*{box-sizing:border-box;margin:0;padding:0}:root{--bg-dark:#050510;--card:#ffffff0a;--input-bg:#ffffff0d;--border:#ffffff1a;--cyan:#00f3ff;--purple:#bc13fe;--accent:#00f3ff;--text-main:#fff;--text-dim:#88a;--text-muted:#556;--font-mono:"JetBrains Mono", monospace}body{color:var(--text-main);background:var(--bg-dark) radial-gradient(circle at 10% 20%, #00f3ff0f 0%, transparent 22%), radial-gradient(circle at 90% 80%, #bc13fe0f 0%, transparent 22%);min-height:100vh;font-family:Inter,sans-serif}a{color:inherit;text-decoration:none}input::-webkit-outer-spin-button,input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}input[type=number]{-moz-appearance:textfield;appearance:textfield}.breadcrumb-nav{max-width:1040px;margin:12px auto 0;padding:0 24px}.breadcrumb{color:var(--text-dim);flex-wrap:wrap;gap:4px;font-size:.78rem;list-style:none;display:flex}.breadcrumb li+li:before{content:"›";margin-right:4px}.breadcrumb a{color:var(--text-dim);transition:color .2s}.breadcrumb a:hover{color:var(--cyan)}.calc-hero{text-align:center;padding:28px 24px 8px}.calc-title{background:linear-gradient(135deg, var(--cyan) 0%, var(--purple) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:8px;font-size:2rem;font-weight:800}.calc-subtitle{color:var(--text-dim);max-width:620px;margin:0 auto;font-size:.92rem}.tab-control{flex-wrap:wrap;gap:8px;max-width:1040px;margin:20px auto 16px;padding:0 24px;display:flex}.tab-btn{border:1px solid var(--border);color:var(--text-dim);cursor:pointer;background:0 0;border-radius:20px;padding:8px 18px;font-size:.85rem;font-weight:500;transition:all .2s}.tab-btn:hover{color:var(--text-main);border-color:#ffffff40}.tab-btn.active{background:var(--accent);color:#000;border-color:var(--accent);font-weight:700}.tab-panel{display:none}.tab-panel.active{display:block}.calc-layout{grid-template-columns:1fr 1fr;gap:20px;max-width:1040px;margin:0 auto;padding:0 24px 32px;display:grid}.input-card,.result-card{border-radius:14px;padding:20px}.input-card{background:var(--card);border:1px solid var(--border);border-left:3px solid var(--cyan)}.result-card{background:var(--card);border:1px solid var(--border);border-left:3px solid var(--purple)}.card-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.card-title{font-size:1rem;font-weight:700}.field-note{color:var(--text-muted);margin-left:4px;font-size:.72rem;font-weight:400}.input-row{grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px;display:grid}.field-group{flex-direction:column;gap:6px;display:flex}.field-label{color:var(--text-dim);font-size:.8rem;font-weight:600}.glass-input,.glass-select{background:var(--input-bg);border:1px solid var(--border);width:100%;height:40px;color:var(--text-main);border-radius:8px;outline:none;padding:6px 10px;font-size:.85rem;transition:border-color .2s}.glass-input:focus,.glass-select:focus{border-color:var(--accent)}.glass-select{color-scheme:dark;background-color:#0d0d1f}.glass-select option{background-color:#0d0d1f}.hidden{display:none!important}.exp-chips{flex-wrap:wrap;gap:6px;margin-top:6px;display:flex}.exp-chip{border:1px solid var(--border);color:var(--text-dim);cursor:pointer;background:0 0;border-radius:16px;padding:6px 14px;font-size:.82rem;font-weight:500;transition:all .2s}.exp-chip:hover{color:var(--text-main);border-color:#00f3ff66}.exp-chip.active{border-color:var(--accent);color:var(--accent);background:#00f3ff1f;font-weight:700}.hero-result{text-align:center;border-bottom:1px solid var(--border);margin-bottom:14px;padding:16px 