/* ============================================================
   layout.css — 顶部导航 / 二级菜单 / 页脚 / 面包屑 / Hero / CTA横幅
   ============================================================ */

/* ---------------- 顶部公告条 ---------------- */
.topbar {
  background: var(--c-dark-900);
  color: var(--c-dark-text);
  font-size: var(--fs-sm);
  border-bottom: 1px solid var(--c-dark-line);
}
.topbar .container { display: flex; align-items: center; justify-content: space-between; height: 40px; gap: 16px; }
.topbar-left { display: flex; align-items: center; gap: 8px; }
.topbar-left svg { width: 15px; height: 15px; color: var(--c-cyan); flex-shrink: 0; }
.topbar-right { display: flex; align-items: center; gap: 22px; }
.topbar a:hover { color: #fff; }
.topbar .tel { display: flex; align-items: center; gap: 7px; font-weight: 600; color: #fff; }
.topbar .tel svg { width: 15px; height: 15px; color: var(--c-cyan); }
@media (max-width: 900px) { .topbar { display: none; } }

/* ---------------- 主导航 ---------------- */
.navbar {
  position: sticky; top: 0; z-index: 800;
  background: rgba(255,255,255,.86);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--c-line-soft);
  transition: box-shadow .3s var(--ease), background .3s var(--ease);
}
.navbar.scrolled { box-shadow: 0 4px 22px rgba(10,22,40,.08); background: rgba(255,255,255,.96); }
.nav-inner { display: flex; align-items: center; height: var(--nav-h); gap: 20px; }

.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 11px;
  background: var(--g-brand); color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 16px rgba(22,104,220,.30); flex-shrink: 0;
}
.brand-mark svg { width: 22px; height: 22px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-size: 17px; font-weight: 800; color: var(--c-ink); letter-spacing: -.01em; }
.brand-sub { font-size: 10px; font-weight: 600; color: var(--c-text-mute); letter-spacing: .10em; text-transform: uppercase; }

/* 主菜单 */
.nav-menu { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.nav-item { position: relative; }
.nav-link {
  display: flex; align-items: center; gap: 5px;
  height: 40px; padding: 0 14px; border-radius: var(--r-sm);
  font-size: var(--fs-base); font-weight: 500; color: var(--c-text);
  transition: all .2s var(--ease);
}
.nav-link svg { width: 14px; height: 14px; transition: transform .25s var(--ease); color: var(--c-text-mute); }
.nav-link:hover, .nav-item:hover .nav-link { color: var(--c-primary); background: var(--c-primary-light); }
.nav-item:hover .nav-link svg { transform: rotate(180deg); color: var(--c-primary); }
.nav-link.active { color: var(--c-primary); font-weight: 600; }

/* 二级下拉 */
.dropdown {
  position: absolute; top: calc(100% + 10px); left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 230px; background: #fff;
  border: 1px solid var(--c-line); border-radius: var(--r-md);
  box-shadow: var(--sh-lg); padding: 10px;
  opacity: 0; visibility: hidden; transition: all .24s var(--ease);
  z-index: 810;
}
.nav-item:hover .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown.wide { min-width: 560px; display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 14px; }
.dropdown.wide.cols-3 { grid-template-columns: repeat(3, 1fr); }
.drop-link {
  display: flex; gap: 11px; padding: 10px 12px; border-radius: var(--r-sm);
  transition: background .18s var(--ease);
}
.drop-link:hover { background: var(--c-bg-soft); }
.drop-link .ico { width: 36px; height: 36px; border-radius: 9px; }
.drop-link .ico svg { width: 18px; height: 18px; }
.drop-tt { font-size: var(--fs-sm); font-weight: 600; color: var(--c-ink); margin-bottom: 1px; }
.drop-dd { font-size: var(--fs-xs); color: var(--c-text-mute); line-height: 1.5; }
.drop-link:hover .drop-tt { color: var(--c-primary); }
.drop-head { grid-column: 1/-1; font-size: var(--fs-xs); font-weight: 700; letter-spacing: .08em;
             text-transform: uppercase; color: var(--c-text-mute); padding: 6px 12px 4px; }

