/* CarbonSource website
   Palette: graphite (drawing pencil), sheet (drafting paper), spruce (lumber, the brand colour),
   marking yellow (site layout paint, used only for measurement marks), concrete (rules and borders). */
/* fonts are served from this site (SIL Open Font License, see fonts/) */
@font-face{font-family:"Archivo";font-style:normal;font-display:swap;font-weight:100 900;font-stretch:62% 125%;src:url(../fonts/archivo-latin-standard-normal.woff2) format("woff2")}
@font-face{font-family:"Source Sans 3";font-style:normal;font-display:swap;font-weight:200 900;src:url(../fonts/source-sans-3-latin-wght-normal.woff2) format("woff2")}
@font-face{font-family:"Source Sans 3";font-style:italic;font-display:swap;font-weight:200 900;src:url(../fonts/source-sans-3-latin-wght-italic.woff2) format("woff2")}
:root{
  --graphite:#1e2629; --ink:#26302f; --ink-2:#4b5754; --sheet:#f5f7f6; --white:#ffffff;
  --spruce:#2c5f4f; --spruce-dark:#21483c; --tint:#e3ede8; --marking:#e8b90e; --concrete:#c7cdca; --line:#dde3e0;
  --display:"Archivo", "Arial Narrow", system-ui, sans-serif;
  --body:"Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
  --wrap:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){ html{scroll-behavior:auto} *{animation:none!important;transition:none!important} }
body{margin:0;background:var(--sheet);color:var(--ink);font:400 17px/1.6 var(--body);-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;height:auto}
a{color:var(--spruce);text-underline-offset:3px}
a:hover{color:var(--spruce-dark)}
:focus-visible{outline:3px solid var(--marking);outline-offset:2px;border-radius:3px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:var(--white);padding:8px 12px;z-index:100}
.skip:focus{left:8px}

/* type */
h1,h2,h3{font-family:var(--display);font-stretch:112%;color:var(--graphite);margin:0}
h1{font-size:clamp(36px,4.4vw,58px);line-height:1.02;font-weight:780;letter-spacing:-.012em}
h2{font-size:clamp(28px,3.2vw,40px);line-height:1.08;font-weight:740;letter-spacing:-.008em}
h3{font-size:20px;line-height:1.25;font-weight:700;font-stretch:106%}
p{margin:0 0 1em;max-width:68ch}
.lead{font-size:20px;line-height:1.55;color:var(--ink-2);max-width:56ch}
.small{font-size:14px;color:var(--ink-2)}

/* the brand motif: a dimension line under section headings, like a measured length on a drawing */
.dim{display:inline-block;padding-bottom:14px;margin-bottom:18px;background:
  linear-gradient(var(--marking),var(--marking)) left bottom 5px/100% 2px no-repeat,
  linear-gradient(var(--marking),var(--marking)) left bottom/2px 12px no-repeat,
  linear-gradient(var(--marking),var(--marking)) right bottom/2px 12px no-repeat}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 22px;border-radius:6px;font:600 16px/1 var(--body);text-decoration:none;border:2px solid var(--spruce);background:var(--spruce);color:var(--white);cursor:pointer}
.btn:hover{background:var(--spruce-dark);border-color:var(--spruce-dark);color:var(--white)}
.btn.line{background:transparent;color:var(--spruce)}
.btn.line:hover{background:var(--tint);color:var(--spruce-dark)}
.btn.light{background:var(--white);border-color:var(--white);color:var(--graphite)}
.btn.light:hover{background:var(--tint);border-color:var(--tint)}
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* header */
.site-head{background:var(--graphite);color:var(--white)}
.site-head .wrap{display:flex;align-items:center;gap:28px;min-height:68px}
.logo{display:inline-flex;align-items:center;gap:9px;color:var(--white);text-decoration:none;font:760 20px/1 var(--display);font-stretch:108%}
.logo:hover{color:var(--white)}
.logo img{width:30px;height:30px}
.nav{display:flex;gap:4px;margin-left:auto;align-items:center}
.nav a{color:#d6e0dc;text-decoration:none;padding:8px 12px;border-radius:5px;font-weight:600;font-size:15px}
.nav a:hover,.nav a[aria-current="page"]{color:var(--white);background:rgba(255,255,255,.08)}
.nav .btn{margin-left:10px;min-height:40px;padding:9px 16px;font-size:15px}
.navtoggle{display:none;margin-left:auto;background:none;border:1px solid #56706a;color:var(--white);border-radius:6px;min-height:40px;padding:6px 12px;font:600 15px var(--body)}
@media (max-width:860px){
  .navtoggle{display:inline-flex;align-items:center}
  .nav{display:none;position:absolute;left:0;right:0;top:68px;background:var(--graphite);flex-direction:column;align-items:stretch;padding:8px 16px 18px;z-index:20}
  .nav.open{display:flex}
  .nav a{padding:12px}
  .nav .btn{margin:8px 0 0}
  .site-head{position:relative}
}

