:root {
  --bg: #090b11;
  --bg-soft: #121520;
  --card: rgba(22, 27, 41, 0.75);
  --border: rgba(255, 255, 255, 0.08);
  --text: #f1f5f9;
  --text-soft: #94a3b8;
  --accent: #6366f1;
  --accent-2: #a855f7;
  --link: #8b9cff;
  --radius: 16px;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f8fafc;
    --bg-soft: #eef2f7;
    --card: #ffffff;
    --border: rgba(15, 23, 42, 0.1);
    --text: #0f172a;
    --text-soft: #475569;
    --accent: #4f46e5;
    --accent-2: #9333ea;
    --link: #4338ca;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--link); }

.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
}

header.top {
  border-bottom: 1px solid var(--border);
}

header.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
  white-space: nowrap;
  flex-shrink: 0;
}

.brand img { width: 32px; height: 32px; border-radius: 8px; }

nav.links { display: flex; gap: 18px; flex-wrap: wrap; }
nav.links a { color: var(--text-soft); text-decoration: none; font-size: 15px; white-space: nowrap; }
nav.links a:hover { color: var(--text); }

.hero { padding: 64px 0 32px; text-align: center; }
.hero h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.15; margin: 0 0 18px; letter-spacing: -0.02em; }
.hero p.lead { font-size: 18px; color: var(--text-soft); max-width: 720px; margin: 0 auto 28px; }

.buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 12px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--card);
}

.btn.primary {
  border: 0;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.hint { color: var(--text-soft); font-size: 14px; margin-top: 12px; }

.shot { margin: 40px auto 0; }
.shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

section.block { padding: 48px 0; }
section.block h2 { font-size: 26px; margin: 0 0 20px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0; color: var(--text-soft); font-size: 15px; }

.privacy-note { background: var(--bg-soft); }

@media (max-width: 560px) {
  header.top .wrap { flex-wrap: wrap; padding-top: 12px; padding-bottom: 12px; row-gap: 8px; }
  nav.links { gap: 16px; }
  .hero { padding-top: 40px; }
}

footer {
  border-top: 1px solid var(--border);
  padding: 28px 0 40px;
  color: var(--text-soft);
  font-size: 14px;
}

footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

article.doc { max-width: 760px; margin: 0 auto; padding: 40px 20px 56px; }
article.doc h1 { font-size: 34px; margin: 0 0 6px; }
article.doc h2 { font-size: 21px; margin: 34px 0 10px; }
article.doc .meta { color: var(--text-soft); margin: 0 0 24px; }
article.doc ul { padding-left: 22px; }
article.doc li { margin: 6px 0; }
article.doc code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1px 6px;
  overflow-wrap: anywhere;
}