:root {
  --ink: #16202a;
  --muted: #5d6b78;
  --accent: #0e7c5b;
  --accent-dark: #0a5c44;
  --bg: #f6f8f7;
  --card: #ffffff;
  --line: #e1e6e3;
  --maxw: 1040px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
}
a { color: var(--accent); }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* header */
.site-header { background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 700; letter-spacing: .01em; }
.brand svg { width: 28px; height: 28px; }
.brand em { font-style: normal; color: var(--accent); }
.nav a { color: var(--muted); text-decoration: none; margin-left: 22px; font-size: 15px; }
.nav a.active, .nav a:hover { color: var(--ink); }
.nav .cta { background: var(--accent); color: #fff; padding: 8px 14px; border-radius: 8px; }
.nav .cta:hover { background: var(--accent-dark); color: #fff; }
.menu-toggle { display: none; }

/* hero */
.hero { padding: 72px 0 48px; background: linear-gradient(180deg, #ffffff 0%, var(--bg) 100%); }
.hero h1 { font-size: 40px; line-height: 1.15; margin: 0 0 18px; max-width: 760px; }
.hero p.lead { font-size: 19px; color: var(--muted); max-width: 680px; margin: 0 0 28px; }
.hero .actions a { display: inline-block; margin-right: 12px; text-decoration: none; padding: 12px 18px; border-radius: 8px; font-weight: 600; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { border: 1px solid var(--line); color: var(--ink); background: #fff; }

/* sections */
section { padding: 48px 0; }
section h2 { font-size: 26px; margin: 0 0 8px; }
section p.sub { color: var(--muted); margin: 0 0 28px; max-width: 680px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .num { display: inline-block; width: 28px; height: 28px; border-radius: 50%; background: #e6f3ee; color: var(--accent); font-weight: 700; text-align: center; line-height: 28px; margin-bottom: 10px; font-size: 14px; }

.steps { counter-reset: step; }
.steps .card { position: relative; }

.two-col { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: start; }
.two-col h2 { margin-top: 0; }
.list { padding-left: 18px; color: var(--muted); }
.list li { margin-bottom: 8px; }

.band { background: var(--ink); color: #fff; }
.band h2 { color: #fff; }
.band p { color: #c9d2db; }
.band a { color: #8fd7bd; }

.prose { max-width: 760px; }
.prose h2 { font-size: 22px; margin: 32px 0 8px; }
.prose h3 { font-size: 17px; margin: 24px 0 6px; }
.prose p, .prose li { color: #3a4653; }
.prose .meta { color: var(--muted); font-size: 14px; }

.flow { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
.flow svg { width: 100%; height: auto; display: block; }

.contact-box { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 28px; }
.contact-box dt { font-weight: 600; margin-top: 12px; }
.contact-box dd { margin: 2px 0 0; color: var(--muted); }

/* footer */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 14px; background: #fff; }
.site-footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.site-footer a { color: var(--muted); text-decoration: none; margin-right: 16px; }
.site-footer a:hover { color: var(--ink); }

@media (max-width: 720px) {
  .hero h1 { font-size: 30px; }
  .two-col { grid-template-columns: 1fr; }
  .nav a { margin-left: 12px; font-size: 14px; }
  .nav .cta { display: none; }
}