:root {
  --ink: #1F5C45;
  --ink-dark: #0F3D2E;
  --paper: #FFFFFF;
  --mist: #F4F7F5;
  --line: #DDE5E0;
  --text: #26312C;
  --muted: #5F6E67;
  --seal: #B03A2E;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  color: var(--text);
  background: var(--paper);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* 头部 */
header { border-bottom: 1px solid var(--line); background: var(--paper); }
header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand {
  display: flex; align-items: center; gap: 10px;
  font-size: 18px; color: var(--ink-dark); text-decoration: none; font-weight: 600;
}
.brand .dot { width: 10px; height: 10px; background: var(--ink); border-radius: 2px; }
.brand small { font-size: 12px; color: var(--muted); font-weight: 400; }
nav a { margin-left: 28px; color: var(--text); text-decoration: none; font-size: 15px; }
nav a:hover, nav a.active { color: var(--ink); }

/* 首屏 */
.hero { padding: 72px 0 56px; }
.hero .wrap { display: flex; gap: 48px; align-items: center; }
.hero-text { flex: 1; }
h1 { font-size: 34px; color: var(--ink-dark); line-height: 1.35; font-weight: 600; }
.tagline {
  font-family: "KaiTi", "STKaiti", "Kaiti SC", serif;
  font-size: 22px; color: var(--ink); margin: 18px 0 10px;
}
.lead { color: var(--muted); font-size: 16px; max-width: 30em; }
.btn {
  display: inline-block; padding: 12px 28px;
  border: 1px solid var(--ink); color: var(--ink);
  text-decoration: none; border-radius: 4px;
  margin-top: 24px; margin-right: 12px; font-size: 15px;
}
.btn.solid { background: var(--ink); color: #fff; }
.btn:hover { opacity: .88; }
.hero-img { width: 380px; max-width: 42%; }
.hero-img img { width: 100%; border-radius: 12px; border: 1px solid var(--line); display: block; }

/* 区块 */
section { padding: 56px 0; }
.sec-alt { background: var(--mist); }
h2 { font-size: 24px; color: var(--ink-dark); margin-bottom: 8px; font-weight: 600; }
.sec-sub { color: var(--muted); margin-bottom: 32px; }

.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: center; }
.card {
  background: #fff; border: 1px solid var(--line);
  border-radius: 10px; padding: 28px;
}
.card h3 { color: var(--ink-dark); font-size: 17px; margin: 10px 0; font-weight: 600; }
.card p { color: var(--muted); font-size: 14px; }
.card .no { font-family: "KaiTi", "STKaiti", serif; font-size: 24px; color: var(--ink); opacity: .55; }
.card img { width: 100%; border-radius: 10px; border: 1px solid var(--line); display: block; }

/* 楷体引文 + 印章 */
.quote {
  font-family: "KaiTi", "STKaiti", "Kaiti SC", serif;
  font-size: 21px; color: var(--ink-dark);
  text-align: center; max-width: 34em; margin: 0 auto 18px;
}
.quote-src { text-align: center; }
.seal {
  display: inline-block;
  font-family: "KaiTi", "STKaiti", serif;
  color: var(--seal); border: 2px solid var(--seal); border-radius: 4px;
  padding: 5px 7px; line-height: 1.15; font-size: 14px;
  letter-spacing: 3px; transform: rotate(-3deg);
  writing-mode: vertical-rl;
}

/* 规格表 */
.spec { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: 10px; }
.spec td { padding: 14px 16px; border-bottom: 1px solid var(--line); font-size: 15px; }
.spec tr:last-child td { border-bottom: none; }
.spec td:first-child { color: var(--muted); width: 220px; }

/* 联系页 */
.c-list { max-width: 640px; }
.c-list .row { padding: 18px 0; border-bottom: 1px solid var(--line); display: flex; gap: 24px; }
.c-list .k { color: var(--muted); width: 110px; flex-shrink: 0; }
.note { font-size: 13px; color: var(--muted); margin-top: 20px; }

/* 页脚 */
footer { border-top: 1px solid var(--line); padding: 28px 0; font-size: 13px; color: var(--muted); }
footer .wrap { display: flex; flex-direction: column; gap: 6px; }
footer a { color: var(--muted); }
footer a:hover { color: var(--ink); }

/* 响应式 */
@media (max-width: 760px) {
  .hero { padding: 44px 0 36px; }
  .hero .wrap { flex-direction: column; }
  .hero-img { max-width: 78%; }
  h1 { font-size: 26px; }
  .grid3, .grid4, .grid2 { grid-template-columns: 1fr; }
  nav a { margin-left: 14px; font-size: 13px; }
  .seal { writing-mode: horizontal-tb; }
}