@charset "UTF-8";
/* Specline — the public site. One stylesheet for every public page: the home page, the
   project-type pages and the guides. Tokens first, then components. The A4 preview inside
   the app has its own stylesheet and is not this. */
:root{
  --paper:#F7F8F6; --paper-warm:#FBFAF8; --well:#EEF0EC; --surface:#FFFFFF;
  --ink:#16281F; --ink-2:#4C5C52; --ink-3:#6E7C74; --rule:#C7CDC5; --rule-soft:#DEE2DB;
  --petrol:#0E6E85; --petrol-hi:#0B586B; --petrol-soft:#E0EEF2; --on-petrol:#FBFAF8; --bracket:#0E6E85;
  --pass:#2E7D4F; --pass-soft:#E3F0E8; --hold:#8A6108; --hold-soft:#F6EEDB;
  --wordmark:"Archivo","IBM Plex Sans",Inter,system-ui,sans-serif;
  --sans:"IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --r-input:2px; --r-ctl:4px; --r-card:6px; --r-modal:10px;
  --shadow-2:0 4px 14px rgba(22,40,31,.10),0 24px 60px rgba(22,40,31,.12);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#10191F; --paper-warm:#17222A; --well:#0B1319; --surface:#17222A;
  --ink:#EDEAE4; --ink-2:#A8B4BC; --ink-3:#78868F; --rule:#263239; --rule-soft:#1F2A31;
  --petrol:#2E9EB8; --petrol-hi:#63BDD1; --petrol-soft:#0F323C; --on-petrol:#08141A; --bracket:#2E9EB8;
  --pass:#5CB981; --pass-soft:#142A1E; --hold:#D7A54A; --hold-soft:#2B2113;
  --shadow-2:0 4px 16px rgba(0,0,0,.5),0 24px 70px rgba(0,0,0,.55);}}
:root[data-theme="dark"]{
  --paper:#10191F; --paper-warm:#17222A; --well:#0B1319; --surface:#17222A;
  --ink:#EDEAE4; --ink-2:#A8B4BC; --ink-3:#78868F; --rule:#263239; --rule-soft:#1F2A31;
  --petrol:#2E9EB8; --petrol-hi:#63BDD1; --petrol-soft:#0F323C; --on-petrol:#08141A; --bracket:#2E9EB8;
  --pass:#5CB981; --pass-soft:#142A1E; --hold:#D7A54A; --hold-soft:#2B2113;
  --shadow-2:0 4px 16px rgba(0,0,0,.5),0 24px 70px rgba(0,0,0,.55);}

*{box-sizing:border-box}
html{color-scheme:light dark;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--petrol);text-decoration:none}
a:hover{color:var(--petrol-hi);text-decoration:underline}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--petrol);outline-offset:2px}
::selection{background:var(--petrol-soft)}
h1,h2,h3{font-family:var(--wordmark);font-weight:700;letter-spacing:-.025em;line-height:1.08;margin:0;text-wrap:balance}
h2{font-size:clamp(26px,3.2vw,36px);margin-bottom:12px}
h3{font-size:19px;letter-spacing:-.015em;line-height:1.3}
p{margin:0 0 14px}
.lede{color:var(--ink-2);font-size:17.5px;max-width:60ch}
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-3);margin:0 0 14px;display:flex;gap:12px;align-items:center}
.eyebrow::after{content:"";flex:0 0 36px;height:1px;background:var(--rule)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.wrap{max-width:1140px;margin:0 auto;padding:0 28px}
@media(max-width:640px){.wrap{padding:0 18px}}
section{padding:88px 0;border-top:1px solid var(--rule-soft)}
section.tight{padding:64px 0}
@media(max-width:760px){section{padding:60px 0}}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--rule);background:var(--surface);color:var(--ink);border-radius:var(--r-ctl);padding:11px 18px;font-size:15px;font-weight:500;line-height:1.2;white-space:nowrap;text-decoration:none}
.btn:hover{border-color:var(--ink-2);text-decoration:none;color:var(--ink)}
.btn-primary{background:var(--petrol);border-color:var(--petrol);color:var(--on-petrol)}
.btn-primary:hover{background:var(--petrol-hi);border-color:var(--petrol-hi);color:var(--on-petrol)}
.btn-quiet{background:transparent;border-color:transparent;color:var(--ink-2)}
.btn-quiet:hover{background:var(--well);border-color:transparent}

