.pt-shell{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);width:100%;height:100%;min-height:600px;display:flex;overflow:hidden}.pt-scene{background:#0e1116;flex:auto;min-width:0;min-height:600px;position:relative}.pt-scene-overlay{border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--muted-strong);letter-spacing:.08em;text-transform:uppercase;-webkit-backdrop-filter:blur(8px)saturate(1.2);background:#14171bd9;padding:6px 10px;font-size:.65rem;position:absolute;top:12px;left:12px}.pt-hud{background:var(--surface-alt);border-left:1px solid var(--border);scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent;flex-direction:column;flex:0 0 380px;gap:12px;max-height:100%;padding:14px 16px;display:flex;overflow-y:auto}.pt-hud::-webkit-scrollbar{width:6px}.pt-hud::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:3px}.pt-hud::-webkit-scrollbar-track{background:0 0}@media (width<=980px){.pt-shell{flex-direction:column}.pt-hud{border-left:0;border-top:1px solid var(--border);flex:auto;width:100%;max-height:none}.pt-scene{min-height:480px}}.pt-card{background:linear-gradient(180deg, var(--surface) 0%, var(--surface-alt) 100%);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-card);transition:transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s var(--ease);padding:12px 14px}.pt-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-1px)}.pt-card-header{justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:10px;display:flex}.pt-card-title{letter-spacing:.1em;text-transform:uppercase;color:var(--muted-strong);margin:0;font-size:.7rem;font-weight:700}.pt-card-subtitle{color:var(--muted);margin:0;font-size:.72rem;line-height:1.4}.pt-card-badge{background:var(--surface-soft);border:1px solid var(--border);color:var(--muted-strong);font-feature-settings:"tnum";letter-spacing:.04em;border-radius:999px;align-items:center;padding:3px 8px;font-size:.65rem;font-weight:600;display:inline-flex}.pt-library-grid{grid-template-columns:repeat(2,1fr);gap:8px;display:grid}.pt-library-button{background:var(--surface-soft);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);text-align:left;cursor:pointer;font:inherit;transition:transform .16s var(--ease), border-color .16s var(--ease), background .16s var(--ease), box-shadow .16s var(--ease);grid-template-columns:1fr auto;align-items:center;gap:10px;padding:10px 12px;display:grid;position:relative}.pt-library-button:hover{border-color:var(--accent);background:var(--accent-soft);transform:translateY(-1px);box-shadow:0 4px 14px #f59e0b14}.pt-library-button:focus-visible{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.pt-library-button.is-pulsing{animation:pt-pulse .38s var(--ease)}@keyframes pt-pulse{0%{box-shadow:0 0 0 0 var(--accent-muted);border-color:var(--accent)}60%{box-shadow:0 0 0 6px #f59e0b00}to{box-shadow:0 0 #f59e0b00}}.pt-library-button-text{flex-direction:column;align-items:flex-start;gap:2px;min-width:0;display:flex}.pt-library-rating{color:var(--accent-strong);font-feature-settings:"tnum";letter-spacing:-.02em;font-size:1.4rem;font-weight:800;line-height:1}.pt-library-poles{letter-spacing:.08em;color:var(--muted);text-transform:uppercase;font-size:.65rem;font-weight:600}.pt-library-icon{color:var(--muted-strong);opacity:.85;flex:none;display:inline-flex}.pt-empty{border:1px dashed var(--border);border-radius:var(--radius-sm);color:var(--muted);background:#ffffff05;align-items:center;gap:10px;padding:14px 12px;font-size:.82rem;line-height:1.4;display:flex}.pt-empty-icon{background:var(--surface-soft);width:22px;height:22px;color:var(--accent-strong);border-radius:50%;flex:none;justify-content:center;align-items:center;font-size:.85rem;font-weight:700;display:inline-flex}.pt-circuit-list{flex-direction:column;gap:10px;display:flex}.pt-circuit{background:var(--surface-soft);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:border-color .18s var(--ease), background .18s var(--ease), box-shadow .18s var(--ease), transform .18s var(--ease);padding:10px 12px}.pt-circuit:hover{border-color:var(--border-strong)}.pt-circuit.is-selected{border-color:var(--accent);background:var(--accent-soft);box-shadow:var(--shadow-glow)}.pt-circuit-top{align-items:center;gap:8px;display:flex}.pt-slot-pill{background:var(--surface);border:1px solid var(--border);min-width:38px;color:var(--muted-strong);letter-spacing:.02em;font-feature-settings:"tnum";border-radius:999px;justify-content:center;align-items:center;padding:2px 8px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:.7rem;font-weight:600;display:inline-flex}.pt-circuit-rating{color:var(--accent-strong);font-feature-settings:"tnum";letter-spacing:-.01em;font-size:1rem;font-weight:800}.pt-pole-tag{border:1px solid var(--accent-muted);color:var(--accent-strong);letter-spacing:.06em;background:#f59e0b1a;border-radius:4px;align-items:center;padding:1px 6px;font-size:.6rem;font-weight:700;display:inline-flex}.pt-status-dot{border-radius:50%;flex:none;width:8px;height:8px;margin-left:auto}.pt-status-dot.is-error{background:var(--danger);box-shadow:0 0 8px #ef535099}.pt-status-dot.is-warn{background:var(--accent-strong);box-shadow:0 0 8px #fbbf2480}.pt-circuit-name{width:100%;color:var(--text);font:inherit;transition:border-color .16s var(--ease);background:0 0;border:0;border-bottom:1px solid #0000;outline:none;margin-top:8px;padding:4px 0 5px;font-size:.85rem}.pt-circuit-name::placeholder{color:var(--muted)}.pt-circuit-name:hover{border-bottom-color:var(--border-strong)}.pt-circuit-name:focus{border-bottom-color:var(--accent)}.pt-field-row{grid-template-columns:1fr 1fr auto;align-items:center;gap:8px;margin-top:10px;display:grid}.pt-field{flex-direction:column;gap:3px;min-width:0;display:flex}.pt-field-label{letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-size:.6rem;font-weight:600}.pt-select{appearance:none;background-color:var(--surface);border:1px solid var(--border);width:100%;color:var(--text);font:inherit;font-feature-settings:"tnum";cursor:pointer;transition:border-color .16s var(--ease), box-shadow .16s var(--ease);background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='none' stroke='%239aa5b4' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' d='M1 1l4 4 4-4'/%3E%3C/svg%3E");background-position:right 8px center;background-repeat:no-repeat;background-size:10px 6px;border-radius:6px;padding:6px 24px 6px 8px;font-size:.78rem}.pt-select:hover{border-color:var(--border-strong)}.pt-select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.pt-select option{background:var(--surface);color:var(--text)}.pt-amp-wrap{align-items:center;display:flex;position:relative}.pt-amp-input{background:var(--surface);border:1px solid var(--border);width:100%;color:var(--text);font:inherit;font-feature-settings:"tnum";text-align:right;transition:border-color .16s var(--ease), box-shadow .16s var(--ease);border-radius:6px;outline:none;padding:6px 22px 6px 8px;font-size:.78rem;font-weight:700}.pt-amp-input:hover{border-color:var(--border-strong)}.pt-amp-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.pt-amp-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.pt-amp-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.pt-amp-input[type=number]{-moz-appearance:textfield}.pt-amp-suffix{color:var(--muted);pointer-events:none;font-size:.7rem;font-weight:600;position:absolute;top:50%;right:8px;transform:translateY(-50%)}.pt-switch{cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;gap:6px;display:inline-flex;position:relative}.pt-switch-input{opacity:0;pointer-events:none;width:1px;height:1px;position:absolute}.pt-switch-track{background:var(--border-strong);width:36px;height:20px;transition:background .2s var(--ease);border-radius:999px;flex:none;position:relative}.pt-switch-knob{width:16px;height:16px;transition:transform .2s var(--ease), background .2s var(--ease);background:#f5f7fa;border-radius:50%;position:absolute;top:2px;left:2px;box-shadow:0 1px 3px #0006}.pt-switch-input:checked+.pt-switch-track{background:var(--accent)}.pt-switch-input:checked+.pt-switch-track .pt-switch-knob{transform:translate(16px)}.pt-switch-input:focus-visible+.pt-switch-track{box-shadow:0 0 0 3px var(--accent-soft)}.pt-switch-track.is-tripped{background:var(--danger)}.pt-switch-label{letter-spacing:.08em;text-transform:uppercase;color:var(--muted-strong);font-feature-settings:"tnum";font-size:.65rem;font-weight:700}.pt-switch-label.is-on{color:var(--accent-strong)}.pt-switch-label.is-tripped{color:var(--danger)}.pt-actions{justify-content:flex-end;gap:6px;margin-top:10px;display:flex}.pt-icon-btn{border:1px solid var(--border);width:26px;height:26px;color:var(--muted-strong);font:inherit;cursor:pointer;transition:border-color .16s var(--ease), color .16s var(--ease), background .16s var(--ease);background:0 0;border-radius:6px;justify-content:center;align-items:center;padding:0;font-size:.85rem;line-height:1;display:inline-flex}.pt-icon-btn:hover{border-color:var(--border-strong);color:var(--text);background:#ffffff08}.pt-icon-btn:focus-visible{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.pt-icon-btn.is-danger:hover{border-color:var(--danger);color:var(--danger);background:#ef535014}.pt-icon-btn.is-trip:hover{border-color:var(--accent);color:var(--accent-strong);background:var(--accent-soft)}.pt-warnings{flex-wrap:wrap;gap:6px;margin:10px 0 0;padding:0;list-style:none;display:flex}.pt-warning-chip{border-radius:999px;align-items:center;gap:6px;max-width:100%;padding:4px 8px;font-size:.7rem;font-weight:500;line-height:1.3;display:inline-flex}.pt-warning-chip.is-error{color:#ffb8b6;background:#ef53502e;border:1px