/* ===========================================================
   index.css — 首页专属样式（低饱和深蓝商务磨砂风格）
   所有样式以 .index- 为前缀，避免污染其他页面
   全局CSS变量从 main.css 继承
   =========================================================== */

/* ===========================================================
   第1屏：主工作台首屏
   ===== 首屏样式区域 START =====
   下方所有规则（面包屑、搜索框、文件夹卡片、快捷栏、统计条）
   均为首页首屏专属，不影响二三屏及页脚
   =========================================================== */

/* --- 1. 面包屑导航（搜索框上方，左对齐） --- */
.index-breadcrumb {
  max-width: 720px;
  margin: 7rem auto 0.5rem;
  padding: 0;
  font-size: 0.8125rem;
  color: var(--color-text-secondary, #94a3b8);
  display: flex;
  align-items: center;
  gap: 6px;
}
.index-breadcrumb-sep {
  color: var(--color-border, #334155);
}
.index-breadcrumb-current {
  color: var(--color-text-tertiary, #cbd5e1);
}

/* --- 2. 地址栏式一体搜索框（放大镜最左侧 + 通栏输入区） --- */
.index-search-bar {
  display: flex;
  align-items: center;
  max-width: 720px;
  height: 52px;
  margin: 0 auto 2.5rem;
  background: var(--color-bg-secondary, #0f172a);
  border: 1px solid var(--color-border, #334155);
  border-radius: var(--radius-lg, 16px);
  transition: border-color 0.25s, box-shadow 0.25s;
  overflow: hidden;
}
.index-search-bar:focus-within {
  border-color: var(--color-accent, #3b82f6);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}
.index-search-icon {
  color: var(--color-text-secondary, #94a3b8);
  font-size: 0.9375rem;
  flex-shrink: 0;
  padding: 0 0 0 1rem;
}
.index-search-input {
  flex: 1;
  height: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--color-text-primary, #f8fafc);
  font-size: 0.875rem;
  font-family: inherit;
  padding-left: 0.625rem;
}
.index-search-input::placeholder {
  color: var(--color-text-secondary, #94a3b8);
}

/* --- 2. 四大板块文件夹卡片（顶部凸起标签） --- */
.index-categories {
  padding: 0 1.5rem 2.5rem;
}
.index-categories-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.index-category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.index-category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2.75rem 1.25rem 1.75rem;
  background: var(--color-bg-secondary, #0f172a);
  border: 1px solid var(--color-border, #334155);
  border-radius: 0 var(--radius-md, 12px) var(--radius-md, 12px) var(--radius-md, 12px);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  position: relative;
  overflow: visible;
}
/* 文件夹凸起标签（60%宽，居中，比卡片主体高8px） */
.index-category-card-folder {
  position: absolute;
  top: -9px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 16px;
  background: var(--color-bg-secondary, #0f172a);
  border: 1px solid var(--color-border, #334155);
  border-bottom: none;
  border-radius: 10px 10px 0 0;
  z-index: 1;
}
.index-category-card-folder::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: -1px;
  right: -1px;
  height: 4px;
  background: var(--color-bg-secondary, #0f172a);
}
/* 卡片hover — 轻微上浮+阴影加深（复用站点卡片交互规范） */
.index-category-card:hover {
  transform: translateY(-6px);
  background: var(--color-bg-tertiary, #1e293b);
  border-color: var(--color-accent, #3b82f6);
  box-shadow: var(--shadow-hover);
}
.index-category-card:hover .index-category-card-folder {
  background: var(--color-bg-tertiary, #1e293b);
  border-color: var(--color-accent, #3b82f6);
}
.index-category-card:hover .index-category-card-folder::after {
  background: var(--color-bg-tertiary, #1e293b);
}

/* 图标 */
.index-category-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  color: var(--color-accent, #3b82f6);
  background: rgba(59, 130, 246, 0.1);
  border-radius: 14px;
  margin-bottom: 1rem;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}
.index-category-title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text-primary, #f8fafc);
  margin-bottom: 0.375rem;
  position: relative;
  z-index: 2;
}
.index-category-desc {
  font-size: 0.8125rem;
  color: var(--color-text-secondary, #94a3b8);
  line-height: 1.5;
  position: relative;
  z-index: 2;
}

