:root {
  --navy: #14213D;
  --coral: #D93A31;
  --bg: #F6F7FB;
  --card: #FFFFFF;
  --ink: #14213D;
  --sub: #5B6478;
  --line: #E6E8F0;
  --soft: #FFE4E1;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B1220;
    --card: #16203A;
    --ink: #F2F4F8;
    --sub: #A3ACBF;
    --line: #26324C;
    --soft: #3A1E24;
    --coral: #FF5A4E;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: ui-rounded, "SF Pro Rounded", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--coral); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header.top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 0;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 800; font-size: 20px; }
.brand img { width: 36px; height: 36px; border-radius: 9px; }
nav a { color: var(--sub); text-decoration: none; margin-left: 16px; font-weight: 600; font-size: 15px; }
nav a:hover { color: var(--coral); }
.hero { text-align: center; padding: 48px 0 32px; }
.hero img { width: 120px; height: 120px; border-radius: 28px; box-shadow: 0 16px 40px rgba(20, 33, 61, 0.25); }
.hero h1 { font-size: 40px; line-height: 1.15; margin: 24px 0 8px; letter-spacing: -0.02em; }
.hero p { color: var(--sub); font-size: 19px; margin: 0 auto; max-width: 520px; }
.button {
  display: inline-block; margin-top: 24px; padding: 14px 26px; border-radius: 16px;
  background: var(--coral); color: #fff; text-decoration: none; font-weight: 800;
}
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; margin: 24px 0 48px; }
.card { background: var(--card); border-radius: 20px; padding: 20px; box-shadow: 0 8px 24px rgba(20, 33, 61, 0.06); }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--sub); font-size: 15px; }
article { background: var(--card); border-radius: 24px; padding: 28px; margin: 12px 0 40px; box-shadow: 0 8px 24px rgba(20, 33, 61, 0.06); }
article h1 { margin-top: 0; font-size: 30px; letter-spacing: -0.01em; }
article h2 { font-size: 20px; margin-top: 28px; }
article .meta { color: var(--sub); font-size: 14px; }
article li { margin: 4px 0; }
footer { border-top: 1px solid var(--line); padding: 20px 0 40px; color: var(--sub); font-size: 14px; }
footer a { color: var(--sub); margin-right: 14px; }
@media (max-width: 520px) {
  .hero h1 { font-size: 32px; }
  nav a { margin-left: 10px; }
  article { padding: 20px; }
}