solid #ef535080}.pt-warning-chip.is-warn{color:var(--accent-strong);background:#fbbf2429;border:1px solid #fbbf2473}.pt-warning-icon{border-radius:50%;flex:none;justify-content:center;align-items:center;width:14px;height:14px;font-size:.6rem;font-weight:800;display:inline-flex}.pt-warning-chip.is-error .pt-warning-icon{background:var(--danger);color:#fff}.pt-warning-chip.is-warn .pt-warning-icon{background:var(--accent-strong);color:#1a1300}.pt-summary-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.pt-stat{background:var(--surface-soft);border:1px solid var(--border);border-radius:var(--radius-sm);transition:border-color .18s var(--ease), background .18s var(--ease);flex-direction:column;gap:4px;padding:10px 12px;display:flex}.pt-stat.is-alert{background:#ef53500f;border-color:#ef535080}.pt-stat-label{letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-size:.6rem;font-weight:600}.pt-stat-value{font-family:var(--font-heading);color:var(--text);font-feature-settings:"tnum";letter-spacing:-.02em;align-items:baseline;gap:4px;font-size:1.2rem;font-weight:700;line-height:1.1;display:flex}.pt-stat.is-alert .pt-stat-value{color:var(--danger)}.pt-stat-unit{color:var(--muted);letter-spacing:.02em;font-size:.7rem;font-weight:600}.pt-selected-note{border-top:1px solid var(--line);color:var(--muted-strong);margin-top:10px;padding-top:10px;font-size:.75rem;line-height:1.45}.pt-selected-note strong{color:var(--accent-strong);font-weight:700}.pt-tip-card{padding-left:14px;position:relative}.pt-tip-bar{background:var(--accent);border-radius:2px;width:3px;position:absolute;top:12px;bottom:12px;left:0}.pt-tip-body{flex-direction:column;gap:10px;display:flex}.pt-tip-text{color:var(--muted-strong);margin:0;font-size:.85rem;font-style:italic;line-height:1.55}.pt-tip-actions{justify-content:flex-end;display:flex}.pt-ghost-btn{border:1px solid var(--border);color:var(--muted-strong);font:inherit;letter-spacing:.04em;cursor:pointer;transition:border-color .16s var(--ease), color .16s var(--ease), background .16s var(--ease);background:0 0;border-radius:999px;align-items:center;gap:4px;padding:4px 10px;font-size:.7rem;font-weight:600;display:inline-flex}.pt-ghost-btn:hover{border-color:var(--accent);color:var(--accent-strong);background:var(--accent-soft)}.pt-ghost-btn:focus-visible{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.ff-shell{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);width:100%;height:100%;min-height:600px;display:flex;overflow:hidden}.ff-scene{background:var(--surface);border-right:1px solid var(--border);flex-direction:column;flex:58%;min-width:0;display:flex;position:relative}.ff-scene-header{border-bottom:1px solid var(--border);background:var(--surface-alt);justify-content:space-between;align-items:center;gap:12px;padding:10px 14px;display:flex}.ff-scene-title{flex-wrap:wrap;align-items:center;gap:10px;min-width:0;display:flex}.ff-scene-tag{letter-spacing:.14em;text-transform:uppercase;color:var(--accent-strong);font-size:.62rem;font-weight:700}.ff-scene-name{color:var(--text);font-size:.95rem;font-weight:600}.ff-difficulty{letter-spacing:.1em;text-transform:uppercase;border:1px solid var(--border-strong);color:var(--muted-strong);border-radius:999px;padding:2px 8px;font-size:.6rem;font-weight:700}.ff-d-easy{color:#86efac;background:#86efac14;border-color:#86efac66}.ff-d-medium{color:var(--accent-strong);background:var(--accent-soft);border-color:#fbbf2466}.ff-d-hard{color:#fda4af;background:#fda4af14;border-color:#fda4af66}.ff-svg{background:radial-gradient(70% 60% at 50% 40%,#f59e0b0a,#0000 70%),#0d1014;flex:auto;width:100%;min-height:0;display:block}.ff-tp{cursor:pointer}.ff-tp-hit{fill:#fff0;stroke:none}.ff-tp-dot{fill:var(--surface);stroke:var(--accent-strong);stroke-width:1.6px;transition:fill .16s var(--ease), stroke .16s var(--ease), r .16s var(--ease)}.ff-tp:hover .ff-tp-dot{fill:var(--accent-soft);stroke:var(--accent);filter:drop-shadow(0 0 6px var(--accent-glow))}.ff-tp-red{filter:drop-shadow(0 0 8px #ef535080);animation:ff-pop .22s var(--ease);fill:#ef5350!important;stroke:#ffb4b4!important}.ff-tp-black{animation:ff-pop .22s var(--ease);fill:#1a1a1a!important;stroke:#888!important}@keyframes ff-pop{0%{transform:scale(.7)}50%{transform:scale(1.3)}to{transform:scale(1)}}.ff-tp-label{fill:var(--muted-strong);pointer-events:none;letter-spacing:.04em;font-family:SF Mono,ui-monospace,monospace;font-size:9px;font-weight:600}.ff-tp-tooltip{opacity:0;pointer-events:none;transition:opacity .14s var(--ease)}.ff-tp:hover .ff-tp-tooltip{opacity:1}.ff-probe-path{stroke-dasharray:480;stroke-dashoffset:0;animation:ff-probe-draw .22s var(--ease)}@keyframes ff-probe-draw{0%{stroke-dashoffset:480px}to{stroke-dashoffset:0}}.ff-scene-knobs{border-top:1px solid var(--border);background:var(--surface-alt);flex-wrap:wrap;gap:12px;padding:10px 14px;display:flex}.ff-knob{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);align-items:center;gap:8px;padding:4px 8px;display:flex}.ff-knob-label{color:var(--muted-strong);text-transform:uppercase;letter-spacing:.1em;font-size:.7rem}.ff-segmented{background:var(--surface-soft);border:1px solid var(--border-strong);border-radius:var(--radius-sm);display:inline-flex;overflow:hidden}.ff-segment{appearance:none;color:var(--muted-strong);cursor:pointer;transition:background .14s var(--ease), color .14s var(--ease);background:0 0;border:0;align-items:center;gap:6px;padding:4px 10px;font-size:.75rem;font-weight:600;display:inline-flex}.ff-segment:hover{color:var(--text)}.ff-segment-on,.ff-segment-red,.ff-segment-black{background:var(--accent-muted);color:var(--accent-strong)}.ff-segment-red{color:#ffb4b4;background:#ef53502e}.ff-segment-black{color:var(--text);background:#ffffff14}.ff-dot{border-radius:50%;width:8px;height:8px;display:inline-block}.ff-dot-red{background:#ef5350;box-shadow:0 0 6px #ef535099}.ff-dot-black{background:#1a1a1a;border:1px solid #555}.ff-hud{background:var(--surface-alt);scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent;flex-direction:column;flex:0 0 42%;gap:10px;max-width:480px;max-height:100%;padding:12px 14px;display:flex;overflow-y:auto}.ff-hud::-webkit-scrollbar{width:6px}.ff-hud::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:3px}.ff-hud::-webkit-scrollbar-track{background:0 0}.ff-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-card);flex-direction:column;gap:8px;padding:12px 14px;display:flex}.ff-card-head{align-items:center;gap:8px;display:flex}.ff-card-icon{border-radius:var(--radius-sm);background:var(--accent-soft);width:22px;height:22px;color:var(--accent-strong);justify-content:center;align-items:center;display:inline-flex}.ff-card-title{letter-spacing:.04em;text-transform:uppercase;color:var(--muted-strong);margin:0;font-size:.85rem;font-weight:700}.ff-card-nav{gap:12px}.ff-nav-row{align-items:center;gap:10px;display:flex}.ff-nav-meta{text-align:center;flex-direction:column;flex:1;align-items:center;gap:2px;min-width:0;display:flex}.ff-scenario-counter{color:var(--muted);text-transform:uppercase;letter-spacing:.12em;font-size:.7rem}.ff-scenario-name{color:var(--text);white-space:nowrap;text-overflow:ellipsis;max-width:100%;font-size:.95rem;font-weight:600;overflow:hidden}.ff-icon-btn{border-radius:var(--radius-sm);border:1px solid var(--border-strong);background:var(--surface-soft);width:32px;height:32px;color:var(--muted-strong);transition:background .14s var(--ease), color .14s var(--ease), border-color .14s var(--ease);justify-content:center;align-items:center;display:inline-flex}.ff-icon-btn:hover:not(:disabled){background:var(--accent-soft);color:var(--accent-strong);border-color:var(--accent-muted)}.ff-icon-btn:disabled{opacity:.35;cursor:not-allowed}.ff-streak-row{border-top:1px dashed var(--border);justify-content:space-between;align-items:center;gap:10px;padding-top:6px;display:flex}.ff-streak{align-items:baseline;gap:6px;display:inline-flex}.ff-flame{filter:drop-shadow(0 0 6px #f59e0b66);font-size:1rem}.ff-streak-num{color:var(--accent-strong);font-size:1.6rem;font-weight:800;line-height:1}.ff-streak-label{color:var(--muted);text-transform:uppercase;letter-spacing:.1em;font-size:.7rem}.ff-best,.ff-solved-chip{background:var(--surface-soft);border:1px solid var(--border);color:var(--muted-strong);letter-spacing:.04em;border-radius:999px;padding:4px 10px;font-size:.72rem;font-weight:600}.ff-mastery{background:#86efac0f;border-color:#86efac66;flex-direction:column;gap:4px;display:flex}.ff-mastery strong{color:#86efac;letter-spacing:.06em;text-transform:uppercase;font-size:.85rem}.ff-mastery span{color:var(--muted-strong);font-size:.85rem}.ff-card-symptom .ff-symptom{color:var(--text);margin:0;font-size:.92rem;line-height:1.5}.ff-meter{border-radius:var(--radius-md);background:linear-gradient(#2a2c2f,#1a1c1f);border:1px solid #3a3d40;flex-direction:column;gap:10px;padding:14px;display:flex;box-shadow:inset 0 1px #ffffff0f,inset 0 -1px #0006,0 8px 24px #0006}.ff-meter-brand{letter-spacing:.18em;text-transform:uppercase;color:#ffffff73;justify-content:space-between;align-items:center;font-size:.6rem;font-weight:700;display:flex}.ff-meter-model{color:#ffffff4d;letter-spacing:.12em;font-weight:600}.ff-meter-screen{border-radius:var(--radius-sm);background:#101a14;border:1px solid #0a0f0c;padding:10px 14px 12px;position:relative;overflow:hidden;box-shadow:inset 0 0 30px #bef2640d,inset 0 1px 2px #0009}.ff-screen-glyphs{justify-content:space-between;align-items:center;gap:8px;margin-bottom:4px;display:flex}.ff-screen-mode{letter-spacing:.16em;color:#bef264b3;text-shadow:0 0 6px #bef26466;font-family:SF