/* 导航右侧按钮 */
.nav-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-actions .btn { height: 40px; padding: 0 20px; font-size: var(--fs-sm); }

/* 汉堡按钮 */
.burger { display: none; width: 42px; height: 42px; border-radius: var(--r-sm);
          align-items: center; justify-content: center; flex-direction: column; gap: 5px; }
.burger span { display: block; width: 20px; height: 2px; background: var(--c-ink); border-radius: 2px;
               transition: all .28s var(--ease); }
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; transform: scaleX(.4); }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端抽屉 */
.drawer {
  position: fixed; inset: var(--nav-h) 0 0; background: #fff; z-index: 795;
  overflow-y: auto; padding: 18px; transform: translateX(100%);
  transition: transform .3s var(--ease); display: none;
}
.drawer.open { transform: none; }
.drawer-group { border-bottom: 1px solid var(--c-line-soft); }
.drawer-toggle {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; padding: 15px 4px; font-size: var(--fs-md); font-weight: 600; color: var(--c-ink);
  text-align: left;
}
.drawer-toggle svg { width: 16px; height: 16px; color: var(--c-text-mute); transition: transform .25s var(--ease); }
.drawer-group.open .drawer-toggle svg { transform: rotate(180deg); color: var(--c-primary); }
.drawer-group.open .drawer-toggle { color: var(--c-primary); }
.drawer-sub { max-height: 0; overflow: hidden; transition: max-height .34s var(--ease); }
.drawer-group.open .drawer-sub { max-height: 600px; }
.drawer-sub a { display: block; padding: 11px 4px 11px 16px; font-size: var(--fs-base); color: var(--c-text-sub);
                border-left: 2px solid var(--c-line); margin-left: 4px; }
.drawer-sub a:hover { color: var(--c-primary); border-color: var(--c-primary); }
.drawer-cta { display: grid; gap: 10px; margin-top: 22px; }
.drawer-plain { display: block; padding: 15px 4px; font-size: var(--fs-md); font-weight: 600; color: var(--c-ink);
                border-bottom: 1px solid var(--c-line-soft); }

@media (max-width: 1199px) {
  .nav-menu .nav-link { padding: 0 10px; font-size: var(--fs-sm); }
  .dropdown.wide { min-width: 460px; }
}
@media (max-width: 991px) {
  .nav-menu, .nav-actions .btn-primary { display: none; }
  .burger { display: flex; margin-left: auto; }
  .drawer { display: block; }
}

/* ---------------- 面包屑 ---------------- */
.crumb-bar { background: var(--c-bg-soft); border-bottom: 1px solid var(--c-line); }
.crumb { display: flex; align-items: center; gap: 9px; height: 52px; font-size: var(--fs-sm); color: var(--c-text-mute); flex-wrap: wrap; }
.crumb a { color: var(--c-text-sub); }
.crumb a:hover { color: var(--c-primary); }
.crumb svg { width: 13px; height: 13px; opacity: .5; flex-shrink: 0; }
.crumb .cur { color: var(--c-ink); font-weight: 600; }