/* header */
.top{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--rule-soft)}
.top .wrap{display:flex;align-items:center;gap:22px;height:64px}
.lockup{display:inline-flex;align-items:stretch;gap:7px;height:28px;text-decoration:none}
.lockup svg{width:6.7px;height:28px;display:block;overflow:visible}
.lockup b{align-self:center;font-family:var(--wordmark);font-weight:700;font-size:19.6px;letter-spacing:-.035em;line-height:.95;color:var(--ink)}
.lockup:hover{text-decoration:none}
.nav{display:flex;gap:4px;margin-left:8px}
.nav a{color:var(--ink-2);padding:8px 11px;border-radius:var(--r-ctl);font-size:14.5px}
.nav a:hover{background:var(--well);color:var(--ink);text-decoration:none}
.top .spacer{flex:1}
@media(max-width:820px){.nav{display:none}.top .wrap{height:58px}}
@media(max-width:640px){.top .btn-primary{display:none}.top .wrap{gap:12px}.eyebrow::after{display:none}}

/* hero */
/* The home page, rebuilt to the September 2026 design: condensed headings, the film in the hero,
   the layer bar as a strip beneath it, cards, the four steps, the dark boundary. Everything here
   is scoped to body.home so the type pages and guides keep their own measure. */
:root{--cond:"IBM Plex Sans Condensed","IBM Plex Sans",-apple-system,sans-serif}
body.home h1,body.home h2{font-family:var(--cond);font-weight:700;letter-spacing:-.01em;line-height:1.02}
body.home h2{font-size:clamp(28px,3.4vw,40px)}
body.home .hero h1{font-size:clamp(36px,4.3vw,56px);text-wrap:pretty}   /* balance strands "written to" on its own line */
.film{margin:0;display:flex;flex-direction:column;gap:10px;min-width:0}
.promo-video{display:block;width:100%;height:auto;aspect-ratio:16/9;background:var(--ink);border:1px solid var(--rule);border-radius:var(--r-card);box-shadow:var(--shadow-2)}
.film figcaption{font-family:var(--mono);font-size:12px;color:var(--ink-3);line-height:1.5}
.strip{padding:0 0 64px;border-top:0}
.strip .lbar{height:44px}
.skey{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:12px;font-family:var(--mono);font-size:13px;color:var(--ink-2)}
.skey .eyebrow{margin:0}.skey .eyebrow::after{display:none}
.skey .u b{color:var(--ink);font-weight:500}
.skey .snote{margin-left:auto;color:var(--ink-3);font-size:12px}
@media(max-width:820px){.skey .snote{margin-left:0;flex-basis:100%}}
body.home .cols{gap:16px;border:0;background:transparent;overflow:visible}
body.home .col{border:1px solid var(--rule);border-radius:var(--r-card);background:var(--surface)}
body.home .col:first-child{border-left:1px solid var(--rule)}
@media(max-width:820px){body.home .col{border-top:1px solid var(--rule)}body.home .col:first-child{border-top:1px solid var(--rule)}}
.list.steps li{grid-template-columns:72px minmax(0,1fr);border-top:1px solid var(--rule-soft)}
.list.steps li:first-child{border-top:1px solid var(--ink)}
.list.steps li:last-child{border-bottom:1px solid var(--ink)}
.list.steps li i{font-size:13px;letter-spacing:.02em}
body.home .boundary{background:#10191F;border-top:0;color:#F4F3F0}   /* dark in both themes: a band, not a surface */
body.home .boundary blockquote{font-family:var(--cond);text-transform:uppercase;letter-spacing:.08em;font-weight:600;font-size:clamp(18px,2vw,24px);line-height:1.35}
body.home .boundary blockquote em{color:#3FA6BE;padding:0 4px}
body.home .boundary p{color:#AFB6B9;font-size:14.5px}
.hero{padding:76px 0 40px;border-top:0}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);gap:56px;align-items:center}
@media(max-width:900px){.hero .wrap{grid-template-columns:1fr;gap:40px}}
.hero h1{font-size:clamp(36px,5.2vw,62px)}
.hero h1 em{font-style:normal;color:var(--petrol)}
.hero .lede{margin:22px 0 28px}
.hero .actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.hero .note{font-family:var(--mono);font-size:12px;color:var(--ink-3);margin:16px 0 0}

