:root {
  --bg: #edf2f2;
  --paper: rgba(255, 255, 255, 0.85);
  --card: rgba(248, 251, 255, 0.92);
  --ink: #0f1a24;
  --muted: #4d6475;
  --line: rgba(20, 50, 70, 0.12);
  --accent: #0f766e;
  --accent-strong: #0a5c55;
  --accent-soft: #d6efec;
  --shadow: 0 22px 70px rgba(20, 45, 65, 0.12);
  --radius-xl: 34px;
  --radius-lg: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.14), transparent 30%),
    radial-gradient(circle at top right, rgba(96, 165, 250, 0.12), transparent 26%),
    linear-gradient(180deg, #fafdfd 0%, var(--bg) 52%, #dee8ea 100%);
  font-family: "Avenir Next", "Segoe UI", Helvetica, Arial, sans-serif;
}
img, video { display: block; max-width: 100%; }
a { color: var(--accent); }
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px; background: rgba(255,255,255,.7);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
}
header .logo { font-weight: 800; font-size: 18px; color: var(--accent-strong); }
header nav a {
  margin-left: 28px; text-decoration: none; color: var(--muted); font-size: 14px; font-weight: 600;
}
header nav a:hover { color: var(--accent); }
.hero {
  padding: 60px 0 50px; text-align: center;
}
.hero h1 { font-size: 40px; line-height: 1.15; margin: 0 0 16px; letter-spacing: -.02em; }
.hero p { font-size: 18px; color: var(--muted); max-width: 650px; margin: 0 auto 28px; line-height: 1.5; }
.btn-group { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 999px;
  text-decoration: none; font-weight: 700; font-size: 15px;
  background: var(--accent); color: #fff; transition: .2s;
}
.btn:hover { background: var(--accent-strong); }
.btn-outline {
  background: transparent; color: var(--ink); border: 1.5px solid var(--line);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.section { padding: 50px 0; }
.section h2 { font-size: 28px; margin: 0 0 24px; letter-spacing: -.015em; }
.section p { color: var(--muted); line-height: 1.6; max-width: 680px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; margin-top: 24px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 24px; backdrop-filter: blur(4px);
}
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; font-size: 14px; color: var(--muted); }
footer {
  padding: 40px 0; text-align: center; border-top: 1px solid var(--line);
  color: var(--muted); font-size: 14px;
}
footer a { color: var(--accent); text-decoration: none; }