:root{--ink:#243a2f;--green:#294d3a;--muted:#75877a;--line:#dce4dc;--paper:#f8f9f4;--orange:#ce7658}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f8f9f4;color:var(--ink);font-family:"DM Sans",sans-serif;font-size:14px}button,input,select{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}[hidden]{display:none!important}.topbar{height:86px;padding:0 6%;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #e3e9e1;background:#fbfcf8}.brand{display:flex;align-items:center;gap:12px;font-size:11px;letter-spacing:1.6px;font-weight:700;line-height:1.2}.brand i{font-style:normal;color:var(--orange)}.brand small{display:block;color:#9aa99e;font-size:8px;letter-spacing:1.8px;margin-top:4px}.brand-icon{width:37px;height:37px;display:grid;place-items:center;background:var(--green);color:white;font-family:"DM Serif Display",serif;font-size:21px;letter-spacing:-2px}.brand-icon span{font-family:sans-serif;color:#dfa184;font-size:11px}.topbar nav{display:flex;gap:42px;font-size:12px;font-weight:600}.topbar nav a:hover{color:var(--orange)}.header-note{font-size:9px;letter-spacing:1.4px;font-weight:700;color:#73867a}.live-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#79a47e;margin-right:8px}.hero{position:relative;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:8%;padding:100px 9% 105px;background:#eef3eb;min-height:510px}.eyebrow{font-size:10px;font-weight:700;letter-spacing:2px;color:#668473}.eyebrow>span{display:inline-block;width:23px;height:1px;background:var(--orange);vertical-align:middle;margin-right:9px}.hero h1,.section-heading h2,.how h2,.about h2{font-family:"DM Serif Display",Georgia,serif;font-weight:400;letter-spacing:-1.6px}.hero h1{font-size:clamp(44px,5vw,71px);line-height:1.06;margin:23px 0}.hero h1 em{color:#779786;font-weight:400}.hero-copy>p{max-width:460px;color:#718177;line-height:1.8;font-size:14px}.primary-link{display:inline-flex;gap:45px;align-items:center;background:var(--green);color:white;padding:17px 19px;margin-top:20px;font-size:12px;font-weight:600}.primary-link span{font-size:17px}.hero-graphic{background:#f9fbf7;border:1px solid #d6e1d6;box-shadow:0 15px 40px #4e675b0a;padding:20px}.graphic-top,.graphic-bottom{display:flex;justify-content:space-between;font-size:8px;font-weight:700;letter-spacing:1.5px;color:#8da094}.graphic-top span:first-child{color:#4d6e59}.hero-graphic svg{display:block;width:100%;margin:12px 0}.graphic-bottom{border-top:1px solid #e1e9e1;padding-top:15px}.graphic-bottom span:last-child{color:var(--orange);font-size:16px}.hero-index{position:absolute;bottom:25px;left:9%;font-size:9px;letter-spacing:1.5px;color:#9ba99e}.workspace-section{max-width:1380px;padding:90px 6%;margin:auto}.section-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:36px}.section-heading h2,.how h2,.about h2{font-size:42px;margin:15px 0 8px;line-height:1.12}.section-heading p,.calc-intro p{color:#849187;margin:0;line-height:1.6}.section-number{font-size:10px;letter-spacing:2px;color:#a6b3a8}.tabs{display:flex;border-bottom:1px solid #d9e3da}.tab{border:0;background:none;padding:17px 25px;color:#87968a;font-weight:600;font-size:13px;border-bottom:2px solid transparent;text-align:left}.tab span{font-size:10px;letter-spacing:1px;color:#a6b5aa;margin-right:15px}.tab b{margin-left:40px;font-size:14px;font-weight:400}.tab.active{color:var(--green);border-bottom-color:var(--green)}.tab.active span{color:var(--orange)}.calculator{background:white;border:1px solid #e1e8e1;border-top:0}.calc-intro{display:flex;justify-content:space-between;align-items:start;padding:32px 35px;border-bottom:1px solid #e8eee8}.muted{color:#a1afa4;font-size:9px}.calc-intro h3{font-family:"DM Serif Display",Georgia,serif;font-weight:400;font-size:27px;margin:10px 