0}.hero-label{color:var(--text-dim);margin-bottom:4px;font-size:.78rem;display:block}.hero-value{font-size:3rem;font-weight:800;font-family:var(--font-mono);background:linear-gradient(135deg, var(--cyan), var(--purple));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.hero-unit{color:var(--text-dim);margin-left:4px;font-size:1rem}.coeff-strip{grid-template-columns:repeat(4,1fr);gap:6px;margin-bottom:12px;display:grid}.coeff-cell{border:1px solid var(--border);text-align:center;background:#ffffff0a;border-radius:8px;padding:8px 6px}.coeff-label{color:var(--text-dim);margin-bottom:2px;font-size:.7rem;font-weight:600;display:block}.coeff-value{font-size:1rem;font-weight:700;font-family:var(--font-mono);color:var(--accent);display:block}.coeff-note{color:var(--text-muted);margin-top:2px;font-size:.62rem;display:block}.qh-row{background:#00f3ff0d;border:1px solid #00f3ff26;border-radius:8px;align-items:baseline;gap:6px;margin-bottom:12px;padding:8px 12px;display:flex}.qh-label{color:var(--text-dim);flex:1;font-size:.8rem}.qh-value{font-size:1.1rem;font-weight:700;font-family:var(--font-mono);color:var(--cyan)}.qh-unit{color:var(--text-dim);font-size:.78rem}.pressure-table-wrap{margin-bottom:10px;overflow-x:auto}.pressure-table{border-collapse:collapse;width:100%;font-size:.8rem}.pressure-table th{text-align:left;color:var(--text-dim);border-bottom:1px solid var(--border);padding:7px 8px;font-size:.75rem;font-weight:600}.pressure-table td{font-family:var(--font-mono);border-bottom:1px solid #ffffff0a;padding:7px 8px;font-size:.8rem}.pressure-table tr:last-child td{border-bottom:none}.pressure-table tr:hover td{background:#ffffff08}.zone-cell{font-family:Inter,sans-serif;font-size:.78rem;font-weight:600}.zone-ww{color:#00f3ff}.zone-lw{color:#bc13fe}.zone-sw{color:#88a}.zone-rf{color:#f59e0b}.shear-row{background:#bc13fe0f;border:1px solid #bc13fe33;border-radius:8px;align-items:baseline;gap:6px;margin-bottom:12px;padding:8px 12px;display:flex}.shear-label{color:var(--text-dim);flex:1;font-size:.8rem}.shear-value{font-size:1.1rem;font-weight:700;font-family:var(--font-mono);color:var(--purple)}.shear-unit{color:var(--text-dim);font-size:.78rem}.action-row{gap:8px;margin-top:4px;display:flex}.action-btn{border:1px solid var(--border);color:var(--text-main);cursor:pointer;background:#ffffff0f;border-radius:8px;flex:1;padding:9px;font-size:.82rem;transition:all .2s}.action-btn:hover{border-color:var(--accent);background:#ffffff1f}.map-outer{max-width:1040px;margin:0 auto;padding:0 24px 32px}.map-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:24px}.building-diagram-wrap{justify-content:center;align-items:center;gap:20px;margin-bottom:24px;display:flex}.wind-arrow-wrap{align-items:center;display:flex}.wind-arrow{align-items:center;gap:0;display:flex}.wind-arrow-label{color:var(--cyan);letter-spacing:2px;writing-mode:horizontal-tb;margin-right:8px;font-size:.7rem;font-weight:800}.wind-arrow-body{background:var(--cyan);width:60px;height:3px;box-shadow:0 0 8px #00f3ff80}.wind-arrow-head{border-top:10px solid #0000;border-bottom:10px solid #0000;border-left:16px solid var(--cyan);filter:drop-shadow(0 0 4px #00f3ff80);width:0;height:0}.building-diagram{border:2px solid var(--border);border-radius:4px;width:280px;height:180px;position:relative;overflow:visible}.bldg-zone{text-align:center;justify-content:center;align-items:center;display:flex;position:absolute}.zone-ww-diag{background:#00f3ff1a;border-right:2px dashed #00f3ff4d;width:50%;height:100%;top:0;left:0}.zone-lw-diag{background:#bc13fe14;width:50%;height:100%;top:0;right:0}.bldg-roof-diag{text-align:center;background:#f59e0b1a;border:2px dashed #f59e0b59;border-radius:4px 4px 0 