/* ================= 设计变量 ================= */
:root{
  --bg:#F6F2EA;
  --bg-soft:#FBF8F2;
  --card:#FFFDF9;
  --ink:#1D211E;
  --ink-2:#5E665C;
  --ink-3:#8C938A;
  --line:#E7DFD1;
  --line-2:#F0E9DD;
  --accent:#2E6B58;
  --accent-ink:#1F5142;
  --accent-soft:#E5EFE8;
  --warn:#B4553C;
  --warn-soft:#F8E9E3;
  --gold:#C08A2E;
  --gold-soft:#F7EEDB;
  --shadow:0 1px 2px rgba(45,40,30,.05), 0 8px 24px -16px rgba(45,40,30,.25);
  --radius:18px;
  --a1:#4F8A6A; --a2:#40769B; --b1:#A9762F; --b2:#7C5793;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Segoe UI",system-ui,sans-serif;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Songti SC",serif;
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
[hidden]{display:none !important}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:15px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
  padding-bottom:32px;
}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
kbd{font-family:var(--font);font-size:10px;background:var(--line-2);border:1px solid var(--line);
  border-radius:4px;padding:1px 4px;color:var(--ink-3);margin-left:4px}

/* ================= 顶栏 ================= */
.topbar{
  max-width:760px;margin:0 auto;padding:18px 18px 10px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.brand{display:flex;align-items:center;gap:11px}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:none;
  background:linear-gradient(150deg,#2E6B58,#417F68);
  color:#F4EFE4;display:grid;place-items:center;
  font-family:var(--serif);font-size:17px;letter-spacing:.5px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.22), 0 6px 14px -8px rgba(46,107,88,.8);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16.5px;letter-spacing:.2px}
.brand-text small{color:var(--ink-3);font-size:11.5px;letter-spacing:.3px}
.topbar-right{display:flex;align-items:center;gap:8px}
.streak{
  display:flex;align-items:center;gap:5px;font-size:13px;font-weight:600;
  background:var(--card);border:1px solid var(--line);border-radius:999px;
  padding:5px 11px;color:var(--ink-2);box-shadow:var(--shadow);
}
.streak-flame{filter:saturate(.9)}
.icon-btn{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:var(--card);border:1px solid var(--line);font-size:15px;color:var(--ink-2);
  box-shadow:var(--shadow);transition:.18s;
}
.icon-btn:hover{transform:translateY(-1px)}
.icon-btn.off{opacity:.45}

/* ================= 等级条 ================= */
.levelbar{
  max-width:760px;margin:0 auto;padding:4px 18px 12px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:8px;
}
.lv-btn{
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:9px 8px 8px;text-align:left;position:relative;overflow:hidden;
  transition:.2s;box-shadow:var(--shadow);
}
.lv-btn .lv-top{display:flex;align-items:baseline;justify-content:space-between}
.lv-btn b{font-size:14px;letter-spacing:.4px}
.lv-btn em{font-style:normal;font-size:10.5px;color:var(--ink-3)}
.lv-btn .lv-bar{height:3px;border-radius:2px;background:var(--line-2);margin-top:7px;overflow:hidden}
.lv-btn .lv-bar i{display:block;height:100%;border-radius:2px;width:0;transition:width .4s}
.lv-btn.active{border-color:transparent;box-shadow:0 0 0 1.5px currentColor inset, var(--shadow)}
.lv-btn[data-lv="A1"]{color:var(--a1)} .lv-btn[data-lv="A2"]{color:var(--a2)}
.lv-btn[data-lv="B1"]{color:var(--b1)} .lv-btn[data-lv="B2"]{color:var(--b2)}
.lv-btn[data-lv="A1"] b,.lv-btn[data-lv="A2"] b,.lv-btn[data-lv="B1"] b,.lv-btn[data-lv="B2"] b{color:var(--ink)}
.lv-btn[data-lv="A1"] i{background:var(--a1)} .lv-btn[data-lv="A2"] i{background:var(--a2)}
.lv-btn[data-lv="B1"] i{background:var(--b1)} .lv-btn[data-lv="B2"] i{background:var(--b2)}

