:root{color-scheme:dark;--bg:#101412;--surface:#191f1b;--raised:#222a24;--border:#354039;--text:#f0f2eb;--muted:#a9b6ac;--accent:#ff812e;--sage:#b8cda6;--blue:#9fd4e5;--mono:Consolas,'Courier New',monospace}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 'Segoe UI',Arial,sans-serif}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:var(--accent)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:4px}button{color:inherit}header{height:82px;border-bottom:1px solid var(--border);padding:0 4%;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{font-weight:800;letter-spacing:1.4px;font-size:14px}.brand span{color:var(--accent)}.brand small{display:block;font-size:10px;font-weight:400;letter-spacing:2px;color:var(--muted);margin-top:3px}.header-note{font:11px var(--mono);color:var(--muted)}.shell{max-width:1500px;margin:auto;padding:32px 4% 60px;display:grid;grid-template-columns:218px minmax(0,1fr);gap:36px}.rail{align-self:start;position:sticky;top:24px}.eyebrow{font:10px var(--mono);letter-spacing:1.8px;text-transform:uppercase;color:var(--muted)}.rail h1{font-size:27px;letter-spacing:-1px;margin:10px 0 6px;line-height:1.15}.rail>p{color:var(--muted);font-size:13px;margin:10px 0 25px}.tool-nav{display:grid;gap:8px}.tool-button{display:grid;grid-template-columns:32px 1fr;gap:10px;text-align:left;padding:15px 10px;background:transparent;border:1px solid transparent;border-radius:8px}.tool-button:hover{background:var(--surface)}.tool-button[aria-pressed=true]{background:#ff812e10;border-color:#ff812e77}.tool-button[aria-pressed=true] .nav-icon{color:var(--accent)}.tool-button strong{display:block;font-size:14px}.tool-button small{display:block;color:var(--muted);font-size:11px;margin-top:4px}.nav-icon{font-size:23px;line-height:1.3;color:var(--muted)}.rail-note{border-top:1px solid var(--border);margin-top:25px;padding-top:20px;font-size:12px;color:var(--muted)}.rail-note strong{color:var(--text)}.rail-note a{display:block;margin-top:10px;text-decoration:none}.workspace{min-width:0}.page-heading{display:flex;justify-content:space-between;gap:20px;align-items:start;margin-bottom:23px}.page-heading h2{font-size:32px;line-height:1.15;letter-spacing:-.9px;margin:8px 0 10px}.page-heading p{color:var(--muted);max-width:660px;font-size:14px;margin:0}.live-label{white-space:nowrap;font:10px var(--mono);color:var(--sage);padding-top:10px}.live-label:before{content:'';display:inline-block;width:6px;height:6px;background:var(--sage);border-radius:50%;margin-right:7px}.calculator{display:grid;grid-template-columns:minmax(290px,.95fr) minmax(320px,1.15fr);gap:20px;align-items:start}.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:24px;min-width:0}.card-title{font-size:14px;font-weight:700;margin:0 0 6px}.step{font:10px var(--mono);color:var(--accent);margin-right:8px}.hint{color:var(--muted);font-size:12px;line-height:1.6;margin:5px 0 16px}.fields{display:grid;grid-template-columns:1fr 1fr;gap:18px 14px;margin:18px 0}.field{display:block;min-width:0;font-size:12px;color:#d6ded5}.field.wide{grid-column:1/-1}.field-head{display:flex;justify-content:space-between;gap:6px;align-items:end;min-height:20px}.unit{font:11px var(--mono);color:var(--muted);white-space:nowrap}.field input,.field select{width:100%;margin-top:7px;border:1px solid #536052;border-radius:6px;background:#101612;color:var(--text);min-height:48px;padding:10px 12px;font:17px var(--mono)}.field select{font:13px 'Segoe UI',sans-serif}.field input:read-only{color:var(--sage);border-style:dashed;background:#263024}.field .help{font-size:11px;color:var(--muted);display:block;line-height:1.5;margin-top:6px}.segmented{display:flex;padding:4px;background:var(--bg);border:1px solid var(--border);border-radius:8px;margin:18px 0;gap:4px}.segmented button{flex:1;background:none;border:0;border-radius:5px;padding:10px 7px;font-size:12px}.segmented button[aria-pressed=true]{background:var(--raised);box-shadow:0 1px 3px #0005;color:var(--accent)}details{border-top:1px solid var(--border);padding:15px 0 0;margin-top:18px}summary{cursor:pointer;font-size:12px;font-weight:600;color:#dbe3d8}details p{font-size:12px;line-height:1.7;color:var(--muted)}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px}.button{border:1px solid #4a574b;background:transparent;border-radius:6px;padding:9px 12px;font-size:11px;min-height:38px}.button:hover{background:var(--raised);border-color:var(--muted)}.button.primary{background:var(--accent);border-color:var(--accent);color:#151912;font-weight:700}.error{font-size:12px;color:#ffb69c;margin:12px 0 0}.error:empty{display:none}.result-card{background:linear-gradient(145deg,#232d24,#19201b)}.result-kicker{font:10px var(--mono);letter-spacing:1.4px;color:var(--sage);text-transform:uppercase}.big-number{font-size:clamp(38px,4.3vw,58px);line-height:1.12;font-weight:650;letter-spacing:-2px;margin:14px 0 8px;font-variant-numeric:tabular-nums;color:var(--accent);overflow-wrap:anywhere}.big-number span{font-size:18px;letter-spacing:0;color:var(--text);font-weight:400}.result-description{font-size:13px;color:#d3ddcf;margin:0 0 20px}.