:root{--accent:var(--calc-color-environment);--bg-app:#050510;--bg-card:#0d0d1f;--bg-input:#111128;--text-primary:#fff;--text-secondary:#88a;--text-muted:#557;--green:#34d399;--amber:#f59e0b;--red:#fb7185;--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}.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;font-size:.95rem}.tab-nav{border-bottom:1px solid var(--calc-border-default);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:color .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(--calc-bg-card);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-md);padding:20px}.input-card{border-left:3px solid var(--calc-cyan)}.result-card{border-left:3px solid var(--accent)}.form-group{margin-bottom:14px}.form-label{color:var(--text-secondary);margin-bottom:5px;font-size:.82rem;font-weight:500;display:block}.form-label small{color:var(--text-muted);font-size:.75rem;font-weight:400}input[type=text]{background:var(--bg-input);border:1px solid var(--calc-border-default);width:100%;color:var(--text-primary);border-radius:8px;padding:9px 12px;font-family:inherit;font-size:.92rem;transition:border-color .2s}input[type=text]:focus{border-color:var(--accent);outline:none}.input-section-label{text-transform:uppercase;letter-spacing:.07em;color:var(--text-muted);border-bottom:1px solid #ffffff0d;margin:16px 0 10px;padding-bottom:6px;font-size:.75rem;font-weight:700}.preset-row{flex-wrap:wrap;gap:8px;margin-bottom:18px;display:flex}.preset-chip{border:1px solid var(--calc-border-default);background:var(--bg-input);color:var(--text-secondary);cursor:pointer;border-radius:20px;padding:6px 14px;font-family:inherit;font-size:.8rem;transition:all .2s}.preset-chip:hover{border-color:var(--accent);color:var(--text-primary)}.preset-chip.active{border-color:var(--accent);color:var(--accent);background:#a3e6351a;font-weight:600}.hero-result{text-align:center;border-radius:var(--calc-radius-md);background:linear-gradient(135deg,#a3e6350f,#22d3ee0a);border:1px solid #a3e6352e;margin-bottom:18px;padding:22px 20px}.hero-label{color:var(--calc-text-muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:6px;font-size:.75rem}.hero-value{color:var(--accent);font-size:2.4rem;font-weight:800;line-height:1.1}.hero-sub{color:var(--text-secondary);margin-top:6px;font-size:.85rem}.stat-grid{grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:18px;display:grid}.stat-card{background:var(--calc-bg-card);border:1px solid var(--calc-border-default);border-radius:10px;padding:13px}.stat-label{color:var(--calc-text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:4px;font-size:.7rem}.stat-value{color:var(--text-primary);font-size:1.05rem;font-weight:700}.stat-unit{color:var(--text-secondary);margin-top:2px;font-size:.72rem}.vs-bar-wrap{margin-top:14px}.vs-bar-label{color:var(--text-secondary);justify-content:space-between;margin-bottom:5px;font-size:.78rem;display:flex}.vs-bar-track{background:#ffffff0f;border-radius:4px;height:8px;overflow:hidden}.vs-bar-fill{background:var(--accent);border-radius:4px;max-width:100%;height:8px;transition:width .5s}.action-bar{flex-wrap:wrap;gap:8px;margin-top:16px;display:flex}.act-btn{color:var(--text-secondary);cursor:pointer;background:#ffffff0a;border:1px solid #ffffff1a;border-radius:8px;padding:7px 16px;font-family:inherit;font-size:.82rem;font-weight:600;transition:all .2s}.act-btn:hover{color:var(--accent);background:#a3e63514;border-color:#a3e6354d}.impact-layout{grid-template-columns:1fr 1fr;align-items:start;gap:20px;display:grid}@media (width<=768px){.impact-layout{grid-template-columns:1fr}}.impact-stat-grid{grid-template-columns:repeat(2,1fr);gap:10px;margin-top:16px;display:grid}.chart-wrap{background:#0003;border:1px solid #a3e63526;border-radius:12px;padding:16px}.chart-title{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:12px;font-size:.83rem;font-weight:700}.interp-card{border-left:4px solid var(--accent);color:#ccc;background:#a3e6350f;border-radius:0 10px 10px 0;margin-top:16px;padding:12px 14px;font-size:.85rem;line-height:1.6}.switch-table{border-collapse:collapse;width:100%;margin-bottom:20px;font-size:.84rem}.switch-table th{color:var(--accent);text-align:left;border-bottom:1px solid var(--calc-border-default);text-transform:uppercase;letter-spacing:.04em;background:#a3e63514;padding:10px 14px;font-size:.78rem;font-weight:600}.switch-table td{color:var(--text-secondary);vertical-align:top;border-bottom:1px solid #ffffff0a;padding:10px 14px}.switch-table tr:hover td{background:#ffffff05}.td-item{color:var(--text-primary);font-weight:500}.td-savings{color:var(--green);font-weight:600}.td-cost{color:var(--amber)}.savings-summary{border:1px solid #34d39940;border-left:4px solid var(--green);background:#34d39914;border-radius:0 10px 10px 0;margin-bottom:20px;padding:16px 18px}.savings-summary-value{color:var(--green);margin-bottom:4px;font-size:1.8rem;font-weight:800;line-height:1.1}.savings-summary-label{color:var(--text-secondary);font-size:.82rem}.tips-list{flex-direction:column;gap:10px;display:flex}.tip-item{background:#ffffff05;border:1px