/* Prometheus Labs — home page. Desktop matches the 1440 artboard (>=960px);
   mobile matches the 390 artboard (<960px). */
@font-face { font-family: 'Geist'; src: url('/assets/fonts/Geist-Variable.woff2') format('woff2'); font-weight: 100 900; font-display: swap; }
@font-face { font-family: 'Geist Mono'; src: url('/assets/fonts/GeistMono-Variable.woff2') format('woff2'); font-weight: 100 900; font-display: swap; }
:root {
  --ink: #0F1736; --ink2: #3A3E4A; --mut: #6C6F7A; --line: #E4E4E1; --line2: #CFCFCB;
  --blue: #032FD9; --blue-d: #0225B0; --card: #FEFEFE; --page: #FBFBFA;
  --sans: 'Geist', ui-sans-serif, system-ui, sans-serif;
  --mono: 'Geist Mono', ui-monospace, Menlo, monospace;
  --ease: cubic-bezier(.2,.7,.2,1);
  --rail: 16px;
}
* { box-sizing: border-box; }
html { overflow-x: clip; scroll-behavior: smooth; }
body { margin: 0; background: var(--page); color: var(--ink); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--ink); }
h1, h2, p { margin: 0; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

.page { position: relative; max-width: 1440px; margin: 0 auto; }
.rail { position: absolute; top: 0; bottom: 0; width: 1px; background: var(--line); pointer-events: none; }
.rail-l { left: var(--rail); }
.rail-r { right: var(--rail); }
section, header, footer { position: relative; }

/* full-bleed backgrounds + hairlines beyond the 1440 frame */
.bleed { background: var(--bleed); border-image: conic-gradient(var(--bleed) 0 0) fill 0 / / 0 100vmax; }
.hl-t::before, .hl-b::after {
  content: ''; position: absolute; height: 1px; background: var(--line);
  left: min(0px, calc(50% - 50vw)); right: min(0px, calc(50% - 50vw));
  transform-origin: left center; z-index: 1;
}
.hl-t::before { top: 0; }
.hl-b::after { bottom: 0; }
.cross { display: none; position: absolute; top: -6px; width: 11px; height: 11px; z-index: 2; }
.cross::before { content: ''; position: absolute; left: 5px; top: 0; width: 1px; height: 11px; background: var(--ink); }
.cross::after { content: ''; position: absolute; top: 5px; left: 0; width: 11px; height: 1px; background: var(--ink); }
.cross-l { left: calc(var(--rail) - 5px); }
.cross-r { right: calc(var(--rail) - 5px); }

.lbl { font: 500 10.5px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--mut); }
@media (max-width: 959.98px) { .d { display: none !important; } }

/* logo mark (stand-in) */
.brand { display: flex; align-items: center; gap: 9px; color: var(--ink); }
.brand:hover { color: var(--ink); }
.mark { display: block; width: 27px; height: 20px; flex-shrink: 0; }
.brand-name { font-size: 15px; font-weight: 600; letter-spacing: -0.3px; }

/* ---------- NAV ---------- */
.nav { height: 60px; padding: 0 28px; display: flex; align-items: center; justify-content: space-between; z-index: 20; }
.nav-links { display: none; }
.nav-demo { display: none; }
.burger { width: 44px; height: 44px; margin-right: -12px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; }
.burger span { width: 20px; height: 1.5px; background: var(--ink); transition: transform .2s var(--ease); }
.nav.open .burger span:first-child { transform: translateY(3.75px) rotate(45deg); }
.nav.open .burger span:last-child { transform: translateY(-3.75px) rotate(-45deg); }
.menu { display: none; position: absolute; top: 60px; left: 0; right: 0; background: var(--page); border-bottom: 1px solid var(--line); padding: 8px 28px 24px; flex-direction: column; }
.nav.open .menu { display: flex; }
.menu a { color: var(--ink); font-size: 17px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.menu a.btn-primary { margin-top: 20px; border: 0; color: var(--card); justify-content: center; }

/* ---------- BUTTONS ---------- */
.btn-primary, .btn-secondary { display: flex; align-items: center; justify-content: center; gap: 10px; font-size: 15px; font-weight: 500; height: 50px; }
.btn-primary { color: var(--card); background: var(--blue); transition: background .15s; }
.btn-primary:hover { background: var(--blue-d); color: var(--card); }
.btn-secondary { color: var(--ink); border: 1px solid var(--line2); background: var(--card); transition: border-color .15s; }
.btn-secondary:hover { border-color: var(--ink); color: var(--ink); }

