/* ==========================================================================
   menhu.css —— 门户网站私有样式
   hero / 栏目树状结构 / 三核心模块 / 左文右图角色分工 / 纸白CTA
   ========================================================================== */

/* ---------- hero ---------- */
.mh-hero {
  position: relative;
  margin-top: -72px;
  padding-top: 72px;
  min-height: 44vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.mh-hero-bg { position: absolute; inset: 0; z-index: -2; }
.mh-hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.mh-hero-mask {
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(35,36,31,.3) 0%, rgba(35,36,31,.85) 100%);
}
.mh-hero-inner { padding: 76px 24px 44px; color: #fff; }
.mh-crumb { color: rgba(246,242,233,.75); padding: 0 0 14px; }
.mh-crumb a { color: rgba(246,242,233,.75); }
.mh-crumb .current { color: #cfe0c9; }
.mh-hero h1 { color: #fff; font-size: 2.3rem; margin-bottom: 10px; max-width: 680px; }
.mh-hero-inner > p { color: rgba(246,242,233,.85); max-width: 560px; }

/* ---------- 栏目结构树 ---------- */
.mh-structure { background: var(--paper); }
.mh-tree { text-align: center; }
.mh-tree-root {
  display: inline-block;
  padding: 12px 44px;
  background: var(--bamboo);
  color: #fff;
  border-radius: var(--radius);
  font-family: var(--font-title);
  font-size: 1.1rem;
}
.mh-tree-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 30px;
  padding-top: 26px;
  border-top: 2px solid var(--bamboo-light);
}
.mh-tree-col {
  background: var(--rice);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}
.mh-tree-col h5 {
  color: var(--bamboo-deep);
  padding-bottom: 10px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.mh-tree-col ul li {
  font-size: .85rem;
  color: var(--ink-soft);
  padding: 5px 0;
}
.mh-tree-note { text-align: center; font-size: .85rem; margin-top: 24px; max-width: 640px; margin-left: auto; margin-right: auto; }
@media (max-width: 992px) { .mh-tree-cols { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .mh-tree-cols { grid-template-columns: 1fr; } }

/* ---------- 三大核心模块 ---------- */
.mh-modules { background: var(--rice); }

/* ---------- 多角色协作 ---------- */
.mh-roles { background: var(--paper); }
.mh-roles-grid { align-items: center; gap: 44px; }
.mh-roles-text .bar { margin: 12px 0 18px; }
.mh-roles-list { margin: 14px 0 18px; }
.mh-roles-list li {
  padding: 9px 0 9px 20px;
  position: relative;
  font-size: .92rem;
  color: var(--ink-soft);
  border-bottom: 1px dashed var(--line);
}
.mh-roles-list li::before {
  content: "";
  position: absolute; left: 0; top: 16px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--bamboo);
}
.mh-roles-list strong { color: var(--ink); }
.mh-roles-img img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.mh-roles-img figcaption { padding: 10px 4px 0; font-size: .85rem; }

/* ---------- CTA 纸白引用框 ---------- */
.mh-cta { padding: 76px 0 90px; background: var(--rice); }
.mh-cta-inner {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 52px 36px;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.mh-cta-quote {
  font-family: var(--font-title);
  font-size: 1.15rem;
  color: var(--bamboo-deep);
  margin-bottom: 18px;
}
.mh-cta-inner h2 { margin-bottom: 10px; }
.mh-cta-line {
  display: flex; gap: 24px; justify-content: center; flex-wrap: wrap;
  font-size: .9rem;
  margin: 18px 0 24px;
}
.mh-cta-line a { font-weight: 700; }