/* ===========================================================
   main.css — 全局公共样式（低饱和深蓝商务风格）
   =========================================================== */

/* ===========================================================
   @font-face — 本地字体声明（导航卡片头像专用）
   =========================================================== */
@font-face { font-family: 'Icon-EN'; src: url('/assets/fonts/bebas-neue.woff2') format('woff2'); }
@font-face { font-family: 'Icon-CN'; src: url('/assets/fonts/LXGWWenKai-Regular.ttf'); }
@font-face { font-family: 'Icon-Mix'; src: url('/assets/fonts/outfit-bold.woff2') format('woff2'); }

/* --- 设计系统变量（引用 theme-variables.css 实现动态换肤） --- */
:root {
  --color-bg-primary: var(--bg-page);
  --color-bg-secondary: var(--bg-card);
  --color-bg-tertiary: var(--bg-card-hover);
  --color-bg-hover: var(--bg-card-hover);
  --color-border: var(--border-color);
  --color-text-primary: var(--text-primary);
  --color-text-secondary: var(--text-secondary);
  --color-text-tertiary: var(--text-tertiary);
  --color-accent: var(--accent);
  --color-accent-hover: var(--accent-hover);
  --color-success: var(--success);
  --color-warning: var(--warning);
  --color-danger: var(--danger);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;
}

/* --- Reset --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--color-bg-primary, #020617);
  color: var(--color-text-primary, #f8fafc);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-accent, #3b82f6); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-accent-hover, #60a5fa); }

img { max-width: 100%; display: block; }

/* --- 容器 --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===========================================================
   导航栏
   =========================================================== */
.navbar {
  background: var(--color-bg-secondary, #0f172a);
  height: 70px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--color-border, #334155);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow 0.3s;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  width: 100%;
  align-items: center;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-accent, #3b82f6), var(--color-accent-hover, #60a5fa));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 1px;
}

.logo-link { text-decoration: none; }
.logo-link:hover { opacity: 0.85; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  text-decoration: none;
  color: var(--color-text-secondary, #94a3b8);
  padding: 8px 16px;
  font-size: 14px;
  border-radius: var(--radius-sm, 8px);
  transition: all 0.2s;
}

.nav-links a:hover {
  color: var(--color-text-primary, #f8fafc);
  background: var(--color-bg-tertiary, #1e293b);
}

.nav-links a.active {
  color: var(--color-text-primary, #f8fafc);
  background: var(--color-bg-tertiary, #1e293b);
  font-weight: 600;
}

.btn-login {
  padding: 8px 20px;
  border: 1px solid var(--color-accent, #3b82f6);
  background: transparent;
  color: var(--color-accent, #3b82f6);
  border-radius: var(--radius-sm, 8px);
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
}

.btn-login:hover {
  background: var(--color-accent, #3b82f6);
  color: var(--text-on-accent, #fff);
}

/* ===========================================================
   Hero 区域（首页）
   =========================================================== */
.hero {
  background: linear-gradient(135deg, var(--color-bg-secondary, #0f172a) 0%, var(--color-bg-primary, #020617) 100%);
  padding: var(--space-2xl, 64px) 0;
  text-align: center;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: var(--space-xs, 8px);
  background: linear-gradient(135deg, var(--color-text-primary, #f8fafc), var(--color-accent, #3b82f6));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  color: var(--color-text-secondary, #94a3b8);
  font-size: 18px;
  margin-bottom: var(--space-md, 24px);
}

/* --- 搜索框 --- */
.search-box {
  display: flex;
  max-width: 600px;
  margin: 0 auto;
  border-radius: 50px;
  overflow: hidden;
  border: 1px solid var(--color-border, #334155);
  background: var(--color-bg-secondary, #0f172a);
}

.search-box input {
  flex: 1;
  padding: 15px 30px;
  border: none;
  outline: none;
  font-size: 16px;
  background: transparent;
  color: var(--color-text-primary, #f8fafc);
}

.search-box input::placeholder { color: var(--color-text-secondary, #94a3b8); }
.search-box button {
  padding: 0 35px;
  background: var(--color-accent, #3b82f6);
  color: var(--text-on-accent, #fff);
  border: none;
  cursor: pointer;
  font-size: 16px;
  transition: background 0.2s;
}
.search-box button:hover { background: var(--color-accent-hover, #60a5fa); }

