@font-face{font-family:Inter;src:local('Inter');font-display:swap}
.brand .official-logo{display:block;width:186px;height:57px;object-fit:contain}@media(max-width:760px){.brand .official-logo{width:160px;height:49px}}
:root{--ink:#142b3c;--muted:#667788;--line:#dce4e9;--accent:#187a76;--accent-soft:#edf7f4;--bg:#f4f6f8;--blue:#445d77;--danger:#ac4d39}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:13px;line-height:1.5}button,input{font:inherit}button,a,input{outline-offset:4px}button:focus-visible,a:focus-visible{outline:2px solid var(--accent)}button{cursor:pointer}a{color:inherit;text-decoration:none}button{transition:background .15s,border-color .15s}button:disabled{opacity:.45;cursor:not-allowed}button:hover:not(:disabled){filter:brightness(.96)}[hidden]{display:none!important}
.app-header{height:76px;background:#fff;border-bottom:1px solid var(--line);padding:0 3.1%;display:flex;align-items:center;gap:60px}.brand{display:flex;align-items:center;gap:10px;font-size:24px;font-weight:750;letter-spacing:-1.2px}.brand svg{width:31px;height:33px;fill:none;stroke:var(--accent);stroke-width:2}.brand-cad{font-weight:450}.app-header nav{display:flex;align-self:stretch;gap:32px;color:var(--muted);font-size:13px}.app-header nav a{display:flex;align-items:center;border-bottom:2px solid transparent;padding:2px 0 0}.app-header nav .active{color:var(--accent);border-color:var(--accent);font-weight:600}.header-link{margin-left:auto;font-size:12px;font-weight:600}.header-link span{margin-left:12px}
.workspace{max-width:1640px;margin:auto;padding:26px 3.1% 0}.breadcrumb{display:flex;gap:12px;color:#71808e;font-size:11px;margin-bottom:25px}.breadcrumb a:hover{text-decoration:underline}.page-heading{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:26px}.eyebrow{font-size:9px;letter-spacing:1.8px;color:var(--accent);font-weight:750;display:flex;gap:7px;align-items:center}.eyebrow>span{width:5px;height:5px;background:var(--accent);border-radius:50%}h1{font-size:32px;font-weight:650;letter-spacing:-1.1px;line-height:1.25;margin:8px 0 10px;display:flex;align-items:center;gap:13px}.version{color:#70808d;font-size:8px;border:1px solid #cdd9e0;letter-spacing:1px;padding:3px 5px;border-radius:3px}.page-heading p{color:var(--muted);font-size:13px;margin:0}.heading-actions{display:flex;gap:8px;padding-top:18px}.button{border:1px solid #d2dde3;background:white;border-radius:6px;color:var(--ink);font-size:11px;font-weight:600;min-height:38px;padding:9px 13px;white-space:nowrap}.button>span{margin:0 5px}.button.primary{background:var(--accent);border-color:var(--accent);color:white}
.project-bar{min-height:48px;display:flex;align-items:center;gap:25px;background:#fff;border:1px solid var(--line);border-radius:7px;padding:8px 16px;margin-bottom:20px;font-size:11px}.project-bar>div{display:flex;align-items:center;gap:10px;flex:1}.project-dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}.project-bar label{color:#7e8b98;border-right:1px solid var(--line);padding-right:10px}.project-bar input{border:0;width:min(100%,300px);font-size:11px;font-weight:600;color:var(--ink);background:transparent;padding:4px}.units{color:#536577;white-space:nowrap}.units span{padding:0 8px;color:#abb6be}.save-state{border-left:1px solid var(--line);padding-left:20px;color:#7a8791;font-size:10px;white-space:nowrap}
