:root{--navy:#10273d;--blue:#12558a;--sky:#eff7fc;--ink:#19334b;--muted:#617387;--line:#dce5ec;--teal:#007b70;--amber:#9b6308;--red:#b44141;--bg:#f4f7fa;--white:#fff;--radius:16px;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);line-height:1.55}a{color:#07588e}a:hover{text-decoration:underline}button,input,select{font:inherit}button{cursor:pointer}.container{max-width:1240px;margin:auto;padding:0 22px}.header{background:var(--navy);color:white}.head-inner{display:flex;gap:22px;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:16px 22px}.brand{font-weight:850;letter-spacing:.6px;color:white;text-decoration:none;font-size:18px}.brand span{color:#4ccef0}nav{display:flex;gap:21px;flex-wrap:wrap}nav a{color:#e2edf4;text-decoration:none;font-size:13px}.hero{background:linear-gradient(118deg,#102b42,#10537a);color:white;padding:44px 0 40px}.eyebrow{font-size:12px;letter-spacing:1.3px;font-weight:800;color:#80dadd;text-transform:uppercase}.hero h1{max-width:850px;font-size:clamp(26px,3.7vw,44px);line-height:1.17;margin:13px 0}.hero p{color:#dbe8ee;max-width:800px;font-size:16px}.hero-tags{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}.hero-tags span{border:1px solid #4e8b9f;border-radius:50px;padding:5px 12px;font-size:12px;background:#ffffff0b}.sec{padding:29px 0}.section-label{color:#006e7c;font-size:12px;text-transform:uppercase;letter-spacing:1.1px;font-weight:800}.section-title{margin:4px 0 14px;font-size:clamp(21px,2.6vw,29px);line-height:1.25}.sub{font-size:14px;color:var(--muted);max-width:830px;margin-bottom:17px}.main-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.12fr);gap:18px}.panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 5px 22px #2d47670c}.panel h3{font-size:18px;margin:0 0 16px}.label{font-size:12px;display:block;font-weight:750;color:#445b6e;margin-bottom:5px}.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{margin-bottom:14px}input,select{display:block;width:100%;border:1px solid #c8d5df;border-radius:9px;background:#fff;padding:11px 12px;min-height:43px;color:var(--ink)}input:focus,select:focus{outline:2px solid #5ba9d0;border-color:#2677a6}.help{display:block;color:var(--muted);font-size:11px;margin-top:4px}.rulebox{background:#eef5f8;border:1px solid #c9e0eb;padding:12px 14px;border-radius:11px;font-size:12px;color:#45606d;margin:3px 0 15px}.actionbar{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.btn{border:0;border-radius:10px;padding:11px 14px;font-weight:750;font-size:13px;background:var(--blue);color:white;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:6px}.btn.secondary{background:#e8f2f8;color:#135b85}.btn.light{background:white;color:#105482;border:1px solid var(--line)}.statgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.stat{background:#f1f6fa;border:1px solid #e0ebf2;border-radius:12px;padding:14px 13px}.stat small{color:#607589;display:block;font-size:11px;line-height:1.2;min-height:26px}.stat strong{font-size:25px;line-height:1.3;color:#133d5c;font-variant-numeric:tabular-nums}.stat.warning strong{font-size:17px;color:#8a5d12}.status{margin:15px 0;border-radius:11px;padding:13px 14px;border:1px solid #edcda3;background:#fff8ea;color:#6f4c0d;font-size:13px}.status.issue{border-color:#e7b3b3;background:#fff4f3;color:#8b3030}.status.soft{border-color:#bdd8e3;background:#edf8fc;color:#245a73}.status strong{display:block;margin-bottom:3px}.diagram{border:1px solid var(--line);border-radius:11px;padding:11px;background:linear-gradient(#fbfdff,#f7fbfc);margin-top:12px}.diagram svg{width:100%;height:auto;max-height:270px;display:block}.