* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: #f3f7f7;
  color: #1d2a2c;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.62;
}

.top {
  height: 58px;
  background: #0d7377;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
}

.top .brand {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.top nav a {
  color: #d7f1f1;
  text-decoration: none;
  margin-left: 18px;
  font-size: 14px;
}

.top nav a.current {
  background: #14919b;
  padding: 6px 10px;
}

.wrap { width: min(1180px, 94%); margin: 24px auto 56px; }

.banner {
  background: linear-gradient(120deg, #0d7377 0%, #14919b 55%, #2a9d8f 100%);
  color: #fff;
  padding: 36px 40px 32px;
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 24px;
}

.banner h1 { font-size: 28px; line-height: 1.4; margin-bottom: 12px; }
.banner p { opacity: 0.95; margin-bottom: 18px; }

.dl-box {
  background: rgba(255,255,255,0.12);
  padding: 18px;
  border: 1px solid rgba(255,255,255,0.25);
}

.btn {
  display: inline-block;
  background: #fff;
  color: #0d7377;
  text-decoration: none;
  padding: 8px 14px;
  margin: 0 8px 8px 0;
  font-size: 14px;
  font-weight: 600;
}

.btn-dark { background: #083f42; color: #fff; }

.tri {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 18px 0;
}

.card {
  background: #fff;
  border: 1px solid #cfe3e3;
  padding: 16px 16px 8px;
}

.card h2 { font-size: 17px; color: #0d7377; margin-bottom: 8px; }
.card p { font-size: 14px; margin-bottom: 10px; }

.tag {
  display: inline-block;
  width: 22px;
  height: 22px;
  line-height: 22px;
  text-align: center;
  background: #0d7377;
  color: #fff;
  font-size: 12px;
  margin-right: 6px;
}

.block {
  background: #fff;
  border: 1px solid #cfe3e3;
  padding: 20px 22px 10px;
  margin: 16px 0;
}

.block h2 { font-size: 20px; color: #0d7377; margin-bottom: 10px; }
.block p { margin-bottom: 12px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 10px 0 16px; }
th, td { border: 1px solid #cfe3e3; padding: 7px 8px; text-align: left; }
th { background: #e6f3f3; }

.faq dt { font-weight: 700; margin-top: 12px; }
.faq dd { margin: 4px 0 0 0; color: #4a5a5c; }

.foot {
  background: #083f42;
  color: #c9dddd;
  padding: 22px 28px;
  font-size: 13px;
}

.foot a { color: #9ee4e4; }

@media (max-width: 900px) {
  .banner, .tri { grid-template-columns: 1fr; }
  .top { height: auto; padding: 12px; flex-wrap: wrap; }
}