0;justify-content:center;align-items:center;height:40px;display:flex;position:absolute;top:-42px;left:0;right:0}.zone-diag-label{color:var(--text-dim);font-size:.72rem;line-height:1.4}.zone-diag-val{font-family:var(--font-mono);font-size:.85rem;font-weight:700}.zone-ww-diag .zone-diag-val{color:var(--cyan)}.zone-lw-diag .zone-diag-val{color:var(--purple)}.bldg-roof-diag .zone-diag-val{color:#f59e0b}.bldg-dim-label{color:var(--text-muted);font-size:.65rem;font-family:var(--font-mono);position:absolute}.bldg-dim-width{bottom:-20px;left:50%;transform:translate(-50%)}.bldg-dim-height{top:50%;right:-60px;transform:translateY(-50%)}.map-section-title{color:var(--text-main);margin-bottom:10px;font-size:.92rem;font-weight:700}.map-note{border:1px solid var(--border);color:var(--text-dim);background:#ffffff08;border-radius:8px;margin-top:12px;padding:10px 14px;font-size:.78rem;line-height:1.6}.reference-wrap{max-width:1040px;margin:0 auto;padding:0 24px 32px}.ref-section{margin-bottom:28px}.ref-section-title{border-bottom:1px solid var(--border);margin-bottom:10px;padding-bottom:6px;font-size:1rem;font-weight:700}.ref-intro{color:var(--text-dim);margin-bottom:10px;font-size:.85rem;line-height:1.6}.ref-note{color:var(--text-muted);margin-top:8px;font-size:.78rem;font-style:italic;line-height:1.6}.ref-table-wrap{margin-top:4px;overflow-x:auto}.ref-table{border-collapse:collapse;width:100%;font-size:.82rem}.ref-table th{text-align:left;color:var(--text-dim);border-bottom:1px solid var(--border);background:#ffffff0f;padding:8px 12px;font-weight:600}.ref-table td{border-bottom:1px solid #ffffff0a;padding:7px 12px}.ref-table tr:last-child td{border-bottom:none}.ref-table tr:hover td{background:#ffffff08}.exp-def-grid{flex-direction:column;gap:10px;display:flex}.exp-def-card{border:1px solid var(--border);background:#ffffff08;border-radius:10px;align-items:flex-start;gap:14px;padding:14px;display:flex}.exp-def-badge{border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;min-width:36px;height:36px;font-size:1.1rem;font-weight:800;display:flex}.exp-B{color:var(--cyan);background:#00f3ff1f;border:1px solid #00f3ff40}.exp-C{color:#f59e0b;background:#f59e0b1f;border:1px solid #f59e0b40}.exp-D{color:var(--purple);background:#bc13fe1f;border:1px solid #bc13fe40}.exp-def-body strong{margin-bottom:4px;font-size:.88rem;display:block}.exp-def-body p{color:var(--text-dim);margin-bottom:4px;font-size:.82rem;line-height:1.55}.exp-def-examples{color:var(--text-muted);font-size:.75rem;font-style:italic}.formula-pills2{flex-wrap:wrap;gap:10px;margin-top:4px;display:flex}.formula-pill{background:#00f3ff0f;border:1px solid #00f3ff2e;border-radius:10px;flex:1;min-width:200px;padding:12px 16px}.pill-label{color:var(--accent);margin-bottom:4px;font-size:.72rem;font-weight:700;display:block}.pill-formula{font-family:var(--font-mono);color:var(--text-main);margin-bottom:4px;font-size:.85rem;display:block}.pill-note{color:var(--text-dim);font-size:.72rem;display:block}.page-sections-outer{max-width:1040px;margin:0 auto;padding:0 24px 40px}.how-section,.gloss-section2,.faq-section,.calc-related{margin-bottom:32px}.how-section h2,.gloss-section2 h2,.faq-section h2,.calc-related h2{border-bottom:1px solid var(--border);margin-bottom:14px;padding-bottom:8px;font-size:1.1rem;font-weight:700}.how-steps{flex-direction:column;gap:10px;list-style:none;display:flex}.how-steps li{align-items:flex-start;gap:12px;display:flex}.step-num{background:var(--accent);color:#000;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;min-width:26px;height:26px;font-size:.78rem;font-weight:800;display:flex}.how-steps li div{color:var(--text-dim);font-size:.88rem;line-height:1.6}.how-steps li strong{color:var(--text-main)}.gloss-grid{grid-template-columns:1fr 1fr;gap:10px;display:grid}.gloss-item{border:1px solid var(--border);color:var(--text-dim);background:#ffffff08;border-radius:8px;padding:10px 12px;font-size:.83rem;line-height:1.5}.gloss-item strong{color:var(--text-main)}.