/* ================= Tab ================= */
.tabs{
  max-width:760px;margin:0 auto 14px;padding:0 18px;
  display:flex;gap:4px;position:sticky;top:0;z-index:20;
  background:linear-gradient(var(--bg) 72%,rgba(246,242,234,0));
}
.tabs .tab{
  flex:1;padding:9px 4px;border-radius:11px;font-size:13.5px;color:var(--ink-3);
  font-weight:500;transition:.18s;
}
.tabs .tab.active{background:var(--card);color:var(--ink);font-weight:600;
  box-shadow:var(--shadow);border:1px solid var(--line)}

/* ================= 通用 ================= */
main#app{max-width:760px;margin:0 auto;padding:0 18px 24px}
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 16px;box-shadow:var(--shadow);margin-bottom:12px;
}
.panel-h{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.panel-h h2{margin:0;font-size:14px;letter-spacing:.3px;font-weight:650}
.panel-h .sub{font-size:11.5px;color:var(--ink-3);font-weight:400}
.muted{color:var(--ink-3)}
.pill{
  display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:600;
  padding:3px 9px;border-radius:999px;background:var(--line-2);color:var(--ink-2);
}
.btn-primary{
  width:100%;padding:14px;border-radius:14px;font-size:15px;font-weight:650;color:#F6F2E8;
  background:linear-gradient(160deg,#34755F,#255C4B);
  box-shadow:0 10px 22px -14px rgba(37,92,75,.9), inset 0 1px 0 rgba(255,255,255,.16);
  transition:.18s;letter-spacing:.3px;
}
.btn-primary:hover{transform:translateY(-1px)}
.btn-primary:disabled{opacity:.45;transform:none;cursor:default}
.btn-ghost{
  padding:10px 16px;border-radius:12px;border:1px solid var(--line);
  background:var(--bg-soft);color:var(--ink-2);font-size:13.5px;font-weight:550;transition:.18s;
}
.btn-ghost:hover{background:#fff}
.row{display:flex;gap:9px}
.row > *{flex:1}
.empty{text-align:center;color:var(--ink-3);font-size:13px;padding:18px 6px}

/* ================= 今日 ================= */
.hero{
  background:linear-gradient(155deg,#2C6653,#3E7C64 60%,#4C8A6F);
  color:#F2EFE4;border-radius:22px;padding:18px;margin-bottom:12px;position:relative;overflow:hidden;
  box-shadow:0 18px 34px -26px rgba(31,81,66,.95);
}
.hero::after{
  content:"";position:absolute;right:-46px;top:-56px;width:190px;height:190px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(255,255,255,.16),rgba(255,255,255,0) 70%);
}
.hero-top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.hero-day{font-family:var(--serif);font-size:26px;line-height:1.15;letter-spacing:.4px}
.hero-day small{display:block;font-family:var(--font);font-size:11px;letter-spacing:.4px;
  opacity:.72;margin-bottom:5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:190px}
.hero-cat{margin-top:7px;font-size:12.5px;opacity:.85;display:flex;flex-wrap:wrap;gap:6px}
.hero-cat span{background:rgba(255,255,255,.14);border-radius:999px;padding:2px 9px}
.ring{width:74px;height:74px;flex:none;position:relative;display:grid;place-items:center}
.ring svg{position:absolute;inset:0;transform:rotate(-90deg)}
.ring-num{font-size:15px;font-weight:650;letter-spacing:.2px}
.ring-lbl{font-size:9px;opacity:.7;letter-spacing:.6px;margin-top:-2px}
.hero-stats{display:flex;gap:16px;margin-top:15px;padding-top:13px;border-top:1px solid rgba(255,255,255,.16)}
.hero-stats div{font-size:12px;opacity:.86}
.hero-stats b{display:block;font-size:19px;font-family:var(--serif);letter-spacing:.5px;opacity:1}

