:root {
  --bg: #08111f;
  --bg-accent: #0f1a2e;
  --surface: rgba(15, 23, 42, 0.72);
  --surface-strong: rgba(8, 17, 31, 0.88);
  --line: rgba(148, 163, 184, 0.18);
  --text: #edf2ff;
  --muted: #b7c2dc;
  --accent: #38bdf8;
  --accent-2: #f97316;
  --shadow: 0 24px 60px rgba(2, 8, 23, 0.28);
  --radius: 24px;
  --radius-sm: 18px;
  --wrap: min(1120px, calc(100% - 32px));
  --display: "Trebuchet MS", "Segoe UI", sans-serif;
  --body: "Verdana", "Geneva", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--body);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.16), transparent 34%),
    radial-gradient(circle at top right, rgba(249, 115, 22, 0.14), transparent 28%),
    linear-gradient(180deg, var(--bg) 0%, #050913 100%);
  line-height: 1.65;
}

body.theme-emerald {
  --bg: #08160f;
  --bg-accent: #112418;
  --surface: rgba(17, 36, 24, 0.74);
  --surface-strong: rgba(8, 22, 15, 0.9);
  --line: rgba(134, 239, 172, 0.16);
  --text: #effef3;
  --muted: #c4ebd0;
  --accent: #34d399;
  --accent-2: #facc15;
  --shadow: 0 24px 60px rgba(3, 12, 8, 0.32);
}

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

.wrap {
  width: var(--wrap);
  margin: 0 auto;
}

.site-header {
  position: relative;
  overflow: hidden;
  padding: 28px 0 48px;
}

.site-header::after {
  content: "";
  position: absolute;
  inset: auto -10% -120px auto;
  width: 280px;
  height: 280px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(249, 115, 22, 0.1));
  filter: blur(10px);
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.main-nav a {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.02);
}

.hero {
  margin-top: 48px;
  max-width: 760px;
}

.compact-header {
  padding-bottom: 32px;
}

.compact-hero {
  margin-top: 36px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--display);
  line-height: 1.1;
}

h1 {
  font-size: clamp(2.3rem, 6vw, 4.8rem);
  max-width: 12ch;
}

h2 {
  font-size: clamp(1.7rem, 3vw, 2.7rem);
  margin-bottom: 14px;
}

h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

p {
  margin: 0;
}

.hero-copy,
.section-head p,
.panel p,
.article-card p {
  color: var(--muted);
}

.hero-copy {
  margin-top: 18px;
  font-size: 1.05rem;
  max-width: 62ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 18px;
  border-radius: 999px;
  font-weight: 700;
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06111f;
}

.button-secondary {
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}

.section {
  padding: 22px 0 42px;
}

.section-grid {
  padding-top: 8px;
}

.section-head {
  max-width: 760px;
  margin-bottom: 26px;
}

.card-grid,
.article-stack {
  display: grid;
  gap: 18px;
}

.card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.panel,
.article-card,
.stat-panel,
.checklist {
  border: 1px solid var(--line);
  background: var(--surface);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card,
.panel,
.article-card {
  padding: 24px;
}

.card p,
.stat-item span,
.check-item {
  color: var(--muted);
}

.feature-band {
  padding: 18px 0 32px;
}

.soft-band {
  padding-top: 6px;
}

.feature-layout,
.checklist-layout,
.split,
.footer-layout {
  display: grid;
  gap: 18px;
}

.feature-layout {
  grid-template-columns: 1.25fr 0.75fr;
  align-items: stretch;
}

.stat-panel {
  padding: 20px;
  display: grid;
  gap: 14px;
}

.stat-item {
  padding: 16px;
  border-radius: var(--radius-sm);
  background: var(--surface-strong);
  border: 1px solid var(--line);
}

.stat-item strong {
  display: block;
  font-size: 1.8rem;
  font-family: var(--display);
  margin-bottom: 4px;
  color: var(--accent-2);
}

.split {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.article-stack {
  grid-template-columns: 1fr;
}

.checklist-layout {
  grid-template-columns: 0.9fr 1.1fr;
  align-items: start;
}

.checklist {
  padding: 22px;
  display: grid;
  gap: 12px;
}

.check-item {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-strong);
}

.site-footer {
  padding: 22px 0 34px;
}

.footer-layout {
  grid-template-columns: 1fr auto;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.footer-layout p {
  color: var(--muted);
  margin-top: 8px;
  max-width: 60ch;
}

.footer-links {
  display: flex;
  gap: 14px;
  color: var(--muted);
}

@media (max-width: 920px) {
  .card-grid,
  .feature-layout,
  .split,
  .checklist-layout,
  .footer-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding-top: 20px;
  }

  .brand-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    margin-top: 34px;
  }

  .card,
  .panel,
  .article-card,
  .stat-panel,
  .checklist {
    padding: 18px;
  }

  .button,
  .main-nav a {
    width: 100%;
  }
}