/* tesserify.com (Tiers.md 3.252). The PAR2 Labs fonts, self-hosted (SIL OFL, see fonts/): Chakra Petch for display, Inter for text, Space Mono for labels. */
@font-face { font-family: "Chakra Petch"; font-style: normal; font-weight: 500; font-display: swap; src: url("/fonts/chakra-petch-500.woff2") format("woff2"); }
@font-face { font-family: "Chakra Petch"; font-style: normal; font-weight: 600; font-display: swap; src: url("/fonts/chakra-petch-600.woff2") format("woff2"); }
@font-face { font-family: "Chakra Petch"; font-style: normal; font-weight: 700; font-display: swap; src: url("/fonts/chakra-petch-700.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 400 700; font-display: swap; src: url("/fonts/inter-400-700.woff2") format("woff2"); }
@font-face { font-family: "Space Mono"; font-style: normal; font-weight: 400; font-display: swap; src: url("/fonts/space-mono-400.woff2") format("woff2"); }
@font-face { font-family: "Space Mono"; font-style: normal; font-weight: 700; font-display: swap; src: url("/fonts/space-mono-700.woff2") format("woff2"); }

:root {
  --ink: #040806; --ink2: #07100b; --panel: #09130d; --panel2: #0c1a12;
  --line: rgb(110 200 150 / .14); --line2: rgb(110 200 150 / .30);
  --text: #e7f1ea; --muted: #9db2a5; --faint: #6f877a;
  --green: #3cc07f; --green2: #7ce3ac; --deep: #1e5c3d; --rgb: 60 192 127;
  --head: "Chakra Petch", ui-sans-serif, system-ui, sans-serif;
  --body: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Space Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --wrap: 1320px; --pad: clamp(20px, 4vw, 56px);
  --ease: cubic-bezier(.2, .7, .2, 1);
}
* { box-sizing: border-box; }
html { color-scheme: dark; scroll-behavior: smooth; scroll-padding-top: 72px; }
body { margin: 0; background: var(--ink); color: var(--text); font-family: var(--body); font-size: 17px; line-height: 1.6; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: hidden; font-feature-settings: "cv11", "ss01"; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 2px solid var(--green); outline-offset: 4px; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 50; background: var(--green); color: #031008; padding: 10px 14px; font-weight: 700; }
.skip:focus { left: 12px; }
.grain { position: fixed; inset: 0; z-index: 40; pointer-events: none; opacity: .07; mix-blend-mode: screen; background-size: 160px 160px; }

/* ---------- top bar ---------- */
.bar { position: fixed; z-index: 30; inset: 0 0 auto 0; height: 68px; display: flex; align-items: center; gap: 28px; padding: 0 var(--pad); transition: background .35s, border-color .35s, backdrop-filter .35s; border-bottom: 1px solid transparent; }
.bar.solid-bg { background: rgb(4 8 6 / .72); backdrop-filter: blur(16px) saturate(1.2); -webkit-backdrop-filter: blur(16px) saturate(1.2); border-color: var(--line); }
.brand { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; }
.brand .mark { width: 34px; height: 30px; }
.brand .word { font-family: var(--head); font-weight: 700; letter-spacing: .34em; font-size: 14px; }
.links { display: flex; gap: 4px; margin-left: auto; }
.links a { font-family: var(--mono); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); padding: 0 14px; min-height: 44px; display: inline-flex; align-items: center; transition: color .2s; }
.links a:hover { color: var(--text); }
.jump { display: flex; gap: 10px; }
.jump a { font-family: var(--head); font-weight: 600; font-size: 14px; letter-spacing: .04em; min-height: 40px; padding: 0 16px; display: inline-flex; align-items: center; border: 1px solid var(--line2); transition: background .25s, border-color .25s, color .25s; }
.jump a:hover { border-color: var(--green); color: var(--green2); }
.jump a.solid { background: var(--green); border-color: var(--green); color: #031008; }
.jump a.solid:hover { background: var(--green2); border-color: var(--green2); color: #031008; }
.prog { position: absolute; left: 0; bottom: -1px; height: 1px; width: 100%; background: linear-gradient(90deg, var(--green), var(--green2)); transform: scaleX(var(--p, 0)); transform-origin: left; opacity: .9; }

