/* ============ IELTS CBT Simulator · stylesheet ============ */
/* hidden 属性优先：避免组件自身的 display 覆盖 UA 的 [hidden]{display:none}
   （此前 .drawer 的 display:flex 会让未打开的生词本抽屉一直占据右侧 420px） */
[hidden]{display:none !important}
:root{
  --bg:#f2f4f7;
  --paper:#ffffff;
  --ink:#101828;
  --ink-2:#344054;
  --muted:#667085;
  --line:#e4e7ec;
  --line-2:#d0d5dd;
  --accent:#b5121b;
  --accent-soft:#fdf2f2;
  --navy:#12263f;
  --navy-2:#1b3a5c;
  --teal:#0f6f7a;
  --ok:#0d7a55;
  --ok-bg:#e9f7f1;
  --bad:#b42318;
  --bad-bg:#fef3f2;
  --warn:#b54708;
  --warn-bg:#fffaeb;
  --blue:#175cd3;
  --blue-bg:#eff6ff;
  --radius:10px;
  --shadow-s:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);
  --shadow-m:0 4px 12px rgba(16,24,40,.08),0 12px 32px rgba(16,24,40,.08);
  --shadow-l:0 24px 64px rgba(16,24,40,.18);
  --fs-passage:17px;
  --sans:"Segoe UI",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --serif:Georgia,"Times New Roman","Songti SC",serif;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
a{color:var(--blue);text-decoration:none}
::selection{background:#ffe58f}

/* ---------- top bar ---------- */
.topbar{
  height:58px;background:#fff;border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:18px;padding:0 20px;
  position:sticky;top:0;z-index:60;
}
.brand{display:flex;align-items:baseline;gap:10px;cursor:pointer;user-select:none}
.brand .logo{
  font-family:var(--serif);font-weight:700;font-size:24px;letter-spacing:-.5px;color:var(--accent);
}
.brand .sub{font-size:12px;color:var(--muted);letter-spacing:.4px}
.tb-spacer{flex:1}
.tb-sec{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-2)}
.tb-chip{
  background:var(--navy);color:#fff;border-radius:6px;padding:3px 10px;font-size:12px;
  letter-spacing:.6px;font-weight:600;
}
.tb-chip.alt{background:var(--accent)}
.timer{
  display:flex;align-items:center;gap:8px;background:#0f172a;color:#fff;
  padding:6px 14px;border-radius:8px;font-variant-numeric:tabular-nums;
  font-size:17px;font-weight:600;letter-spacing:.5px;
}
.timer.warn{background:var(--bad)}
.timer.warn .dot{background:#fff}
.timer .dot{width:7px;height:7px;border-radius:50%;background:#4ade80;box-shadow:0 0 8px #4ade80}
.timer.paused .dot{background:#fbbf24;box-shadow:none}
.icon-btn{
  width:34px;height:34px;border:1px solid var(--line-2);background:#fff;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);
  font-size:13px;transition:.15s;
}
.icon-btn:hover{background:#f9fafb;border-color:var(--line-2);color:var(--ink)}
.icon-btn.on{background:var(--navy);border-color:var(--navy);color:#fff}
.btn{
  border:1px solid var(--line-2);background:#fff;color:var(--ink-2);
  padding:8px 16px;border-radius:8px;font-size:14px;font-weight:500;transition:.15s;
  display:inline-flex;align-items:center;gap:7px;white-space:nowrap;
}
.btn:hover{background:#f9fafb;color:var(--ink)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:#960e16;border-color:#960e16}
.btn.dark{background:var(--navy);border-color:var(--navy);color:#fff}
.btn.dark:hover{background:var(--navy-2)}
.btn.ghost{border-color:transparent;background:transparent}
.btn.ghost:hover{background:#f2f4f7}
.btn.sm{padding:5px 11px;font-size:13px}
.btn.lg{padding:12px 26px;font-size:15px}
.btn:disabled{opacity:.45;cursor:not-allowed}

/* ---------- main / home ---------- */
.main{min-height:calc(100vh - 58px)}
.wrap{max-width:1180px;margin:0 auto;padding:28px 20px 80px}
.hero{
  background:linear-gradient(120deg,#101f33 0%,#1d3b5c 55%,#26506f 100%);
  color:#fff;border-radius:18px;padding:34px 38px;margin-bottom:26px;position:relative;overflow:hidden;
}
.hero:after{
  content:"";position:absolute;right:-80px;top:-90px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.10),transparent 65%);
}
.hero h1{margin:0 0 10px;font-size:30px;letter-spacing:-.5px;font-weight:650}
.hero p{margin:0;color:#cfd8e3;max-width:660px;font-size:14.5px;line-height:1.75}
.hero .kicker{
  display:inline-block;font-size:11.5px;letter-spacing:2px;text-transform:uppercase;
  color:#ffb4b8;margin-bottom:12px;font-weight:700;
}
.hero-stats{display:flex;gap:34px;margin-top:24px;flex-wrap:wrap}
.hero-stats div span{display:block;font-size:11.5px;color:#9fb3c8;letter-spacing:.5px;margin-bottom:2px}
.hero-stats div b{font-size:21px;font-weight:650}
.hero-actions{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap}

.section-title{
  display:flex;align-items:center;justify-content:space-between;gap:14px;margin:34px 0 14px;
}
.section-title h2{margin:0;font-size:17px;font-weight:650;letter-spacing:-.2px;display:flex;align-items:center;gap:9px}
.section-title h2:before{content:"";width:4px;height:17px;background:var(--accent);border-radius:2px}
.section-title .hint{font-size:12.5px;color:var(--muted)}

.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.chip-btn{
  border:1px solid var(--line-2);background:#fff;border-radius:999px;padding:6px 14px;
  font-size:13px;color:var(--ink-2);transition:.15s;
}
.chip-btn:hover{border-color:var(--ink-2)}
.chip-btn.on{background:var(--navy);border-color:var(--navy);color:#fff}

