:root{--bg-dark:#050510;--card:#0d0d1f;--card2:#111827;--input-bg:#1a1a2e;--border:#ffffff12;--text-main:#fff;--text-dim:#88a;--text-muted:#666680;--accent:var(--calc-color-math);--accent-raw:#818cf8;--prime-color:#22d3ee;--composite-color:#a855f7;--font-sans:"Plus Jakarta Sans", sans-serif;--font-mono:"JetBrains Mono", monospace}[data-theme=light],[data-theme=light] body{background-color:#e8edf5}[data-theme=light]{--bg-dark:#e8edf5;--card:#fff;--card2:#f0f4f9;--input-bg:#edf2f9;--border:#0000001f;--text-main:#0f172a;--text-dim:#334155;--text-muted:#64748b;--accent:var(--calc-color-math);--accent-raw:#4f46e5;--prime-color:#0891b2;--composite-color:#7c3aed}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--calc-bg-page);color:var(--calc-text-primary);font-family:var(--font-sans);min-height:100vh}.glass-navbar{z-index:100;backdrop-filter:blur(12px);background:#050510eb;border-bottom:1px solid #818cf81f;align-items:center;gap:0;height:60px;padding:0 1.5rem;display:flex;position:sticky;top:0}[data-theme=light] .glass-navbar{backdrop-filter:blur(12px);background:#f8fafcf2;border-bottom-color:#4f46e52e}.nav-link.active{color:var(--accent);font-weight:700}.page-header{max-width:1600px;margin:0 auto;padding:1.5rem 1.5rem .75rem}.page-title{color:var(--text-main);letter-spacing:-.02em;margin:.25rem 0;font-size:clamp(1.5rem,3vw,2.1rem);font-weight:800}.page-subtitle{color:var(--text-dim);margin-top:.4rem;font-size:.95rem}.outer-tabs{border-bottom:1px solid var(--border);gap:.25rem;max-width:1600px;margin:.75rem auto 0;padding:0 1.5rem;display:flex;overflow-x:auto}.tab-btn{color:var(--text-dim);cursor:pointer;font-family:var(--font-sans);white-space:nowrap;background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-1px;padding:.6rem 1rem;font-size:.85rem;font-weight:600;transition:color .15s,border-color .15s}.tab-btn:hover{color:var(--text-main)}.tab-btn.active{color:var(--accent);border-bottom-color:var(--accent)}.tab-content{display:none}.tab-content.active{display:block}main{max-width:1600px;margin:0 auto;padding:1.25rem 1.5rem 2rem}.calc-layout{grid-template-columns:340px 1fr;align-items:start;gap:1.25rem;display:grid}@media (width<=1024px){.calc-layout{grid-template-columns:1fr}}.input-card,.result-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:1.25rem}[data-theme=light] .input-card,[data-theme=light] .result-card{box-shadow:0 2px 12px #00000014}.card-title{letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);margin-bottom:1rem;font-size:.7rem;font-weight:700}.input-group{margin-bottom:1rem}.input-label{color:var(--text-dim);margin-bottom:.35rem;font-size:.78rem;font-weight:600;display:block}.glass-input{background:var(--input-bg);border:1px solid var(--border);width:100%;color:var(--text-main);font-family:var(--font-sans);appearance:none;border-radius:8px;outline:none;padding:.55rem .85rem;font-size:.95rem;transition:border-color .15s}.glass-input:focus{border-color:var(--accent)}.glass-select{cursor:pointer}[data-theme=light] .glass-input{color:#0f172a;background:#edf2f9;border-color:#00000026}[data-theme=light] .glass-input:focus{border-color:var(--accent)}.preset-row{flex-wrap:wrap;gap:.4rem;display:flex}.preset-chip{background:var(--input-bg);border:1px solid var(--border);color:var(--text-dim);cursor:pointer;font-family:var(--font-mono);border-radius:6px;padding:.3rem .65rem;font-size:.78rem;transition:all .15s}.preset-chip:hover{border-color:var(--accent);color:var(--accent)}[data-theme=light] .preset-chip{color:#334155;background:#f0f4f9;border-color:#0000001f}[data-theme=light] .preset-chip:hover{border-color:var(--accent);color:var(--accent)}.error-box{color:#fb7185;background:#fb71851f;border:1px solid #fb71854d;border-radius:8px;margin-bottom:1rem;padding:.6rem .85rem;font-size:.82rem}[data-theme=light] .error-box{color:#be123c;background:#fff1f2;border-color:#ef44444d}.hero-result{text-align:center;border-bottom:1px