:root {
  color-scheme: light dark;
  --loop-bg: #f5f6f8;
  --loop-surface: rgba(255, 255, 255, 0.82);
  --loop-text: #111318;
  --loop-muted: #626873;
  --loop-line: rgba(17, 19, 24, 0.1);
  --loop-accent: #16233f;
  --loop-accent-soft: #e8edf7;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.loop-page {
  margin: 0;
  color: var(--loop-text);
  background:
    radial-gradient(circle at 50% -20%, #dbe4f6 0, transparent 42rem),
    var(--loop-bg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "Helvetica Neue", sans-serif;
  line-height: 1.65;
}

.loop-shell {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 64px;
}

.loop-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 52px;
  margin-bottom: 48px;
}

.loop-brand,
.loop-nav-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

.loop-brand {
  color: var(--loop-text);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.loop-brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
}

.loop-nav a {
  color: var(--loop-muted);
  font-size: 0.92rem;
  text-decoration: none;
}

.loop-nav a:hover,
.loop-nav a:focus-visible {
  color: var(--loop-text);
}

.loop-hero {
  padding: 48px 0 56px;
}

.loop-eyebrow {
  margin: 0 0 12px;
  color: var(--loop-muted);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.loop-hero h1,
.loop-document h1 {
  margin: 0;
  max-width: 720px;
  font-size: clamp(2.8rem, 9vw, 5.5rem);
  line-height: 0.98;
  letter-spacing: -0.065em;
}

.loop-document h1 {
  font-size: clamp(2.5rem, 7vw, 4.4rem);
}

.loop-lead {
  max-width: 610px;
  margin: 28px 0 0;
  color: var(--loop-muted);
  font-size: clamp(1.08rem, 3vw, 1.3rem);
}

.loop-actions,
.loop-grid {
  display: grid;
  gap: 14px;
}

.loop-actions {
  grid-template-columns: repeat(3, 1fr);
  margin-top: 36px;
}

.loop-card,
.loop-document section,
.loop-support-card {
  border: 1px solid var(--loop-line);
  border-radius: 24px;
  background: var(--loop-surface);
  box-shadow: 0 18px 60px rgba(22, 35, 63, 0.07);
  backdrop-filter: blur(18px);
}

.loop-card {
  min-height: 150px;
  padding: 22px;
  color: var(--loop-text);
  text-decoration: none;
}

.loop-card span {
  display: block;
  margin-bottom: 28px;
  color: var(--loop-muted);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.loop-card strong {
  display: block;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.loop-card:hover,
.loop-card:focus-visible {
  border-color: rgba(22, 35, 63, 0.28);
  transform: translateY(-2px);
}

.loop-document header {
  margin-bottom: 40px;
}

.loop-updated {
  margin-top: 18px;
  color: var(--loop-muted);
}

.loop-document section,
.loop-support-card {
  margin: 14px 0;
  padding: clamp(24px, 5vw, 40px);
}

.loop-document h2 {
  margin: 0 0 16px;
  color: var(--loop-text);
  font-size: 1.45rem;
  letter-spacing: -0.03em;
}

.loop-document h3 {
  margin: 26px 0 10px;
  color: var(--loop-text);
  font-size: 1.05rem;
}

.loop-document p,
.loop-document li,
.loop-support-card p {
  color: var(--loop-muted);
}

.loop-document strong {
  color: var(--loop-text);
}

.loop-document a,
.loop-support-card a {
  color: #315fae;
}

.loop-document ul {
  padding-left: 1.3rem;
}

.loop-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 40px;
  padding: 24px 4px 0;
  border-top: 1px solid var(--loop-line);
  color: var(--loop-muted);
  font-size: 0.88rem;
}

.loop-footer a {
  color: inherit;
}

@media (prefers-color-scheme: dark) {
  :root {
    --loop-bg: #090b10;
    --loop-surface: rgba(21, 24, 31, 0.82);
    --loop-text: #f5f7fb;
    --loop-muted: #a7adb8;
    --loop-line: rgba(255, 255, 255, 0.1);
    --loop-accent: #dce6fb;
    --loop-accent-soft: #151b28;
  }

  body.loop-page {
    background:
      radial-gradient(circle at 50% -20%, #18243f 0, transparent 42rem),
      var(--loop-bg);
  }

  .loop-document a,
  .loop-support-card a {
    color: #9fc1ff;
  }
}

@media (max-width: 680px) {
  .loop-shell {
    width: min(100% - 24px, 760px);
  }

  .loop-nav {
    align-items: flex-start;
    margin-bottom: 28px;
  }

  .loop-nav-links {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px 12px;
  }

  .loop-hero {
    padding-top: 30px;
  }

  .loop-actions {
    grid-template-columns: 1fr;
  }

  .loop-card {
    min-height: auto;
  }

  .loop-footer {
    flex-direction: column;
  }
}