:root {
  --bg: #fbfbfd;
  --bg-2: #f2f3f7;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --faint: #a1a1a6;
  --accent: #2a5bd7;
  --glow-1: rgba(122, 140, 255, 0.28);
  --glow-2: rgba(255, 170, 205, 0.20);
  --glow-3: rgba(120, 210, 255, 0.18);
  --rule: rgba(0, 0, 0, 0.06);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --bg-2: #0b0b10;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --faint: #6e6e73;
    --accent: #7ea2ff;
    --glow-1: rgba(96, 112, 255, 0.30);
    --glow-2: rgba(214, 92, 160, 0.18);
    --glow-3: rgba(64, 170, 230, 0.16);
    --rule: rgba(255, 255, 255, 0.08);
  }
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%) fixed;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI Variable", "Segoe UI", system-ui, Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

.wrap {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding-inline: 24px;
}

/* Top bar */
.top {
  position: relative;
  z-index: 2;
}
.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.wordmark {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.top-link {
  font-size: 15px;
  color: var(--muted);
  transition: color 0.2s ease;
}
.top-link:hover, .top-link:focus-visible { color: var(--text); }

/* Hero */
.hero {
  position: relative;
  padding-block: clamp(96px, 18vh, 200px) clamp(80px, 14vh, 160px);
  text-align: center;
}
.hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: 50%;
  top: 46%;
  width: min(1100px, 140vw);
  height: min(720px, 110vw);
  transform: translate(-50%, -50%);
  background:
    radial-gradient(closest-side at 38% 45%, var(--glow-1), transparent 70%),
    radial-gradient(closest-side at 64% 40%, var(--glow-2), transparent 70%),
    radial-gradient(closest-side at 52% 66%, var(--glow-3), transparent 72%);
  filter: blur(40px);
  pointer-events: none;
}
.hero h1 {
  margin: 0 auto;
  max-width: 11ch;
  font-size: clamp(52px, 11vw, 128px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.045em;
}
.hero p {
  margin: 28px auto 0;
  max-width: 34ch;
  font-size: clamp(19px, 2.4vw, 26px);
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--muted);
}

/* Principles */
.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 56px;
  padding-block: 40px clamp(120px, 20vh, 200px);
}
.principles h2 {
  margin: 0 0 10px;
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.principles p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
}

/* Contact */
.contact {
  text-align: center;
  padding-block: 0 clamp(120px, 22vh, 220px);
}
.contact h2 {
  margin: 0 0 18px;
  font-size: clamp(40px, 7vw, 80px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
}
.contact a {
  display: inline-block;
  font-size: clamp(22px, 3.6vw, 38px);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--accent);
  overflow-wrap: anywhere;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0% 1.5px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size 0.4s ease;
}
.contact a:hover, .contact a:focus-visible { background-size: 100% 1.5px; }

/* Footer */
.foot {
  border-top: 1px solid var(--rule);
  font-size: 13px;
  color: var(--faint);
}
.foot .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  padding-top: 22px;
  padding-bottom: 32px;
}
.foot nav { display: flex; gap: 20px; }
.foot a { transition: color 0.2s ease; }
.foot a:hover, .foot a:focus-visible { color: var(--text); }

/* Simple pages (privacy, terms) */
.page {
  max-width: 680px;
  padding-block: clamp(64px, 12vh, 120px) clamp(96px, 16vh, 160px);
}
.page h1 {
  margin: 0 0 20px;
  font-size: clamp(40px, 7vw, 64px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
}
.page p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.6;
}
.page a { color: var(--accent); }
.page .back { display: inline-block; margin-top: 24px; font-size: 17px; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 4px;
}

/* Fade-and-rise. Only hidden when JS is running, so content is never lost. */
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 1s cubic-bezier(0.2, 0.7, 0.2, 1), transform 1s cubic-bezier(0.2, 0.7, 0.2, 1);
  transition-delay: var(--d, 0s);
}
.js .reveal.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal, .js .reveal.in { opacity: 1; transform: none; transition: none; }
  .contact a { transition: none; }
}

@media (max-width: 760px) {
  .wrap { padding-inline: 20px; }
  .top .wrap { height: 60px; }
  .principles {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-block-start: 8px;
    text-align: center;
  }
  .principles p { max-width: 32ch; margin: 0 auto; }
  .foot .wrap { justify-content: center; text-align: center; }
}