/* --- 3. 胶囊型快捷工具栏 --- */
.index-quick-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  max-width: 1200px;
  margin: 0 auto 2rem;
  padding: 0.75rem 1.25rem;
  background: var(--color-bg-secondary, #0f172a);
  border: 1px solid var(--color-border, #334155);
  border-radius: 40px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.index-quick-bar::-webkit-scrollbar { display: none; }

.index-quick-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.625rem;
  min-width: 62px;
  min-height: 44px;
  background: transparent;
  text-decoration: none;
  cursor: pointer;
  flex-shrink: 0;
  border-radius: var(--radius-sm, 8px);
  transition: background 0.2s;
  color: var(--color-text-secondary, #94a3b8);
}
.index-quick-item:hover {
  background: var(--color-bg-tertiary, #1e293b);
  color: var(--color-text-primary, #f8fafc);
}
.index-quick-icon {
  font-size: 1.125rem;
  color: var(--color-accent, #3b82f6);
}
.index-quick-text {
  font-size: 0.6875rem;
  white-space: nowrap;
  line-height: 1.3;
}

/* --- 4. 通栏统计条 --- */
.index-stats-bar {
  background: var(--color-bg-secondary, #0f172a);
  border-top: 1px solid var(--color-border, #334155);
  border-bottom: 1px solid var(--color-border, #334155);
  padding: 1.25rem 1.5rem;
  text-align: center;
}
.index-stats-bar p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary, #94a3b8);
  letter-spacing: 0.03em;
}

/* ===========================================================
   ===== 首屏样式区域 END =====
   以下为第2屏样式，不再修改
   =========================================================== */

/* ===========================================================
   第2屏：分板块热门工具矩阵
   =========================================================== */
.index-screen2 {
  padding: 3rem 1.5rem 4rem;
  background: var(--color-bg-primary, #020617);
}
.index-screen2-inner {
  max-width: 1200px;
  margin: 0 auto;
}

/* 区块标题：常用工具库 */
.index-screen2-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1.5rem;
}
.index-screen2-title::before {
  content: '';
  flex-shrink: 0;
  width: 3px;
  height: 1.25em;
  background: var(--color-accent, #3b82f6);
  border-radius: 2px;
}
.index-screen2-title span {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary, #f8fafc);
}

/* 四列网格布局 */
.index-hot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

/* 每列区块 */
.index-hot-col {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.index-hot-col-header {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-accent, #3b82f6);
  padding: 0.625rem 0.75rem;
  border-bottom: 1px solid var(--color-border, #334155);
  margin-bottom: 0.25rem;
}

/* 热门工具小卡片 */
.index-hot-tool-card {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5rem 0.75rem;
  background: var(--color-bg-secondary, #0f172a);
  border: 1px solid transparent;
  border-radius: var(--radius-sm, 8px);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  min-height: 44px;
}
.index-hot-tool-card:hover {
  background: var(--color-bg-tertiary, #1e293b);
  border-color: var(--color-accent, #3b82f6);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}
.index-hot-tool-card i {
  font-size: 1.125rem;
  color: var(--color-accent, #3b82f6);
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}
.index-hot-tool-card .index-hot-tool-name {
  font-size: 0.8125rem;
  color: var(--color-text-secondary, #94a3b8);
  line-height: 1.4;
  flex: 1;
}

/* 查看全部按钮 */
.index-hot-view-all {
  display: block;
  padding: 0.5rem 0.75rem;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-accent, #3b82f6);
  background: transparent;
  border: 1px dashed var(--color-border, #334155);
  border-radius: var(--radius-sm, 8px);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 0.25rem;
  min-height: 40px;
  line-height: 1.6;
}
.index-hot-view-all:hover {
  background: rgba(59,130,246,0.08);
  border-color: var(--color-accent, #3b82f6);
  color: var(--color-accent-hover, #60a5fa);
}

/* ===========================================================
   第3屏：精选内容 + 页脚
   =========================================================== */
.index-screen3 {
  padding: 0 1.5rem;
  background: var(--color-bg-primary, #020617);
}
.index-screen3-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  padding-bottom: 3rem;
}

.index-screen3-col-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1rem;
}
.index-screen3-col-title::before {
  content: '';
  flex-shrink: 0;
  width: 3px;
  height: 1.1em;
  background: var(--color-accent, #3b82f6);
  border-radius: 2px;
}
.index-screen3-col-title span {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-primary, #f8fafc);
}

