/* ===========================================================
   深学英语 · Shenzhen Primary English
   Light theme, mobile-first, responsive for phone / iPad / desktop
   =========================================================== */

:root{
  --bg:#f5f7fc;
  --bg-grad-1:#eaf1ff;
  --bg-grad-2:#f7f2ff;
  --card:#ffffff;
  --card-soft:#f8fafd;
  --ink:#0f172a;
  --ink-2:#475569;
  --ink-3:#8798ad;
  --line:#e6ecf5;
  --line-strong:#d5dfec;
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --primary-soft:#e8f0ff;
  --accent:#f59e0b;
  --accent-soft:#fff5e2;
  --ok:#15a34a;
  --ok-soft:#e7f8ee;
  --bad:#e11d48;
  --bad-soft:#ffe9ef;
  --violet:#7c3aed;
  --teal:#0d9488;
  --radius:18px;
  --radius-sm:12px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.05);
  --shadow:0 1px 2px rgba(15,23,42,.04), 0 14px 28px -20px rgba(15,23,42,.28);
  --shadow-lg:0 30px 60px -30px rgba(15,23,42,.35);
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-en: "Segoe UI", "Helvetica Neue", Arial, var(--font);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  background-image:
    radial-gradient(1100px 520px at 8% -10%, var(--bg-grad-1) 0%, rgba(234,241,255,0) 62%),
    radial-gradient(900px 520px at 96% 4%, var(--bg-grad-2) 0%, rgba(247,242,255,0) 60%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
  font-size:15px;
}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:15px;color:var(--ink)}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p{margin:0}
.wrap{width:100%;max-width:1140px;margin:0 auto;padding:0 22px}

/* ---------------- topbar ---------------- */
.topbar{
  position:sticky;top:0;z-index:40;
  background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar-inner{display:flex;align-items:center;gap:16px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,#3b82f6,#1d4ed8 60%,#4338ca);
  color:#fff;font-weight:800;font-size:14px;letter-spacing:.5px;
  box-shadow:0 8px 18px -8px rgba(37,99,235,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;letter-spacing:.3px}
.brand-text small{font-size:11px;color:var(--ink-3);letter-spacing:.2px}
.topbar-meta{flex:1 1 auto;display:flex;gap:8px;justify-content:flex-end;flex-wrap:wrap}
.meta-chip{
  display:inline-flex;align-items:center;gap:6px;
  height:30px;padding:0 12px;border-radius:999px;
  background:var(--card-soft);border:1px solid var(--line);
  font-size:12px;color:var(--ink-2);white-space:nowrap;
}
.meta-chip b{color:var(--ink);font-weight:700}
.meta-chip.warn{background:var(--accent-soft);border-color:#f7e2b5;color:#94620a}
.topbar-actions{display:flex;gap:8px;flex:0 0 auto}

/* ---------------- buttons ---------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:42px;padding:0 18px;border-radius:12px;border:1px solid transparent;
  font-size:14px;font-weight:600;letter-spacing:.2px;
  transition:transform .16s ease, box-shadow .16s ease, background .16s ease, border-color .16s ease;
  user-select:none;
}
.btn:active{transform:translateY(1px) scale(.995)}
.btn-primary{
  background:linear-gradient(160deg,#3b82f6,#2563eb 55%,#1d4ed8);
  color:#fff;box-shadow:0 10px 22px -12px rgba(37,99,235,.95);
}
.btn-primary:hover{box-shadow:0 14px 26px -12px rgba(37,99,235,.95)}
.btn-ghost{background:#fff;border-color:var(--line-strong);color:var(--ink-2)}
.btn-ghost:hover{border-color:#c3d1e4;color:var(--ink);background:#fbfdff}
.btn-soft{background:var(--primary-soft);color:var(--primary-dark);border-color:#cfe0ff}
.btn-soft:hover{background:#dceaff}
.btn-ok{background:var(--ok-soft);color:#0d7a38;border-color:#c6e9d3}
.btn-bad{background:var(--bad-soft);color:#b3113c;border-color:#f8cfd9}
.btn-sm{height:34px;padding:0 13px;font-size:13px;border-radius:10px}
.btn-lg{height:50px;padding:0 26px;font-size:16px;border-radius:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;pointer-events:none}