.paper-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:16px}
.paper-card{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 18px 16px;
  transition:.18s;position:relative;overflow:hidden;display:flex;flex-direction:column;
}
.paper-card:hover{border-color:#c3ccd8;box-shadow:var(--shadow-m);transform:translateY(-2px)}
.paper-card .pnum{
  font-family:var(--serif);font-size:32px;font-weight:700;color:#e8ecf1;line-height:1;
  position:absolute;right:16px;top:12px;
}
.paper-card h3{margin:0 0 4px;font-size:15.5px;font-weight:650;padding-right:44px;line-height:1.45}
.paper-card .meta{font-size:12.5px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.paper-card .tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}
.tag{font-size:11px;padding:2.5px 8px;border-radius:5px;background:#f2f4f7;color:var(--ink-2);letter-spacing:.2px}
.tag.red{background:var(--accent-soft);color:var(--accent)}
.tag.blue{background:var(--blue-bg);color:var(--blue)}
.tag.green{background:var(--ok-bg);color:var(--ok)}
.paper-card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px}

/* ---------- 题库分组：基础题库 / 每日更新 ---------- */
.bank-sub{display:flex;align-items:baseline;gap:10px;margin:2px 0 12px}
.bank-sub b{font-size:13px;font-weight:650;letter-spacing:.3px;color:var(--ink)}
.bank-sub span{font-size:12px;color:var(--muted)}
.date-group{display:grid;grid-template-columns:88px 1fr;gap:18px;margin-bottom:12px}
.date-group:last-child{margin-bottom:0}
.date-rail{padding-top:13px;display:flex;flex-direction:column;align-items:flex-end;gap:2px;text-align:right}
.date-rail b{font-family:var(--serif);font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.5px;line-height:1.1}
.date-rail span{font-size:11.5px;color:var(--muted);line-height:1.5}
.date-rail .tag{margin-top:3px}
.update-list{display:flex;flex-direction:column;gap:10px;min-width:0}
.update-item{
  display:flex;align-items:center;gap:18px;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:14px 16px;transition:.18s;cursor:pointer;
}
.update-item:hover{border-color:#c3ccd8;box-shadow:var(--shadow-m);transform:translateY(-1px)}
.update-item.is-new{border-color:#eec9cb;background:linear-gradient(180deg,#fffdfd,#fff)}
.update-item .ui-main{flex:1;min-width:0}
.update-item h3{
  margin:0 0 4px;font-size:14.5px;font-weight:650;line-height:1.5;
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.update-item .ui-meta{font-size:12px;color:var(--muted);line-height:1.6}
.update-item .ui-side{display:flex;align-items:center;gap:12px;flex-shrink:0}
.tag.new{background:var(--accent);color:#fff}
.date-group.flash .update-item{border-color:#e79a9f;box-shadow:0 0 0 3px rgba(181,18,27,.09)}
@media(max-width:720px){
  .date-group{grid-template-columns:56px 1fr;gap:10px}
  .date-rail b{font-size:16px}
  .update-item{flex-direction:column;align-items:stretch;gap:10px}
  .update-item .ui-side{justify-content:space-between}
}
.score-badge{font-size:12px;color:var(--muted)}
.score-badge b{color:var(--ink);font-size:15px;font-variant-numeric:tabular-nums}

/* ---------- modal ---------- */
.mask{
  position:fixed;inset:0;background:rgba(16,24,40,.55);backdrop-filter:blur(3px);
  z-index:200;display:flex;align-items:center;justify-content:center;padding:24px;
  animation:fade .18s ease;
}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal{
  background:#fff;border-radius:16px;max-width:640px;width:100%;max-height:88vh;overflow:auto;
  box-shadow:var(--shadow-l);animation:pop .2s cubic-bezier(.2,.9,.3,1.2);
}
.modal.wide{max-width:900px}
@keyframes pop{from{transform:translateY(12px) scale(.98);opacity:0}to{transform:none;opacity:1}}
.modal-head{padding:22px 26px 0}
.modal-head h3{margin:0 0 6px;font-size:19px;letter-spacing:-.3px}
.modal-head p{margin:0;color:var(--muted);font-size:13.5px}
.modal-body{padding:18px 26px 4px}
.modal-foot{padding:16px 26px 22px;display:flex;justify-content:flex-end;gap:10px;flex-wrap:wrap}
.opt-card{
  border:1.5px solid var(--line);border-radius:10px;padding:13px 15px;margin-bottom:9px;
  cursor:pointer;transition:.15s;display:flex;gap:12px;align-items:flex-start;
}
.opt-card:hover{border-color:var(--line-2);background:#fafbfc}
.opt-card.on{border-color:var(--accent);background:var(--accent-soft)}
.opt-card .radio{
  width:17px;height:17px;border-radius:50%;border:1.5px solid var(--line-2);margin-top:2px;flex:0 0 auto;
  position:relative;
}
.opt-card.on .radio{border-color:var(--accent)}
.opt-card.on .radio:after{
  content:"";position:absolute;inset:3.5px;border-radius:50%;background:var(--accent);
}
.opt-card b{display:block;font-size:14px;font-weight:600;margin-bottom:2px}
.opt-card span{font-size:12.5px;color:var(--muted);line-height:1.6}

/* ---------- exam shell ---------- */
.exam-wrap{height:calc(100vh - 58px);display:flex;flex-direction:column;background:#fff}
.exam-body{flex:1;display:flex;min-height:0;position:relative}
.pane{overflow:auto;padding:0;min-width:0}
.pane-inner{padding:26px 30px 70px;max-width:760px}
.pane.passage{background:#fff;border-right:1px solid var(--line);flex:0 0 52%}
.pane.questions{flex:1;background:#fcfcfd}
.splitter{width:7px;flex:0 0 7px;cursor:col-resize;background:transparent;position:relative;z-index:5}
.splitter:after{content:"";position:absolute;left:3px;top:0;bottom:0;width:1px;background:var(--line)}
.splitter:hover:after{background:var(--teal);width:2px}

.passage h2{font-size:21px;line-height:1.4;margin:0 0 6px;letter-spacing:-.3px}
.passage .passage-sub{font-size:12.5px;color:var(--muted);margin-bottom:20px;letter-spacing:.3px}
.para{font-family:var(--serif);font-size:var(--fs-passage);line-height:1.85;color:#1a2433;margin:0 0 17px}
.para .plabel{
  font-family:var(--sans);font-weight:700;font-size:12px;color:var(--accent);
  margin-right:6px;vertical-align:1px;
}
.q-instruction{
  background:#f7f9fc;border:1px solid var(--line);border-left:3px solid var(--navy);
  border-radius:8px;padding:12px 15px;margin:0 0 18px;font-size:13.5px;color:var(--ink-2);line-height:1.7;
}
.q-instruction b{color:var(--ink)}
.q-instruction .caps{text-transform:uppercase;font-weight:700;letter-spacing:.3px;font-size:12.5px}

