:root {
  --bg: #f5f5f7; --card: #ffffff; --text: #1d1d1f; --muted: #6e6e73; --line: #e3e3e8; --accent: #0a7aff;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #000000; --card: #1c1c1e; --text: #f5f5f7; --muted: #98989d; --line: #2c2c2e; --accent: #3b9bff; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 920px; margin: 0 auto; padding: 0 20px; }
header.nav { display: flex; align-items: center; justify-content: space-between; padding: 20px 0; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--text); }
.brand img { width: 32px; height: 32px; border-radius: 7px; }
.nav nav a { margin-left: 20px; color: var(--muted); font-size: 15px; }
.hero { text-align: center; padding: 48px 0 32px; }
.hero img.icon { width: 120px; height: 120px; border-radius: 27px; box-shadow: 0 12px 32px rgba(0,0,0,.16); }
.hero h1 { font-size: 44px; line-height: 1.1; margin: 24px 0 12px; letter-spacing: -.02em; }
.hero p { color: var(--muted); font-size: 20px; max-width: 560px; margin: 0 auto; }
.shots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding: 32px 0; }
.shots img { width: 100%; border-radius: 28px; border: 1px solid var(--line); display: block; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding: 16px 0 48px; }
.features div { background: var(--card); border-radius: 18px; padding: 20px; }
.features h3 { margin: 0 0 6px; font-size: 17px; }
.features p { margin: 0; color: var(--muted); font-size: 15px; }
article { background: var(--card); border-radius: 22px; padding: 32px; margin: 24px 0 48px; }
article h1 { font-size: 32px; margin: 0 0 4px; letter-spacing: -.01em; }
article h2 { font-size: 20px; margin: 28px 0 6px; }
article p, article li { color: var(--text); }
article .meta { color: var(--muted); font-size: 15px; }
footer { border-top: 1px solid var(--line); padding: 24px 0 48px; color: var(--muted); font-size: 14px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
footer a { color: var(--muted); margin-left: 16px; }
@media (max-width: 640px) {
  .hero h1 { font-size: 34px; }
  .hero p { font-size: 18px; }
  .shots { grid-template-columns: 1fr; max-width: 300px; margin: 0 auto; }
  .features { grid-template-columns: 1fr; }
  article { padding: 22px; }
}