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18px;display:flex;position:sticky;top:0}.grab{background:var(--line);border-radius:2px;width:40px;height:4px;margin:0 auto}.sheet-close{background:var(--elev);min-width:44px;min-height:44px;color:var(--ink-soft);cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;font-size:15px;line-height:1;display:inline-flex;position:absolute;top:50%;right:12px;transform:translateY(-50%)}.sheet-close:active{background:var(--line);color:var(--ink)}.sheet h3{overflow-wrap:anywhere;margin:0 0 16px;font-size:21px;line-height:1.3}.row-2{grid-template-columns:repeat(auto-fit,minmax(148px,1fr));gap:12px;display:grid}.row-2>*{min-width:0}.row-2 input,.row-2 select,.row-2 textarea{width:100%;min-width:0;max-width:100%}.sheet-actions{gap:10px;margin-top:10px;display:flex}.sheet-actions .btn{flex:1}.swatches{flex-wrap:wrap;gap:9px;display:flex}.sw{border:2px solid #0000;border-radius:10px;width:36px;height:36px}.sw.on{border-color:var(--ink);transform:scale(1.06)}.quiz-progress{color:var(--muted);margin-bottom:10px;font-size:12.5px}.quiz-question{margin-bottom:16px;font-size:16px;font-weight:600;line-height:1.45}.quiz-options{flex-direction:column;gap:8px;margin-bottom:12px;display:flex}.quiz-option{text-align:left;border:1px solid var(--line);background:var(--surface-2);color:var(--ink);border-radius:12px;padding:13px 14px;font-size:14px}.quiz-option.correct{border-color:var(--teal);background:var(--teal-wash);color:var(--teal-txt)}.quiz-option.incorrect{border-color:var(--coral);background:var(--coral-wash);color:var(--coral-txt)}.quiz-short-answer{background:var(--surface-2);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;padding:13px 14px;font-size:14px}.quiz-explanation{color:var(--ink-soft);margin-bottom:16px;font-size:13px;line-height:1.55}.quiz-nav{gap:10px;display:flex}.quiz-nav .btn{flex:1}.quiz-score{font-family:var(--font-display);margin-bottom:4px;font-size:32px}.quiz-review{flex-direction:column;gap:10px;max-height:50vh;margin:16px 0;display:flex;overflow-y:auto}.quiz-review-item{border:1px solid var(--line);background:var(--surface-2);border-radius:13px;padding:13px 14px}.quiz-review-item.correct{border-color:var(--teal-line)}.quiz-review-item.incorrect{border-color:var(--coral)}.quiz-review-item.skipped{border-color:var(--line)}.quiz-review-q{margin-bottom:6px;font-size:14px;font-weight:600}.quiz-review-a{color:var(--ink-soft);font-size:13px;line-height:1.5}.quiz-review-a b{color:var(--ink)}.quiz-review-badge{border-radius:99px;margin-bottom:6px;padding:2px 8px;font-size:11px;font-weight:700;display:inline-block}.quiz-review-badge.correct{background:var(--teal-wash);color:var(--teal-txt)}.quiz-review-badge.incorrect{background:var(--coral-wash);color:var(--coral-txt)}.quiz-review-badge.skipped{background:var(--elev);color:var(--muted)}.quiz-all-correct{text-align:center;color:var(--teal-txt);background:var(--teal-wash);border:1px solid var(--teal-line);border-radius:12px;margin-bottom:10px;padding:11px 14px;font-size:13.5px;font-weight:600}.quiz-retry-tag{letter-spacing:.05em;text-transform:uppercase;color:var(--teal-txt);background:var(--teal-wash);border-radius:99px;margin-right:8px;padding:2px 8px;font-size:10px;font-weight:700;display:inline-block}.major-badges{flex-wrap:wrap;gap:6px;margin-top:7px;display:flex}.major-badge{letter-spacing:.04em;text-transform:uppercase;color:var(--teal-txt);background:var(--teal-wash);border:1px solid var(--teal-line);border-radius:99px;padding:3px 9px;font-size:10px;font-weight:700}.report-box{border-top:1px solid var(--line-soft);margin-top:16px;padding-top:12px}.report-trigger{min-height:34px;color:var(--muted);cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:none;padding:6px 