/* ============ 软考刷题站 · 样式 ============ */
:root{
  --bg:#f5f5f2;
  --panel:#ffffff;
  --ink:#1a1d21;
  --ink2:#4a5158;
  --muted:#7c848c;
  --line:#e4e4df;
  --line2:#eeeeea;
  --accent:#2f6f4e;
  --accent-soft:#eaf3ee;
  --ok:#1f8a4c;
  --ok-soft:#e8f5ed;
  --bad:#c94141;
  --bad-soft:#fbecec;
  --warn:#a8741a;
  --radius:12px;
  --shadow:0 1px 2px rgba(20,25,30,.05), 0 6px 20px -12px rgba(20,25,30,.18);
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:15px;line-height:1.65;
  padding-bottom:60px;
}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3{line-height:1.35}
.muted{color:var(--muted);font-size:13.5px}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:18px;
  padding:10px 22px;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:10px}
.logo{
  background:var(--accent);color:#fff;font-weight:700;font-size:13px;
  padding:5px 9px;border-radius:8px;letter-spacing:.5px;
}
.brand-txt{display:flex;flex-direction:column;line-height:1.25}
.brand-txt b{font-size:14.5px}
.brand-txt span{font-size:11.5px;color:var(--muted)}
.tabs{display:flex;gap:4px;flex-wrap:wrap;flex:1}
.tab{
  padding:6px 13px;border-radius:999px;font-size:13.5px;color:var(--ink2);
  transition:background .15s,color .15s;
}
.tab:hover{background:var(--line2)}
.tab.active{background:var(--accent);color:#fff;font-weight:600}
.countdown{
  font-size:13px;font-weight:600;color:var(--accent);white-space:nowrap;
  background:var(--accent-soft);padding:6px 12px;border-radius:999px;
}
.countdown.urgent{color:#fff;background:var(--bad)}

/* ---------- 布局 ---------- */
main{max-width:1000px;margin:0 auto;padding:22px 18px}
.view{display:none}
.view.active{display:block;animation:fade .18s ease}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}

.hero{margin-bottom:18px}
.hero h1{font-size:22px;letter-spacing:-.2px}
.hero-sub{color:var(--muted);font-size:13.5px;margin-top:4px}
.hero-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:10px;margin-top:16px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px}
.stat b{display:block;font-size:20px;line-height:1.2}
.stat span{font-size:12px;color:var(--muted)}

.panel{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;margin-bottom:16px;box-shadow:var(--shadow);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.panel-head h2{font-size:16.5px}

/* ---------- 按钮 ---------- */
.primary{
  background:var(--accent);color:#fff;font-weight:600;padding:9px 18px;border-radius:9px;
  transition:filter .15s;
}
.primary:hover{filter:brightness(1.08)}
.primary.big{padding:12px 26px;font-size:15.5px;margin-top:14px}
.ghost{
  border:1px solid var(--line);border-radius:9px;padding:7px 13px;font-size:13.5px;
  color:var(--ink2);background:#fff;transition:border-color .15s,color .15s;
}
.ghost:hover{border-color:var(--accent);color:var(--accent)}
.ghost.danger:hover{border-color:var(--bad);color:var(--bad)}
.ghost:disabled{opacity:.4;cursor:not-allowed}

/* ---------- 今日任务 ---------- */
.day-nav{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted)}
.task-list{display:flex;flex-direction:column;gap:10px}
.task{
  display:flex;align-items:center;gap:12px;padding:13px 15px;border:1px solid var(--line);
  border-radius:10px;background:#fdfdfc;transition:border-color .15s;
}
.task:hover{border-color:#cfd4cf}
.task.done{opacity:.62;background:var(--ok-soft);border-color:#c6e3d2}
.task .tick{
  width:22px;height:22px;border-radius:6px;border:1.5px solid #c3c9c3;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;font-size:13px;color:#fff;
}
.task.done .tick{background:var(--ok);border-color:var(--ok)}
.task-body{flex:1;min-width:0}
.task-body b{font-weight:600;font-size:14.5px}
.task-body .task-meta{font-size:12.5px;color:var(--muted);margin-top:2px}
.plan-map{display:grid;grid-template-columns:repeat(auto-fill,minmax(46px,1fr));gap:7px}
.plan-cell{
  border:1px solid var(--line);border-radius:8px;padding:7px 0;text-align:center;
  font-size:12px;color:var(--ink2);background:#fdfdfc;
}
.plan-cell.done{background:var(--ok);border-color:var(--ok);color:#fff;font-weight:600}
.plan-cell.today{outline:2px solid var(--accent);outline-offset:1px;font-weight:700;color:var(--accent)}
.plan-cell.done.today{color:#fff}