/* ---------------- tabs (desktop) ---------------- */
.tabs{
  display:flex;gap:6px;margin-top:18px;margin-bottom:4px;
  background:rgba(255,255,255,.7);border:1px solid var(--line);
  border-radius:16px;padding:6px;box-shadow:var(--shadow-sm);
  overflow-x:auto;scrollbar-width:none;
}
.tabs::-webkit-scrollbar{display:none}
.tab{
  flex:1 1 0;min-width:96px;
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:40px;border:0;background:transparent;border-radius:11px;
  font-size:14px;font-weight:600;color:var(--ink-2);white-space:nowrap;
  transition:background .16s, color .16s, box-shadow .16s;
}
.tab:hover{background:#f3f7ff;color:var(--ink)}
.tab.active{background:linear-gradient(160deg,#3b82f6,#2563eb);color:#fff;box-shadow:0 10px 20px -14px rgba(37,99,235,1)}
.tab .badge{
  min-width:18px;height:18px;padding:0 5px;border-radius:9px;
  background:var(--accent);color:#fff;font-size:11px;font-weight:700;
  display:inline-grid;place-items:center;line-height:1;
}
.tab.active .badge{background:#fff;color:var(--primary-dark)}

/* ---------------- main / views ---------------- */
.main{padding-top:20px;padding-bottom:60px}
.view{animation:rise .28s ease both}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;margin:26px 0 12px;flex-wrap:wrap}
.section-head h2{font-size:18px;letter-spacing:.2px}
.section-head p{font-size:13px;color:var(--ink-3);margin-top:2px}
.section-head:first-child{margin-top:2px}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:20px;
}
.card + .card{margin-top:14px}
.card-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:4px}
.card-title h3{font-size:15px;font-weight:700;letter-spacing:.2px}
.card-title .hint{font-size:12px;color:var(--ink-3)}
.card-sub{font-size:12.5px;color:var(--ink-3);margin:0 0 14px}

.grid{display:grid;gap:14px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.spacer{flex:1 1 auto}

/* ---------------- KPI ---------------- */
.kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.kpi{
  background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px;
  box-shadow:var(--shadow-sm);position:relative;overflow:hidden;
}
.kpi::after{
  content:"";position:absolute;right:-24px;top:-24px;width:70px;height:70px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,99,235,.10),rgba(37,99,235,0) 70%);
}
.kpi .label{font-size:12px;color:var(--ink-3);letter-spacing:.3px}
.kpi .value{font-size:26px;font-weight:800;letter-spacing:-.5px;line-height:1.25;margin-top:2px}
.kpi .value small{font-size:13px;font-weight:600;color:var(--ink-3);margin-left:3px}
.kpi .foot{font-size:11.5px;color:var(--ink-3);margin-top:2px}

/* ---------------- onboarding / empty ---------------- */
.hero{
  background:linear-gradient(140deg,#1e3a8a 0%,#2563eb 48%,#4f46e5 100%);
  border-radius:24px;color:#fff;padding:34px 32px;position:relative;overflow:hidden;
  box-shadow:0 30px 60px -34px rgba(30,58,138,.85);
}
.hero::before{
  content:"";position:absolute;inset:auto -60px -140px auto;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle, rgba(255,255,255,.22), rgba(255,255,255,0) 66%);
}
.hero::after{
  content:"";position:absolute;right:80px;top:-90px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle, rgba(245,158,11,.35), rgba(245,158,11,0) 68%);
}
.hero h1{font-size:26px;letter-spacing:.4px;line-height:1.35;position:relative}
.hero p{font-size:13.5px;color:rgba(255,255,255,.82);margin-top:10px;max-width:560px;position:relative}
.hero .row{margin-top:20px;position:relative}
.hero .btn-primary{background:#fff;color:#1d4ed8;box-shadow:0 12px 26px -14px rgba(0,0,0,.6)}
.hero .btn-ghost{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.32);color:#fff}
.hero .btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff}
.hero-badges{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px;position:relative}
.hero-badges span{
  font-size:11.5px;padding:5px 10px;border-radius:999px;
  background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.22);color:rgba(255,255,255,.9);
}

.empty{
  text-align:center;padding:34px 20px;color:var(--ink-3);font-size:13.5px;
  border:1px dashed var(--line-strong);border-radius:var(--radius);background:var(--card-soft);
}
.empty strong{display:block;color:var(--ink);font-size:15px;margin-bottom:6px}

