:root {
  --teal: #0d7377;
  --teal-d: #085458;
  --wash: #e7f4f4;
  --page: #f7fbfb;
  --ink: #163033;
  --muted: #4d6466;
  --coral: #e85d04;
  --card: #ffffff;
  --line: #c5dede;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--page);
  color: var(--ink);
  line-height: 1.7;
}

.top {
  background: #fff;
  border-bottom: 3px solid var(--teal);
}
.top-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 24px 0;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--teal-d);
  font-weight: 700;
  font-size: 24px;
  padding-bottom: 14px;
}
.top nav { display: flex; gap: 4px; }
.top nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 12px 16px 14px;
  border-bottom: 3px solid transparent;
  margin-bottom: -3px;
}
.top nav a:hover { color: var(--teal); }
.top nav a.active {
  color: var(--teal-d);
  border-bottom-color: var(--coral);
  font-weight: 700;
}

.hero {
  background: radial-gradient(circle at 12% 20%, #c8ecec 0, transparent 36%),
              linear-gradient(180deg, #dff3f3 0%, var(--page) 100%);
  padding: 48px 0 20px;
}
.hero-inner, .inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}
.hero h1 {
  font-size: 36px;
  line-height: 1.3;
  margin: 0 0 14px;
  max-width: 18em;
}
.hero .lead { font-size: 17px; color: var(--muted); max-width: 46em; }
.icon-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 28px 0 8px;
}
.icon-row article {
  background: var(--card);
  border-radius: 12px;
  padding: 16px 16px 8px;
  box-shadow: 0 8px 24px rgba(13, 115, 119, 0.08);
}
.icon-row h3 { margin: 8px 0 6px; font-size: 16px; color: var(--teal-d); }
.icon-row p { margin: 0 0 12px; font-size: 14px; color: var(--muted); }

.btn {
  display: inline-block;
  text-decoration: none;
  border-radius: 8px;
  padding: 12px 20px;
  font-weight: 700;
  margin: 0 8px 8px 0;
}
.btn-coral { background: var(--coral); color: #fff; }
.btn-coral:hover { filter: brightness(1.05); }
.btn-teal { background: var(--teal); color: #fff; }
.btn-ghost {
  background: #fff;
  color: var(--teal-d);
  border: 1px solid var(--teal);
}

section { padding: 36px 0 8px; }
h2 {
  font-size: 26px;
  margin: 0 0 12px;
  color: var(--teal-d);
}
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 16px;
}
.feat-grid article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 18px 8px;
}
.feat-grid h3 { margin: 0 0 8px; font-size: 17px; }

.panel {
  background: var(--card);
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 20px 22px 8px;
  margin: 12px 0 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 16px;
}
th, td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; }
th { background: var(--wash); color: var(--teal-d); }

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 24px;
}
.faq-grid h3 { font-size: 16px; margin: 0 0 6px; }
.faq-grid p { margin: 0; color: var(--muted); }

.dl-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 16px 0;
}
.dl-row article {
  background: #fff;
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  border: 1px solid var(--line);
}
.dl-row h3 { margin: 8px 0; font-size: 16px; }

.cta {
  background: var(--wash);
  border-radius: 12px;
  padding: 22px;
  margin: 18px 0;
}

footer {
  margin-top: 40px;
  background: var(--teal-d);
  color: #d7efef;
  padding: 28px 0;
  font-size: 13px;
  line-height: 1.8;
}
footer a { color: #fff; }
footer .safe { color: #b8ecec; }

ol, ul { padding-left: 20px; }
li { margin-bottom: 8px; }

@media (max-width: 900px) {
  .top-inner { flex-direction: column; align-items: flex-start; }
  .icon-row, .feat-grid, .faq-grid, .dl-row { grid-template-columns: 1fr; }
  .hero h1 { font-size: 28px; }
}