.search-hint,
.search-message {
  max-width: 600px;
  margin: 12px auto 0;
  font-size: 14px;
  color: var(--color-text-secondary, #94a3b8);
  text-align: center;
}

mark {
  background: var(--color-warning, #f59e0b);
  color: var(--text-black, #020617);
  padding: 2px 6px;
  border-radius: 3px;
  font-weight: 500;
}

/* --- 搜索结果 --- */
.search-results {
  max-width: 600px;
  margin: 20px auto 0;
  background: var(--color-bg-secondary, #0f172a);
  border-radius: var(--radius-md, 12px);
  box-shadow: var(--shadow-card);
  display: none;
  overflow: hidden;
  border: 1px solid var(--color-border, #334155);
  animation: slideDown 0.25s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.results-header {
  padding: var(--space-sm, 16px) 20px;
  background: var(--color-bg-tertiary, #1e293b);
  border-bottom: 1px solid var(--color-border, #334155);
  font-size: 14px;
  color: var(--color-text-tertiary, #cbd5e1);
}

.results-list { list-style: none; max-height: 400px; overflow-y: auto; }

.result-item {
  display: flex;
  align-items: center;
  padding: var(--space-sm, 16px) 20px;
  border-bottom: 1px solid var(--color-border, #334155);
  cursor: pointer;
  transition: background 0.2s;
}
.result-item:last-child { border-bottom: none; }
.result-item:hover { background: var(--color-bg-tertiary, #1e293b); }

.result-icon {
  width: 48px; height: 48px; margin-right: 15px;
  min-width: 48px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
}
.result-icon img { width: 40px; height: 40px; object-fit: contain; border-radius: 6px; }

.result-content { flex: 1; text-align: left; }
.result-content h4 { font-size: 15px; margin-bottom: 4px; color: var(--color-text-primary, #f8fafc); }
.result-content p { font-size: 13px; color: var(--color-text-secondary, #94a3b8); line-height: 1.4; text-align: left; }

.results-footer {
  padding: 12px 20px;
  background: var(--color-bg-tertiary, #1e293b);
  border-top: 1px solid var(--color-border, #334155);
  font-size: 12px;
  color: var(--color-text-secondary, #94a3b8);
  text-align: center;
}

.no-results { padding: 30px 20px; text-align: center; color: var(--color-text-secondary, #94a3b8); font-size: 14px; }

/* 高亮卡片 */
.highlight-card {
  animation: pulse 2s ease;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.3);
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

/* ===========================================================
   板块标题与卡片网格
   =========================================================== */
.tool-section { padding: var(--space-2xl, 64px) 0; }

.section-title {
  margin-bottom: var(--space-lg, 32px);
  font-size: 24px;
  border-left: 4px solid var(--color-accent, #3b82f6);
  padding-left: var(--space-sm, 16px);
  color: var(--color-text-primary, #f8fafc);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-md, 24px);
}

.card {
  background: var(--color-bg-secondary, #0f172a);
  padding: var(--space-lg, 32px);
  border-radius: var(--radius-md, 12px);
  text-align: center;
  transition: all 0.3s ease;
  cursor: pointer;
  border: 1px solid var(--color-border, #334155);
  position: relative;
}

.card:hover {
  transform: translateY(-6px);
  background: var(--color-bg-tertiary, #1e293b);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-accent, #3b82f6);
}

.card-icon { font-size: 40px; margin-bottom: var(--space-sm, 16px); }

.card-icon img {
  width: 48px; height: 48px; object-fit: contain; display: block;
  border-radius: var(--radius-md, 12px); margin: 0 auto;
}

.card h3 {
  margin-bottom: var(--space-xs, 8px);
  font-size: 18px;
  color: var(--color-text-primary, #f8fafc);
}

.card p {
  color: var(--color-text-secondary, #94a3b8);
  font-size: 14px;
  line-height: 1.5;
}

/* --- 热门标识 --- */
.hot-tag::before {
  content: "HOT";
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--color-danger, #ef4444);
  color: var(--text-on-accent, #fff);
  font-size: 10px;
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 600;
}

