@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Manrope:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  --ink: #09131f;
  --ink-soft: #102231;
  --paper: #eef4f2;
  --paper-muted: #c4d3d2;
  --text: #f3f8f7;
  --muted: #a4b8ba;
  --line: rgba(213, 237, 235, .16);
  --cyan: #65eee0;
  --violet: #9a8bff;
  --orange: #ffb977;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--ink);
  font-family: Manrope, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .18;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.28'/%3E%3C/svg%3E");
}

a { color: inherit; }
a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 5px; }
.shell { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
.mono { font-family: "DM Mono", ui-monospace, monospace; }
.eyebrow { color: var(--cyan); font: 500 .72rem/1.2 "DM Mono", monospace; letter-spacing: .13em; text-transform: uppercase; }

header.site-header { padding: 28px 0; border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font: 700 1rem "Space Grotesk", sans-serif; letter-spacing: -.02em; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 27px; height: 27px; border: 1px solid var(--cyan); border-radius: 50%; color: var(--cyan); font: 500 .72rem "DM Mono", monospace; }
.nav-links { display: flex; gap: 25px; color: var(--muted); font-size: .82rem; }
.nav-links a { text-decoration: none; transition: color .2s ease; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); }

.hero { position: relative; padding: 118px 0 105px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.03fr) minmax(290px, .7fr); gap: 80px; align-items: center; }
.hero h1 { max-width: 760px; margin: 18px 0 25px; font: 600 clamp(3.2rem, 7vw, 6.6rem)/.95 "Space Grotesk", sans-serif; letter-spacing: -.075em; }
.hero h1 em { color: var(--cyan); font-style: normal; }
.hero-lede { max-width: 570px; margin: 0; color: var(--paper-muted); font-size: 1.08rem; }
.hero-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { display: inline-flex; align-items: center; gap: 10px; padding: 12px 17px; border: 1px solid var(--line); border-radius: 4px; color: var(--text); font-size: .82rem; font-weight: 700; text-decoration: none; }
.button.primary { border-color: var(--cyan); color: var(--ink); background: var(--cyan); }
.button:hover { transform: translateY(-1px); }

.pulse-card { position: relative; min-height: 300px; padding: 30px; border: 1px solid var(--line); background: linear-gradient(140deg, rgba(101,238,224,.10), rgba(154,139,255,.08)); }
.pulse-card::before { content: ""; position: absolute; top: 0; bottom: 0; left: 49px; width: 1px; background: linear-gradient(var(--cyan), transparent 86%); }
.pulse-card-label { position: relative; margin: 0 0 88px 41px; color: var(--muted); font: .68rem "DM Mono", monospace; letter-spacing: .08em; text-transform: uppercase; }
.pulse-line { position: relative; height: 78px; margin-left: 41px; border-bottom: 1px solid var(--line); }
.pulse-line svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.pulse-line path { fill: none; stroke: var(--cyan); stroke-width: 2; stroke-linecap: round; filter: drop-shadow(0 0 7px rgba(101,238,224,.55)); }
.pulse-legend { display: flex; justify-content: space-between; margin: 17px 0 0 41px; color: var(--muted); font: .68rem "DM Mono", monospace; }
.pulse-legend strong { color: var(--text); font-weight: 500; }

.section { padding: 83px 0; border-top: 1px solid var(--line); }
.section-intro { display: flex; justify-content: space-between; gap: 35px; align-items: end; margin-bottom: 38px; }
.section h2 { max-width: 590px; margin: 12px 0 0; font: 600 clamp(2rem, 4vw, 3.3rem)/1.03 "Space Grotesk", sans-serif; letter-spacing: -.06em; }
.section-intro p { max-width: 340px; margin: 0; color: var(--muted); font-size: .92rem; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.card { min-height: 230px; padding: 25px; background: var(--ink); }
.card .card-index { color: var(--violet); font: .7rem "DM Mono", monospace; }
.card h3 { margin: 57px 0 9px; font: 600 1.25rem "Space Grotesk", sans-serif; }
.card p { margin: 0; color: var(--muted); font-size: .86rem; }

