:root {
  color-scheme: dark;
  --background: #0b0e13;
  --surface: #151c22;
  --surface-strong: #1b272d;
  --text: #f7fbfb;
  --muted: #b4c1c2;
  --accent: #38c7b3;
  --accent-secondary: #8573f2;
  --border: rgba(255, 255, 255, 0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 5%, rgba(56, 199, 179, 0.16), transparent 36rem),
    linear-gradient(145deg, #111a20, var(--background) 58%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

main {
  width: min(760px, calc(100% - 36px));
  margin: 0 auto;
  padding: 56px 0 80px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
}

.brand-icon {
  display: block;
  width: 38px;
  height: 38px;
  border-radius: 9px;
  box-shadow: 0 5px 16px rgba(0, 0, 0, 0.32);
}

h1 {
  margin: 52px 0 12px;
  font-size: clamp(2.25rem, 7vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

h2 { margin-top: 34px; line-height: 1.2; }
h3 { margin-top: 24px; }
p, li { color: var(--muted); }
a { color: var(--accent); }

.lede {
  max-width: 650px;
  font-size: 1.15rem;
}

.card {
  margin-top: 28px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(255,255,255,0.08), rgba(255,255,255,0.035));
  box-shadow: 0 18px 44px rgba(0,0,0,0.24);
}

.links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.links a {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--text);
  background: var(--surface);
  font-weight: 650;
  text-decoration: none;
}

.links a:hover { border-color: rgba(56, 199, 179, 0.55); }

.meta { color: #8fa0a2; font-size: 0.9rem; }
.notice { border-left: 3px solid var(--accent-secondary); padding-left: 16px; }

footer {
  margin-top: 54px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: #8fa0a2;
  font-size: 0.9rem;
}