.queue{display:flex;flex-direction:column;gap:6px}
.qhead{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-3);margin:2px 0 2px}
.qhead::after{content:"";flex:1;height:1px;background:var(--line-2)}
.wrow{
  display:flex;align-items:center;gap:10px;padding:8px 9px;border-radius:11px;
  transition:.15s;border:1px solid transparent;
}
.wrow:hover{background:var(--bg-soft);border-color:var(--line-2)}
.wrow .idx{font-size:10.5px;color:var(--ink-3);width:16px;flex:none;text-align:right;font-variant-numeric:tabular-nums}
.wrow .wmain{flex:1;min-width:0;display:flex;align-items:baseline;gap:7px;flex-wrap:nowrap;overflow:hidden}
.wrow .w{font-family:var(--serif);font-size:16.5px;letter-spacing:.2px;white-space:nowrap;flex:none}
.wrow .p{font-size:11.5px;color:var(--ink-3);font-style:italic;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:0 1 auto}
.wrow .sp{font-size:11.5px;color:var(--ink-2);background:var(--accent-soft);border-radius:6px;padding:1px 6px;
  white-space:nowrap;flex:none}
.wrow .say{color:var(--ink-3);font-size:14px;padding:4px 6px;border-radius:8px}
.wrow .say:hover{background:var(--accent-soft);color:var(--accent)}
.wrow .tag{font-size:10.5px;color:var(--ink-3);flex:none;max-width:92px;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap;text-align:right}

.dots{display:flex;gap:4px;flex-wrap:wrap;margin-top:11px}
.dots i{width:100%;max-width:14px;height:14px;border-radius:4px;background:var(--line-2);flex:1;transition:.3s}
.dots i.on{background:var(--accent);opacity:.9}
.dots i.half{background:var(--accent);opacity:.35}

/* ================= 学习会话 ================= */
.session{
  position:fixed;inset:0;z-index:60;background:var(--bg);
  display:flex;flex-direction:column;overflow:hidden;
  animation:fade .22s ease;
}
@keyframes fade{from{opacity:0}to{opacity:1}}
.session-top{
  display:flex;align-items:center;gap:12px;padding:14px 16px 6px;
  max-width:760px;width:100%;margin:0 auto;
}
.session-progress{flex:1}
.session-progress .bar{height:5px;border-radius:3px;background:var(--line);overflow:hidden}
.session-progress .bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,#3E7C64,#5E9C7C);
  border-radius:3px;transition:width .3s}
.session-meta{display:flex;justify-content:space-between;font-size:11px;color:var(--ink-3);margin-top:5px;letter-spacing:.3px}
.session-right .mini{
  font-size:10.5px;color:var(--ink-2);background:var(--card);border:1px solid var(--line);
  border-radius:999px;padding:3px 9px;font-weight:600;
}
.card-wrap{flex:1;display:grid;place-items:center;padding:10px 16px 0;overflow:auto;max-width:760px;width:100%;margin:0 auto}
.wordcard{
  width:100%;min-height:340px;display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:24px;
  padding:22px 22px 18px;box-shadow:0 24px 50px -34px rgba(45,40,30,.5);
  animation:pop .26s cubic-bezier(.2,.9,.3,1);
}
@keyframes pop{from{opacity:0;transform:translateY(8px) scale(.99)}to{opacity:1;transform:none}}
.card-label{font-size:10.5px;letter-spacing:1px;text-transform:uppercase;color:var(--ink-3);margin-bottom:10px}
.word{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.word #wWord{font-family:var(--serif);font-size:38px;line-height:1.12;letter-spacing:.3px;word-break:break-word}
.speak{
  width:36px;height:36px;border-radius:11px;background:var(--accent-soft);color:var(--accent);
  display:grid;place-items:center;font-size:15px;transition:.18s;flex:none;
}
.speak:hover{background:#D6E7DC;transform:scale(1.05)}
.speak.playing{animation:pulse .9s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(46,107,88,.28)}50%{box-shadow:0 0 0 8px rgba(46,107,88,0)}}
.ipa{font-family:var(--serif);color:var(--ink-2);font-size:15px;margin-top:5px;letter-spacing:.3px}
.ipa::before{content:"/";opacity:.4} .ipa::after{content:"/";opacity:.4}
.card-body{margin-top:16px;display:flex;flex-direction:column;gap:14px;flex:1}
.posblock{border-top:1px dashed var(--line);padding-top:12px}
.posblock:first-child{border-top:none;padding-top:0}
.posline{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.pos{font-size:10.5px;font-weight:700;letter-spacing:.4px;color:var(--accent);
  background:var(--accent-soft);border-radius:6px;padding:1px 7px;text-transform:lowercase}
.pos-zh{font-size:16px;font-weight:600;letter-spacing:.2px}
.ex{margin-top:8px;font-size:14.5px;line-height:1.62;color:var(--ink);display:flex;gap:7px;align-items:flex-start}
.ex .txt{flex:1}
.ex .say{font-size:12.5px;color:var(--ink-3);padding:2px 5px;border-radius:6px;flex:none;margin-top:2px}
.ex .say:hover{background:var(--accent-soft);color:var(--accent)}
.exz{font-size:12.5px;color:var(--ink-3);margin-top:3px;padding-left:0}
.hide-zh .exz{filter:blur(5px);cursor:pointer;user-select:none}
.hide-zh .exz.revealed{filter:none}

