/* ============================================================
   问答中心 FAQ Center（2026-10 新增：新闻中心 → 问答中心）
   列表页 /faq + 详情页 /faq/[slug]
   复刻 news 家族 page-hero/section 基础 + faq- 专属组件
   ============================================================ */

/* ---- Page Hero（与 news 家族同体系：深色 hero + 蓝色强调） ---- */
.page-hero {
  position: relative;
  padding-top: 160px;
  padding-bottom: 72px;
  background: #000000;
  color: #ffffff;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(24,144,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.page-hero h1 {
  font-size: var(--fs-h1);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: #ffffff;
}

.page-hero .lead {
  font-size: var(--fs-lead);
  color: rgba(255,255,255,0.7);
  max-width: 680px;
  margin-top: var(--gap-md);
  line-height: 1.7;
}

.page-hero .eyebrow { color: var(--accent); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ---- Section（与家族通用结构一致） ---- */
.section {
  padding-block: clamp(72px, 10vw, var(--gap-2xl));
}

.section-alt { background: var(--surface-alt); }

.section + .section { border-top: 1px solid var(--border); }

.section-header { margin-bottom: var(--gap-xl); }

.section-header h2 {
  font-size: var(--fs-h2);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: var(--gap-sm);
}

.section-header .lead {
  font-size: var(--fs-lead);
  color: var(--muted);
  max-width: 680px;
  line-height: 1.7;
}

.section-no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.08em;
}

.section-count {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 12px;
  white-space: nowrap;
}

.section-head-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--gap-md);
}

/* ---- 分类锚点导航 ---- */
.faq-nav {
  position: sticky;
  top: 64px;
  z-index: 30;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.faq-nav-inner {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-block: 12px;
  scrollbar-width: none;
}

.faq-nav-inner::-webkit-scrollbar { display: none; }

.faq-chip {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 18px;
  transition: color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.faq-chip:hover {
  color: var(--accent);
  border-color: rgba(31, 111, 235, 0.45);
  box-shadow: 0 4px 14px rgba(21, 42, 77, 0.08);
}

.faq-chip .n {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
}

/* ---- 问答条目卡（列表页） ---- */
.faq-qa-list {
  display: grid;
  gap: 14px;
}

.faq-qa {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 4px 18px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px 22px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.faq-qa:hover {
  border-color: rgba(31, 111, 235, 0.4);
  box-shadow: 0 12px 32px rgba(21, 42, 77, 0.09);
  transform: translateY(-2px);
}

.faq-qa .qmark {
  grid-row: 1 / span 3;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(31, 111, 235, 0.08);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: start;
}

.faq-qa h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.01em;
  margin-top: 2px;
}

.faq-qa h3 a {
  color: inherit;
  transition: color 0.2s ease;
}

.faq-qa h3 a:hover { color: var(--accent); }

.faq-qa .a {
  font-size: 14.5px;
  color: var(--muted);
  line-height: 1.75;
}

.faq-qa .more {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--accent);
}

.faq-qa .more:hover { text-decoration: underline; }

/* ---- 详情页 ---- */
.faq-detail-wrap {
  display: grid;
  grid-template-columns: minmax(0, 760px);
  justify-content: center;
}

.faq-article {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.faq-article > h1 {
  font-size: var(--fs-h1);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: var(--gap-md);
}

.faq-article .intro {
  font-size: var(--fs-lead);
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: var(--gap-lg);
}

/* 直接答案高亮框 */
.faq-direct {
  position: relative;
  background: linear-gradient(180deg, rgba(31,111,235,0.06), rgba(31,111,235,0.02));
  border: 1px solid rgba(31, 111, 235, 0.28);
  border-left: 4px solid var(--accent);
  border-radius: 14px;
  padding: 22px 26px;
  margin-bottom: var(--gap-md);
}

.faq-direct .tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 10px;
}

.faq-direct .tag::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.faq-direct p {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.8;
}

.faq-note {
  font-size: 13px;
  color: var(--muted);
  border-top: 1px dashed var(--border);
  padding-top: 12px;
  margin-bottom: var(--gap-xl);
}

