:root {
  --accent: #0f6e6e;
  --accent-dark: #0b4f4f;
  --ink: #1d2733;
  --muted: #5b6b79;
  --bg: #f6f8fa;
}
* { box-sizing: border-box; }
body { margin: 0; font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--ink); background: #fff; }
a { color: var(--accent); }
header.top { display: flex; justify-content: space-between; align-items: center; padding: 18px 6vw; border-bottom: 1px solid #e3e9ee; }
header.top .brand { font-weight: 700; font-size: 22px; color: var(--accent-dark); text-decoration: none; }
header.top nav a { margin-left: 20px; text-decoration: none; color: var(--ink); }
.hero { padding: 72px 6vw 56px; background: linear-gradient(135deg, #e8f4f4, #f6f8fa); }
.hero h1 { font-size: clamp(30px, 4vw, 46px); line-height: 1.15; margin: 0 0 16px; max-width: 18ch; }
.hero p { font-size: 19px; color: var(--muted); max-width: 52ch; margin: 0 0 28px; }
.button { display: inline-block; background: var(--accent); color: #fff; padding: 12px 20px; border-radius: 10px; font-weight: 600; text-decoration: none; border: 0; cursor: pointer; font-size: 16px; }
section { padding: 56px 6vw; }
section.alt { background: var(--bg); }
h2 { font-size: 28px; margin: 0 0 20px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
.card { background: #fff; border: 1px solid #e3e9ee; border-radius: 14px; padding: 20px; }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.chat-inline { height: 560px; max-width: 720px; }
footer { padding: 28px 6vw; color: var(--muted); font-size: 14px; border-top: 1px solid #e3e9ee; }
.emergency { background: #fdecec; color: #8a1c1c; border-radius: 10px; padding: 12px 16px; display: inline-block; margin-top: 18px; font-size: 15px; }