/* ===== 页面作用域：page-faq ===== */
.page-faq {
  --faq-gold: var(--accent-gold);
  --faq-red: var(--signal-red);
  background: var(--ink);
  color: var(--text-primary);
  min-height: 100vh;
}

/* 面包屑在当前页面的间距微调 */
.page-faq .breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 28px 24px 0;
}

/* ===== 顶部搜索区 ===== */
.page-faq .faq-hero {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 56px 24px 40px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 24px;
  bottom: 24px;
  width: 110px;
  height: 110px;
  background-image: radial-gradient(var(--line) 1.2px, transparent 1.2px);
  background-size: 14px 14px;
  opacity: .6;
  pointer-events: none;
}

.page-faq .faq-hero-kicker {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--faq-gold);
  border: 1px solid var(--faq-gold);
  padding: 6px 10px;
  margin: 0 0 24px;
}

.page-faq .faq-hero-copy h1 {
  font-size: clamp(34px, 6vw, 68px);
  font-weight: 200;
  letter-spacing: -.02em;
  line-height: 1.08;
  margin: 0 0 24px;
  color: var(--text-primary);
  max-width: 14em;
}

.page-faq .faq-hero-sub {
  max-width: 640px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 0 0 32px;
}

/* 搜索框 */
.page-faq .faq-search {
  position: relative;
  max-width: 520px;
  margin-bottom: 20px;
}

.page-faq .faq-search label {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.page-faq .faq-search input {
  width: 100%;
  padding: 16px 18px;
  background: var(--panel);
  border: 2px solid var(--line);
  color: var(--text-primary);
  font: inherit;
  font-size: 16px;
  outline: none;
  transition: border-color .2s var(--ease);
}

.page-faq .faq-search input:focus {
  border-color: var(--faq-gold);
}

/* 快捷分类标签 */
.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.page-faq .faq-tags span {
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: .08em;
  margin-right: 4px;
}

.page-faq .faq-tags a {
  padding: 6px 12px;
  border: 1px solid var(--line);
  color: var(--text-primary);
  text-decoration: none;
  font-size: 14px;
  transition: border-color .2s, background .2s;
}

.page-faq .faq-tags a:hover {
  border-color: var(--faq-gold);
  background: var(--brand);
}

/* 头部视觉图 */
.page-faq .faq-visual {
  margin: 0;
  position: relative;
  max-width: 100%;
}

.page-faq .faq-visual::before {
  content: "";
  position: absolute;
  inset: 14px -14px -14px 14px;
  background: repeating-linear-gradient(-45deg, transparent 0 6px, rgba(201, 162, 39, .28) 6px 8px);
  z-index: 0;
}

.page-faq .faq-visual img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard);
}

/* ===== 主体双栏布局 ===== */
.page-faq .faq-layout {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.page-faq .faq-main {
  min-width: 0;
}

/* ===== 分类面板 ===== */
.page-faq .faq-section {
  position: relative;
  padding: clamp(24px, 4vw, 40px);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
  background: var(--paper);
  margin-bottom: 56px;
  color: var(--ink);
}

.page-faq .faq-section::after {
  content: "";
  position: absolute;
  top: -6px;
  right: 24px;
  width: 76px;
  height: 12px;
  background: repeating-linear-gradient(90deg, var(--ink) 0 6px, transparent 6px 12px);
  opacity: .55;
  pointer-events: none;
}

.page-faq .faq-cat-rank,
.page-faq .faq-cat-browser {
  background: var(--paper-2);
}

.page-faq .faq-section-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 22px;
  margin-bottom: 32px;
}

.page-faq .faq-section-num {
  font-size: 44px;
  font-weight: 800;
  line-height: 1;
  color: var(--faq-gold);
  letter-spacing: -.04em;
  flex: none;
  min-width: 68px;
}

.page-faq .faq-section-head h2 {
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 6px;
  color: var(--ink);
  letter-spacing: -.01em;
}

.page-faq .faq-section-head p {
  margin: 0;
  font-size: 14px;
  color: var(--panel);
  opacity: .72;
  line-height: 1.5;
}

/* ===== 手风琴列表 ===== */
.page-faq .faq-list {
  margin: 0;
}

.page-faq .faq-item {
  border: 2px solid var(--ink);
  background: var(--white);
  margin-bottom: 16px;
  box-shadow: 3px 3px 0 rgba(10, 11, 16, .85);
  transition: box-shadow .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--brand-highlight);
}

.page-faq .faq-item[open] {
  box-shadow: 6px 6px 0 rgba(10, 11, 16, .9);
}

.page-faq .faq-q {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px;
  cursor: pointer;
  user-select: none;
}

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

.page-faq .faq-q-num {
  font-size: 12px;
  font-weight: 800;
  color: var(--faq-gold);
  border: 1px solid var(--faq-gold);
  padding: 4px 6px;
  line-height: 1;
  flex: none;
  background: rgba(201, 162, 39, .08);
}

.page-faq .faq-q-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  flex: 1;
  line-height: 1.5;
}

