:root {
  --brand: #38A0D0;
  --brand-strong: #0C6A96;
  --brand-deep: #084E70;
  --ink: #1A1D1F;
  --muted: #5E6870;
  --line: #E4EAEE;
  --bg: #FFFFFF;
  --soft: #F4F8FA;
  --blue-soft: #E7F4FB;
  --header: 88px;
  --shadow: 0 18px 50px rgba(12, 80, 112, 0.1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Montserrat, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, a { font-family: inherit; }
.wrap { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }

.skip {
  position: absolute;
  left: 16px;
  top: -40px;
  background: var(--brand-strong);
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 200;
}
.skip:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo img { height: 56px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { font-size: 14px; font-weight: 500; color: #3C454C; }
.nav-links a:hover { color: var(--brand-strong); }
.nav-links .btn {
  min-height: 38px;
  padding: 0 16px;
  border-radius: 999px;
  background: #fff;
  color: #1787B5;
  border-color: #8ECBE6;
  font-size: 13.5px;
  font-weight: 600;
}
.nav-links .btn:hover { background: var(--blue-soft); color: var(--brand-deep); border-color: var(--brand); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 10px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--brand-strong); color: #fff; }
.btn-primary:hover { background: var(--brand-deep); }
.btn-ghost { background: #fff; color: var(--ink); border-color: #D5DEE3; }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-strong); }
.btn-light { background: #fff; color: var(--brand-deep); }
.btn-light:hover { background: var(--blue-soft); }

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  padding: 10px;
  cursor: pointer;
}
.menu-toggle span,
.menu-toggle span::before,
.menu-toggle span::after {
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  position: relative;
}
.menu-toggle span::before,
.menu-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
}
.menu-toggle span::before { top: -7px; }
.menu-toggle span::after { top: 7px; }

.hero {
  position: relative;
  overflow: hidden;
  padding: 64px 0 72px;
  background:
    radial-gradient(ellipse 70% 55% at 50% 72%, rgba(56, 160, 208, 0.16), transparent 68%),
    linear-gradient(#fff, #f7fbfe);
}
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(280px, 0.92fr) minmax(380px, 1fr);
  gap: 24px 40px;
  align-items: center;
}
.hero-copy { max-width: 560px; }
.eyebrow {
  margin: 0 0 12px;
  color: var(--brand-strong);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  margin-bottom: 16px;
  font-size: clamp(1.85rem, 4.4vw, 3.35rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
}
h1 span { color: var(--brand); }
.lead {
  max-width: 38rem;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 1.05rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.hub-diagram { width: 100%; height: auto; display: block; }
.hub-fallback { display: none; }
.hub-card {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 6px;
  background: #fff;
  border: 1px solid #e6eef3;
  border-radius: 999px;
  box-shadow: 0 8px 18px rgba(14, 90, 130, 0.07);
  font-size: 13px;
  font-weight: 600;
  color: #243038;
}
.hub-ico {
  width: 26px;
  height: 26px;
  flex: none;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #e7f4fb;
  color: var(--brand-strong);
}

.section { padding: 88px 0; scroll-margin-top: 88px; }
.section-soft { background: var(--soft); }
h2 {
  margin-bottom: 12px;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}
h2 span { color: var(--brand); }
.section-sub { max-width: 36rem; color: var(--muted); margin-bottom: 0; }

.offers {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 64px;
  align-items: start;
}
.offers-intro { position: sticky; top: 108px; }
.offers-intro .btn { margin-top: 24px; }
.offer-list { display: grid; }
.offer {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 16px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}
.offer:last-child { border-bottom: 1px solid var(--line); }
.offer-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--blue-soft);
  color: var(--brand-strong);
}
.offer h3 { margin: 2px 0 6px; font-size: 1.05rem; }
.offer p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 36px;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 24px;
}
.card h3 { margin: 14px 0 8px; font-size: 1.15rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }
.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--blue-soft);
  color: var(--brand-strong);
}

