer; }
.opt.is-selected { border-color:var(--thunder); background:var(--thunder-soft); }
.opt.is-correct { border-color:var(--leaf); background:var(--leaf-soft); }
.opt.is-wrong { border-color:var(--cheek); background:var(--cheek-soft); }
.subjective-box { padding:0 16px; margin-top:12px; }
.subjective-box textarea { width:100%; min-height:130px; resize:vertical; padding:12px; color:var(--ink); background:var(--surface); border:1.5px solid var(--line-2); border-radius:var(--r-m); line-height:1.8; }
.subjective-box .hint { margin:7px 2px 0; color:var(--ink-3); font-size:11px; }
.y-verdict { margin:12px 16px; padding:12px 14px; border-radius:var(--r-m); background:var(--leaf-soft); }
.y-verdict.is-bad { background:var(--cheek-soft); }
.y-verdict strong { display:block; }
.y-verdict span { display:block; font-size:12px; color:var(--ink-2); margin-top:3px; }
.exp { margin:14px 16px; }
.q-actions { display:flex; flex-wrap:wrap; justify-content:space-between; gap:8px; padding:12px 16px 30px; }
.q-actions .btn { flex:1; min-width:125px; }
.result-card, .wrong-row { margin:0 16px 9px; }
.result-card { padding:13px; background:var(--surface); border:1px solid var(--line); border-radius:var(--r-m); }
.result-card h3 { font-size:14px; }
.result-card p { margin-top:4px; color:var(--ink-2); font-size:12px; }
.result-card .btn { margin-top:10px; }
.wrong-row { display:grid; grid-template-columns:1fr auto; gap:10px; align-items:center; padding:12px; background:var(--surface); border:1px solid var(--line); border-radius:var(--r-m); text-align:left; }
.wrong-row span { display:block; color:var(--ink-2); font-size:11px; margin-top:3px; }
.wrong-row b { font-size:13px; line-height:1.65; }
.section-pad { padding:0 16px 22px; }
.section-pad .sec-head { margin-top:18px; }
.filter-row { display:flex; gap:7px; overflow:auto; padding:0 16px 6px; }
.filter-row button { white-space:nowrap; }
.mine-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:8px; margin:14px 16px; }
.mine-stat { text-align:center; padding:12px 5px; background:var(--surface); border:1px solid var(--line); border-radius:var(--r-m); }
.mine-stat strong { display:block; font-size:21px; font-family:var(--display); }
.mine-stat span { font-size:10px; color:var(--ink-2); }
.source-line { margin-top:8px; color:var(--ink-3); font-size:10px; }
.source-line a { color:var(--pika-deep); text-decoration:underline; text-underline-offset:2px; }
.question-jump { margin:8px 16px 12px; padding:10px 11px; border:1px solid var(--line); border-radius:var(--r-m); background:var(--surface); }
.question-jump__bar { display:flex; align-items:center; flex-wrap:wrap; gap:9px; }
.question-jump__bar > span { color:var(--ink-2); font-size:11px; }
.question-jump__legend { margin-left:auto; display:flex; align-items:center; gap:5px; }
.question-jump__legend i { width:8px; height:8px; border-radius:50%; background:var(--line-2); }
.question-jump__legend i.is-current { background:var(--pika-deep); }
.question-jump__legend i.is-done { background:var(--leaf); }
.question-map { display:grid; grid-template-columns:repeat(auto-fill,minmax(38px,1fr)); gap:6px; max-height:min(38vh,340px); overflow:auto; overscroll-behavior:contain; padding:10px 2px 2px; }
.question-map__item { min-height:36px; border:1px solid var(--line); border-radius:9px; background:var(--paper); color:var(--ink-2); font-size:12px; cursor:pointer; }
.question-map__item.is-done { border-color:color-mix(in srgb,var(--leaf) 42%,var(--line)); color:var(--leaf); background:var(--leaf-soft); }
.question-map__item.is-current { border-color:var(--pika-deep); background:var(--pika-deep); color:var(--surface); font-weight:700; }