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(--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:"−";color:var(--accent)}.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}.related-grid{grid-template-columns:repeat(4,1fr);gap:10px;display:grid}.related-card{border:1px solid var(--border);text-align:center;background:#ffffff0a;border-radius:10px;flex-direction:column;align-items:center;gap:6px;padding:14px 10px;transition:all .2s;display:flex}.related-card:hover{border-color:var(--cyan);background:#00f3ff0f}.related-icon{font-size:1.4rem}.related-name{color:var(--text-main);font-size:.78rem;font-weight:600}.toast{z-index:9999;pointer-events:none;border-radius:8px;padding:10px 16px;font-size:.85rem;animation:.3s toastIn;position:fixed;bottom:24px;right:24px}.toast-success{color:#fff;background:#10b981e6}.toast-warn{color:#000;background:#f59e0be6}.toast-error{color:#fff;background:#ef4444e6}@keyframes toastIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (width<=900px){.calc-layout{grid-template-columns:1fr}.coeff-strip{grid-template-columns:repeat(4,1fr)}.gloss-grid{grid-template-columns:1fr}.related-grid,.input-row{grid-template-columns:1fr 1fr}.formula-pills2{flex-direction:column}}@media (width<=600px){.calc-title{font-size:1.5rem}.calc-layout{padding:0 12px 24px}.coeff-strip{grid-template-columns:repeat(2,1fr)}.related-grid{grid-template-columns:1fr 1fr}.exp-chips{gap:4px}.exp-chip{padding:5px 10px;font-size:.78rem}.building-diagram-wrap{flex-direction:column}.wind-arrow-wrap{transform:rotate(90deg)}}[data-theme=light]{--bg-dark:#e8edf5;--card:#fffffff2;--input-bg:#edf2f9;--border:#0000001a;--cyan:#0e7490;--purple:#7c3aed;--accent:#0e7490;--text-main:#0f172a;--text-dim:#334155;--text-muted:#64748b}[data-theme=light] body{background:#e8edf5}[data-theme=light] .input-card{border-left-color:#0e7490}[data-theme=light] .result-card{border-left-color:#7c3aed}[data-theme=light] .calc-title{background:linear-gradient(135deg,#0e7490 0%,#7c3aed 100%);-webkit-background-clip:text;background-clip:text}[data-theme=light] .hero-value{background:linear-gradient(135deg,#0e7490,#7c3aed);-webkit-background-clip:text;background-clip:text}[data-theme=light] .tab-btn.active{color:#fff;background:#0e7490;border-color:#0e7490}[data-theme=light] .exp-chip.active{color:#0e7490;background:#0e74901f;border-color:#0e7490}[data-theme=light] .exp-chip:hover{border-color:#0e749066}[data-theme=light] .glass-input,[data-theme=light] .glass-select{color:#0f172a;background:#edf2f9;border-color:#00000026}[data-theme=light] .glass-select{color-scheme:light;background-color:#edf2f9}[data-theme=light] .glass-select option{color:#0f172a;background-color:#fff}[data-theme=light] .coeff-cell{background:#edf2f9;border-color:#0000001a}[data-theme=light] .coeff-value{color:#0e7490}[data-theme=light] .coeff-note{color:#64748b}[data-theme=light] .qh-row{background:#0e74900f;border-color:#0e749033}[data-theme=light] .qh-value{color:#0e7490}[data-theme=light] .shear-row{background:#7c3aed0f;border-color:#7c3aed33}[data-theme=light] .shear-value{color:#7c3aed}[data-theme=light] .pressure-table td{border-bottom-color:#0000000f}[data-theme=light] .pressure-table tr:hover td{background:#f5f8fc}[data-theme=light] .pressure-table th{color:#475569;border-bottom-color:#0000001a}[data-theme=light] .zone-ww{color:#0e7490}[data-theme=light] .zone-lw{color:#7c3aed}[data-theme=light] .zone-sw{color:#475569}[data-theme=light] .zone-rf{color:#a16207}[data-theme=light] .map-card{background:#fff;border-color:#0000001a;box-shadow:0 