/* question rows */
.q-group{margin:26px 0 10px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.q-group:first-child{margin-top:0}
.q-group h4{margin:0 0 5px;font-size:14.5px;font-weight:700}
.q-group p{margin:0;font-size:13px;color:var(--ink-2);line-height:1.7}
.q-group p.upper{text-transform:uppercase;font-weight:600;font-size:12px;letter-spacing:.4px;color:var(--muted)}

.q-row{display:flex;gap:11px;padding:9px 10px;border-radius:8px;margin-bottom:2px;align-items:flex-start;transition:background .12s}
.q-row:hover{background:#f8fafc}
.q-num{
  flex:0 0 auto;min-width:26px;height:26px;border-radius:6px;background:#fff;border:1px solid var(--line-2);
  display:inline-flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:600;
  color:var(--ink-2);font-variant-numeric:tabular-nums;margin-top:1px;
}
.q-row.answered .q-num{background:var(--navy);border-color:var(--navy);color:#fff}
.q-row.flag .q-num{background:var(--warn);border-color:var(--warn);color:#fff}
.q-text{font-size:14.5px;line-height:1.85;flex:1;min-width:0}
.q-text p{margin:0 0 8px}
.gap-input{
  border:none;border-bottom:1.5px solid #98a2b3;background:#fff;min-width:120px;width:150px;
  padding:1px 6px;margin:0 4px;font-size:14px;font-weight:600;color:var(--navy);
  border-radius:4px 4px 0 0;transition:.15s;
}
.gap-input:focus{outline:none;border-bottom-color:var(--accent);background:var(--accent-soft)}
.gap-input.filled{background:#f0f7ff;border-bottom-color:var(--blue)}
.opts{display:flex;flex-direction:column;gap:6px;margin:8px 0 4px}
.opt-row{
  display:flex;gap:10px;align-items:flex-start;border:1px solid var(--line);background:#fff;
  border-radius:8px;padding:8px 12px;font-size:14px;line-height:1.6;text-align:left;transition:.13s;
}
.opt-row:hover{border-color:var(--line-2);background:#fafbfc}
.opt-row .letter{
  font-weight:700;color:var(--ink-2);flex:0 0 auto;width:16px;
}
.opt-row.on{border-color:var(--navy);background:#eff4fb;box-shadow:inset 0 0 0 1px var(--navy)}
.opt-row.on .letter{color:var(--navy)}
.pills{display:flex;gap:7px;flex-wrap:wrap;margin-top:7px}
.pill{
  border:1px solid var(--line-2);background:#fff;border-radius:7px;padding:6px 14px;font-size:13px;
  font-weight:600;letter-spacing:.3px;color:var(--ink-2);transition:.13s;
}
.pill:hover{border-color:var(--ink-2)}
.pill.on{background:var(--navy);border-color:var(--navy);color:#fff}
.q-select{
  border:1px solid var(--line-2);border-radius:7px;padding:5px 9px;font-size:13.5px;background:#fff;
  min-width:130px;color:var(--ink);font-weight:500;
}
.q-select:focus{outline:none;border-color:var(--navy);box-shadow:0 0 0 3px rgba(18,38,63,.08)}
.optbank{
  display:grid;grid-template-columns:1fr 1fr;gap:5px 16px;background:#f8fafc;border:1px solid var(--line);
  border-radius:8px;padding:12px 14px;margin:4px 0 14px;font-size:13.5px;
}
.optbank div{line-height:1.6}
.optbank b{color:var(--navy);margin-right:6px}
.note-table{width:100%;border-collapse:collapse;font-size:14px;margin:6px 0 14px}
.note-table td,.note-table th{border:1px solid var(--line-2);padding:7px 10px;vertical-align:middle}
.note-table th{background:#f4f6f9;font-size:12.5px;text-align:left;font-weight:700;color:var(--ink-2)}

/* palette + footer */
.palette{
  border-top:1px solid var(--line);background:#fff;padding:9px 16px;display:flex;
  align-items:center;gap:12px;flex-wrap:wrap;min-height:58px;
}
.pal-group{display:flex;align-items:center;gap:5px;flex-wrap:wrap}
.pal-label{font-size:11px;color:var(--muted);letter-spacing:.5px;margin-right:2px;font-weight:600}
.pal-item{
  min-width:27px;height:27px;border-radius:6px;border:1px solid var(--line-2);background:#fff;
  font-size:12px;font-weight:600;color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;
  position:relative;font-variant-numeric:tabular-nums;transition:.12s;padding:0 4px;
}
.pal-item:hover{border-color:var(--navy)}
.pal-item.done{background:#dbe4ee;border-color:#c3cfdd;color:#12263f}
.pal-item.cur{background:var(--navy);border-color:var(--navy);color:#fff;box-shadow:0 0 0 2px rgba(18,38,63,.18)}
.pal-item.flagged:after{
  content:"";position:absolute;top:-2px;right:-2px;width:7px;height:7px;border-radius:50%;
  background:var(--warn);border:1.5px solid #fff;
}
.pal-sep{width:1px;height:20px;background:var(--line);margin:0 6px}
.exam-foot{
  border-top:1px solid var(--line);background:#fff;padding:10px 18px;display:flex;
  align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.foot-left,.foot-right{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.foot-note{font-size:12px;color:var(--muted)}

/* audio bar */
.audiobar{
  display:flex;align-items:center;gap:12px;background:#0f172a;color:#e6edf5;padding:9px 16px;
  font-size:13px;flex-wrap:wrap;
}
.audiobar .waves{display:flex;gap:2.5px;align-items:flex-end;height:16px}
.audiobar .waves i{width:2.5px;background:#38bdf8;border-radius:1px;animation:wave .9s infinite ease-in-out}
.audiobar .waves i:nth-child(1){height:6px;animation-delay:0s}
.audiobar .waves i:nth-child(2){height:12px;animation-delay:.12s}
.audiobar .waves i:nth-child(3){height:16px;animation-delay:.24s}
.audiobar .waves i:nth-child(4){height:9px;animation-delay:.36s}
.audiobar .waves i:nth-child(5){height:13px;animation-delay:.48s}
@keyframes wave{0%,100%{transform:scaleY(.4)}50%{transform:scaleY(1)}}
.audiobar.idle .waves i{animation:none;background:#475569}
.audiobar .abar-btn{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);color:#fff;
  border-radius:6px;padding:3px 10px;font-size:12px;
}
.audiobar .abar-btn:hover{background:rgba(255,255,255,.18)}
.audiobar .abar-btn:disabled{opacity:.4}