/* 精选推荐卡片 */
.index-featured-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--color-bg-secondary, #0f172a);
  border: 1px solid var(--color-border, #334155);
  border-radius: var(--radius-sm, 8px);
  text-decoration: none;
  transition: all 0.2s;
  margin-bottom: 0.625rem;
  min-height: 44px;
}
.index-featured-card:hover {
  border-color: var(--color-accent, #3b82f6);
  background: var(--color-bg-tertiary, #1e293b);
  transform: translateY(-2px);
}
.index-featured-card i {
  font-size: 1.25rem;
  color: var(--color-accent, #3b82f6);
  width: 28px;
  text-align: center;
  flex-shrink: 0;
}
.index-featured-card-info {
  flex: 1;
  min-width: 0;
}
.index-featured-card-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-primary, #f8fafc);
  margin-bottom: 0.125rem;
}
.index-featured-card-desc {
  font-size: 0.75rem;
  color: var(--color-text-secondary, #94a3b8);
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.index-featured-card-ext {
  font-size: 0.6875rem;
  color: var(--color-accent, #3b82f6);
  padding: 0.125rem 0.5rem;
  border: 1px solid rgba(59,130,246,0.25);
  border-radius: 4px;
  flex-shrink: 0;
}

/* 热门提示词条目 */
.index-prompt-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 1rem;
  background: var(--color-bg-secondary, #0f172a);
  border: 1px solid var(--color-border, #334155);
  border-radius: var(--radius-sm, 8px);
  text-decoration: none;
  transition: all 0.2s;
  margin-bottom: 0.625rem;
  min-height: 44px;
}
.index-prompt-item:hover {
  border-color: var(--color-accent, #3b82f6);
  background: var(--color-bg-tertiary, #1e293b);
  transform: translateY(-2px);
}
.index-prompt-rank {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent, #3b82f6);
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}
.index-prompt-name {
  flex: 1;
  font-size: 0.875rem;
  color: var(--color-text-primary, #f8fafc);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.index-prompt-tag {
  font-size: 0.6875rem;
  color: var(--color-text-secondary, #94a3b8);
  padding: 0.1875rem 0.5rem;
  background: var(--color-bg-tertiary, #1e293b);
  border-radius: 4px;
  flex-shrink: 0;
}

/* ===========================================================
   移动端Tab导航（第二屏，仅≤768px显示）
   =========================================================== */
.index-mobile-tabs {
  display: none;
  gap: 0.375rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  margin-bottom: 1rem;
  padding-bottom: 0.25rem;
}
.index-mobile-tabs::-webkit-scrollbar { display: none; }
.index-mobile-tab {
  flex-shrink: 0;
  padding: 0.5rem 1rem;
  background: var(--color-bg-secondary, #0f172a);
  border: 1px solid var(--color-border, #334155);
  border-radius: 20px;
  font-size: 0.8125rem;
  color: var(--color-text-secondary, #94a3b8);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  min-height: 36px;
  font-family: inherit;
}
.index-mobile-tab.active {
  background: var(--color-accent, #3b82f6);
  border-color: var(--color-accent, #3b82f6);
  color: var(--text-on-accent, #fff);
}

/* 移动端单列工具列表 */
.index-hot-mobile-list {
  display: none;
  flex-direction: column;
  gap: 0.5rem;
}

/* ===========================================================
   移动端抽屉导航（仅首页生效）
   =========================================================== */
.index-drawer-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(2, 6, 23, 0.75);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}
.index-drawer-overlay.active { opacity: 1; visibility: visible; }