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:11px;color:#586d7e;margin-top:7px}.dot{display:inline-block;height:9px;width:9px;border-radius:3px;margin-right:5px}.callout{font-size:12px;line-height:1.5;color:#536d7c;border-left:3px solid #3a96bc;padding-left:12px;margin:13px 0 0}.tabs{display:flex;gap:8px;overflow:auto;padding:2px 0 12px}.tab{border:1px solid #c9dce8;color:#235675;border-radius:50px;background:white;padding:8px 15px;white-space:nowrap;font-size:12px;font-weight:700}.tab.active{background:#145d8b;color:white;border-color:#145d8b}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.post{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column}.post figure{height:148px;margin:0;overflow:hidden;background:#e6f1f7}.post figure img{width:100%;height:100%;object-fit:cover}.post .body{padding:15px;display:flex;flex:1;flex-direction:column}.tag{color:#157b8c;font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.4px}.post h3{margin:8px 0;font-size:17px;line-height:1.34}.post p{font-size:13px;color:var(--muted);margin:0 0 15px}.post a{font-weight:750;font-size:13px;margin-top:auto}.full{grid-column:1/-1}.article{background:white;border:1px solid var(--line);border-radius:14px;padding:22px;margin-bottom:14px}.article h3{margin:0 0 12px;font-size:19px}.article p{font-size:14px;color:#3d576a}.article ul{margin:8px 0 12px;padding-left:20px;color:#3d576a;font-size:14px}.article li{margin:5px 0}.small{font-size:12px;color:#5c7081}.article table{border-collapse:collapse;width:100%;font-size:13px;margin:12px 0;overflow-x:auto}.article th,.article td{border:1px solid #d8e3ea;padding:9px;text-align:center}.article th{background:#eef5f8}.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.gallery figure{margin:0;background:white;border:1px solid var(--line);border-radius:14px;overflow:hidden}.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}.gallery figcaption{padding:12px 14px;font-size:12px;color:#5c6e7c}.source-list{display:grid;gap:10px}.source{background:white;border:1px solid var(--line);border-radius:12px;padding:14px 17px;font-size:13px}.source small{color:#667789;display:block;margin-top:4px}.cta{background:#133a59;color:white;border-radius:16px;padding:25px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}.cta h2{margin:0;font-size:22px}.cta p{margin:6px 0 0;color:#c8dce8;font-size:13px;max-width:700px}.footer{padding:28px 0 40px;color:#65798b;font-size:12px}.print-only{display:none}
@media(max-width:900px){.main-grid{grid-template-columns:1fr}.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.gallery{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.container{padding:0 13px}.header nav{gap:9px}.head-inner{padding:15px 13px}.hero{padding:29px 0}.panel{padding:15px}.two{grid-template-columns:1fr}.cards,.gallery{grid-template-columns:1fr}.stat strong{font-size:22px}.article{padding:16px}.cta{padding:19px}}
@media print{.header nav,.actionbar,.tabs,.btn,.cta,.footer{display:none!important}.hero{color:black;background:white;padding:10px 0}.hero p{color:#333}.hero-tags{display:none}.main-grid{display:block}.panel{break-inside:avoid;box-shadow:none;margin-bottom:12px}.sec{padding:12px 0}.cards,.gallery{display:none}.print-only{display:block}.article{break-inside:avoid}}

/* HCA PCCC v2: group explanation & linked project gallery */
.group-guide{border:1px solid #c9e0eb;background:#f8fbfd;border-radius:12px;margin:0 0 17px;padding:10px 13px;font-size:12px;color:#455c70}
.group-guide summary{cursor:pointer;font-weight:800;color:#154f77;font-size:14px;list-style-position:outside}
.group-guide-sublabel{font-size:11px;color:#697e8c;font-weight:500;margin-left:5px}
.group-guide p{line-height:1.6;margin:11px 0}
.group-guide-note{font-size:12px}
