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input:focus{outline:none;border-color:var(--primary)}.answer-bar .btn{padding:18px 32px}.mode-toggle{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:8px}.mode-btn{display:flex;flex-direction:column;align-items:center;gap:8px;padding:18px;border:2px solid var(--line);background:#fff;border-radius:14px;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer}.mode-btn{transition:border-color .15s ease,background .15s ease,box-shadow .15s ease,transform .12s ease}.mode-btn.selected{border-color:var(--primary);background:var(--primary-soft);color:var(--primary-strong);box-shadow:0 6px 16px #4f7cff38;transform:translateY(-1px);animation:select-pop .28s var(--spring)}.mode-emoji{font-size:26px}.choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.choice-btn{display:flex;align-items:center;gap:12px;padding:18px 20px;border:2px solid var(--line);background:#fff;border-radius:14px;font-size:20px;font-weight:600;color:var(--ink);cursor:pointer;text-align:left}.choice-btn{transition:border-color .15s ease,background .15s ease,box-shadow .15s ease,transform .12s ease}.choice-btn.selected{border-color:var(--primary);background:var(--primary-soft);color:var(--primary-strong);box-shadow:0 6px 16px #4f7cff38;transform:translateY(-1px);animation:select-pop .28s var(--spring)}.choice-letter{width:34px;height:34px;flex:none;border-radius:50%;background:var(--bg);display:grid;place-items:center;font-size:16px;font-weight:700;color:var(--muted)}.choice-btn.selected .choice-letter{background:var(--primary);color:#fff}.timer{font-weight:800;font-variant-numeric:tabular-nums;color:var(--primary-strong);white-space:nowrap;background:var(--card);border:1px solid rgba(255,255,255,.7);box-shadow:var(--shadow-xs);border-radius:999px;padding:8px 16px;font-size:16px}.q-body{flex:1;display:flex;flex-direction:column;gap:4px}.q-feedback{font-size:14px;color:var(--muted)}.work-thumb{flex:none;width:54px;height:42px;border:1.5px solid var(--line);border-radius:8px;background:#fff;padding:0;overflow:hidden;cursor:pointer}.work-thumb img{width:100%;height:100%;object-fit:cover;display:block}.work-thumb.none{display:flex;align-items:center;justify-content:center;cursor:default;opacity:.45;font-size:19px;border-style:dashed;background:transparent}.drawing-modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#141e378c;display:grid;place-items:center;padding:24px;z-index:50}.drawing-modal-inner{background:#fff;border-radius:16px;padding:16px;max-width:720px;width:100%}.drawing-modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-weight:700}.drawing-modal-inner img{width:100%;border:1px solid var(--line);border-radius:12px;background:#fff}.status-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#141e3773;display:grid;place-items:center;padding:24px;z-index:100}.status-card{background:#fff;border-radius:18px;padding:30px 28px;width:100%;max-width:380px;text-align:center;box-shadow:var(--shadow)}.status-emoji{font-size:44px}.status-card h2{margin:10px 0 6px}.status-card .btn{margin-top:18px;min-width:140px}.resume-card{width:100%;max-width:400px;text-align:center;animation:rise .32s var(--spring) both}.resume-card h2{margin:10px 0 6px}.resume-actions{display:flex;gap:12px;margin-top:20px}.resume-actions .btn{flex:1}.resume-actions .btn.ghost{background:var(--bg)}.gate-modal{background:#fff;border-radius:18px;padding:28px;width:100%;max-width:380px;text-align:center}.gate-lock{font-size:40px}.gate-modal h2{margin:8px 0 6px}.gate-modal input{width:100%;font-size:18px;padding:14px;border:1.5px solid var(--line);border-radius:12px;margin:16px 0 8px}.gate-modal input:focus{outline:none;border-color:var(--primary)}.gate-actions{display:flex;gap:12px;margin-top:8px}.gate-actions .btn{flex:1}.review-btn{flex:none;border:none;border-radius:10px;padding:8px 14px;font-size:14px;font-weight:700;color:#fff;cursor:pointer}.review-btn.correct{background:var(--good)}.review-btn.incorrect{background:var(--bad)}.result-item{list-style:none}.steps-toggle{flex:none;border:1.5px solid var(--line);background:#fff;border-radius:10px;padding:8px 12px;font-size:13px;font-weight:700;color:var(--muted);cursor:pointer;white-space:nowrap}.steps-panel{background:#fff;border:1px solid var(--line);border-radius:12px;margin-top:8px;padding:16px 18px}.steps-panel .steps{margin:0;padding-left:20px;line-height:1.6;font-size:16px}.steps-panel .steps li{margin-bottom:6px}.steps-panel .final-answer{font-size:17px;margin-top:12px;padding-top:10px}.review-on{margin:12px 0 0;font-weight:600;color:var(--good)}.score-banner .btn.primary{margin-top:14px}.answer-summary{display:flex;flex-direction:column;gap:10px;margin:16px 0}.summary-row{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-radius:12px;background:var(--bg)}.summary-row span{color:var(--muted);font-weight:600}.summary-row strong{font-size:20px}.summary-row.good{background:var(--good-bg)}.summary-row.good strong{color:var(--good)}.summary-row.bad{background:var(--bad-bg)}.summary-row.bad strong{color:var(--bad)}.work-card .work-image{width:100%;border:1.5px solid var(--line);border-radius:12px;background:#fff;display:block}.explanation-card .steps{margin:0;padding-left:22px;line-height:1.7;font-size:18px}.explanation-card .steps li{margin-bottom:8px}.final-answer{margin:16px 0 0;padding-top:14px;border-top:1px solid var(--line);font-size:20px}.final-answer strong{color:var(--primary)}.stats-card{display:flex;justify-content:space-around;text-align:center;margin-bottom:18px}.stat strong{display:block;font-size:32px;font-weight:850;letter-spacing:-.02em;background:var(--primary-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:var(--primary)}.stat span{color:var(--muted);font-size:14px}.needs-work{margin-bottom:18px}.needs-work h3{margin:0 0 10px}.needs-work.good{background:var(--good-bg)}.area-chips{display:flex;flex-wrap:wrap;gap:8px}.area-chip{background:var(--bad-bg);color:var(--bad);font-weight:700;font-size:15px;padding:8px 14px;border-radius:999px}.history-list{display:flex;flex-direction:column;gap:12px}.history-item{padding:0;overflow:hidden}.history-head{width:100%;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:18px 22px;background:transparent;border:none;cursor:pointer;text-align:left;font-size:16px;transition:background .15s ease}@media (hover: hover){.history-head:hover{background:var(--primary-soft)}}.history-detail{animation:rise .3s var(--ease-out) both}.history-head p{margin:4px 0 0}.history-score{display:flex;align-items:center;gap:12px}.score-pill{background:var(--primary-grad);color:#fff;font-weight:800;padding:6px 14px;border-radius:999px;box-shadow:0 4px 10px #5b63f047}.chevron{color:var(--muted);font-size:13px}.history-detail{padding:0 16px 16px}.empty-state{text-align:center;display:flex;flex-direction:column;gap:14px;align-items:center;padding:40px 22px;color:var(--muted);font-weight:600}