/* ---------- shared ---------- */
.label { margin: 0; font-family: var(--mono); font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); display: flex; align-items: center; gap: 14px; }
.label .idx { color: var(--green); border: 1px solid var(--line2); padding: 3px 8px; letter-spacing: .12em; }
.acc { background: linear-gradient(95deg, var(--green2), var(--green) 55%, #a9f3c8); -webkit-background-clip: text; background-clip: text; color: transparent; }
.btn { font-family: var(--head); font-weight: 600; font-size: 15px; letter-spacing: .05em; text-transform: uppercase; display: inline-flex; align-items: center; gap: 12px; min-height: 52px; padding: 0 26px; border: 1px solid var(--line2); background: rgb(var(--rgb) / .04); transition: transform .3s var(--ease), background .25s, border-color .25s, color .25s; }
.btn i { font-style: normal; transition: transform .3s var(--ease); }
.btn:hover { border-color: var(--green); background: rgb(var(--rgb) / .12); }
.btn:hover i { transform: translateX(6px); }
.btn.solid { background: var(--green); border-color: var(--green); color: #031008; }
.btn.solid:hover { background: var(--green2); border-color: var(--green2); }
.cta { display: flex; flex-wrap: wrap; gap: 14px; }
.sec-head { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--pad); }
.sec-head h2, .story h2, .close h2 { font-family: var(--head); font-weight: 600; letter-spacing: -.015em; line-height: 1.02; margin: 22px 0 0; font-size: clamp(36px, 5.6vw, 84px); }
section { position: relative; }

/* ---------- reveal ---------- */
.rv { opacity: 0; transform: translateY(30px); transition: opacity 1s var(--ease), transform 1s var(--ease); transition-delay: var(--dl, 0s); animation: rvShow 0s 2.2s forwards; }
.rv.in { opacity: 1; transform: none; }
.d1 { --dl: .08s; } .d2 { --dl: .16s; } .d3 { --dl: .24s; } .d4 { --dl: .34s; } .d5 { --dl: .5s; }
html[data-js] .rv { animation: none; }
@keyframes rvShow { to { opacity: 1; transform: none; } }

/* ---------- 01 hero ---------- */
.hero { min-height: 100svh; display: flex; align-items: flex-end; overflow: hidden; }
#mesh { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.hero::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(180deg, rgb(4 8 6 / .55), transparent 28%, transparent 55%, var(--ink) 98%), radial-gradient(ellipse at 22% 70%, rgb(4 8 6 / .72), transparent 62%); }
.hero-in { position: relative; z-index: 2; width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 150px var(--pad) 70px; }
.hero h1 { font-family: var(--head); font-weight: 700; font-size: clamp(45px, 9.1vw, 147px); line-height: .9; letter-spacing: -.03em; margin: 26px 0 40px; text-transform: none; }
.hero h1 .ln { display: block; }
.hero-foot { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; flex-wrap: wrap; border-top: 1px solid var(--line); padding-top: 30px; }
.lede { max-width: 560px; margin: 0; color: var(--muted); font-size: clamp(16px, 1.5vw, 19px); }
.scroll { position: absolute; right: var(--pad); bottom: 16px; margin: 0; font-family: var(--mono); font-size: 11px; letter-spacing: .24em; text-transform: uppercase; color: var(--faint); display: flex; align-items: center; gap: 12px; }
.scroll span { width: 1px; height: 38px; background: linear-gradient(var(--green), transparent); animation: drip 2.4s var(--ease) infinite; transform-origin: top; }
@keyframes drip { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }
.corner { position: absolute; z-index: 2; width: 22px; height: 22px; border-color: var(--line2); border-style: solid; border-width: 0; }
.corner.tl { top: 84px; left: var(--pad); border-top-width: 1px; border-left-width: 1px; }
.corner.tr { top: 84px; right: var(--pad); border-top-width: 1px; border-right-width: 1px; }

