:root {
  --bg: #f5fbff;
  --bg-soft: #eef7fc;
  --panel: #ffffff;
  --text: #173042;
  --muted: #4f6a7b;
  --line: rgba(43, 122, 163, 0.18);
  --primary: #2d7aa3;
  --primary-strong: #1f5f84;
  --accent: #7cc7e8;
  --shadow: 0 18px 42px rgba(22, 63, 89, 0.12);
  --radius: 18px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(180deg, #f7fbfe 0%, #edf6fb 100%);
  color: var(--text);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1120px, calc(100% - 2rem)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 1000;
  backdrop-filter: blur(10px);
  background: rgba(247, 251, 254, 0.9);
  border-bottom: 1px solid var(--line);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 74px; gap: 1rem; }
.brand { font-weight: 700; letter-spacing: 0.02em; }
.site-nav { display: flex; gap: 1.25rem; }
.site-nav a { color: var(--muted); }
.site-nav a:hover { color: var(--primary-strong); }
.nav-toggle { display: none; background: transparent; color: var(--text); border: 1px solid var(--line); border-radius: 10px; padding: 0.5rem 0.75rem; }
.hero { padding: 5rem 0 4rem; }
.hero-grid, .split-grid, .contact-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 2rem; align-items: start; }
.eyebrow { color: var(--primary); text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.8rem; margin: 0 0 0.75rem; }
h1, h2, h3 { line-height: 1.2; margin-top: 0; }
h1 { font-size: clamp(2.4rem, 5vw, 4rem); margin-bottom: 1rem; }
h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); margin-bottom: 1rem; }
h3 { font-size: 1.2rem; }
.hero-copy { font-size: 1.1rem; color: var(--muted); max-width: 52rem; }
.cta-row { display: flex; gap: 1rem; flex-wrap: wrap; margin: 1.5rem 0; }
.btn { display: inline-flex; align-items: center; justify-content: center; border-radius: 999px; padding: 0.9rem 1.3rem; font-weight: 700; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%); color: #fff; }
.btn-secondary { border-color: var(--line); color: var(--text); }
.hero-points, .check-list, .plain-list { padding-left: 1.2rem; color: var(--muted); }
.hero-card, .panel, .card, .lead-form, .contact-panel, .chat-widget {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero-card, .panel, .contact-panel { padding: 1.5rem; }
.stat-grid, .card-grid { display: grid; gap: 1rem; }
.single-col { grid-template-columns: 1fr; }
.stat-grid article { padding: 1rem; border: 1px solid var(--line); border-radius: 14px; background: rgba(124, 199, 232, 0.08); }
.stat-grid span { display: block; color: var(--muted); font-size: 0.95rem; margin-top: 0.35rem; }
.section { padding: 4.5rem 0; }
.alt-section { background: rgba(255,255,255,0.45); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.card-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { padding: 1.4rem; }
.card p, .panel p { color: var(--muted); }
.lead-form { padding: 1.5rem; display: grid; gap: 1rem; }
.lead-form label { display: grid; gap: 0.45rem; font-size: 0.95rem; }
input, select, textarea {
  width: 100%; border-radius: 12px; border: 1px solid var(--line); background: #fff; color: var(--text);
  padding: 0.85rem 0.95rem; font: inherit;
}
textarea { resize: vertical; }
.form-status { min-height: 1.5rem; color: var(--primary-strong); margin: 0; }
.site-footer { padding: 1.5rem 0; border-top: 1px solid var(--line); background: rgba(255,255,255,0.65); }
.footer-wrap { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; color: var(--muted); }
.chat-shell { position: fixed; right: 1rem; bottom: 1rem; z-index: 1100; }
.chat-toggle {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #fff; border: none; border-radius: 999px; padding: 0.95rem 1.2rem; font-weight: 700; cursor: pointer;
  box-shadow: var(--shadow);
}
.chat-widget { width: min(360px, calc(100vw - 2rem)); overflow: hidden; margin-bottom: 0.75rem; }
.chat-header { display: flex; justify-content: space-between; align-items: center; padding: 0.95rem 1rem; border-bottom: 1px solid var(--line); }
.chat-close { background: transparent; color: var(--text); border: 0; font-size: 1.2rem; cursor: pointer; }
.chat-messages { min-height: 280px; max-height: 360px; overflow: auto; padding: 1rem; display: grid; gap: 0.75rem; background: #f8fcff; }
.chat-bubble { padding: 0.8rem 0.9rem; border-radius: 14px; max-width: 88%; }
.chat-user { background: rgba(124, 199, 232, 0.28); margin-left: auto; }
.chat-bot { background: rgba(45, 122, 163, 0.10); }
.chat-form { display: flex; gap: 0.5rem; padding: 0.85rem; border-top: 1px solid var(--line); }
.chat-form input { flex: 1; }
.chat-form button { border: 0; border-radius: 12px; padding: 0 1rem; background: var(--primary); color: #fff; font-weight: 700; }
@media (max-width: 900px) {
  .hero-grid, .split-grid, .contact-grid, .card-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: inline-block; }
  .site-nav { display: none; position: absolute; left: 1rem; right: 1rem; top: 74px; background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 1rem; flex-direction: column; }
  .site-nav.open { display: flex; }
}