/* hero */
.hero{background:var(--white);border-bottom:1px solid var(--line)}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:56px;align-items:center;padding-top:72px;padding-bottom:72px}
.hero .lead{margin-top:22px}
@media (max-width:900px){ .hero .wrap{grid-template-columns:1fr;padding-top:48px;padding-bottom:48px} }
.sheetframe{margin:0;background:var(--sheet);border:1px solid var(--concrete);border-radius:4px;padding:14px;position:relative}
.sheetframe figcaption{font-size:13px;color:var(--ink-2);margin-top:8px}
#plan .wall{stroke:var(--graphite);stroke-width:5;fill:none}
#plan .inner{stroke:var(--graphite);stroke-width:2;fill:none}
#plan .opening{stroke:var(--sheet);stroke-width:7}
#plan .dimline{stroke:var(--marking);stroke-width:2;fill:none}
#plan .dimtext{font:600 12px var(--body);fill:#8a6c00}
#plan .room{font:600 11px var(--body);fill:#7d8a86}
#plan .tag rect{fill:var(--graphite)}
#plan .tag text{font:600 11.5px var(--body);fill:var(--white)}
#plan .tag .meas{fill:#9fd3bf}
#plan .total rect{fill:var(--spruce)}
#plan .total text{font:700 15px var(--display);fill:var(--white)}
#plan .total .sub{font:400 11px var(--body);fill:#d4e6de}
/* one orchestrated moment: the drawing gets measured, then the result appears */
.anim #plan .dimline{stroke-dasharray:420;stroke-dashoffset:420;animation:draw 1.1s ease-out forwards}
.anim #plan .dimtext,.anim #plan .tag,.anim #plan .total{opacity:0;animation:show .45s ease-out forwards}
.anim #plan .d2{animation-delay:.5s} .anim #plan .d3{animation-delay:.9s}
.anim #plan .t1{animation-delay:1.2s} .anim #plan .t2{animation-delay:1.55s} .anim #plan .t3{animation-delay:1.9s} .anim #plan .total{animation-delay:2.4s}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes show{to{opacity:1}}

/* sections */
.band{padding:88px 0}
.band.white{background:var(--white)}
.band.dark{background:var(--graphite);color:#dbe4e0}
.band.dark h2,.band.dark h3{color:var(--white)}
.band.dark a:not(.btn){color:#9fd3bf}
.intro{max-width:720px;margin-bottom:40px}
@media (max-width:700px){ .band{padding:60px 0} }

/* comparison table */
.compare{width:100%;min-width:760px;border-collapse:collapse;background:var(--white);border:1px solid var(--line);font-size:16px}
.compare th,.compare td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.compare thead th{font:700 15px var(--display);font-stretch:106%;color:var(--graphite);background:var(--sheet)}
.compare thead th.us{background:var(--spruce);color:var(--white)}
.compare td.us{background:var(--tint);font-weight:600;color:var(--spruce-dark)}
.compare tbody th{font-weight:600;color:var(--graphite);width:28%}
.compare .no{color:#8b9592}
.tablewrap{overflow-x:auto;border-radius:4px}

/* steps: a real sequence, so it is numbered */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;counter-reset:s;border-top:2px solid var(--graphite)}
.steps li{counter-increment:s;padding:22px 22px 0 0;position:relative}
.steps li::before{content:counter(s);display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:var(--graphite);color:var(--white);font:700 15px var(--display);margin:-40px 0 14px}
.steps h3{margin-bottom:8px}
.steps p{font-size:16px;color:var(--ink-2)}
@media (max-width:900px){ .steps{grid-template-columns:1fr 1fr;row-gap:28px} }
@media (max-width:560px){ .steps{grid-template-columns:1fr;border-top:0;border-left:2px solid var(--graphite);padding-left:22px} .steps li{padding:0 0 18px} .steps li::before{margin:0 0 10px -40px} }

/* evidence */
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px}
.fact .figure{font:780 46px/1 var(--display);font-stretch:112%;color:var(--white);display:block;margin-bottom:12px}
.fact p{font-size:16px}
@media (max-width:800px){ .facts{grid-template-columns:1fr;gap:28px} }