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;border-top:1px solid #43503f;padding-top:18px;margin-top:20px}.metric small{display:block;font-size:10px;color:var(--muted)}.metric strong{display:block;font:15px var(--mono);margin-top:6px;overflow-wrap:anywhere}.diagram{background:#111b15;border:1px solid #3b483b;border-radius:8px;margin-top:20px;overflow:hidden;background-image:linear-gradient(#fff03 1px,transparent 1px),linear-gradient(90deg,#fff03 1px,transparent 1px);background-size:20px 20px}.diagram svg{width:100%;display:block}.diagram svg text{font:12px var(--mono);fill:#d3dfcc}.diagram .legend{display:flex;flex-wrap:wrap;gap:14px;padding:10px 14px;font-size:10px;color:var(--muted);border-top:1px solid #303d32}.legend i{display:inline-block;width:15px;height:2px;background:var(--accent);margin-right:5px;vertical-align:middle}.legend i.green{background:var(--sage)}.legend i.blue{background:var(--blue)}.callout{padding:14px 16px;background:#b8cda60c;border-left:2px solid var(--sage);border-radius:0 6px 6px 0;margin-top:18px;font-size:12px;line-height:1.6;color:#d3ddcf}.callout.orange{border-color:var(--accent)}.result-pair{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin-top:18px}.result-pair .big-number{font-size:36px;letter-spacing:-1px}.result-pair .big-number span{font-size:15px}.result-pair>div+div{border-left:1px solid var(--border);padding-left:16px}.result-pair>div+div .big-number{color:var(--sage)}.context{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:20px}.context details{margin:0;border:1px solid var(--border);border-radius:8px;padding:16px 18px}.context p{margin-bottom:0}.service{display:flex;justify-content:space-between;align-items:center;gap:20px;border-top:1px solid var(--border);margin-top:25px;padding-top:22px}.service strong{font-size:14px}.service p{font-size:12px;color:var(--muted);margin:5px 0 0}.service a{white-space:nowrap;text-decoration:none;font-size:12px}.measurement-guide{background:#101812;border:1px solid var(--border);border-radius:8px;margin:16px 0}.measurement-guide svg{width:100%;height:160px;display:block}.measurement-guide text{fill:#cddac8;font:12px var(--mono)}.section-divider{border-top:1px solid var(--border);padding-top:20px;margin-top:22px}.progress{display:flex;gap:5px;align-items:center;font:11px var(--mono);color:var(--muted);margin-top:16px}.progress i{height:4px;flex:1;background:#354238;border-radius:3px}.progress i.done{background:var(--accent)}.out-square{border:1px solid #a85a28;background:#ff812e09;padding:18px;border-radius:8px;margin-top:20px}.out-square .big-number{font-size:47px}.ant-card{margin-top:16px;border-radius:8px;background:#121b13;padding:16px}.ant-card strong{display:block;font-size:19px;margin:7px 0}.ant-card p{font-size:12px;color:var(--muted);margin:6px 0}.ant-card svg{width:100%;display:block;height:70px}.mini-table{width:100%;border-collapse:collapse;font-size:12px;margin-top:12px}.mini-table th{text-align:left;font-weight:400;color:var(--muted)}.mini-table th,.mini-table td{padding:9px 0;border-bottom:1px solid var(--border)}.mini-table td:last-child,.mini-table th:last-child{text-align:right;font-family:var(--mono)}.empty{padding:30px 18px;border:1px dashed #52624f;border-radius:8px;text-align:center;margin-top:20px;color:var(--muted);font-size:13px}.empty strong{display:block;color:var(--text);margin-bottom:8px}.status-line{font-size:11px;color:var(--muted);margin-top:12px;min-height:16px}.hidden,[hidden]{display:none!important}footer{border-top:1px solid var(--border);padding:20px 4%;font:10px var(--mono);letter-spacing:1px;color:var(--muted)}@media(min-width:1250px){.card{padding:28px}.calculator{gap:24px}}@media(max-width:1100px){.shell{grid-template-columns:1fr;gap:20px}.rail{position:static}.rail h1,.rail>p,.rail-note,.rail>.eyebrow{display:none}.tool-nav{grid-template-columns:repeat(4,1fr)}.tool-button{padding:12px 9px;gap:5px}.tool-button 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print{header,.rail,.actions,.service,footer,.segmented,.status-line{display:none!important}.shell{display:block;padding:0}.calculator{display:block}.card{margin-bottom:15px;break-inside:avoid}.context{display:block}.context details{margin:12px 0}body{background:white;color:black;print-color-adjust:exact}.card{background:#f1f4ef;color:black}.hint,.field,.result-description,.metric small,.result-kicker{color:#33402f}.field input,.field select{color:black;background:white}.big-number{color:#b94d00}.big-number span{color:black}.out-square{break-inside:avoid}.diagram{break-inside:avoid}}
.mobile-dock{display:none}#square-result{scroll-margin-top:20px}@media(max-width:720px){body{padding-bottom:85px}.mobile-dock{position:fixed;bottom:0;left:0;right:0;z-index:10;display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 18px calc(12px + env(safe-area-inset-bottom));background:#172019f5;border-top:1px solid #536049;box-shadow:0 -8px 30px #0003}.mobile-dock small{display:block;font:9px var(--mono);letter-spacing:1px;color:var(--muted)}.mobile-dock strong{display:block;font-size:17px;color:var(--accent)}.mobile-dock .button{flex-shrink:0}.big-number{scroll-margin-top:20px}}@media print{.mobile-dock{display:none!important}}