/* ---------- 分类刷题 ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.topic-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:15px 16px;text-align:left;box-shadow:var(--shadow);transition:border-color .15s,transform .12s;
}
.topic-card:hover{border-color:var(--accent);transform:translateY(-2px)}
.topic-card .tc-name{font-size:15px;font-weight:600;display:block;margin-bottom:8px}
.topic-card .tc-meta{font-size:12.5px;color:var(--muted);display:flex;justify-content:space-between;gap:8px}
.tc-bar{height:5px;border-radius:3px;background:var(--line2);margin:10px 0 8px;overflow:hidden}
.tc-bar i{display:block;height:100%;background:var(--accent);border-radius:3px}
.tc-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:2px}
.tc-head .tc-name{margin-bottom:0}
.tc-score{font-size:12px;font-weight:700;color:var(--accent);background:var(--accent-soft);padding:2px 8px;border-radius:999px;white-space:nowrap}
.tc-stars{color:var(--warn);font-size:12px;letter-spacing:2px}
.tc-desc{font-size:12px;color:var(--muted);margin-top:5px;line-height:1.5}
.tc-actions{display:flex;gap:7px;margin-top:11px;flex-wrap:wrap}
.primary.sm{padding:6px 13px;font-size:12.5px;border-radius:8px}
.ghost.sm{padding:5px 11px;font-size:12.5px;border-radius:8px}
.ghost.arming{border-color:var(--bad);color:var(--bad);background:var(--bad-soft)}
.sr-score{font-size:11px;color:var(--accent);background:var(--accent-soft);padding:1px 6px;border-radius:999px;margin-left:4px}

/* ---------- 数据管理 ---------- */
.storage-overview{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:12px 0}
.so-item{background:var(--bg-soft,#f6f7f9);border:1px solid var(--line);border-radius:8px;padding:8px 10px;display:flex;flex-direction:column;gap:2px}
.so-item span{font-size:11px;color:var(--muted)}
.so-item b{font-size:14px}
.data-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
@media (max-width:720px){.storage-overview{grid-template-columns:repeat(2,1fr)}}

/* ---------- 云端同步 ---------- */
.sync-intro{margin:0 0 10px;font-size:13px;color:var(--muted)}
.sync-form{display:flex;gap:8px;flex-wrap:wrap}
.sync-form input{flex:1 1 180px;min-width:140px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;font-size:13px;background:var(--bg,#fff);color:inherit}
.sync-form input:focus{outline:none;border-color:var(--accent)}
.sync-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.sync-user{font-size:13px;margin-right:auto}
.sync-status{margin:8px 0 0;font-size:12px;color:var(--muted)}
.sync-status.sync-error{color:var(--bad)}

/* ---------- 下午题作答 ---------- */
.pm.hidden-ans .pm-meta{display:none}
.pm-progress{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:12px 16px}
.pm-progress b{font-size:14px;white-space:nowrap}
.pm-progress .tc-bar{margin:0}
.pm .sub.done-sub{border-left-color:var(--ok)}
.sub-badge{font-size:11px;color:var(--ok);background:var(--ok-soft);padding:1px 7px;border-radius:999px;margin-left:6px}
.sq-input{
  width:100%;min-height:88px;margin-top:9px;padding:10px 12px;border:1.5px solid var(--line);
  border-radius:9px;font-family:inherit;font-size:14px;line-height:1.7;resize:vertical;background:#fdfdfc;color:var(--ink);
}
.sq-input:focus{outline:none;border-color:var(--accent);background:#fff}
.sq-actions{display:flex;gap:10px;margin-top:8px;align-items:center;flex-wrap:wrap}
.sq-judge{font-size:12.5px;color:var(--muted);line-height:1.6}
.sq-judge b{color:var(--accent)}
.sq-judge.good b{color:var(--ok)}
.kw-miss{color:var(--bad)}
.sa-foot{display:flex;gap:8px;margin-top:9px;flex-wrap:wrap}