1px 4px #0000000f}[data-theme=light] .map-note{color:#475569;background:#f0f4f9;border-color:#0000001a}[data-theme=light] .building-diagram{border-color:#0003}[data-theme=light] .zone-ww-diag{background:#0e749014;border-right-color:#0e74904d}[data-theme=light] .zone-lw-diag{background:#7c3aed0f}[data-theme=light] .bldg-roof-diag{background:#a1620714;border-color:#a162074d}[data-theme=light] .zone-ww-diag .zone-diag-val{color:#0e7490}[data-theme=light] .zone-lw-diag .zone-diag-val{color:#7c3aed}[data-theme=light] .bldg-roof-diag .zone-diag-val{color:#a16207}[data-theme=light] .wind-arrow-body{box-shadow:none;background:#0e7490}[data-theme=light] .wind-arrow-head{filter:none;border-left-color:#0e7490}[data-theme=light] .wind-arrow-label{color:#0e7490}[data-theme=light] .ref-section-title{border-bottom-color:#0000001a}[data-theme=light] .ref-table th{color:#334155;background:#f0f4f9}[data-theme=light] .ref-table td{border-bottom-color:#0000000f}[data-theme=light] .ref-table tr:hover td{background:#f5f8fc}[data-theme=light] .exp-def-card{background:#fff;border-color:#0000001a;box-shadow:0 1px 4px #0000000d}[data-theme=light] .exp-B{color:#0e7490;background:#0e74901a;border-color:#0e749040}[data-theme=light] .exp-C{color:#a16207;background:#a162071a;border-color:#a1620740}[data-theme=light] .exp-D{color:#7c3aed;background:#7c3aed1a;border-color:#7c3aed40}[data-theme=light] .formula-pill{background:#0e749012;border-color:#0e749033}[data-theme=light] .pill-label{color:#0e7490}[data-theme=light] .how-section h2,[data-theme=light] .gloss-section2 h2,[data-theme=light] .faq-section h2,[data-theme=light] .calc-related h2{border-bottom-color:#0000001a}[data-theme=light] .step-num{color:#fff;background:#0e7490}[data-theme=light] .gloss-item{background:#f0f4f9;border-color:#0000001a}[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:#0e749059;box-shadow:0 2px 10px #0e749014}[data-theme=light] .faq-item[open]{border-color:#0e749066 #0e749066 #0e749066 #0e7490;border-left-style:solid;border-left-width:3px;box-shadow:0 2px 12px #0e74901a}[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] .related-card{background:#fff;border-color:#0000001a;box-shadow:0 1px 4px #0000000f}[data-theme=light] .related-card:hover{background:#f0f4f9;border-color:#0e749066}[data-theme=light] .action-btn{color:#0f172a;background:#f0f4f9;border-color:#0000001a}[data-theme=light] .action-btn:hover{background:#e2ebf5;border-color:#0e7490}@media print{.glass-navbar,.calc-page-footer,.calc-back-to-top,.tab-nav,.tabs-outer,.outer-tab-nav,.tab-btn,.act-row,.act-row2,.action-bar,.btn-copy,.btn-share,.btn-csv,.btn-pdf,.btn-export-pdf,.share-btn,.copy-btn,.print-btn,.how-section,.formula-pills2,.gloss-section2,.ex-section2,.faq-section,.faq-section-extra,.calc-related,.page-sections-outer{display:none!important}body{color:#000;background:#fff}.result-card,.stat-card,.card,.glass-card,.result-panel{box-shadow:none;page-break-inside:avoid;color:#000;background:#fff;border:1px solid #ccc}.stat-value,.stat-label,.result-value,h1,h2,h3{color:#000;text-shadow:none}.tab-panel{display:block!important}}.act-row{flex-wrap:wrap;gap:.5rem;display:flex}.act-btn{color:#00f3ff;cursor:pointer;background:#00f3ff14;border:1px solid #00f3ff4d;border-radius:8px;padding:.45rem 1rem;font-size:.8rem;transition:background .2s,border-color .2s}.act-btn:hover{background:#00f3ff2e;border-color:#00f3ff}[data-theme=light] .act-btn{color:#0e7490;background:#0e749014;border-color:#0e74904d}[data-theme=light] .act-btn:hover{background:#0e749026}