/* ---------------- study card ---------------- */
.study{max-width:720px;margin:0 auto}
.study-head{display:flex;align-items:center;gap:14px;margin-bottom:14px;flex-wrap:wrap}
.progress{flex:1 1 180px;height:8px;border-radius:999px;background:#e7eefb;overflow:hidden}
.progress-bar{height:100%;border-radius:999px;background:linear-gradient(90deg,#60a5fa,#2563eb);transition:width .35s ease}
.study-stats{display:flex;gap:12px;font-size:12.5px;color:var(--ink-2);font-weight:600}
.study-stats .ok{color:var(--ok)}
.study-stats .bad{color:var(--bad)}

.card-study{
  padding:26px 24px 22px;border-radius:22px;
  box-shadow:0 30px 60px -34px rgba(15,23,42,.35), var(--shadow-sm);
}
.study-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.tag{
  font-size:11.5px;padding:4px 10px;border-radius:999px;font-weight:600;
  background:#f1f5fb;color:var(--ink-2);border:1px solid var(--line);
}
.tag.new{background:var(--ok-soft);color:#0d7a38;border-color:#c6e9d3}
.tag.review{background:var(--primary-soft);color:var(--primary-dark);border-color:#cfe0ff}
.tag.repeat{background:var(--accent-soft);color:#94620a;border-color:#f7e2b5}
.tag.stage{background:var(--bg-grad-2);color:#5b21b6;border-color:#e6dbff}

.prompt-wrap{text-align:center;padding:10px 0 18px}
.prompt-en{
  font-family:var(--font-en);font-size:44px;font-weight:800;letter-spacing:-.5px;line-height:1.2;
  word-break:break-word;
}
.prompt-cn{font-size:34px;font-weight:800;letter-spacing:1px}
.prompt-sub{font-size:13px;color:var(--ink-3);margin-top:8px}
.audio-btn{
  display:inline-flex;align-items:center;gap:8px;margin-top:14px;
  height:42px;padding:0 18px;border-radius:999px;border:1px solid #cfe0ff;background:var(--primary-soft);
  color:var(--primary-dark);font-weight:600;font-size:14px;
}
.audio-btn:hover{background:#dbe8ff}
.audio-btn.playing{animation:pulse 1s infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.045)}}

.options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.option{
  display:flex;align-items:center;gap:10px;text-align:left;
  min-height:58px;padding:12px 16px;border-radius:14px;
  background:#fff;border:1.5px solid var(--line-strong);
  font-size:16px;font-weight:600;color:var(--ink);
  transition:border-color .14s, background .14s, transform .14s, box-shadow .14s;
}
.option .key{
  width:22px;height:22px;border-radius:7px;display:grid;place-items:center;flex:0 0 auto;
  background:#f1f5fb;color:var(--ink-3);font-size:11.5px;font-weight:700;
}
.option:hover{border-color:#a9c4ee;background:#fbfdff;transform:translateY(-1px);box-shadow:0 10px 20px -18px rgba(15,23,42,.6)}
.option.correct{border-color:#86d6a6;background:var(--ok-soft);color:#0b6b31}
.option.correct .key{background:#c9efd7;color:#0b6b31}
.option.wrong{border-color:#f4a9bc;background:var(--bad-soft);color:#a30f36}
.option.wrong .key{background:#ffd3de;color:#a30f36}
.option.dim{opacity:.55}
.option[disabled]{cursor:default}

.spell-box{display:flex;flex-direction:column;gap:10px;align-items:center}
.spell-hint{
  font-family:var(--font-en);font-size:20px;letter-spacing:5px;color:var(--ink-3);
  background:var(--card-soft);border:1px dashed var(--line-strong);border-radius:10px;padding:6px 14px;
}
.spell-input{
  width:100%;max-width:420px;height:54px;text-align:center;
  font-family:var(--font-en);font-size:22px;font-weight:700;letter-spacing:1px;
  border:1.5px solid var(--line-strong);border-radius:14px;background:#fff;outline:none;
  transition:border-color .15s, box-shadow .15s;
}
.spell-input:focus{border-color:#93b4ea;box-shadow:0 0 0 4px rgba(37,99,235,.10)}
.spell-input.correct{border-color:#86d6a6;background:var(--ok-soft)}
.spell-input.wrong{border-color:#f4a9bc;background:var(--bad-soft)}
.spell-tools{display:flex;gap:10px;align-items:center;flex-wrap:wrap;justify-content:center}

.feedback{margin-top:16px;border-radius:14px;padding:12px 14px;font-size:13.5px;display:flex;gap:10px;align-items:flex-start}
.feedback.ok{background:var(--ok-soft);color:#0b6b31;border:1px solid #c9efd7}
.feedback.bad{background:var(--bad-soft);color:#a30f36;border:1px solid #ffd3de}
.feedback b{font-family:var(--font-en)}
.feedback .fi{font-size:16px;line-height:1.2}

