:root{--accent:#00d1c1;--bg-app:#050510;--bg-card:#0d0d1f;--bg-input:#111128;--text-primary:#fff;--text-secondary:#88a;--text-muted:#557;--cyan:#00f3ff;--purple:#bc13fe;--green:#10b981;--red:#f43f5e;--amber:#f59e0b;--border:#ffffff14;--radius:12px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-app);color:var(--text-primary);min-height:100vh;font-family:Inter,sans-serif;line-height:1.5}a{color:inherit;text-decoration:none}.calc-breadcrumb{color:var(--text-muted);padding:10px 24px;font-size:.79rem}.calc-breadcrumb a{color:var(--text-secondary)}.main-container{max-width:1200px;margin:0 auto;padding:24px}.calc-title{margin-bottom:8px;font-size:2rem;font-weight:700}.calc-subtitle{color:var(--text-secondary);margin-bottom:24px}.tab-nav{border-bottom:1px solid var(--border);margin-bottom:24px;display:flex}.tab-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-1px;padding:10px 22px;font-family:inherit;font-size:.9rem;transition:all .2s}.tab-btn:hover{color:var(--text-primary)}.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:340px 1fr;align-items:start;gap:20px;display:grid}@media (width<=900px){.calc-layout{grid-template-columns:1fr}}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.input-card{border-left:3px solid var(--cyan)}.result-card{border-left:3px solid var(--purple)}.form-group{margin-bottom:16px}.form-label{color:var(--text-secondary);margin-bottom:6px;font-size:.82rem;font-weight:500;display:block}.form-input,.form-select{background:var(--bg-input);border:1px solid var(--border);width:100%;color:var(--text-primary);border-radius:8px;padding:10px 14px;font-family:inherit;font-size:.92rem;transition:border-color .2s}.form-input:focus,.form-select:focus{border-color:var(--accent);outline:none}.form-select option{background:var(--bg-card)}.inline-inputs{grid-template-columns:1fr 1fr;gap:8px;display:grid}.section-title{margin-bottom:14px;font-size:1rem;font-weight:700}.hero-result{text-align:center;border-radius:var(--radius);background:linear-gradient(135deg,#00d1c114,#00f3ff0a);border:1px solid #00d1c133;margin-bottom:20px;padding:24px}.hero-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:6px;font-size:.78rem}.hero-value{color:var(--accent);font-size:2.2rem;font-weight:800;line-height:1.1}.hero-sub{color:var(--text-secondary);margin-top:6px;font-size:.87rem}.stat-grid{grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:20px;display:grid}@media (width<=600px){.stat-grid{grid-template-columns:repeat(2,1fr)}}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--purple);border-radius:var(--radius);padding:13px}.stat-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:5px;font-size:.71rem}.stat-value{color:var(--text-primary);font-size:1.05rem;font-weight:700}.formula-strip{flex-wrap:wrap;gap:8px;margin-bottom:20px;display:flex}.formula-pill{color:var(--accent);white-space:nowrap;background:#00d1c11a;border:1px solid #00d1c14d;border-radius:20px;padding:5px 14px;font-size:.75rem}.alert-stack{flex-direction:column;gap:8px;margin-bottom:20px;display:flex}.alert{border-left:3px solid;border-radius:8px;padding:10px 14px;font-size:.84rem}.alert-info{color:#7fffd4;background:#00d1c114;border-color:#00d1c1}.alert-success{border-color:var(--green);color:#6ee7b7;background:#10b98114}.alert-warn{border-color:var(--amber);color:#fcd34d;background:#f59e0b14}.shape-chips{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.shape-chip{border:1px solid var(--border);background:var(--bg-input);color:var(--text-secondary);cursor:pointer;border-radius:8px;padding:7px 14px;font-size:.83rem;transition:all .2s}.shape-chip.active{border-color:var(--accent);color:var(--accent);background:#00d1c11a}.data-table{border-collapse:collapse;width:100%;font-size:.87rem}.data-table th{color:var(--accent);text-align:left;border-bottom:1px solid var(--border);background:#00d1c11a;padding:10px 14px;font-weight:600}.data-table td{color:var(--text-secondary);border-bottom:1px solid #ffffff0a;padding:9px 14px}.data-table tr:hover td{background:#ffffff05}.pitch-visual{background:var(--bg-input);border:1px solid