/* ---------- HERO ---------- */
.hero { padding: 48px 28px; }
.announce { display: flex; align-items: center; gap: 10px; border: 1px solid var(--line); background: var(--card); padding: 5px 12px 5px 5px; font-size: 12.5px; color: var(--ink); transition: border-color .15s; }
.announce:hover { border-color: var(--ink); color: var(--ink); }
.announce-ic { flex-shrink: 0; width: 22px; height: 22px; background: var(--blue); display: flex; align-items: center; justify-content: center; }
.announce-ic svg { height: 12px; }
.announce-tx { flex: 1; }
.announce-ar { color: var(--blue); }
.hero h1 { margin-top: 28px; font-size: 39px; line-height: 1.06; font-weight: 500; letter-spacing: -1.3px; text-wrap: balance; }
.hero-row { margin-top: 20px; }
.hero-sub { font-size: 16.5px; line-height: 1.5; color: var(--ink2); text-wrap: pretty; }
.hero-ctas { margin-top: 28px; display: flex; flex-direction: column; gap: 10px; }

/* ---------- PRINCIPLES ---------- */
.prin-grid { margin: 0 16px; display: grid; grid-template-columns: 1fr; }
.pr { padding: 20px 12px; display: grid; grid-template-columns: 32px 1fr; gap: 4px 8px; border-bottom: 1px solid var(--line); }
.pr:last-child { border-bottom: 0; }
.pr-n { font: 500 11px var(--mono); color: var(--mut); padding-top: 3px; }
.pr-n.on { color: var(--blue); }
.pr-t { font-size: 16px; font-weight: 500; }
.pr-d { grid-column: 2; font-size: 14px; line-height: 1.5; color: var(--ink2); text-wrap: pretty; }

/* ---------- RIVER SHOWCASE ---------- */
.river { padding: 56px 16px; }
.rv-intro { padding: 0 12px; display: flex; flex-direction: column; gap: 20px; }
.rv-left, .rv-right { display: contents; }
.wordmark { width: 131px; height: 36px; display: block; }
.rv-intro h2 { font-size: 28px; line-height: 1.12; font-weight: 500; letter-spacing: -0.8px; text-wrap: balance; }
.rv-intro p { font-size: 15px; line-height: 1.55; color: var(--ink2); text-wrap: pretty; }
.rv-explore { font-size: 15px; font-weight: 500; color: var(--blue); display: flex; gap: 8px; }
.rv-explore:hover { color: var(--ink); }
.rv-stage { margin-top: 32px; }
.rv-stage [data-river] { width: 100%; overflow: hidden; }
.rv-stage [data-river="mobile"] { min-height: 1px; }
.caps { border: 1px solid var(--line); border-top: 0; background: var(--card); display: grid; grid-template-columns: 1fr; }
.cap { padding: 18px 16px; display: flex; flex-direction: column; gap: 6px; border-bottom: 1px solid var(--line); }
.cap:last-child { border-bottom: 0; }
.cap-k { font: 500 10.5px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--mut); }
.cap-t { font-size: 15.5px; font-weight: 500; }
.cap-d { font-size: 14px; line-height: 1.5; color: var(--ink2); text-wrap: pretty; }
.rv-btn { margin: 24px 12px 0; height: 48px; display: flex; align-items: center; justify-content: space-between; padding: 0 16px; border: 1px solid var(--blue); font-size: 15px; font-weight: 500; color: var(--blue); transition: background .15s, color .15s; }
.rv-btn:hover { background: var(--blue); color: var(--card); }
.rv-mwrap { max-width: 560px; margin: 0 auto; }

/* ---------- INDUSTRIES ---------- */
.ind { padding: 56px 28px; }
.ind-head h2 { margin-top: 16px; font-size: 28px; line-height: 1.12; font-weight: 500; letter-spacing: -0.8px; text-wrap: balance; }
.ind-head p { display: none; }
.ind-grid { margin-top: 28px; display: flex; flex-direction: column; gap: 10px; }
.ind-card { padding: 20px; display: flex; flex-direction: column; gap: 10px; background: var(--card); border: 1px solid var(--line); color: var(--ink); transition: border-color .2s, transform .2s; }
.ind-card:hover { border-color: var(--ink); color: var(--ink); transform: translateY(-2px); }
.ind-body { display: flex; flex-direction: column; gap: 10px; }
.ind-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.ind-title { font-size: 18px; font-weight: 500; }
.ind-desc { font-size: 14px; line-height: 1.5; color: var(--ink2); }
.ind-link { font-size: 14px; font-weight: 500; color: var(--blue); }
.ind-link.ink { color: var(--ink); }
.num { font: 500 11px var(--mono); color: var(--mut); }
.tag { display: inline-flex; align-items: center; gap: 6px; font: 500 10.5px var(--mono); color: var(--mut); border: 1px solid var(--line); padding: 2px 7px; white-space: nowrap; }
.tag.blue { color: var(--blue); border-color: var(--blue); }
.tag .dot { width: 5px; height: 5px; border-radius: 3px; background: var(--blue); }

