:root {
  --ink: #17202d;
  --muted: #637083;
  --paper: #f7f8fc;
  --line: #e4e8f0;
  --accent: #0d9e84;
  --dark: #101b2b;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.7 Inter, "Microsoft YaHei", "PingFang SC", sans-serif; }
a { color: inherit; text-decoration: none; }
.site-header, main, footer { max-width: 1160px; margin: auto; padding-left: 28px; padding-right: 28px; }
.site-header { height: 76px; display: flex; align-items: center; justify-content: space-between; }
.brand { font-weight: 850; font-size: 20px; letter-spacing: -.6px; }
.brand span { color: var(--accent); margin-left: 3px; }
nav { display: flex; gap: 24px; align-items: center; font-size: 14px; font-weight: 650; }
nav a:not(.nav-cta) { color: var(--muted); }
.nav-cta { color: #fff; background: var(--dark); padding: 9px 14px; border-radius: 9px; }
.hero { padding: 78px 0 72px; max-width: 840px; }
.eyebrow { color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .13em; margin: 0 0 12px; }
h1, h2, h3 { margin: 0; line-height: 1.2; letter-spacing: -.045em; }
h1 { font-size: clamp(40px, 6.5vw, 76px); max-width: 760px; }
.hero-copy { color: var(--muted); max-width: 710px; font-size: 18px; margin: 25px 0 31px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; gap: 12px; border-radius: 10px; padding: 13px 18px; font-weight: 750; }
.button-primary { background: var(--accent); color: #fff; box-shadow: 0 10px 28px rgba(13, 158, 132, .2); }
.button-secondary { border: 1px solid #cdd5e0; background: #fff; }
.trust-list { display: flex; flex-wrap: wrap; gap: 38px; margin: 52px 0 0; }
.trust-list div { border-left: 2px solid #cfece6; padding-left: 12px; }
.trust-list dt { font-weight: 800; font-size: 14px; }
.trust-list dd { color: var(--muted); margin: 0; font-size: 13px; }
.section { padding: 74px 0; border-top: 1px solid var(--line); }
.section-heading { max-width: 640px; margin-bottom: 33px; }
h2 { font-size: clamp(30px, 4vw, 47px); }
.section-heading > p:last-child { color: var(--muted); margin: 14px 0 0; }
.card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.topic-card { min-height: 255px; border-radius: 16px; padding: 26px; display: flex; flex-direction: column; transition: transform .2s ease, box-shadow .2s ease; }
.topic-card:hover { transform: translateY(-4px); box-shadow: 0 16px 28px rgba(26, 40, 66, .1); }
.topic-card h3 { font-size: 25px; margin-top: 34px; }
.topic-card p { max-width: 390px; color: #445467; font-size: 14px; margin: 12px 0 auto; }
.card-number { font-size: 12px; color: #5d6b79; font-weight: 800; }
.card-link { margin-top: 25px; font-size: 14px; font-weight: 800; }
.aqua { background: #dff5ef; }.violet { background: #e8e6fb; }.coral { background: #fde6df; }.gold { background: #fff0c9; }
.about { display: grid; grid-template-columns: 1fr 1.08fr; gap: 72px; }
.about-copy { color: var(--muted); font-size: 17px; }
.about-copy p { margin: 0 0 17px; }
.text-link { display: inline-block; margin-top: 10px; color: var(--accent); font-weight: 800; }
.address-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.address-grid article { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 25px; }
.address-grid h3 { font-size: 22px; }
.address-grid p { color: var(--muted); font-size: 15px; margin: 14px 0 0; }
.address-grid strong { color: var(--ink); }
.faq { padding-bottom: 82px; }
details { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; margin: 10px 0; }
summary { cursor: pointer; font-weight: 800; }
details p { color: var(--muted); margin: 12px 0 0; }
footer { border-top: 1px solid var(--line); padding-top: 24px; padding-bottom: 32px; display: flex; justify-content: space-between; color: var(--muted); font-size: 13px; }
footer p { margin: 0; }
footer a { color: var(--accent); font-weight: 750; }
@media (max-width: 640px) {
  .site-header, main, footer { padding-left: 20px; padding-right: 20px; }
  .site-header { height: 66px; }
  nav a:not(.nav-cta) { display: none; }
  .hero { padding: 52px 0 54px; }
  .hero-copy { font-size: 16px; }
  .trust-list { gap: 18px; }
  .card-grid, .about, .address-grid { grid-template-columns: 1fr; }
  .about { gap: 25px; }
  .section { padding: 54px 0; }
  footer { display: block; }
  footer a { display: inline-block; margin-top: 5px; }
}