/* 全站共用：仅导航 + 简单页（Home / About / Contact / Products 列表） */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 9999;
  background: #fff;
  border-bottom: 1px solid #ddd;
  font-family: "DM Sans", system-ui, sans-serif;
}

.site-nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #111;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
}

.site-nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav-links a {
  color: #333;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}

.site-nav-links a:hover {
  color: #1a5c45;
}

.site-nav-links a.active {
  color: #1a5c45;
  font-weight: 600;
}

.site-nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
}

/* 产品页（原 .html 宣传册）顶部留出导航高度 */
body:has(.site-nav) {
  padding-top: 0;
}

@media (max-width: 700px) {
  .site-nav-toggle { display: block; }
  .site-nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-bottom: 1px solid #ddd;
    padding: 12px 20px;
    gap: 0;
  }
  .site-nav-links.open { display: flex; }
  .site-nav-links a { padding: 12px 0; border-bottom: 1px solid #eee; }
  .site-nav { position: relative; }
  .site-nav-inner { position: relative; }
}

/* ── 简单内容页 index / about / contact / products ── */
:root {
  --green: #1a5c45;
  --muted: #555;
  --line: #ddd;
  --max: 880px;
}

.simple-page {
  font-family: "DM Sans", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: #222;
  margin: 0;
}

.simple-wrap {
  width: min(100% - 40px, var(--max));
  margin-inline: auto;
}

.simple-page main { padding: 48px 0 64px; }

/* Home — intro text + building image */
.home-page main.home-body {
  padding: 48px 0 64px;
}

.home-intro-grid {
  display: grid;
  grid-template-columns: 1fr min(320px, 38%);
  gap: 36px;
  align-items: center;
}

.home-intro-text .lead {
  max-width: none;
}

.home-intro-visual {
  margin: 0;
}

.home-intro-visual img {
  display: block;
  width: 100%;
  border-radius: 4px;
  object-fit: cover;
  aspect-ratio: 1 / 1;
}

.home-links-sep {
  margin: 0 8px;
  color: var(--muted);
}

@media (max-width: 767px) {
  .home-intro-grid {
    grid-template-columns: 1fr;
  }

  .home-intro-visual img {
    aspect-ratio: auto;
    max-height: 280px;
    object-fit: contain;
  }
}

.simple-page h1 {
  font-size: 1.75rem;
  margin-bottom: 12px;
  color: #111;
}

.simple-page .lead {
  color: var(--muted);
  margin-bottom: 16px;
  max-width: 560px;
}

.home-links {
  margin: 8px 0 28px;
}

.home-products-teaser {
  margin-bottom: 0;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.page-link {
  color: var(--green);
  font-weight: 500;
  text-decoration: none;
}

.page-link:hover {
  text-decoration: underline;
}

.product-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 8px;
}

.product-list a {
  display: block;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: #222;
  text-decoration: none;
}

.product-list a:hover {
  border-color: var(--green);
}

.product-list h2 {
  font-size: 1.1rem;
  color: var(--green);
  margin-bottom: 8px;
}

.product-list p {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0;
}

.simple-footer {
  border-top: 1px solid var(--line);
  padding: 24px 0;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}

.simple-footer a { color: var(--green); }

.prose p { margin-bottom: 14px; color: var(--muted); }
.prose ul { margin: 0 0 16px 1.2rem; color: var(--muted); }

.contact-email {
  font-size: 1.2rem;
  font-weight: 600;
}

@media (max-width: 600px) {
  .product-list { grid-template-columns: 1fr; }
}