:root {
  --ink: #182b28;
  --muted: #5d6d67;
  --line: #e3e9e5;
  --paper: #fff;
  --canvas: #f6f8f5;
  --tint: #eef4ef;
  --green: #176b50;
  --green-deep: #123d35;
  --green-soft: #eaf5ef;
  --amber: #ad761d;
  --shadow: 0 18px 48px rgba(27, 57, 45, .10);
  font-family: "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  color: var(--ink);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-size: 16px; line-height: 1.6; }
a { color: var(--green); }
h1, h2, h3 { margin: 0; color: var(--green-deep); line-height: 1.2; letter-spacing: -.02em; }
h1 { font-size: clamp(32px, 5vw, 50px); }
h2 { font-size: clamp(26px, 3.4vw, 36px); margin-bottom: 18px; }
h3 { font-size: 18px; }
p { margin: 0 0 14px; }
.wrap { width: min(1160px, 100% - 32px); margin: 0 auto; }
.eyebrow { margin: 0 0 10px; color: var(--green); font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.eyebrow.light { color: #9fd3b6; }
.lead { color: var(--muted); font-size: 18px; max-width: 620px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 42px; padding: 0 18px; border: 1px solid transparent; border-radius: 8px; font-size: 15px; font-weight: 700; text-decoration: none; transition: filter .15s, transform .15s; }
.btn:hover { filter: brightness(.95); }
.btn:active { transform: translateY(1px); }
.btn-primary { color: #fff; background: var(--green-deep); }
.btn-ghost { color: var(--green-deep); border-color: var(--line); background: var(--paper); }
.btn-lg { min-height: 50px; padding: 0 22px; font-size: 16px; }

.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--line); background: rgba(255, 255, 255, .94); backdrop-filter: blur(8px); }
.header-row { display: flex; align-items: center; gap: 20px; min-height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--green-deep); text-decoration: none; }
.logo strong { display: block; font-size: 19px; line-height: 1; }
.logo small { display: block; margin-top: 3px; color: var(--muted); font-size: 9px; font-weight: 700; letter-spacing: .12em; }
.logo-mark { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 10px; color: #fff; background: var(--green-deep); font-weight: 800; font-size: 19px; }
.logo-mark.small { width: 32px; height: 32px; font-size: 16px; border-radius: 8px; }
.site-nav { display: flex; align-items: center; gap: 22px; margin-left: auto; }
.site-nav a:not(.btn) { color: var(--ink); font-size: 15px; font-weight: 600; text-decoration: none; }
.site-nav a:not(.btn):hover { color: var(--green); }
.menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); color: var(--green-deep); font-size: 20px; cursor: pointer; }

.hero { padding: 72px 0 64px; background: linear-gradient(180deg, var(--canvas), var(--paper)); }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero h1 { margin-bottom: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 18px; }
.hero-note { color: var(--muted); font-size: 15px; }
.cert-card { padding: 24px; border: 1px solid var(--line); border-radius: 16px; background: var(--paper); box-shadow: var(--shadow); }
.cert-head { display: flex; align-items: center; gap: 12px; padding-bottom: 16px; border-bottom: 1px dashed var(--line); }
.cert-head strong { display: block; color: var(--green-deep); }
.cert-head small { color: var(--muted); font-size: 13px; }
.cert-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 18px 0; }
.cert-fields dt { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .06em; }
.cert-fields dd { margin: 2px 0 0; font-weight: 700; }
.cert-fields .ok { color: var(--green); }
.cert-checks { display: grid; gap: 8px; margin: 0; padding: 16px 0 0; border-top: 1px dashed var(--line); list-style: none; font-size: 14px; }
.cert-checks li::before { content: "✓"; display: inline-grid; place-items: center; width: 20px; height: 20px; margin-right: 10px; border-radius: 50%; color: var(--green); background: var(--green-soft); font-size: 12px; font-weight: 800; }
.cert-caption { margin: 16px 0 0; color: var(--muted); font-size: 12px; text-align: right; }

.trust { border-block: 1px solid var(--line); background: var(--paper); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-grid div { padding: 26px 22px; border-left: 1px solid var(--line); }
.trust-grid div:first-child { border-left: 0; padding-left: 0; }
.trust-grid strong { display: block; color: var(--green-deep); }
.trust-grid span { color: var(--muted); font-size: 14px; }

.section { padding: 88px 0; }
.section-tint { background: var(--tint); }
.section-dark { background: var(--green-deep); color: #dce9e2; }
.section-dark h2 { color: #fff; }
.card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 32px; }
.card { padding: 26px; border: 1px solid var(--line); border-radius: 14px; background: var(--paper); }
.card h3 { margin: 16px 0 10px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card-icon { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 12px; color: var(--green); background: var(--green-soft); font-size: 22px; }

.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; margin: 32px 0 36px; padding: 0; list-style: none; }
.steps li { padding: 24px 20px; border-radius: 14px; background: var(--paper); }
.steps span { width: 36px; height: 36px; display: grid; place-items: center; margin-bottom: 14px; border-radius: 50%; color: #fff; background: var(--green); font-weight: 800; }
.steps h3 { margin-bottom: 8px; font-size: 17px; }
.steps p { margin: 0; color: var(--muted); font-size: 14px; }

.checks-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.check-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 0; padding: 0; list-style: none; }
.check-list li { padding: 18px; border: 1px solid var(--line); border-radius: 12px; }
.check-list strong { display: block; color: var(--green-deep); }
.check-list span { color: var(--muted); font-size: 14px; }

.why-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; }
.why-copy p { font-size: 18px; }

.faq-wrap { max-width: 820px; }
details { border-bottom: 1px solid var(--line); }
summary { padding: 20px 0; color: var(--green-deep); font-size: 18px; font-weight: 700; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--green); font-size: 22px; line-height: 1; }
details[open] summary::after { content: "−"; }
details p { color: var(--muted); }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.contact-card { padding: 30px; border-radius: 16px; background: var(--paper); box-shadow: var(--shadow); }
.contact-card h3 { margin-bottom: 14px; }
.contact-card p { color: var(--muted); }

.site-footer { padding: 28px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.footer-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px; }
.footer-row nav { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-row a { color: var(--muted); text-decoration: none; }
.footer-row a:hover { color: var(--green); }

@media (max-width: 1020px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid div:nth-child(3) { border-left: 0; padding-left: 0; }
}
@media (max-width: 860px) {
  .menu-toggle { display: block; margin-left: auto; }
  .header-cta { display: none; }
  .site-nav { position: absolute; top: 68px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 8px 16px 16px; border-bottom: 1px solid var(--line); background: var(--paper); box-shadow: var(--shadow); }
  .site-nav.open { display: flex; }
  .site-nav a:not(.btn) { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-login { margin-top: 12px; }
  .hero { padding: 48px 0; }
  .hero-grid, .checks-grid, .why-grid, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .section { padding: 64px 0; }
}
@media (max-width: 560px) {
  .card-grid, .steps, .check-list, .trust-grid { grid-template-columns: 1fr; }
  .trust-grid div { border-left: 0; padding: 18px 0; border-top: 1px solid var(--line); }
  .trust-grid div:first-child { border-top: 0; }
  .hero-actions .btn { width: 100%; }
  .cert-fields { grid-template-columns: 1fr 1fr; }
}