/* ---------- 做题面板 ---------- */
.run-bar{display:flex;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.run-progress{flex:1;min-width:120px;height:7px;background:var(--line2);border-radius:4px;overflow:hidden}
.run-progress-fill{height:100%;width:0;background:var(--accent);border-radius:4px;transition:width .2s}
.run-count,.run-timer{font-size:13px;color:var(--muted);white-space:nowrap}
.run-timer{font-variant-numeric:tabular-nums;font-weight:600}
.run-timer.warn{color:var(--bad)}
.q-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow)}
.q-head{display:flex;align-items:center;gap:9px;margin-bottom:14px;flex-wrap:wrap}
.pill{font-size:11.5px;padding:3px 9px;border-radius:999px;background:var(--line2);color:var(--ink2)}
.pill.topic{background:var(--accent-soft);color:var(--accent);font-weight:600}
.pill.d1{background:#eef7ef;color:#2f8a4e}
.pill.d2{background:#fdf6e7;color:#a8741a}
.pill.d3{background:#fbecec;color:#c94141}
.pill.origin{background:#f0f1f3;color:#6b7280}
.q-stem{font-size:16.5px;line-height:1.8;margin-bottom:18px;white-space:pre-wrap;word-break:break-word}
.q-stem .blank{color:var(--accent);font-weight:700}
.options{display:flex;flex-direction:column;gap:10px}
.opt{
  display:flex;gap:11px;align-items:flex-start;padding:12px 15px;border:1.5px solid var(--line);
  border-radius:10px;background:#fdfdfc;text-align:left;transition:border-color .14s,background .14s;
}
.opt:hover:not(.locked){border-color:var(--accent);background:var(--accent-soft)}
.opt .k{
  flex:0 0 auto;width:24px;height:24px;border-radius:6px;background:var(--line2);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;color:var(--ink2);
}
.opt .v{flex:1;line-height:1.7;word-break:break-word}
.opt.correct{border-color:var(--ok);background:var(--ok-soft)}
.opt.correct .k{background:var(--ok);color:#fff}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.opt.wrong .k{background:var(--bad);color:#fff}
.opt.locked{cursor:default}
.explain{
  margin-top:16px;padding:14px 16px;border-radius:10px;background:#fafaf7;border:1px solid var(--line2);
  font-size:14.5px;line-height:1.75;
}
.explain .ex-head{font-weight:700;margin-bottom:6px;font-size:13.5px}
.explain.right .ex-head{color:var(--ok)}
.explain.wrong .ex-head{color:var(--bad)}
.explain .ex-body{white-space:pre-wrap;word-break:break-word}
.q-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:18px;flex-wrap:wrap}
.q-foot .hint{font-size:12.5px;color:var(--muted)}
.stars{display:flex;gap:3px}
.star-badge{font-size:12px;color:var(--warn)}

/* ---------- 模拟考 ---------- */
.mock-setup h2{font-size:16.5px;margin-bottom:6px}
.opt-line{display:flex;align-items:center;gap:8px;font-size:14px;margin:12px 0 4px;cursor:pointer}
.mock-row{display:flex;justify-content:space-between;gap:10px;padding:10px 0;border-top:1px solid var(--line2);font-size:13.5px}

/* ---------- 下午题 ---------- */
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.chip{padding:7px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:13.5px;color:var(--ink2)}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.chip.on{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.pm{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;margin-bottom:14px;box-shadow:var(--shadow)}
.pm h3{font-size:16.5px;margin-bottom:4px}
.pm .pm-type{font-size:12px;color:var(--accent);font-weight:600;letter-spacing:.4px}
.pm .scenario{
  margin:14px 0;padding:14px 16px;background:#fafaf7;border:1px solid var(--line2);border-radius:10px;
  font-size:14.5px;line-height:1.8;white-space:pre-wrap;word-break:break-word;
}
.pm .sub{margin:10px 0;padding-left:12px;border-left:3px solid var(--line)}
.pm .sub .sq{font-size:14.5px;line-height:1.75;white-space:pre-wrap;word-break:break-word}
.pm .sub .sa{
  margin-top:7px;font-size:14px;line-height:1.75;white-space:pre-wrap;word-break:break-word;
  background:var(--ok-soft);border-radius:8px;padding:10px 12px;color:#175c33;
}
.pm .sub .sa .lbl{font-weight:700;font-size:12.5px;color:var(--ok);display:block;margin-bottom:3px}
.pm .hidden-ans .sa{display:none}
.pm-meta{margin-top:12px;padding-top:12px;border-top:1px dashed var(--line);font-size:13.5px;line-height:1.75}
.pm-meta b{color:var(--accent)}
.pm-meta .mtxt{white-space:pre-wrap;word-break:break-word;color:var(--ink2)}
.reveal{margin-top:14px}

