:root {
  --bg: #f4f6f2;
  --card: #ffffff;
  --ink: #1b2430;
  --muted: #5d6b63;
  --line: #dce4dc;
  --brand: #0f6b4c;
  --brand-dark: #0b513a;
  --brand-soft: #e7f4ee;
  --copper: #b87333;
  --warn: #8a5a12;
  --shadow: 0 10px 30px rgba(27, 36, 48, 0.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
}
img { max-width: 100%; display: block; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: min(1080px, calc(100% - 32px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  font-weight: 700;
  text-decoration: none;
}
.brand img { width: 36px; height: 36px; }
.brand small { display: block; font-size: 12px; color: var(--muted); font-weight: 400; }
.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}
.nav-links a {
  color: var(--ink);
  font-size: 15px;
  text-decoration: none;
}
.nav-links a[aria-current="page"],
.nav-links a:hover { color: var(--brand); font-weight: 600; }
.nav-cta {
  background: var(--brand);
  color: #fff !important;
  padding: 8px 14px;
  border-radius: 999px;
  text-decoration: none !important;
}

.hero, .section { padding: 36px 0 48px; }
.hero {
  background:
    radial-gradient(circle at top right, #d7efe4 0, transparent 34%),
    linear-gradient(180deg, #fff, var(--bg));
}
.kicker {
  color: var(--brand);
  font-size: 13px;
  letter-spacing: .12em;
  font-weight: 700;
}
h1 { font-size: clamp(28px, 5vw, 42px); line-height: 1.25; margin: 8px 0 12px; }
h2 { font-size: 24px; margin-bottom: 12px; }
h3 { font-size: 18px; margin-bottom: 8px; }
.lead { font-size: 17px; color: var(--muted); max-width: 720px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 24px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--shadow);
}
.card h3 { color: var(--brand-dark); }
.muted { color: var(--muted); }
.facts { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }
.fact {
  background: var(--brand-soft);
  border-radius: 12px;
  padding: 12px 16px;
  min-width: 140px;
}
.fact b { display: block; font-size: 22px; color: var(--brand-dark); }

.steps { counter-reset: step; display: grid; gap: 12px; }
.steps li {
  list-style: none;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 16px 16px 56px;
  position: relative;
}
.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 16px; top: 16px;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 13px;
}

.amount-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 16px 0; }
.amount, .pay-btn, button, .ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  min-height: 48px;
  padding: 0 16px;
  font-size: 16px;
  cursor: pointer;
  text-decoration: none;
}
.amount.selected, .amount:hover { border-color: var(--brand); background: var(--brand-soft); color: var(--brand-dark); text-decoration: none; }
.pay-btn {
  background: var(--brand);
  color: #fff;
  border: 0;
  width: 100%;
  margin-top: 16px;
  font-weight: 700;
}
.pay-btn:hover { background: var(--brand-dark); text-decoration: none; }
.summary { background: var(--brand-soft); border-radius: 14px; padding: 16px; }
.summary p { display: flex; justify-content: space-between; gap: 12px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
input[type="number"], input[type="text"] {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0 12px;
  font-size: 16px;
}

.contact-list { display: grid; gap: 10px; }
.contact-list div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
}
.contact-list span { display: block; color: var(--muted); font-size: 13px; }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 13px;
  background: #fff;
}
.site-footer .legal { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 8px; }

@media (max-width: 720px) {
  .nav { flex-wrap: wrap; padding: 10px 0; }
  .amount-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-cta { margin-left: auto; }
}