0;font-size:12.5px}.report-trigger:active{color:var(--coral-txt)}.report-q{color:var(--ink-soft);margin-bottom:8px;font-size:12.5px;display:block}.report-actions{flex-wrap:wrap;gap:8px;display:flex}.report-done{color:var(--teal-txt);padding:6px 0;font-size:12.5px;display:block}.major-retry{cursor:pointer;background:0 0;border:none;padding:0}.energy-badge{border:1px solid var(--teal-line);background:var(--teal-wash);min-height:34px;color:var(--teal-txt);font-variant-numeric:tabular-nums;cursor:pointer;-webkit-tap-highlight-color:transparent;border-radius:99px;align-items:center;gap:5px;padding:5px 12px 5px 10px;font-size:13px;font-weight:700;display:inline-flex}.energy-badge:active{transform:scale(.96)}.energy-ico{font-size:13px;line-height:1}.energy-badge.is-low{border-color:var(--amber);background:var(--amber-wash);color:var(--amber)}.energy-badge.is-empty{border-color:var(--coral);background:var(--coral-wash);color:var(--coral-txt)}.ref-head{align-items:center;gap:11px;margin-bottom:4px;display:flex}.ref-head h3{margin:0}.ref-spark{background:var(--teal-wash);border:1px solid var(--teal-line);border-radius:50%;flex:none;justify-content:center;align-items:center;width:40px;height:40px;font-size:19px;display:inline-flex}.ref-lead{color:var(--ink-soft);margin:10px 0 0;font-size:13.5px;line-height:1.6}.ref-offer{background:var(--teal-wash);border:1px solid var(--teal-line);color:var(--ink);border-radius:13px;margin-top:14px;padding:13px 15px;font-size:14px;line-height:1.6}.ref-offer b{color:var(--teal-txt)}.ref-progress{gap:8px;margin-top:16px;display:flex}.ref-dot{background:var(--elev);border:1px solid var(--line);border-radius:99px;flex:1;height:6px}.ref-dot.on{background:linear-gradient(90deg, #5fd8c7, var(--teal));border-color:#0000}.ref-progress-label{color:var(--muted);margin-top:8px;font-size:12.5px}.ref-code{color:var(--ink-soft);margin-top:4px;font-size:13px}.ref-code b{font-family:var(--font-display);letter-spacing:.14em;color:var(--teal-txt)}.markdown-block{color:var(--ink-soft);font-size:13.5px;line-height:1.6}.markdown-block h1,.markdown-block h2,.markdown-block h3{font-family:var(--font-body);color:var(--ink);margin:14px 0 6px;font-size:14.5px;font-weight:700}.markdown-block h1:first-child,.markdown-block h2:first-child,.markdown-block h3:first-child{margin-top:0}.markdown-block p{margin:0 0 10px}.markdown-block p:last-child{margin-bottom:0}.markdown-block b,.markdown-block strong{color:var(--teal-txt);font-weight:700}.markdown-block ul,.markdown-block ol{margin:0 0 10px;padding-left:20px}.markdown-block li{margin-bottom:4px}.markdown-block code{background:var(--surface-2);border-radius:5px;padding:1px 5px;font-size:12.5px}.term-explain-btn{z-index:90;white-space:nowrap;background:linear-gradient(160deg, #5fd8c7, var(--teal));color:#07130f;border-radius:99px;padding:9px 14px;font-size:12.5px;font-weight:700;animation:.18s rise;position:fixed;transform:translate(-50%,-120%);box-shadow:0 10px 24px #35b5a366}.term-explain-btn:active{transform:translate(-50%,-120%)scale(.95)}.term-explain-term{color:var(--teal-txt);margin-bottom:10px;font-size:13px;font-weight:600}.guide-screen{min-height:100dvh;padding:calc(20px + env(safe-area-inset-top,0px)) 20px calc(20px + env(safe-area-inset-bottom,0px));flex-direction:column;max-width:480px;margin:0 auto;animation:.32s fade;display:flex}.guide-skip{color:var(--muted);align-self:flex-end;padding:8px 4px;font-size:13px;font-weight:600}.guide-dots{justify-content:center;gap:7px;margin:6px 0 8px;display:flex}.guide-dot{background:var(--line);border-radius:99px;width:7px;height:7px;transition:background .2s,width .2s}.guide-dot.on{background:var(--teal);border-radius:99px;width:20px}.guide-content{text-align:center;flex-direction:column;flex:1;align-items:center;padding-top:12px;animation:.4s cubic-bezier(.2,.8,.2,1) rise;display:flex}.guide-emoji{margin-bottom:14px;font-size:44px}.guide-title{margin-bottom:10px;font-size:24px}.guide-text{color:var(--ink-soft);max-width:360px;margin:18px 0 4px;font-size:14.5px;line-height:1.6}.guide-nav{gap:10px;margin-top:18px;display:flex}.guide-nav .btn{flex:1}.guide-illust{background:var(--surface);border:1px solid var(--line);border-radius:20px;width:100%;padding:20px 16px;position:relative;box-shadow:0 12px 30px #00000047}.guide-caption{color:var(--teal-txt);margin-top:12px;font-size:12.5px;font-weight:600}.guide-arrow{color:var(--teal);text-align:center;margin-top:6px;font-size:22px;animation:1.4s ease-in-out infinite guideBounce}.guide-arrow.up{transform:rotate(180deg)}@keyframes guideBounce{0%,to{transform:translateY(0)}50%{transform:translateY(5px)}}.guide-arrow.up{animation-name:guideBounceUp}@keyframes guideBounceUp{0%,to{transform:rotate(180deg)translateY(0)}50%{transform:rotate(180deg)translateY(5px)}}.mock-nav{background:#0c120f99;border-radius:14px;justify-content:space-around;padding:10px 4px;display:flex}.mock-nav-item{color:var(--muted);flex-direction:column;align-items:center;gap:3px;font-size:10px;font-weight:600;display:flex}.mock-nav-item span{font-size:9px}.mock-nav-item.on{color:var(--teal-txt)}.mock-card{background:var(--surface-2);border:1px solid var(--line);text-align:left;border-radius:14px;padding:12px}.mock-row{border-bottom:1px solid var(--line-soft);align-items:center;gap:10px;padding:8px 2px;font-size:12.5px;display:flex}.mock-row:last-child{border-bottom:none}.mock-dot{background:var(--teal);border-radius:3px;flex:none;width:8px;height:8px}.mock-fab{background:var(--teal);color:#07130f;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;margin-left:auto;font-size:20px;font-weight:700;display:flex;box-shadow:0 8px 18px #35b5a366}.mock-folder-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.mock-folder{background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:10px;font-size:20px}.mock-folder .fname{color:var(--ink-soft);margin-top:6px;font-size:11px;font-weight:600;display:block}.mock-chips{gap:6px;display:flex;overflow:hidden}.mock-chip{white-space:nowrap;border:1px solid var(--line);color:var(--ink-soft);border-radius:99px;padding:5px 10px;font-size:10.5px;font-weight:600}.mock-chip.on{background:var(--teal);color:#07130f;border-color:var(--teal)}.mock-ai-btns{gap:8px;display:flex}.mock-ai-btn{text-align:center;border:1px solid var(--line);color:var(--teal-txt);background:var(--surface-2);border-radius:10px;flex:1;padding:9px 6px;font-size:11.5px;font-weight:600}.mock-search{background:var(--surface-2);border:1px solid var(--line);color:var(--muted);border-radius:12px;align-items:center;gap:8px;padding:9px 12px;font-size:12px;display:flex}.setup-screen{max-width:520px;min-height:100dvh;padding-bottom:calc(24px + env(safe-area-inset-bottom));flex-direction:column;justify-content:center;margin:0 auto;display:flex}.setup-head{margin-bottom:18px}.setup-lead{color:var(--ink-soft);margin:10px 0 0;font-size:14px;line-height:1.6}.setup-form .field:last-of-type{margin-bottom:18px}.setup-form .btn.block{margin-top:4px}.update-prompt{top:env(safe-area-inset-top,0px);z-index:100;background:var(--surface-2);border-bottom:1px solid var(--teal-line);color:var(--ink-soft);justify-content:center;align-items:center;gap:12px;padding:10px 16px;font-size:13px;animation:.3s rise;display:flex;position:fixed;left:0;right:0}