solid #ffffff0f;border-radius:10px;align-items:flex-start;gap:12px;padding:12px 14px;display:flex}.tip-icon{flex-shrink:0;margin-top:1px;font-size:1.3rem;line-height:1}.tip-body{color:var(--text-secondary);font-size:.85rem;line-height:1.55}.tip-body strong{color:var(--text-primary);margin-bottom:2px;display:block}.section-title{color:var(--text-primary);margin-bottom:14px;font-size:1rem;font-weight:700}.alert-stack{flex-direction:column;gap:8px;margin-top:14px;display:flex}.alert{border-left:3px solid;border-radius:8px;padding:10px 14px;font-size:.84rem;line-height:1.5}.alert-info{border-color:var(--calc-cyan);color:#7fffd4;background:#22d3ee12}.alert-success{border-color:var(--green);color:#6ee7b7;background:#34d39914}.alert-warn{border-color:var(--amber);color:#fcd34d;background:#f59e0b14}.page-sections-outer{max-width:1200px;margin:0 auto;padding:0 24px 3rem}.faq-list{flex-direction:column;display:flex}.faq-item{border-bottom:1px solid #ffffff0f}.faq-item__question{cursor:pointer;color:var(--text-primary);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);color:var(--text-secondary);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(--accent)}.faq-item__answer{color:var(--text-secondary);padding:0 4px 14px;font-size:.85rem;line-height:1.75}@media (width<=768px){.main-container{padding:16px}.calc-title{font-size:1.5rem}.tab-btn{padding:8px 12px;font-size:.82rem}.stat-grid{grid-template-columns:repeat(2,1fr)}.switch-table th,.switch-table td{padding:8px 10px;font-size:.78rem}.page-sections-outer{padding:0 16px 2rem}}@media (width<=480px){.stat-grid,.impact-stat-grid{grid-template-columns:1fr 1fr}}[data-theme=light] body{color:#0f172a;background:#e8edf5}[data-theme=light] input[type=text]{color:#0f172a;color-scheme:light;background:#f0f4f9;border-color:#00000026}[data-theme=light] input[type=text]:focus{border-color:#3f6212}[data-theme=light] .card{background:#fff;border-color:#0000001f;box-shadow:0 2px 8px #00000014}[data-theme=light] .stat-card{background:#fff;border-color:#0000001f;box-shadow:0 1px 4px #0000000f}[data-theme=light] .stat-label{color:#64748b}[data-theme=light] .stat-value{color:#0f172a}[data-theme=light] .stat-unit{color:#64748b}[data-theme=light] .tab-btn{color:#475569}[data-theme=light] .tab-btn.active{color:#3f6212;border-bottom-color:#3f6212}[data-theme=light] .tab-btn:hover{color:#0f172a}[data-theme=light] .preset-chip{color:#334155;background:#e2e8f0;border-color:#00000026}[data-theme=light] .preset-chip:hover{color:#3f6212;border-color:#3f6212}[data-theme=light] .preset-chip.active{color:#3f6212;background:#3f621214;border-color:#3f6212}[data-theme=light] .hero-result{background:linear-gradient(135deg,#3f62120f,#0e74900a);border-color:#3f621233}[data-theme=light] .hero-label{color:#64748b}[data-theme=light] .hero-value{color:#3f6212}[data-theme=light] .hero-sub{color:#475569}[data-theme=light] .vs-bar-track{background:#00000014}[data-theme=light] .act-btn{color:#475569;background:#0000000a;border-color:#0000001f}[data-theme=light] .act-btn:hover{color:#3f6212;background:#3f621212;border-color:#3f62124d}[data-theme=light] .chart-wrap{background:#00000008;border-color:#3f621226}[data-theme=light] .chart-title{color:#475569}[data-theme=light] .interp-card{color:#334155;background:#3f62120f;border-left-color:#3f6212}[data-theme=light] .switch-table th{color:#3f6212;background:#3f621212;border-color:#0000001a}[data-theme=light] .switch-table td{color:#334155;border-color:#0000000f}[data-theme=light] .switch-table tr:hover td{background:#00000008}[data-theme=light] .td-item{color:#0f172a}[data-theme=light] .td-savings{color:#047857}[data-theme=light] .td-cost{color:#b45309}[data-theme=light] .savings-summary{background:#04785712;border-color:#04785740 #04785740 #04785740 #047857}[data-theme=light] .savings-summary-value{color:#047857}[data-theme=light] .savings-summary-label{color:#475569}[data-theme=light] .tip-item{background:#f0f4f9;border-color:#0000001a}[data-theme=light] .tip-body{color:#334155}[data-theme=light] .tip-body strong{color:#0f172a}[data-theme=light] .alert-info{color:#164e63;background:#eff9fb;border-color:#0e749066}[data-theme=light] .alert-success{color:#14532d;background:#f0fdf4;border-color:#04785766}[data-theme=light] .alert-warn{color:#78350f;background:#fffbeb;border-color:#b4530966}[data-theme=light] .section-title{color:#0f172a}[data-theme=light] .input-section-label{color:#64748b;border-color:#00000014}[data-theme=light] .tab-content{color:#0f172a}[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:hover{border-color:#3f621259;box-shadow:0 2px 10px #3f621214}[data-theme=light] .faq-item[open]{border-color:#3f621266 #3f621266 #3f621266 #3f6212;border-left-style:solid;border-left-width:3px}[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:#3f6212}[data-theme=light] .faq-item__answer{color:#475569;border-top:1px solid #0000000f;padding:12px 16px 16px}[data-theme=light] .vs-bar-label{color:#64748b}