/* ---------- PROOF ---------- */
.proof { --bleed: var(--card); padding: 48px 28px; }
.proof-in { display: flex; flex-direction: column; gap: 20px; }
.proof-l { display: contents; }
.live { display: inline-flex; align-self: flex-start; align-items: center; gap: 10px; font: 500 11px var(--mono); color: var(--blue); border: 1px solid var(--blue); padding: 5px 10px; }
.live-dot { position: relative; width: 7px; height: 7px; display: inline-block; }
.live-dot::before { content: ''; position: absolute; inset: 0; border-radius: 4px; background: var(--blue); }
.live-dot::after { content: ''; position: absolute; inset: -4px; border-radius: 8px; border: 1px solid var(--blue); animation: plPulse 2s ease-out infinite; }
@keyframes plPulse { 0% { transform: scale(.5); opacity: .8 } 100% { transform: scale(1.6); opacity: 0 } }
.proof p { font-size: 27px; line-height: 1.16; font-weight: 500; letter-spacing: -0.7px; text-wrap: balance; }

/* ---------- FOUNDER ---------- */
.founder { padding: 56px 28px; }
.fd { display: flex; flex-direction: column; gap: 24px; }
.fd-r { display: contents; }
.fd-2 { margin-top: 56px; padding-top: 56px; border-top: 1px solid var(--line); }
.portrait { width: 100%; aspect-ratio: 4/3; border: 1px solid var(--line); background: repeating-linear-gradient(135deg, #F1F1EE 0 8px, #FBFBFA 8px 16px); display: flex; align-items: flex-end; padding: 12px; overflow: hidden; }
.portrait img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 15%; display: block; }
.portrait.has-img { padding: 0; background: none; }
.portrait-lbl { font: 500 10.5px var(--mono); color: var(--mut); background: #FBFBFA; padding: 3px 6px; }
.fd-q { font-size: 22px; line-height: 1.35; font-weight: 400; letter-spacing: -0.4px; text-wrap: pretty; }
.fd-p { display: flex; flex-direction: column; gap: 14px; font-size: 15px; line-height: 1.6; color: var(--ink2); }
.fd-p p { text-wrap: pretty; }
.sig { display: flex; flex-direction: column; gap: 4px; padding-top: 16px; border-top: 1px solid var(--line); }
.sig-n { font-size: 15px; font-weight: 500; }
.sig-r { font: 500 11.5px var(--mono); color: var(--mut); }

/* ---------- CTA BAND ---------- */
.cta { --bleed: var(--ink); padding: 56px 28px; color: var(--card); z-index: 2; }
.cta-in { display: flex; flex-direction: column; gap: 16px; }
.cta-tx { display: contents; }
.cta h2 { font-size: 30px; line-height: 1.1; font-weight: 500; letter-spacing: -0.9px; text-wrap: balance; }
.cta p { font-size: 15px; line-height: 1.55; color: #C4C8D6; }
.cta-btns { margin-top: 12px; display: flex; flex-direction: column; gap: 10px; }
.cta .btn-primary:hover { background: #2450F0; }
.btn-ghost { display: flex; align-items: center; justify-content: center; height: 50px; font-size: 15px; font-weight: 500; color: var(--card); border: 1px solid #3A4466; transition: border-color .15s; }
.btn-ghost:hover { border-color: var(--card); color: var(--card); }

/* ---------- FOOTER ---------- */
.foot { padding: 40px 28px 28px; display: flex; flex-direction: column; gap: 28px; }
.ft-grid { display: flex; flex-direction: column; gap: 28px; }
.ft-brand { display: flex; flex-direction: column; gap: 14px; }
.ft-tag { font-size: 14px; color: var(--mut); }
.ft-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 24px 16px; font-size: 14px; }
.ft-col { display: flex; flex-direction: column; gap: 10px; }
.ft-col a { color: var(--ink); }
.ft-col a:hover { color: var(--blue); }
.ft-bot { padding-top: 16px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; font: 500 11px var(--mono); color: var(--mut); }