.band {
  background: var(--brand-strong);
  color: #fff;
  text-align: center;
  padding: 72px 0;
}
.band h2 { margin-bottom: 8px; }
.band p { margin: 0 auto; max-width: 36rem; color: rgba(255, 255, 255, 0.88); }

.contact-box {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 40px;
  align-items: start;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 36px;
  box-shadow: var(--shadow);
}
.contact-box p { color: var(--muted); }
.contact-form { display: grid; gap: 14px; }
.contact-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-form label { display: grid; gap: 6px; font-size: 13px; font-weight: 600; color: #3c454c; }
.contact-form input,
.contact-form textarea {
  width: 100%;
  font: inherit;
  font-weight: 500;
  color: var(--ink);
  background: #fff;
  border: 1px solid #d5dee3;
  border-radius: 10px;
  padding: 12px 14px;
}
.contact-form textarea { min-height: 120px; resize: vertical; }
.contact-form input:focus,
.contact-form textarea:focus { outline: 2px solid rgba(56, 160, 208, 0.35); border-color: var(--brand); }
.hp { position: absolute; left: -9999px; height: 0; overflow: hidden; }
.form-status { min-height: 1.2em; margin: 0; font-size: 14px; }
.form-status.ok { color: #0c6a96; }
.form-status.err { color: #b42318; }
.contact-form button:disabled { opacity: 0.6; cursor: wait; }

.faq { display: grid; gap: 12px; margin-top: 28px; }
.faq details {
  background: #fff;
  border-radius: 14px;
  padding: 4px 18px;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  padding: 16px 8px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--brand-strong); font-size: 1.3rem; font-weight: 500; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 16px; color: var(--muted); }

.page { padding: 56px 0 80px; background: var(--soft); }
.page-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 40px;
  box-shadow: var(--shadow);
}
.page h1 { margin: 8px 0 12px; font-size: clamp(2rem, 4vw, 2.6rem); letter-spacing: -0.03em; }
.page-lead { max-width: 38rem; color: var(--muted); margin: 0 0 24px; }
.page-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.prose h2 { font-size: 1.15rem; margin: 28px 0 8px; }
.prose p, .prose li { color: var(--muted); }
.prose ul { margin: 8px 0 0; padding-left: 1.2rem; }
.prose li + li { margin-top: 6px; }
.prose a { color: var(--brand-strong); }
.page-note { margin: 32px 0 0; font-size: 13px; color: var(--muted); }

.site-footer {
  background: #fff;
  border-top: 1px solid var(--line);
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
}
.footer-brand img { height: 48px; width: auto; margin-bottom: 14px; }
.footer-brand p, .site-footer a, .site-footer li { color: var(--muted); font-size: 14px; }
.site-footer h3 { margin: 0 0 12px; font-size: 14px; }
.site-footer ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.site-footer a:hover { color: var(--brand-strong); }
.footer-base {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 900px) {
  :root { --header: 72px; }
  .menu-toggle { display: grid; place-items: center; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 20px;
    background: #fff;
    border-bottom: 1px solid var(--line);
  }
  .nav-links.open { display: flex; }
  .nav-links a, .nav-links .btn { width: 100%; }
  .nav-links a { padding: 14px 4px; border-bottom: 1px solid var(--line); }
  .nav-links .btn { margin-top: 12px; }
  .hero { padding: 40px 0 48px; }
  .offers, .cards, .contact-box, .footer-grid { grid-template-columns: 1fr; }
  .offers-intro { position: static; }
  .hero .wrap { grid-template-columns: 1fr; }
  .hub-diagram { display: none; }
  .hub-fallback {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
  }
  .contact-row { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
}

@media (max-width: 480px) {
  .wrap { width: min(1120px, calc(100% - 32px)); }
  h1 { font-size: 1.7rem; }
  .logo img { height: 44px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn, .contact-form .btn, .page-actions .btn { width: 100%; }
  .contact-box, .page-card { padding: 24px; }
}