Mono,ui-monospace,monospace;font-size:.65rem;font-weight:700}.ff-screen-led-row{gap:6px;display:inline-flex}.ff-screen-led{letter-spacing:.1em;border-radius:3px;padding:1px 4px;font-family:SF Mono,ui-monospace,monospace;font-size:.55rem;font-weight:700}.ff-led-dim{color:#bef2642e}.ff-led-on{color:#fde68a;text-shadow:0 0 6px #fde68a99;background:#fde68a2e;animation:.48s ease-in-out infinite ff-beep}@keyframes ff-beep{0%,to{opacity:1}50%{opacity:.3}}.ff-screen-main{justify-content:flex-end;align-items:baseline;gap:10px;display:flex}.ff-screen-value{font-feature-settings:"tnum";letter-spacing:.06em;color:#bef264;text-shadow:0 0 12px #bef26499;animation:ff-flip .28s var(--ease);font-family:SF Mono,ui-monospace,monospace;font-size:2.4rem;font-weight:700;line-height:1;display:inline-block}@keyframes ff-flip{0%{filter:blur(2px);opacity:.4;transform:scale(1.1)}60%{filter:blur();opacity:1}to{transform:scale(1)}}.ff-screen-unit{letter-spacing:.1em;color:#bef264bf;text-shadow:0 0 6px #bef26466;text-align:right;min-width:36px;font-family:SF Mono,ui-monospace,monospace;font-size:.85rem;font-weight:700}.ff-screen-ol .ff-screen-value{color:#fbbf24;text-shadow:0 0 12px #fbbf2499}.ff-screen-beep{pointer-events:none;background:radial-gradient(60% 60%,#fde68a26,#0000 70%);animation:.48s ease-in-out infinite ff-beep;position:absolute;inset:0}.ff-meter-modes{grid-template-columns:repeat(5,1fr);gap:6px;display:grid}.ff-mode-btn{appearance:none;border-radius:var(--radius-sm);color:#ffffffa6;cursor:pointer;transition:background .14s var(--ease), color .14s var(--ease), border-color .14s var(--ease);background:linear-gradient(#36393d,#232628);border:1px solid #3a3d40;padding:6px 4px;font-size:.85rem;font-weight:700}.ff-mode-btn:hover{color:var(--text);border-color:var(--accent-muted)}.ff-mode-active{color:#1a1c1f;background:linear-gradient(#fbbf24,#f59e0b);border-color:#fbbf24;box-shadow:0 0 12px #fbbf2473,inset 0 1px #ffffff4d}.ff-active-row{border-top:1px dashed #ffffff14;justify-content:space-between;align-items:center;gap:8px;padding-top:4px;display:flex}.ff-active-label{text-transform:uppercase;letter-spacing:.1em;color:#ffffff80;font-size:.72rem;font-weight:600}.ff-segmented-probe{background:#00000059;border-color:#3a3d40}.ff-probe-status{color:#ffffff8c;justify-content:space-between;padding-top:2px;font-family:SF Mono,ui-monospace,monospace;font-size:.78rem;display:flex}.ff-probe-status strong{color:var(--accent-strong);font-weight:700}.ff-hint-count{color:var(--muted);letter-spacing:.06em;margin-left:auto;font-size:.7rem}.ff-hint-btn{appearance:none;border:1px dashed var(--accent-muted);background:var(--accent-soft);color:var(--accent-strong);border-radius:var(--radius-sm);cursor:pointer;transition:background .14s var(--ease), border-color .14s var(--ease);align-self:flex-start;padding:8px 12px;font-size:.85rem;font-weight:700}.ff-hint-btn:hover{background:var(--accent-muted);border-color:var(--accent-strong)}.ff-hint-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.ff-hint-list li{color:var(--muted-strong);background:var(--surface-soft);border:1px solid var(--border);border-left:2px solid var(--accent);border-radius:var(--radius-sm);gap:8px;padding:8px 10px;font-size:.85rem;line-height:1.45;display:flex}.ff-hint-num{color:var(--accent-strong);flex-shrink:0;font-size:.75rem;font-weight:700}.ff-muted-note{color:var(--muted);margin:0;font-size:.78rem;line-height:1.5}.ff-choices{flex-direction:column;gap:6px;margin:0;padding:0;list-style:none;display:flex}.ff-choice{appearance:none;text-align:left;border-radius:var(--radius-sm);border:1px solid var(--border-strong);background:var(--surface-soft);width:100%;color:var(--text);cursor:pointer;transition:background .14s var(--ease), border-color .14s var(--ease), box-shadow .14s var(--ease);align-items:flex-start;gap:10px;padding:9px 12px;font-size:.85rem;font-weight:500;line-height:1.4;display:flex}.ff-choice:hover:not(:disabled){border-color:var(--accent-muted);background:var(--surface)}.ff-choice-key{background:var(--surface);border:1px solid var(--border-strong);width:22px;height:22px;color:var(--muted-strong);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:.78rem;font-weight:800;display:inline-flex}.ff-choice-text{flex:1;min-width:0}.ff-choice-selected{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 1px var(--accent), 0 0 16px var(--accent-glow)}.ff-choice-selected .ff-choice-key{background:var(--accent);color:#1a1c1f;border-color:var(--accent)}.ff-choice-correct{color:#d1fae5;background:#86efac1a;border-color:#86efacb3}.ff-choice-correct .ff-choice-key{color:#052e16;background:#86efac;border-color:#86efac}.ff-choice-wrong{color:#fecaca;background:#ef535014;border-color:#ef535099}.ff-choice-wrong .ff-choice-key{background:var(--danger);color:#fff;border-color:var(--danger)}.ff-choice:disabled{cursor:default}.ff-submit{appearance:none;border-radius:var(--radius-sm);border:1px solid var(--accent);background:linear-gradient(180deg, var(--accent-strong), var(--accent));color:#1a1c1f;letter-spacing:.04em;cursor:pointer;width:100%;transition:filter .14s var(--ease), transform .14s var(--ease);justify-content:center;align-items:center;gap:8px;padding:10px 14px;font-size:.92rem;font-weight:700;display:inline-flex}.ff-submit:hover:not(:disabled){filter:brightness(1.08)}.ff-submit:active:not(:disabled){transform:translateY(1px)}.ff-submit:disabled{opacity:.4;cursor:not-allowed}.ff-submit-next{color:#052e16;background:linear-gradient(#86efac,#4ade80);border-color:#4ade80}.ff-submit-retry{color:#2a0a0d;background:linear-gradient(#fda4af,#f87171);border-color:#f87171}.ff-banner{border-radius:var(--radius-sm);flex-direction:column;gap:8px;margin-top:4px;padding:12px;font-size:.86rem;line-height:1.5;display:flex}.ff-banner-head{align-items:center;gap:8px;font-size:.92rem;display:flex}.ff-banner-head strong{font-weight:700}.ff-banner-good{color:#d1fae5;background:#86efac14;border:1px solid #86efac4d}.ff-banner-good .ff-banner-head{color:#86efac}.ff-banner-bad{color:#fecaca;background:#ef535014;border:1px solid #ef53504d}.ff-banner-bad .ff-banner-head{color:#fda4af}.ff-banner p{margin:0}.ff-confirm{color:#ffffffb3;font-size:.82rem}.ff-card-note{box-shadow:none;background:0 0;border-style:dashed}@media (width<=980px){.ff-shell{flex-direction:column}.ff-scene{border-right:0;border-bottom:1px solid var(--border);flex:auto;min-height:480px}.ff-hud{flex:auto;max-width:none;max-height:none}}:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#0b0d10;--surface:#14171b;--surface-alt:#1a1d22;--surface-soft:#1f2328;--border:#232830;--border-strong:#323940;--line:#ffffff0f;--fill:#ffffff09;--text:#edf0f4;--muted:#6b7486;--muted-strong:#9aa5b4;--accent:#f59e0b;--accent-soft:#f59e0b12;--accent-strong:#fbbf24;--accent-muted:#f59e0b29;--accent-glow:#f59e0b1f;--danger:#ef5350;--shadow-card:0 1px 3px #0000004d, 0 4px 16px #0003;--shadow-card-hover:0 2px 8px #00000059, 0 8px 28px #00000040;--shadow-glow:0 0 20px var(--accent-glow), 0 0 40px #f59e0b0a;--radius-lg:14px;--radius-md:10px;--radius-sm:8px;--ease:cubic-bezier(.16, 1, .3, 1);--font-ui:-apple-system, "SF Pro Text", "Segoe UI", system-ui, sans-serif;--font-heading:-apple-system, "SF Pro Display", "Segoe UI", system-ui, sans-serif}*{box-sizing:border-box}html,body,#root{background:var(--bg);height:100%;min-height:100%}body{background:var(--bg);color:var(--text);font-family:var(--font-ui);-webkit-font-smoothing:antialiased;background-image:radial-gradient(80% 60% at 50% -10%,#f59e0b0a,#0000 70%);margin:0}a,button,input,select{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.site-shell{width:min(1160px,100% - 32px);margin:0 auto;padding:18px 0 40px}.workspace{gap:18px;display:grid}.topbar{z-index:20;-webkit-backdrop-filter:blur(20px)saturate(1.4);background:#0b0d10cc;border-bottom:1px solid #ffffff0f;border-radius:0;grid-template-columns:auto auto minmax(260px,1fr);align-items:center;gap:16px;margin-bottom:18px;padding:12px 16px;display:grid;position:sticky;top:0}.brand{align-items:center;gap:10px;display:inline-flex}.brand strong,h1,h2,h3{font-family:var(--font-heading);letter-spacing:-.02em;margin:0;font-weight:600}.brand strong{color:var(--text);font-size:1.02rem}.brand-mark{width:24px;height:24px;color:var(--accent);flex:none}.primary-nav{border-radius:var(--radius-sm);background:#ffffff0a;border:1px solid #ffffff0a;gap:4px;padding:3px;display:inline-flex}.primary-nav a{min-height:34px;color:var(--muted);transition:all .18s var(--ease);background:0 0;border:0;border-radius:6px;justify-content:center;align-items:center;padding:0 14px;font-size:.85rem;font-weight:500;display:inline-flex}.primary-nav a.is-active{color:var(--text);background:#ffffff14;font-weight:600;box-shadow:0 1px 4px #0003}.primary-nav a:hover:not(.is-active){color:var(--muted-strong);background:#ffffff08}.topbar-actions{justify-content:end;align-items:center;gap:8px;display:flex}.search-field{border:1px solid var(--border);border-radius:var(--radius-md);min-width:160px;min-height:38px;transition:border-color .2s var(--ease), box-shadow .2s var(--ease);background:#14171bb3;flex:1;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px;padding:0 10px 0 14px;display:grid;box-shadow:inset 0 1px 2px #00000026}.search-field:focus-within{border-color:var(--accent-muted);box-shadow:inset 0 1px 2px #00000026, 0 0 0 3px var(--accent-soft)}.search-field input{min-height:auto;color:var(--text);background:0 0;border:0;padding:0;font-size:.88rem}.search-field input:focus{outline:none}.search-hint,kbd{min-width:36px;min-height:22px;color:var(--muted);background:#ffffff0a;border:1px solid #ffffff14;border-radius:6px;justify-content:center;align-items:center;padding:0 6px;font-size:.72rem;font-weight:600;display:inline-flex;box-shadow:0 1px 2px #00000026}.ghost-button,.segment,.switch-chip{border:1px solid var(--border);border-radius:var(--radius-sm);min-height:36px;color:var(--muted-strong);transition:all .18s var(--ease);background:0 0;justify-content:center;align-items:center;padding:0 12px;font-size:.84rem;font-weight:500;display:inline-flex}.ghost-button:hover,.switch-chip:hover{border-color:var(--border-strong);color:var(--text);background:#ffffff0d;transform:translateY(-.5px);box-shadow:0 2px 8px #00000026}.ghost-button:active,.switch-chip:active{box-shadow:none;transform:translateY(0)}.switch-chip{min-height:30px;padding:0 10px;font-size:.78rem}.switch-chip.is-active{border-color:var(--accent-muted);background:var(--accent-soft);color:var(--accent-strong);box-shadow:0 0 12px var(--accent-glow)}.icon-button{border-radius:var(--radius-sm);width:34px;height:34px;color:var(--muted);transition:all .18s var(--ease);background:0 0;border:1px solid #0000;justify-content:center;align-items:center;padding:0;display:inline-flex}.icon-button:hover{border-color:var(--border);color:var(--text);background:#ffffff0d}.icon-button svg{width:16px;height:16px}.page{display:none}.page.is-active{gap:18px;display:grid}.page-copy,.search-result-copy,.sheet-summary,.sheet-list li{color:var(--muted)}.page-copy,.sheet-summary{margin:6px 0 0;line-height:1.55}.tool-grid{overscroll-behavior-x:contain;scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none;grid-auto-columns:100%;grid-auto-flow:column;gap:0;width:100%;max-width:860px;margin-inline:auto;display:grid;position:relative;overflow:auto hidden}.tool-grid::-webkit-scrollbar{display:none}.sheet-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid;position:relative}.sheet-grid:before{content:"";background:linear-gradient(to bottom, transparent, var(--border), transparent);pointer-events:none;width:1px;position:absolute;top:5%;bottom:5%;left:calc(50% - .5px)}.tool-panel{border:1px solid var(--border);border-radius:var(--radius-lg);background:radial-gradient(120% 80% at 50% -10%, #f59e0b0d, transparent 60%), linear-gradient(180deg, var(--surface) 0%, var(--surface-alt) 100%);box-shadow:inset 0 1px 0 #ffffff0a, var(--shadow-card);scroll-snap-align:start;scroll-snap-stop:always;box-sizing:border-box;min-width:0;transition:border-color .22s var(--ease), box-shadow .22s var(--ease), transform .22s var(--ease);padding:22px 22px 20px;position:relative}.tool-panel:before{content:"";background:linear-gradient(90deg, transparent, var(--accent-muted), transparent);opacity:0;height:1px;transition:opacity .22s var(--ease);pointer-events:none;position:absolute;top:0;left:14%;right:14%}.tool-panel:hover{border-color:var(--accent-muted);box-shadow:inset 0 1px 0 #ffffff0f, var(--shadow-card-hover), 0 0 0 1px var(--accent-soft);transform:translateY(-1px)}.tool-panel:hover:before{opacity:1}.sheet-card{border:1px solid var(--border);border-radius:var(--radius-lg);background:linear-gradient(to bottom, var(--surface), #14171b99);box-shadow:var(--shadow-card);transition:border-color .2s var(--ease), box-shadow .2s var(--ease);gap:12px;padding:20px;display:grid}.sheet-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-card-hover)}.page-tutorials{width:100%;max-width:1040px;margin-inline:auto}.tutorials-header{padding:4px 0 2px}.tutorial-count,.tutorial-category{border:1px solid var(--accent-muted);background:var(--accent-soft);width:fit-content;min-height:26px;color:var(--accent-strong);border-radius:999px;align-items:center;padding:0 9px;font-size:.76rem;font-weight:700;display:inline-flex}.tutorial-feature,.tutorial-card{border:1px solid var(--border);border-radius:var(--radius-lg);background:linear-gradient(to bottom, var(--surface), #14171b99);box-shadow:var(--shadow-card);transition:border-color .2s var(--ease), box-shadow .2s var(--ease);overflow:hidden}.tutorial-feature:hover,.tutorial-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-card-hover)}.tutorial-feature{grid-template-columns:minmax(0,1.25fr) minmax(320px,.75fr);gap:0;display:grid}.tutorial-feature-video{background:#050607;min-width:0}.tutorial-feature-copy,.tutorial-card-body{align-content:start;gap:12px;padding:18px;display:grid}.tutorial-feature-copy h3,.tutorial-card-body h3{letter-spacing:0;font-size:1.06rem;line-height:1.25}.tutorial-feature-copy p,.tutorial-card-body p{color:var(--muted-strong);margin:0;line-height:1.55}.tutorial-feature-copy ul,.tutorial-card-body ul{color:var(--muted);margin:0;padding-left:18px;line-height:1.55}.tutorial-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.tutorial-card{grid-template-rows:auto 1fr;display:grid}.tutorial-card-kicker{color:var(--muted);justify-content:space-between;align-items:center;gap:10px;font-size:.76rem;font-weight:700;display:flex}.tutorial-source-link{justify-self:start;margin-top:2px}.tutorial-embed{aspect-ratio:16/9;background:#050607;width:100%;position:relative;overflow:hidden}.tutorial-embed iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.tool-meta{color:var(--muted);font-size:.78rem}.page-header,.tool-heading,.sheet-card-head,.modal-header{justify-content:space-between;align-items:center;gap:14px;display:flex}.page-header h2,.modal-header h2{font-size:1.12rem}.page-header{align-items:start}.tool-heading h3,.sheet-card-head h3{letter-spacing:-.01em;font-size:1.06rem;font-weight:650;line-height:1.2}.tool-title{padding-left:12px;position:relative}.tool-title:before{content:"";background:linear-gradient(180deg, var(--accent-strong), var(--accent));width:3px;height:14px;box-shadow:0 0 8px var(--accent-glow);border-radius:2px;position:absolute;top:50%;left:0;transform:translateY(-50%)}.tool-title-wrap{align-items:center;max-width:100%;display:inline-flex;position:relative}.tool-title{cursor:help;outline:none;align-items:center;margin:0;display:inline-flex}.tool-tooltip{z-index:5;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface-soft);width:min(300px,100vw - 48px);color:var(--muted-strong);opacity:0;pointer-events:none;transition:opacity .18s var(--ease), transform .18s var(--ease);padding:10px 12px;font-size:.76rem;line-height:1.5;position:absolute;top:calc(100% + 8px);left:0;transform:translateY(-4px)}.tool-title-wrap:hover .tool-tooltip,.tool-title-wrap:focus-within .tool-tooltip{opacity:1;transform:translateY(0)}.tool-form,.tool-output{gap:12px;margin-top:16px;display:grid}.field,.palette-search{gap:6px;display:grid}.field span:first-child{color:var(--muted-strong);letter-spacing:.01em;font-size:.8rem;font-weight:600}.field-row,.mini-metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.mini-metrics.stacked{grid-template-columns:1fr}input:not([type=checkbox]):not([type=radio]),select{border:1px solid var(--border);border-radius:var(--radius-md);width:100%;min-height:42px;color:var(--text);transition:border-color .2s var(--ease), box-shadow .2s var(--ease);background:#0b0d1099;padding:0 13px;box-shadow:inset 0 1px 2px #0000001f}input::placeholder{color:var(--muted)}select{appearance:none}input:focus,select:focus{border-color:var(--accent);box-shadow:inset 0 1px 2px #0000001f, 0 0 0 3px var(--accent-soft), 0 0 16px var(--accent-glow);outline:none}.ghost-button:focus-visible,.segment:focus-visible,.switch-chip:focus-visible,.palette-result:focus-visible,.icon-button:focus-visible{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}input[aria-invalid=true]{border-color:var(--danger);box-shadow:0 0 0 3px #ef53501a}.input-wrap{align-items:center;display:flex;position:relative}.input-wrap input{padding-right:72px}.unit-select,.suffix{position:absolute;right:6px}.unit-select{background:var(--surface-soft);border-color:#0000;border-radius:7px;width:60px;min-height:30px;padding:0 8px;font-size:.8rem;font-weight:600}.suffix{background:var(--surface-soft);min-width:44px;height:30px;color:var(--muted-strong);border:0;border-radius:7px;justify-content:center;align-items:center;font-size:.8rem;font-weight:600;display:inline-flex}.segmented{grid-template-columns:repeat(2,1fr);gap:8px;display:grid}.segment{border-color:var(--border);min-height:42px}.check-row{flex-wrap:wrap;align-items:center;gap:16px;min-height:42px;display:flex}.check-option{cursor:pointer;color:var(--muted-strong);-webkit-user-select:none;user-select:none;align-items:center;gap:8px;font-size:.9rem;display:inline-flex}.check-option input[type=checkbox]{cursor:pointer;width:18px;height:18px;accent-color:var(--accent);margin:0}.check-option:has(input:checked){color:var(--text)}input:disabled{opacity:.5;cursor:not-allowed}.segment.active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-strong);box-shadow:0 0 12px var(--accent-glow)}.tool-output{margin-top:auto}.result-main{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface-alt);gap:6px;padding:16px;display:grid;position:relative;overflow:hidden}.result-label{color:var(--muted-strong);letter-spacing:.08em;text-transform:uppercase;margin:0;font-size:.7rem;font-weight:700}.result-value{color:var(--text);letter-spacing:-.02em;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;margin:0;font-size:clamp(1.8rem,4vw,2.8rem);font-weight:700;line-height:1}.mini-metrics strong{font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.mini-metrics>div{border:1px solid var(--border);border-radius:var(--radius-md);background:linear-gradient(to bottom, var(--surface-alt), #1a1d2280);transition:border-color .18s var(--ease);gap:4px;padding:12px 14px;display:grid}.mini-metrics>div:hover{border-color:var(--border-strong)}.mini-metrics