:root {
  --ink: #16181d;
  --muted: #545a63;
  --line: #e2e3de;
  --ground: #f6f6f3;
  --card: #ffffff;
  --accent: #0b5f6b;
  --accent-ink: #ffffff;
  --alt: #eef3f2;
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--ground);
}
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.55; }
a { color: var(--accent); }
.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: var(--card); padding: 8px 12px; z-index: 10; }

.top { position: sticky; top: 0; z-index: 5; background: rgba(246, 246, 243, .92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; gap: 24px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 700; font-size: 18px; }
.links { display: flex; gap: 20px; margin-left: auto; flex-wrap: wrap; }
.links a { color: var(--ink); text-decoration: none; font-size: 15px; font-weight: 500; padding: 10px 0; }
.links a:hover { color: var(--accent); }
.lang select { min-height: 40px; border: 1px solid var(--line); border-radius: 8px; padding: 0 10px; font: inherit; background: var(--card); }

.hero { padding: 96px 0 72px; }
.eyebrow { margin: 0; font-weight: 600; color: var(--accent); font-size: 15px; letter-spacing: .02em; }
h1 { margin: 12px 0 0; font-size: clamp(32px, 5vw, 54px); line-height: 1.1; letter-spacing: -.02em; max-width: 18ch; }
.lead { margin: 20px 0 0; font-size: clamp(17px, 2vw, 20px); color: var(--muted); max-width: 62ch; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.btn { display: inline-flex; align-items: center; min-height: 48px; padding: 0 22px; border-radius: 10px; border: 1px solid #cfd2cb; background: var(--card); color: var(--ink); font-weight: 600; text-decoration: none; }
.btn.primary { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn:hover { border-color: var(--accent); }

.band { padding: 72px 0; border-top: 1px solid var(--line); }
.band.alt { background: var(--alt); }
h2 { margin: 0; font-size: clamp(26px, 3.2vw, 34px); letter-spacing: -.01em; line-height: 1.2; }
.intro { color: var(--muted); font-size: 18px; max-width: 60ch; margin: 14px 0 0; }
h3 { margin: 0; font-size: 18px; }
.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; margin-top: 36px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 24px; }
.card p { margin: 10px 0 0; color: var(--muted); }

.steps { list-style: none; padding: 0; margin: 36px 0 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.steps li { display: flex; gap: 16px; }
.steps p { margin: 6px 0 0; color: var(--muted); }
.num { flex: none; width: 40px; height: 40px; border-radius: 999px; background: var(--accent); color: var(--accent-ink); display: flex; align-items: center; justify-content: center; font-weight: 700; }

.two { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 40px; align-items: start; }
.checks { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 14px; }
.checks li { position: relative; padding: 16px 18px 16px 48px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.checks li::before { content: ""; position: absolute; left: 18px; top: 20px; width: 16px; height: 9px; border-left: 2.5px solid var(--accent); border-bottom: 2.5px solid var(--accent); transform: rotate(-45deg); }

.contact { text-align: left; }
.contact .btn { margin-top: 24px; }

.foot { border-top: 1px solid var(--line); padding: 32px 0 48px; color: var(--muted); font-size: 14px; }
.ruo { max-width: 80ch; }
.picker { padding: 80px 0; }
.picker ul { list-style: none; padding: 0; display: flex; gap: 16px; flex-wrap: wrap; }

@media (max-width: 720px) {
  .links { display: none; }
  .lang { margin-left: auto; }
  .hero { padding: 56px 0 48px; }
  .band { padding: 52px 0; }
}