/* 内容板块 */
.faq-article section h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: var(--gap-xl) 0 var(--gap-md);
  padding-left: 14px;
  border-left: 4px solid var(--accent);
}

.faq-article h3 {
  font-size: 18px;
  font-weight: 700;
  margin: var(--gap-md) 0 8px;
}

.faq-article p { margin-bottom: 12px; }

.faq-article ul {
  list-style: none;
  margin-bottom: 12px;
}

.faq-article ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 8px;
}

.faq-article ul li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--accent);
  opacity: 0.75;
}

/* 建议清单 */
.faq-tips {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px;
  margin-top: var(--gap-lg);
}

.faq-tips .tag {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 10px;
}

.faq-tips ul li::before {
  content: '✓';
  background: none;
  color: var(--accent);
  font-weight: 700;
  left: 0;
  top: 0;
  width: auto;
  height: auto;
}

.faq-tips ul li { padding-left: 24px; }

/* 延伸问答卡 */
.faq-extend {
  margin-top: var(--gap-xl);
}

.faq-extend-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.faq-extend-card {
  display: grid;
  grid-template-rows: auto auto auto;
  gap: 8px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.faq-extend-card:hover {
  border-color: rgba(31, 111, 235, 0.4);
  box-shadow: 0 10px 26px rgba(21, 42, 77, 0.08);
}

.faq-extend-card .q {
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.5;
}

.faq-extend-card .a {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.65;
}

.faq-extend-card .more {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--accent);
}

/* 相关问题列表 */
.faq-rel-list {
  margin-top: var(--gap-lg);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}

.faq-rel-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  border-top: 1px solid var(--border);
  transition: background 0.2s ease, color 0.2s ease;
}

.faq-rel-list a:first-child { border-top: 0; }

.faq-rel-list a:hover {
  background: rgba(31, 111, 235, 0.05);
  color: var(--accent);
}

.faq-rel-list .qmark {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  background: rgba(31, 111, 235, 0.08);
  border-radius: 8px;
  padding: 3px 9px;
}

/* ---- 详情页 hero 简化版（浅色，与文章区连续） ---- */
.faq-pagehead {
  padding-top: 140px;
  padding-bottom: 48px;
  background:
    radial-gradient(ellipse 80% 70% at 50% 0%, rgba(24,144,255,0.07) 0%, transparent 70%),
    var(--surface-alt);
  border-bottom: 1px solid var(--border);
}

.faq-pagehead .meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: var(--gap-md);
  font-size: 13.5px;
  color: var(--muted);
}

.faq-pagehead .cat-tag {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(31, 111, 235, 0.08);
  border: 1px solid rgba(31, 111, 235, 0.25);
  border-radius: 999px;
  padding: 4px 14px;
}

/* ---- CTA ---- */
.faq-cta {
  background: #000000;
  color: #ffffff;
  padding-block: clamp(64px, 9vw, 96px);
}

.faq-cta h2 {
  font-size: var(--fs-h2);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.faq-cta .lead {
  color: rgba(255,255,255,0.7);
  margin-top: var(--gap-sm);
  line-height: 1.7;
}

.faq-cta .cta-buttons {
  display: flex;
  gap: 14px;
  margin-top: var(--gap-lg);
  flex-wrap: wrap;
}

.faq-cta .btn-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 999px;
  padding: 13px 30px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.faq-cta .btn-primary {
  background: var(--accent);
  color: #ffffff;
}

.faq-cta .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(24, 144, 255, 0.35);
}

.faq-cta .btn-ghost {
  border: 1px solid rgba(255,255,255,0.28);
  color: #ffffff;
}

.faq-cta .btn-ghost:hover {
  background: rgba(255,255,255,0.08);
  transform: translateY(-2px);
}

/* ---- 响应式 ---- */
@media (max-width: 920px) {
  .page-hero { padding-top: 130px; padding-bottom: 56px; }
  .faq-extend-grid { grid-template-columns: 1fr; }
  .faq-nav { top: 56px; }
}

