:root{--bg:#f8fafc;--card:#fff;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--accent:#2563eb;--good:#16a34a;--bad:#dc2626;--warn:#d97706;--soft:#eff6ff;--shadow:0 12px 34px rgba(15,23,42,.10);--radius:24px}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink)}body{padding:env(safe-area-inset-top) 0 env(safe-area-inset-bottom)}button,input,select,textarea{font:inherit}.shell{max-width:430px;min-height:100dvh;margin:0 auto;display:flex;flex-direction:column;background:linear-gradient(#f8fafc,#eef2ff)}.top{padding:18px 18px 12px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:800;font-size:22px;letter-spacing:-.03em}.versionline{font-size:12px;color:var(--muted);font-weight:750;margin-top:2px}.pill{background:#e0e7ff;color:#3730a3;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:700}.main{flex:1;padding:0 14px 88px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin:12px 0}.quiznum{font-size:15px;color:var(--muted);font-weight:800;text-transform:uppercase;letter-spacing:.08em}.category{font-size:22px;line-height:1.14;font-weight:850;margin:12px 0;color:#1d4ed8}.qtext{font-size:22px;line-height:1.34;font-weight:650;margin:18px 0}.answer{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:18px;padding:14px;margin-top:14px;font-size:19px;line-height:1.35}.help{background:#fff7ed;border:1px solid #fed7aa;border-radius:16px;padding:12px;margin-top:12px;color:#7c2d12}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.btn{border:0;border-radius:17px;padding:14px 16px;font-weight:800;min-height:52px;background:#e2e8f0;color:#0f172a;cursor:pointer}.btn.primary{background:var(--accent);color:#fff}.btn.good{background:var(--good);color:#fff}.btn.bad{background:var(--bad);color:#fff}.btn.ghost{background:#f8fafc;border:1px solid var(--line)}.btn.full{width:100%}.btn:active{transform:translateY(1px)}.small{font-size:13px;color:var(--muted)}.progress{height:10px;background:#e2e8f0;border-radius:999px;overflow:hidden;margin:12px 0}.progress>span{display:block;height:100%;background:linear-gradient(90deg,#2563eb,#16a34a);border-radius:999px}.bottom{position:fixed;left:50%;bottom:0;transform:translateX(-50%);width:100%;max-width:430px;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-top:1px solid var(--line);padding:8px 10px calc(8px + env(safe-area-inset-bottom));display:grid;grid-template-columns:repeat(5,1fr);gap:4px}.tab{border:0;background:transparent;border-radius:14px;padding:9px 2px;color:var(--muted);font-size:12px;font-weight:750}.tab.active{background:#e0e7ff;color:#1d4ed8}.statgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.stat{background:#f8fafc;border:1px solid var(--line);border-radius:18px;padding:14px}.stat b{display:block;font-size:28px}.history{width:100%;border-collapse:separate;border-spacing:0 8px}.history tr{background:#fff}.history td,.history th{text-align:left;padding:12px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:14px}.history td:first-child,.history th:first-child{border-left:1px solid var(--line);border-radius:14px 0 0 14px}.history td:last-child,.history th:last-child{border-right:1px solid var(--line);border-radius:0 14px 14px 0}.grid100{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.quizcell{border:1px solid var(--line);border-radius:14px;background:#fff;padding:10px 4px;text-align:center;font-weight:800}.quizcell.new{background:#f8fafc}.quizcell.weak{background:#fee2e2}.quizcell.improving{background:#fef3c7}.quizcell.mastered{background:#dcfce7}.kv{display:flex;justify-content:space-between;gap:10px;border-bottom:1px solid var(--line);padding:10px 0}.switch{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:10px 0}select,input[type=file]{width:100%;border:1px solid var(--line);border-radius:16px;padding:13px;background:#fff}.mutedbox{background:#f8fafc;border:1px dashed #cbd5e1;border-radius:16px;padding:13px}.install li{margin:8px 0}.hidden{display:none!important}@media (prefers-color-scheme:dark){:root{--bg:#020617;--card:#0f172a;--ink:#f8fafc;--muted:#94a3b8;--line:#1e293b;--soft:#172554;--shadow:0 12px 34px rgba(0,0,0,.35)}.shell{background:linear-gradient(#020617,#111827)}.btn.ghost,.stat,.quizcell,select,input[type=file]{background:#111827;color:var(--ink)}.bottom{background:rgba(15,23,42,.9)}.answer{background:#052e16;border-color:#166534}.help{background:#431407;border-color:#9a3412;color:#fed7aa}.mutedbox{background:#111827;border-color:#334155}.history tr{background:#0f172a}.quizcell.weak{background:#450a0a}.quizcell.improving{background:#451a03}.quizcell.mastered{background:#052e16}}
.mini{border:1px solid var(--line);border-radius:10px;padding:7px 9px;font-size:12px;font-weight:800;background:#f8fafc;color:var(--ink);cursor:pointer}.mini.danger{color:#b91c1c;background:#fff1f2;border-color:#fecdd3}@media (prefers-color-scheme:dark){.mini{background:#111827}.mini.danger{background:#450a0a;border-color:#7f1d1d;color:#fecaca}}
.speechstatus{min-height:18px;margin:6px 2px 0;font-weight:700}