:root {
  --sky: #0b1026; --sky-deep: #05070f; --panel: rgba(255,255,255,0.05); --line: rgba(255,255,255,0.12);
  --text: #f3f4fb; --muted: #b7bdd6; --link: #7dd3fc; --accent: #50d8b5; --accent-2: #c084fc;
}
* { box-sizing: border-box; }
html { background: var(--sky-deep); }
body {
  margin: 0; color: var(--text); -webkit-font-smoothing: antialiased;
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(circle at 18% 12%, rgba(108,155,255,0.18), transparent 34%),
    radial-gradient(circle at 82% 8%, rgba(192,132,252,0.16), transparent 30%),
    radial-gradient(circle at 50% 100%, rgba(80,216,181,0.10), transparent 40%),
    linear-gradient(180deg, var(--sky) 0%, var(--sky-deep) 100%) fixed;
  min-height: 100vh;
}
a { color: var(--link); }
.langs { max-width: 1040px; margin: 0 auto; padding: 18px 24px 0; text-align: right; font-size: 15px; }
.langs a, .langs span { margin-left: 14px; }
.langs span { color: var(--muted); }
.doc { max-width: 720px; margin: 0 auto; padding: 24px 24px 56px; }
.doc h1 { font-size: 34px; line-height: 1.2; margin: 20px 0 6px; }
.doc h2 { font-size: 21px; margin: 34px 0 8px; }
.doc .meta { color: var(--muted); margin: 0 0 18px; }
.doc ul { padding-left: 1.2em; }
.doc li { margin: 6px 0; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; font-weight: 700; }
.brand img { width: 44px; height: 44px; border-radius: 11px; }
.footer { color: var(--muted); font-size: 15px; margin-top: 44px; padding-top: 18px; border-top: 1px solid var(--line); }
.footer a { color: var(--muted); }
.hero { text-align: center; padding: 48px 24px 28px; }
.hero .icon { width: 120px; height: 120px; border-radius: 28px; box-shadow: 0 22px 60px rgba(0,0,0,0.55), 0 0 0 1px var(--line); }
.hero h1 {
  font-size: clamp(42px, 8vw, 68px); letter-spacing: -0.02em; margin: 26px 0 8px; line-height: 1.05;
  background: linear-gradient(90deg, #f9a8d4, #c084fc 55%, #7dd3fc); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .tagline { font-size: clamp(19px, 2.6vw, 23px); color: var(--muted); max-width: 640px; margin: 0 auto 30px; }
.cta {
  display: inline-block; padding: 15px 30px; border-radius: 999px; font-weight: 700; font-size: 18px; text-decoration: none;
  color: #06121a; background: linear-gradient(90deg, var(--accent), #7dd3fc); box-shadow: 0 10px 30px rgba(80,216,181,0.3);
}
.cta:focus-visible, a:focus-visible { outline: 3px solid var(--link); outline-offset: 3px; }
.note { color: var(--muted); font-size: 15px; margin-top: 14px; }
.grid { max-width: 1040px; margin: 20px auto 0; padding: 0 24px; display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: 20px 22px; }
.card .emoji { font-size: 30px; line-height: 1; }
.card h2 { font-size: 19px; margin: 12px 0 6px; }
.card p { margin: 0; color: var(--muted); }
.page-footer { max-width: 1040px; margin: 44px auto 0; padding: 18px 24px 48px; color: var(--muted); font-size: 15px; text-align: center; border-top: 1px solid var(--line); }
.page-footer a { color: var(--muted); margin: 0 8px; }