:root { --ink: #1c2b33; --muted: #5b6b75; --line: #e4e9ee; --accent: #1f6feb; --bg: #ffffff; --soft: #f4f7fa; }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.6 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: var(--ink); background: var(--bg); }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }
.top { border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-weight: 700; font-size: 20px; color: var(--ink); text-decoration: none; letter-spacing: .2px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 22px; font-size: 15px; }
nav a:hover { color: var(--ink); }
.hero { background: var(--soft); padding: 72px 0; }
.hero h1 { font-size: 34px; line-height: 1.25; margin: 0 0 16px; max-width: 720px; }
.hero p { font-size: 18px; color: var(--muted); max-width: 640px; margin: 0 0 28px; }
.btn { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; padding: 12px 22px; border-radius: 8px; font-weight: 600; }
.btn:hover { filter: brightness(.95); }
.cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; padding: 56px 20px; }
.cols article { border: 1px solid var(--line); border-radius: 12px; padding: 22px; }
.cols h2, section h2 { font-size: 20px; margin: 0 0 10px; }
section.wrap { padding: 8px 20px 48px; }
.contact { border-top: 1px solid var(--line); padding-top: 40px; }
a { color: var(--accent); }
footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
.small { font-size: 13px; }
@media (max-width: 720px) {
  .cols { grid-template-columns: 1fr; padding: 40px 20px; }
  .hero { padding: 48px 0; }
  .hero h1 { font-size: 26px; }
  nav a { margin-left: 14px; }
}