: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:minmax(0,1fr);overflow:hidden}}.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 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#00d1c14d;border-radius:20px;padding:5px 14px;font-size:.74rem}.alert-stack{flex-direction:column;gap:8px;margin-bottom:16px;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}.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}.toast{z-index:9999;border-radius:10px;max-width:320px;padding:12px 18px;font-size:.88rem;animation:.25s fadeInUp;position:fixed;bottom:24px;right:24px}.toast-success{color:#fff;background:#10b981f2;box-shadow:0 4px 20px #0006}.toast-warn{color:#fff;background:#f59e0bf2;box-shadow:0 4px 20px #0006}.toast-error{color:#fff;background:#ef4444f2;box-shadow:0 4px 20px #0006}@keyframes fadeInUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.inline-inputs{grid-template-columns:1fr 1fr;gap:8px;display:grid}@media (width<=768px){.main-container{padding:16px}.calc-title{font-size:1.5rem}.tab-btn{padding:8px 12px;font-size:.81rem}}[data-theme=light]{--bg-app:#e8edf5;--bg-card:#fff;--bg-input:#f0f4f9;--text-primary:#0f172a;--text-secondary:#334155;--text-muted:#64748b;--cyan:#0891b2;--purple:#7c3aed;--green:#059669;--red:#dc2626;--amber:#d97706;--border:#0000001a;--accent:#0f766e}[data-theme=light] body{background:var(--bg-app);color:var(--text-primary)}[data-theme=light] .calc-breadcrumb,[data-theme=light] .calc-breadcrumb a{color:#64748b}[data-theme=light] .calc-breadcrumb a:hover{color:var(--accent)}[data-theme=light] .card{background:#fff;border-color:#0000001a;box-shadow:0 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.stat-card{border-color:#0000001a;border-left-color:var(--purple);background:#edf2f9;box-shadow:0 1px 3px #0000000d}[data-theme=light] .stat-label{color:#64748b}[data-theme=light] .stat-value{color:#0f172a}[data-theme=light] .tab-nav{border-bottom-color:#0000001a}[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);border-bottom-color:var(--accent);background:#0f766e0f}[data-theme=light] .formula-strip{background:#00000005}[data-theme=light] .formula-pill{color:var(--accent);background:#0f766e14;border-color:#0f766e40}[data-theme=light] .alert-info{color:#0e7490;background:#eff9fb;border-color:#0e749066}[data-theme=light] .alert-success{color:#059669;background:#f0fdf4;border-color:#05966966}[data-theme=light] .alert-warn{color:#d97706;background:#fffbeb;border-color:#d9770666}[data-theme=light] .data-table th{color:var(--accent);background:#0f766e14;border-bottom-color:#0000001f}[data-theme=light] .data-table td{color:#334155;border-bottom-color:#0000000f}[data-theme=light] .data-table tr:hover td{background:#f0f4f9}[data-theme=light] .cost-row{border-bottom-color:#00000012}[data-theme=light] .cost-label{color:#475569}[data-theme=light] .cost-range{color:var(--accent)}[data-theme=light] .cost-total{background:#0f766e0f}[data-theme=light] .cost-total .cost-label{color:#0f172a}[data-theme=light] .install-check{background:#fff;border-color:#0000001a}[data-theme=light] .install-check summary{color:#0f172a}[data-theme=light] .install-check summary:after{color:#64748b}[data-theme=light] .install-check p{color:#475569}[data-theme=light] .install-check[open]{border-color:#0f766e59}[data-theme=light] .proj-chart-wrap{background:#00000005;border-color:#0f766e40}[data-theme=light] .proj-chart-title{color:var(--accent)}[data-theme=light] .proj-cost-range{background:#0f766e12;border-color:#0f766e40}[data-theme=light] .proj-cost-low{color:#059669}[data-theme=light] .proj-cost-est{color:var(--accent)}[data-theme=light] .proj-cost-high{color:#d97706}[data-theme=light] .proj-cost-label{color:#64748b}[data-theme=light] .proj-interp-card{border-left-color:var(--accent);background:#eff9fb}[data-theme=light] .proj-interp-title{color:var(--accent)}[data-theme=light] .proj-interp-text{color:#334155}[data-theme=light] .pitch-svg-wrap{background:#f0f4f9;border-color:#0f766e33}[data-theme=light] .season-chip.ok{color:#d97706;background:#d9770614;border-color:#d977064d}[data-theme=light] .season-chip.best{color:#059669;background:#05966914;border-color:#05966959}[data-theme=light] .season-chip.bad{color:#dc2626;background:#dc26260f;border-color:#dc262640}[data-theme=light] .season-chip.current{outline-color:currentColor}[data-theme=light] .season-tip-box{color:#475569;background:#f0f4f9;border-color:#0000001a}[data-theme=light] .ob-card{background:#0f766e0d;border-color:#0f766e33}[data-theme=light] .ob-num{color:var(--accent)}[data-theme=light] .ob-card