/* ==========================================================================
   VPNAN - 跨页面共享组件样式
   ========================================================================== */

/* ==========================================================================
   Tab 切换组件
   ========================================================================== */

.tabs {
  position: relative;
}

.tab-list {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px 18px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  border-radius: var(--r-xs) var(--r-xs) 0 0;
  border: 1px solid transparent;
  border-bottom: none;
  white-space: nowrap;
  min-height: 44px;
  transition: color .15s, background-color .15s, border-color .15s;
}

.tab-btn:hover {
  color: var(--text);
  background: var(--bg-panel);
}

.tab-btn[aria-selected="true"] {
  color: var(--text);
  background: var(--bg-panel);
  border-color: var(--border);
  box-shadow: inset 0 -2px 0 var(--accent);
}

.tab-btn svg { display: block; flex: 0 0 auto; }

.tab-panel {
  padding: 20px 0;
}

.tab-panel[hidden] { display: none; }

/* ==========================================================================
   长页分类跳转导航（toc-tabs）
   ========================================================================== */

.toc-tabs {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  scrollbar-width: thin;
  position: sticky;
  top: var(--header-h);
  z-index: 30;
}

.toc-tabs a {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border-radius: var(--r-xs);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  white-space: nowrap;
  flex-shrink: 0;
  transition: color .15s, background-color .15s, border-color .15s;
}

.toc-tabs a:hover {
  color: var(--text);
  border-color: var(--accent);
}

.toc-tabs a.active {
  color: var(--accent-dark);
  background: var(--tint-accent);
  border-color: var(--accent);
}

body:has(.toc-tabs) section[id],
body:has(.toc-tabs) article[id] {
  scroll-margin-top: calc(var(--header-h) + 60px);
}

/* ==========================================================================
   FAQ 折叠项
   ========================================================================== */

.faq-list {
  border-top: 1px solid var(--border);
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 4px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  min-height: 48px;
}

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

.faq-item summary::after {
  content: "";
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
  transition: transform .2s;
  flex-shrink: 0;
  margin-left: auto;
}

.faq-item[open] summary::after { transform: rotate(225deg); }

.faq-item summary:hover { color: var(--accent-dark); }

.faq-item .faq-body {
  padding: 0 4px 18px;
  color: var(--text-muted);
  font-size: 14.5px;
  line-height: 1.75;
  max-width: 46em;
}

/* ==========================================================================
   套餐卡片
   ========================================================================== */

.plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: stretch;
}

.plan-card-lg {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: transform .15s, box-shadow .15s;
}

.plan-card-lg:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 28px -16px rgba(41, 33, 21, .30);
}

.plan-card-lg.featured {
  border-color: var(--accent);
  box-shadow: inset 0 3px 0 var(--accent), 0 14px 28px -16px rgba(41, 33, 21, .30);
}

.plan-badge {
  position: absolute;
  top: -11px;
  left: 20px;
  background: var(--accent);
  color: var(--bg-panel);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  padding: 4px 12px;
  border-radius: 999px;
  white-space: nowrap;
}

.plan-card-name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  margin-bottom: 4px;
}

.plan-card-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.plan-card-price {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.1;
  margin-bottom: 4px;
}

.plan-card-price .per {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
}

.plan-card-note {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.plan-card-features {
  list-style: none;
  margin-bottom: 22px;
  flex: 1 1 auto;
}

.plan-card-features li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 5px 0;
  font-size: 13.5px;
  color: var(--text);
}

.plan-card-features li svg {
  display: block;
  flex: 0 0 auto;
  margin-top: 3px;
  color: var(--accent);
}

.plan-card-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 20px;
  border-radius: var(--r-sm);
  background: var(--text);
  color: var(--bg-panel);
  font-family: var(--font-display);
  font-size: 14.5px;
  font-weight: 800;
  transition: transform .15s, box-shadow .15s;
}

.plan-card-btn:hover {
  transform: translateY(-2px);
  box-shadow: inset 0 2px 0 var(--accent);
}

.plan-card-btn.ghost {
  background: var(--bg-panel);
  color: var(--text);
  border: 1px solid var(--border);
  font-weight: 700;
}

.plan-card-btn.ghost:hover {
  box-shadow: inset 0 2px 0 var(--accent);
}

/* ==========================================================================
   线路表 / 宽表格（窄屏横滑 wrapper）
   ========================================================================== */

.table-scroll {
  overflow-x: auto;
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--bg-panel);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 640px;
}