/* writing */
.write-pane{display:flex;flex-direction:column;height:100%}
.write-head{padding:18px 26px 12px;border-bottom:1px solid var(--line);background:#fff}
.write-head h3{margin:0 0 4px;font-size:15px}
.write-head p{margin:0;font-size:13px;color:var(--muted)}
.write-body{flex:1;display:flex;min-height:0}
.write-prompt{flex:0 0 40%;border-right:1px solid var(--line);overflow:auto;padding:20px 24px;background:#fcfcfd}
.write-prompt .task-tag{
  display:inline-block;background:var(--navy);color:#fff;font-size:11px;letter-spacing:1px;
  padding:3px 9px;border-radius:4px;margin-bottom:12px;font-weight:700;
}
.write-prompt .prompt-text{font-size:15px;line-height:1.85;color:#1a2433}
.write-prompt .prompt-extra{
  margin-top:16px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:12px 14px;
  font-size:13px;line-height:1.8;color:var(--ink-2);
}
.write-prompt .prompt-extra b{display:block;margin-bottom:4px;font-size:12px;letter-spacing:.4px;color:var(--muted)}
.chart-box{margin:14px 0;border:1px solid var(--line);border-radius:8px;padding:8px;background:#fff}
.write-editor{flex:1;display:flex;flex-direction:column;min-width:0}
.write-editor textarea{
  flex:1;border:none;resize:none;padding:22px 26px;font-size:15.5px;line-height:1.9;
  font-family:var(--sans);outline:none;color:var(--ink);background:#fff;
}
.write-editor textarea::placeholder{color:#b0b8c4}
.write-status{
  border-top:1px solid var(--line);padding:7px 22px;display:flex;justify-content:space-between;
  font-size:12.5px;color:var(--muted);background:#fbfcfd;align-items:center;
}
.write-status b{font-variant-numeric:tabular-nums;color:var(--ink-2)}
.wc-ok{color:var(--ok)}

/* ---------- results ---------- */
.result-head{
  background:linear-gradient(120deg,#0f1e30,#1d3b5c);color:#fff;border-radius:16px;
  padding:28px 32px;margin-bottom:22px;
}
.result-head .rh-top{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;flex-wrap:wrap}
.result-head h1{margin:0 0 6px;font-size:22px;font-weight:650}
.result-head .sub{color:#a9bcd0;font-size:13px}
.band-big{text-align:center;min-width:130px}
.band-big .num{font-size:52px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-2px}
.band-big .lbl{font-size:11px;letter-spacing:2px;color:#a9bcd0;margin-top:6px;text-transform:uppercase}
.band-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:22px}
.band-cell{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:12px 14px}
.band-cell .k{font-size:11px;color:#a9bcd0;letter-spacing:.6px;margin-bottom:3px}
.band-cell .v{font-size:24px;font-weight:650;font-variant-numeric:tabular-nums;line-height:1.2}
.band-cell .r{font-size:11.5px;color:#8fa5bb}

.res-tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:20px;flex-wrap:wrap}
.res-tab{
  border:none;background:none;padding:10px 16px;font-size:14px;color:var(--muted);
  border-bottom:2px solid transparent;margin-bottom:-1px;font-weight:500;
}
.res-tab.on{color:var(--ink);border-bottom-color:var(--accent);font-weight:650}
.res-tab .cnt{font-size:11.5px;color:var(--muted);margin-left:5px}

.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 22px;margin-bottom:16px}
.card h3{margin:0 0 4px;font-size:15.5px;display:flex;align-items:center;gap:9px}
.card .card-sub{font-size:12.5px;color:var(--muted);margin-bottom:14px}

.rev-item{border:1px solid var(--line);border-radius:10px;margin-bottom:10px;overflow:hidden;background:#fff}
.rev-item.ok{border-left:3px solid var(--ok)}
.rev-item.no{border-left:3px solid var(--bad)}
.rev-item.skip{border-left:3px solid var(--line-2)}
.rev-head{display:flex;gap:12px;padding:12px 15px;align-items:flex-start}
.rev-head .qn{
  flex:0 0 auto;width:28px;height:28px;border-radius:7px;display:flex;align-items:center;justify-content:center;
  font-size:12.5px;font-weight:700;
}
.rev-item.ok .qn{background:var(--ok-bg);color:var(--ok)}
.rev-item.no .qn{background:var(--bad-bg);color:var(--bad)}
.rev-item.skip .qn{background:#f2f4f7;color:var(--muted)}
.rev-q{flex:1;min-width:0;font-size:14px;line-height:1.7}
.rev-ans{display:flex;gap:18px;flex-wrap:wrap;margin-top:7px;font-size:13px}
.rev-ans span{display:inline-flex;gap:6px;align-items:baseline}
.rev-ans .k{color:var(--muted);font-size:12px}
.rev-ans .v{font-weight:600;color:var(--ink)}
.rev-ans .v.bad{color:var(--bad);text-decoration:line-through;text-decoration-color:rgba(180,35,24,.4)}
.rev-ans .v.ok{color:var(--ok)}
.rev-exp{padding:0 15px 13px 55px;font-size:13px;color:var(--ink-2);line-height:1.8}
.rev-exp .kpt{
  display:inline-block;background:var(--blue-bg);color:var(--blue);font-size:11px;padding:2px 8px;
  border-radius:4px;margin-right:7px;font-weight:600;
}
.rev-exp .why{display:block;margin-top:5px;color:var(--muted);font-size:12.5px}
.rev-tools{padding:0 15px 12px 55px;display:flex;gap:8px;flex-wrap:wrap}
.mini-btn{
  font-size:12px;border:1px solid var(--line-2);background:#fff;border-radius:6px;padding:3px 9px;color:var(--ink-2);
}
.mini-btn:hover{background:#f9fafb}