/* ---------------- 页头 Banner（内页） ---------------- */
.page-hero { position: relative; background: var(--g-dark); color: #fff; padding: var(--s-16) 0 var(--s-12); overflow: hidden; }
.page-hero::before { content: ""; position: absolute; inset: 0; background: var(--g-glow); pointer-events: none; }
.page-hero::after { content: ""; position: absolute; inset: 0; background-image:
  linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
  linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 56px 56px; mask-image: radial-gradient(70% 100% at 50% 0%, #000, transparent); pointer-events: none; }
.page-hero .container { position: relative; z-index: 1; }
.page-hero .sec-tag { background: rgba(19,194,194,.14); color: #4ADE9B; }
.page-hero h1 { color: #fff; font-size: var(--fs-5xl); margin-bottom: var(--s-4); }
.page-hero .lead { font-size: var(--fs-lg); color: var(--c-dark-text); max-width: 720px; }
.page-hero-meta { display: flex; gap: 24px; flex-wrap: wrap; margin-top: var(--s-6); font-size: var(--fs-sm); color: var(--c-dark-text-dim); }
.page-hero-meta span { display: flex; align-items: center; gap: 7px; }
.page-hero-meta svg { width: 15px; height: 15px; color: var(--c-cyan); }

/* 内页 Hero 右侧数据卡 */
.page-hero-split { display: grid; grid-template-columns: 1.15fr .85fr; gap: var(--s-12); align-items: center; }
@media (max-width: 991px) { .page-hero-split { grid-template-columns: 1fr; gap: var(--s-8); } }

/* ---------------- 底部 CTA 横幅 ---------------- */
.cta-band { position: relative; background: var(--g-dark); color: #fff; padding: var(--s-16) 0; overflow: hidden; }
.cta-band::before { content: ""; position: absolute; inset: 0; background: var(--g-glow); }
.cta-band::after { content: ""; position: absolute; inset: 0; background-image:
  linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
  linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 48px 48px; mask-image: radial-gradient(60% 100% at 50% 50%, #000, transparent); }
.cta-band .container { position: relative; z-index: 1; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--s-10); flex-wrap: wrap; }
.cta-inner h2 { color: #fff; font-size: var(--fs-3xl); margin-bottom: 10px; }
.cta-inner p { color: var(--c-dark-text); font-size: var(--fs-md); max-width: 560px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------------- 页脚 ---------------- */
.site-footer { background: var(--c-dark-900); color: var(--c-dark-text); padding-top: var(--s-20); font-size: var(--fs-sm); }
.foot-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1.3fr; gap: var(--s-10); padding-bottom: var(--s-12); }
.foot-brand .brand-name { color: #fff; }
.foot-brand .brand-sub { color: var(--c-dark-text-dim); }
.foot-about { margin-top: var(--s-5); line-height: 1.85; color: var(--c-dark-text-dim); max-width: 330px; }
.foot-contact { margin-top: var(--s-5); display: grid; gap: 10px; }
.foot-contact div { display: flex; align-items: flex-start; gap: 9px; color: var(--c-dark-text-dim); }
.foot-contact svg { width: 15px; height: 15px; color: var(--c-cyan); flex-shrink: 0; margin-top: 4px; }
.foot-contact .num { font-size: var(--fs-xl); font-weight: 800; color: #fff; letter-spacing: -.01em; }
.foot-col h4 { color: #fff; font-size: var(--fs-base); font-weight: 700; margin-bottom: var(--s-5); }
.foot-col ul { display: grid; gap: 11px; }
.foot-col a { color: var(--c-dark-text-dim); }
.foot-col a:hover { color: #fff; }

.foot-qr { display: flex; gap: 14px; }
.qr-box { text-align: center; }
.qr-code {
  width: 88px; height: 88px; border-radius: var(--r-sm); background: #fff; padding: 6px;
  display: flex; align-items: center; justify-content: center;
}
.qr-code svg { width: 100%; height: 100%; }
.qr-code img { width: 100%; height: 100%; border-radius: calc(var(--r-sm) - 3px); display: block; object-fit: contain; }
.qr-box span { display: block; margin-top: 8px; font-size: var(--fs-xs); color: var(--c-dark-text-dim); }

.foot-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-top: var(--s-5); }
.foot-badge { display: flex; align-items: center; gap: 6px; padding: 7px 12px; border-radius: var(--r-xs);
              background: rgba(255,255,255,.05); border: 1px solid var(--c-dark-line);
              font-size: var(--fs-xs); color: var(--c-dark-text); }
.foot-badge svg { width: 14px; height: 14px; color: var(--c-cyan); }

