:root{--accent:var(--calc-color-environment);--accent-rgb:163, 230, 53;--accent-transport:#fb923c;--bg-page:var(--calc-bg-page);--bg-card:var(--calc-bg-card);--bg-input:var(--calc-bg-input);--bg-nested:#ffffff08;--text-main:var(--calc-text-primary);--text-dim:var(--calc-text-dim);--text-muted:var(--calc-text-muted);--border:var(--calc-border-subtle);--radius:var(--calc-radius-md)}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-page);color:var(--text-main);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-dim)}.main-container{max-width:1300px;margin:0 auto;padding:24px}.calc-title{margin-bottom:6px;font-size:2rem;font-weight:800}.calc-subtitle{color:var(--text-dim);max-width:680px;margin-bottom:24px;font-size:.95rem}.calc-layout{grid-template-columns:360px 1fr;align-items:start;gap:20px;display:grid}@media (width<=940px){.calc-layout{grid-template-columns:1fr}}.tab-nav{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius) var(--radius) 0 0;border-bottom:none;flex-wrap:wrap;margin-bottom:0;display:flex;overflow:hidden}.tab-btn{color:var(--text-dim);cursor:pointer;white-space:nowrap;background:0 0;border:none;flex:1;padding:12px 14px;font-size:.85rem;font-weight:600;transition:color .2s,background .2s}.tab-btn:hover{color:var(--text-main)}.tab-btn.active{color:var(--accent);background:rgba(var(--accent-rgb), .08);border-bottom:2px solid var(--accent)}.tab-pane{display:none}.tab-pane.active{display:block}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.input-card{border-radius:0 0 var(--radius) var(--radius)}.result-card{border-radius:0 0 var(--radius) var(--radius);padding:20px}.section-title{text-transform:uppercase;letter-spacing:.06em;color:var(--text-dim);margin-top:16px;margin-bottom:14px;font-size:.78rem;font-weight:700}.section-title:first-child{margin-top:0}.form-group{margin-bottom:14px}.form-label{color:var(--text-dim);margin-bottom:5px;font-size:.82rem;font-weight:600;display:block}.glass-input,.glass-select{background:var(--bg-input);border:1px solid var(--border);width:100%;color:var(--text-main);border-radius:8px;outline:none;padding:9px 12px;font-size:.9rem;transition:border-color .2s}.glass-input:focus,.glass-select:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(var(--accent-rgb), .15)}.glass-select{-webkit-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%238888aa'/%3E%3C/svg%3E");background-position:right 10px center;background-repeat:no-repeat;padding-right:28px}.preset-label{color:var(--text-dim);margin-bottom:7px;font-size:.78rem;font-weight:600}.preset-chips{flex-wrap:wrap;gap:6px;margin-bottom:4px;display:flex}.preset-chip{border:1px solid var(--border);background:var(--bg-nested);color:var(--text-dim);cursor:pointer;border-radius:20px;padding:5px 10px;font-size:.75rem;font-weight:600;transition:all .2s}.preset-chip:hover,.preset-chip.active{border-color:var(--accent);color:var(--accent);background:rgba(var(--accent-rgb), .08)}.hero-result{background:linear-gradient(135deg, rgba(var(--accent-rgb), .07) 0%, #ffffff05 100%);border:1px solid rgba(var(--accent-rgb), .2);border-radius:var(--radius);text-align:center;margin-bottom:16px;padding:20px}.hero-label{text-transform:uppercase;letter-spacing:.06em;color:var(--text-dim);margin-bottom:6px;font-size:.78rem;font-weight:700}.hero-value{color:var(--accent);font-size:2.2rem;font-weight:800;font-family:var(--calc-font-mono), monospace;margin-bottom:5px;line-height:1.1}.hero-sub{color:var(--text-dim);font-size:.8rem}.stat-grid{grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:14px;display:grid}.stat-card{background:var(--bg-nested);border:1px solid var(--border);text-align:center;border-radius:10px;padding:12px}.stat-label{text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:4px;font-size:.72rem;font-weight:700}.stat-value{color:var(--text-main);font-size:1.1rem;font-weight:800;font-family:var(--calc-font-mono), monospace}.stat-sub{color:var(--text-muted);margin-top:2px;font-size:.7rem}.formula-strip{flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:12px;display:flex}.formula-pill{font-size:.78rem;font-family:var(--calc-font-mono), monospace;background:rgba(var(--accent-rgb), .08);color:var(--accent);border:1px solid rgba(var(--accent-rgb), .2);border-radius:6px;padding:4px 10px}.alert-box{margin-bottom:12px}.alert{border-radius:8px;margin-bottom:6px;padding:9px 