:root{--accent:var(--calc-color-sports);--bg-app:#050510;--bg-card:#0d0d1f;--bg-input:#111128;--text-main:#f8fafc;--text-dim:#88a;--text-muted:#557;--border:#ffffff14;--radius:12px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-app);color:var(--text-main);min-height:100vh;font-family:Inter,sans-serif;line-height:1.5}a{color:inherit;text-decoration:none}.main-container{max-width:1200px;margin:0 auto;padding:24px}.page-header{margin-bottom:1.5rem}.page-title{margin-bottom:.25rem;font-size:2rem;font-weight:800}.page-sub{color:var(--text-dim);font-size:.92rem}.tab-nav{border-bottom:1px solid var(--calc-border-default);gap:0;margin-bottom:24px;display:flex}.tab-btn{color:var(--text-dim);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-1px;padding:10px 22px;font-size:.9rem;transition:color .2s,border-color .2s}.tab-btn:hover{color:var(--text-main)}.tab-btn.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}.tab-content{display:none}.tab-content.active{display:block}.calc-layout{grid-template-columns:1fr 1fr;align-items:start;gap:20px;display:grid}@media (width<=768px){.calc-layout{grid-template-columns:1fr}}.card{background:var(--calc-bg-card);border:1px solid var(--calc-border-default);border-radius:var(--radius);padding:20px}.input-card{border-left:3px solid var(--calc-cyan)}.result-card{border-left:3px solid var(--accent)}.section-title{margin-bottom:14px;font-size:1rem;font-weight:700}.form-group{margin-bottom:16px}.form-label{color:var(--text-dim);margin-bottom:6px;font-size:.82rem;font-weight:500;display:block}.glass-input{background:var(--bg-input);border:1px solid var(--border);width:100%;color:var(--text-main);border-radius:8px;padding:9px 12px;font-family:inherit;font-size:.95rem;transition:border-color .2s,box-shadow .2s}.glass-input:focus{border-color:var(--calc-cyan);outline:none;box-shadow:0 0 0 3px #22d3ee1f}.glass-input::placeholder{color:var(--text-muted)}.chip-group{flex-wrap:wrap;gap:6px;display:flex}.chip{border:1px solid var(--border);color:var(--text-dim);cursor:pointer;white-space:nowrap;background:#ffffff0a;border-radius:20px;padding:5px 14px;font-size:.82rem;transition:background .2s,color .2s,border-color .2s}.chip:hover{color:var(--text-main);border-color:#fff3}.chip.active{border-color:var(--calc-cyan);color:var(--calc-cyan);background:#22d3ee1f;font-weight:600}.pace-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.pace-grid-3{grid-template-columns:1fr 1fr 1fr;gap:8px;display:grid}.t-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.hero-result{text-align:center;background:#22d3ee0d;border:1px solid #22d3ee1f;border-radius:10px;margin-bottom:20px;padding:28px 16px 20px}.hero-value{font-size:2.8rem;font-weight:800;font-family:var(--calc-font-mono,"JetBrains Mono", monospace);color:var(--calc-cyan);margin-bottom:6px;line-height:1}.hero-label{color:var(--text-dim);text-transform:uppercase;letter-spacing:.05em;margin-bottom:4px;font-size:.85rem}.hero-sub{color:var(--text-muted);font-size:.8rem}.stat-row{grid-template-columns:repeat(5,1fr);gap:8px;margin-bottom:16px;display:grid}@media (width<=480px){.stat-row{grid-template-columns:repeat(3,1fr)}}.stat-cell{border:1px solid var(--border);text-align:center;background:#ffffff08;border-radius:8px;padding:8px 6px}.stat-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:4px;font-size:.7rem}.stat-value{font-size:.88rem;font-weight:700;font-family:var(--calc-font-mono,"JetBrains Mono", monospace);color:var(--text-main)}.race-info{color:var(--text-dim);flex-wrap:wrap;gap:10px;padding:8px 0;font-size:.78rem;display:flex}.race-info span{border:1px solid var(--border);background:#ffffff0a;border-radius:6px;padding:3px 10px}.split-layout{grid-template-columns:1fr;gap:20px;display:grid}.chart-wrap{height:220px;position:relative}.split-table-wrap{overflow-x:auto}.split-table{border-collapse:collapse;width:100%;font-size:.88rem}.split-table th{text-align:left;color:var(--text-dim);border-bottom:1px solid var(--border);text-transform:uppercase;letter-spacing:.04em;white-space:nowrap;padding:8px 10px;font-size:.78rem;font-weight:600}.split-table td{color:var(--text-main);white-space:nowrap;border-bottom:1px solid #ffffff0a;padding:9px 10px}.split-table tr:last-child td{color:var(--calc-cyan);border-bottom:none;font-weight:700}.mono{font-family:var(--calc-font-mono,"JetBrains Mono", monospace)}.page-sections-outer{max-width:1200px;margin:0 auto;padding:0 24px 3rem}.calc-section{margin-bottom:3rem}.calc-section__title{color:var(--text-main);margin-bottom:1rem;font-size:1.35rem;font-weight:700}.faq-list{flex-direction:column;display:flex}.faq-item{border-bottom:1px solid #ffffff0f}.faq-item__question{cursor:pointer;color:var(--text-main);user-select:none;justify-content:space-between;align-items:center;padding:14px 4px;font-size:.9rem;font-weight:600;list-style:none;transition:color .2s;display:flex}.faq-item__question::-webkit-details-marker{display:none}.faq-item__question:after{content:"+";font-family:var(--calc-font-mono,monospace);color:var(--text-dim);flex-shrink:0;margin-left:16px;font-size:1.1rem;transition:color .2s}.faq-item[open] .faq-item__question:after{content:"−";color:var(--accent)}.faq-item__question:hover{color:var(--calc-cyan)}.faq-item__answer{color:var(--text-dim);padding:0 4px 14px;font-size:.85rem;line-height:1.75}.glossary-grid{flex-wrap:wrap;gap:10px;display:flex}.glossary-chip{border:1px solid var(--border);background:#ffffff0a;border-radius:8px;padding:10px 14px;font-size:.83rem;line-height:1.5}.glossary-chip__term{color:var(--calc-cyan);margin-bottom:2px;font-weight:700}.glossary-chip__def{color:var(--text-dim)}.formula-list{flex-wrap:wrap;gap:10px;display:flex}.formula-pill{color:var(--calc-cyan);font-size:.83rem;font-family:var(--calc-font-mono,monospace);background:#22d3ee12;border:1px solid #22d3ee33;border-radius:8px;flex:220px;padding:10px 14px}.formula-pill__label{color:var(--text-dim);text-transform:uppercase;letter-spacing:.05em;margin-bottom:4px;font-family:Inter,sans-serif;font-size:.72rem}.how-steps{flex-direction:column;gap:16px;display:flex}.how-step{align-items:flex-start;gap:14px;display:flex}.step-num{background:var(--accent);color:#000;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:.82rem;font-weight:800;display:flex}.step-body h4{margin-bottom:2px;font-size:.9rem;font-weight:700}.step-body p{color:var(--text-dim);font-size:.83rem;line-height:1.6}[data-theme=light]{--bg-app:#e8edf5;--bg-card:#fff;--bg-input:#f0f4f9;--text-main:#0f172a;--text-dim:#475569;--text-muted:#64748b;--border:#0000001a}[data-theme=light] body{background:var(--bg-app);color:var(--text-main)}[data-theme=light] .card{background:#fff;border-color:#0000001f;box-shadow:0 2px 10px #00000012}[data-theme=light] .input-card{border-left-color:#0891b2}[data-theme=light] .result-card{border-left-color:var(--calc-color-sports,#fb923c)}[data-theme=light] .glass-input{color:#0f172a;background:#f0f4f9;border-color:#00000026}[data-theme=light] .glass-input:focus{border-color:#0891b2;box-shadow:0 0 0 3px #0891b21f}[data-theme=light] .glass-input::placeholder{color:#94a3b8}[data-theme=light] .chip{color:#475569;background:#f0f4f9;border-color:#0000001f}[data-theme=light] .chip:hover{color:#0f172a;border-color:#00000040}[data-theme=light] .chip.active{color:#0891b2;background:#0891b21a;border-color:#0891b2}[data-theme=light] .hero-result{background:#0891b20f;border-color:#0891b233}[data-theme=light] .hero-value{color:#0891b2}[data-theme=light] .hero-label{color:#64748b}[data-theme=light] .hero-sub{color:#94a3b8}[data-theme=light] .stat-cell{background:#edf2f9;border-color:#0000001a}[data-theme=light] .stat-label{color:#64748b}[data-theme=light] .stat-value{color:#0f172a}[data-theme=light] .race-info span{color:#475569;background:#f0f4f9;border-color:#0000001a}[data-theme=light] .tab-btn{color:#64748b}[data-theme=light] .tab-btn:hover{color:#0f172a}[data-theme=light] .tab-btn.active{color:var(--calc-color-sports,#c2410c);border-bottom-color:var(--calc-color-sports,#c2410c)}[data-theme=light] .tab-nav{border-bottom-color:#0000001a}[data-theme=light] .split-table th{color:#64748b;border-bottom-color:#0000001a}[data-theme=light] .split-table td{color:#0f172a;border-bottom-color:#0000000f}[data-theme=light] .split-table tr:last-child td{color:#0891b2}[data-theme=light] .faq-list{gap:8px}[data-theme=light] .faq-item{background:#fff;border:1px solid #0000001a;border-radius:10px;transition:box-shadow .2s,border-color .2s;overflow:hidden;box-shadow:0 1px 4px #0000000f}[data-theme=light] .faq-item:hover{border-color:#0891b259;box-shadow:0 2px 10px #0891b214}[data-theme=light] .faq-item[open]{border-color:#0891b266 #0891b266 #0891b266 #0891b2;border-left-style:solid;border-left-width:3px;box-shadow:0 2px 12px #0891b21a}[data-theme=light] .faq-item__question{color:#0f172a;padding:14px 16px}[data-theme=light] .faq-item__question:after{color:#64748b}[data-theme=light] .faq-item[open] .faq-item__question:after,[data-theme=light] .faq-item__question:hover{color:#0891b2}[data-theme=light] .faq-item__answer{color:#475569;border-top:1px solid #0000000f;padding:12px 16px 16px}[data-theme=light] .glossary-chip{background:#f0f4f9;border-color:#0000001a}[data-theme=light] .glossary-chip__term{color:#0891b2}[data-theme=light] .glossary-chip__def{color:#475569}[data-theme=light] .formula-pill{color:#0891b2;background:#0891b20f;border-color:#0891b233}[data-theme=light] .formula-pill__label{color:#64748b}[data-theme=light] .step-num{background:var(--calc-color-sports,#fb923c);color:#fff}[data-theme=light] .step-body h4{color:#0f172a}[data-theme=light] .step-body p{color:#475569}[data-theme=light] .calc-section__title{color:#0f172a}