.foot-friend { border-top: 1px solid var(--c-dark-line); padding: var(--s-6) 0; }
.foot-friend .lbl { color: var(--c-dark-text-dim); font-weight: 600; margin-right: 12px; }
.foot-friend a { color: var(--c-dark-text-dim); margin-right: 18px; font-size: var(--fs-xs); }
.foot-friend a:hover { color: #fff; }

.foot-bottom { border-top: 1px solid var(--c-dark-line); padding: var(--s-6) 0; }
.foot-bottom .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
                          color: var(--c-dark-text-dim); font-size: var(--fs-xs); }
.foot-legal { display: flex; gap: 18px; flex-wrap: wrap; }
.foot-legal a:hover { color: #fff; }

@media (max-width: 1199px) { .foot-top { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; } .foot-col:last-child { grid-column: 1/-1; } }
@media (max-width: 767px) {
  .foot-top { grid-template-columns: 1fr 1fr; gap: var(--s-8); }
  .foot-brand { grid-column: 1/-1; }
  .foot-about { max-width: none; }
  .foot-bottom .container { flex-direction: column; align-items: flex-start; }
}

/* ---------------- 侧栏 / 目录（详情页） ---------------- */
.with-aside { display: grid; grid-template-columns: 1fr 300px; gap: var(--s-12); align-items: start; }
@media (max-width: 991px) { .with-aside { grid-template-columns: 1fr; } }
.aside-sticky { position: sticky; top: calc(var(--nav-h) + 24px); }
.aside-card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-lg); padding: var(--s-6); }
.aside-card + .aside-card { margin-top: var(--s-5); }
.aside-tt { font-size: var(--fs-base); font-weight: 700; color: var(--c-ink); margin-bottom: var(--s-4);
            padding-bottom: var(--s-3); border-bottom: 1px solid var(--c-line-soft); }
.aside-nav { display: grid; gap: 2px; }
.aside-nav a { display: block; padding: 9px 12px; border-radius: var(--r-xs); font-size: var(--fs-sm);
               color: var(--c-text-sub); border-left: 2px solid transparent; }
.aside-nav a:hover { background: var(--c-bg-soft); color: var(--c-primary); }
.aside-nav a.active { background: var(--c-primary-light); color: var(--c-primary); font-weight: 600; }
.aside-cta { background: var(--g-dark); border: none; color: #fff; text-align: center; position: relative; overflow: hidden; }
.aside-cta::before { content:""; position:absolute; inset:0; background: var(--g-glow); }
.aside-cta > * { position: relative; z-index: 1; }
.aside-cta h4 { color: #fff; font-size: var(--fs-lg); margin-bottom: 8px; }
.aside-cta p { color: var(--c-dark-text); font-size: var(--fs-sm); margin-bottom: var(--s-5); }

/* ---------------- 移动端底部快捷栏 ---------------- */
.mobile-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 850; display: none;
  background: rgba(255,255,255,.96); backdrop-filter: blur(14px);
  border-top: 1px solid var(--c-line); padding: 8px 12px;
  grid-template-columns: 1fr 1fr 1.3fr; gap: 8px;
}
.mobile-bar a { display: flex; flex-direction: column; align-items: center; gap: 3px; font-size: 11px; color: var(--c-text-sub); padding: 6px 0; }
.mobile-bar a svg { width: 19px; height: 19px; color: var(--c-primary); }
.mobile-bar .mb-cta { background: var(--g-brand); color: #fff; border-radius: var(--r-sm); flex-direction: row;
                      justify-content: center; gap: 6px; font-size: var(--fs-sm); font-weight: 600; }
.mobile-bar .mb-cta svg { color: #fff; }
@media (max-width: 767px) { .mobile-bar { display: grid; } body { padding-bottom: 68px; } }