.design-grid{display:grid;grid-template-columns:300px minmax(380px,1fr) 272px;align-items:start;gap:18px}.panel{background:white;border:1px solid var(--line);border-radius:8px;overflow:hidden}.panel-heading{display:flex;align-items:center;justify-content:space-between;min-height:57px;padding:14px 18px;border-bottom:1px solid var(--line);gap:6px}.panel-heading>div{display:flex;align-items:center;gap:9px}.step{font-size:9px;color:#8d9ba5;font-variant-numeric:tabular-nums}h2{font-size:13px;font-weight:650;margin:0;letter-spacing:-.15px}.text-button{border:0;padding:3px 0;background:transparent;color:var(--muted);font-size:10px}.text-button:hover{color:var(--accent)}.tag{font-size:8px;letter-spacing:.8px;color:#7b8d99;font-weight:600;white-space:nowrap}.tabs{display:flex;border-bottom:1px solid var(--line);padding:0 18px;gap:20px}.tabs button{border:0;border-bottom:2px solid transparent;background:transparent;color:#7b8895;padding:15px 0 12px;font-size:11px}.tabs button[aria-selected=true]{color:var(--accent);border-bottom-color:var(--accent);font-weight:650}#wall-form{padding:18px}.wall-type{display:flex;gap:10px;align-items:center;background:#f5f9f9;border:1px solid #d8e7e3;border-radius:5px;padding:13px 9px;margin-bottom:22px}.wall-type svg{width:36px;height:34px;fill:#d8e6e4;stroke:var(--accent);stroke-width:1.5}.wall-type strong{font-size:11px;display:block;font-weight:600}.wall-type span:not(.selected-dot){font-size:8px;color:#7c8f98}.wall-type .selected-dot{margin-left:auto;background:var(--accent);color:white;width:14px;height:14px;border-radius:50%;text-align:center;font-size:9px;line-height:14px}.form-section-label{font-size:8px;letter-spacing:1.3px;color:#83929e;font-weight:700;margin:4px 0 16px}.field{display:block;margin-bottom:16px;min-width:0}.field>span:first-child{display:flex;justify-content:space-between;font-size:10px;margin-bottom:7px;color:#536678}.field i{font-family:Georgia,serif;font-size:11px;color:#81939e;font-weight:normal}.input-unit{display:flex;align-items:center;border:1px solid #dbe3e9;border-radius:5px;overflow:hidden;background:white;min-height:37px}.input-unit:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px #187a7615}.input-unit input{width:100%;min-width:0;border:0;background:transparent;color:#263d4f;padding:9px 10px;outline:none;font-size:12px;font-variant-numeric:tabular-nums}.input-unit input[aria-invalid=true]{background:#fff0e9}.input-unit>span{color:#8a98a5;font-size:10px;padding-right:10px;white-space:nowrap}.field small{display:block;font-size:8px;color:#8b98a3;margin-top:6px}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.derived-value{border-top:1px dashed #dbe4e8;padding:16px 0 5px;display:flex;justify-content:space-between;align-items:center;font-size:10px;color:#637888}.derived-value b{font-weight:400;margin-left:3px}.derived-value strong{font-size:17px;color:var(--ink);font-weight:650}.derived-value small{font-size:10px;color:#7f919e;font-weight:400}.form-footer{display:flex;align-items:center;justify-content:center;gap:6px;color:#7d8e97;font-size:8px;border-top:1px solid var(--line);margin:17px -18px -18px;padding:12px}.live-dot{width:5px;height:5px;background:#65a293;border-radius:50%}.input-note{font-size:10px;line-height:1.7;color:var(--muted);background:#f5f8fa;padding:11px;border-radius:4px}.validation{color:#9e402f;background:#fff0eb;padding:10px;border-radius:4px;font-size:11px;margin-top:12px}
