:root{
  --blue:#2563eb; --blue-d:#1e40af; --green:#10b981; --bg:#f6f8fc;
  --ink:#1f2937; --mut:#6b7280; --line:#e5e7eb; --warn:#f59e0b; --red:#ef4444;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Segoe UI",sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.6}
#app{max-width:560px;margin:0 auto;min-height:100vh;background:#fff;position:relative;overflow:hidden}
.page{display:none;padding:28px 22px 48px;animation:fade .35s ease}
.page.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------- landing ---------- */
.brand{font-weight:800;font-size:22px;color:var(--blue);letter-spacing:1px}
.hero-title{font-size:30px;font-weight:800;margin:34px 0 14px;line-height:1.3}
.hero-sub{color:var(--mut);font-size:15px;margin-bottom:30px}
.cta{background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff;border:none;
  font-size:18px;font-weight:700;padding:16px 0;width:100%;border-radius:14px;cursor:pointer;
  box-shadow:0 8px 24px rgba(37,99,235,.32);transition:transform .12s}
.cta:active{transform:scale(.98)}
.cta.small{width:auto;padding:12px 28px;font-size:16px}
.trust{display:flex;gap:14px;justify-content:center;margin:18px 0 30px;flex-wrap:wrap;
  font-size:13px;color:var(--mut)}
.steps{display:flex;align-items:center;justify-content:center;gap:6px;margin:26px 0}
.step{flex:1;text-align:center;background:var(--bg);border-radius:12px;padding:16px 6px;font-size:13px}
.step-ico{font-size:26px;margin-bottom:6px}
.step small{color:var(--mut)}
.step-arrow{color:var(--blue);font-weight:700}
.honesty{font-size:12.5px;color:var(--mut);background:#f0f7ff;border:1px solid #dbeafe;
  border-radius:10px;padding:12px 14px;margin-top:24px}

/* ---------- topbar/tabs ---------- */
.topbar{display:flex;justify-content:space-between;align-items:center;font-weight:600;
  color:var(--mut);margin-bottom:18px;font-size:15px}
.back{cursor:pointer;color:var(--blue)}
.tabs{display:flex;background:var(--bg);border-radius:12px;padding:4px;margin-bottom:20px}
.tab{flex:1;border:none;background:none;padding:11px;border-radius:9px;font-size:15px;
  font-weight:600;color:var(--mut);cursor:pointer}
.tab.active{background:#fff;color:var(--blue);box-shadow:0 2px 6px rgba(0,0,0,.06)}

.read-text{background:#f0f7ff;border:1px solid #dbeafe;border-radius:14px;padding:20px;
  font-size:18px;line-height:2;letter-spacing:.5px}
.free-hint{background:var(--bg);border-radius:14px;padding:24px;font-size:16px;text-align:center}
.free-hint small{color:var(--mut)}

.mic-status{text-align:center;color:var(--mut);font-size:13px;margin:18px 0 8px}
.mic-status.warn{color:var(--warn)} .mic-status.ok{color:var(--green)}

.recorder{text-align:center;margin-top:10px}
#wave{width:100%;max-width:600px;height:120px;background:var(--bg);border-radius:14px}
.timer{font-size:34px;font-weight:800;font-variant-numeric:tabular-nums;margin:14px 0 6px;
  letter-spacing:1px}
.rec-btn{width:80px;height:80px;border-radius:50%;border:4px solid #fff;background:var(--red);
  box-shadow:0 6px 20px rgba(239,68,68,.4);cursor:pointer;display:inline-flex;align-items:center;
  justify-content:center;transition:transform .12s}
.rec-btn:active{transform:scale(.94)}
.rec-dot{width:30px;height:30px;background:#fff;border-radius:8px;display:block;transition:all .2s}
.rec-btn.recording{animation:pulse 1.1s infinite}
.rec-btn.recording .rec-dot{border-radius:50%;width:24px;height:24px}
@keyframes pulse{50%{box-shadow:0 6px 30px rgba(239,68,68,.7)}}
.rec-hint{color:var(--mut);font-size:13px;margin-top:12px}

.playback{margin-top:22px;text-align:center}
#audio-pre{width:100%}
.pb-actions{display:flex;gap:12px;justify-content:center;margin-top:14px}
.ghost{background:#fff;border:1.5px solid var(--line);color:var(--ink);padding:12px 24px;
  border-radius:12px;font-size:15px;font-weight:600;cursor:pointer}
.pipeline-note{font-size:11.5px;color:var(--mut);background:#fffbeb;border:1px solid #fde68a;
  border-radius:8px;padding:8px 10px;margin-top:18px;white-space:pre-wrap;display:none;font-family:monospace}

/* ---------- analyzing ---------- */
#page-analyzing{padding-top:80px;text-align:center}
.scan{height:140px;display:flex;align-items:center;justify-content:center;position:relative}
.scan-bar{width:120px;height:120px;border-radius:50%;border:5px solid #dbeafe;
  border-top-color:var(--blue);animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.analyze-steps{margin:36px 0}
.astep{font-size:16px;color:var(--mut);opacity:.4;margin:12px 0;transition:.4s}
.astep.active{opacity:1;color:var(--blue);font-weight:700}
.astep.done{opacity:.7;color:var(--green)}
.tip-card{background:#f0f7ff;border-radius:12px;padding:16px;font-size:14px;color:var(--ink);
  margin-top:20px;min-height:48px}