.table-scroll{overflow:auto;max-width:100%;border-radius:8px}
.group-table{border-collapse:collapse;width:100%;min-width:470px;font-size:12px;line-height:1.45;background:white}
.group-table th,.group-table td{border:1px solid #d4e4ed;padding:9px 10px;text-align:left;vertical-align:top}
.group-table thead th{background:#e3f1f8;color:#194763}
.group-table tbody th{white-space:nowrap;color:#17618a}
.group-table tr.selected{background:#eaf9f2}
.real-photo{position:relative;overflow:hidden;background:linear-gradient(135deg,#c9e0ec,#4b92bf 60%,#135880);height:100%;min-height:120px}
.photo-fallback{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:18px;text-align:center;font-size:14px;font-weight:700;color:#eaf8ff}
.real-photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
.gallery-photo{aspect-ratio:4/3}
.gallery .gallery-photo img{aspect-ratio:auto}
.gallery figcaption a{font-weight:700}
.case-hint{background:#edf7fb;border:1px solid #cbe6f1;border-radius:11px;margin-top:12px;padding:12px 13px;color:#365e76;font-size:12px;line-height:1.6}
.case-hint strong{color:#124b70}
.case-hint a{font-weight:700}
@media print{.group-guide{break-inside:avoid}.group-guide summary{list-style:none}.case-hint{break-inside:avoid}}

/* Prevent the wide E.2 table from stretching the mobile layout */
@media(max-width:900px){.main-grid{grid-template-columns:minmax(0,1fr)}.panel{min-width:0}.group-guide{min-width:0}.table-scroll{max-width:100%;overflow-x:auto}}

/* HCA V3 – geometric-proportion SVG and print/mobile hardening */
.diagram-title{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;margin:0 0 12px;font-size:13px;color:#174967}
.ratio-chip{background:#e6f6ff;border:1px solid #b9d9e7;border-radius:50px;padding:5px 11px;font-weight:800;font-size:12px;color:#12577a}
.diagram #hcaPlan{display:block;width:100%;height:auto;max-height:none;min-height:340px;background:#f7fbfd;border-radius:12px;overflow:visible}
.dim-note{font-size:12px;line-height:1.5;color:#49677b;margin:8px 0}
.roof-config{background:#f1f8fe;border:1px solid #c9e5f5;border-radius:11px;padding:13px;margin:0 0 14px}
.roof-config[hidden]{display:none!important}.roof-config .field{margin:0}
.scenario{background:#f0f8fb;border:1px solid #c7e3ed;border-radius:12px;padding:11px 13px;font-size:13px;line-height:1.5;color:#2c5269;margin:13px 0}
.contact-nudge{font-size:12px;line-height:1.6;max-width:400px;color:#e6edf4}.contact-nudge a{color:#a5edf4;font-weight:800}
.legal-date{border-left:3px solid #157ba1;padding:7px 0 7px 13px}
@media(min-width:1080px){.main-grid{grid-template-columns:minmax(0,1.0fr) minmax(0,1.12fr)}}
@media(max-width:600px){.diagram{padding:8px}.diagram #hcaPlan{min-height:280px}.diagram-title{font-size:11px}.ratio-chip{font-size:10px}.roof-config .two{grid-template-columns:1fr}.stat strong{font-size:20px}}
@media print{.diagram #hcaPlan{max-height:480px}.diagram-title{break-inside:avoid}.roof-config{display:none!important}}

/* Additions to the supplied V3, scoped to this standalone application. */
.post[hidden]{display:none!important}#printDate{white-space:pre-line}button:disabled{cursor:not-allowed;opacity:.55}
.breadcrumbs a{color:#07588e;font-weight:600}.stat small{color:#4b6175}.footer{color:#42586c}