.drawing-toolbar{padding:12px 17px;display:flex;align-items:center;justify-content:space-between;gap:8px}.segmented{display:flex;background:#f0f4f6;border-radius:4px;padding:3px}.segmented button{font-size:9px;border:0;background:transparent;color:#7d8b96;border-radius:3px;padding:5px 11px}.segmented button[aria-pressed=true]{background:white;color:#334c5e;box-shadow:0 1px 3px #15384b14}.drawing-stage{height:458px;position:relative;background-image:radial-gradient(#cdd9df .6px,transparent .6px);background-size:16px 16px;background-color:#fcfdfd;border-top:1px solid #eff3f5;border-bottom:1px solid #eaf0f3;overflow:hidden}.drawing-stage svg{width:100%;height:100%;display:block}.drawing-caption{position:absolute;bottom:17px;left:20px;font-size:8px;letter-spacing:1.5px;color:#8a9aa5}.drawing-caption span{margin:0 8px}.drawing-axis{position:absolute;bottom:14px;right:20px;font-family:monospace;font-size:10px;line-height:1.3;color:#8b9ca6}.drawing-legend{display:flex;gap:16px;padding:15px 18px;font-size:8px;color:#84939d;align-items:center;min-height:45px}.drawing-legend>span{display:flex;gap:5px;align-items:center}.drawing-legend i{display:inline-block;width:8px;height:8px;border-radius:1px}.legend-concrete{background:#c5d7dd}.legend-soil{background:#ece4d5}.legend-load{background:var(--accent)}.drawing-legend .diagram-scale{margin-left:auto;font-size:8px}.metrics{display:grid;grid-template-columns:repeat(3,1fr);margin-top:15px;border:1px solid var(--line);border-radius:7px;background:#fff;padding:16px 0}.metrics>div{padding:0 17px;border-right:1px solid var(--line)}.metrics>div:last-child{border:0}.metrics span{display:block;color:#6d7f8f;font-size:9px}.metrics strong{display:block;font-size:23px;letter-spacing:-.7px;font-weight:600;margin:5px 0 1px;font-variant-numeric:tabular-nums}.metrics small{font-size:7px;color:#8c9aa5}
.result-summary{margin:16px 16px 0;background:var(--accent-soft);border:1px solid #dceee6;border-radius:5px;padding:11px 12px;color:#27735d;font-size:11px;font-weight:600}.result-summary small{display:block;font-size:8px;font-weight:400;margin-top:3px}.result-summary.warning{background:#fff5eb;border-color:#f1dfca;color:#95612f}.checks{padding:0 16px}.check{padding:17px 0 15px;border-bottom:1px solid #e9eef1}.check-title{display:flex;justify-content:space-between;gap:6px;font-size:10px;color:#617484}.check-status{font-size:7px;color:#277d63;background:#eff7f2;border-radius:3px;padding:2px 5px;font-weight:700}.check-status.fail{color:var(--danger);background:#fff0eb}.check-reading{display:flex;align-items:baseline;gap:6px;margin-top:8px}.check-reading strong{font-size:24px;font-weight:600;letter-spacing:-.6px;line-height:1.25;font-variant-numeric:tabular-nums}.check-reading small{color:#91a0a9;font-size:9px}.check-meta{display:flex;justify-content:space-between;color:#8e9ba4;font-size:8px;margin:6px 0 9px}.check-track{height:3px;background:#eef1f4;border-radius:2px}.check-track span{display:block;height:3px;border-radius:2px;background:#69a38f}.check-track span.fail{background:#cc8869}.reinforcement{padding:19px 16px 13px;background:#fcfdfd}.reinforcement .form-section-label{margin-bottom:9px;font-size:8px}.rebar-value{font-size:19px;color:var(--blue);font-weight:600}.reinforcement p{font-size:9px;color:#7a8e9a;line-height:1.6;margin:5px 0 12px}.reinforcement dl{margin:0}.reinforcement dl>div{display:flex;justify-content:space-between;font-size:9px;margin:7px 0;color:#81919c}.reinforcement dd{margin:0;color:#405e71;font-size:9px}.preliminary-label{display:block;font-size:8px;color:#9a8b68;margin-top:14px}.method-link{border-top:1px