.recall{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:10px 0}
.recall-txt{font-size:13px;color:var(--ink-3);letter-spacing:.3px}
.grade-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:9px;padding:12px 16px 18px;
  max-width:760px;width:100%;margin:0 auto;
}
.grade{
  border-radius:15px;padding:11px 6px;display:flex;flex-direction:column;align-items:center;gap:2px;
  border:1px solid var(--line);background:var(--card);transition:.16s;box-shadow:var(--shadow);
}
.grade b{font-size:14px;font-weight:650}
.grade small{font-size:10px;color:var(--ink-3)}
.grade:hover{transform:translateY(-2px)}
.grade.g0{color:var(--warn)} .grade.g0:hover{background:var(--warn-soft);border-color:#EBD3C9}
.grade.g1{color:var(--gold)} .grade.g1:hover{background:var(--gold-soft);border-color:#EBDCBC}
.grade.g2{color:var(--accent)} .grade.g2:hover{background:var(--accent-soft);border-color:#CFE2D6}
.next-row{padding:12px 16px 18px;max-width:760px;width:100%;margin:0 auto}

/* ================= 词库 ================= */
.searchbar{display:flex;gap:8px;margin-bottom:10px}
.searchbar input{
  flex:1;padding:11px 14px;border-radius:12px;border:1px solid var(--line);background:var(--card);
  font-size:14px;font-family:inherit;color:var(--ink);outline:none;box-shadow:var(--shadow);
}
.searchbar input:focus{border-color:#C9D9CF;box-shadow:0 0 0 3px rgba(46,107,88,.08)}
.chips{display:flex;gap:6px;overflow-x:auto;padding:2px 0 10px;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{
  flex:none;font-size:12px;padding:5px 11px;border-radius:999px;border:1px solid var(--line);
  background:var(--card);color:var(--ink-2);white-space:nowrap;transition:.15s;
}
.chip.on{background:var(--accent);color:#F2EFE4;border-color:var(--accent);font-weight:600}
.librow{
  display:flex;align-items:center;gap:10px;padding:10px 4px;border-bottom:1px solid var(--line-2);
  cursor:pointer;
}
.librow:last-child{border-bottom:none}
.librow .w{font-family:var(--serif);font-size:16px}
.librow .sp{font-size:11px;color:var(--ink-3);font-style:italic}
.librow .zh{font-size:11.5px;color:var(--ink-3);margin-left:auto;text-align:right;max-width:46%;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.st{width:7px;height:7px;border-radius:50%;background:var(--line);flex:none}
.st.s1{background:#D9C98F} .st.s2{background:var(--gold)} .st.s3{background:var(--accent)}