/* ---------------- forms ---------------- */
.field{margin-bottom:16px}
.field > label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:7px}
.field .desc{font-size:12px;color:var(--ink-3);margin-top:5px}
.input{
  width:100%;height:44px;padding:0 14px;border-radius:12px;border:1.5px solid var(--line-strong);
  background:#fff;outline:none;transition:border-color .15s, box-shadow .15s;
}
.input:focus{border-color:#93b4ea;box-shadow:0 0 0 4px rgba(37,99,235,.10)}
textarea.input{height:auto;padding:12px 14px;resize:vertical;line-height:1.6}
.segmented{display:flex;gap:6px;background:#f1f5fb;border:1px solid var(--line);padding:5px;border-radius:13px}
.segmented button{
  flex:1 1 0;height:38px;border:0;border-radius:9px;background:transparent;
  font-size:13.5px;font-weight:600;color:var(--ink-2);transition:all .15s;
}
.segmented button.active{background:#fff;color:var(--primary-dark);box-shadow:0 4px 12px -6px rgba(15,23,42,.4)}

.grade-picker{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px}
.grade-card{
  border:1.5px solid var(--line-strong);background:#fff;border-radius:13px;
  padding:11px 6px;text-align:center;transition:all .15s;
}
.grade-card .g-num{font-size:15px;font-weight:800;letter-spacing:-.2px}
.grade-card .g-sub{font-size:11px;color:var(--ink-3);margin-top:1px}
.grade-card:hover{border-color:#a9c4ee;transform:translateY(-1px)}
.grade-card.active{border-color:var(--primary);background:linear-gradient(160deg,#eff5ff,#e2edff);box-shadow:0 8px 18px -14px rgba(37,99,235,.9)}
.grade-card.active .g-num{color:var(--primary-dark)}

/* 词库选择 */
.bank-list{display:flex;flex-direction:column;gap:8px}
.bank-item{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  border:1.5px solid var(--line-strong);background:#fff;border-radius:12px;
  padding:10px 14px;text-align:left;transition:all .15s;
}
.bank-item .bn{font-size:14px;font-weight:700;color:var(--ink)}
.bank-item .bc{font-size:12px;color:var(--ink-3);white-space:nowrap}
.bank-item:hover{border-color:#a9c4ee}
.bank-item.active{border-color:var(--primary);background:linear-gradient(160deg,#eff5ff,#e2edff)}
.bank-item.active .bn{color:var(--primary-dark)}

.stepper{display:flex;align-items:center;gap:10px}
.stepper button{
  width:38px;height:38px;border-radius:11px;border:1.5px solid var(--line-strong);background:#fff;
  font-size:18px;font-weight:700;color:var(--ink-2);line-height:1;
}
.stepper button:hover{border-color:#a9c4ee;color:var(--primary)}
.stepper .num{min-width:64px;text-align:center;font-size:19px;font-weight:800;font-family:var(--font-en)}

/* ---------------- tables / lists ---------------- */
.tbl{width:100%;border-collapse:collapse;font-size:13.5px}
.tbl th{
  text-align:left;font-size:11.5px;letter-spacing:.4px;color:var(--ink-3);font-weight:600;
  padding:8px 10px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.tbl td{padding:10px;border-bottom:1px solid #f1f5fb;vertical-align:middle}
.tbl tr:last-child td{border-bottom:0}
.tbl .num{font-family:var(--font-en);font-weight:700}
.tbl-scroll{overflow-x:auto}

.list{display:flex;flex-direction:column;gap:9px}
.list-row{
  display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;
  background:var(--card-soft);border:1px solid var(--line);
}
.list-row .rank{
  width:24px;height:24px;border-radius:8px;display:grid;place-items:center;flex:0 0 auto;
  background:#eef4ff;color:var(--primary-dark);font-size:11.5px;font-weight:800;font-family:var(--font-en);
}
.list-row .w{font-family:var(--font-en);font-weight:700;font-size:14.5px;letter-spacing:.2px}
.list-row .z{font-size:12px;color:var(--ink-3)}
.list-row .bar{flex:1 1 90px;height:6px;border-radius:99px;background:#e9eff9;overflow:hidden;min-width:60px}
.list-row .bar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,#f87171,#e11d48)}
.list-row .val{font-size:12px;color:var(--ink-2);font-weight:700;font-family:var(--font-en);min-width:44px;text-align:right}