.page-faq .faq-q-toggle {
  width: 24px;
  height: 24px;
  position: relative;
  flex: none;
}

.page-faq .faq-q-toggle::before,
.page-faq .faq-q-toggle::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  top: 50%;
  height: 2px;
  background: var(--ink);
  transform: translateY(-50%);
  transition: transform .24s var(--ease);
}

.page-faq .faq-q-toggle::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .faq-item[open] .faq-q-toggle::after {
  transform: translateY(-50%) rotate(0deg);
}

/* 答案区 */
.page-faq .faq-a {
  padding: 0 20px 24px;
  border-top: 1px dashed var(--line-light);
}

.page-faq .faq-a p {
  margin: 16px 0 0;
  color: var(--panel);
  font-size: 16px;
  line-height: 1.75;
  max-width: 64ch;
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-top: 16px;
}

.page-faq .faq-copy-btn {
  background: transparent;
  border: 1px solid var(--ink);
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
  color: var(--ink);
  font-family: inherit;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-copy-btn:hover {
  background: var(--ink);
  color: var(--white);
}

.page-faq .faq-a a {
  color: var(--brand);
  text-underline-offset: 4px;
  text-decoration-thickness: 2px;
  font-weight: 600;
}

.page-faq .faq-a a:hover {
  color: var(--brand-highlight);
}

/* ===== 侧边栏 ===== */
.page-faq .faq-sidebar {
  display: grid;
  gap: 32px;
  align-content: start;
  min-width: 0;
}

/* 问题分类索引 */
.page-faq .faq-index {
  border: 2px solid var(--ink);
  background: var(--paper);
  padding: 24px;
  box-shadow: var(--shadow-hard);
  color: var(--ink);
}

.page-faq .faq-index-label {
  display: block;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--brand);
  font-weight: 800;
  margin-bottom: 18px;
  text-transform: uppercase;
}

.page-faq .faq-index-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  padding: 12px 4px;
  border-bottom: 1px solid var(--line-light);
  border-left: 2px solid transparent;
  padding-left: 12px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
  transition: border-color .2s, color .2s;
}

.page-faq .faq-index-link:last-child {
  border-bottom: 0;
}

.page-faq .faq-index-link span {
  color: var(--faq-gold);
  font-weight: 800;
  font-size: 12px;
}

.page-faq .faq-index-link:hover {
  border-left-color: var(--faq-gold);
  color: var(--brand-highlight);
}

/* 联系卡片 */
.page-faq .faq-contact-card {
  background: var(--brand);
  color: var(--text-primary);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-faq .faq-contact-card img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-contact-body {
  padding: 24px;
}

.page-faq .faq-contact-body h2 {
  font-size: 22px;
  margin: 0 0 10px;
  color: var(--white);
  letter-spacing: -.01em;
}

.page-faq .faq-contact-body p {
  margin: 0 0 18px;
  color: rgba(245, 247, 250, .75);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-btn-light {
  display: inline-block;
  background: var(--accent-gold);
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
  padding: 10px 18px;
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 rgba(10, 11, 16, .8);
  transition: transform .12s, box-shadow .12s, background .2s;
}

.page-faq .faq-btn-light:hover {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 rgba(10, 11, 16, .8);
  background: #d9b53b;
}

/* 红色焦点提示卡 */
.page-faq .faq-callout {
  display: flex;
  gap: 14px;
  padding: 20px;
  border: 2px solid var(--faq-red);
  border-left: 6px solid var(--faq-red);
  background: var(--panel);
  color: var(--text-primary);
}

.page-faq .faq-callout-dot {
  flex: none;
  width: 10px;
  height: 10px;
  background: var(--faq-red);
  margin-top: 8px;
}

.page-faq .faq-callout strong {
  display: block;
  font-size: 16px;
  margin-bottom: 6px;
}

.page-faq .faq-callout p {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.page-faq .faq-callout a {
  display: inline-block;
  color: var(--text-primary);
  border: 1px solid var(--line);
  padding: 6px 12px;
  text-decoration: none;
  font-size: 14px;
  transition: border-color .2s, color .2s;
}

.page-faq .faq-callout a:hover {
  border-color: var(--faq-red);
  color: #ffd9d9;
}

/* 页脚注释 */
.page-faq .faq-footnote {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 48px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 滚动显现过渡 */
.page-faq [data-reveal] {
  transition: opacity .24s var(--ease), transform .24s var(--ease);
}

/* ===== 响应式：平板与桌面 ===== */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 48px;
    padding: 88px 32px 64px;
    align-items: center;
  }

  .page-faq .faq-visual img {
    max-width: 360px;
  }

  .page-faq .faq-layout {
    padding: 64px 32px 0;
  }

  .page-faq .faq-section:nth-of-type(even) {
    transform: rotate(.3deg);
  }

  .page-faq .faq-section:nth-of-type(odd) {
    transform: rotate(-.2deg);
  }

  .page-faq .faq-footnote {
    padding: 0 32px 56px;
  }
}

/* ===== 响应式：桌面端宽屏 ===== */
@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 64px;
  }

  .page-faq .faq-sidebar {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}