/* --- 新功能标签 --- */
.badge-new {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-accent, #3b82f6);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 4px;
  font-weight: 500;
}

.badge-vpn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-warning, #f59e0b);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 500;
}

/* 卡片同时有 HOT 标签和 VPN 标签时，VPN 下移避免重叠 */
.card.hot-tag .badge-vpn {
  top: 36px;
}

/* 隐藏的卡片 */
.card.hidden {
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
  position: absolute;
  visibility: hidden;
}

/* 工具网格5列 */
.tools-grid {
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

/* ===========================================================
   页面标题区（二级页面通用）
   =========================================================== */
.page-header {
  text-align: center;
  margin-bottom: var(--space-lg, 32px);
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text-primary, #f8fafc);
  margin-bottom: var(--space-xs, 8px);
}

.page-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary, #94a3b8);
  line-height: 1.6;
  max-width: 600px;
  margin: 0 auto;
}

/* ===========================================================
   分类筛选按钮
   =========================================================== */
.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: var(--space-xl, 48px);
  flex-wrap: wrap;
}

.filter-tab {
  padding: 8px 20px;
  background: var(--color-bg-secondary, #0f172a);
  border: 1px solid var(--color-border, #334155);
  border-radius: 20px;
  font-size: 14px;
  color: var(--color-text-secondary, #94a3b8);
  cursor: pointer;
  transition: all 0.2s;
}

.filter-tab:hover {
  background: var(--color-bg-tertiary, #1e293b);
  border-color: var(--color-accent, #3b82f6);
  color: var(--color-accent, #3b82f6);
}

.filter-tab.active {
  background: var(--color-accent, #3b82f6);
  border-color: var(--color-accent, #3b82f6);
  color: var(--text-on-accent, #fff);
}

/* ===========================================================
   弹窗
   =========================================================== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(2, 6, 23, 0.8);
  z-index: 2000;
  justify-content: center;
  align-items: center;
  animation: fadeIn 0.2s ease;
}

.modal-overlay.active { display: flex; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal-content {
  background: var(--color-bg-secondary, #0f172a);
  border-radius: var(--radius-md, 12px);
  width: 90%;
  max-width: 400px;
  border: 1px solid var(--color-border, #334155);
  box-shadow: var(--shadow-hover);
  animation: slideUp 0.25s ease;
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

.modal-header {
  padding: var(--space-sm, 16px) 20px;
  border-bottom: 1px solid var(--color-border, #334155);
  text-align: center;
}
.modal-header h3 { font-size: 18px; color: var(--color-text-primary, #f8fafc); }

.modal-body {
  padding: var(--space-lg, 32px) 20px;
  text-align: center;
}
.modal-body p { font-size: 15px; color: var(--color-text-secondary, #94a3b8); line-height: 1.8; }

.modal-footer {
  padding: var(--space-sm, 16px) 20px;
  border-top: 1px solid var(--color-border, #334155);
  text-align: center;
}

.btn-close {
  padding: 10px 40px;
  background: var(--color-accent, #3b82f6);
  color: var(--text-on-accent, #fff);
  border: none;
  border-radius: var(--radius-sm, 8px);
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-close:hover {
  background: var(--color-accent-hover, #60a5fa);
  transform: translateY(-1px);
}

/* ===========================================================
   页脚
   =========================================================== */
footer {
  background: var(--bg-footer, #12151f);
  padding: var(--space-lg, 32px) 0;
  text-align: center;
  border-top: 1px solid var(--border-footer, rgba(37,99,235,0.12));
  margin-top: var(--space-2xl, 64px);
}

footer p {
  color: var(--text-footer, #8892a0);
  font-size: 14px;
}

/* ===========================================================
   面包屑导航 / 返回链接（二级页面通用）
   =========================================================== */
.back-link {
  display: inline-block;
  margin-bottom: 20px;
  color: var(--color-accent, #3b82f6);
  text-decoration: none;
  font-size: 14px;
}
.back-link:hover { color: var(--color-accent-hover, #60a5fa); }
.back-link::before { content: "\2190 "; }

/* ===========================================================
   移动端汉堡菜单与抽屉导航
   =========================================================== */