/* stage distribution */
.stage-list{display:flex;flex-direction:column;gap:8px}
.stage-row{display:flex;align-items:center;gap:10px;font-size:12.5px}
.stage-row .nm{width:74px;color:var(--ink-2);flex:0 0 auto;font-weight:600}
.stage-row .bar{flex:1 1 auto;height:14px;border-radius:7px;background:#f1f5fb;overflow:hidden}
.stage-row .bar i{display:block;height:100%;border-radius:7px;transition:width .4s ease}
.stage-row .ct{width:42px;text-align:right;font-family:var(--font-en);font-weight:700;color:var(--ink-2)}

/* grade check */
.gcheck{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.gcheck-item{border:1px solid var(--line);border-radius:13px;padding:12px;background:var(--card-soft)}
.gcheck-item .gh{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;font-weight:700}
.gcheck-item .gv{font-size:20px;font-weight:800;font-family:var(--font-en);margin-top:4px}
.gcheck-item .gf{font-size:11.5px;color:var(--ink-3)}
.pill{font-size:11px;padding:2px 8px;border-radius:999px;font-weight:600}
.pill.good{background:var(--ok-soft);color:#0d7a38}
.pill.mid{background:var(--accent-soft);color:#94620a}
.pill.low{background:var(--bad-soft);color:#b3113c}
.pill.bad{background:var(--bad-soft);color:#b3113c}

/* ---------------- charts ---------------- */
.chart-box{position:relative;width:100%;height:250px}
.chart-box canvas{display:block;width:100%;height:100%}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--ink-2);margin-top:10px}
.legend span{display:inline-flex;align-items:center;gap:6px}
.legend i{width:10px;height:10px;border-radius:3px;display:inline-block}

/* ---------------- suggestions ---------------- */
.sug{border:1px solid var(--line);border-radius:15px;padding:16px;background:#fff;display:flex;gap:14px}
.sug + .sug{margin-top:10px}
.sug .ico{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;flex:0 0 auto;
  font-size:17px;
}
.sug.danger .ico{background:var(--bad-soft)}
.sug.warn .ico{background:var(--accent-soft)}
.sug.info .ico{background:var(--primary-soft)}
.sug.good .ico{background:var(--ok-soft)}
.sug .body{flex:1 1 auto;min-width:0}
.sug h4{font-size:14px;font-weight:700;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.sug p{font-size:12.8px;color:var(--ink-2);margin-top:5px}
.sug .act{margin-top:11px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.sug .patch{
  font-family:var(--font-en);font-size:11.5px;color:var(--ink-3);
  background:var(--card-soft);border:1px solid var(--line);border-radius:8px;padding:3px 8px;
}

/* ---------------- exam ---------------- */
.exam-item{border:1px solid var(--line);border-radius:15px;padding:16px;background:#fff}
.exam-item + .exam-item{margin-top:12px}
.q-stem{font-size:14.5px;font-weight:600;line-height:1.7}
.q-stem .en{font-family:var(--font-en)}
.q-opt{
  display:flex;align-items:center;gap:10px;width:100%;text-align:left;
  padding:11px 14px;border-radius:11px;border:1.5px solid var(--line-strong);background:#fff;
  font-size:14px;margin-top:8px;transition:all .14s;
}
.q-opt:hover{border-color:#a9c4ee;background:#fbfdff}
.q-opt .k{width:20px;height:20px;border-radius:6px;display:grid;place-items:center;background:#f1f5fb;color:var(--ink-3);font-size:11px;font-weight:700;flex:0 0 auto}
.q-opt.correct{border-color:#86d6a6;background:var(--ok-soft)}
.q-opt.wrong{border-color:#f4a9bc;background:var(--bad-soft)}
.q-opt.correct .k{background:#c9efd7;color:#0b6b31}
.q-opt.wrong .k{background:#ffd3de;color:#a30f36}
.passage{
  background:var(--card-soft);border:1px solid var(--line);border-radius:13px;padding:14px 16px;
  font-family:var(--font-en);font-size:14.5px;line-height:1.85;color:#243044;
}
.passage .zh{font-family:var(--font);font-size:12px;color:var(--ink-3);margin-top:8px;line-height:1.7}
.word-bank{display:flex;gap:7px;flex-wrap:wrap;margin-top:8px}
.word-chip{
  padding:6px 12px;border-radius:9px;border:1.5px solid var(--line-strong);background:#fff;
  font-family:var(--font-en);font-size:13.5px;font-weight:600;color:var(--ink);
}
.word-chip:hover{border-color:#a9c4ee}
.word-chip.used{opacity:.35;pointer-events:none}
.answer-line{
  min-height:46px;border:1.5px dashed var(--line-strong);border-radius:11px;padding:8px 10px;
  display:flex;gap:6px;flex-wrap:wrap;align-items:center;background:var(--card-soft);
}
.answer-line .word-chip{background:#eef4ff;border-color:#cfe0ff}
.answer-line .ph{font-size:12.5px;color:var(--ink-3)}