fieldset{border:0;border-top:1px solid var(--line);margin:20px 0;padding:16px 0 0;min-width:0}legend{font-weight:800;padding:0 8px 0 0;color:#15577c;font-size:15px}h4{margin:0 0 12px}.factory-fields{min-width:0;padding:12px;background:#f7fafc;border-radius:10px}.field-error{display:block;color:#9a2929;font-size:12px;margin-top:4px;min-height:0}input[aria-invalid=true],select[aria-invalid=true]{border:2px solid #b44141;background:#fff7f6}#inputErrors{border:1px solid #d48585;background:#fff4f1;padding:12px;border-radius:8px;font-size:13px}#inputErrors a{color:#9a2929}.main-grid{align-items:start}.results-panel{min-width:0}.stat strong{overflow-wrap:anywhere}.breadcrumbs{display:flex;gap:9px;flex-wrap:wrap;font-size:12px;padding-top:18px;padding-bottom:4px}.skip-link{position:absolute;left:10px;top:-100px;background:white;padding:12px;z-index:100}.skip-link:focus{top:10px}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #009ac1;outline-offset:3px}.diagram-toolbar{display:flex;align-items:center;gap:9px;margin-bottom:10px}.diagram-toolbar .btn{padding:6px 12px;min-height:36px}.plan-scroll{overflow:auto;max-height:720px;overscroll-behavior:contain;border:1px solid #d8e6ed;border-radius:10px;background:#f7fbfd}.diagram #hcaPlan{width:100%;height:auto;min-height:0;max-height:none;border-radius:0;overflow:visible}.diagram #hcaPerspective{max-height:none;min-height:0;aspect-ratio:700/360}.diagram h4{font-size:14px}#copyFallback{width:100%;min-height:180px;padding:12px;font:13px system-ui;white-space:pre-wrap}.assessment-table{width:100%;min-width:520px;border-collapse:collapse;font-size:12px;line-height:1.5;margin-top:16px}.assessment-table caption{text-align:left;font-weight:800;font-size:14px;margin:0 0 9px}.assessment-table td,.assessment-table th{border:1px solid var(--line);padding:10px;text-align:left;vertical-align:top}.assessment-table th{background:#eff6fa}.assessment-table td:first-child{width:23%;font-weight:700}.check-pass{color:#086755}.check-issue{color:#9c2b2b}.check-missing{color:#8b5800}.check-ref{color:#49677b}.gallery figcaption h3{font-size:17px;margin:0 0 8px}.gallery figcaption p{margin:0 0 10px}.status ul{padding-left:20px;margin-bottom:0}.technical-scope{border-left:4px solid #157ba1;padding:12px 16px;background:#eff7fb}.hero h1{max-width:970px}.article .table-scroll table{min-width:560px}.header a{min-height:24px}.footer{max-width:1240px;margin:auto}.group-guide p{font-size:12px}.statgrid{gap:9px}.stat{padding:12px}.stat small{min-height:30px}.section-title{overflow-wrap:break-word}
@media(min-width:1080px){.main-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.14fr)}}
@media(max-width:600px){.two{grid-template-columns:minmax(0,1fr)}.factory-fields .field{margin-bottom:12px}.plan-scroll{max-height:560px}.diagram-title{font-size:13px}.ratio-chip{font-size:12px}.stat strong{font-size:22px}.hero h1{font-size:29px}.hero-tags{gap:6px}.actionbar .btn{min-height:44px}.gallery img{object-fit:contain;background:#eaf2f7}.assessment-table{min-width:500px}.header nav{gap:12px}.panel{padding:15px}.breadcrumbs{font-size:11px}.scenario{font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
@media print{body{background:#fff;font-size:11px}.container{max-width:100%;padding:0}.hero h1{font-size:22px}.breadcrumbs,form,.diagram-toolbar,#bai-viet,#thu-vien,.skip-link,#copyNotice,#copyFallback{display:none!important}.results-panel{display:block}.main-grid>.panel:first-child{display:none}.main-grid{display:block}.panel{border:0;padding:0;break-inside:auto}.plan-scroll{overflow:visible;max-height:none;border:0}.diagram #hcaPlan{width:100%!important;max-height:460px}.diagram #hcaPerspective{max-height:220px}.table-scroll{overflow:visible}.assessment-table{min-width:0;font-size:10px}.assessment-table tr{break-inside:avoid}.statgrid{grid-template-columns:repeat(4,1fr)}.stat strong{font-size:18px}.article{padding:10px;break-inside:auto}.source{padding:6px}details:not([open])>*:not(summary){display:block!important}.hero{padding:0}.sec{padding:10px 0}.print-only{display:block!important}.status{break-inside:avoid}a{color:#173f5c;text-decoration:none}}