.data-table th,
.data-table td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table th {
  background: var(--bg-panel2);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--text);
  text-transform: uppercase;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover {
  background: var(--tint-accent);
}

.data-table td .table-flag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.data-table td .table-flag svg {
  display: block;
  border-radius: 3px;
  flex-shrink: 0;
}

/* 表格首列文字用深色，移动端阳光下可读 */
.data-table td:first-child {
  color: var(--text);
  font-weight: 700;
}

/* ==========================================================================
   平台卡片（客户端下载区）
   ========================================================================== */

.platform-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.platform-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 20px 14px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  text-align: center;
  transition: transform .15s, box-shadow .15s;
}

.platform-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px -12px rgba(41, 33, 21, .25);
}

.platform-card svg {
  display: block;
  color: var(--text);
  opacity: .8;
}

.platform-card-name {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--text);
}

.platform-card-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 7px 14px;
  border-radius: var(--r-xs);
  background: var(--text);
  color: var(--bg-panel);
  font-size: 12.5px;
  font-weight: 700;
  transition: box-shadow .15s;
}

.platform-card-btn:hover {
  box-shadow: inset 0 2px 0 var(--accent);
}

/* ==========================================================================
   博客文章卡
   ========================================================================== */

.post-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: transform .15s, box-shadow .15s;
}

.post-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 28px -16px rgba(41, 33, 21, .30);
}

.post-card-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
}

.post-card-tag {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--accent-dark);
  background: var(--tint-accent);
  border-radius: 4px;
  padding: 3px 8px;
  margin-bottom: 10px;
}

.post-card-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-summary {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1 1 auto;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-meta {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   Callout 引用块
   ========================================================================== */

.callout {
  border-left: 3px solid var(--accent);
  background: var(--bg-panel);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  padding: 14px 18px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
  margin: 20px 0;
}

.callout strong {
  color: var(--accent-dark);
}

.callout.callout-warn {
  border-left-color: var(--warn);
}

.callout.callout-warn strong {
  color: var(--warn);
}

/* ==========================================================================
   文末推广块（博客文章页用）
   ========================================================================== */

.promo-block {
  margin: 40px 0;
  padding: 28px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  border-top: 3px solid var(--accent);
  text-align: center;
}

.promo-block-brand {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -.01em;
  margin-bottom: 6px;
}

.promo-block-text {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 30em;
  margin: 0 auto 18px;
}

.promo-block-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 28px;
  border-radius: var(--r-sm);
  background: var(--text);
  color: var(--bg-panel);
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 800;
  transition: transform .15s, box-shadow .15s;
}

.promo-block-btn:hover {
  transform: translateY(-2px);
  box-shadow: inset 0 3px 0 var(--accent);
}

/* ==========================================================================
   徽章 / 标签
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--accent-dark);
  background: var(--tint-accent);
  border-radius: 999px;
  padding: 4px 12px;
  white-space: nowrap;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}

.badge svg {
  display: block;
  flex: 0 0 auto;
}

.tag {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-panel2);
  border-radius: 4px;
  padding: 3px 9px;
  white-space: nowrap;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ==========================================================================
   通用卡片
   ========================================================================== */

.card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 24px;
}

.card-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 10px;
}

.card-text {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ==========================================================================
   页脚
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg);
  padding: 48px 0 28px;
  position: relative;
  z-index: 2;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 12px;
}

.footer-brand svg { display: block; }

.footer-brand-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  letter-spacing: -.01em;
}

.footer-desc {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 30em;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.footer-links {
  list-style: none;
}

.footer-links li { margin-bottom: 8px; }

.footer-links a {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text);
  display: inline-block;
  padding: 2px 0;
}

.footer-links a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-hot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-hot-links a {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 12px;
  transition: color .15s, border-color .15s;
}

.footer-hot-links a:hover {
  color: var(--accent-dark);
  border-color: var(--accent);
}

.footer-lang-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.footer-lang-links a {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

.footer-lang-links a:hover { color: var(--text); }

.footer-lang-links a.current { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-copyright {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-legal {
  display: flex;
  gap: 18px;
}

.footer-legal a {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

.footer-legal a:hover { color: var(--text); }

/* ==========================================================================
   响应式
   ========================================================================== */

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (max-width: 768px) {
  .plans-grid {
    grid-template-columns: 1fr;
  }
  .platform-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .platform-grid {
    grid-template-columns: 1fr;
  }
}

/* ---- 渲染动态文本的徽章/标签宽度防御 ---- */
.badge,
.tag {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---- 文章页裸表格防御 ---- */
.prose > .table-scroll {
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
  min-width: 0;
}