/* the signature: a wall drawn to scale, settling on its U-value */
.spec{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r-card);padding:22px 24px 20px;position:relative}
.spec .shead{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px}
.spec .shead .eyebrow{margin:0}.spec .shead .eyebrow::after{display:none}
.pill{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;padding:3px 10px;border-radius:100px;white-space:nowrap}
.pill.pass{color:var(--pass);background:var(--pass-soft)}
.pill.hold{color:var(--hold);background:var(--hold-soft)}
.ubig{display:flex;align-items:baseline;gap:10px;margin:2px 0 16px}
.ubig b{font-family:var(--wordmark);font-weight:700;font-size:64px;line-height:1;letter-spacing:-.035em;font-variant-numeric:tabular-nums;min-width:3.2ch}
.ubig .unit{display:flex;flex-direction:column;line-height:1.25;font-size:13px;color:var(--ink-2)}
.ubig .unit small{color:var(--ink-3);font-family:var(--mono);font-size:11px}
.lbar{display:flex;height:40px;border-radius:var(--r-input);overflow:hidden;border:1px solid var(--rule)}
.lbar span{display:block;height:100%;transform-origin:left center;border-right:1px solid rgba(22,40,31,.18);animation:draw .6s cubic-bezier(.2,.7,.2,1) both;animation-delay:calc(var(--i)*160ms + 200ms)}
.lbar span:last-child{border-right:0}
.lbar span.air{background-image:repeating-linear-gradient(135deg,transparent 0 4px,rgba(22,40,31,.14) 4px 5px)}
.lkey{font-family:var(--mono);font-size:11px;color:var(--ink-2);line-height:1.6;margin:10px 0 0}
.clause{margin:18px 0 0;padding-top:16px;border-top:1px solid var(--rule-soft)}
.clause h4{font-family:var(--sans);font-size:11px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;margin:0 0 6px;display:flex;gap:9px;align-items:baseline}
.clause h4 i{font-style:normal;font-family:var(--mono);color:var(--petrol);font-weight:500}
.clause p{font-size:12.5px;color:var(--ink-2);margin:0;line-height:1.55;max-width:none}
.clause .tl{color:var(--petrol);font-weight:500;font-size:12px;margin:0 0 5px}
.reveal{animation:rise .5s ease both}
.clause .tl{animation-delay:1.35s}.clause p{animation-delay:1.55s}
@keyframes draw{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@keyframes rise{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.corner{position:absolute;width:18px;height:18px;border:2px solid var(--bracket);pointer-events:none}
.corner.tl{top:-7px;left:-7px;border-right:0;border-bottom:0}
.corner.br{bottom:-7px;right:-7px;border-left:0;border-top:0}

/* three columns */
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:0;border:1px solid var(--rule);border-radius:var(--r-card);background:var(--surface);overflow:hidden}
.col{padding:26px 26px 24px;border-left:1px solid var(--rule)}
.col:first-child{border-left:0}
@media(max-width:820px){.col{border-left:0;border-top:1px solid var(--rule)}.col:first-child{border-top:0}}
.col .eyebrow{margin-bottom:10px}
.col p{color:var(--ink-2);font-size:15px;margin:8px 0 0}
.col .ref{font-family:var(--mono);color:var(--petrol);background:var(--petrol-soft);border-radius:var(--r-input);padding:1px 6px;font-size:13px}

/* types */
.types{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}
.type{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r-card);padding:16px 17px 14px;display:flex;flex-direction:column;gap:5px;min-height:112px}
a.type{color:inherit;text-decoration:none}
a.type:hover{border-color:var(--petrol)}
.type .tk{display:flex;justify-content:space-between;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.type .tk b{color:var(--petrol);font-weight:500}
.type .tn{font-weight:600;font-size:16px;margin-top:4px}
.type .td{color:var(--ink-2);font-size:13.5px;line-height:1.4}
.total{font-family:var(--mono);font-size:12px;color:var(--ink-3);margin:14px 0 0}

/* what it produces — real output, not mock-ups */
.shots{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin-top:34px}
@media(max-width:820px){.shots{grid-template-columns:1fr}}
.shot{margin:0;background:var(--surface);border:1px solid var(--rule);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column}
.shot img{display:block;width:100%;height:auto;border-bottom:1px solid var(--rule-soft);background:#fff}
.shot figcaption{padding:14px 18px 16px}
.shot .cap{font-weight:600;font-size:15px;margin:0 0 4px}
.shot .sub{color:var(--ink-2);font-size:14px;line-height:1.5;margin:0}
.shot .eyebrow{margin:0 0 8px}
.shotnote{font-family:var(--mono);font-size:12px;color:var(--ink-3);margin:18px 0 0}

/* practice section */
.two{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:start}
@media(max-width:820px){.two{grid-template-columns:1fr;gap:32px}}
.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.list li{padding:16px 0;border-top:1px solid var(--rule-soft);display:grid;grid-template-columns:34px minmax(0,1fr);gap:14px;align-items:start}
.list li:first-child{border-top:0}
.list li i{font-style:normal;font-family:var(--mono);color:var(--petrol);font-size:12px;line-height:1.7;letter-spacing:.06em}
.list li b{display:block;font-weight:600;margin-bottom:2px}
.list li span{color:var(--ink-2);font-size:15px}