/* ---------- 02 products ---------- */
.products { padding: clamp(80px, 12vw, 170px) 0 40px; }
.cards { max-width: var(--wrap); margin: clamp(40px, 6vw, 80px) auto 0; padding: 0 var(--pad); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(18px, 2.4vw, 34px); perspective: 1600px; }
.card { --mx: 50%; --my: 0%; --rx: 0deg; --ry: 0deg; position: relative; display: flex; flex-direction: column; overflow: hidden; background: linear-gradient(180deg, var(--panel2), var(--panel) 55%, #060e09); border: 1px solid var(--line); transform: rotateX(var(--rx)) rotateY(var(--ry)); transform-style: preserve-3d; transition: transform .5s var(--ease), border-color .3s, box-shadow .4s, opacity 1s var(--ease); will-change: transform; }
.card::before { content: ""; position: absolute; inset: -1px; padding: 1px; pointer-events: none; background: conic-gradient(from var(--ang, 0deg), transparent 0 62%, rgb(var(--rgb) / .95) 76%, transparent 90%); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity .4s; animation: spin 8s linear infinite; }
@property --ang { syntax: "<angle>"; inherits: false; initial-value: 0deg; }
@keyframes spin { to { --ang: 360deg; } }
.card:hover::before, .card:focus-visible::before { opacity: 1; }
.card .shine { position: absolute; inset: 0; z-index: 3; pointer-events: none; opacity: 0; transition: opacity .35s; background: radial-gradient(460px circle at var(--mx) var(--my), rgb(var(--rgb) / .12), transparent 65%); }
.card:hover .shine, .card:focus-visible .shine { opacity: 1; }
.card:hover, .card:focus-visible { border-color: var(--line2); box-shadow: 0 40px 100px -40px rgb(var(--rgb) / .28); outline: none; }
.card:focus-visible { outline: 2px solid var(--green); outline-offset: 5px; }
.ghost { position: absolute; z-index: 0; right: -6px; top: -26px; font-family: var(--head); font-weight: 700; font-size: clamp(150px, 17vw, 260px); line-height: 1; letter-spacing: -.04em; color: transparent; -webkit-text-stroke: 1px rgb(var(--rgb) / .16); pointer-events: none; user-select: none; }
.art { position: relative; z-index: 1; display: block; width: 100%; height: auto; aspect-ratio: 640 / 420; border-bottom: 1px solid var(--line); }
.body { position: relative; z-index: 2; padding: 26px clamp(22px, 2.6vw, 38px) 34px; display: flex; flex-direction: column; gap: 14px; flex: 1; }
.kicker { margin: 0; display: flex; justify-content: space-between; gap: 12px; font-family: var(--mono); font-size: 11px; letter-spacing: .18em; text-transform: uppercase; color: var(--green); }
.kicker span:last-child { color: var(--faint); }
.body h3 { margin: 0; font-family: var(--head); font-weight: 600; font-size: clamp(32px, 3.4vw, 48px); letter-spacing: -.015em; line-height: 1.05; }
.body > p { margin: 0; color: var(--muted); max-width: 520px; }
.mini { margin: 6px 0 0; padding: 14px 0 0; border-top: 1px solid var(--line); display: grid; gap: 10px; }
.mini div { display: grid; grid-template-columns: 110px 1fr; gap: 14px; align-items: baseline; }
.mini dt { font-family: var(--mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--faint); }
.mini dd { margin: 0; font-size: 14.5px; color: var(--text); }
.go { margin-top: auto; padding-top: 18px; display: inline-flex; align-items: center; gap: 12px; min-height: 48px; font-family: var(--head); font-weight: 600; font-size: 15px; letter-spacing: .06em; text-transform: uppercase; color: var(--green2); }
.go i { font-style: normal; transition: transform .35s var(--ease); }
.card:hover .go i, .card:focus-visible .go i { transform: translateX(10px); }

/* ---------- 03 together ---------- */
.together { height: 360vh; }
.pin { position: sticky; top: 0; height: 100vh; overflow: hidden; }
.stage { height: 100%; max-width: var(--wrap); margin: 0 auto; padding: 96px var(--pad) 40px; display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.35fr); gap: clamp(24px, 4vw, 64px); align-items: center; }
.story h2 { font-size: clamp(34px, 4.2vw, 64px); }
.steps { list-style: none; margin: 40px 0 0; padding: 0; display: grid; gap: 0; counter-reset: s; }
.steps li { counter-increment: s; position: relative; padding: 18px 0 18px 64px; border-top: 1px solid var(--line); opacity: .38; transition: opacity .5s var(--ease), transform .5s var(--ease); }
.steps li::before { content: "0" counter(s); position: absolute; left: 0; top: 20px; font-family: var(--mono); font-size: 13px; letter-spacing: .12em; color: var(--green); }
.steps li::after { content: ""; position: absolute; left: -1px; top: -1px; width: 2px; height: 0; background: var(--green); transition: height .5s var(--ease); }
.steps li.on { opacity: 1; }
.steps li.on::after { height: calc(100% + 1px); }
.steps b { display: block; font-family: var(--head); font-weight: 600; font-size: 24px; letter-spacing: .01em; margin-bottom: 4px; }
.steps span { display: block; color: var(--muted); font-size: 15px; max-width: 460px; }
.steps code { font-family: var(--mono); font-size: .86em; color: var(--green2); }
.scene { margin: 0; border: 1px solid var(--line); background: linear-gradient(180deg, rgb(12 26 18 / .85), rgb(6 14 9 / .92)); position: relative; }
.scene::before, .scene::after { content: ""; position: absolute; width: 14px; height: 14px; border: 1px solid var(--green); }
.scene::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; } .scene::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }
.scene canvas { display: block; width: 100%; height: auto; aspect-ratio: 1200 / 720; }

