:root{--la-ink:#17324d;--la-muted:#64748b;--la-line:#dbe5ef;--la-blue:#2563eb;--la-blue-soft:#eaf2ff;--la-bg:#f3f7fb;--la-green:#0f9f6e;--la-amber:#f4b740;--la-danger:#dc3545}*{box-sizing:border-box}body.la-public{margin:0;min-height:100vh;background:var(--la-bg);color:var(--la-ink);font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif}.la-shell{min-height:100vh}.la-topbar{height:72px;padding:0 24px;background:#fff;border-bottom:1px solid var(--la-line);display:flex;align-items:center;justify-content:space-between;gap:16px;position:sticky;top:0;z-index:10}.la-brand{display:flex;align-items:center;gap:12px;font-weight:800}.la-logo{width:40px;height:40px;border-radius:13px;background:var(--la-blue);color:#fff;display:grid;place-items:center;font-size:20px}.la-brand small{display:block;color:var(--la-muted);font-weight:500;font-size:12px}.la-timer{min-width:108px;padding:9px 14px;border:1px solid var(--la-line);border-radius:14px;background:#f8fbff;text-align:center;font-weight:800;font-variant-numeric:tabular-nums}.la-timer small{display:block;color:var(--la-muted);font-size:10px;font-weight:500}.la-progress{height:5px;background:#e7eef6}.la-progress span{display:block;height:100%;background:var(--la-blue);transition:width .25s}.la-stage{max-width:960px;margin:0 auto;padding:34px 24px 48px}.la-card{background:#fff;border:1px solid var(--la-line);border-radius:24px;padding:28px;box-shadow:0 10px 30px rgba(39,76,119,.07)}.la-card h1,.la-card h2{margin-top:0}.la-hero{text-align:center;padding:42px 28px}.la-badge{display:inline-flex;padding:7px 12px;border-radius:999px;background:#fff1c4;color:#785a00;font-size:13px;font-weight:800;margin-bottom:14px}.la-hero h1{font-size:32px;margin-bottom:10px}.la-help{color:var(--la-muted);line-height:1.75}.la-grade-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:680px;margin:28px auto}.la-choice-card{border:2px solid var(--la-line);background:#fff;border-radius:18px;padding:20px;cursor:pointer;text-align:left;color:var(--la-ink);transition:.18s}.la-choice-card:hover{transform:translateY(-2px);border-color:#9abaf0}.la-choice-card.active{border-color:var(--la-blue);background:var(--la-blue-soft);box-shadow:0 0 0 3px rgba(37,99,235,.08)}.la-choice-card strong{display:block;font-size:19px}.la-choice-card span{color:var(--la-muted);font-size:13px}.la-form-panel{max-width:560px;margin:0 auto}.la-form-label{display:block;font-weight:800;margin:14px 0 7px}.la-input{width:100%;height:52px;border:1px solid var(--la-line);border-radius:14px;padding:0 15px;font:inherit;color:var(--la-ink);background:#fff}.la-input:focus{outline:3px solid rgba(37,99,235,.12);border-color:var(--la-blue)}.la-btn{border:0;border-radius:14px;padding:13px 22px;background:#e8eef5;color:var(--la-ink);font-weight:800;cursor:pointer;min-height:48px}.la-btn-primary{background:var(--la-blue);color:#fff}.la-btn-danger{background:var(--la-danger);color:#fff}.la-btn:disabled{opacity:.5;cursor:not-allowed}.la-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:24px}.la-actions-end{justify-content:flex-end}.la-error{display:none;margin-top:14px;padding:12px 14px;border-radius:12px;background:#fff0f0;color:#a61b29;text-align:left}.la-error.show{display:block}.la-section-kicker{font-size:13px;color:var(--la-blue);font-weight:900;margin-bottom:8px}.la-question{font-size:21px;line-height:1.65;font-weight:800;margin:10px 0 20px}.la-qcount{font-size:13px;color:var(--la-muted);font-weight:700}.la-pills{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}.la-pill{padding:7px 11px;border-radius:999px;background:#edf2f7;color:var(--la-muted);font-size:12px;font-weight:800}.la-pill.done{background:#dff7ed;color:#18724e}.la-pill.current{background:var(--la-blue);color:#fff}.la-options{display:grid;gap:12px}.la-option{width:100%;border:2px solid var(--la-line);border-radius:16px;background:#fff;padding:16px 18px;text-align:left;cursor:pointer;font-weight:750;color:var(--la-ink);min-height:56px}.la-option:hover,.la-option.selected{border-color:var(--la-blue);background:var(--la-blue-soft)}.la-scale{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.la-scale .la-option{text-align:center;padding:14px 8px;font-size:14px}.la-scale .la-option