/* 汉堡按钮（桌面隐藏，移动端显示） */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.hamburger-btn span {
  display: block;
  width: 100%;
  height: 2.5px;
  background: var(--color-text-primary, #f8fafc);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hamburger-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger-btn.active span:nth-child(2) { opacity: 0; }
.hamburger-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* 抽屉遮罩 */
.drawer-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(2, 6, 23, 0.7);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}
.drawer-overlay.active { opacity: 1; visibility: visible; }

/* 抽屉菜单 */
.drawer-menu {
  position: fixed;
  top: 0; left: 0;
  width: 280px;
  height: 100%;
  background: var(--color-bg-secondary, #0f172a);
  z-index: 2000;
  border-right: 1px solid var(--color-border, #334155);
  box-shadow: 2px 0 20px rgba(0,0,0,0.4);
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
}
.drawer-menu.active { transform: translateX(0); }

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm, 16px) 20px;
  border-bottom: 1px solid var(--color-border, #334155);
}

.drawer-logo {
  font-size: 20px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-accent, #3b82f6), var(--color-accent-hover, #60a5fa));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.drawer-close {
  width: 36px; height: 36px;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--color-text-secondary, #94a3b8);
  transition: background 0.2s;
}
.drawer-close:hover { background: var(--color-bg-tertiary, #1e293b); }

/* 抽屉导航项 */
.drawer-nav { padding: 10px 0; }

.drawer-nav-item {
  display: flex;
  align-items: center;
  padding: 14px 20px;
  text-decoration: none;
  color: var(--color-text-secondary, #94a3b8);
  font-size: 15px;
  transition: all 0.2s;
  border-left: 3px solid transparent;
}

.drawer-nav-item svg {
  margin-right: var(--space-xs, 8px);
  flex-shrink: 0;
  stroke: currentColor;
}

.drawer-nav-item:hover {
  background: var(--color-bg-tertiary, #1e293b);
  color: var(--color-text-primary, #f8fafc);
  border-left-color: var(--color-accent, #3b82f6);
}

.drawer-nav-item.active {
  background: var(--color-bg-tertiary, #1e293b);
  color: var(--color-accent, #3b82f6);
  border-left-color: var(--color-accent, #3b82f6);
  font-weight: 600;
}

.drawer-footer {
  padding: var(--space-sm, 16px) 20px;
  border-top: 1px solid var(--color-border, #334155);
  margin-top: auto;
}

.drawer-login-btn {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--color-accent, #3b82f6);
  background: transparent;
  color: var(--color-accent, #3b82f6);
  border-radius: var(--radius-sm, 8px);
  cursor: pointer;
  font-size: 15px;
  transition: all 0.2s;
}
.drawer-login-btn:hover { background: var(--color-accent, #3b82f6); color: var(--text-on-accent, #fff); }

/* ===========================================================
   响应式 - 平板及以下
   =========================================================== */
@media (max-width: 1024px) {
  .tools-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 768px) {
  .hamburger-btn { display: flex; }
  .nav-links { display: none; }
  .nav-auth { display: none; }
  .nav-content { justify-content: flex-start; }
  .hamburger-btn { margin-right: var(--space-sm, 16px); }

  .hero h1 { font-size: 32px; }
  .hero p { font-size: 16px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .tools-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }

  .page-title { font-size: 26px; }
  .page-subtitle { font-size: 14px; }
  .filter-tabs { gap: 6px; margin-bottom: var(--space-md, 24px); }
  .filter-tab { padding: 6px 14px; font-size: 13px; }

  .modal-content { width: 92%; max-width: 360px; }
}

@media (min-width: 769px) {
  .hamburger-btn { display: none; }
}

@media (max-width: 480px) {
  .tools-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .card { padding: var(--space-sm, 16px); }
  .card-icon { font-size: 32px; margin-bottom: var(--space-xs, 8px); }
  .card h3 { font-size: 15px; }
  .card p { font-size: 13px; }
}

/* ===========================================================
   面包屑导航
   =========================================================== */
.breadcrumb {
  padding: var(--space-sm, 16px) 0 0;
  margin-bottom: var(--space-sm, 16px);
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 14px;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-text-secondary, #94a3b8);
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--color-border, #334155);
}

