:root {
  --bg: #f7f8fc;
  --card: #ffffff;
  --text: #1b1f2a;
  --muted: #5b6273;
  --line: #e3e6ef;
  --navy: #141e3d;
  --orange: #f26a1b;
  --green: #2e9b53;
  --soft: #fff1e7;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1320;
    --card: #181d2c;
    --text: #e8eaf2;
    --muted: #a3aabb;
    --line: #2a3043;
    --soft: #2a1d14;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
a { color: var(--orange); }
header.brand { display: flex; align-items: center; gap: 14px; margin-bottom: 28px; }
header.brand img { width: 56px; height: 56px; border-radius: 16px; }
header.brand .name { font-size: 22px; font-weight: 700; }
header.brand .by { color: var(--muted); font-size: 14px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 6px; }
h2 { font-size: 19px; margin: 34px 0 8px; }
.muted { color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 18px 20px; }
.summary { background: var(--soft); border-color: transparent; }
.summary ul { margin: 6px 0 0; padding-left: 20px; }
.summary li::marker { color: var(--green); }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
footer { margin-top: 48px; color: var(--muted); font-size: 14px; }
.hero { text-align: center; padding-top: 24px; }
.hero img { width: 120px; height: 120px; border-radius: 30px; box-shadow: 0 12px 40px rgba(242, 106, 27, .25); }
.hero h1 { font-size: 40px; margin-top: 18px; }
.hero p { font-size: 18px; color: var(--muted); max-width: 520px; margin: 8px auto 24px; }
.button {
  display: inline-block; background: var(--navy); color: #fff; text-decoration: none;
  padding: 14px 24px; border-radius: 999px; font-weight: 600;
}
.features { display: grid; gap: 12px; margin-top: 36px; text-align: left; }
@media (min-width: 640px) { .features { grid-template-columns: repeat(3, 1fr); } }
.features .card h3 { margin: 0 0 4px; font-size: 16px; }
.features .card p { margin: 0; color: var(--muted); font-size: 15px; }