.quote { padding: 52px 0; color: var(--paper); background: var(--cyan); }
.quote p { max-width: 820px; margin: 0; color: var(--ink); font: 600 clamp(1.6rem, 3vw, 2.55rem)/1.12 "Space Grotesk", sans-serif; letter-spacing: -.05em; }
.quote .mono { display: block; margin-top: 20px; color: rgba(9,19,31,.65); font-size: .68rem; letter-spacing: .08em; }

.page-hero { padding: 85px 0 65px; border-bottom: 1px solid var(--line); }
.page-hero h1 { max-width: 800px; margin: 17px 0 18px; font: 600 clamp(2.8rem, 6vw, 5.4rem)/.96 "Space Grotesk", sans-serif; letter-spacing: -.075em; }
.page-hero p { max-width: 610px; margin: 0; color: var(--paper-muted); font-size: 1.02rem; }
.meta { margin-top: 20px; color: var(--muted); font: .72rem "DM Mono", monospace; }

.doc-layout { display: grid; grid-template-columns: 210px minmax(0, 690px); gap: 75px; padding: 70px 0 110px; }
.doc-nav { position: sticky; top: 25px; align-self: start; color: var(--muted); font: .72rem/1.4 "DM Mono", monospace; }
.doc-nav a { display: block; padding: 6px 0; text-decoration: none; }
.doc-nav a:hover { color: var(--cyan); }
.doc h2 { margin: 48px 0 12px; padding-top: 12px; border-top: 1px solid var(--line); font: 600 1.45rem "Space Grotesk", sans-serif; letter-spacing: -.03em; }
.doc h2:first-child { margin-top: 0; border-top: 0; }
.doc h3 { margin: 28px 0 8px; font-size: 1rem; }
.doc p, .doc li { color: var(--paper-muted); font-size: .94rem; }
.doc ul { padding-left: 21px; }
.doc li + li { margin-top: 6px; }
.doc strong { color: var(--text); }
.notice { margin: 0 0 30px; padding: 17px 19px; border-left: 2px solid var(--orange); background: rgba(255,185,119,.08); color: var(--paper-muted); font-size: .88rem; }

.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { display: flex; justify-content: space-between; gap: 24px; padding: 22px 0; cursor: pointer; list-style: none; font: 600 1.04rem "Space Grotesk", sans-serif; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--cyan); font: 1.4rem "DM Mono", monospace; }
details[open] summary::after { content: "−"; }
details p { max-width: 680px; margin: -5px 0 22px; color: var(--muted); font-size: .92rem; }
.contact-box { margin-top: 54px; padding: 25px; border: 1px solid var(--cyan); background: rgba(101,238,224,.06); }
.contact-box h3 { margin: 0 0 7px; font: 600 1.25rem "Space Grotesk", sans-serif; }
.contact-box p { margin: 0; color: var(--paper-muted); font-size: .9rem; }
.contact-box a { color: var(--cyan); font-weight: 700; }

footer { padding: 28px 0 35px; border-top: 1px solid var(--line); color: var(--muted); font-size: .76rem; }
.footer-row { display: flex; justify-content: space-between; gap: 25px; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: var(--cyan); }

@media (max-width: 760px) {
  .shell { width: min(100% - 34px, var(--max)); }
  .nav-links { gap: 14px; font-size: .75rem; }
  .hero { padding: 76px 0 72px; }
  .hero-grid { grid-template-columns: 1fr; gap: 55px; }
  .hero h1 { font-size: clamp(3.1rem, 16vw, 5.3rem); }
  .section-intro { display: block; }
  .section-intro p { margin-top: 17px; }
  .cards { grid-template-columns: 1fr; }
  .card { min-height: auto; }
  .card h3 { margin-top: 35px; }
  .doc-layout { display: block; padding-top: 45px; }
  .doc-nav { position: static; display: flex; gap: 15px; overflow: auto; margin-bottom: 50px; padding-bottom: 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
  .doc-nav a { padding: 0; }
  .footer-row { display: block; }
  .footer-links { margin-top: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}