:root {
  --bg: #f4f7fc;
  --card: #ffffff;
  --text: #0b1f3a;
  --muted: #526580;
  --line: rgba(11, 31, 58, 0.1);
  --blue: #007aff;
  --grad: linear-gradient(135deg, #1f8bff 0%, #46cdea 100%);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #07101f;
    --card: #101c30;
    --text: #eaf2ff;
    --muted: #9fb2cf;
    --line: rgba(255, 255, 255, 0.1);
    --blue: #3d9bff;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI Variable Display', 'Segoe UI', system-ui, sans-serif;
  background: radial-gradient(120% 50% at 50% -10%, rgba(10, 132, 255, 0.16), transparent 60%), var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: var(--blue); }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 22px; }

header.top { display: flex; align-items: center; justify-content: space-between; padding: 22px 0; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; font-size: 20px; letter-spacing: -0.5px; color: var(--text); }
.brand img { width: 34px; height: 34px; }
nav a { margin-inline-start: 18px; text-decoration: none; color: var(--muted); font-weight: 600; font-size: 15px; }
nav a:hover { color: var(--blue); }

.hero { text-align: center; padding: 38px 0 20px; }
.hero h1 { font-size: clamp(34px, 6vw, 56px); line-height: 1.08; letter-spacing: -1.6px; margin: 0 0 16px; font-weight: 800; }
.hero h1 span { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { font-size: 20px; color: var(--muted); max-width: 640px; margin: 0 auto 26px; }
.btn {
  display: inline-block; padding: 14px 28px; border-radius: 999px; background: var(--grad); color: #fff;
  font-weight: 700; text-decoration: none; box-shadow: 0 10px 26px rgba(0, 122, 255, 0.35);
}
.btn.ghost { background: transparent; color: var(--blue); box-shadow: inset 0 0 0 2px var(--blue); margin-inline-start: 10px; }

.shot { margin: 34px auto 10px; border-radius: 18px; overflow: hidden; box-shadow: 0 30px 70px rgba(0, 70, 160, 0.25), 0 0 0 1px var(--line); }
.shot img { display: block; width: 100%; height: auto; }

section { padding: 34px 0; }
h2 { font-size: 30px; letter-spacing: -0.8px; margin: 0 0 14px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card { background: var(--card); border-radius: 18px; padding: 20px 22px; box-shadow: 0 1px 2px rgba(10, 40, 90, 0.05), 0 10px 28px rgba(10, 60, 140, 0.07); }
.card h3 { margin: 0 0 6px; font-size: 18px; letter-spacing: -0.3px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.shots { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.shots img { width: 100%; height: auto; border-radius: 14px; box-shadow: 0 14px 34px rgba(0, 70, 160, 0.2), 0 0 0 1px var(--line); }

.doc { padding: 20px 0 50px; max-width: 760px; }
.doc h1 { font-size: 40px; letter-spacing: -1.2px; margin: 10px 0 6px; }
.doc h2 { font-size: 22px; margin-top: 34px; }
.doc .meta { color: var(--muted); margin-bottom: 20px; }
.doc li { margin: 6px 0; }
details { background: var(--card); border-radius: 14px; padding: 14px 18px; margin: 10px 0; box-shadow: 0 1px 2px rgba(10, 40, 90, 0.05); }
summary { cursor: pointer; font-weight: 700; }
details p { color: var(--muted); margin: 10px 0 2px; }

footer { border-top: 1px solid var(--line); margin-top: 30px; padding: 26px 0 40px; color: var(--muted); font-size: 14px; text-align: center; }
footer a { margin: 0 8px; }