@media (max-width: 640px) {
  .page-hero { padding-top: 118px; padding-bottom: 48px; }
  .faq-pagehead { padding-top: 116px; padding-bottom: 36px; }
  .faq-qa { grid-template-columns: 40px 1fr; padding: 16px 16px 18px; gap: 4px 14px; }
  .faq-qa .qmark { width: 34px; height: 34px; font-size: 13px; }
  .faq-qa h3 { font-size: 15.5px; }
  .faq-article > h1 { font-size: 26px; }
  .faq-article section h2 { font-size: 20px; }
  .faq-direct p { font-size: 15.5px; }
  .section-head-row { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  .faq-qa, .faq-extend-card, .faq-cta .btn-pill, .faq-chip { transition: none !important; }
  .faq-qa:hover, .faq-extend-card:hover { transform: none !important; }
}

/* ============================================================
   通用结构样式（自 news 家族补齐 2026-11-01：
   FAQ 为新建家族，原型迁移约定 topnav/footer/dropdown/mobile-nav
   等结构与响应式样式由各页面家族 CSS 自带，此处补齐保证导航、
   页脚、移动端菜单在 FAQ 页面正常渲染）
   ============================================================ */

.reveal {
      opacity: 0;
      transform: translateY(32px);
      transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    }

.reveal-item {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.45s cubic-bezier(0.16, 1, 0.3, 1), transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
    }

.reveal-item.visible { opacity: 1; transform: translateY(0); }

.eyebrow {
      font-family: var(--font-mono);
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: var(--gap-sm);
    }

.section-header { margin-bottom: var(--gap-xl); }

.section-header h2 {
      font-size: var(--fs-h2);
      font-weight: 700;
      letter-spacing: -0.01em;
      margin-bottom: var(--gap-sm);
    }

.section-header .lead {
      font-size: var(--fs-lead);
      color: var(--muted);
      max-width: 640px;
      line-height: 1.7;
    }

/* ---- Topnav ---- */
    .topnav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      height: 64px;
      background: transparent;
      border-bottom: 1px solid transparent;
      transition: background 0.3s, border-color 0.3s;
    }

.topnav nav a {
      font-size: 16px; font-weight: 500;
      color: rgba(255,255,255,0.65);
      transition: color 0.25s;
      position: relative;
      letter-spacing: 0.01em;
    }

.topnav nav a.active { color: #ffffff; }

.topnav nav a.active::after { transform: scaleX(1); }

.topnav.scrolled nav a.active { color: #1a1a1a; }

.topnav .nav-cta {
      font-size: 15px; font-weight: 600;
      color: #ffffff;
      padding: 10px 28px;
      border: 1px solid rgba(255,255,255,0.3);
      border-radius: var(--radius);
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      letter-spacing: 0.02em;
    }

.topnav .nav-cta:active { transform: scale(0.96); transition-duration: 0.1s; }

/* ---- Footer ---- */
    .pagefoot {
      background: var(--surface);
      border-top: 1px solid var(--border);
      padding-block: var(--gap-xl);
    }

.footer-inner {
      display: grid;
      grid-template-columns: 1.5fr auto auto auto auto;
      gap: var(--gap-xl);
      align-items: start;
    }

.footer-brand {
      font-family: var(--font-display);
      font-size: 18px;
      font-weight: 700;
      color: var(--fg);
      margin-bottom: 10px;
    }

.footer-col h4 {
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: rgba(0,0,0,0.45);
      margin-bottom: 16px;
    }

.footer-bottom {
      margin-top: var(--gap-xl);
      padding-top: var(--gap-lg);
      border-top: 1px solid var(--border);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: rgba(0,0,0,0.4);
    }

.footer-desc {
      max-width: 32ch;
      font-size: 13px;
      color: var(--muted);
    }

/* ---- Focus visible ---- */
    :focus { outline: none; }

:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 3px;
      border-radius: 4px;
    }

.btn:focus-visible { outline-offset: 4px; }

.topnav nav a:focus-visible { outline-offset: 6px; }

/* ---- Nav dropdowns ---- */
    .nav-dropdown {
      position: relative;
    }

.nav-dropdown > a {
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

.nav-dropdown > a::before {
      content: '';
      display: none;
    }

.nav-dropdown .dropdown-arrow {
      width: 8px;
      height: 8px;
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      transform: rotate(45deg) translateY(-2px);
      transition: transform 0.25s;
      flex-shrink: 0;
      opacity: 0.6;
    }

