/* ══════════════════════════════════════
   1. CSS 变量（统一在这里改颜色）
══════════════════════════════════════ */
:root {
  --color-primary:  #c8860a;
  --color-dark:     #1a1a1a;
  --color-text:     #333;
  --header-height:  70px;
  --header-bg:      #ffffff;
}

/* ══════════════════════════════════════
   2. Reset & Base
══════════════════════════════════════ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--color-text); line-height: 1.6; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; }

/* ══════════════════════════════════════
   3. Layout
══════════════════════════════════════ */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: 800px; }
.section { padding: 5rem 0; }
.section--gray { background: #f8f9fa; }
.section-title { font-size: 2rem; text-align: center; margin-bottom: 3rem; }
.section-more { text-align: center; margin-top: 2rem; }

/* ══════════════════════════════════════
   4. Buttons
══════════════════════════════════════ */
.btn { display: inline-block; padding: 0.75rem 1.75rem; border-radius: 4px; font-weight: 600; cursor: pointer; border: 2px solid transparent; transition: all 0.2s; }
.btn--primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn--primary:hover { background: #a86e08; border-color: #a86e08; }
.btn--outline { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn--outline:hover { background: var(--color-primary); color: #fff; }

/* ══════════════════════════════════════
   5. Header
══════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  box-shadow: 0 1px 4px rgba(0,0,0,.08);
  transition: box-shadow .25s;
}
.site-header.is-sticky { box-shadow: 0 2px 12px rgba(0,0,0,.15); }

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: var(--header-height);
}

/* Logo */
.header-logo img { max-width: 170px; height: 40px; display: block; }
.header-logo .logo-text {
  font-size: 1.4rem; font-weight: 800;
  color: var(--color-primary); letter-spacing: .02em;
}

/* 桌面导航 */
.header-nav { flex: 1; }
.nav-list { display: flex; gap: 2px; list-style: none; margin: 0; padding: 0; }
.nav-link {
  display: flex; align-items: center; gap: 4px;
  padding: 8px 11px;
  font-size: .8rem; font-weight: 700; letter-spacing: .05em;
  color: var(--color-text);
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
  white-space: nowrap;
}
.nav-link:hover,
.nav-link.is-active { color: var(--color-primary); border-bottom-color: var(--color-primary); }

/* 下拉菜单 */
.has-dropdown { position: relative; }
.dropdown-menu {
  display: none; position: absolute;
  top: calc(100% + 4px); left: 0; min-width: 210px;
  background: var(--color-dark); border-radius: 4px;
  list-style: none; margin: 0; padding: 8px 0;
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
}
.has-dropdown:hover .dropdown-menu { display: block; }
.dropdown-menu a {
  display: block; padding: 9px 18px;
  color: #ccc; font-size: .83rem;
  transition: background .15s, color .15s;
}
.dropdown-menu a:hover { background: #333; color: #fff; }
.dropdown-arrow { transition: transform .2s; }
.has-dropdown:hover .dropdown-arrow { transform: rotate(180deg); }

/* Get Quote 按钮 */
.btn-quote {
  white-space: nowrap; padding: 10px 22px;
  background: var(--color-primary); color: #fff;
  border: none; border-radius: 4px;
  font-size: .875rem; font-weight: 700; cursor: pointer;
  transition: background .2s, transform .1s;
}
.btn-quote:hover { background: #a86e08; transform: translateY(-1px); }

