:root {
  --ink: #e6edf3;
  --muted: #9da9b8;
  --night: #0e1116;
  --surface: #161b22;
  --line: #30363d;
  --signal: #58d68d;
  --blue: #2f81f7;
}

* { box-sizing: border-box; }
html { background: var(--night); }
body {
  margin: 0;
  background: var(--night);
  color: var(--ink);
  font-family: "Space Grotesk", sans-serif;
}
a { color: inherit; text-decoration: none; }

.hero {
  position: relative;
  isolation: isolate;
  min-height: calc(100svh - 78px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #111820 url("https://images.unsplash.com/photo-1611974789855-9c2a0a7236a3?auto=format&fit=crop&w=2200&q=85") center / cover no-repeat;
}
.hero-shade {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(7, 11, 15, 0.72);
}
.landing-nav,
.hero-content,
.hero-footer,
.thesis,
.access-band,
footer {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}
.landing-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
}
.brand { font-size: 18px; font-weight: 700; letter-spacing: 0; }
.private-mark,
.eyebrow,
.section-label,
.principles span {
  font-family: "DM Mono", monospace;
  font-size: 11px;
  letter-spacing: 0;
  text-transform: uppercase;
}
.private-mark {
  border: 1px solid rgba(230, 237, 243, 0.42);
  padding: 7px 10px;
  color: var(--ink);
}
.hero-content {
  margin-block: auto;
  padding-block: 96px 52px;
  max-width: min(1180px, calc(100% - 48px));
}
.eyebrow { color: var(--signal); margin: 0 0 18px; }
h1,
h2,
h3,
p { margin-top: 0; }
h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(52px, 8vw, 112px);
  line-height: 0.94;
  font-weight: 600;
  letter-spacing: 0;
}
.hero-copy {
  max-width: 530px;
  margin-bottom: 30px;
  color: #d0d7de;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.48;
}
.hero-actions { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.signin {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  background: var(--blue);
  color: #fff;
  font-weight: 600;
}
.signin:hover { background: #58a6ff; }
.access-note { margin: 0; color: var(--muted); font-size: 13px; }
.hero-footer {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
  padding: 20px 0 24px;
  border-top: 1px solid rgba(230, 237, 243, 0.25);
  color: #d0d7de;
  font-family: "DM Mono", monospace;
  font-size: 11px;
}

.thesis {
  display: grid;
  grid-template-columns: minmax(150px, 0.45fr) 1fr;
  gap: 42px;
  padding-block: 104px;
}
.section-label { color: var(--signal); padding-top: 9px; }
.thesis-copy h2 { max-width: 690px; margin-bottom: 18px; font-size: clamp(34px, 5vw, 61px); line-height: 1; font-weight: 600; }
.thesis-copy > p { max-width: 610px; color: var(--muted); font-size: 17px; line-height: 1.6; }
.principles { grid-column: 2; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 28px; }
.principles article { border-top: 1px solid var(--line); padding-top: 16px; }
.principles span { color: var(--signal); }
.principles h3 { margin: 26px 0 10px; font-size: 18px; font-weight: 500; }
.principles p { color: var(--muted); font-size: 14px; line-height: 1.55; }
.access-band {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 22px;
  padding-block: 28px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.access-band p { margin: 0; color: var(--muted); }
.access-band a { color: var(--signal); font-weight: 600; }
footer { display: flex; justify-content: space-between; gap: 36px; padding-block: 24px 36px; color: var(--muted); font-size: 11px; line-height: 1.5; }
footer span { color: var(--ink); font-weight: 600; }
footer p { max-width: 620px; margin: 0; }

@media (max-width: 720px) {
  .landing-nav, .hero-content, .hero-footer, .thesis, .access-band, footer { width: min(100% - 32px, 1180px); }
  .hero { min-height: calc(100svh - 70px); background-position: 63% center; }
  .landing-nav { padding-top: 18px; }
  .hero-content { padding-block: 78px 38px; }
  h1 { font-size: clamp(46px, 15vw, 72px); }
  .hero-footer { gap: 12px 22px; }
  .thesis { display: block; padding-block: 72px; }
  .section-label { margin-bottom: 26px; }
  .principles { grid-template-columns: 1fr; margin-top: 42px; }
  .access-band, footer { align-items: flex-start; flex-direction: column; }
}