/* ---------- report ---------- */
.score-head{text-align:center;margin:6px 0 22px}
.overall{display:inline-block;font-size:15px;font-weight:800;color:#fff;background:var(--green);
  padding:6px 20px;border-radius:30px}
.headline{font-size:20px;font-weight:800;margin-top:14px}
.radar-wrap{text-align:center}
#radar{max-width:100%}
.radar-legend{font-size:12px;color:var(--mut);margin-top:4px}
.dot-you{display:inline-block;width:10px;height:10px;background:rgba(37,99,235,.5);border-radius:2px;vertical-align:middle}
.dot-real{color:var(--blue)} .dot-demo{color:#cbd5e1}
.sec-title{font-size:16px;font-weight:800;margin:30px 0 12px;padding-left:10px;
  border-left:4px solid var(--blue)}
.dim{border:1px solid var(--line);border-radius:14px;padding:16px;margin-bottom:12px}
.dim.demo{opacity:.62;background:#fafafa}
.dim-top{display:flex;justify-content:space-between;align-items:center}
.dim-name{font-weight:700;font-size:16px}
.badge{font-size:11px;font-weight:700;padding:3px 9px;border-radius:20px}
.badge.real{background:#dbeafe;color:var(--blue-d)}
.badge.demo{background:#f1f5f9;color:#94a3b8}
.dim-label{font-size:15px;font-weight:800;margin:4px 0}
.dim-bar{height:8px;background:var(--line);border-radius:6px;overflow:hidden;margin:8px 0}
.dim-bar > i{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,var(--green),var(--blue))}
.dim-bar.demo-bar > i{background:#cbd5e1}
.dim-desc{font-size:12.5px;color:var(--mut);margin-top:6px}
.badge.est{background:#fef3c7;color:#92400e}
/* continuous score bar (discrimination fix) */
.score-track{position:relative;height:10px;background:linear-gradient(90deg,#fecaca,#fde68a,#bbf7d0);
  border-radius:6px;margin:10px 0 2px}
.score-fill{position:absolute;top:0;left:0;height:100%;border-radius:6px;background:rgba(37,99,235,.12)}
.score-mark{position:absolute;top:-3px;width:4px;height:16px;background:#1e40af;border-radius:2px;
  transform:translateX(-2px);box-shadow:0 0 0 2px #fff}
.score-row{display:flex;justify-content:space-between;align-items:center}
.score-row small{font-size:11px;color:var(--mut)}
.score-num{font-weight:700;color:var(--ink)!important;font-size:13px!important}
.delta{font-size:11px;font-weight:700;padding:1px 5px;border-radius:6px;margin-left:4px}
.delta.up{background:#dcfce7;color:#15803d}
.delta.down{background:#fee2e2;color:#b91c1c}
.delta.flat{background:#f1f5f9;color:#64748b}
.est-val{font-size:18px;font-weight:800;color:var(--blue);margin:6px 0}
.dim.est{background:#fffdf7}
.sec-hint{font-size:12.5px;color:var(--mut);margin:-6px 0 12px}
#report-wave{width:100%;height:90px;background:var(--bg);border-radius:12px 12px 0 0;display:block}
.strip-row{display:flex;align-items:center;gap:8px;margin-top:4px}
.strip-label{font-size:11px;color:var(--mut);width:34px;text-align:right;flex:none}
.strip-row canvas{flex:1;height:22px;border-radius:4px;display:block}
.align-box{margin-top:16px;background:var(--bg);border-radius:12px;padding:14px}
.ghost.full{width:100%}
.align-hint{font-size:11.5px;color:var(--mut);margin:8px 0 0}
#align-result{margin-top:12px}
.align-words{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.aw{padding:5px 10px;border-radius:8px;font-size:15px;border:1px solid var(--line)}
.aw small{font-size:10px;color:var(--mut);display:block;text-align:center}
.aw.uncertain{opacity:.45;border-style:dashed}
/* suggestion courseware cards */
#suggestions{display:flex;flex-direction:column;gap:10px}
.sug{border:1px solid var(--line);border-radius:14px;overflow:hidden}
.sug-head{display:flex;align-items:center;gap:8px;padding:13px 15px;cursor:pointer;background:#fff}
.sug-head:hover{background:#fafbff}
.sug-title{font-weight:700;font-size:15px;flex:1}
.sug-tag{font-size:10px;font-weight:700;padding:2px 7px;border-radius:10px}
.sug-tag.strain{background:#fee2e2;color:#b91c1c}
.sug-tag.breath{background:#dbeafe;color:#1e40af}
.sug-tag.general{background:#dcfce7;color:#15803d}
.sug-tag.lvl{background:#f1f5f9;color:#64748b}
.sug-tag.guided{background:#fef3c7;color:#92400e}
.sug-caret{color:var(--mut);transition:transform .2s}
.sug.open .sug-caret{transform:rotate(90deg)}
.sug-body{display:none;padding:0 15px 15px;font-size:13.5px}
.sug.open .sug-body{display:block}
.sug-why{color:var(--mut);font-style:italic;margin:8px 0}
.sug-body ol{padding-left:20px;margin:8px 0}
.sug-body ol li{margin:5px 0}
.sug-cautions{background:#fffbeb;border:1px solid #fde68a;border-radius:8px;padding:8px 12px;margin:8px 0;font-size:12.5px}
.sug-meta{font-size:11px;color:var(--mut);margin-top:8px}
.sug-meta a{color:var(--blue)}
.sug-dur{font-size:12px;color:var(--mut);margin:4px 0}
.locked{background:#f8fafc;border:1px dashed var(--line);border-radius:10px;padding:13px;
  text-align:center;color:var(--mut);font-size:14px;margin-top:8px}
.report-actions{display:flex;gap:12px;justify-content:center;margin:26px 0 10px}
.feedback{text-align:center;font-size:14px;color:var(--mut);margin-top:10px}
.thumb{font-size:20px;background:none;border:none;cursor:pointer}
.disclaimer{font-size:11.5px;color:var(--mut);background:var(--bg);border-radius:10px;
  padding:12px;margin-top:20px}