h3{color:#0f172a}[data-theme=light] .ob-card p{color:#475569}[data-theme=light] .fp2{background:#7c3aed0d;border-color:#7c3aed33}[data-theme=light] .fp2-label{color:#7c3aed}[data-theme=light] .fp2-desc{color:#475569}[data-theme=light] .g-item2{background:#f0f4f9;border-color:#0000001a}[data-theme=light] .g-item2 dt{color:var(--accent)}[data-theme=light] .g-item2 dd{color:#475569}[data-theme=light] .ex-card2{background:#fff;border-color:#0000001a;box-shadow:0 1px 4px #0000000f}[data-theme=light] .ex-card2 h3{color:#0f172a}[data-theme=light] .ex-card2 p{color:#475569}[data-theme=light] .ex-badge2{color:var(--accent);background:#0f766e1a}[data-theme=light] .rel-card2{color:#475569;background:#fff;border-color:#0000001a;box-shadow:0 1px 3px #0000000d}[data-theme=light] .rel-card2:hover{border-color:var(--accent);color:var(--accent);background:#0f766e0a}[data-theme=light] .rc-title2{color:#0f172a}[data-theme=light] .article-body2{color:#475569}[data-theme=light] .article-body2 h3{color:#0f172a}[data-theme=light] .act-btn2{color:#334155;background:#f0f4f9;border-color:#0000001f}[data-theme=light] .act-btn2:hover{color:var(--accent);background:#0f766e14;border-color:#0f766e59}[data-theme=light] .faq-section-extra .faq-item{background:#fff;border-color:#0000001a;border-radius:10px;box-shadow:0 1px 4px #0000000d}[data-theme=light] .faq-section-extra .faq-q{color:#0f172a}[data-theme=light] .faq-section-extra .faq-q:after{color:#64748b}[data-theme=light] .faq-section-extra .faq-item.open .faq-q:after{color:var(--accent)}[data-theme=light] .faq-section-extra .faq-a{color:#475569}[data-theme=light] .faq-section-extra .faq-item.open{border-color:#0f766e59;border-left:3px solid var(--accent)}[data-theme=light] .chart-note{color:#64748b}.formula-pills2{margin-bottom:3rem}.fp2-title{margin-bottom:1rem;font-size:1.1rem;font-weight:700}.fp2-grid{grid-template-columns:repeat(3,1fr);gap:.75rem;display:grid}@media (width<=700px){.fp2-grid{grid-template-columns:repeat(2,1fr)}}.fp2-pill{background:#00f3ff0f;border:1px solid #00f3ff26;border-radius:10px;flex-direction:column;gap:4px;padding:.75rem 1rem;display:flex}[data-theme=light] .fp2-pill{background:#0e74900f;border-color:#0e749033}.fp2-name{color:var(--text-dim);text-transform:uppercase;letter-spacing:.04em;font-size:.72rem}.fp2-eq{font-family:var(--font-mono);color:var(--cyan);font-size:.82rem;font-weight:600}[data-theme=light] .fp2-eq{color:#0e7490}.faq-section{margin-bottom:3rem}.faq-title{margin-bottom:1rem;font-size:1.1rem;font-weight:700}.faq-list{flex-direction:column;display:flex}.faq-item{border-bottom:1px solid var(--border)}.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(--font-mono);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:"‘2";color:var(--cyan)}.faq-item__question:hover{color:var(--cyan)}.faq-item__answer{color:var(--text-dim);padding:0 4px 14px;font-size:.85rem;line-height:1.75}[data-theme=light] .faq-list{gap:8px}[data-theme=light] .faq-item{background:#fff;border:1px solid #0000001a;border-radius:10px;overflow:hidden;box-shadow:0 1px 4px #0000000f}[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:#0e7490}[data-theme=light] .faq-item__answer{color:#475569;border-top:1px solid #0000000f;padding:12px 16px 16px}[data-theme=light] .faq-item[open]{border-color:#0e749066 #0e749066 #0e749066 #0e7490;border-left-style:solid;border-left-width:3px}.how-title{margin-bottom:1.5rem;font-size:1.25rem;font-weight:700}.how-steps{flex-direction:column;gap:1rem;list-style:none;display:flex}.how-step{color:var(--text-dim,#88a);align-items:flex-start;gap:1rem;font-size:.9rem;line-height:1.7;display:flex}.how-num{background:var(--cyan,#00f3ff);color:#050510;font-family:var(--font-mono,monospace);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;min-width:28px;height:28px;font-size:.85rem;font-weight:700;display:flex}[data-theme=light] .how-num{color:#fff;background:#0e7490}.how-step strong{color:var(--text-main,#fff)}.gloss-section2{margin-bottom:3rem}.gs2-title{margin-bottom:1rem;font-size:1.1rem;font-weight:700}.gs2-grid{grid-template-columns:repeat(2,1fr);gap:1rem;display:grid}@media (width<=700px){.gs2-grid{grid-template-columns:1fr}}.gs2-item{background:var(--card,#ffffff0a);border:1px solid var(--border,#ffffff1a);color:var(--text-dim,#88a);border-radius:10px;padding:1rem;font-size:.83rem;line-height:1.7}[data-theme=light] .gs2-item{background:#fff;border-color:#0000001a;box-shadow:0 1px 3px #0000000d}.gs2-item strong{color:var(--text-main,#fff)}@media 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