/* 汉堡按钮 */
.mobile-menu-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer;
  padding: 4px; margin-left: auto;
}
.mobile-menu-toggle span {
  display: block; width: 24px; height: 2px;
  background: #222; border-radius: 2px;
  transition: transform .25s, opacity .25s;
}
.mobile-menu-toggle.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-toggle.is-active span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端菜单 */
.mobile-nav { display: none; background: #fff; border-top: 1px solid #eee; padding: 8px 0; }
.mobile-nav.is-open { display: block; }
.mobile-nav-list { list-style: none; margin: 0; padding: 0; }
.mobile-nav-list > li > a,
.mobile-dropdown-toggle {
  display: block; padding: 12px 20px;
  font-size: .9rem; font-weight: 600; color: #222;
  border: none; background: none; width: 100%; text-align: left; cursor: pointer;
}
.mobile-nav-list > li > a:hover,
.mobile-dropdown-toggle:hover { color: var(--color-primary); }
.mobile-dropdown { display: none; background: #f7f7f7; list-style: none; padding: 0; margin: 0; }
.mobile-dropdown.is-open { display: block; }
.mobile-dropdown a { display: block; padding: 10px 32px; font-size: .85rem; color: #555; }
.mobile-dropdown a:hover { color: var(--color-primary); }

/* ══════════════════════════════════════
   6. Modal（Get Quote 弹窗）
══════════════════════════════════════ */
.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,.55); z-index: 2000;
  align-items: center; justify-content: center;
}
.modal-overlay.is-open { display: flex; }
.modal-box {
  position: relative; background: #fff; border-radius: 8px;
  width: min(900px, 95vw); max-height: 90vh; overflow-y: auto;
}
.modal-close {
  position: absolute; top: 12px; right: 16px;
  background: none; border: none; font-size: 1.25rem; cursor: pointer; color: #666; z-index: 1;
}
.modal-content { display: flex; }
.modal-left {
  flex: 1; padding: 40px 36px;
  background: #1a3a5c; color: #fff;
  border-radius: 8px 0 0 8px;
}
.modal-left h4 { font-size: 1.4rem; margin: 0 0 8px; }
.modal-left p  { font-size: .9rem; opacity: .85; margin: 0 0 24px; }
.modal-right { width: 300px; flex-shrink: 0; border-radius: 0 8px 8px 0; overflow: hidden; }
.modal-right img { width: 100%; height: 100%; object-fit: cover; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-grid input {
  width: 100%; padding: 10px 14px;
  border: 1px solid rgba(255,255,255,.3); border-radius: 4px;
  background: rgba(255,255,255,.1); color: #fff; font-size: .9rem; box-sizing: border-box;
}
.form-grid input::placeholder { color: rgba(255,255,255,.6); }
.btn-submit {
  width: 100%; padding: 11px;
  background: #fff; color: #1a3a5c;
  border: none; border-radius: 4px; font-weight: 700; cursor: pointer;
}
.btn-submit:hover { background: #e8e8e8; }
.form-consent { font-size: .75rem; opacity: .7; margin-top: 12px; }
.form-consent a { color: #fff; }

/* ══════════════════════════════════════
   7. Hero
══════════════════════════════════════ */
.hero { background: linear-gradient(135deg, #1a3a5c 0%, #c8860a 100%); color: #fff; padding: 7rem 0; text-align: center; }
.hero h1 { font-size: 3rem; margin-bottom: 1rem; }
.hero p { font-size: 1.25rem; margin-bottom: 2rem; opacity: 0.9; }
.hero-actions { display: flex; gap: 1rem; justify-content: center; }
.hero .btn--outline { color: #fff; border-color: #fff; }
.hero .btn--outline:hover { background: #fff; color: var(--color-primary); }

/* Page Hero */
.page-hero { background: #f5f0e8; padding: 4rem 0; text-align: center; }
.page-hero h1 { font-size: 2.5rem; color: var(--color-primary); }
.page-hero p { font-size: 1.1rem; color: #666; margin-top: 0.5rem; }

/* ══════════════════════════════════════
   8. Cards
══════════════════════════════════════ */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 2rem; }
.card { background: #fff; border: 1px solid #eee; border-radius: 8px; padding: 2rem; transition: box-shadow 0.2s; }
.card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.08); }
.card h3 { margin: 0.5rem 0; font-size: 1.2rem; }
.card h3 a:hover { color: var(--color-primary); }
.card p { color: #666; margin-bottom: 1.5rem; }
.card-date, .card__date { font-size: 0.85rem; color: #999; }