/* writing review */
.wgrid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px;align-items:start}
.crit-row{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);align-items:flex-start}
.crit-row:last-child{border:none}
.crit-b{flex:0 0 46px;text-align:center}
.crit-b .n{font-size:20px;font-weight:700;font-variant-numeric:tabular-nums}
.crit-b .l{font-size:10px;color:var(--muted);letter-spacing:.5px}
.crit-row .txt{font-size:13px;line-height:1.7;color:var(--ink-2)}
.crit-row .txt b{display:block;font-size:13.5px;color:var(--ink);margin-bottom:2px}
.model-essay{font-family:var(--serif);font-size:15.5px;line-height:1.95;color:#1a2433;white-space:pre-wrap}
.model-essay .hl{background:#fff3c4;border-radius:2px;padding:0 1px}
.essay-meta{display:flex;gap:14px;font-size:12px;color:var(--muted);margin-bottom:12px;flex-wrap:wrap}
.mistake-line{background:var(--bad-bg);color:#912018;padding:1px 3px;border-radius:3px}

/* ---------- drawer / vocab ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:420px;max-width:92vw;background:#fff;z-index:150;
  box-shadow:-8px 0 40px rgba(16,24,40,.16);display:flex;flex-direction:column;
  animation:slideIn .22s ease;
}
@keyframes slideIn{from{transform:translateX(30px);opacity:.6}to{transform:none;opacity:1}}
.drawer-head{padding:18px 20px 14px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}
.drawer-head h3{margin:0;font-size:16px;display:flex;align-items:center;gap:8px}
.drawer-head .cnt{font-size:12px;background:#f2f4f7;color:var(--ink-2);padding:1px 8px;border-radius:999px}
.drawer-body{flex:1;overflow:auto;padding:14px 18px}
.drawer-foot{border-top:1px solid var(--line);padding:10px 18px;display:flex;gap:8px;justify-content:space-between}
.vocab-item{border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-bottom:9px;position:relative}
.vocab-item .vw{font-size:15.5px;font-weight:650;color:var(--navy);margin-right:8px}
.vocab-item .vp{font-size:12.5px;color:var(--teal);font-family:var(--serif)}
.vocab-item .vd{font-size:13px;color:var(--ink-2);margin-top:5px;line-height:1.65}
.vocab-item .ve{font-size:12.5px;color:var(--muted);font-style:italic;margin-top:4px;line-height:1.6}
.vocab-item .vsrc{font-size:11px;color:#98a2b3;margin-top:6px}
.vocab-item .del{
  position:absolute;right:8px;top:8px;border:none;background:none;color:#b0b8c4;font-size:15px;
  line-height:1;padding:2px 5px;border-radius:4px;
}
.vocab-item .del:hover{background:var(--bad-bg);color:var(--bad)}
.empty{padding:40px 20px;text-align:center;color:var(--muted);font-size:13.5px;line-height:1.8}

/* ---------- context menu ---------- */
.ctxmenu{
  position:fixed;z-index:300;background:#fff;border:1px solid var(--line);border-radius:10px;
  box-shadow:var(--shadow-m);padding:5px;min-width:196px;animation:pop .12s ease;
}
.ctxmenu button{
  display:flex;width:100%;align-items:center;gap:9px;border:none;background:none;text-align:left;
  padding:8px 10px;border-radius:6px;font-size:13.5px;color:var(--ink-2);
}
.ctxmenu button:hover{background:#f2f4f7;color:var(--ink)}
.ctxmenu button .ic{width:16px;text-align:center;opacity:.7;font-size:12px}
.ctxmenu .sep{height:1px;background:var(--line);margin:4px 6px}
.ctxmenu .head{padding:6px 10px 4px;font-size:11px;color:var(--muted);letter-spacing:.5px;max-width:260px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- dictionary popover ---------- */
.dict-card{position:fixed;z-index:290;width:340px;background:#fff;border:1px solid var(--line);
  border-radius:12px;box-shadow:var(--shadow-m);padding:16px 18px;font-size:13.5px;
  animation:pop .15s ease;max-height:70vh;overflow:auto}
.dict-card .dw{font-size:20px;font-weight:650;color:var(--navy);letter-spacing:-.2px}
.dict-card .dp{font-family:var(--serif);color:var(--teal);font-size:13px;margin:2px 0 8px}
.dict-card .dpos{font-size:11.5px;color:var(--muted);letter-spacing:.4px;text-transform:uppercase;margin:10px 0 4px;font-weight:700}
.dict-card .ddef{margin:0 0 6px;line-height:1.65;color:var(--ink-2)}
.dict-card .dex{color:var(--muted);font-style:italic;line-height:1.6;margin:3px 0 0;font-size:12.5px}
.dict-card .dnotice{background:var(--warn-bg);color:#93370d;font-size:12px;padding:7px 9px;border-radius:6px;margin-top:10px;line-height:1.6}
.dict-card .dhead{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.dict-card .close{border:none;background:none;color:#b0b8c4;font-size:16px;line-height:1;padding:0 2px}

/* ---------- toast ---------- */
.toast{
  position:fixed;bottom:30px;left:50%;transform:translateX(-50%);background:#101828;color:#fff;
  padding:10px 20px;border-radius:999px;font-size:13.5px;z-index:400;box-shadow:var(--shadow-m);
  animation:toastIn .2s ease;max-width:88vw;text-align:center;
}
@keyframes toastIn{from{transform:translate(-50%,10px);opacity:0}to{transform:translate(-50%,0);opacity:1}}

/* ---------- misc ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.kv{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px dashed var(--line);font-size:13.5px}
.kv:last-child{border:none}
.kv .k{color:var(--muted)}
.kv .v{font-weight:600}
.legend{display:flex;gap:14px;font-size:11.5px;color:var(--muted);flex-wrap:wrap;align-items:center}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:4px;vertical-align:-1px}
.hist-row{
  display:flex;align-items:center;gap:14px;padding:13px 16px;border:1px solid var(--line);border-radius:10px;
  margin-bottom:9px;background:#fff;transition:.14s;
}
.hist-row:hover{border-color:#c3ccd8;box-shadow:var(--shadow-s)}
.hist-row .hd{flex:1;min-width:0}
.hist-row .hd b{font-size:14px;display:block;font-weight:600}
.hist-row .hd span{font-size:12px;color:var(--muted)}
.hist-row .hs{font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.5px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

@media (max-width:900px){
  .pane.passage{flex:0 0 auto;position:absolute;inset:0;z-index:8;display:none}
  .pane.passage.mobile-show{display:block}
  .splitter{display:none}
  .wgrid,.two-col{grid-template-columns:1fr}
  .band-row{grid-template-columns:repeat(2,1fr)}
  .write-body{flex-direction:column}
  .write-prompt{flex:0 0 auto;max-height:40vh}
  .hero{padding:24px}
  .hero h1{font-size:23px}
}