var(--border);text-align:center;border-radius:8px;margin-bottom:16px;padding:16px}.faq-section{max-width:1200px;margin:48px auto 0;padding:0 24px 48px}.faq-section h2{margin-bottom:20px;font-size:1.5rem}.faq-item{border:1px solid var(--border);border-radius:8px;margin-bottom:8px;overflow:hidden}.faq-q{cursor:pointer;justify-content:space-between;align-items:center;padding:13px 18px;font-size:.93rem;font-weight:500;display:flex}.faq-a{color:var(--text-secondary);padding:0 18px 13px;font-size:.87rem;line-height:1.6;display:none}.faq-item.open .faq-a{display:block}.related-section{max-width:1200px;margin:0 auto;padding:0 24px 48px}.related-section h2{margin-bottom:16px;font-size:1.3rem}.related-grid{grid-template-columns:repeat(auto-fill,minmax(185px,1fr));gap:12px;display:grid}.related-card{background:var(--bg-card);border:1px solid var(--border);color:var(--text-secondary);border-radius:8px;padding:13px;font-size:.87rem;transition:all .2s}.related-card:hover{border-color:var(--accent);color:var(--text-primary)}.site-footer{border-top:1px solid var(--border);text-align:center;color:var(--text-muted);padding:24px;font-size:.81rem}@media (width<=768px){.main-container{padding:16px}.calc-title{font-size:1.5rem}.tab-btn{padding:8px 12px;font-size:.81rem}}.chip-group{flex-wrap:wrap;gap:.5rem;margin-bottom:.75rem;display:flex}.chip{border:1px solid var(--border);background:var(--bg-input);color:var(--text-secondary);cursor:pointer;border-radius:20px;padding:.35rem .9rem;font-family:inherit;font-size:.83rem;transition:all .2s}.chip:hover{border-color:var(--accent);color:var(--text-primary)}.chip.active{color:var(--accent);border-color:var(--accent);background:#00d1c11f;font-weight:600}.btn-calculate{background:linear-gradient(135deg,var(--cyan),var(--purple));color:#000;cursor:pointer;border:none;border-radius:8px;width:100%;margin-top:.5rem;padding:.75rem;font-family:inherit;font-size:1rem;font-weight:700;transition:opacity .2s}.btn-calculate:hover{opacity:.9}.units-toggle{background:var(--bg-input);border-radius:8px;gap:4px;padding:3px;display:flex}.units-toggle button{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:5px 12px;font-family:inherit;font-size:.82rem;transition:all .2s}.units-toggle button.active{background:var(--accent);color:#000;font-weight:700}.solve-chips{flex-wrap:wrap;gap:6px;margin-bottom:14px;display:flex}.solve-chip{border:1px solid var(--border);background:var(--bg-input);color:var(--text-secondary);cursor:pointer;border-radius:8px;padding:6px 14px;font-family:inherit;font-size:.83rem;transition:all .2s}.solve-chip.active{border-color:var(--accent);color:var(--accent);background:#00d1c11a}.split-table{border-collapse:collapse;width:100%;font-size:.85rem}.split-table th{color:var(--accent);text-align:left;border-bottom:1px solid var(--border);background:#00d1c11a;padding:8px 12px;font-weight:600}.split-table td{color:var(--text-secondary);border-bottom:1px solid #ffffff0a;padding:8px 12px}.split-table tr:hover td{background:#ffffff05}.table-wrapper{margin-top:1rem;overflow-x:auto}.faq-q span{color:var(--accent);flex-shrink:0;font-size:1.2rem}.faq-item.open .faq-q span{transform:rotate(45deg)}.faq-q{justify-content:space-between;align-items:center;display:flex}.site-footer a{color:var(--accent)}.page-header{margin-bottom:1.5rem}.breadcrumb{color:var(--text-muted);margin-bottom:.5rem;font-size:.79rem}.page-title{margin-bottom:.25rem;font-size:2rem;font-weight:800}.page-sub{color:var(--text-secondary);font-size:.92rem}.hidden{display:none!important}.zone-row-z1 td:first-child{border-left:3px solid #60a5fa}.zone-row-z2 td:first-child{border-left:3px solid #34d399}.zone-row-z3 td:first-child{border-left:3px solid #f59e0b}.zone-row-z4 td:first-child{border-left:3px solid #f97316}.zone-row-z5 td:first-child{border-left:3px solid #ef4444}.highlight-row td{color:var(--accent);font-weight:700;background:#00d1c114!important}[data-theme=light]{--bg-app:#f1f5f9;--bg-card:#ffffffeb;--bg-input:#e2e8f0;--text-primary:#0f172a;--text-secondary:#334155;--text-muted:#64748b;--cyan:#0891b2;--purple:#7c3aed;--green:#059669;--red:#dc2626;--amber:#d97706;--border:#0000001a;--accent:var(--accent)}[data-theme=light] body{background:var(--bg-app);color:var(--text-primary)}[data-theme=light] .card{background:var(--bg-card);border-color:#00000014;box-shadow:0 