.breadcrumb a {
  color: var(--color-text-secondary, #94a3b8);
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--color-accent, #3b82f6);
}

.breadcrumb li[aria-current="page"] {
  color: var(--color-text-tertiary, #cbd5e1);
}

/* ===========================================================
   FAQ 板块（工具页通用）
   =========================================================== */
.faq-section {
  max-width: 800px;
  margin: var(--space-2xl, 64px) auto 0;
  padding: 0 20px;
}

.faq-section h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text-primary, #f8fafc);
  margin-bottom: var(--space-lg, 32px);
  border-left: 4px solid var(--color-accent, #3b82f6);
  padding-left: var(--space-sm, 16px);
}

.faq-item {
  background: var(--color-bg-secondary, #0f172a);
  border: 1px solid var(--color-border, #334155);
  border-radius: var(--radius-md, 12px);
  padding: var(--space-md, 24px);
  margin-bottom: var(--space-sm, 16px);
}

.faq-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary, #f8fafc);
  margin-bottom: var(--space-xs, 8px);
  line-height: 1.5;
}

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

/* details/summary 版 FAQ（新版工具页使用） */
.faq-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text-primary, #f8fafc);
  margin-bottom: var(--space-lg, 32px);
  border-left: 4px solid var(--color-accent, #3b82f6);
  padding-left: var(--space-sm, 16px);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm, 16px);
}

details.faq-item {
  background: var(--color-bg-secondary, #0f172a);
  border: 1px solid var(--color-border, #334155);
  border-radius: var(--radius-md, 12px);
  padding: 0;
  margin-bottom: 0;
  overflow: hidden;
}

details.faq-item[open] {
  border-color: var(--color-accent, #3b82f6);
}

.faq-question {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary, #f8fafc);
  line-height: 1.5;
  padding: var(--space-md, 24px);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.2s;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  font-size: 20px;
  font-weight: 300;
  color: var(--color-accent, #3b82f6);
  flex-shrink: 0;
  margin-left: 12px;
  transition: transform 0.25s;
}

details.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
}

.faq-question:hover {
  background: var(--color-bg-hover, #1e293b);
}

.faq-answer {
  padding: 0 var(--space-md, 24px) var(--space-md, 24px);
  border-top: 1px solid var(--color-border, #334155);
}

.faq-answer p {
  font-size: 14px;
  color: var(--color-text-secondary, #94a3b8);
  line-height: 1.7;
  margin: var(--space-sm, 16px) 0 0;
}

.faq-answer code {
  background: rgba(59, 130, 246, 0.12);
  color: var(--color-accent-hover, #60a5fa);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
  font-family: 'Courier New', Courier, monospace;
}

@media (max-width: 768px) {
  .faq-section { padding: 0 16px; }
  .faq-section h2 { font-size: 18px; }
  .faq-item { padding: var(--space-sm, 16px); }
  .faq-item h3 { font-size: 15px; }
  .faq-title { font-size: 18px; }
  .faq-question { font-size: 15px; padding: var(--space-sm, 16px); }
  .faq-answer { padding: 0 var(--space-sm, 16px) var(--space-sm, 16px); }
}

/* ===========================================================
   隐私政策 / 友情链接等静态内容页
   =========================================================== */
.static-page {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-2xl, 64px) 20px;
}

.static-page h1 {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text-primary, #f8fafc);
  margin-bottom: var(--space-lg, 32px);
}

.static-page h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-primary, #f8fafc);
  margin: var(--space-xl, 48px) 0 var(--space-sm, 16px);
  border-left: 3px solid var(--color-accent, #3b82f6);
  padding-left: 12px;
}

.static-page h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text-primary, #f8fafc);
  margin: var(--space-md, 24px) 0 var(--space-xs, 8px);
}

.static-page p {
  font-size: 15px;
  color: var(--color-text-secondary, #94a3b8);
  line-height: 1.8;
  margin-bottom: var(--space-sm, 16px);
}

.static-page ul, .static-page ol {
  padding-left: 24px;
  margin-bottom: var(--space-sm, 16px);
}

.static-page li {
  font-size: 15px;
  color: var(--color-text-secondary, #94a3b8);
  line-height: 1.8;
  margin-bottom: 6px;
}