/* ================= 统计 ================= */
.statgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:12px}
.stat{
  background:var(--card);border:1px solid var(--line);border-radius:16px;padding:13px 14px;box-shadow:var(--shadow);
}
.stat b{display:block;font-family:var(--serif);font-size:26px;line-height:1.2;letter-spacing:.5px}
.stat small{font-size:11.5px;color:var(--ink-3);letter-spacing:.3px}
.forecast{display:flex;align-items:flex-end;gap:6px;height:96px;margin-top:6px}
.fcol{flex:1;display:flex;flex-direction:column;align-items:center;gap:5px;height:100%;justify-content:flex-end}
.fbar{width:100%;border-radius:5px 5px 3px 3px;background:linear-gradient(180deg,#5E9C7C,#3E7C64);min-height:3px}
.fcol .n{font-size:10px;color:var(--ink-3)}
.fcol .d{font-size:9.5px;color:var(--ink-3)}
.heat{display:grid;grid-template-columns:repeat(14,1fr);gap:4px;margin-top:8px}
.heat i{aspect-ratio:1;border-radius:3px;background:var(--line-2)}
.heat i.l1{background:#D9E8DE} .heat i.l2{background:#A8CBB7}
.heat i.l3{background:#6FA98C} .heat i.l4{background:#2E6B58}
.lvprog{margin-top:4px}
.lvprog .r{display:flex;align-items:center;gap:9px;padding:7px 0}
.lvprog .r b{width:26px;font-size:12px}
.lvprog .r .bar{flex:1;height:6px;border-radius:4px;background:var(--line-2);overflow:hidden}
.lvprog .r .bar i{display:block;height:100%;border-radius:4px}
.lvprog .r em{font-style:normal;font-size:11px;color:var(--ink-3);width:76px;text-align:right;font-variant-numeric:tabular-nums}

/* ================= 设置 ================= */
.setrow{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid var(--line-2)}
.setrow:last-child{border-bottom:none}
.setrow .lbl{font-size:13.5px}
.setrow .lbl small{display:block;font-size:11px;color:var(--ink-3);margin-top:2px;font-weight:400}
.seg{display:flex;gap:3px;background:var(--line-2);border-radius:10px;padding:3px}
.seg button{padding:5px 10px;border-radius:8px;font-size:12px;color:var(--ink-2)}
.seg button.on{background:var(--card);color:var(--ink);font-weight:650;box-shadow:0 1px 3px rgba(0,0,0,.07)}
.switch{width:44px;height:26px;border-radius:999px;background:var(--line);position:relative;transition:.2s;flex:none}
.switch::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;
  background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.2);transition:.2s}
.switch.on{background:var(--accent)}
.switch.on::after{transform:translateX(18px)}
select,input[type=range]{font-family:inherit;accent-color:var(--accent)}
input[type=range]{-webkit-appearance:none;height:4px;border-radius:2px;background:var(--line);outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;
  background:#fff;border:2px solid var(--accent);box-shadow:0 1px 4px rgba(0,0,0,.18);cursor:pointer}
select{color:var(--ink)}

/* ================= 弹层 ================= */
.modal{position:fixed;inset:0;z-index:70;background:rgba(30,28,22,.42);display:grid;place-items:center;padding:16px;
  backdrop-filter:blur(2px);animation:fade .18s}
.modal-card{
  background:var(--card);border-radius:22px;max-width:520px;width:100%;max-height:86vh;overflow:auto;
  padding:20px;box-shadow:0 30px 60px -30px rgba(0,0,0,.5);animation:pop .22s
}

.foot{max-width:760px;margin:8px auto 0;padding:0 18px;font-size:10.5px;color:var(--ink-3);text-align:center;letter-spacing:.3px}

/* ================= 响应式 ================= */
@media (max-width:520px){
  .wrow{padding:8px 6px;gap:7px}
  .wrow .idx{width:13px}
  .wrow .w{font-size:15.5px}
  .wrow .p{font-size:10.5px}
  .wrow .sp{font-size:10.5px;padding:1px 4px}
  .wrow .tag{max-width:62px;font-size:10px}
  .hero-stats{gap:10px}
  .hero-stats b{font-size:17px}
  .hero-stats div{font-size:11px}
  .word #wWord{font-size:32px}
  .hero-day{font-size:22px}
  .ring{width:64px;height:64px}
  .statgrid{grid-template-columns:repeat(2,1fr)}
  .levelbar{gap:6px}
  .lv-btn{padding:8px 7px 7px}
}
@media (max-width:380px){
  .wrow .tag{display:none}
  .hero-day{font-size:19px}
  .hero-cat span{font-size:11px}
  .lv-btn b{font-size:13px}
  .lv-btn em{font-size:9.5px}
}
@media (min-width:900px){
  body{font-size:15.5px}
}