2px 8px #0000000f}[data-theme=light] .form-input,[data-theme=light] .form-select{color:#0f172a;background:#fff;border-color:#0000001f}[data-theme=light] .form-input:focus,[data-theme=light] .form-select:focus{border-color:var(--accent,#0891b2)}[data-theme=light] .hero-value{text-shadow:none}[data-theme=light] .stat-card,[data-theme=light] .stat-grid .stat-card{background:#00000008;border-color:#00000014}[data-theme=light] .stat-card:hover{border-color:#0000002e}[data-theme=light] .tab-nav{background:#00000008}[data-theme=light] .tab-btn{color:#475569}[data-theme=light] .tab-btn:hover{color:#0f172a;background:#0000000a}[data-theme=light] .tab-btn.active{color:var(--accent,#0891b2);background:#0ea5e91a}[data-theme=light] .formula-strip{background:#00000008}[data-theme=light] .formula-pill{background:#0000000a;border-color:#0000001a}[data-theme=light] .alert{border-color:#0000001a}[data-theme=light] .alert-info{color:#2563eb;background:#3b82f614;border-color:#3b82f633}[data-theme=light] .alert-success{color:#059669;background:#05966914;border-color:#05966933}[data-theme=light] .alert-warn,[data-theme=light] .alert-warning{color:#d97706;background:#d9770614;border-color:#d9770633}[data-theme=light] .alert-danger{color:#dc2626;background:#dc262614;border-color:#dc262633}[data-theme=light] .rm-table th{color:#0f172a;border-bottom-color:#00000026}[data-theme=light] .rm-table td{color:#334155;border-bottom-color:#0000000f}[data-theme=light] .rm-table tr:hover td{color:#0f172a;background:#00000008}[data-theme=light] .rm-table tr.highlight td{color:#0f172a;background:#0ea5e914}[data-theme=light] .data-table th{color:#0f172a}[data-theme=light] .data-table td{color:#334155}[data-theme=light] .data-table tr:hover td{background:#00000008}[data-theme=light] .faq-section h2,[data-theme=light] .faq-section .faq-heading{color:#0f172a}[data-theme=light] .faq-item{background:#fff;border-color:#0000001a}[data-theme=light] .faq-q{color:#0f172a}[data-theme=light] .faq-a{color:#334155}[data-theme=light] .faq-item.open{border-color:var(--accent,#0891b2);background:#0ea5e90a}[data-theme=light] .related-card{background:#00000005;border-color:#00000014}[data-theme=light] .related-card:hover{border-color:var(--accent,#0891b2)}[data-theme=light] .site-footer{color:#475569;border-top-color:#0000001a}[data-theme=light] .back-to-top{color:#334155;background:#fff;border-color:#0000001f;box-shadow:0 2px 8px #0000001a}[data-theme=light] .mode-toggle{background:#0000000a}[data-theme=light] .mode-btn{color:#475569}[data-theme=light] .mode-btn.active{color:var(--accent,#0891b2);background:#0ea5e91a}[data-theme=light] .chip{color:#334155;background:#0000000a;border-color:#0000001a}[data-theme=light] .chip:hover,[data-theme=light] .chip.active{border-color:var(--accent,#0891b2);color:var(--accent,#0891b2)}[data-theme=light] .btn-action,[data-theme=light] .action-btn{color:#334155;background:#0000000a;border-color:#0000001f}[data-theme=light] .btn-action:hover,[data-theme=light] .action-btn:hover{border-color:var(--accent,#0891b2);color:var(--accent,#0891b2)}[data-theme=light] .btn-primary,[data-theme=light] .btn-calculate{color:var(--accent,#0891b2);background:linear-gradient(135deg,#0ea5e926,#0ea5e914);border-color:#0ea5e959}[data-theme=light] .calc-breadcrumb,[data-theme=light] .calc-breadcrumb a{color:#64748b}[data-theme=light] .calc-breadcrumb a:hover{color:var(--accent,#0891b2)}[data-theme=light] input,[data-theme=light] select{color-scheme:light}[data-theme=light] .input-with-prefix,[data-theme=light] .input-with-suffix,[data-theme=light] .input-with-adornment,[data-theme=light] .input-wrapper{background:#fff;border-color:#0000001f}[data-theme=light] .preset-card,[data-theme=light] .scenario-card{background:#00000005;border-color:#00000014}[data-theme=light] .preset-card:hover,[data-theme=light] .scenario-card:hover{border-color:var(--accent,#0891b2)}