.dropdown-menu {
      position: absolute;
      top: 100%;
      left: 50%;
      transform: translateX(-50%) translateY(4px);
      min-width: 180px;
      background: rgba(10,10,10,0.95);
      backdrop-filter: blur(20px) saturate(180%);
      -webkit-backdrop-filter: blur(20px) saturate(180%);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius);
      padding: 8px 0;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.2s, transform 0.2s, background 0.3s, border-color 0.3s;
      box-shadow: 0 8px 24px rgba(0,0,0,0.3);
      z-index: 120;
    }

.topnav.scrolled .dropdown-menu {
      background: rgba(255,255,255,0.98);
      border-color: var(--border);
      box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    }

.nav-dropdown:hover .dropdown-menu,
    .nav-dropdown:focus-within .dropdown-menu {
      opacity: 1;
      pointer-events: auto;
      transform: translateX(-50%) translateY(0);
    }

.nav-dropdown:hover .dropdown-arrow {
      transform: rotate(-135deg) translateY(-2px);
    }

.dropdown-menu a {
      display: block;
      padding: 10px 20px;
      font-size: 14px;
      font-weight: 500;
      color: rgba(255,255,255,0.7);
      white-space: nowrap;
      transition: background 0.15s, color 0.15s;
    }

.dropdown-menu a:hover {
      background: rgba(255,255,255,0.08);
      color: #ffffff;
    }

.topnav.scrolled .dropdown-menu a:hover {
      background: var(--surface);
      color: var(--fg);
    }

.dropdown-menu a::after {
      display: none !important;
    }

/* ---- Mobile Nav ---- */
    .nav-toggle {
      display: none;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 40px; height: 40px;
      padding: 8px;
      border-radius: var(--radius);
      cursor: pointer;
      z-index: 110;
    }

.nav-toggle span {
      display: block;
      width: 100%; height: 2px;
      background: #ffffff;
      border-radius: 1px;
      transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s, background 0.3s;
      transform-origin: center;
    }

.topnav.scrolled .nav-toggle span { background: var(--fg); }

.mobile-nav { display: none; }

/* ---- Responsive ---- */
    @media (max-width: 1024px) { :root { --gutter: 32px; } }

@media (max-width: 920px) {
      .nav-toggle { display: flex; }
      .topnav nav { display: none; }
      .topnav > .container > .nav-cta { display: none; }
      .nav-toggle.active span { background: #ffffff !important; }
      .mobile-nav {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px; left: 0; right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        border-bottom: 1px solid var(--border);
        padding: 16px var(--gutter) 24px;
        gap: 8px;
        opacity: 0;
        transform: translateY(-8px);
        pointer-events: none;
        transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      }
      .mobile-nav.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
      .mobile-nav nav { display: flex; flex-direction: column; gap: 0; }
      .mobile-nav nav a {
        font-size: 16px; font-weight: 500;
        color: rgba(0, 0, 0, 0.75);
        padding: 14px 0;
        border-bottom: 1px solid var(--border);
        transition: color 0.2s;
      }
      .mobile-nav nav a:last-child { border-bottom: none; }
      .mobile-nav nav a:hover { color: #1a1a1a; }
      .mobile-nav nav a.active { color: #1a1a1a; }
      .mobile-nav .nav-cta {
        margin-top: 12px; text-align: center;
        font-size: 15px; font-weight: 600;
        color: #1a1a1a;
        padding: 12px 28px;
        border: 1px solid rgba(0, 0, 0, 0.25);
        border-radius: var(--radius);
        transition: all 0.25s;
      }
      .mobile-nav .nav-cta:hover {
        background: #1a1a1a; color: #ffffff; border-color: #1a1a1a;
      }

      .news-featured { grid-template-columns: 1fr; }
      .news-item { grid-template-columns: 1fr; }
      .news-item-thumb { width: 100%; aspect-ratio: 16 / 9; }
      .news-item-tag { justify-self: start; }
      .footer-inner { grid-template-columns: 1fr 1fr; gap: var(--gap-lg); }
      .footer-bottom { flex-direction: column; gap: var(--gap-sm); text-align: center; }
      :root { --gutter: 24px; }