/* Tag */
.tag { display: inline-block; background: #f5ede0; color: var(--color-primary); padding: 0.2rem 0.75rem; border-radius: 20px; font-size: 0.8rem; font-weight: 600; margin-bottom: 0.5rem; }

/* ══════════════════════════════════════
   9. Product Detail
══════════════════════════════════════ */
.product-detail { padding: 4rem 0; }
.product-info h1 { font-size: 2.5rem; margin: 1rem 0; }
.product-desc { font-size: 1.1rem; color: #555; margin-bottom: 2rem; }
.product-actions { display: flex; gap: 1rem; }
.product-content { margin-top: 3rem; border-top: 1px solid #eee; padding-top: 3rem; }
.product-content h2 { margin: 2rem 0 1rem; }
.product-content table { width: 100%; border-collapse: collapse; margin: 1rem 0; }
.product-content th, .product-content td { border: 1px solid #ddd; padding: 0.75rem; text-align: left; }
.product-content th { background: #f8f9fa; }

/* ══════════════════════════════════════
   10. Post Detail
══════════════════════════════════════ */
.post-detail { padding: 4rem 0; }
.post-header { margin-bottom: 3rem; }
.post-header h1 { font-size: 2.2rem; margin: 1rem 0; }
.post-meta { color: #999; font-size: 0.9rem; display: flex; gap: 1rem; }
.post-content h2 { margin: 2rem 0 1rem; }
.post-content p { margin-bottom: 1rem; color: #444; }
.post-footer { margin-top: 3rem; border-top: 1px solid #eee; padding-top: 2rem; }

/* ══════════════════════════════════════
   11. About
══════════════════════════════════════ */
.about-block { margin-bottom: 4rem; }
.about-block h2 { font-size: 1.8rem; margin-bottom: 1rem; color: var(--color-primary); }

/* ══════════════════════════════════════
   12. Contact
══════════════════════════════════════ */
.contact-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 4rem; }
.contact-info h2 { font-size: 1.4rem; margin-bottom: 1rem; color: var(--color-primary); }
.contact-list { display: flex; flex-direction: column; gap: 0.75rem; margin-bottom: 2rem; color: #555; }
.contact-list a:hover { color: var(--color-primary); }
.contact-form h2 { font-size: 1.4rem; margin-bottom: 1.5rem; color: var(--color-primary); }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-weight: 600; margin-bottom: 0.4rem; color: #444; }
.form-group input, .form-group textarea { width: 100%; padding: 0.75rem; border: 1px solid #ddd; border-radius: 4px; font-size: 1rem; transition: border-color 0.2s; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--color-primary); }

/* ══════════════════════════════════════
   13. Footer
══════════════════════════════════════ */
.site-footer { background: #1a1a1a; color: #ccc; padding: 4rem 0 2rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.footer-col h3 { color: #fff; font-size: 1.3rem; margin-bottom: 1rem; }
.footer-col h4 { color: #fff; margin-bottom: 1rem; }
.footer-col ul { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #333; padding-top: 1.5rem; text-align: center; font-size: 0.85rem; color: #666; }

/* ══════════════════════════════════════
   14. Responsive
══════════════════════════════════════ */
@media (max-width: 1024px) {
  .header-nav, .header-actions { display: none; }
  .mobile-menu-toggle { display: flex; }
  .modal-right { display: none; }
  .modal-left { border-radius: 8px; }
  .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hero h1 { font-size: 2rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }
}



/* ══════════════════════════════════════
   15. 冻结页头
══════════════════════════════════════ */
/* style.css 中 */
@view-transition {
  navigation: auto;
}

.site-header {
  view-transition-name: site-header;
}

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.15s;
}