.kw{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.kw span{font-size:11.5px;padding:3px 9px;border-radius:999px;background:#f1f5fb;color:var(--ink-3);border:1px solid var(--line);font-family:var(--font-en)}
.kw span.hit{background:var(--ok-soft);color:#0d7a38;border-color:#c6e9d3}
.score-ring{
  width:76px;height:76px;border-radius:50%;display:grid;place-items:center;
  font-family:var(--font-en);font-size:22px;font-weight:800;
  background:conic-gradient(var(--primary) calc(var(--p) * 1%), #eef3fb 0);
  position:relative;flex:0 0 auto;
}
.score-ring::after{content:"";position:absolute;inset:7px;border-radius:50%;background:#fff}
.score-ring span{position:relative;z-index:1}

/* ---------------- toast / modal ---------------- */
.toast{
  position:fixed;left:50%;bottom:92px;transform:translate(-50%,16px);
  background:#0f172a;color:#fff;font-size:13.5px;font-weight:500;
  padding:11px 18px;border-radius:12px;box-shadow:var(--shadow-lg);
  opacity:0;pointer-events:none;transition:all .24s ease;z-index:90;max-width:88vw;text-align:center;
}
.toast.show{opacity:1;transform:translate(-50%,0)}
.modal{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:20px}
.modal[hidden]{display:none}
.modal-mask{position:absolute;inset:0;background:rgba(15,23,42,.42);backdrop-filter:blur(4px)}
.modal-card{
  position:relative;background:#fff;border-radius:20px;max-width:560px;width:100%;
  max-height:86vh;overflow:auto;padding:24px;box-shadow:var(--shadow-lg);
  animation:pop .22s ease both;
}
@keyframes pop{from{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:none}}
.modal-card h3{font-size:17px;margin-bottom:10px}
.modal-card p{font-size:13.5px;color:var(--ink-2);margin-bottom:10px}
.modal-card .close{position:absolute;right:14px;top:12px;border:0;background:transparent;font-size:20px;color:var(--ink-3);line-height:1}
.code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11.5px;word-break:break-all;
  background:var(--card-soft);border:1px solid var(--line);border-radius:10px;padding:10px;
  max-height:120px;overflow:auto;color:var(--ink-2);
}

/* ---------------- mobile tabbar ---------------- */
.tabbar-mobile{display:none}

/* ---------------- responsive ---------------- */
@media (max-width:960px){
  .kpis{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .gcheck{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:760px){
  body{font-size:14.5px}
  .wrap{padding:0 14px}
  .topbar-inner{height:58px;gap:10px}
  .brand-text small{display:none}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:13px}
  .topbar-meta{display:none}
  .tabs{display:none}
  .main{padding-top:14px;padding-bottom:calc(88px + env(safe-area-inset-bottom))}
  .tabbar-mobile{
    display:grid;grid-template-columns:repeat(6,1fr);
    position:fixed;left:0;right:0;bottom:0;z-index:50;
    background:rgba(255,255,255,.94);backdrop-filter:blur(14px);
    border-top:1px solid var(--line);
    padding:6px 4px calc(6px + env(safe-area-inset-bottom));
  }
  .tabbar-mobile button{
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    border:0;background:transparent;padding:5px 0;border-radius:10px;
    font-size:10.5px;font-weight:600;color:var(--ink-3);position:relative;
  }
  .tabbar-mobile button.active{color:var(--primary-dark)}
  .tabbar-mobile button.active .ic{background:var(--primary-soft)}
  .tabbar-mobile .ic{
    width:26px;height:22px;border-radius:7px;display:grid;place-items:center;
  }
  .tabbar-mobile svg{width:17px;height:17px}
  .tabbar-mobile .badge{
    position:absolute;top:1px;right:calc(50% - 22px);
    min-width:15px;height:15px;padding:0 4px;border-radius:8px;background:var(--accent);color:#fff;
    font-size:9.5px;font-weight:700;display:grid;place-items:center;
  }
  .hero{padding:24px 20px;border-radius:20px}
  .hero h1{font-size:21px}
  .hero p{font-size:13px}
  .card{padding:16px;border-radius:16px}
  .card-study{padding:20px 16px 18px}
  .prompt-en{font-size:34px}
  .prompt-cn{font-size:27px}
  .options{grid-template-columns:1fr}
  .option{font-size:15px;min-height:52px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .kpis{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
  .kpi{padding:12px}
  .kpi .value{font-size:22px}
  .grade-picker{grid-template-columns:repeat(3,minmax(0,1fr))}
  .gcheck{grid-template-columns:repeat(2,minmax(0,1fr))}
  .chart-box{height:210px}
  .modal-card{padding:20px}
  .sug{padding:14px;gap:11px}
  .tbl{font-size:12.5px}
  .tabbar-mobile button .lbl{white-space:nowrap;transform:scale(.94)}
}
@media (max-width:420px){
  .prompt-en{font-size:30px}
  .study-stats{font-size:12px;gap:9px}
  .btn-lg{height:46px;padding:0 18px;font-size:15px}
}