/* ---------- 04 spec ---------- */
.spec { padding: clamp(80px, 12vw, 160px) 0 clamp(60px, 8vw, 120px); }
.sheet { max-width: var(--wrap); margin: clamp(40px, 6vw, 72px) auto 0; padding: 0 var(--pad); display: grid; grid-template-columns: minmax(0, 1fr) 110px minmax(0, 1fr); gap: 0; }
.col h3 { margin: 0 0 18px; font-family: var(--head); font-weight: 600; font-size: 30px; letter-spacing: -.005em; }
.col dl { margin: 0; border-top: 1px solid var(--line2); }
.col dl div { display: grid; grid-template-columns: 130px 1fr; gap: 16px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.col dt { font-family: var(--mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--green); padding-top: 3px; }
.col dd { margin: 0; color: var(--text); font-size: 15.5px; }
.more { display: inline-flex; align-items: center; gap: 10px; margin-top: 22px; min-height: 44px; font-family: var(--mono); font-size: 13px; letter-spacing: .08em; color: var(--green2); }
.more i { font-style: normal; transition: transform .3s var(--ease); } .more:hover i { transform: translateX(6px); }
.link { display: flex; flex-direction: column; align-items: center; justify-content: center; margin-top: 58px; }
.link span { flex: 1; width: 1px; background: linear-gradient(transparent, var(--line2), transparent); }
.link em { font-style: normal; font-family: var(--mono); font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--green2); text-align: center; padding: 14px 0; line-height: 1.5; }

.close { text-align: center; padding: clamp(60px, 9vw, 130px) var(--pad) clamp(80px, 10vw, 150px); border-top: 1px solid var(--line); background: radial-gradient(ellipse at 50% 120%, rgb(var(--rgb) / .12), transparent 60%); }
.close h2 { margin: 0 0 40px; font-size: clamp(40px, 7vw, 108px); }
.close .cta { justify-content: center; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); padding: 44px var(--pad) 40px; background: #030705; }
.cols { max-width: var(--wrap); margin: 0 auto; display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 28px; }
.cols div { display: flex; flex-direction: column; gap: 2px; }
.cols b { font-family: var(--mono); font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--green); margin-bottom: 8px; }
.cols a { color: var(--muted); min-height: 34px; display: inline-flex; align-items: center; font-size: 15px; transition: color .2s; }
.cols a:hover, .cols a:focus-visible { color: var(--green2); }
.who p { margin: 0; color: var(--muted); font-size: 15px; }
.legal { max-width: var(--wrap); margin: 34px auto 0; color: var(--faint); font-size: 13px; }

/* ---------- small screens: no pinning, one column ---------- */
@media (max-width: 960px) {
  .links { display: none; } .jump { margin-left: auto; }
  .cards { grid-template-columns: 1fr; } .card { transform: none !important; }
  .together { height: auto; padding: 70px 0 20px; } .pin { position: static; height: auto; overflow: visible; }
  .stage { grid-template-columns: 1fr; padding: 0 var(--pad); gap: 34px; }
  .steps li { opacity: 1; } .steps li::after { height: calc(100% + 1px); }
  .sheet { grid-template-columns: 1fr; gap: 46px; } .link { display: none; }
  .cols { grid-template-columns: 1fr 1fr; }
  .hero-in { padding-top: 120px; } .scroll { display: none; }
  .corner { display: none; }
}
@media (max-width: 560px) {
  .jump a:not(.solid) { display: none; } .brand .word { letter-spacing: .24em; font-size: 12.5px; }
  .mini div, .col dl div { grid-template-columns: 1fr; gap: 2px; }
  .cols { grid-template-columns: 1fr; }
  .btn { width: 100%; justify-content: space-between; } .cta { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rv { opacity: 1; transform: none; transition: none; animation: none; }
  .scroll span, .card::before { animation: none; }
  .card, .btn i, .go i, .more i, .steps li, .steps li::after { transition: none; }
}
@media print { .grain, #mesh { display: none; } body { background: #fff; color: #000; } }

/* reduced motion: the story is not pinned; every step is shown and the picture is the finished one */
html[data-static] .together { height: auto; padding: 70px 0 20px; }
html[data-static] .pin { position: static; height: auto; overflow: visible; }
html[data-static] .stage { grid-template-columns: 1fr; padding: 0 var(--pad); gap: 34px; }
html[data-static] .steps li { opacity: 1; } html[data-static] .steps li::after { height: calc(100% + 1px); }