/* ---------- TABLET (mobile layout, wider) ---------- */
@media (min-width: 600px) and (max-width: 959.98px) {
  .prin-grid { grid-template-columns: 1fr 1fr; }
  .pr:nth-child(odd) { border-right: 1px solid var(--line); }
  .pr:nth-child(3) { border-bottom: 0; }
  .caps { grid-template-columns: 1fr; }
}

/* ---------- DESKTOP (1440 artboard) ---------- */
@media (min-width: 960px) {
  :root { --rail: clamp(40px, calc((100vw - 960px) * .125 + 40px), 100px); }
  .m { display: none !important; }
  .cross { display: block; }
  .lbl { font-size: 11px; }

  .mark { width: 30px; height: 23px; }
  .brand { gap: 10px; }
  .brand-name { font-size: 16px; }

  .nav { height: 72px; padding: 0 var(--rail); }
  .nav .brand { padding-left: 24px; }
  .burger, .menu { display: none !important; }
  .nav-links { display: flex; align-items: center; gap: 36px; font-size: 14px; }
  .nav-links a { color: var(--ink2); transition: color .15s; }
  .nav-links a:hover { color: var(--ink); }
  .nav-links a.first { color: var(--ink); }
  .nav-links a.first:hover { color: var(--blue); }
  .nav-demo { display: block; margin-right: 24px; font-size: 14px; font-weight: 500; color: var(--card); background: var(--blue); padding: 10px 16px; transition: background .15s; }
  .nav-demo:hover { background: var(--blue-d); color: var(--card); }

  .hero { padding: 120px calc(var(--rail) + 24px) 104px; }
  .announce { display: inline-flex; gap: 12px; padding: 5px 14px 5px 5px; font-size: 13.5px; }
  .announce-ic { width: 24px; height: 24px; }
  .announce-ic svg { height: 13px; }
  .announce-tx { flex: none; }
  .hero h1 { margin-top: 36px; max-width: 1120px; font-size: clamp(56px, 5.28vw, 76px); line-height: 1.02; letter-spacing: -0.034em; }
  .hero-row { margin-top: 48px; display: flex; justify-content: space-between; align-items: flex-end; gap: 48px; }
  .hero-sub { max-width: 560px; font-size: 20px; }
  .hero-ctas { margin-top: 0; flex-direction: row; gap: 12px; flex-shrink: 0; }
  .hero-ctas .btn-primary { height: auto; padding: 14px 22px; }
  .hero-ctas .btn-secondary { height: auto; padding: 13px 22px; }

  .prin-grid { margin: 0 var(--rail); grid-template-columns: repeat(4, minmax(0,1fr)); }
  .pr { padding: 36px 28px 40px; display: flex; flex-direction: column; gap: 14px; border-bottom: 0; border-right: 1px solid var(--line); }
  .pr:last-child { border-right: 0; }
  .pr-n { padding-top: 0; }
  .pr-t { font-size: 18px; letter-spacing: -0.2px; }
  .pr-d { font-size: 14.5px; line-height: 1.55; }

  .river { padding: 112px var(--rail) 120px; }
  .rv-label { padding: 0 24px; display: flex; justify-content: space-between; font: 500 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--mut); }
  .rv-intro { margin-top: 40px; padding: 0 24px; display: grid; grid-template-columns: 7fr 5fr; gap: 64px; align-items: end; }
  .rv-left { display: flex; flex-direction: column; gap: 28px; }
  .rv-right { display: flex; flex-direction: column; gap: 20px; padding-bottom: 6px; }
  .wordmark { width: 174px; height: 48px; }
  .rv-intro h2 { font-size: 44px; line-height: 1.08; letter-spacing: -1.3px; }
  .rv-intro p { font-size: 16px; line-height: 1.6; }
  .rv-stage { margin-top: 56px; }
  .rv-mwrap { max-width: none; }
  .caps { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .cap { padding: 28px 28px 32px; gap: 10px; border-bottom: 0; border-right: 1px solid var(--line); }
  .cap:last-child { border-right: 0; }
  .cap-k { font-size: 11px; }
  .cap-t { font-size: 17px; }
  .cap-d { font-size: 14.5px; line-height: 1.55; }

