/* T-430 GradeVu landing page. Dark only, monochrome with the one GradeVu accent (lime, the app's
   primary-action color), Geist and Geist Mono served from this origin (SIL OFL, fonts/OFL.txt).
   Tokens follow docs/design/README.md "Visual system". */

@font-face{font-family:"Geist";src:url("/fonts/Geist-Regular.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Geist";src:url("/fonts/Geist-Medium.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:"Geist Mono";src:url("/fonts/GeistMono-Regular.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}

:root{
  --bg:#0A0B0D;
  --bg-raised:#101215;
  --surface:#141619;
  --text:#F3F4F6;
  --text-2:#A3A9B2;
  --text-3:#8E949C;
  --line:rgba(243,244,246,.09);
  --line-2:rgba(243,244,246,.16);
  --line-3:rgba(243,244,246,.32);
  --lime:#D4F53C;
  --lime-press:#E8FF8A;
  --amber:#FFB547;
  --gutter:16px;
  --max:1376px;
  --sans:"Geist",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"Geist Mono",ui-monospace,"SF Mono",Menlo,monospace;
  color-scheme:dark;
}
@media (min-width:700px){:root{--gutter:32px}}

*,*::before,*::after{box-sizing:border-box}
html{background:var(--bg);-webkit-text-size-adjust:100%;text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.55;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-feature-settings:"kern"}
a{color:inherit}
q{quotes:"\201C" "\201D"}
cite{font-style:normal}
::selection{background:var(--lime);color:var(--bg)}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:2px}

.vh{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;left:var(--gutter);top:-100px;z-index:20;background:var(--lime);color:var(--bg);padding:10px 14px;font-weight:500;text-decoration:none;border-radius:4px}
.skip:focus{top:12px}

/* Fine frame rules along the gutters, like a drawing sheet. */
.frame{position:fixed;inset:0 var(--gutter);border-left:1px solid var(--line);border-right:1px solid var(--line);pointer-events:none;z-index:0}

/* ---- labels ---------------------------------------------------------------------------------------- */
.kicker,.label,.index,.fig-cap,.spec dt,.node-k,.node-s,.tech-id,.notice-k,.tag,.step-no,.field-label,.dim-label,.gap-label,.corner-label{
  font-family:var(--mono);font-weight:400;letter-spacing:.08em;text-transform:uppercase}
.kicker{display:flex;align-items:center;gap:10px;margin:0 0 28px;font-size:12px;color:var(--text-2)}
.status-dot{width:7px;height:7px;background:var(--lime);border-radius:50%;box-shadow:0 0 0 4px rgba(212,245,60,.12)}
.label{margin:0 0 10px;font-size:11px;color:var(--text-3)}

/* ---- top bar --------------------------------------------------------------------------------------- */
.bar{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:24px;height:64px;padding:0 calc(var(--gutter) + 16px);
  background:rgba(10,11,13,.82);border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
@media (max-width:699px){.bar{padding:0 var(--gutter)}}
.wordmark{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:500;font-size:17px;letter-spacing:-.01em}
.mark{width:20px;height:20px;color:var(--text)}
.mark-dot{fill:var(--lime)}
.nav{display:none;gap:28px;margin-left:auto;font-size:14px}
.nav a{text-decoration:none;color:var(--text-2)}
.nav a:hover{color:var(--text)}
.bar-cta{margin-left:auto;font-size:13px;text-decoration:none;border:1px solid var(--line-3);padding:8px 14px;border-radius:999px;white-space:nowrap}
.bar-cta:hover{border-color:var(--text)}
@media (min-width:900px){.nav{display:flex}.bar-cta{margin-left:8px}}

/* ---- layout ---------------------------------------------------------------------------------------- */
main,.foot{position:relative;z-index:1}
.hero,.specs,.section,.foot{width:100%;max-width:calc(var(--max) + 2 * var(--gutter));margin:0 auto;padding-left:calc(var(--gutter) + 16px);padding-right:calc(var(--gutter) + 16px)}
@media (max-width:699px){.hero,.specs,.section,.foot{padding-left:calc(var(--gutter) + 4px);padding-right:calc(var(--gutter) + 4px)}}