0 5px}.unit-chip{font-size:9px;letter-spacing:1.3px;font-weight:700;color:#72917b;background:#eff5ef;padding:10px}.unit-chip span{color:#90b398}.calc-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.inputs,.output{padding:30px 35px}.inputs{border-right:1px solid #e8eee8}.block-title{display:flex;align-items:center;gap:10px;margin:0 0 15px}.block-title:not(:first-child){margin-top:30px}.block-title>span{font-size:9px;color:#bbcabd;letter-spacing:1px}.block-title h4{margin:0;font-size:13px}.add{margin-left:auto;border:0;background:none;color:#678e73;font-size:11px;font-weight:700;padding:5px}.field-grid{display:grid;gap:10px}.field-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}label{min-width:0;display:block;font-size:10px;font-weight:600;color:#849389}label>span{float:right;color:#adb9af}input,select{display:block;width:100%;min-width:0;height:39px;border:1px solid #dce5dc;border-radius:2px;background:#fbfcfa;color:#344b3b;margin-top:7px;padding:8px;font-size:12px}input:focus,select:focus{outline:2px solid #a4c4ae;outline-offset:1px}.hint{font-size:11px;line-height:1.5;color:#98a69b;margin:-4px 0 13px}.rows{display:grid;gap:8px}.input-row{display:flex;align-items:end;gap:8px;padding:10px;background:#f7f9f5;border:1px solid #edf1ec}.input-row label{flex:1}.input-row label:has(select){flex:1.35}.remove{width:29px;height:39px;flex-shrink:0;border:0;background:transparent;color:#a1b0a4;font-size:20px}.remove:hover{color:#c45c45}.row-index{align-self:center;font-weight:700;color:#779182;font-size:11px}.solve{width:100%;display:flex;justify-content:space-between;align-items:center;margin-top:28px;padding:16px 18px;background:var(--green);border:0;color:white;font-size:12px;font-weight:700}.solve:hover,.primary-link:hover{background:#3a654b}.output{background:#fbfcf9;min-width:0}.output-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.output-heading h4{font-family:"DM Serif Display",Georgia,serif;font-size:24px;font-weight:400;margin:8px 0 0}.result-badge{color:#72977d;font-weight:700;font-size:9px;letter-spacing:1px}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:22px}.metrics>div{background:white;border:1px solid #e7ede6;padding:13px 10px}.metrics span,.metrics small{display:block;font-size:9px;letter-spacing:.6px;color:#98a79b}.metrics strong{display:block;font-size:20px;margin:8px 0 2px;color:#375643}.chart{border-top:1px solid #e6ece5;padding:14px 0 0}.chart-title{display:flex;justify-content:space-between;font-size:11px}.chart-title span{font-size:10px;color:#9ba99e}.chart svg{display:block;width:100%;height:auto}.chart svg text,.truss-graphic text{fill:#899a8d;font-family:"DM Sans",sans-serif;font-size:9px}.output h5{font-size:12px;margin:20px 0 10px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;font-size:11px;text-align:left}th{color:#95a499;font-size:10px;font-weight:600}th,td{padding:9px 5px;border-bottom:1px solid #e8eee7;white-space:nowrap}td{color:#4b6252}.result-note{font-size:10px;line-height:1.6;color:#9aa99d;margin-top:15px}.truss-graphic{width:100%;background:#f2f6f0;border:1px solid #e6ece5}.legend{display:flex;gap:20px;font-size:9px;letter-spacing:1px;color:#426c59}.legend span:last-child{color:#cf7658}.error{padding:20px;background:#fff3ec;color:#9e4d35;border:1px solid #efd6c9;line-height:1.6}.empty-output{padding:45px 10px;text-align:center;color:#8b9b8e}.empty-output span{font-size:26px}.empty-output h4{color:#526a59}.disclaimer{border-left:3px solid #d5a78c;background:#f5f3ed;color:#8b8b7c;font-size:11px;line-height:1.7;padding:15px 18px;margin-top:18px}.disclaimer strong{color:#6b7568}.ad-area{text-align:center;margin:25px