  .ind { padding: 112px var(--rail); }
  .ind-head { padding: 0 24px; display: grid; grid-template-columns: 7fr 5fr; gap: 64px; align-items: end; }
  .ind-head > div { display: flex; flex-direction: column; gap: 20px; }
  .ind-head h2 { margin-top: 0; font-size: 40px; line-height: 1.1; letter-spacing: -1.1px; }
  .ind-head p { display: block; font-size: 16px; line-height: 1.6; color: var(--ink2); text-wrap: pretty; }
  .ind-grid { margin-top: 48px; display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }
  .ind-card { min-height: 260px; padding: 28px; justify-content: space-between; gap: 32px; }
  .ind-top { display: flex; justify-content: space-between; align-items: center; }
  .ind-top .tag { font-size: 11px; padding: 3px 8px; gap: 7px; }
  .ind-top .tag .dot { width: 6px; height: 6px; }
  .ind-title { font-size: 22px; letter-spacing: -0.4px; }
  .ind-desc { font-size: 14.5px; line-height: 1.55; }

  .proof { padding: 96px var(--rail); }
  .proof-in { padding: 0 24px; display: grid; grid-template-columns: 3fr 9fr; gap: 64px; }
  .proof-l { display: flex; flex-direction: column; gap: 18px; padding-top: 10px; }
  .live { font-size: 11.5px; }
  .proof p { font-size: 48px; line-height: 1.12; letter-spacing: -1.4px; }

  .founder { padding: 112px var(--rail); }
  .fd { padding: 0 24px; display: grid; grid-template-columns: 4fr 1fr 7fr; gap: 0; align-items: start; }
  .portrait { aspect-ratio: 4/5; padding: 16px; }
  .portrait-lbl { font-size: 11px; }
  .fd-r { display: flex; flex-direction: column; gap: 28px; padding-top: 8px; }
  .fd-2 { margin-top: 96px; padding-top: 96px; }
  .fd-q { font-size: 28px; letter-spacing: -0.5px; }
  .fd-p { gap: 16px; font-size: 16px; line-height: 1.65; max-width: 600px; }
  .sig { padding-top: 20px; }
  .sig-n { font-size: 16px; }
  .sig-r { font-size: 12px; }

  .cta { padding: 96px calc(var(--rail) + 24px); }
  .cta-in { flex-direction: row; justify-content: space-between; align-items: flex-end; gap: 64px; }
  .cta-tx { display: flex; flex-direction: column; gap: 18px; max-width: 720px; }
  .cta h2 { font-size: 48px; line-height: 1.08; letter-spacing: -1.4px; }
  .cta p { font-size: 17px; }
  .cta-btns { margin-top: 0; flex-direction: row; gap: 12px; flex-shrink: 0; }
  .cta-btns .btn-primary { height: auto; padding: 14px 22px; }
  .cta-btns .btn-ghost { height: auto; padding: 13px 22px; }

  .foot { padding: 64px var(--rail) 36px; display: block; }
  .ft-grid { padding: 0 24px; display: grid; grid-template-columns: 6fr 2fr 2fr 2fr; gap: 32px; }
  .ft-cols { display: contents; }
  .ft-col { gap: 12px; }
  .ft-bot { margin: 56px 24px 0; padding-top: 20px; font-size: 11.5px; }
}

/* ---------- MOTION ---------- */
/* M1 page load: fade + rise 12px, 80ms stagger, 600ms */
@keyframes plRise12 { from { opacity: 0; translate: 0 12px; } to { opacity: 1; translate: 0 0; } }
.js .ld { opacity: 0; }
.js.loaded .ld { animation: plRise12 .6s var(--ease) both; animation-delay: calc(var(--i, 0) * 80ms); }
/* M2 scroll reveal: children fade + rise 16px in reading order, 70ms stagger, once; hairlines draw L→R 500ms */
.js .rv { opacity: 0; translate: 0 16px; transition: opacity .5s var(--ease), translate .5s var(--ease); transition-delay: calc(var(--i, 0) * 70ms); }
.js .in .rv { opacity: 1; translate: 0 0; }
.js [data-reveal].hl-t::before, .js [data-reveal].hl-b::after { transform: scaleX(0); transition: transform .5s var(--ease); }
.js [data-reveal].in.hl-t::before, .js [data-reveal].in.hl-b::after { transform: scaleX(1); }
@media (prefers-reduced-motion: reduce) {
  .js .ld, .js .rv { opacity: 1 !important; translate: none !important; animation: none !important; transition: none !important; }
  .js [data-reveal].hl-t::before, .js [data-reveal].hl-b::after { transform: none !important; transition: none !important; }
  .live-dot::after { animation: none; }
  .ind-card, .ind-card:hover { transform: none; }
}