/* ---- hero ------------------------------------------------------------------------------------------ */
.hero{position:relative;display:grid;gap:48px;padding-top:56px;padding-bottom:56px;overflow:hidden}
.hero-grid{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:72px 72px;background-position:-1px -1px;
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 70% 45%,#000 20%,transparent 75%);mask-image:radial-gradient(ellipse 80% 70% at 70% 45%,#000 20%,transparent 75%);opacity:.55}
.hero-copy{position:relative;align-self:center}
.display{margin:0;font-weight:500;font-size:clamp(34px,9.6vw,64px);line-height:.98;letter-spacing:-.045em}
.display .line{display:block}
.display .line+.line{color:var(--text-2)}
.lede{max-width:34em;margin:28px 0 0;font-size:17px;line-height:1.6;color:var(--text-2)}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px 28px;margin-top:36px}
.btn-primary{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border:0;border-radius:999px;
  background:var(--lime);color:#0A0B0D;font:500 15px/1 var(--sans);letter-spacing:-.005em;text-decoration:none;cursor:pointer;transition:background-color .15s ease}
.btn-primary:hover{background:var(--lime-press)}
.btn-primary:active{background:var(--lime-press)}
.btn-primary[disabled]{opacity:.6;cursor:progress}
.text-link{font-size:15px;color:var(--text);text-decoration:none;border-bottom:1px solid var(--line-3);padding-bottom:2px}
.text-link:hover{border-color:var(--text)}

.hero-figure{position:relative;margin:0;justify-self:center;width:min(88%,340px)}
.schematic{display:block;width:100%;height:auto;overflow:visible}
.fig-cap{display:grid;gap:6px;margin-top:14px;font-size:11px;color:var(--text-3);text-align:center}
.fig-id{color:var(--text-2)}

/* the diagram */
.schematic .dim path,.schematic .ticks path,.schematic .gap path{fill:none;stroke:var(--line-3);stroke-width:1.5}
.schematic .gap path{stroke:var(--text-2)}
.dim-label,.gap-label,.corner-label{fill:var(--text-3);font-size:17px}
.gap-label{fill:var(--text-2);font-size:20px}
.schematic .edge{fill:none;stroke:rgba(243,244,246,.62);stroke-width:2}
.schematic .border{fill:rgba(243,244,246,.015);stroke:var(--line-2);stroke-width:1.5;stroke-dasharray:6 6}
.schematic .grid-lines path{fill:none;stroke:var(--line);stroke-width:1}
.schematic .corners path{fill:none;stroke:var(--lime);stroke-width:3;stroke-linecap:square}
/* Without motion: a still of one pass part way down the face (the upper rows lit, the line resting). */
.schematic .cell{fill:#F3F4F6;opacity:.02}
.schematic .r1,.schematic .r2,.schematic .r3{opacity:.085}
.schematic .scan{transform:translateY(410px)}
.schematic .scan-line{fill:var(--lime)}

@media (prefers-reduced-motion:no-preference){
  .schematic .cell{opacity:0;animation:7s cubic-bezier(.4,0,.2,1) infinite}
  .schematic .r1{animation-name:cell1}.schematic .r2{animation-name:cell2}.schematic .r3{animation-name:cell3}
  .schematic .r4{animation-name:cell4}.schematic .r5{animation-name:cell5}.schematic .r6{animation-name:cell6}
  .schematic .scan{opacity:0;transform:none;animation:scan 7s cubic-bezier(.45,0,.55,1) infinite}
  .hero-copy>*{animation:rise .9s cubic-bezier(.2,.7,.2,1) both}
  .hero-copy>:nth-child(2){animation-delay:.08s}.hero-copy>:nth-child(3){animation-delay:.16s}.hero-copy>:nth-child(4){animation-delay:.24s}
  .hero-figure{animation:fade 1.4s .2s ease both}
}
/* One pass: the line enters at the top edge, crosses the face in 5.2 s, then rests; each row of areas
   lights as the line passes it and all clear together before the next pass. */
@keyframes scan{0%{opacity:0;transform:translateY(0)}6%{opacity:1;transform:translateY(0)}80%{opacity:1;transform:translateY(821px)}88%,100%{opacity:0;transform:translateY(821px)}}
@keyframes cell1{0%,13%{opacity:0}17%,86%{opacity:.09}94%,100%{opacity:0}}
@keyframes cell2{0%,25%{opacity:0}29%,86%{opacity:.09}94%,100%{opacity:0}}
@keyframes cell3{0%,37%{opacity:0}41%,86%{opacity:.09}94%,100%{opacity:0}}
@keyframes cell4{0%,49%{opacity:0}53%,86%{opacity:.09}94%,100%{opacity:0}}
@keyframes cell5{0%,62%{opacity:0}66%,86%{opacity:.09}94%,100%{opacity:0}}
@keyframes cell6{0%,74%{opacity:0}78%,86%{opacity:.09}94%,100%{opacity:0}}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@keyframes fade{from{opacity:0}to{opacity:1}}