.static-page a {
  color: var(--color-accent, #3b82f6);
}

.static-page a:hover {
  color: var(--color-accent-hover, #60a5fa);
}

/* 友链卡片网格 */
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-sm, 16px);
  margin: var(--space-sm, 16px) 0;
}

.link-card {
  background: var(--color-bg-secondary, #0f172a);
  border: 1px solid var(--color-border, #334155);
  border-radius: var(--radius-md, 12px);
  padding: var(--space-sm, 16px);
  text-decoration: none;
  transition: all 0.2s;
  display: block;
}

.link-card:hover {
  border-color: var(--color-accent, #3b82f6);
  background: var(--color-bg-tertiary, #1e293b);
}

.link-card-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary, #f8fafc);
  margin-bottom: 6px;
}

.link-card-desc {
  font-size: 13px;
  color: var(--color-text-secondary, #94a3b8);
  line-height: 1.5;
}

/* 本站信息卡片 */
.site-info-card {
  background: var(--color-bg-secondary, #0f172a);
  border: 1px solid var(--color-border, #334155);
  border-radius: var(--radius-md, 12px);
  padding: var(--space-md, 24px);
  margin: var(--space-sm, 16px) 0;
}

.site-info-card .site-info-row {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 12px;
  font-size: 15px;
}

.site-info-card .site-info-label {
  color: var(--color-text-tertiary, #cbd5e1);
  min-width: 80px;
  flex-shrink: 0;
}

.site-info-card .site-info-value {
  color: var(--color-text-primary, #f8fafc);
  flex: 1;
}

.copy-code-block {
  background: var(--color-bg-primary, #020617);
  border: 1px solid var(--color-border, #334155);
  border-radius: var(--radius-sm, 8px);
  padding: 12px 16px;
  font-family: 'Menlo', 'Consolas', 'Courier New', monospace;
  font-size: 13px;
  color: var(--color-text-tertiary, #cbd5e1);
  word-break: break-all;
  line-height: 1.6;
  position: relative;
  margin-top: var(--space-xs, 8px);
}

.btn-copy-code {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-xs, 8px);
  padding: 8px 16px;
  background: var(--color-bg-tertiary, #1e293b);
  border: 1px solid var(--color-border, #334155);
  border-radius: var(--radius-sm, 8px);
  color: var(--color-text-primary, #f8fafc);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-copy-code:hover {
  border-color: var(--color-accent, #3b82f6);
  color: var(--color-accent, #3b82f6);
}

/* 友链列表空状态提示 */
.links-empty-hint {
  grid-column: 1 / -1;
  color: var(--color-text-secondary, #94a3b8);
  font-size: 14px;
  text-align: center;
  padding: 32px 0;
}

@media (max-width: 768px) {
  .static-page { padding: var(--space-lg, 32px) 16px; }
  .static-page h1 { font-size: 24px; }
  .static-page h2 { font-size: 18px; }
  .links-grid { grid-template-columns: 1fr 1fr; }
}

/* ===========================================================
   [data-theme="light"] 日间模式 — Hover 交互重写
   方案 A：悬停时保持背景不变，仅通过阴影提供反馈
   =========================================================== */
[data-theme="light"] .faq-item:hover,
[data-theme="light"] .content-card:hover,
[data-theme="light"] .list-item:hover {
  background-color: #ffffff !important;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  border-color: #e2e8f0;
  color: inherit;
  transition: all 0.3s ease;
}

[data-theme="light"] .faq-question:hover {
  background-color: #ffffff !important;
  transition: background 0.3s ease;
}

[data-theme="light"] .card:hover {
  background: #ffffff !important;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

[data-theme="light"] .result-item:hover {
  background: #ffffff !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
}

[data-theme="light"] .link-card:hover {
  background: #ffffff !important;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

[data-theme="light"] details.faq-item:hover {
  border-color: #e2e8f0;
}

/* 确保日间模式下 FAQ 等卡片默认背景为白 */
[data-theme="light"] .faq-item,
[data-theme="light"] details.faq-item {
  background-color: #ffffff;
}

/* 日间模式下按钮 hover 保持原有样式不变（按钮不需要此规则） */