span{color:var(--muted);font-size:.76rem;font-weight:500}.mini-metrics strong{font-size:.95rem;font-weight:600}.field-error{color:#ff8a80;margin:-2px 0 0;font-size:.78rem;line-height:1.4}.field-note{color:var(--muted);margin:-2px 0 0;font-size:.76rem;line-height:1.4}.formula-note{color:var(--muted);margin:2px 0 0;font-size:.76rem;line-height:1.4}.containment-rows{gap:8px;display:grid}.containment-card{border:1px solid var(--border);border-radius:var(--radius-md);background:linear-gradient(to bottom, var(--surface-alt), #1a1d2280);transition:border-color .18s var(--ease), box-shadow .18s var(--ease);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:10px;padding:10px 12px;display:grid}.containment-card:hover{border-color:var(--border-strong);box-shadow:0 2px 8px #00000026}.containment-index{background:var(--fill);width:26px;height:26px;color:var(--muted);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:.72rem;font-weight:700;display:flex}.containment-fields{grid-template-columns:1fr 1fr;gap:8px;display:grid}.containment-field{gap:3px;display:grid}.containment-field span{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:.68rem;font-weight:600}.containment-field select{background:var(--bg);border-radius:8px;min-height:34px;padding:0 10px;font-size:.85rem}.containment-remove{width:28px;height:28px;color:var(--muted);cursor:pointer;transition:all .18s var(--ease);background:0 0;border:0;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;padding:0;display:flex}.containment-remove:hover{color:var(--danger);background:#ef53501f}.add-containment-btn{border:1px dashed var(--border);border-radius:var(--radius-md);width:100%;min-height:38px;color:var(--muted-strong);cursor:pointer;transition:all .18s var(--ease);background:0 0;justify-content:center;align-items:center;gap:6px;padding:0 14px;font-size:.82rem;font-weight:500;display:inline-flex}.add-containment-btn:hover{border-color:var(--accent-muted);background:var(--accent-soft);color:var(--accent-strong);box-shadow:0 0 12px var(--accent-glow)}.breakdown-row{border-radius:var(--radius-md);grid-template-columns:repeat(4,1fr);gap:2px;display:grid;overflow:hidden}.breakdown-item{background:var(--surface-alt);gap:3px;padding:10px 12px;display:grid}.breakdown-item span{color:var(--muted);text-transform:uppercase;letter-spacing:.03em;font-size:.68rem;font-weight:600}.breakdown-item strong{font-size:.88rem;font-weight:600}.breakdown-total{background:var(--surface-soft)}.result-sub{color:var(--muted);margin:0;font-size:.72rem;font-weight:500}.tool-actions-row{flex-wrap:wrap;gap:10px;display:flex}.sheet-list{margin:0;padding-left:18px}.sheet-list li+li{margin-top:8px}.sheet-list li{font-size:.9rem;line-height:1.5}.legend-grid{flex-direction:column;gap:6px;display:flex}.legend-row{align-items:center;gap:12px;display:flex}.legend-swatch{border:1px solid #ffffff26;border-radius:3px;flex-shrink:0;width:48px;height:20px;position:relative;overflow:hidden}.legend-swatch--x{justify-content:center;align-items:center;display:flex}.legend-x{width:100%;height:100%;position:absolute;inset:0}.legend-swatch--box{justify-content:center;align-items:center;height:24px;display:flex}.legend-box-text{color:inherit;font-size:.6rem;font-weight:800}.legend-swatch--outline{background:0 0}.legend-label{color:var(--text);font-size:.82rem;font-weight:500}.empty-state{border:1px dashed var(--border);border-radius:var(--radius-md);color:var(--muted);text-align:center;padding:16px}.modal-backdrop{z-index:40;-webkit-backdrop-filter:blur(8px)saturate(1.2);background:#000000a6;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.modal-shell{border:1px solid var(--border-strong);border-radius:var(--radius-lg);background:linear-gradient(to bottom, var(--surface), #14171bf2);width:min(660px,100%);max-height:min(80vh,720px);padding:20px;overflow:auto;box-shadow:0 8px 40px #00000080,0 0 1px #ffffff1a}.palette-search{margin-top:14px}.palette-search input{min-height:44px}.result-list,.palette-results,.help-grid{gap:8px;display:grid}.search-result,.palette-result,.help-row{border:1px solid var(--border);border-radius:var(--radius-md);background:0 0}.search-result,.palette-result{color:inherit;text-align:left;transition:all .18s var(--ease);gap:4px;padding:12px 14px;display:grid}.palette-result:hover{border-color:var(--border-strong);background:#ffffff0a}.palette-result.is-active{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 12px var(--accent-glow)}.search-result-title-row{justify-content:space-between;align-items:center;gap:12px;display:flex}.search-result-title,.palette-result-title{font-size:.92rem;font-weight:600}.search-result-tag{color:var(--accent-strong);letter-spacing:.06em;text-transform:uppercase;font-size:.7rem;font-weight:600}.palette-result-subtitle{color:var(--muted);font-size:.84rem}.help-shell{width:min(480px,100%)}.help-row{justify-content:space-between;align-items:center;gap:16px;padding:12px 14px;display:flex}.help-action-row .ghost-button{min-height:34px}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.mobile-indicator{justify-content:center;align-items:center;gap:10px;width:100%;max-width:860px;margin-inline:auto;padding:12px 0 4px;display:flex}.mobile-nav-btn{border:1px solid var(--border);width:36px;height:36px;color:var(--muted-strong);cursor:pointer;transition:all .18s var(--ease);background:0 0;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;padding:0;display:flex}.mobile-nav-btn:hover{border-color:var(--border-strong);color:var(--text)}.mobile-nav-btn:active{background:var(--fill);border-color:var(--border-strong)}.mobile-nav-btn:disabled{opacity:.25;pointer-events:none}.mobile-nav-btn svg{width:16px;height:16px}.mobile-dots{scrollbar-width:none;-ms-overflow-style:none;justify-content:center;align-items:center;gap:7px;min-width:0;padding:4px 0;display:flex;overflow-x:auto}.mobile-dots::-webkit-scrollbar{display:none}.mobile-dot{cursor:pointer;width:7px;height:7px;transition:all .28s var(--ease);background:#ffffff26;border:0;border-radius:50%;flex-shrink:0;padding:0}.mobile-dot:hover{background:#ffffff4d}.mobile-dot.is-active{background:var(--accent);width:24px;box-shadow:0 0 8px var(--accent-glow);border-radius:4px}@media (width<=980px){.topbar{grid-template-columns:1fr;gap:10px}.primary-nav{width:100%;overflow:auto}.topbar-actions,.sheet-grid,.tutorial-feature,.tutorial-grid,.field-row,.mini-metrics{grid-template-columns:1fr}.containment-card{grid-template-columns:auto minmax(0,1fr) auto}.containment-fields{grid-template-columns:1fr 1fr}.breakdown-row{grid-template-columns:repeat(2,1fr)}.site-shell{width:min(100% - 20px,1160px);padding-top:12px}.page-header,.tool-heading,.sheet-card-head,.modal-header{flex-direction:column;align-items:start}.tool-switcher{width:100%}.tool-grid:before,.sheet-grid:before{display:none}}@media (width<=720px){html,body,#root{background:var(--surface);overflow:hidden}body{width:100%}#root{width:auto;height:auto;min-height:0;position:fixed;inset:0;overflow:hidden}.site-shell{background:var(--bg);grid-template-rows:auto minmax(0,1fr);width:auto;height:auto;min-height:0;padding:0;display:grid;position:absolute;inset:0}.workspace,.page.is-active{gap:0}.workspace{min-height:0;overflow:hidden}.page-home.is-active{grid-template-rows:minmax(0,1fr);gap:0;min-height:0;overflow:hidden}.page-home.is-active .tool-grid{height:100%;min-height:0;padding-bottom:0}.page-home.is-active .tool-panel{background:var(--bg);width:100%;padding-bottom:calc(max(env(safe-area-inset-bottom) - 22px, 6px) + 56px);border:0;border-radius:0;flex-direction:column;display:flex;overflow-y:auto}.page-home.is-active .tool-panel .tool-output{margin-top:auto;padding-bottom:4px}.mobile-indicator{padding:6px calc(env(safe-area-inset-right) + 10px) max(env(safe-area-inset-bottom) - 22px, 6px) calc(env(safe-area-inset-left) + 10px);background:var(--surface);-webkit-backdrop-filter:blur(16px)saturate(1.3);z-index:30;border-top:1px solid #ffffff0f;gap:6px;position:fixed;bottom:0;left:0;right:0}.mobile-dots{flex:1}.topbar{padding:calc(env(safe-area-inset-top) + 8px) calc(env(safe-area-inset-right) + 14px) 8px calc(env(safe-area-inset-left) + 14px);-webkit-backdrop-filter:none;backdrop-filter:none;background:#14171bf2;border-bottom:1px solid #ffffff0f;border-radius:0;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:7px 8px;margin-bottom:0;display:grid;position:static}.brand{flex:none;gap:8px;min-width:0}.brand-mark{width:20px;height:20px}.brand strong{display:none}.primary-nav{border-radius:6px;gap:2px;width:100%;min-width:0;margin-left:0;padding:2px;display:inline-flex}.primary-nav a{border-radius:5px;flex:1 1 0;min-width:0;min-height:28px;padding:0 10px;font-size:.78rem}.topbar-actions{flex-wrap:nowrap;grid-column:1/-1;gap:8px;width:100%;min-width:0}.search-field{border-radius:var(--radius-sm);min-width:0;min-height:30px;font-size:.82rem}.search-hint{min-width:28px;min-height:18px;font-size:.62rem}.tool-panel{padding:16px}.sheet-card{margin:0 12px;padding:16px}.page-tutorials.is-active{padding:10px 10px calc(max(env(safe-area-inset-bottom) - 30px, 2px) + 16px)}.tutorial-feature,.tutorial-card{border-radius:var(--radius-md)}.tutorial-feature-copy,.tutorial-card-body{padding:14px}.tutorial-card-kicker{flex-direction:column;align-items:start;gap:6px}.modal-shell{border-radius:var(--radius-lg)}.page-header,.modal-header{gap:8px}.tool-heading,.sheet-card-head{flex-direction:row;align-items:center;gap:8px}.page-header h2,.modal-header h2{font-size:1rem}.tool-heading h3,.sheet-card-head h3{font-size:.98rem}.tool-grid,.sheet-grid,.field-row,.mini-metrics{gap:10px}.tool-actions-row .ghost-button{width:100%}.tool-form,.tool-output{gap:10px;margin-top:14px}.field{gap:5px}.field