:root {
  --navy: #1e4e79; --navy-deep: #12304d; --gold: #f2c255; --ink: #1d1d1f; --muted: #5f6b7a;
  --bg: #ffffff; --panel: #f4f6f9; --line: #e3e7ee;
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #f2f4f7; --muted: #a7b1bf; --bg: #0f1722; --panel: #172232; --line: #26344a; --navy: #78aad9; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif;
       color: var(--ink); background: var(--bg); }
a { color: var(--navy); }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 22px; }
header.site { border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: var(--ink); text-decoration: none; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
nav a { margin-left: 18px; color: var(--muted); text-decoration: none; font-size: 15px; }
nav a:hover, nav a[aria-current="page"] { color: var(--ink); }
.hero { padding: 72px 0 48px; text-align: center; }
.hero img { width: 112px; height: 112px; border-radius: 26px; box-shadow: 0 10px 30px rgba(18, 48, 77, .25); }
.hero h1 { font-size: clamp(32px, 6vw, 48px); line-height: 1.1; margin: 24px 0 12px; letter-spacing: -0.02em; }
.hero p { font-size: 20px; color: var(--muted); max-width: 620px; margin: 0 auto; }
.badge { display: inline-block; margin-top: 28px; padding: 12px 22px; border-radius: 12px; background: var(--navy-deep);
         color: #fff; font-weight: 600; text-decoration: none; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 24px 0 56px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; }
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.pricing { text-align: center; margin-bottom: 64px; }
.pricing .plans { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 16px; }
.pricing .plan { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 14px 22px; min-width: 170px; }
.pricing .plan strong { display: block; font-size: 22px; }
.pricing .plan span { color: var(--muted); font-size: 14px; }
main.doc { padding: 40px 0 64px; }
main.doc h1 { font-size: 34px; letter-spacing: -0.01em; margin-bottom: 4px; }
main.doc h2 { font-size: 21px; margin-top: 32px; }
.meta { color: var(--muted); font-size: 15px; margin-top: 0; }
details { border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; margin: 10px 0; background: var(--panel); }
summary { font-weight: 600; cursor: pointer; }
footer.site { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
footer.site a { color: var(--muted); margin-right: 16px; }