12px;font-size:.83rem;line-height:1.45}.alert-warn{color:#fed7aa;background:#fb923c1a;border:1px solid #fb923c33}.alert-success{color:var(--accent);background:#a3e63514;border:1px solid #a3e63533}.alert-info{color:#93c5fd;background:#60a5fa14;border:1px solid #60a5fa26}.action-bar{flex-wrap:wrap;gap:8px;margin-top:14px;display:flex}.act-btn{border:1px solid var(--border);background:var(--bg-nested);color:var(--text-dim);cursor:pointer;white-space:nowrap;border-radius:8px;padding:8px 14px;font-size:.8rem;font-weight:600;transition:all .2s}.act-btn:hover{border-color:var(--accent);color:var(--accent);background:rgba(var(--accent-rgb), .06)}.chart-section{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);margin-top:16px;padding:20px}.chart-title{color:var(--text-dim);margin-bottom:12px;font-size:.85rem;font-weight:700}.chart-wrap{height:220px;position:relative}.comparison-header{color:var(--text-dim);margin-bottom:6px;font-size:.88rem;font-weight:700}.comparison-sub{color:var(--text-muted);margin-bottom:14px;font-size:.8rem}.comparison-table-wrap{margin-top:16px;overflow-x:auto}.data-table{border-collapse:collapse;width:100%;font-size:.83rem}.data-table th{background:var(--bg-nested);color:var(--text-dim);text-transform:uppercase;letter-spacing:.04em;text-align:left;border-bottom:1px solid var(--border);padding:9px 12px;font-size:.75rem;font-weight:700}.data-table td{color:var(--text-main);border-bottom:1px solid #ffffff0a;padding:9px 12px}.data-table tr:hover td{background:#ffffff05}.savings-card{background:rgba(var(--accent-rgb), .07);border:1px solid rgba(var(--accent-rgb), .2);border-radius:var(--radius);color:var(--text-dim);margin-top:16px;padding:16px;font-size:.88rem;line-height:1.6}.page-sections-outer{max-width:1600px;margin:0 auto;padding:0 1.5rem 3rem}[data-theme=light]{--accent:var(--calc-color-environment);--accent-rgb:63, 98, 18;--accent-transport:#c2410c;--bg-nested:#edf2f9;--text-main:#0f172a;--text-dim:#334155;--text-muted:#64748b}[data-theme=light] body{background:#e8edf5}[data-theme=light] .card,[data-theme=light] .input-card,[data-theme=light] .result-card,[data-theme=light] .chart-section{background:#fff;border-color:#0000001a;box-shadow:0 2px 10px #0000000f}[data-theme=light] .tab-nav{background:#fff;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:#3f6212;background:#3f621214;border-bottom-color:#3f6212}[data-theme=light] .glass-input,[data-theme=light] .glass-select{color:#0f172a;background:#f0f4f9;border-color:#00000026}[data-theme=light] .glass-input:focus,[data-theme=light] .glass-select:focus{border-color:#3f6212;box-shadow:0 0 0 2px #3f62121f}[data-theme=light] .glass-select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%2364748B'/%3E%3C/svg%3E")}[data-theme=light] .glass-input::placeholder{color:#00000059}[data-theme=light] .hero-result{background:linear-gradient(135deg,#3f62120f 0%,#00000005 100%);border-color:#3f621233}[data-theme=light] .hero-value{color:#3f6212}[data-theme=light] .stat-card{background:#edf2f9;border-color:#0000001a}[data-theme=light] .stat-label{color:#64748b}[data-theme=light] .stat-value{color:#0f172a}[data-theme=light] .stat-sub{color:#94a3b8}[data-theme=light] .formula-pill{color:#3f6212;background:#3f621214;border-color:#3f62122e}[data-theme=light] .alert-warn{color:#78350f;background:#fffbeb;border-color:#d9770659}[data-theme=light] .alert-success{color:#14532d;background:#f0fdf4;border-color:#16a34a59}[data-theme=light] .alert-info{color:#1e3a5f;background:#eff6ff;border-color:#3b82f659}[data-theme=light] .act-btn{color:#64748b;background:#f0f4f9;border-color:#0000001f}[data-theme=light] .act-btn:hover{color:#3f6212;background:#3f62120f;border-color:#3f6212}[data-theme=light] .preset-chip{color:#64748b;background:#f0f4f9;border-color:#0000001f}[data-theme=light] .preset-chip:hover,[data-theme=light] .preset-chip.active{color:#3f6212;background:#3f621214;border-color:#3f6212}[data-theme=light] .data-table th{color:#64748b;background:#edf2f9;border-bottom-color:#0000001a}[data-theme=light] .data-table td{color:#0f172a;border-bottom-color:#0000000f}[data-theme=light] .data-table tr:hover td{background:#f0f4f9}[data-theme=light] .savings-card{color:#334155;background:#3f62120f;border-color:#3f621233}@media (width<=480px){.main-container{padding:16px 12px}.calc-title{font-size:1.5rem}.stat-grid{grid-template-columns:1fr 1fr}.tab-btn{padding:10px 8px;font-size:.77rem}.hero-value{font-size:1.8rem}}