solid var(--border);margin-bottom:1rem;padding:1rem 0 .75rem}.hero-value{font-family:var(--font-mono);color:var(--accent);overflow-wrap:break-word;font-size:clamp(1.1rem,2.5vw,1.7rem);font-weight:700;line-height:1.3}.hero-label{color:var(--text-muted);margin-top:.3rem;font-size:.78rem}.stat-grid{grid-template-columns:1fr 1fr;gap:.6rem;margin-bottom:1rem;display:grid}.stat-cell{background:var(--input-bg);border:1px solid var(--border);border-radius:8px;padding:.55rem .75rem}[data-theme=light] .stat-cell{background:#edf2f9;border-color:#0000001a}.stat-cell-label{color:var(--text-muted);margin-bottom:.2rem;font-size:.68rem}.stat-cell-value{font-family:var(--font-mono);color:var(--text-main);font-size:1rem;font-weight:700}.steps-section{margin-bottom:1rem}.steps-title{letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted);margin-bottom:.5rem;font-size:.7rem;font-weight:700}.steps-list{flex-direction:column;gap:.25rem;max-height:220px;display:flex;overflow-y:auto}.step-line{font-family:var(--font-mono);color:var(--text-dim);border-bottom:1px solid #ffffff08;padding:.2rem 0;font-size:.8rem}[data-theme=light] .step-line{color:#334155;border-bottom-color:#0000000d}.step-line strong{color:var(--accent)}.step-line.step-prime{color:var(--prime-color)}.action-row{gap:.5rem;margin-top:.75rem;display:flex}.action-btn{background:var(--input-bg);border:1px solid var(--border);color:var(--text-dim);cursor:pointer;font-family:var(--font-sans);border-radius:8px;padding:.45rem .9rem;font-size:.8rem;font-weight:600;transition:all .15s}.action-btn:hover{border-color:var(--accent);color:var(--accent)}[data-theme=light] .action-btn{color:#334155;background:#f0f4f9;border-color:#0000001f}[data-theme=light] .action-btn:hover{border-color:var(--accent);color:var(--accent)}.tree-panel{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:1.5rem}[data-theme=light] .tree-panel{box-shadow:0 2px 12px #00000014}.tree-header{margin-bottom:1rem}.tree-title{color:var(--text-main);font-size:1.1rem;font-weight:700}.tree-subtitle{color:var(--text-muted);margin-top:.25rem;font-size:.8rem}.tree-canvas-wrap{background:var(--card2);border:1px solid var(--border);border-radius:10px;width:100%;min-height:320px;position:relative;overflow:hidden}[data-theme=light] .tree-canvas-wrap{background:#f0f4f9;border-color:#0000001a}#factor-tree-canvas{width:100%;display:block}.tree-empty{text-align:center;color:var(--text-muted);padding:3rem 1rem;font-size:.9rem}.factors-panel{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:1.5rem}[data-theme=light] .factors-panel{box-shadow:0 2px 12px #00000014}.factors-title{color:var(--text-main);margin-bottom:1rem;font-size:1.1rem;font-weight:700}.factors-stat-row{flex-wrap:wrap;gap:1rem;margin-bottom:1.25rem;display:flex}.factors-stat{flex-direction:column;align-items:flex-start;display:flex}.factors-stat-val{font-family:var(--font-mono);color:var(--accent);font-size:1.3rem;font-weight:700}.factors-stat-lbl{color:var(--text-muted);margin-top:.1rem;font-size:.72rem}.factor-chip-grid{flex-wrap:wrap;gap:.4rem;display:flex}.factor-chip{background:var(--input-bg);border:1px solid var(--border);font-family:var(--font-mono);color:var(--text-dim);border-radius:6px;padding:.3rem .6rem;font-size:.82rem;transition:border-color .12s,color .12s}.factor-chip.is-prime{color:var(--prime-color);border-color:#22d3ee66}[data-theme=light] .factor-chip{color:#334155;background:#f0f4f9;border-color:#0000001f}[data-theme=light] .factor-chip.is-prime{color:var(--prime-color);border-color:#0891b266}.primes-count{color:var(--text-dim);margin-bottom:.75rem;font-size:.85rem}[data-theme=light] .primes-count{color:#475569}.page-sections-outer{max-width:1600px;margin:0 auto;padding:0 1.5rem 3rem}.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}