/* ================= 今日任务 / 打卡 ================= */
.task-card .task-list{display:flex;flex-direction:column;gap:10px}
.task-row{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line,#e5ecf6);border-radius:14px;background:var(--card-soft,#f7fafd);transition:opacity .2s}
.task-row.done{opacity:.62}
.task-row.done .task-act{visibility:hidden}
.task-ico{flex:0 0 40px;width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px;color:#fff}
.task-body{flex:1 1 auto;min-width:0}
.task-body .tt{font-weight:600;font-size:14.5px;display:flex;align-items:center;gap:6px}
.task-body .ts{font-size:12.5px;color:var(--ink-3);margin-top:2px}
.task-check{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border-radius:50%;background:var(--ok);color:#fff;font-size:11px}
.task-act{flex:0 0 auto}
@media (max-width:480px){.task-act .btn{padding:7px 12px;font-size:13px}}

/* ================= 口语跟读 ================= */
.speak-card{text-align:center;padding:26px 18px}
.speak-sentence{font-family:var(--font-en);font-size:clamp(20px,3.4vw,27px);font-weight:600;line-height:1.45;color:var(--ink)}
.speak-zh{margin-top:8px;font-size:14px;color:var(--ink-3)}
.speak-card .row{justify-content:center}
.speak-card audio{width:100%;max-width:340px}
@keyframes recPulse{0%{box-shadow:0 0 0 0 rgba(225,29,72,.35)}70%{box-shadow:0 0 0 12px rgba(225,29,72,0)}100%{box-shadow:0 0 0 0 rgba(225,29,72,0)}}
.btn[data-act="rec-stop"]{animation:recPulse 1.4s infinite}

/* ================= 阅读点词查词 ================= */
.read-passage{font-size:16.5px;line-height:2.05}
.read-passage .rw{cursor:pointer;border-bottom:1px dashed transparent;transition:all .12s;padding:1px 0}
.read-passage .rw:hover{color:var(--primary);border-bottom-color:var(--primary);background:rgba(37,99,235,.06)}
.dict-pop{margin-top:12px;padding:10px 14px;border-radius:12px;background:rgba(37,99,235,.08);border:1px solid rgba(37,99,235,.18);font-size:14px}

/* ================= 我的（聚合入口） ================= */
.hub-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px}
.hub-item{display:flex;flex-direction:column;align-items:flex-start;gap:6px;padding:16px;border:1px solid var(--line,#e5ecf6);border-radius:16px;background:var(--card,#fff);cursor:pointer;text-align:left;transition:all .15s;font-family:inherit}
.hub-item:hover{border-color:var(--primary);box-shadow:0 4px 14px rgba(37,99,235,.1);transform:translateY(-1px)}
.hub-ic{width:36px;height:36px;border-radius:10px;background:rgba(37,99,235,.09);display:flex;align-items:center;justify-content:center;color:var(--primary)}
.hub-ic svg{width:20px;height:20px}
.hub-tt{font-weight:600;font-size:14.5px;color:var(--ink)}
.hub-ds{font-size:12px;color:var(--ink-3);line-height:1.5}
.gv small{font-size:12px;color:var(--ink-3);margin-left:2px}