      .dropdown-menu {
        position: static;
        transform: none;
        min-width: 0;
        background: transparent;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        border: none;
        border-radius: 0;
        padding: 0 0 0 16px;
        box-shadow: none;
        max-height: 0;
        overflow: hidden;
        opacity: 1;
        pointer-events: auto;
        transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      }
      .nav-dropdown.open .dropdown-menu,
        .nav-dropdown:hover .dropdown-menu,
        .nav-dropdown:focus-within .dropdown-menu {
        max-height: 600px;
        overflow-y: auto;
        transform: none;
      }
      .dropdown-menu a {
        padding: 10px 0;
        font-size: 14px;
        border-bottom: 1px solid var(--border);
      }
      .dropdown-menu a:last-child {
        border-bottom: none;
      }
    }

@media (max-width: 640px) {
      .footer-inner { grid-template-columns: 1fr; }
      .page-hero { padding-top: 120px; padding-bottom: 56px; }
      .cta-buttons { flex-direction: column; align-items: center; }
      .cta-buttons .btn { width: 100%; max-width: 320px; justify-content: center; }
    }

@media (prefers-reduced-motion: reduce) {
      .reveal, .reveal-item { opacity: 1 !important; transform: none !important; transition: none !important; }
      .news-featured-img img { transition: none !important; }
    }

/* ============================================================
   Footer 深色改版（2026-10 全站统一：#0B111C 深色体系 + 栏距重排）
   ============================================================ */
.pagefoot {
  background: #0B111C;
  color: rgba(255, 255, 255, 0.66);
  border-top-color: rgba(255, 255, 255, 0.08);
}

.footer-inner {
  grid-template-columns: 4.2fr 2fr 2fr 1.6fr 3.2fr;
  gap: 40px;
}

.footer-brand { color: #ffffff; }

.footer-desc { color: rgba(255, 255, 255, 0.55); }

.footer-col h4 { color: rgba(255, 255, 255, 0.4); }

.footer-col a { color: rgba(255, 255, 255, 0.72); }

.footer-col a:hover { color: #ffffff; }

.footer-bottom {
  border-top-color: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.42);
}

@media (max-width: 920px) {
    .footer-inner { grid-template-columns: repeat(3, 1fr); gap: 36px 28px; }
  .footer-inner > div:first-child { grid-column: 1 / -1; }
  .footer-col:last-child { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 10px; }
}

@media (max-width: 640px) {
  .footer-inner { grid-template-columns: 1fr; }
}

/* ---- Design Tokens（自 news 家族 :root 补齐：FAQ 家族独立加载，缺变量会导致全部 var() 失效）---- */
:root {
      --bg:      #ffffff;
      --surface: #f7f7f8;
      --fg:      #1a1a1a;
      --muted:   #6b6b6b;
      --border:  #e5e5e5;
      --accent:  #1890ff;

      --accent-soft: color-mix(in oklch, var(--accent) 10%, transparent);
      --fg-soft:     color-mix(in oklch, var(--fg) 4%, transparent);
      --surface-alt: #f0f0f2;
      --surface-elevated: #ffffff;

      --font-display: 'Open Sans', system-ui, -apple-system, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
      --font-body:    'Open Sans', system-ui, -apple-system, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
      --font-mono:    ui-monospace, 'JetBrains Mono', 'SF Mono', Menlo, monospace;

      --fs-h1: clamp(36px, 5vw, 56px);
      --fs-h2: clamp(28px, 3.5vw, 42px);
      --fs-h3: 20px;
      --fs-lead: 18px;
      --fs-body: 16px;
      --fs-meta: 13px;

      --gap-xs: 8px;
      --gap-sm: 12px;
      --gap-md: 24px;
      --gap-lg: 40px;
      --gap-xl: 72px;
      --gap-2xl: 128px;
      --container: 1280px;
      --gutter: 48px;

      --radius: 8px;
      --radius-lg: 16px;
      --radius-xl: 24px;
    }