@media (min-width:900px){
  .hero{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:40px;min-height:calc(100vh - 64px);max-height:980px;padding-top:72px;padding-bottom:72px}
  .display{font-size:clamp(56px,6.1vw,92px)}
  .lede{font-size:19px}
  .hero-figure{width:100%;max-width:480px;justify-self:end}
}

/* ---- spec strip ------------------------------------------------------------------------------------ */
.specs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:0;margin-bottom:0}
.spec{padding:20px 16px 22px 0;border-top:1px solid var(--line)}
.spec dt{font-size:11px;color:var(--text-3)}
.spec dd{margin:6px 0 0;font-size:15px;color:var(--text)}
@media (min-width:900px){.specs{grid-template-columns:repeat(4,minmax(0,1fr))}.spec{padding:24px 24px 26px 0}.spec+.spec{padding-left:24px;border-left:1px solid var(--line)}}
@media (max-width:899px){.spec:nth-child(even){padding-left:16px;border-left:1px solid var(--line)}}

/* ---- sections -------------------------------------------------------------------------------------- */
.section{position:relative;padding-top:88px;padding-bottom:88px;border-top:1px solid var(--line)}
.section::before,.section::after{content:"+";position:absolute;top:-12px;font:300 16px/24px var(--mono);color:var(--line-3)}
.section::before{left:calc(var(--gutter) - 4px)}
.section::after{right:calc(var(--gutter) - 4px)}
@media (max-width:699px){.section::before,.section::after{display:none}}
.section-head{display:grid;gap:18px;margin-bottom:56px}
.index{display:flex;gap:14px;margin:0;font-size:12px;color:var(--text-3)}
.index span:first-child{color:var(--lime)}
.h2{margin:0;max-width:16em;font-weight:500;font-size:clamp(30px,7vw,60px);line-height:1.02;letter-spacing:-.04em}
.section-lede{max-width:38em;margin:0;font-size:17px;color:var(--text-2)}
.h3{margin:0;font-weight:500;font-size:21px;line-height:1.25;letter-spacing:-.02em}
.body{margin:12px 0 0;color:var(--text-2);font-size:16px}
@media (min-width:900px){
  .section{padding-top:128px;padding-bottom:128px}
  .section-head{grid-template-columns:minmax(0,4fr) minmax(0,8fr);column-gap:40px;margin-bottom:80px}
  .section-head .index{grid-row:1 / span 2;padding-top:14px}
  .section-head .h2,.section-head .section-lede{grid-column:2}
}

/* product */
.pillars{list-style:none;margin:0;padding:0;display:grid;gap:0}
.pillar{padding:28px 0 32px;border-top:1px solid var(--line)}
.icon{width:40px;height:40px;margin-bottom:22px;fill:none;stroke:var(--text-2);stroke-width:1.5}
.icon .accent-stroke{stroke:var(--lime)}
.icon .accent-fill{fill:var(--lime);stroke:none;opacity:.85}
@media (min-width:900px){
  .pillars{grid-template-columns:repeat(3,minmax(0,1fr))}
  .pillar{padding:32px 32px 8px 0}
  .pillar+.pillar{padding-left:32px;border-left:1px solid var(--line)}
}
.estimate-note{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px 16px;margin:56px 0 0;padding-top:24px;border-top:1px dashed var(--line-2);font-size:15px;color:var(--text-2)}
.tag{display:inline-block;font-size:11px;color:var(--text);border:1px solid var(--line-3);border-radius:6px;padding:3px 8px}
cite{color:var(--text-3);font-size:13px;margin-left:4px}

