/**
 * CN 低代码品牌学习中心 — 统一二级导航 + 页面壳层
 */
@import url('../../styles/mobile-guard.css?v=20260614');

/* 无 common.css 的页面：下拉菜单基础 */
.dropdown {
  position: relative;
  display: inline-block;
}
.dropdown-content {
  display: none;
  opacity: 0;
  visibility: hidden;
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  min-width: 220px;
  max-width: calc(100vw - 24px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #e8e8e8;
  padding: 8px 0;
  pointer-events: none;
}
.dropdown:hover .dropdown-content,
.dropdown.open .dropdown-content {
  display: block;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* 顶栏 + 二级导航 + 面包屑 — 高度由 platform-nav-sync.js 写入 --platform-page-offset */
body:has(.platform-subnav) {
  padding-top: var(--platform-page-offset, 140px);
  overflow-x: clip;
  background: #f9fafb !important;
}

body:has(.platform-subnav)::before {
  display: none !important;
}

.platform-subnav {
  position: fixed;
  top: var(--platform-navbar-h, 55px);
  left: 0;
  right: 0;
  z-index: 40;
  background: linear-gradient(90deg, #059669, #10b981);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
}

.platform-subnav-desktop {
  display: none;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
  gap: 0.25rem;
  padding: 0.5rem 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.platform-subnav-desktop::-webkit-scrollbar {
  display: none;
}

.platform-subnav-link {
  flex-shrink: 0;
  padding: 0.45rem 0.9rem;
  border-radius: 0.5rem;
  color: rgba(255, 255, 255, 0.95);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease;
  min-width: 0;
  min-height: 0;
}

.platform-subnav-link:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
}

.platform-subnav-link.is-active {
  background: rgba(255, 255, 255, 0.24);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
}

.platform-subnav-back {
  opacity: 0.9;
}

.platform-subnav-mobile {
  display: block;
  padding: 0.4rem 0;
}

.platform-subnav-select {
  width: 100%;
  padding: 0.45rem 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 16px;
}

.platform-subnav .container {
  max-width: 80rem;
  margin-left: auto;
  margin-right: auto;
}

/* 固定面包屑（不依赖 Tailwind .fixed） */
.platform-breadcrumb,
body:has(.platform-subnav) nav[aria-label="Breadcrumb"].fixed {
  position: fixed;
  left: 0;
  right: 0;
  top: var(--platform-stack-top, 102px);
  z-index: 39;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid #e5e7eb;
}

.platform-breadcrumb .container,
.platform-breadcrumb > div {
  max-width: 80rem;
  margin-left: auto;
  margin-right: auto;
  padding: 0.5rem 1rem;
}

.platform-breadcrumb ol,
.platform-breadcrumb .flex {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.875rem;
  line-height: 1.5;
}

.platform-hero {
  padding-top: 1.25rem !important;
}

.platform-nav-pill {
  position: sticky;
  top: var(--platform-stack-top, 102px);
  z-index: 38;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* 主体 section 内 container 统一居中（与顶栏 80rem 对齐） */
body:has(.platform-subnav) section > .container {
  width: 100%;
  max-width: 80rem;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .platform-subnav-desktop {
    display: flex;
  }
  .platform-subnav-mobile {
    display: none;
  }
}

@media (max-width: 767px) {
  body:has(.platform-subnav) {
    padding-top: var(--platform-page-offset, 132px);
  }

  body:has(.platform-subnav) h1 {
    font-size: clamp(1.25rem, 5vw, 1.75rem) !important;
    line-height: 1.35 !important;
  }

  body:has(.platform-subnav) h2 {
    font-size: clamp(1.1rem, 4vw, 1.4rem) !important;
    line-height: 1.4 !important;
  }

  body:has(.platform-subnav) h3 {
    font-size: 1rem !important;
  }

  body:has(.platform-subnav) p,
  body:has(.platform-subnav) li {
    font-size: 0.875rem !important;
    line-height: 1.65 !important;
  }

  body:has(.platform-subnav) pre,
  body:has(.platform-subnav) .overflow-x-auto {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  body:has(.platform-subnav) .container {
    padding-left: 12px !important;
    padding-right: 12px !important;
  }
}