:root {
  --text: #14152b;
  --muted: #5c5f7a;
  --accent: #5c66f2;
  --card: rgba(255, 255, 255, 0.62);
  --card-border: rgba(255, 255, 255, 0.85);
  --shadow: 0 10px 40px rgba(60, 70, 160, 0.12);
  --bg-1: #eef0ff;
  --bg-2: #e6ecff;
  --bg-3: #f3ecff;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #f2f3ff;
    --muted: #a7aacb;
    --accent: #8f97ff;
    --card: rgba(255, 255, 255, 0.07);
    --card-border: rgba(255, 255, 255, 0.12);
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
    --bg-1: #0b0d1f;
    --bg-2: #121638;
    --bg-3: #1b1235;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background:
    radial-gradient(60rem 40rem at 10% -10%, var(--bg-3), transparent 60%),
    radial-gradient(50rem 40rem at 100% 10%, var(--bg-2), transparent 55%),
    var(--bg-1);
  background-attachment: fixed;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }

header.site {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
}

header.site .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 19px;
  color: var(--text);
}

header.site .brand img { width: 32px; height: 32px; border-radius: 8px; }
header.site nav a { margin-left: 18px; color: var(--muted); font-weight: 500; }
header.site nav a[aria-current="page"] { color: var(--text); }

.glass {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 26px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
}

.hero { text-align: center; padding: 48px 0 28px; }
.hero img { width: 120px; height: 120px; border-radius: 27px; box-shadow: 0 18px 50px rgba(84, 94, 237, 0.4); }
.hero h1 { font-size: clamp(40px, 8vw, 58px); letter-spacing: -0.03em; margin: 22px 0 4px; }
.hero .tagline { font-size: clamp(19px, 3.5vw, 23px); color: var(--muted); margin: 0 auto; max-width: 30ch; }

.badge {
  display: inline-block;
  margin-top: 26px;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
}

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 36px 0; }
.feature { padding: 22px; }
.feature .emoji { font-size: 26px; }
.feature h3 { margin: 8px 0 4px; font-size: 17px; }
.feature p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.5; }

article.doc { padding: 34px clamp(22px, 5vw, 44px); margin: 18px 0 30px; }
article.doc h1 { font-size: clamp(30px, 6vw, 38px); letter-spacing: -0.02em; margin: 0 0 4px; }
article.doc .updated { color: var(--muted); margin: 0 0 26px; font-size: 15px; }
article.doc h2 { font-size: 21px; margin: 32px 0 8px; }
article.doc ul { padding-left: 1.2em; }
article.doc li { margin: 4px 0; }
article.doc .summary { padding: 16px 20px; border-radius: 18px; background: rgba(92, 102, 242, 0.1); }

details { border-top: 1px solid var(--card-border); padding: 14px 0; }
details summary { cursor: pointer; font-weight: 600; }
details p { color: var(--muted); margin: 8px 0 0; }

footer.site { text-align: center; color: var(--muted); font-size: 14px; padding: 10px 0 40px; }
footer.site a { color: var(--muted); margin: 0 8px; }