/* how it works */
.steps{list-style:none;margin:0;padding:0;display:grid;counter-reset:step}
.step{position:relative;padding:28px 0 36px 0;border-top:1px solid var(--line)}
.step-no{margin:0 0 18px;font-size:13px;color:var(--lime)}
@media (min-width:900px){
  .steps{grid-template-columns:repeat(3,minmax(0,1fr))}
  .step{padding:0 32px 0 0;border-top:0}
  .step+.step{padding-left:32px}
  /* a measuring rule across the steps */
  .steps{position:relative;padding-top:44px}
  .steps::before{content:"";position:absolute;left:0;right:0;top:0;height:9px;
    background:linear-gradient(90deg,var(--line-3) 1px,transparent 1px) 0 0/calc(100% / 24) 5px repeat-x,
               linear-gradient(90deg,var(--line-3) 1px,transparent 1px) 0 0/calc(100% / 3) 9px repeat-x;
    border-top:1px solid var(--line-3)}
  .step-no{font-size:56px;line-height:1;letter-spacing:-.02em;color:var(--text);opacity:.9;font-family:var(--mono)}
  .step-no::first-letter{color:var(--text-3)}
}

/* technology */
.pipeline{list-style:none;margin:0 0 56px;padding:0;display:grid;gap:28px}
.node{position:relative;display:grid;gap:4px;padding:18px 20px;border:1px solid var(--line-2);border-radius:4px;background:var(--bg-raised)}
.node::before,.node::after{content:"";position:absolute;width:7px;height:7px;border:solid var(--text-3);border-width:1px 0 0 1px;top:-1px;left:-1px}
.node::after{border-width:0 1px 1px 0;top:auto;left:auto;right:-1px;bottom:-1px}
.node-k{font-size:11px;color:var(--lime)}
.node-v{font-size:18px;font-weight:500;letter-spacing:-.015em}
.node-s{font-size:11px;color:var(--text-3)}
/* connectors: vertical on phones, horizontal on wide screens, with a slow signal moving along them */
.node:not(:last-child) .node-s::after{content:"";position:absolute;left:50%;bottom:-29px;width:1px;height:28px;background:var(--line-3)}
@media (prefers-reduced-motion:no-preference){
  .node:not(:last-child) .node-s::before{content:"";position:absolute;left:calc(50% - 2px);bottom:-29px;width:5px;height:5px;background:var(--lime);border-radius:50%;animation:signal-v 3.2s ease-in-out infinite}
  .node:nth-child(2) .node-s::before{animation-delay:1.6s}
}
@keyframes signal-v{0%{transform:translateY(-24px);opacity:0}15%{opacity:1}85%{opacity:1}100%{transform:translateY(0);opacity:0}}
@media (min-width:900px){
  .pipeline{grid-template-columns:repeat(3,minmax(0,1fr));gap:64px;margin-bottom:72px}
  .node:not(:last-child) .node-s::after{left:auto;right:-65px;bottom:auto;top:50%;width:64px;height:1px}
  .node:not(:last-child) .node-s::before{left:auto;right:-62px;bottom:auto;top:calc(50% - 2px);animation-name:signal-h}
}
@keyframes signal-h{0%{transform:translateX(-56px);opacity:0}15%{opacity:1}85%{opacity:1}100%{transform:translateX(0);opacity:0}}
.tech{margin:0}
.tech-row{display:grid;gap:10px;padding:26px 0;border-top:1px solid var(--line)}
.tech-row dt{display:flex;gap:16px;align-items:baseline;font-weight:500;font-size:19px;letter-spacing:-.015em}
.tech-id{font-size:12px;color:var(--text-3);font-weight:400;min-width:3.5em}
.tech-row dd{margin:0;color:var(--text-2);max-width:44em}
@media (min-width:900px){.tech-row{grid-template-columns:minmax(0,4fr) minmax(0,8fr);column-gap:40px;padding:32px 0}}