solid var(--line);display:flex;justify-content:space-between;padding:14px 16px;color:#67818d;font-size:9px}.scope-note{display:flex;align-items:center;gap:12px;border:1px solid #dee7eb;background:#edf2f5;color:#738493;font-size:10px;line-height:1.7;border-radius:6px;padding:14px 18px;margin:22px 0}.scope-note strong{color:#526a7c;font-weight:600}.info-icon{border:1px solid #8c9faa;border-radius:50%;font-family:Georgia,serif;display:grid;place-items:center;min-width:16px;height:16px;font-size:11px}.methodology{margin-bottom:30px}.method-body{display:grid;grid-template-columns:1fr 1fr;gap:32px;padding:12px 24px 18px;font-size:11px;color:#738392;line-height:1.8}.method-body h3{color:#425d6f;font-size:12px;font-weight:600}.source-links{font-size:9px}.source-links a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}.calculation-detail{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);padding:17px 24px;gap:12px;font-size:10px}.calculation-detail span{display:block;color:#8896a1}.calculation-detail strong{font-weight:500;color:#425b6d;display:block;margin-top:4px}.input-summary{padding:0 24px 20px;font-size:10px;color:#7f8f9a;line-height:1.8}.app-footer{max-width:1540px;margin:auto;display:flex;align-items:center;gap:15px;padding:0 3.1% 24px;color:#95a1a9;font-size:9px}.footer-brand{color:#788f9c;font-size:14px;font-weight:650;letter-spacing:-.5px}.app-footer>span:last-child{margin-left:auto}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#203c4c;color:#fff;padding:12px 22px;border-radius:7px;font-size:12px;box-shadow:0 6px 24px #122a3b30;z-index:10;max-width:90vw}
.tabs{gap:16px}.detail-download{display:flex;align-items:center;gap:12px;margin-top:12px;padding:13px 15px;background:#eaf2f2;border:1px solid #d5e3e3;border-radius:6px}.detail-download strong{display:block;font-size:10px;color:#385d66;font-weight:600}.detail-download span{display:block;font-size:8px;color:#7d949d;margin-top:3px}.detail-download .button{margin-left:auto;font-size:9px;min-height:32px}.drawing-stage.detail-mode{background:#212a31;background-image:none}.detail-mode .drawing-caption,.detail-mode .drawing-axis{display:none}.detail-dialog{width:min(96vw,1500px);max-width:none;max-height:95vh;padding:0;border:1px solid #43545d;border-radius:8px;background:#212a31;color:#e8f1f6;box-shadow:0 20px 80px #10233350}.detail-dialog::backdrop{background:#10233399}.detail-dialog-header{padding:16px 20px;display:flex;gap:12px;align-items:center;border-bottom:1px solid #43515b;background:#28333c}.detail-dialog-header h2{font-size:14px;color:#e1eef2}.detail-dialog-header p{font-size:10px;color:#9bb4c1;margin:5px 0 0}.detail-dialog-header>div{margin-right:auto}.detail-preview{overflow:auto;padding:18px}.detail-preview svg{display:block;width:100%;min-width:850px;min-height:480px;max-height:72vh}.detail-dialog-footer{padding:12px 20px;border-top:1px solid #43515b;font-size:10px;color:#92a6af}.detail-dialog-header .button{font-size:10px}body:has(.detail-dialog[open]){overflow:hidden}@media(max-width:760px){.detail-dialog-header{flex-wrap:wrap;padding:13px}.detail-dialog-header>div{min-width:100%}.detail-dialog-header p{font-size:9px}.detail-preview{padding:8px}.detail-dialog-footer{font-size:9px}.drawing-toolbar{flex-wrap:wrap}.tabs{gap:24px}}@media print{.detail-download,.detail-dialog{display:none!important}}