/* product screenshots */
.shots{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:28px;align-items:start}
.shot{margin:0;background:var(--white);border:1px solid var(--line);border-radius:6px;padding:10px}
.shot img{display:block;border-radius:3px}
.shot figcaption{font-size:14px;color:var(--ink-2);padding:10px 4px 2px}
@media (max-width:900px){ .shots{grid-template-columns:1fr} }

/* rules by region */
.rules{width:100%;border-collapse:collapse}
.rules th,.rules td{text-align:left;padding:14px 12px;border-bottom:1px solid var(--line);vertical-align:top;font-size:16px}
.rules th{font-weight:700;color:var(--graphite);width:26%}
.rules td.lim{white-space:nowrap;font-weight:600}
.rules .yes{color:var(--spruce)}

/* two ways to run it */
.ways{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.way{background:var(--white);border:1px solid var(--line);border-top:4px solid var(--spruce);padding:28px;border-radius:4px}
.way.ent{border-top-color:var(--graphite)}
.way ul{padding-left:20px;margin:12px 0 0}
.way li{margin:6px 0}
.flow{margin:18px 0 6px}
.flow text{font:600 12px var(--body);fill:var(--graphite)}
@media (max-width:860px){ .ways{grid-template-columns:1fr} }

/* pricing */
.plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:stretch}
.plan{background:var(--white);border:1px solid var(--line);border-radius:6px;padding:30px;display:flex;flex-direction:column}
.plan.pro{border:2px solid var(--spruce);box-shadow:0 10px 30px rgba(44,95,79,.12)}
.plan h3{font-size:22px}
.plan .price{font:780 44px/1 var(--display);font-stretch:112%;color:var(--graphite);margin:18px 0 4px}
.plan .price span{font:400 16px var(--body);color:var(--ink-2)}
.plan .note{font-size:14px;color:var(--spruce);font-weight:600;margin-bottom:14px}
.plan ul{list-style:none;padding:0;margin:16px 0 24px;flex:1}
.plan li{padding:8px 0 8px 26px;border-top:1px solid var(--line);position:relative;font-size:16px}
.plan li::before{content:"";position:absolute;left:2px;top:15px;width:12px;height:6px;border-left:2.5px solid var(--spruce);border-bottom:2.5px solid var(--spruce);transform:rotate(-45deg)}
.plan .btn{width:100%}
.plans.four{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.plans.four .plan{padding:24px}
.plans.four .plan .price{font-size:36px}
@media (max-width:1180px){ .plans.four{grid-template-columns:repeat(2,minmax(0,1fr))} }
@media (max-width:900px){ .plans,.plans.four{grid-template-columns:1fr} }
.faq{max-width:780px}
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{cursor:pointer;font-weight:700;color:var(--graphite);font-size:18px}
.faq details p{margin:10px 0 0}

/* page heads */
.pagehead{background:var(--white);border-bottom:1px solid var(--line);padding:64px 0 48px}
.pagehead .lead{margin-top:18px}

/* contact */
.formgrid{display:grid;grid-template-columns:1fr 1fr;gap:16px 20px;max-width:760px}
.formgrid .full{grid-column:1 / -1}
.formgrid label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:15px;color:var(--graphite)}
.formgrid input,.formgrid select,.formgrid textarea{font:400 16px var(--body);color:var(--ink);background:var(--white);border:1px solid var(--concrete);border-radius:5px;padding:11px 12px}
.formgrid textarea{min-height:140px;resize:vertical}
.formgrid .hp{position:absolute;left:-9999px}
.notice{padding:14px 16px;border-radius:5px;margin-bottom:22px;max-width:760px}
.notice.ok{background:var(--tint);color:var(--spruce-dark)}
.notice.err{background:#fbeaea;color:#8c1d1d}
@media (max-width:640px){ .formgrid{grid-template-columns:1fr} }

/* closing call to action */
.cta .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.cta p{margin:10px 0 0}

/* footer */
.site-foot{background:var(--graphite);color:#b9c7c2;padding:44px 0;font-size:15px;border-top:1px solid #33403f}
.site-foot .wrap{display:flex;flex-wrap:wrap;gap:24px 48px;justify-content:space-between}
.site-foot a{color:#d6e0dc;text-decoration:none}
.site-foot a:hover{color:var(--white);text-decoration:underline}
.site-foot nav{display:flex;flex-wrap:wrap;gap:8px 22px}
.site-foot .logo{font-size:18px}

.tablewrap{-webkit-overflow-scrolling:touch}
@media (max-width:760px){ .tablewrap::after{content:'Scroll sideways to compare';display:block;font-size:13px;color:var(--ink-2);padding-top:8px} }