:root {
  --bg: #f7f8f6;
  --ink: #1f2a24;
  --teal: #1f6b57;
  --mute: #5d6a63;
  --line: #d7ddd8;
  --card: #fff;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.7; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.top { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; background: #fff; border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.mark { font-weight: 800; color: var(--teal); letter-spacing: .08em; }
.mark small { display: block; color: var(--mute); font-weight: 400; font-size: 12px; margin-top: 2px; }
nav { display: flex; flex-wrap: wrap; gap: 16px; font-size: 14px; }
nav a:hover { color: var(--teal); }
.banner { display: grid; grid-template-columns: 1fr 1fr; background: #e8efe9; }
.banner img { width: 100%; height: 100%; min-height: 420px; object-fit: cover; }
.banner-text { padding: 56px 40px; align-self: center; }
.banner-text h1 { margin: 0 0 14px; font-size: clamp(28px, 4vw, 40px); }
.banner-text p { color: var(--mute); margin: 0; }
.sec { padding: 60px 0; }
.sec h2 { margin: 0 0 8px; }
.lead { color: var(--mute); margin: 0 0 24px; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.item { background: var(--card); border: 1px solid var(--line); }
.item img { height: 250px; width: 100%; object-fit: cover; }
.item div { padding: 16px 18px 20px; }
.item h3 { margin: 0 0 8px; font-size: 18px; }
.item p { margin: 0; color: var(--mute); font-size: 14px; }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.fact { background: #fff; border-left: 4px solid var(--teal); padding: 18px; }
.page-head { padding: 32px 0 6px; }
.prose { max-width: 760px; padding-bottom: 56px; }
.prose h3 { color: var(--teal); }
.prose p, .prose li { color: var(--mute); }
.form { display: grid; gap: 12px; max-width: 520px; }
.form input, .form textarea { border: 1px solid var(--line); padding: 12px; font: inherit; }
.btn { border: 0; background: var(--teal); color: #fff; padding: 12px 18px; font: inherit; cursor: pointer; width: fit-content; }
footer { background: var(--ink); color: #d5ddd8; padding: 26px 0; font-size: 13px; }
.foot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.foot a { color: #e7f3ec; margin-right: 10px; }
@media (max-width: 860px) {
  .banner, .grid, .facts { grid-template-columns: 1fr; }
  .banner img { min-height: 240px; height: 240px; }
  .banner-text { padding: 32px 20px; }
}