.q-figure { display:block; margin:14px 0; padding:8px; border:1px solid var(--line); border-radius:var(--r-m); background:var(--paper); }
.q-figure img { display:block; width:auto; max-width:100%; max-height:420px; margin:0 auto; object-fit:contain; }
.q-figure figcaption { margin-top:6px; color:var(--ink-3); text-align:center; font-size:10px; }
.exp--answer .exp-head h3 { font-size:18px; }
.exp-answer-text { color:var(--ink); font-size:14px; line-height:1.9; }
.exp-answer-text p { white-space:pre-wrap; }
.exp--answer .source-line { margin-top:13px; }
.hidden { display:none!important; }
@media (min-width:680px) {
  .type-grid { grid-template-columns:repeat(3,minmax(0,1fr)); }
  .home-actions { max-width:550px; }
  .q-card,.opts,.subjective-box,.exp,.y-verdict,.question-jump,.q-figure { margin-left:24px; margin-right:24px; }
}
@media (max-width:679px) {
  body.is-practicing .topbar { min-height:calc(44px + var(--safe-t)); }
  body.is-practicing .brand img { width:28px; height:28px; }
  body.is-practicing .brand-text strong { font-size:14px; }
  body.is-practicing .brand-text small { display:none; }
  body.is-practicing .icon-btn { width:34px; height:34px; }
  body.is-practicing .tabbar { padding-top:3px; padding-bottom:calc(3px + var(--safe-b)); }
  body.is-practicing .tab { min-height:44px; padding:3px 4px; gap:0; }
  body.is-practicing .tab-ico { height:18px; font-size:14px; }
  body.is-practicing .tab-txt { font-size:9px; }
  body.is-practicing .main { min-height:calc(100svh - 44px - var(--safe-t)); padding-bottom:calc(56px + var(--safe-b)); }
  .quiz { position:relative; }
  .quiz { padding-bottom:16px; animation:none; }
  .quiz .quiz-bar,.quiz .quiz-meta { position:relative; top:auto; }
  .quiz-bar { height:3px; }
  .quiz-meta { min-height:44px; padding:5px 88px 5px 10px; flex-wrap:wrap; gap:4px 8px; font-size:11px; }
  .quiz-meta .grow { flex:0 1 auto; white-space:normal; }
  .question-jump { margin:0; padding:0; border:0; border-radius:0; background:none; }
  .question-jump__bar { position:absolute; z-index:21; top:3px; right:8px; }
  .question-jump__bar > span { display:none; }
  #questionMapToggle { min-height:44px; padding:5px 8px; font-size:11px; background:none; border:0; border-radius:8px; }
  .question-map { margin:0 10px 8px; padding:6px; background:var(--surface); border:1px solid var(--line); border-radius:10px; }
  .q-card,.question-jump,.exp,.y-verdict { margin-left:10px; margin-right:10px; }
  .q-card { position:relative; margin-top:4px; margin-bottom:8px; padding:10px; border-radius:16px; }
  .q-tags { min-height:24px; margin-bottom:5px; padding-right:65px; gap:4px; }
  .q-tags .chip { padding:1px 6px; font-size:10px; }
  .q-no { display:none; }
  .opts,.q-actions { padding-left:10px; padding-right:10px; }
  .memory-reveal { margin:6px 10px; }
  .q-tools { margin:0; padding:0; border:0; }
  .q-tools > span { display:none; }
  #starButton { position:absolute; right:5px; top:0; min-height:44px; padding:4px 8px; background:none; border:0; font-size:11px; }
  .q-stem,.opt > span { font-size:14px; line-height:1.5; }
  .opts { gap:6px; margin-top:0; }
  .opt { min-height:44px; padding:8px 10px; gap:8px; border-radius:12px; }
  .opt > b { font-size:14px; line-height:1.5; }
  .q-actions { gap:6px; margin-top:8px; padding-top:0; padding-bottom:12px; }
  .q-actions .btn { min-width:0; min-height:40px; padding:7px 6px; font-size:12px; }
  .exp-head { flex-wrap:wrap; }
  .exp-head .point { max-width:100%; }
  .exp-opt > span { font-size:14px; }
  .question-jump__legend { display:none; }
}