span:first-child,.tool-meta{font-size:.76rem}input,select{border-radius:var(--radius-sm);min-height:40px;padding:0 12px;font-size:16px}.input-wrap input{padding-right:66px}.unit-select,.suffix{height:28px;min-height:28px;font-size:.76rem;right:5px}.unit-select{width:54px;padding:0 6px}.suffix{min-width:40px}.result-main{border-radius:var(--radius-sm);padding:14px}.result-label{font-size:.68rem}.result-value{font-size:clamp(1.5rem,9vw,2.2rem)}.mini-metrics>div{border-radius:var(--radius-sm);padding:10px 12px}.mini-metrics strong{font-size:.92rem}.sheet-grid{gap:10px;padding:0 4px}.tutorial-grid{gap:10px}.sheet-list{padding-left:16px}.modal-backdrop{padding:10px}.modal-shell{width:100%;max-height:calc(100vh - 20px);padding:16px}.palette-search{margin-top:10px}.ghost-button,.switch-chip,.icon-button{min-height:34px;font-size:.84rem}.page.is-active:not(.page-home){gap:10px;padding:12px 0;overflow-y:auto}}@media (width<=480px){.tool-panel{padding:14px}.ghost-button,.switch-chip{font-size:.8rem}.icon-button{width:32px;height:32px;min-height:32px}.result-value{font-size:clamp(1.35rem,10vw,1.9rem)}.search-result-title-row{flex-direction:column;align-items:start;gap:4px}}[data-theme=light]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f5f6f8;--surface:#fff;--surface-alt:#f0f1f3;--surface-soft:#e8eaed;--border:#d4d8de;--border-strong:#b8bfc8;--line:#00000014;--fill:#00000008;--text:#1a1d22;--muted:#6b7486;--muted-strong:#4a5568;--accent:#d97706;--accent-soft:#d9770614;--accent-strong:#b45309;--accent-muted:#d9770624;--accent-glow:#d9770614;--danger:#dc2626;--shadow-card:0 1px 3px #00000014, 0 4px 12px #0000000d;--shadow-card-hover:0 2px 8px #0000001a, 0 8px 24px #00000014;--shadow-glow:0 0 16px #d9770614}[data-theme=light] body{background-image:radial-gradient(80% 60% at 50% -10%,#d977060a,#0000 70%)}[data-theme=light] .topbar{background:#f5f6f8d9;border-bottom-color:#00000014}[data-theme=light] .search-field{background:#ffffffe6;box-shadow:inset 0 1px 2px #0000000a}[data-theme=light] .search-hint,[data-theme=light] kbd{color:var(--muted-strong);background:#0000000a;border-color:#0000001a;box-shadow:0 1px 1px #0000000a}[data-theme=light] input:not([type=checkbox]):not([type=radio]),[data-theme=light] select{background:#fffffff2;box-shadow:inset 0 1px 2px #0000000a}[data-theme=light] input::placeholder{color:var(--muted)}[data-theme=light] .tool-panel{background:var(--surface)}[data-theme=light] .modal-backdrop{background:#0000004d}[data-theme=light] .modal-shell{background:var(--surface)}.theme-toggle{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);width:36px;height:36px;color:var(--muted-strong);cursor:pointer;transition:color .15s var(--ease), border-color .15s var(--ease);flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.theme-toggle:hover{color:var(--accent);border-color:var(--accent-muted)}.copyable-result{color:inherit;font:inherit;cursor:pointer;transition:color .15s var(--ease);background:0 0;border:none;align-items:center;gap:6px;padding:0;display:inline-flex}.copyable-result.is-placeholder{cursor:default}.copyable-result:not(.is-placeholder):hover{color:var(--accent)}.copyable-result .copy-icon{opacity:0;transition:opacity .15s var(--ease);color:var(--muted);display:inline-flex}.copyable-result:hover .copy-icon,.copyable-result.is-copied .copy-icon{opacity:1}.copyable-result.is-copied .copy-icon{color:var(--accent)}.formula-toggle{padding:0 20px 14px}.formula-trigger{color:var(--muted);cursor:pointer;transition:color .15s var(--ease);background:0 0;border:none;align-items:center;gap:6px;padding:0;font-size:.78rem;display:inline-flex}.formula-trigger:hover{color:var(--accent)}.formula-content{background:var(--fill);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--muted-strong);white-space:pre-wrap;font-size:.78rem;line-height:1.6;font-family:var(--font-ui);margin:8px 0 0;padding:10px 14px}.field-hint{color:var(--muted);margin-top:4px;font-size:.75rem;font-style:italic;display:block}.history-shell{max-width:480px}.modal-header-actions{align-items:center;gap:8px;display:flex}.history-list{max-height:400px;padding:4px 16px 16px;overflow-y:auto}.history-entry{border-bottom:1px solid var(--line);grid-template-columns:auto 1fr auto;align-items:baseline;gap:4px 10px;padding:10px 0;display:grid}.history-tool{color:var(--accent);text-transform:uppercase;letter-spacing:.04em;font-size:.75rem;font-weight:600}.history-time{color:var(--muted);grid-area:1/3;font-size:.72rem}.history-label{color:var(--muted-strong);grid-column:1/-1;font-size:.82rem}.history-value{color:var(--text);grid-column:1/-1;font-size:.92rem}.page-exams.is-active{gap:18px;display:grid}.exam-shell{gap:20px;min-width:0;max-width:100%;display:grid}.exam-hero{border:1px solid var(--border);border-radius:var(--radius-lg);background:linear-gradient(to bottom, var(--surface), #14171b99);box-shadow:var(--shadow-card);grid-template-columns:minmax(0,1fr) auto;gap:24px;padding:22px 24px;display:grid}.exam-hero-text{gap:8px;min-width:0;display:grid}.exam-hero-text h2{font-size:1.35rem}.exam-title-wrap{align-items:center;gap:8px;width:max-content;max-width:100%;display:inline-flex;position:relative}.exam-title-wrap h2{margin:0}.exam-title-info{border:1px solid var(--border);background:var(--surface-soft);width:18px;height:18px;color:var(--muted);cursor:help;border-radius:50%;justify-content:center;align-items:center;font-family:Georgia,Times New Roman,serif;font-size:.75rem;font-style:italic;font-weight:600;line-height:1;transition:color .15s,border-color .15s;display:inline-flex}.exam-title-info:hover,.exam-title-info:focus-visible{color:var(--accent-strong);border-color:var(--accent-strong);outline:none}.exam-tooltip{background:var(--surface-alt);border:1px solid var(--border);border-radius:var(--radius-md);opacity:0;visibility:hidden;pointer-events:none;z-index:20;gap:6px;width:min(440px,100vw - 48px);padding:12px 14px;transition:opacity .15s,transform .15s,visibility .15s;display:grid;position:absolute;top:calc(100% + 10px);left:0;transform:translateY(-6px);box-shadow:0 12px 32px #00000059}.exam-title-info:hover~.exam-tooltip,.exam-title-info:focus-visible~.exam-tooltip{opacity:1;visibility:visible;transform:translateY(0)}.exam-tooltip-subtitle{color:var(--accent-strong);letter-spacing:.02em;font-size:.8rem;font-weight:600}.exam-tooltip-description,.exam-tooltip-format{color:var(--muted);margin:0;font-size:.82rem;line-height:1.55}.exam-tooltip-format{color:var(--muted-strong);font-weight:500}.exam-title-select{width:auto;max-width:100%;min-height:0;box-shadow:none;color:var(--text);cursor:pointer;background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='none' stroke='%2397a0ab' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round' d='M1 1.5 L6 6.5 L11 1.5'/></svg>") right 4px center no-repeat;border:0;border-radius:0;padding:2px 28px 2px 0;font-size:1.35rem;font-weight:700;line-height:1.25;transition:color .15s}.exam-title-select:hover,.exam-title-select:focus{color:var(--accent-strong);box-shadow:none;border:0;outline:none}.exam-hero-stats{grid-auto-flow:column;align-self:start;align-items:stretch;gap:10px;display:grid}.exam-stat{border:1px solid var(--border);border-radius:var(--radius-md);background:linear-gradient(to bottom, var(--surface-alt), #1a1d2280);text-align:center;gap:4px;min-width:86px;padding:12px 16px;display:grid}.exam-stat span{color:var(--muted);letter-spacing:.06em;text-transform:uppercase;font-size:.7rem;font-weight:600}.exam-stat strong{letter-spacing:-.02em;color:var(--text);font-size:1.4rem;font-weight:700}.exam-stat-sub{color:var(--muted);letter-spacing:0;margin-left:2px;font-size:.8rem;font-weight:500}.exam-progress{background:#ffffff0f;border-radius:999px;width:100%;height:6px;position:relative;overflow:hidden}.exam-progress-bar{background:linear-gradient(90deg, var(--accent), var(--accent-strong));height:100%;box-shadow:0 0 12px var(--accent-glow);transition:width .28s var(--ease)}.exam-sections{gap:24px;display:grid}.exam-section{gap:14px;display:grid}.exam-section-title{color:var(--accent-strong);letter-spacing:.02em;text-transform:uppercase;border-bottom:1px solid var(--border);padding-bottom:8px;font-size:1rem}.exam-question-list{gap:14px;display:grid}.exam-question{border:1px solid var(--border);border-radius:var(--radius-lg);background:linear-gradient(to bottom, var(--surface), #14171b99);box-shadow:var(--shadow-card);min-width:0;max-width:100%;transition:border-color .18s var(--ease), box-shadow .18s var(--ease);gap:12px;padding:18px 20px;scroll-margin-top:90px;display:grid}.exam-question.is-correct{box-shadow:0 0 16px #22c55e14, var(--shadow-card);border-color:#22c55e59}.exam-question.is-incorrect,.exam-question.is-unanswered{box-shadow:0 0 16px #ef535014, var(--shadow-card);border-color:#ef535059}.exam-question-head{justify-content:space-between;align-items:center;gap:10px;display:flex}.exam-q-number{color:var(--muted);letter-spacing:.08em;text-transform:uppercase;font-size:.78rem;font-weight:700}.exam-q-badge{letter-spacing:.04em;text-transform:uppercase;border-radius:999px;padding:3px 10px;font-size:.72rem;font-weight:700}.exam-q-badge--ok{color:#4ade80;background:#22c55e24;border:1px solid #22c55e4d}.exam-q-badge--bad{color:#f87171;background:#ef535024;border:1px solid #ef53504d}.exam-q-prompt{color:var(--text);margin:0;font-size:.96rem;font-weight:500;line-height:1.55}.exam-options{gap:8px;display:grid}.exam-option{border:1px solid var(--border);border-radius:var(--radius-md);background:linear-gradient(to bottom, var(--surface-alt), #1a1d2280);color:var(--text);text-align:left;cursor:pointer;transition:all .18s var(--ease);grid-template-columns:auto minmax(0,1fr) auto;align-items:start;gap:12px;padding:12px 14px;font-size:.88rem;line-height:1.5;display:grid}.exam-option:hover:not(:disabled){border-color:var(--border-strong);background:#ffffff0a;transform:translateY(-.5px)}.exam-option:disabled{cursor:default}.exam-option.is-selected:not(.is-answer):not(.is-wrong){border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 12px var(--accent-glow)}.exam-option.is-answer{color:var(--text);background:#22c55e1a;border-color:#22c55e8c}.exam-option.is-wrong{background:#ef53501a;border-color:#ef53508c}.exam-option-letter{background:var(--fill);width:26px;height:26px;color:var(--muted-strong);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:.78rem;font-weight:700;display:inline-flex}.exam-option.is-selected .exam-option-letter{background:var(--accent);color:#1a1a1a}.exam-option.is-answer .exam-option-letter{color:#0a0a0a;background:#22c55ecc}.exam-option.is-wrong .exam-option-letter{color:#0a0a0a;background:#ef5350cc}.exam-option-text{overflow-wrap:anywhere;word-break:break-word;min-width:0}.exam-option-mark{color:#4ade80;background:#22c55e40;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:22px;height:22px;font-size:.8rem;font-weight:800;display:inline-flex}.exam-option-mark--bad{color:#f87171;background:#ef535040}.exam-explanation{border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--radius-md);background:var(--fill);padding:12px 14px}.exam-explanation-label{color:var(--accent-strong);letter-spacing:.08em;text-transform:uppercase;margin-bottom:4px;font-size:.7rem;font-weight:700;display:block}.exam-explanation p{color:var(--muted-strong);margin:0;font-size:.85rem;line-height:1.6}.exam-footer{z-index:5;border:1px solid var(--border);border-radius:var(--radius-lg);-webkit-backdrop-filter:blur(14px)saturate(1.3);box-shadow:0 -4px 16px #0003, var(--shadow-card);background:#14171beb;justify-content:space-between;align-items:center;gap:14px;padding:14px 18px;display:flex;position:sticky;bottom:0}.exam-footer-status{color:var(--muted-strong);flex:1;min-width:0;font-size:.86rem}.exam-status-ok{color:#4ade80;font-weight:600}.exam-status-bad{color:#f87171;font-weight:600}.exam-jump-btn{font-size:.82rem}.exam-submit-btn{border:1px solid var(--accent);border-radius:var(--radius-md);background:linear-gradient(135deg, var(--accent), var(--accent-strong));color:#1a1a1a;letter-spacing:.02em;cursor:pointer;min-height:42px;box-shadow:0 0 20px var(--accent-glow);transition:all .18s var(--ease);padding:0 22px;font-size:.92rem;font-weight:700}.exam-submit-btn:hover:not(:disabled){box-shadow:0 4px 20px var(--accent-glow), 0 2px 10px #0003;transform:translateY(-1px)}.exam-submit-btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}.exam-results{gap:16px;scroll-margin-top:90px;display:grid}.exam-results-banner{border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-glow);background:linear-gradient(135deg,#f59e0b14,#f59e0b05);justify-content:space-between;align-items:center;gap:20px;padding:20px 24px;display:flex}.exam-results-banner.is-pass{background:linear-gradient(135deg,#22c55e1a,#22c55e08);border-color:#22c55e66;box-shadow:0 0 24px #22c55e14}.exam-results-banner.is-fail{background:linear-gradient(135deg,#ef535014,#ef535005);border-color:#ef535066;box-shadow:0 0 24px #ef535014}.exam-results-score-block{gap:2px;display:grid}.exam-results-label{color:var(--muted-strong);letter-spacing:.1em;text-transform:uppercase;font-size:.72rem;font-weight:700}.exam-results-score{letter-spacing:-.02em;color:var(--text);font-size:clamp(2rem,6vw,3rem);font-weight:800;line-height:1}.exam-results-score span{color:var(--muted-strong);margin-left:2px;font-size:.55em;font-weight:600}.exam-results-percent{color:var(--accent-strong);font-size:.9rem;font-weight:600}.is-pass .exam-results-percent{color:#4ade80}.is-fail .exam-results-percent{color:#f87171}.exam-results-verdict{text-align:right;gap:4px;display:grid}.exam-results-verdict strong{color:var(--text);font-size:1.1rem;font-weight:700}.exam-results-verdict span{color:var(--muted-strong);font-size:.84rem}.exam-results-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.exam-results-card{border:1px solid var(--border);border-radius:var(--radius-lg);background:linear-gradient(to bottom, var(--surface), #14171b99);box-shadow:var(--shadow-card);padding:16px 18px}.exam-results-card--by-section{grid-column:span 2}.exam-results-card h4{letter-spacing:.08em;text-transform:uppercase;color:var(--accent-strong);margin:0 0 12px;font-size:.78rem;font-weight:700}.exam-scoring-list,.exam-priorities-list,.exam-section-breakdown{gap:8px;margin:0;padding:0;list-style:none;display:grid}.exam-scoring-list li{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface-alt);justify-content:space-between;align-items:baseline;gap:12px;padding:10px 12px;display:flex}.exam-scoring-list li.is-active{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 12px var(--accent-glow)}.exam-scoring-list strong{color:var(--text);font-size:.9rem;font-weight:700}.exam-scoring-list span{color:var(--muted-strong);text-align:right;font-size:.82rem}.exam-priorities-list li{color:var(--muted-strong);padding-left:16px;font-size:.86rem;line-height:1.55;position:relative}.exam-priorities-list li:before{content:"";background:var(--accent);border-radius:50%;width:6px;height:6px;position:absolute;top:.55em;left:0}.exam-section-breakdown{gap:12px}.exam-section-breakdown-head{justify-content:space-between;align-items:center;gap:10px;margin-bottom:6px;display:flex}.exam-section-breakdown-title{color:var(--text);font-size:.86rem;font-weight:500}.exam-section-breakdown-head strong{color:var(--text);font-variant-numeric:tabular-nums;font-size:.86rem;font-weight:700}.exam-section-breakdown-bar{background:#ffffff0f;border-radius:999px;height:6px;overflow:hidden}.exam-section-breakdown-fill{background:linear-gradient(90deg, var(--accent), var(--accent-strong));height:100%;transition:width .4s var(--ease)}@media (width<=980px){.exam-hero{grid-template-columns:1fr}.exam-hero-stats{grid-auto-columns:minmax(0,1fr);grid-auto-flow:column}.exam-stat{min-width:0}.exam-results-grid{grid-template-columns:1fr}.exam-results-card--by-section{grid-column:auto}.exam-results-banner{flex-direction:column;align-items:start}.exam-results-verdict{text-align:left}}@media (width<=720px){.page-exams.is-active{width:100%;min-width:0;max-width:100%;padding:8px 10px calc(max(env(safe-area-inset-bottom) - 30px, 2px) + 48px);overflow:hidden auto}.exam-shell,.exam-hero,.exam-results,.exam-results-banner,.exam-results-card,.exam-footer{width:100%;min-width:0;max-width:100%}.exam-shell{gap:10px;overflow-x:clip}.exam-hero{border-radius:var(--radius-md);gap:8px;padding:10px 12px}.exam-title-wrap{width:100%;min-width:0}.exam-hero-text h2,.exam-title-select{font-size:.98rem}.exam-title-select{text-overflow:ellipsis;width:100%;min-width:0;padding-right:24px;overflow:hidden}.exam-title-info{flex:0 0 18px}.exam-tooltip{width:calc(100vw - 32px);max-width:calc(100vw - 32px)}.exam-hero-stats{grid-template-columns:repeat(3,minmax(0,1fr));grid-auto-flow:row;grid-auto-columns:initial;gap:6px;width:100%}.exam-stat{border-radius:var(--radius-sm);gap:2px;padding:6px}.exam-stat span{letter-spacing:.03em;overflow-wrap:anywhere;font-size:.56rem}.exam-stat strong{font-size:1rem}.exam-progress{height:4px}.exam-sections,.exam-section,.exam-question-list{min-width:0;max-width:100%}.exam-sections{gap:16px}.exam-section{gap:10px}.exam-section-title{padding-bottom:6px;font-size:.9rem}.exam-question{border-radius:var(--radius-md);padding:12px 14px}.exam-question-head{min-width:0}.exam-q-prompt,.exam-explanation p,.exam-scoring-list strong,.exam-scoring-list span,.exam-priorities-list li,.exam-section-breakdown-title{overflow-wrap:anywhere}.exam-option{grid-template-columns:auto minmax(0,1fr) auto;gap:8px;padding:10px 12px;font-size:.9rem}.exam-option-letter{width:24px;height:24px}.exam-option-mark{width:20px;height:20px}.exam-footer{padding:4px calc(env(safe-area-inset-right) + 10px) max(env(safe-area-inset-bottom) - 30px, 2px) calc(env(safe-area-inset-left) + 10px);background:var(--surface);-webkit-backdrop-filter:none;z-index:35;border-bottom:0;border-left:0;border-right:0;border-radius:0;flex-wrap:nowrap;gap:8px;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -1px #ffffff0a}.exam-footer-status{flex:auto;min-width:0}.exam-submit-btn{flex:none;min-width:100px;min-height:32px;padding:0 12px;font-size:.86rem}.exam-jump-btn{text-overflow:ellipsis;white-space:nowrap;width:100%;min-width:0;min-height:32px;padding:0 10px;overflow:hidden}}[data-theme=light] .exam-progress,[data-theme=light] .exam-section-breakdown-bar{background:#00000014}[data-theme=light] .exam-q-badge--ok{color:#16a34a;background:#16a34a1a;border-color:#16a34a4d}[data-theme=light] .exam-q-badge--bad{color:#dc2626;background:#dc26261a;border-color:#dc26264d}[data-theme=light] .exam-option.is-answer{background:#16a34a14;border-color:#16a34a80}[data-theme=light] .exam-option.is-wrong{background:#dc262614;border-color:#dc262680}[data-theme=light] .exam-option-mark{color:#16a34a;background:#16a34a33}[data-theme=light] .exam-option-mark--bad{color:#dc2626;background:#dc262633}[data-theme=light] .exam-status-ok{color:#16a34a}[data-theme=light] .exam-status-bad{color:#dc2626}[data-theme=light] .exam-results-banner.is-pass{background:linear-gradient(135deg,#16a34a14,#16a34a05);border-color:#16a34a66;box-shadow:0 0 24px #16a34a0f}[data-theme=light] .exam-results-banner.is-fail{background:linear-gradient(135deg,#dc26260f,#dc262605);border-color:#dc262666}[data-theme=light] .exam-footer{background:#ffffffe6}[data-theme=light] .is-pass .exam-results-percent{color:#16a34a}[data-theme=light] .is-fail .exam-results-percent{color:#dc2626}[data-theme=light] .exam-question.is-correct{box-shadow:0 0 14px #16a34a0f, var(--shadow-card);border-color:#16a34a66}[data-theme=light] .exam-question.is-incorrect,[data-theme=light] .exam-question.is-unanswered{box-shadow:0 0 14px #dc26260f, var(--shadow-card);border-color:#dc262666}.page-interactive{width:100%;max-width:1600px;margin-inline:auto}.page-interactive.is-active{flex-direction:column;gap:14px;display:flex}body[data-page=interactive] .page-interactive{flex:1;width:100vw;max-width:none;min-height:calc(100dvh - 90px);margin-left:calc(50% - 50vw);padding:0 16px 16px}body[data-page=interactive] .page-interactive.is-active{flex-direction:column;display:flex}body[data-page=interactive] .ix-layout{flex:1;min-height:0}body[data-page=interactive] .ix-canvas-wrap{height:100%}body[data-page=interactive] .ix-canvas{height:100%;min-height:0}.ix-header{flex-wrap:wrap;align-items:flex-start;gap:12px}.ix-header-actions{align-items:center;gap:8px;display:flex}.ix-energize{background:var(--accent);color:#1a1300;border:1px solid var(--accent-strong);border-radius:var(--radius-sm);letter-spacing:.02em;box-shadow:var(--shadow-card);transition:filter .2s var(--ease), box-shadow .2s var(--ease);padding:10px 18px;font-size:.92rem;font-weight:700}.ix-energize:hover{filter:brightness(1.06);box-shadow:var(--shadow-glow)}.ix-energize.is-on{background:linear-gradient(180deg, var(--accent-strong), var(--accent));box-shadow:0 0 18px #f59e0b73, var(--shadow-card)}.ix-tabs{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);align-self:flex-start;gap:4px;padding:4px;display:inline-flex}.ix-3d-wrap{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);flex:auto;min-height:600px;display:flex;overflow:hidden}.ix-3d-wrap>*{flex:auto;width:100%;min-width:0;height:100%}body[data-page=interactive] .ix-3d-wrap{min-height:calc(100dvh - 200px)}.ix-tab{border-radius:var(--radius-sm);color:var(--muted);transition:color .16s var(--ease), background .16s var(--ease);background:0 0;border:none;padding:8px 14px;font-size:.9rem;font-weight:600}.ix-tab:hover{color:var(--text)}.ix-tab.is-active{background:var(--surface-alt);color:var(--accent-strong);box-shadow:inset 0 0 0 1px var(--accent-muted)}.ix-toolbar{border-bottom:1px solid var(--line);flex-wrap:wrap;gap:8px;padding:8px 0;display:flex}.ix-toolbar-group{flex-wrap:wrap;gap:6px;display:flex}.ix-layout{grid-template-columns:168px minmax(0,1fr) 280px;align-items:start;gap:14px;display:grid}.ix-palette{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);flex-direction:column;gap:6px;padding:10px;display:flex;position:sticky;top:12px}.ix-palette-item{background:var(--surface-alt);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);text-align:left;transition:border-color .16s var(--ease), background .16s var(--ease);align-items:center;gap:8px;padding:8px 10px;display:flex}.ix-palette-item:hover{border-color:var(--accent-muted);background:var(--surface-soft)}.ix-palette-item.is-active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-strong)}.ix-palette-icon{width:38px;height:22px;color:var(--muted-strong);justify-content:center;align-items:center;display:inline-flex}.ix-palette-item.is-active .ix-palette-icon{color:var(--accent-strong)}.ix-palette-label{font-size:.86rem;font-weight:600}.ix-palette-hint{color:var(--muted);margin:6px 4px 0;font-size:.74rem;line-height:1.4}.ix-canvas-wrap{flex-direction:column;gap:8px;min-width:0;display:flex}.ix-canvas{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);touch-action:none;-webkit-user-select:none;user-select:none;width:100%;height:auto;min-height:min(72vh,720px);display:block}.ix-canvas-bg{fill:url(#ix-grid)}.ix-grid-line{stroke:var(--line);stroke-width:1px}.ix-component{cursor:grab;color:var(--text)}.ix-component:active{cursor:grabbing}.ix-component.is-selected{filter:drop-shadow(0 0 6px var(--accent-glow))}.ix-component.is-hover{filter:drop-shadow(0 0 4px #f59e0b40)}.ix-lead,.ix-batt-short,.ix-switch-lever,.ix-lamp-cross,.ix-resistor{stroke:var(--text);stroke-width:2px;stroke-linecap:round;fill:none}.ix-batt-long{stroke:var(--text);stroke-width:3px;stroke-linecap:round}.ix-pin{fill:var(--text)}.ix-lamp-bulb{fill:var(--surface-alt);stroke:var(--text);stroke-width:2px;transition:fill .16s var(--ease), filter .16s var(--ease)}.ix-lamp-bulb.is-on{fill:color-mix(in srgb, var(--accent) calc(var(--lamp-glow,0) * 100%), var(--surface-alt));filter:drop-shadow(0 0 calc(var(--lamp-glow,0) * 12px) var(--accent))}.ix-breaker-body{fill:var(--surface-alt);stroke:var(--text);stroke-width:1.5px}.ix-breaker-body.is-tripped{fill:#ef535029;stroke:var(--danger)}.ix-glyph-label{fill:var(--muted-strong);text-anchor:middle;font-size:11px;font-family:var(--font-ui)}.ix-glyph-meta{fill:var(--muted);text-anchor:middle;font-size:10px;font-family:var(--font-ui);pointer-events:none}.ix-glyph-rating{fill:var(--text);text-anchor:middle;font-size:10px;font-weight:700;font-family:var(--font-ui)}.ix-terminal{fill:var(--surface);stroke:var(--accent);stroke-width:1.5px;cursor:crosshair;transition:fill .12s var(--ease), stroke .12s var(--ease), r .12s var(--ease)}.ix-terminal:hover{fill:var(--accent)}.ix-terminal.is-pending{fill:var(--accent);stroke:var(--accent-strong)}.ix-wire{stroke:var(--muted-strong);stroke-width:2.5px;stroke-linecap:round;stroke-linejoin:round;fill:none;cursor:pointer;transition:stroke .16s var(--ease), stroke-width .16s var(--ease)}.ix-wire:hover{stroke:var(--accent-strong)}.ix-wire.is-selected{stroke:var(--accent);stroke-width:3.5px}.ix-wire.is-pending{stroke:var(--accent);stroke-dasharray:4 4;pointer-events:none}.ix-wire.is-live{stroke:var(--accent);stroke-dasharray:8 6;animation:1.2s linear infinite ix-current-flow}@keyframes ix-current-flow{to{stroke-dashoffset:-28px}}.ix-tip{pointer-events:none}.ix-tip-bg{fill:#14171beb;stroke:var(--accent-muted);stroke-width:1px}.ix-tip-text{fill:var(--accent-strong);text-anchor:middle;font-size:10px;font-weight:600;font-family:var(--font-ui)}.ix-status{background:var(--surface-soft);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--muted-strong);padding:10px 14px;font-size:.84rem}.ix-status.is-warning{color:#fda4a0;background:#ef535014;border-color:#ef535066}.ix-info{flex-direction:column;gap:12px;display:flex;position:sticky;top:12px}.ix-info-block{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:12px 14px}.ix-info-block h3{text-transform:uppercase;letter-spacing:.06em;color:var(--muted-strong);margin:0 0 8px;font-size:.78rem}.ix-empty{color:var(--muted);margin:0;font-size:.84rem}.ix-selected{flex-direction:column;gap:8px;display:flex}.ix-selected-row{justify-content:space-between;align-items:baseline;gap:8px;display:flex}.ix-selected-kind{text-transform:capitalize;color:var(--accent-strong);font-weight:700}.ix-selected-id{color:var(--muted);font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:.74rem}.ix-field{color:var(--muted-strong);flex-direction:column;gap:4px;font-size:.78rem;display:flex}.ix-field input{background:var(--surface-alt);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);padding:6px 8px;font-size:.9rem}.ix-field input:focus{border-color:var(--accent);outline:none}.ix-selected-actions{flex-wrap:wrap;gap:6px;display:flex}.ix-readout{grid-template-columns:1fr 1fr;gap:8px;margin:6px 0 0;display:grid}.ix-readout>div{background:var(--surface-alt);border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px 8px}.ix-readout dt{text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0;font-size:.66rem}.ix-readout dd{color:var(--accent-strong);margin:2px 0 0;font-size:.92rem;font-weight:700}.ix-tip-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.ix-tip-list li{color:var(--muted-strong);padding-left:14px;font-size:.82rem;line-height:1.45;position:relative}.ix-tip-list li:before{content:"";background:var(--accent);border-radius:50%;width:5px;height:5px;position:absolute;top:8px;left:0}.ix-tip-list kbd{background:var(--surface-alt);border:1px solid var(--border);color:var(--text);border-radius:4px;padding:1px 5px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:.74rem}.ix-welcome-backdrop{z-index:50;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#0b0d10b3;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.ix-welcome{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);width:100%;max-width:460px;box-shadow:var(--shadow-card-hover);padding:22px 24px}.ix-welcome h3{color:var(--accent-strong);margin:0 0 12px}.ix-welcome ol{color:var(--muted-strong);flex-direction:column;gap:8px;margin:0 0 16px;padding-left:20px;font-size:.92rem;line-height:1.5;display:flex}.ix-welcome strong{color:var(--text)}.ix-welcome-go{background:var(--accent);color:#1a1300;border:1px solid var(--accent-strong);border-radius:var(--radius-sm);width:100%;padding:10px 18px;font-weight:700}.ix-welcome-go:hover{filter:brightness(1.06)}@media (width<=980px){.ix-layout{grid-template-columns:1fr}.ix-palette{flex-flow:wrap;position:static}.ix-palette-item{flex:calc(33% - 6px)}.ix-palette-hint{flex:100%}.ix-info{position:static}}@media (width<=600px){.ix-palette-item{flex:calc(50% - 6px);padding:8px}.ix-palette-label{font-size:.78rem}.ix-energize{padding:8px 14px;font-size:.86rem}}[data-theme=light] .ix-energize{color:#1a1300}[data-theme=light] .ix-tip-bg{fill:#fffffff2;stroke:var(--accent-muted)}[data-theme=light] .ix-glyph-rating{fill:var(--text)}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}