auto;min-height:100px}.ad-label{color:#a0aea2;font-size:9px;letter-spacing:1.5px;margin-bottom:10px}.how{padding:80px 9%;background:#eaf1e9;display:grid;grid-template-columns:1fr 2fr;gap:10%}.how h2{font-size:39px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:35px}.steps>div{border-top:1px solid #c9d8ca;padding-top:18px}.steps span{font-size:9px;letter-spacing:1.5px;color:#83a28c;font-weight:700}.steps h3{font-family:"DM Serif Display",Georgia,serif;font-weight:400;font-size:20px}.steps p,.about p{color:#7a8e7f;line-height:1.8;font-size:12px}.about{text-align:center;padding:95px 20px;max-width:720px;margin:auto}.about p{max-width:580px;margin:18px auto}.about h2{font-size:42px}footer{border-top:1px solid #e3ebe2;padding:27px 6%;display:flex;align-items:center;gap:25px}footer p{font-size:11px;color:#9baa9e}footer>span{margin-left:auto;font-size:9px;letter-spacing:1px;color:#a4b2a7}.privacy-button{border:0;background:none;color:#71887a;font-size:11px;text-decoration:underline}
@media(max-width:850px){.topbar nav{gap:16px}.header-note{display:none}.hero{padding:65px 6%;gap:5%}.calc-layout{grid-template-columns:1fr}.inputs{border-right:0;border-bottom:1px solid #e8eee8}.how{grid-template-columns:1fr;gap:25px}.hero h1{font-size:48px}}
@media(max-width:600px){.topbar{height:70px;padding:0 5%}.topbar nav a:not(:first-child){display:none}.hero{grid-template-columns:1fr;padding:55px 6% 65px}.hero h1{font-size:46px}.hero-graphic{margin-top:20px}.hero-index{font-size:8px}.workspace-section{padding:65px 4%}.section-heading h2,.how h2,.about h2{font-size:34px}.section-number{display:none}.tab{flex:1;padding:15px 8px;font-size:11px}.tab span{margin-right:5px}.tab b{margin-left:5px}.calc-intro,.inputs,.output{padding:25px 16px}.calc-intro h3{font-size:24px}.field-grid.three{grid-template-columns:1fr}.input-row{flex-wrap:wrap}.input-row label{min-width:70px}.input-row label:has(select){min-width:115px}.metrics strong{font-size:17px}.steps{grid-template-columns:1fr;gap:15px}.how{padding:60px 6%}.about{padding:65px 20px}footer{flex-wrap:wrap}footer>span{margin-left:0}}
.privacy-page{max-width:820px;margin:0 auto;padding:72px 24px 96px}.privacy-page h1{font-family:"DM Serif Display",Georgia,serif;font-size:clamp(38px,5vw,56px);font-weight:400;margin:16px 0}.privacy-page h2{font-size:18px;margin:34px 0 10px}.privacy-page p,.privacy-page li{color:#718177;line-height:1.8}.privacy-page a{color:var(--green);text-decoration:underline}.privacy-date{font-size:11px;color:#98a69b}.privacy-notice{border-left:3px solid #d5a78c;background:#f5f3ed;color:#6b7568;padding:14px 18px;line-height:1.7}
.home-hero{padding:110px 9%;background:#eef3eb}
.home-hero h1,.section-heading h1{font-family:"DM Serif Display",Georgia,serif;font-weight:400;letter-spacing:-1.6px}
.home-hero h1{font-size:clamp(44px,5vw,71px);line-height:1.06;margin:23px 0}
.home-hero h1 em{color:#779786;font-weight:400}
.home-hero p{max-width:460px;color:#718177;line-height:1.8}
.section-heading h1{font-size:clamp(34px,4vw,48px);line-height:1.12;margin:15px 0 8px}
.section-heading p a{text-decoration:underline}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:16px}
.tool-card{display:block;background:white;border:1px solid #e1e8e1;padding:30px;transition:border-color .2s,box-shadow .2s}
.tool-card:hover,.tool-card:focus-visible{border-color:#72917b;box-shadow:0 10px 24px #4e675b16}
.tool-card h3{display:flex;justify-content:space-between;gap:15px;font-family:"DM Serif Display",Georgia,serif;font-size:25px;font-weight:400;margin:18px 0 10px}
.tool-card h3 span{color:var(--orange)}
.tool-card p{color:#718177;line-height:1.7;margin:0}
.workspace-section>.calculator{border-top:1px solid #e1e8e1}
@media(max-width:600px){.home-hero{padding:65px 6%}.tool-card{padding:24px}}