/* the boundary */
.boundary{background:var(--well);border-top:1px solid var(--rule-soft)}
.boundary .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center}
@media(max-width:820px){.boundary .wrap{grid-template-columns:1fr}}
.boundary blockquote{margin:0;font-family:var(--wordmark);font-weight:600;font-size:clamp(24px,3vw,34px);letter-spacing:-.02em;line-height:1.15}
.boundary blockquote em{font-style:normal;color:var(--petrol)}
.boundary p{color:var(--ink-2);font-size:15.5px}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;margin-top:8px}
.plan{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r-card);padding:24px 24px 22px;display:flex;flex-direction:column;gap:6px;position:relative}
.plan.mid{border-color:var(--petrol)}
.plan .eyebrow{margin-bottom:6px}.plan .eyebrow::after{display:none}
.plan .price{font-family:var(--wordmark);font-weight:700;font-size:40px;letter-spacing:-.03em;line-height:1;font-variant-numeric:tabular-nums;margin:4px 0 2px}
.plan .price small{font-family:var(--sans);font-weight:500;font-size:14px;letter-spacing:0;color:var(--ink-2)}
.plan .alt{font-family:var(--mono);font-size:12px;color:var(--ink-3);margin:0 0 12px}
.plan ul{margin:0 0 18px;padding:0;list-style:none;display:flex;flex-direction:column;gap:6px;font-size:14.5px;color:var(--ink-2);flex:1}
.plan li::before{content:"—";color:var(--petrol);margin-right:8px}
.plan .soon{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);text-align:center;padding:9px;border:1px dashed var(--rule);border-radius:var(--r-ctl)}
.founder{margin-top:22px;border:1px solid var(--rule);background:var(--hold-soft);border-radius:var(--r-card);padding:14px 18px;display:flex;gap:14px;align-items:center;flex-wrap:wrap;font-size:14.5px}
.founder .pill{flex:none}
.vat{font-family:var(--mono);font-size:12px;color:var(--ink-3);margin:12px 0 0}

/* waiting list */
.join{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r-card);padding:24px;display:flex;flex-direction:column;gap:14px}
.join label{display:flex;flex-direction:column;gap:5px;font-size:13.5px;font-weight:500;color:var(--ink-2)}
.join label .req{position:absolute;left:-9999px}
.join input[type=text],.join input[type=email]{border:1px solid var(--rule);background:var(--paper);border-radius:var(--r-ctl);padding:11px 12px;font:inherit;font-size:15px;color:var(--ink);width:100%}
.join input:focus{border-color:var(--petrol);outline:none;background:var(--surface)}
.join input[aria-invalid="true"]{border-color:var(--hold)}
.join .pair{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:520px){.join .pair{grid-template-columns:1fr}}
.join .check{flex-direction:row;align-items:flex-start;gap:10px;font-weight:400;font-size:14px;line-height:1.5}
.join .check input{margin:3px 0 0;accent-color:var(--petrol);width:16px;height:16px;flex:none}
.join .hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.join button{justify-content:center;width:100%}
.join button:disabled{opacity:.5;cursor:not-allowed}
.jmsg{margin:0;font-size:14.5px;padding:11px 13px;border-radius:var(--r-ctl);border:1px solid var(--rule)}
.jmsg.ok{color:var(--pass);background:var(--pass-soft);border-color:transparent}
.jmsg.bad{color:var(--hold);background:var(--hold-soft);border-color:transparent}

/* faq */
.faq{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:0 40px}
.faq dt{font-weight:600;padding:18px 0 4px;border-top:1px solid var(--rule-soft)}
.faq dd{margin:0 0 14px;color:var(--ink-2);font-size:15px}

/* footer */
footer{border-top:1px solid var(--rule);padding:40px 0 48px;font-size:13.5px;color:var(--ink-2)}
footer .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}
footer p{margin:0 0 4px}
footer .links{display:flex;gap:8px 16px;flex-wrap:wrap;align-items:center}
/* A standalone navigation link needs a 24px pointer target. Inline links inside a sentence
   are exempt and are deliberately not touched: padding them would break the line spacing of
   the paragraph they sit in. */
footer .links a{display:inline-flex;align-items:center;min-height:24px}
footer .links span{color:var(--ink-3)}

/* sign-in */
.overlay{position:fixed;inset:0;z-index:80;background:rgba(10,18,14,.5);display:flex;align-items:center;justify-content:center;padding:24px;backdrop-filter:blur(3px)}
.overlay[hidden]{display:none}
.dialog{background:var(--surface);border-radius:var(--r-modal);max-width:460px;width:100%;box-shadow:var(--shadow-2);padding:30px 32px 28px;position:relative}
.dialog h2{font-size:26px;margin-bottom:8px}
.dialog p{color:var(--ink-2);font-size:15px}
.closeX{position:absolute;top:12px;right:14px;border:0;background:none;font-size:22px;color:var(--ink-3);line-height:1;padding:6px 10px;border-radius:var(--r-ctl)}
.closeX:hover{background:var(--well);color:var(--ink)}
.dialog .field{border:1px dashed var(--rule);border-radius:var(--r-input);padding:10px 12px;font-family:var(--mono);font-size:12px;color:var(--ink-3);margin:14px 0 18px}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.lbar span{transform:none}.reveal{opacity:1}}