/* ---------- 细节补齐 ---------- */
.q-row{position:relative}
.q-flag{
  border:none;background:none;color:#cbd5e1;font-size:13px;line-height:1;padding:4px 5px;
  border-radius:5px;opacity:0;transition:.15s;align-self:flex-start;
}
.q-row:hover .q-flag{opacity:1}
.q-flag:hover{color:var(--warn);background:var(--warn-bg)}
.q-row.flag .q-flag{opacity:1;color:var(--warn)}
.rv-gap{color:var(--navy);border-bottom:1.5px solid var(--navy);padding:0 5px;font-weight:600}
.noans{color:#98a2b3;font-style:italic;font-weight:400}
.q-note-wrap{margin:16px 0}
.q-note-wrap table{margin:0}
.rev-pick{font-size:13px;background:#f7f9fc;border:1px solid var(--line);border-radius:6px;padding:5px 10px;display:inline-block;margin-top:4px}
.hl{background:#fff3c4;border-radius:2px;padding:0 1px}
.chart-box svg{display:block;margin:0 auto}
.paper-card .foot .btn{padding:5px 14px;font-size:13px}
.eyebrow{font-size:11px;letter-spacing:2px;text-transform:uppercase;color:#ffb4b8;font-weight:700}
.gap-n{display:inline-block;min-width:20px;height:20px;line-height:20px;text-align:center;background:var(--navy);color:#fff;border-radius:5px;font-size:11.5px;font-family:var(--sans);margin-right:4px;vertical-align:1px;font-weight:600}
.gap-input.inline{width:150px;min-width:90px}
.inline-gap{border-bottom:1.5px solid var(--navy);padding:0 6px;font-weight:600;color:var(--navy);background:#f4f8fd;border-radius:3px 3px 0 0}
.inline-gap.ok{color:var(--ok);border-bottom-color:var(--ok);background:var(--ok-bg)}
.inline-gap.bad{color:var(--bad);border-bottom-color:var(--bad);background:var(--bad-bg)}

/* ---------- 备份与云同步 ---------- */
.pro-tag{display:inline-block;font-style:normal;font-size:10.5px;font-weight:600;letter-spacing:.5px;
  padding:1px 5px;border-radius:5px;background:var(--warn-bg);color:var(--warn);
  border:1px solid #fedf89;vertical-align:1px}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:2px 0 4px}
.stat-grid > div{background:#f8fafc;border:1px solid var(--line);border-radius:9px;padding:9px 12px}
.stat-grid span{display:block;font-size:11.5px;color:var(--muted);margin-bottom:1px}
.stat-grid b{font-size:17px;font-variant-numeric:tabular-nums;letter-spacing:-.3px}
.panel-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:12px}
.form-label{font-size:12.5px;color:var(--muted);margin:16px 0 6px}
.form-row{display:flex;gap:8px}
.text-in{flex:1;min-width:0;border:1px solid var(--line-2);border-radius:8px;background:#fff;
  padding:9px 12px;font-size:14px;color:var(--ink);transition:.15s}
.text-in:focus{outline:none;border-color:var(--navy);box-shadow:0 0 0 3px rgba(18,38,63,.08)}
.text-in.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:1.2px;font-size:13.5px}
.text-in::placeholder{letter-spacing:0;font-family:var(--sans);color:#98a2b3}
.form-msg{font-size:12.5px;color:var(--muted);line-height:1.75;margin:10px 0 0}
.form-msg.ok{color:var(--ok)}
.form-msg.err{color:var(--bad)}
.divider{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px;margin:18px 0 0}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.pro-hero{background:#fffcf5;border:1px solid #f3e5c8;border-radius:10px;padding:12px 14px;margin-bottom:4px}
.pro-hero b{font-size:13.5px;display:block;margin-bottom:3px}
.pro-hero p{margin:0;font-size:12.5px;color:var(--ink-2);line-height:1.75}
.panel-note{margin-top:18px;padding:11px 13px;background:#f8fafc;border:1px solid var(--line);
  border-radius:9px;font-size:12.5px;color:var(--ink-2);line-height:1.8}
.panel-note b{color:var(--ink)}
.code-box{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:16px;letter-spacing:1.5px;
  text-align:center;padding:15px 12px;background:#f8fafc;border:1px dashed var(--line-2);
  border-radius:10px;word-break:break-all;color:var(--navy);user-select:all}
@media (max-width:640px){
  .stat-grid{grid-template-columns:1fr 1fr}
  .form-row{flex-direction:column}
  .form-row .btn{justify-content:center}
}

/* ==========================================================
   品牌 · 题库分区 · 移动端适配
   ========================================================== */

/* ---------- 品牌字标 ---------- */
.brand{gap:8px}
.brand .logo{display:flex;align-items:baseline;gap:7px;font-family:var(--sans)}
.brand .logo .n1{font-family:var(--sans);font-style:normal;font-weight:700;font-size:22px;
  letter-spacing:-.7px;color:var(--accent);line-height:1}
.brand .logo .n2{font-family:var(--sans);font-weight:700;font-size:11.5px;letter-spacing:2.6px;
  color:var(--navy);text-transform:uppercase;line-height:1}

/* ---------- hero 与形象 ---------- */
.hero{display:flex;align-items:center;gap:36px;padding:34px 38px}
.hero-copy{flex:1;min-width:0}
.hero-art{
  flex:0 0 188px;width:188px;height:188px;border-radius:50%;
  background:radial-gradient(circle at 50% 40%,#fdfaf2 0%,#f6f1e4 100%);
  display:flex;align-items:center;justify-content:center;padding:10px;
  box-shadow:0 16px 44px rgba(0,0,0,.28),inset 0 0 0 1px rgba(255,255,255,.75);
  position:relative;z-index:1;
}
.hero-art img{width:100%;height:100%;object-fit:contain;display:block}
.hero-art:after{
  content:"";position:absolute;inset:-14px;border-radius:50%;
  border:1px dashed rgba(255,255,255,.18);
}