.index-drawer {
  position: fixed;
  top: 0; right: 0;
  width: 280px;
  height: 100%;
  background: var(--color-bg-secondary, #0f172a);
  z-index: 2000;
  border-left: 1px solid var(--color-border, #334155);
  box-shadow: -4px 0 20px rgba(0,0,0,0.4);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.index-drawer.active { transform: translateX(0); }
.index-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border, #334155);
}
.index-drawer-logo {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-primary, #f8fafc);
}
.index-drawer-close {
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm, 8px);
  color: var(--color-text-secondary, #94a3b8);
  font-size: 1.125rem;
  cursor: pointer;
  transition: all 0.2s;
}
.index-drawer-close:hover {
  background: var(--color-bg-tertiary, #1e293b);
  color: var(--color-text-primary, #f8fafc);
}
.index-drawer-nav { flex: 1; padding: 0.5rem 0; }
.index-drawer-nav a {
  display: flex;
  align-items: center;
  padding: 0.875rem 1.25rem;
  font-size: 0.9375rem;
  color: var(--color-text-secondary, #94a3b8);
  text-decoration: none;
  transition: all 0.2s;
  border-left: 3px solid transparent;
  min-height: 44px;
}
.index-drawer-nav a:hover,
.index-drawer-nav a.active {
  background: var(--color-bg-tertiary, #1e293b);
  color: var(--color-text-primary, #f8fafc);
  border-left-color: var(--color-accent, #3b82f6);
}
.index-drawer-nav a.active {
  color: var(--color-accent, #3b82f6);
  font-weight: 600;
}
.index-drawer-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--color-border, #334155);
  font-size: 0.75rem;
  color: var(--color-text-secondary, #94a3b8);
  text-align: center;
}

/* ===========================================================
   首页底部页脚（复用 header-footer.css 风格但专属首页）
   =========================================================== */
.index-footer {
  background: var(--bg-footer, #12151f);
  border-top: 1px solid var(--border-footer, rgba(37,99,235,0.12));
}
.index-footer-inner {
  max-width: 72rem;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}
.index-footer-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}
@media (min-width: 768px) {
  .index-footer-grid { grid-template-columns: repeat(4, 1fr); }
}
.index-footer-col h4 {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  color: var(--text-primary, #f8fafc);
}
.index-footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.index-footer-col ul li { margin-bottom: 0.5rem; }
.index-footer-col ul li a {
  color: var(--text-footer, #8892a0);
  font-size: 0.75rem;
  text-decoration: none;
  transition: color 0.2s ease;
}
.index-footer-col ul li a:hover { color: var(--accent-dark, #2563eb); }
.index-footer-divider {
  height: 1px;
  background: var(--border-footer, rgba(37,99,235,0.15));
  margin-bottom: 1.5rem;
}
.index-footer-copy {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-footer, #8892a0);
}
.index-footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 0.75rem;
  font-size: 0.75rem;
  color: var(--text-footer, #8892a0);
}
.index-footer-links a {
  color: var(--text-footer, #8892a0);
  text-decoration: none;
  transition: color 0.2s ease;
}
.index-footer-links a:hover { color: var(--accent-dark, #2563eb); }
.index-footer-links .index-footer-sep { color: var(--text-footer-sep, #556070); }

.icp-footer {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: nowrap;
  gap: 12px;
  width: 100%;
  min-width: fit-content;
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-footer, #8892a0);
  line-height: 1.5;
}
.icp-footer a {
  color: var(--text-footer, #8892a0);
  text-decoration: none;
  transition: color 0.2s ease;
  white-space: nowrap;
}
.icp-footer a:hover { color: var(--accent-dark, #2563eb); }
.police-icon {
  height: 14px;
  width: auto;
  display: inline-block;
  margin: 0;
  vertical-align: middle;
  flex-shrink: 0;
}

/* ===========================================================
   滚动条（仅首页）
   =========================================================== */
.index-scrollbar::-webkit-scrollbar { width: 6px; }
.index-scrollbar::-webkit-scrollbar-track { background: var(--color-bg-primary, #020617); }
.index-scrollbar::-webkit-scrollbar-thumb { background: rgba(59,130,246,0.2); border-radius: 3px; }
.index-scrollbar::-webkit-scrollbar-thumb:hover { background: rgba(59,130,246,0.4); }

/* ===========================================================
   移动端适配（≤768px）
   =========================================================== */
@media (max-width: 768px) {
  .index-breadcrumb {
    max-width: calc(100% - 2rem);
    margin: 5.5rem 1rem 0.375rem;
    font-size: 0.75rem;
  }
  .index-search-bar {
    max-width: calc(100% - 2rem);
    height: 48px;
    margin: 0 1rem 1.5rem;
    border-radius: 12px;
  }
  .index-search-icon { font-size: 0.8125rem; padding: 0 0 0 0.875rem; }
  .index-search-input { font-size: 0.8125rem; padding-left: 0.5rem; }