b{display:block;font-size:19px}.la-grid{display:grid;grid-template-columns:repeat(8,minmax(42px,1fr));gap:8px}.la-token{border:2px solid var(--la-line);background:#fff;border-radius:12px;min-height:48px;font:800 17px Consolas,monospace;color:var(--la-ink);cursor:pointer}.la-token.marked{background:var(--la-blue);border-color:var(--la-blue);color:#fff;transform:scale(.96)}.la-flanker{font:900 42px Consolas,monospace;letter-spacing:0;text-align:center;background:#f7faff;border:1px solid var(--la-line);border-radius:20px;padding:30px 12px;margin:16px 0 22px;display:flex;align-items:center;justify-content:center;gap:clamp(4px,1.4vw,12px);line-height:1.1;white-space:nowrap;text-wrap:nowrap;overflow:hidden}.la-two{display:grid;grid-template-columns:1fr 1fr;gap:14px}.la-direction{font-size:20px;text-align:center}.la-memory-screen{min-height:240px;display:grid;place-items:center;border:1px solid var(--la-line);background:#f8fbff;border-radius:20px;margin:14px 0}.la-digit{font-size:76px;font-weight:900;color:var(--la-blue)}.la-word{font-size:42px;font-weight:900}.la-entry{min-height:56px;border-radius:14px;background:#eef5ff;border:1px solid #cfe0fa;display:flex;align-items:center;justify-content:center;font-size:25px;font-weight:900;letter-spacing:8px;margin-bottom:12px}.la-keypad{display:grid;grid-template-columns:repeat(5,1fr);gap:9px}.la-key{border:1px solid var(--la-line);border-radius:12px;background:#fff;min-height:48px;font-weight:900;font-size:18px;cursor:pointer}.la-key.wide{grid-column:span 2}.la-key.submit{grid-column:span 3;background:var(--la-blue);color:#fff;border-color:var(--la-blue)}.la-word-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.la-word-study-head{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#fff7d6;border:1px solid #f4d36b;border-radius:16px;padding:14px 16px;margin:14px 0 16px;color:#7a5600;font-weight:800}.la-word-study-head strong{font-size:22px;font-variant-numeric:tabular-nums}.la-word-grid-study{margin-top:10px}.la-word-study{border:2px solid #cfe0fa;border-radius:16px;background:linear-gradient(180deg,#fff,#f5f9ff);padding:18px 10px;text-align:center;font-size:24px;font-weight:900;color:var(--la-ink);box-shadow:0 8px 18px rgba(37,99,235,.06)}.la-word-choice{border:2px solid var(--la-line);border-radius:14px;background:#fff;padding:13px 8px;cursor:pointer;font-weight:800;color:var(--la-ink)}.la-word-choice.selected{border-color:var(--la-blue);background:var(--la-blue-soft)}.la-saving{display:none;color:var(--la-muted);font-size:13px}.la-saving.show{display:block}.la-complete{text-align:center;padding:50px 26px}.la-complete-icon{width:82px;height:82px;border-radius:50%;background:#dff7ed;color:var(--la-green);display:grid;place-items:center;font-size:40px;margin:0 auto 20px}.la-info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}.la-info{background:#f8fbff;border:1px solid var(--la-line);border-radius:16px;padding:16px}.la-info small{display:block;color:var(--la-muted);margin-bottom:4px}.la-info strong{font-size:17px}@media(max-width:700px){.la-stage{padding:20px 12px 34px}.la-card{padding:20px;border-radius:18px}.la-topbar{padding:0 14px}.la-brand>div:last-child{font-size:14px}.la-grade-grid{gap:8px}.la-choice-card{padding:14px}.la-grid{grid-template-columns:repeat(6,minmax(38px,1fr));gap:6px}.la-token{min-height:43px}.la-scale{grid-template-columns:1fr 1fr}.la-word-grid{grid-template-columns:repeat(3,1fr)}.la-flanker{font-size:clamp(28px,9vw,34px);gap:clamp(3px,1.5vw,7px)}.la-info-grid{grid-template-columns:1fr}.la-hero h1{font-size:26px}}

.la-scale .la-option strong{display:block;font-size:14px;margin-top:3px}.la-scale .la-option small{display:block;color:var(--la-muted);font-size:11px;font-weight:500;line-height:1.35;margin-top:5px}.la-scale .la-option.selected small{color:#375a8c}
.la-voice-card{max-width:720px;margin:0 auto}.la-audio-panel{display:flex;align-items:center;gap:14px;background:#f8fbff;border:1px solid var(--la-line);border-radius:18px;padding:16px;margin-top:20px}.la-audio-icon{width:46px;height:46px;border-radius:50%;background:var(--la-blue);color:#fff;display:grid;place-items:center;font-size:18px;font-weight:900;flex:0 0 auto}.la-audio-panel strong{display:block;font-size:17px}.la-audio-panel small{display:block;color:var(--la-muted);line-height:1.55;margin-top:3px}