/* ---------- 题库分区标签 ---------- */
.bank-tabs{display:inline-flex;gap:4px;background:#e9edf2;border-radius:11px;padding:4px;margin:0 0 18px}
.bank-tab{border:none;background:transparent;padding:8px 18px;border-radius:8px;font-size:13.5px;
  color:var(--ink-2);font-weight:500;transition:.15s;white-space:nowrap}
.bank-tab:hover{color:var(--ink)}
.bank-tab.on{background:#fff;color:var(--ink);font-weight:650;box-shadow:0 1px 3px rgba(16,24,40,.12)}
.bank-tab .n{font-size:11.5px;color:var(--muted);margin-left:5px;font-weight:500}

/* ---------- 按周收纳 ---------- */
.week{background:#fff;border:1px solid var(--line);border-radius:13px;margin-bottom:11px;overflow:hidden;transition:.15s}
.week:hover{border-color:#c9d2de}
.week-head{display:flex;align-items:center;gap:12px;padding:13px 16px;cursor:pointer;user-select:none}
.week-chev{width:16px;flex:0 0 16px;color:#98a2b3;font-size:11px;transition:transform .18s;text-align:center}
.week.open .week-chev{transform:rotate(90deg);color:var(--ink-2)}
.week-title{font-size:14px;font-weight:650;letter-spacing:-.1px;line-height:1.4}
.week-title .tag{margin-left:7px;font-weight:500}
.week-range{font-size:12px;color:var(--muted);margin-top:1px}
.week-count{font-size:12px;color:var(--muted);flex-shrink:0;margin-left:auto}
.week-dots{display:flex;gap:4px;flex-shrink:0}
.week-dots i{width:7px;height:7px;border-radius:2px;background:#e4e7ec;display:block}
.week-dots i.has{background:var(--accent)}
.week-body{display:none;padding:2px 12px 12px}
.week.open .week-body{display:block}
.week-body .update-item{margin-bottom:8px}
.week-body .update-item:last-child{margin-bottom:0}
.week.is-now{border-color:#e8c9cb;background:linear-gradient(180deg,#fffdfd,#fff)}

/* ---------- 页脚 ---------- */
.site-foot{max-width:1180px;margin:56px auto 0;padding:26px 20px 46px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;font-size:12px;color:#98a2b3}
.sf-maker{display:flex;align-items:center;gap:10px}
.sf-maker img{width:34px;height:34px;object-fit:contain;border-radius:9px}
.sf-maker b{display:block;font-size:12.5px;color:var(--ink-2);font-weight:600;line-height:1.4}
.sf-maker span{font-size:11.5px;color:#98a2b3;line-height:1.4}
.sf-tech{display:flex;align-items:center;gap:8px;margin-left:auto}
.sf-tech img{height:19px;width:auto;opacity:.55;display:block}
.sf-tech span{font-size:11px;letter-spacing:.3px}
.sf-copy{width:100%;font-size:11px;color:#b0b8c4;line-height:1.7;border-top:1px dashed var(--line);padding-top:14px;margin-top:2px}
.sf-copy a{color:#98a2b3}

/* ---------- PRO 徽标（深蓝虎鲸） ---------- */
.pro-badge{display:inline-flex;align-items:center;gap:4px;font-style:normal;font-size:10.5px;font-weight:700;
  letter-spacing:.5px;color:#1e3a8a;background:#edf1fb;border:1px solid #ccd8f0;
  padding:1.5px 7px 1.5px 3px;border-radius:6px;vertical-align:1px}
.pro-badge img{width:14px;height:auto;display:block}
.pro-inline{display:inline-flex;align-items:center;gap:5px}
.pro-inline img{width:16px;height:auto}

/* ---------- 选中文字浮动条（触屏无右键） ---------- */
.sel-bar{
  position:fixed;z-index:295;background:#12263f;border-radius:10px;padding:3px;
  display:flex;gap:1px;box-shadow:0 10px 30px rgba(16,24,40,.35);animation:pop .12s ease;
}
.sel-bar button{border:none;background:transparent;color:#fff;font-size:12.5px;padding:7px 11px;
  border-radius:7px;white-space:nowrap}
.sel-bar button:active{background:rgba(255,255,255,.16)}
.sel-bar .sb-x{color:#94a3b8;padding:7px 8px}

/* ---------- 生词本工具条 ---------- */
.vocab-tools{display:flex;gap:8px;padding:10px 18px;border-bottom:1px solid var(--line);align-items:center;flex-wrap:wrap}
.vocab-search{flex:1;min-width:120px;border:1px solid var(--line-2);border-radius:8px;
  padding:7px 11px;font-size:13px;background:#fff;color:var(--ink)}
.vocab-search:focus{outline:none;border-color:var(--navy);box-shadow:0 0 0 3px rgba(18,38,63,.07)}
.vocab-sort{border:1px solid var(--line-2);border-radius:8px;background:#fff;padding:7px 8px;font-size:12.5px;color:var(--ink-2)}
.vocab-more{padding:6px 0 16px;text-align:center}
.vocab-item .vmore{margin-top:7px;display:flex;gap:6px;flex-wrap:wrap}
.drawer-head .dh-actions{display:flex;align-items:center;gap:8px}

/* ---------- 答题卡折叠 ---------- */
.pal-toggle{
  display:none;border:1px solid var(--line-2);background:#fff;color:var(--ink-2);
  border-radius:7px;padding:5px 11px;font-size:12.5px;font-weight:600;flex-shrink:0;
}
.pal-toggle .pc{color:var(--accent);font-variant-numeric:tabular-nums}