  .index-categories { padding: 0 1rem 1.5rem; }
  .index-category-grid { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
  .index-category-card { padding: 2.25rem 0.75rem 1.25rem; }
  .index-category-icon {
    width: 44px; height: 44px;
    font-size: 1.125rem;
    border-radius: 12px;
    margin-bottom: 0.625rem;
  }
  .index-category-title { font-size: 0.9375rem; }
  .index-category-desc { font-size: 0.75rem; }

  .index-quick-bar {
    margin: 0 1rem 1.5rem;
    gap: 0.375rem;
    padding: 0.625rem 1rem;
    border-radius: 28px;
  }
  .index-quick-item {
    padding: 0.375rem 0.5rem;
    min-width: 54px;
    min-height: 44px;
  }
  .index-quick-icon { font-size: 0.9375rem; }
  .index-quick-text { font-size: 0.625rem; }

  .index-stats-bar { padding: 1rem; }
  .index-stats-bar p { font-size: 0.8125rem; }

  /* 第2屏：显示移动端Tab，隐藏网格 */
  .index-screen2 { padding: 2rem 1rem 3rem; }
  .index-hot-grid { display: none; }
  .index-mobile-tabs { display: flex; }
  .index-hot-mobile-list { display: flex; }
  .index-screen2-title span { font-size: 1rem; }

  /* 第3屏：左右两栏改为上下堆叠 */
  .index-screen3 { padding: 0 1rem; }
  .index-screen3-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .index-screen3-col-title span { font-size: 0.875rem; }

  /* 页脚单列 */
  .index-footer-inner { padding: 2rem 1rem; }
}

/* ===========================================================
   平板端适配（769px - 1023px）
   =========================================================== */
@media (min-width: 769px) and (max-width: 1023px) {
  .index-category-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .index-hot-grid { grid-template-columns: repeat(2, 1fr); }
  .index-breadcrumb { max-width: 560px; margin-left: 1.5rem; margin-right: 1.5rem; }
  .index-search-bar { max-width: 560px; margin-left: 1.5rem; margin-right: 1.5rem; }
  .index-screen3-inner { gap: 1.5rem; }
}

/* 平板端隐藏移动端Tab */
@media (min-width: 769px) {
  .index-mobile-tabs { display: none !important; }
  .index-hot-mobile-list { display: none !important; }
}

/* ===========================================================
   SEO 描述区块（首页底部，Footer 上方）
   在低饱和深蓝背景上保持可读性
   =========================================================== */
.index-seo-text {
  padding: 48px 0 32px;
  border-top: 1px solid #1e293b;
  background: transparent;
}

.index-seo-text p {
  color: #94a3b8;
  font-size: 14px;
  line-height: 1.9;
  margin: 0 auto 16px;
  max-width: 960px;
  text-align: left;
}

.index-seo-text p:last-child {
  margin-bottom: 0;
}

.index-seo-text a {
  color: #60a5fa;
  text-decoration: none;
  transition: color 0.2s;
}

.index-seo-text a:hover {
  color: #3b82f6;
  text-decoration: underline;
}

.index-seo-text strong {
  color: #cbd5e1;
  font-weight: 600;
}

/* ===========================================================
   FAQ 常见问题区块（SEO 描述下方，Footer 上方）
   =========================================================== */
.index-faq {
  padding: 32px 0 48px;
  border-top: 1px solid var(--border-color, #334155);
}

.index-faq h2 {
  color: var(--text-primary, #f8fafc);
  font-size: 20px;
  font-weight: 700;
  margin: 0 auto 24px;
  max-width: 960px;
  text-align: left;
}

.index-faq-item {
  max-width: 960px;
  margin: 0 auto 16px;
  padding: 16px 20px;
  background: var(--bg-card, #0f172a);
  border: 1px solid var(--border-color, #334155);
  border-radius: 8px;
  transition: border-color 0.2s, background 0.2s;
}

.index-faq-item:hover {
  background: var(--bg-card-hover, #1e293b);
  border-color: var(--border-card-hover, #3b82f6);
}

.index-faq-item h3 {
  color: var(--text-primary, #f8fafc);
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 8px;
}

.index-faq-item p {
  color: var(--text-secondary, #94a3b8);
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
}

/* FAQ 响应式适配 */
@media (max-width: 768px) {
  .index-seo-text { padding: 32px 1.5rem 24px; }
  .index-faq { padding: 24px 1.5rem 32px; }
  .index-faq h2 { font-size: 18px; }
  .index-faq-item { padding: 12px 16px; }
}