@media(min-width:1500px){.design-grid{grid-template-columns:320px minmax(450px,1fr) 295px}.drawing-stage{height:475px}.workspace{padding-top:30px}}
@media(max-width:1180px){.design-grid{grid-template-columns:285px minmax(340px,1fr)}.results-panel{grid-column:1/-1;display:grid;grid-template-columns:1fr 2fr 1fr}.results-panel>.panel-heading{grid-column:1/-1}.result-summary{align-self:start}.checks{display:grid;grid-template-columns:1fr 1fr;column-gap:20px}.reinforcement{border-left:1px solid var(--line)}.method-link{grid-column:1/-1}.page-heading{align-items:flex-start}.heading-actions{flex-wrap:wrap;justify-content:flex-end;max-width:285px}.app-header{gap:35px}}
@media(max-width:760px){.app-header{height:65px;padding:0 20px}.brand{font-size:22px}.app-header nav{display:none}.header-link{font-size:10px}.workspace{padding:20px 16px 0}.breadcrumb{font-size:9px;margin-bottom:22px}.page-heading{display:block;margin-bottom:20px}h1{font-size:27px}.page-heading p{font-size:11px}.heading-actions{max-width:none;justify-content:flex-start;padding-top:19px}.button{font-size:10px;padding:8px 10px}.project-bar{gap:8px;flex-wrap:wrap;padding:10px 12px}.project-bar>div{min-width:100%}.project-bar input{flex:1;min-width:0}.save-state{border:0;padding:0;margin-left:auto;font-size:8px}.units{font-size:8px}.design-grid{display:flex;flex-direction:column;gap:16px}.design-grid>*,.drawing-column{width:100%}.drawing-stage{height:385px}.drawing-toolbar{padding:12px}.metrics>div{padding:0 12px}.metrics strong{font-size:23px}.results-panel{display:block}.checks{gap:20px}.reinforcement{border:0}.result-summary{margin-bottom:5px}.method-body{grid-template-columns:1fr;gap:0;padding:8px 18px}.scope-note{align-items:flex-start;font-size:10px}.calculation-detail{grid-template-columns:1fr 1fr;padding:17px 18px}.app-footer{flex-wrap:wrap;gap:8px;padding:0 18px 24px}.app-footer>span:last-child{margin-left:0;min-width:100%}.drawing-legend{gap:13px;padding:14px}.drawing-legend .diagram-scale{font-size:7px}.field>span:first-child{font-size:12px}.field small{font-size:10px}.form-section-label{font-size:9px}.input-unit input{font-size:14px}.wall-type strong{font-size:12px}.wall-type span:not(.selected-dot){font-size:10px}.form-footer{font-size:10px}.method-body{font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
@media print{@page{size:A4;margin:14mm}body{background:white;font-size:10px}.app-header,.breadcrumb,.heading-actions,.project-bar .save-state,.inputs-panel,.drawing-toolbar,.method-link,.app-footer,.toast,.version{display:none!important}.workspace{max-width:none;padding:0}.page-heading{margin-bottom:12px}h1{font-size:24px}.project-bar input{width:350px}.design-grid{display:block}.drawing-column{float:left;width:57%;padding-right:12px}.results-panel{display:block;float:right;width:43%;break-inside:avoid}.drawing-stage{height:320px}.checks{display:block}.check{padding:9px 0}.check-reading strong{font-size:18px}.metrics{padding:10px 0}.metrics>div{padding:0 8px}.metrics strong{font-size:18px}.drawing-legend{gap:8px;padding:9px}.diagram-scale{display:none!important}.scope-note{clear:both;position:relative;top:12px;margin-bottom:27px}.methodology{break-before:page}.method-body{display:block;padding:8px 16px}.calculation-detail{grid-template-columns:1fr 1fr}.panel{box-shadow:none}.reinforcement{padding:12px}.result-summary{margin:10px}.source-links a{color:inherit}*{-webkit-print-color-adjust:exact;print-color-adjust:exact}.input-summary{color:#425b6d}.drawing-caption{font-size:7px}}