/* ---------- 通用窄屏 ---------- */
@media (max-width:900px){
  .hero{padding:24px;display:block}
  .hero-art{position:absolute;right:16px;top:16px;width:94px;height:94px;flex:none;padding:6px}
  .hero-art:after{display:none}
  .hero-copy h1{padding-right:96px;font-size:22px}
  .hero p{font-size:13.5px}
  .hero-stats{gap:20px;row-gap:14px;margin-top:20px}
  .hero-stats div b{font-size:18px}
}
@media (max-width:820px){
  .topbar{height:54px;padding:0 12px;gap:7px}
  .brand .sub{display:none}
  .brand .logo .n1{font-size:19px}
  .brand .logo .n2{font-size:10px;letter-spacing:1.8px}
  .topbar .btn.sm{padding:6px 9px;font-size:12.5px}
  .hide-sm{display:none !important}
  .wrap{padding:18px 14px 60px}
  .site-foot{margin-top:38px;padding:20px 14px 34px;gap:14px}
  .sf-tech{margin-left:0;width:100%;justify-content:flex-start}
  .monthly-only{}
  .bank-tabs{width:100%}
  .bank-tab{flex:1;text-align:center;padding:8px 10px;font-size:13px}
}
@media (max-width:640px){
  .drawer{width:100%;max-width:100%}
  .drawer-body{padding:12px 12px 76px}
  .drawer-head{padding:14px 14px 12px}
  .drawer-foot{padding:9px 12px calc(9px + env(safe-area-inset-bottom))}
  .vocab-tools{padding:9px 12px}
  .dict-card{left:10px !important;right:10px !important;width:auto !important;
    top:auto !important;bottom:calc(10px + env(safe-area-inset-bottom)) !important;
    max-height:62vh;border-radius:14px}
  .modal{max-height:92dvh;border-radius:14px}
  .modal-head{padding:18px 18px 0}
  .modal-body{padding:14px 18px 4px}
  .modal-foot{padding:14px 18px min(18px,calc(14px + env(safe-area-inset-bottom)))}
  .mask{padding:12px;align-items:flex-end}
  .paper-grid{grid-template-columns:1fr}
  .section-title{margin:26px 0 12px}
  .section-title h2{font-size:16px}
  .section-title .hint{display:none}
  .toast{bottom:calc(18px + env(safe-area-inset-bottom));font-size:13px;padding:9px 16px}
  .ctxmenu{min-width:184px}
  .band-big .num{font-size:44px}
  .result-head{padding:20px}
  .hist-row{gap:10px;padding:11px 12px}
  .hist-row .hs{font-size:19px}
  .hist-row .btn.sm{display:none}
  .week-head{gap:9px;padding:11px 12px}
  .week-title{font-size:13.5px}
  .week-dots{display:none}
  .week-body{padding:2px 9px 9px}
  .sf-maker img{width:30px;height:30px}
}

/* ---------- 考试界面：高度与答题卡 ---------- */
.exam-wrap{height:calc(100vh - 58px);height:calc(100dvh - 58px)}
.pal-arrow{display:inline-block;transition:transform .18s;font-size:10px;color:#98a2b3}

@media (max-width:820px){
  .exam-wrap{height:calc(100dvh - 54px)}
  .pal-toggle{display:inline-flex;align-items:center;gap:6px}
  .palette{padding:7px 11px;min-height:0;gap:8px}
  .palette:not(.open){flex-wrap:nowrap;overflow:hidden}
  .palette:not(.open) .pal-group,
  .palette:not(.open) .pal-sep,
  .palette:not(.open) .legend{display:none}
  .palette.open{max-height:38dvh;overflow-y:auto;align-items:flex-start}
  .palette.open .pal-toggle{width:100%;justify-content:space-between;margin-bottom:3px}
  .palette.open .pal-arrow{transform:rotate(180deg)}
  .pal-group{gap:4px}
  .pal-item{min-width:30px;height:30px;font-size:12.5px}
  .pal-sep{margin:0 3px}
  .exam-foot{padding:8px 12px;gap:8px}
  .foot-left,.foot-right{gap:6px}
  .foot-note{display:none}
  .audiobar{padding:7px 12px;font-size:12.5px;gap:8px}
  .pane-inner{padding:16px 14px 72px}
  .passage h2{font-size:18px}
  .q-row{gap:8px;padding:8px 6px}
  .q-text{font-size:14px}
  .gap-input{width:120px;min-width:90px;font-size:16px}
  .opt-row{padding:9px 10px;font-size:13.5px}
  .optbank{grid-template-columns:1fr;font-size:13px}
  .note-table{font-size:13px}
  .write-prompt{padding:14px 16px;max-height:34vh}
  .write-editor textarea{padding:14px 16px;font-size:15px}
  .write-head{padding:12px 16px 10px}
  .write-status{padding:6px 14px;font-size:12px}
  .result-head .rh-top{gap:12px}
  .res-tabs{gap:2px}
  .res-tab{padding:9px 12px;font-size:13px}
  .rev-exp{padding:0 12px 12px 12px}
  .rev-tools{padding:0 12px 12px 12px}
  .wgrid{grid-template-columns:1fr}
  .crit-b{flex:0 0 40px}
}

@media (max-width:900px){
  .hero .kicker{font-size:10px;letter-spacing:1.1px;line-height:1.6;padding-right:90px}
  .hero-copy h1{font-size:21px;line-height:1.35}
}

@media (min-width:901px){
  .hero-art{flex:0 0 208px;width:208px;height:208px}
  .hero{padding:36px 44px}
  .hero-copy{max-width:760px}
}

@media (max-width:900px){
  .hero .kicker .ext{display:none}
}

@media (max-width:720px){
  .date-group{grid-template-columns:46px 1fr;gap:8px}
  .date-rail b{font-size:15px}
  .date-rail span{font-size:11px}
  .update-item{padding:12px 12px}
  .update-item h3{font-size:14px}
}

@media (max-width:900px){
  .hero-art{width:82px;height:82px;right:14px;top:14px;padding:5px}
  .hero-copy h1{padding-right:92px;margin-bottom:8px}
  .hero .kicker{padding-right:92px;margin-bottom:8px}
  .hero p{padding-right:0;margin-top:2px}
  .hero-stats{margin-top:16px;gap:18px}
  .hero-actions{margin-top:18px}
  .hero-actions .btn.lg{padding:10px 20px;font-size:14px}
}

/* ---------- 考试顶栏 ---------- */
.tb-sec{min-width:0;overflow:hidden}
@media (max-width:900px){
  .tb-exam-brand{display:none}
  .tb-sec{gap:7px;font-size:12px}
  .tb-sec .tb-chip{font-size:11px;padding:2px 8px;letter-spacing:.3px}
  .tb-sec .exam-title{display:none}
  .timer{font-size:15px;padding:5px 11px;gap:6px}
  .topbar .icon-btn{width:31px;height:31px;font-size:12px}
}
@media (max-width:420px){
  .tb-sec > span:first-child{max-width:76px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
}

/* ---------- 页脚微调 ---------- */
.sf-tech img{height:26px;opacity:.6}
.sf-tech{gap:10px}
.sf-tech span{opacity:.75}
.sf-maker img{width:38px;height:38px}
@media (max-width:820px){
  .wrap{padding-bottom:26px}
  .site-foot{margin-top:30px}
  .sf-tech img{height:23px}
}

.pro-badge{padding:2px 8px 2px 4px;font-size:11px;gap:5px}
.pro-badge img{width:16px}