:root {
  color-scheme: light;
  --bg: #f7f7f8;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: #ffffff;
  --text: #0f1014;
  --muted: #686a73;
  --soft: #8c8e96;
  --line: rgba(15, 16, 20, 0.1);
  --shadow: 0 24px 70px rgba(16, 20, 32, 0.08);
  --green: #22b55f;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.96), rgba(247, 247, 248, 0.7) 34%, rgba(247, 247, 248, 1) 72%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Arial, sans-serif;
  letter-spacing: 0;
}

.site-header {
  width: min(1120px, calc(100% - 40px));
  height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-size: 16px;
  font-weight: 650;
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}

.nav a {
  transition: color 180ms ease;
}

.nav a:hover {
  color: var(--text);
}

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  align-items: center;
  padding: 36px 20px 72px;
}

.hero-inner {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 24px;
  color: var(--soft);
  font-size: 14px;
  font-weight: 650;
}

h1 {
  margin: 0;
  max-width: 920px;
  font-size: clamp(54px, 9vw, 116px);
  line-height: 0.96;
  letter-spacing: 0;
  font-weight: 680;
}

.hero-copy {
  margin: 34px 0 0;
  max-width: 620px;
  color: var(--muted);
  font-size: clamp(19px, 2.2vw, 25px);
  line-height: 1.5;
}

.hero-actions {
  margin-top: 42px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 10px 30px rgba(16, 20, 32, 0.05);
  font-size: 14px;
  font-weight: 650;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 6px rgba(34, 181, 95, 0.12);
}

.principles {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 0 0 96px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.principle-card {
  min-height: 224px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.principle-card:hover {
  transform: translateY(-3px);
  border-color: rgba(15, 16, 20, 0.18);
  background: var(--surface-strong);
}

.card-index {
  color: var(--soft);
  font-size: 13px;
  font-weight: 700;
}

.principle-card h2 {
  margin: 46px 0 12px;
  font-size: 24px;
  line-height: 1.12;
  letter-spacing: 0;
}

.principle-card p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
}

.site-footer {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 42px;
  border-top: 1px solid var(--line);
  color: var(--soft);
  font-size: 13px;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 780px) {
  .site-header {
    width: min(100% - 32px, 1120px);
    height: auto;
    padding: 22px 0;
    align-items: flex-start;
    gap: 16px;
  }

  .nav {
    gap: 14px;
    flex-wrap: wrap;
    justify-content: flex-end;
    font-size: 13px;
  }

  .hero {
    min-height: auto;
    padding: 78px 16px 72px;
  }

  h1 {
    font-size: clamp(46px, 14vw, 72px);
  }

  .principles {
    width: min(100% - 32px, 1120px);
    grid-template-columns: 1fr;
    padding-bottom: 72px;
  }

  .principle-card {
    min-height: 180px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}