/* ================= 分类 chips（口语场景 / 词汇选词范围） ================= */
.cat-chips{display:flex;flex-wrap:wrap;gap:8px}
.cat-chip{padding:8px 16px;border-radius:999px;border:1px solid var(--line,#e5ecf6);background:var(--card,#fff);color:var(--ink-2);font-size:14px;font-weight:600;cursor:pointer;font-family:inherit;transition:all .15s}
.cat-chip.active{background:var(--ink,#111827);color:#fff;border-color:var(--ink,#111827)}
.pill.today{background:rgba(37,99,235,.1);color:var(--primary);font-weight:700}

/* ================= 跟读模式列表与面板 ================= */
.fr-list{display:flex;flex-direction:column}
.fr-row{padding:14px 2px;border-bottom:1px solid var(--line,#eef2f8)}
.fr-row:last-child{border-bottom:none}
.fr-head{display:flex;align-items:flex-start;gap:10px}
.fr-panel{margin-top:12px;padding:16px 14px;border-radius:14px;background:var(--card-soft,#f7fafd);border:1px solid var(--line,#e8eef7)}
.fr-result{display:flex;gap:14px;align-items:flex-start;flex-wrap:wrap}
.fr-score{flex:0 0 76px;height:76px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff}
.fr-score b{font-size:24px;line-height:1}
.fr-score i{font-style:normal;font-size:11px;opacity:.85;margin-top:2px}
.fr-score.great{background:linear-gradient(135deg,#10b981,#059669)}
.fr-score.good{background:linear-gradient(135deg,#3b82f6,#2563eb)}
.fr-score.pass{background:linear-gradient(135deg,#f59e0b,#d97706)}
.fr-score.low{background:linear-gradient(135deg,#f87171,#e11d48)}
.fr-words{flex:1 1 200px;min-width:0;font-family:var(--font-en);font-size:16.5px;line-height:1.9;font-weight:500}
.tok.ok{color:var(--ink)}
.tok.soft{color:#d97706;border-bottom:2px solid #f59e0b}
.tok.miss{color:#e11d48;text-decoration:line-through;text-decoration-thickness:2px}
.fr-legend{display:flex;gap:12px;margin-top:6px;font-size:12.5px;color:var(--ink-3);flex-basis:100%}
.fr-legend .lg i{display:inline-block;width:14px;height:3px;border-radius:2px;margin-right:4px;vertical-align:middle}
.fr-legend .lg.miss i{background:#e11d48}
.fr-legend .lg.soft i{background:#f59e0b}
.fr-legend .lg.ok i{background:#10b981}
.fr-heard{flex-basis:100%;font-size:12.5px;color:var(--ink-3)}
.fr-mini{margin-left:8px;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:700;color:#fff;vertical-align:2px}
.fr-mini.great{background:#10b981}.fr-mini.good{background:#3b82f6}.fr-mini.pass{background:#f59e0b}.fr-mini.low{background:#e11d48}

/* ================= 按住录音按钮 ================= */
.btn-hold{min-width:200px;padding:14px 26px;border-radius:999px;background:var(--ink,#111827);color:#fff;font-size:15.5px;font-weight:700;border:none;cursor:pointer;user-select:none;-webkit-user-select:none;touch-action:none;font-family:inherit}
.btn-hold.rec{background:#e11d48;animation:recPulse 1.4s infinite}
.hold-tip{margin-top:8px;font-size:12.5px;color:var(--ink-3);text-align:center}
.hold-tip.on{color:#e11d48;font-weight:600}

/* ================= 练习建议列表 ================= */
.tip-list{margin:0;padding-left:20px;font-size:14px;color:var(--ink-2);line-height:2}

/* ================= 阅读外部期刊行 ================= */
.ext-row{display:flex;align-items:center;gap:12px;padding:13px 4px;border-bottom:1px solid var(--line,#eef2f8);text-decoration:none;color:inherit}
.ext-row:last-child{border-bottom:none}
.ext-badge{flex:0 0 46px;width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:13px;font-weight:800;font-family:var(--font-en)}
.ext-badge.ted{background:linear-gradient(135deg,#f43f5e,#dc2626)}
.ext-badge.cd{background:linear-gradient(135deg,#10b981,#0d9488)}
.ext-row .w{display:block;font-weight:700;font-size:14.5px;font-family:var(--font-en)}
.ext-row .z{display:block;font-size:12.5px;color:var(--ink-3);margin-top:2px}
.ext-arrow{flex:0 0 auto;font-size:20px;color:var(--ink-3)}