/* waitlist */
.wl-panel{display:grid;gap:32px}
@media (min-width:900px){.wl-panel{grid-template-columns:minmax(0,4fr) minmax(0,8fr);column-gap:40px}.wl-panel>*{grid-column:2}}
.wl-form{display:grid;gap:22px;max-width:560px}
.field{display:grid;gap:8px}
.field-label{font-size:11px;color:var(--text-3);padding:0}
.optional{text-transform:none;letter-spacing:0;color:var(--text-3)}
.input{width:100%;height:52px;padding:0 16px;background:var(--surface);color:var(--text);border:1px solid var(--line-2);border-radius:4px;font:400 17px var(--sans);
  -webkit-appearance:none;appearance:none}
.input::placeholder{color:#6B717A}
.input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(212,245,60,.18)}
.roles{margin:0;padding:0;border:0;min-width:0}
.roles legend{margin-bottom:10px}
.role-options{display:flex;flex-wrap:wrap;gap:8px}
.role{position:relative;display:inline-flex}
.role input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.role span{display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border:1px solid var(--line-2);border-radius:999px;font-size:14px;color:var(--text-2);transition:border-color .15s,color .15s}
.role input:checked+span{border-color:var(--lime);color:var(--text);background:rgba(212,245,60,.08)}
.role input:focus-visible+span{outline:2px solid var(--lime);outline-offset:3px}
.role:hover span{border-color:var(--line-3)}
.hp{position:absolute;left:-10000px;top:auto;width:1px;height:1px;overflow:hidden}
.btn-submit{justify-self:start}
.wl-status{min-height:1.5em;margin:0;font-size:14px;color:var(--amber)}
.wl-status:empty{display:none}
.wl-notice{max-width:560px;margin:14px 0 0;font-size:13px;line-height:1.5;color:var(--text-2)}
.wl-notice a{color:inherit;text-decoration:underline;text-underline-offset:2px}
.notice-placeholder{max-width:560px;padding:16px 18px;border:1px dashed var(--amber);border-radius:4px;background:rgba(255,181,71,.05)}
.notice-k{margin:0 0 6px;font-size:11px;color:var(--amber)}
.notice-v{margin:0;font-size:14px;color:var(--text-2)}
.wl-success,.wl-closed{display:none;max-width:560px;padding:28px 0 4px;border-top:1px solid var(--lime)}
.wl-closed{border-top-color:var(--line-3)}
.wl-mark{width:10px;height:10px;margin:0 0 18px;background:var(--lime);border-radius:50%}
.wl-success:focus{outline:none}
[data-waitlist="joined"] .wl-form,[data-waitlist="joined"] .wl-notice{display:none}
[data-waitlist="joined"] .wl-success{display:block}
[data-waitlist="closed"] .wl-form,[data-waitlist="closed"] .wl-notice{display:none}
[data-waitlist="closed"] .wl-closed{display:block}

/* ---- footer ---------------------------------------------------------------------------------------- */
.foot{padding-top:56px;padding-bottom:0;border-top:1px solid var(--line);overflow:hidden}
.foot-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px}
.foot-links{display:flex;flex-wrap:wrap;gap:12px 28px;font-size:14px}
.foot-links a{color:var(--text-2);text-decoration:none}
.foot-links a:hover{color:var(--text)}
.foot-legal{max-width:62em;margin:36px 0 0;font-size:12px;line-height:1.6;color:var(--text-3)}
.foot-copy{margin:12px 0 0;font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--text-3)}
.foot-giant{margin:40px 0 0;height:.74em;font-weight:500;font-size:clamp(88px,24vw,360px);line-height:.74;letter-spacing:-.06em;color:var(--text);opacity:.045;white-space:nowrap;user-select:none;
  transform:translateY(8%)}
.foot-giant::before{content:"GradeVu"}

/* ---- result, 404 and legal pages ------------------------------------------------------------------- */
.result{min-height:100vh;display:grid;place-items:center}
.result-main{padding:40px var(--gutter);max-width:560px}
.result-title{margin:0 0 12px;font-weight:500;font-size:clamp(30px,6vw,44px);letter-spacing:-.035em;line-height:1.05}
.result-body{margin:0 0 28px;color:var(--text-2)}
.legal-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;padding:18px var(--gutter);border-bottom:1px solid var(--line)}
.legal-bar nav{display:flex;gap:20px;font-size:14px}
.legal-bar nav a{color:var(--text-2);text-decoration:none}
.legal-main{max-width:760px;margin:0 auto;padding:40px var(--gutter) 80px}
.legal-note{margin:0 0 32px;padding:12px 14px;border:1px dashed var(--line-3);border-radius:4px;font-size:13px;color:var(--text-3)}
.legal-title{margin:0 0 20px;font-weight:500;font-size:clamp(30px,6vw,44px);letter-spacing:-.035em;line-height:1.05}
.legal-h{margin:36px 0 10px;font-weight:500;font-size:20px;letter-spacing:-.015em}
.legal-p{margin:0 0 12px;color:var(--text-2);white-space:pre-wrap;overflow-wrap:anywhere}
.legal-foot{display:flex;gap:24px;padding:24px var(--gutter);border-top:1px solid var(--line);font-size:14px}
.legal-foot a{color:var(--text-2)}