/* ---------- 速记卡 ---------- */
.cards-bar{display:flex;gap:14px;font-size:13px;color:var(--muted);margin-bottom:12px;flex-wrap:wrap}
.flash-wrap{display:flex;flex-direction:column;align-items:center;gap:14px}
.flash{
  width:100%;max-width:640px;min-height:230px;background:var(--panel);border:1px solid var(--line);
  border-radius:16px;box-shadow:var(--shadow);padding:30px 28px;display:flex;flex-direction:column;
  justify-content:center;text-align:center;cursor:pointer;transition:transform .12s;
}
.flash:active{transform:scale(.99)}
.flash .fc-topic{font-size:12px;color:var(--accent);font-weight:600;letter-spacing:.4px;margin-bottom:14px}
.flash .fc-front{font-size:19px;font-weight:600;line-height:1.7;white-space:pre-wrap;word-break:break-word}
.flash .fc-back{
  font-size:16px;line-height:1.85;white-space:pre-wrap;word-break:break-word;color:var(--ink2);
  text-align:left;margin-top:6px;
}
.flash .fc-flip{font-size:12px;color:var(--muted);position:absolute;bottom:12px;left:0;right:0}
.flash{position:relative;padding-bottom:40px}
.flash-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}

/* ---------- 错题本 / 统计 ---------- */
.wrong-item{padding:14px 0;border-top:1px solid var(--line2)}
.wrong-item:first-child{border-top:0}
.wrong-item .wq{font-size:14.5px;line-height:1.75;white-space:pre-wrap;word-break:break-word}
.wrong-item .wa{margin-top:8px;font-size:13.5px;line-height:1.7}
.wrong-item .wa b{color:var(--ok)}
.wrong-item .we{margin-top:6px;font-size:13.5px;color:var(--ink2);line-height:1.7;white-space:pre-wrap}
.wrong-item .wmeta{font-size:12px;color:var(--muted);margin-top:6px}
.stat-row{display:flex;align-items:center;gap:12px;padding:11px 0;border-top:1px solid var(--line2)}
.stat-row:first-child{border-top:0}
.stat-row .sr-name{flex:0 0 168px;font-size:14px}
.stat-row .sr-bar{flex:1;height:8px;background:var(--line2);border-radius:4px;overflow:hidden}
.stat-row .sr-bar i{display:block;height:100%;background:var(--accent);border-radius:4px}
.stat-row .sr-bar i.low{background:var(--bad)}
.stat-row .sr-num{flex:0 0 auto;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;min-width:96px;text-align:right}
.empty{text-align:center;color:var(--muted);padding:34px 10px;font-size:14px}

/* ---------- toast ---------- */
.toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);opacity:0;pointer-events:none;
  background:#1f2428;color:#fff;padding:10px 18px;border-radius:10px;font-size:13.5px;z-index:60;
  transition:opacity .2s,transform .2s;max-width:90vw;text-align:center;
}
.toast.on{opacity:1;transform:translate(-50%,0)}

/* ---------- 响应式 ---------- */
@media(max-width:720px){
  .topbar{padding:9px 12px;gap:10px}
  .brand-txt span{display:none}
  .tabs{order:3;width:100%;flex:1 0 100%;overflow-x:auto;flex-wrap:nowrap;padding-bottom:2px}
  .tab{white-space:nowrap;padding:6px 11px;font-size:13px}
  main{padding:16px 12px}
  .hero h1{font-size:19px}
  .q-card{padding:17px 16px}
  .q-stem{font-size:15.5px}
  .stat-row .sr-name{flex:0 0 108px;font-size:13px}
  .stat-row .sr-num{min-width:80px;font-size:12px}
  .flash{padding:24px 18px}
  .flash .fc-front{font-size:17px}
  .panel{padding:15px 14px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}