.page-faq {
  background: var(--color-rice);
  color: var(--color-ink);
  padding-block: 40px;
}

/* 面包屑 */
.page-faq .breadcrumb {
  margin-bottom: 24px;
}

/* 页头声明 */
.page-faq-masthead {
  border-left: 8px solid var(--color-primary);
  padding-left: 22px;
  margin: 8px 0 26px;
}

.page-faq-masthead::after {
  content: "";
  display: block;
  width: 128px;
  height: 6px;
  background: var(--color-gold);
  margin-top: 22px;
}

.page-faq-masthead .display-title {
  font-family: var(--font-display);
  font-size: clamp(30px, 5vw, 52px);
  font-weight: 900;
  line-height: 1.15;
  margin: 0 0 14px;
  color: var(--color-primary);
  max-width: 16em;
}

.page-faq-masthead .lead {
  max-width: 640px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-grey);
  margin: 0;
}

.page-faq-site-note {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--color-lapis);
  margin-top: 14px;
}

/* 主题标签跳转 */
.page-faq-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0 34px;
  padding: 14px;
  background: var(--color-white);
  border: var(--border-w) solid var(--border-color);
  box-shadow: var(--shadow-brutal);
}

.page-faq-tab {
  padding: 9px 16px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-lapis);
  background: var(--color-rice);
  border: 2px solid var(--border-color);
  box-shadow: 2px 3px 0 var(--border-color);
  text-decoration: none;
  transition: transform .16s ease, box-shadow .16s ease, color .16s ease, background .16s ease;
}

.page-faq-tab:hover,
.page-faq-tab:focus-visible {
  background: var(--color-gold);
  color: var(--color-ink);
  transform: translate(-1px, -2px);
  box-shadow: 4px 5px 0 var(--border-color);
}

.page-faq-tab:focus-visible {
  outline: 2px solid var(--color-lapis);
  outline-offset: 3px;
}

/* 双栏布局 */
.page-faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  align-items: start;
}

@media (min-width: 920px) {
  .page-faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 42px;
  }
}

/* 左侧问题目录 */
.page-faq-index {
  border: var(--border-w) solid var(--border-color);
  background: var(--color-white);
  box-shadow: var(--shadow-brutal);
  padding: 20px 18px;
}

@media (min-width: 920px) {
  .page-faq-index {
    position: sticky;
    top: 60px;
  }
}

.page-faq-index-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 900;
  color: var(--color-primary);
  border-bottom: 3px solid var(--color-gold);
  padding-bottom: 10px;
  margin: 0 0 16px;
}

.page-faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq-index-list > li {
  border-bottom: 1px dashed rgba(107, 105, 105, 0.3);
  padding-bottom: 14px;
  margin-bottom: 14px;
}

.page-faq-index-list > li:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-faq-index-cat {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 14px;
  color: var(--color-lapis);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color .16s ease;
}

.page-faq-index-cat:hover {
  border-bottom-color: var(--color-gold);
}

.page-faq-index-list ul {
  list-style: none;
  margin: 10px 0 0;
  padding: 0 0 0 12px;
  border-left: 2px solid var(--color-primary);
}

.page-faq-index-list ul li {
  margin-top: 8px;
}

.page-faq-index-list ul a {
  font-size: 13px;
  color: var(--color-grey);
  text-decoration: none;
  line-height: 1.5;
  display: inline-block;
}

.page-faq-index-list ul a:hover {
  color: var(--color-primary);
}

/* 右侧章节容器 */
.page-faq-section {
  padding-bottom: 40px;
  margin-bottom: 40px;
  border-bottom: 2px dashed rgba(107, 105, 105, 0.28);
}

.page-faq-section:last-of-type {
  border-bottom: none;
}

.page-faq-section-header {
  margin-bottom: 22px;
}

.page-faq-section-header .section-num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 800;
  line-height: 1;
  color: var(--color-terracotta);
  display: block;
}

.page-faq-section-header .section-title {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 900;
  line-height: 1.3;
  margin: 10px 0 0;
  color: var(--color-ink);
}

.page-faq-section-header .section-sub {
  margin: 8px 0 0;
  color: var(--color-grey);
  font-size: 15px;
}

/* 第一组图文网格 */
.page-faq-section-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

@media (min-width: 900px) {
  .page-faq-section-grid {
    grid-template-columns: minmax(0, 1fr) 360px;
    align-items: start;
  }
}

/* 图片框 */
.page-faq-figure {
  margin: 0;
  padding: 12px;
  background: var(--color-white);
  border: var(--border-w) solid var(--border-color);
  box-shadow: var(--shadow-brutal);
}

.page-faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq-figure figcaption {
  margin-top: 10px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-grey);
  letter-spacing: 0.05em;
}

.page-faq-figure--shield {
  margin-top: 28px;
}

/* 手风琴答案列表 */
.page-faq-list {
  display: grid;
  gap: 16px;
}

.page-faq-item {
  background: var(--color-white);
  border: var(--border-w) solid var(--border-color);
  box-shadow: var(--shadow-brutal);
  transition: box-shadow .16s ease, border-color .16s ease;
}

.page-faq-item[open] {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-brutal-hover);
}

.page-faq-item summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-ink);
}

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

.page-faq-item summary:hover {
  background: rgba(255, 215, 0, 0.1);
}

.page-faq-item summary:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: -8px;
}

.page-faq-qnum {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  color: var(--color-white);
  background: var(--color-terracotta);
  border-radius: 50%;
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 1px 2px 0 rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
}

.page-faq-toggle {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  font-weight: 900;
  flex-shrink: 0;
  color: var(--color-primary);
  transition: transform .18s ease, background .18s ease;
}

.page-faq-toggle::after {
  content: "+";
}

.page-faq-item[open] .page-faq-toggle {
  background: var(--color-gold);
  transform: rotate(45deg);
}

/* 答案正文 */
.page-faq-answer {
  padding: 14px 20px 22px 62px;
  border-top: 1px dashed rgba(107, 105, 105, 0.25);
}

.page-faq-answer p,
.page-faq-answer li {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-grey);
}

.page-faq-answer p {
  margin: 0 0 12px;
}

.page-faq-answer p:last-child {
  margin-bottom: 0;
}

.page-faq-answer code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--color-rice);
  border: 1px solid rgba(107, 105, 105, 0.3);
  padding: 2px 6px;
  border-radius: 3px;
  word-break: break-all;
  color: var(--color-lapis);
}

.page-faq-answer a {
  color: var(--color-lapis);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq-answer a:hover {
  color: var(--color-primary);
}

/* 排查步骤区：米白底纹 + 等宽代码 */
.page-faq-steps {
  margin: 12px 0 16px;
  padding: 14px 18px 14px 26px;
  background: var(--color-rice);
  border: 1px solid rgba(107, 105, 105, 0.25);
  border-left: 4px solid var(--color-terracotta);
  border-radius: 4px;
}

.page-faq-steps li + li {
  margin-top: 8px;
}

/* 底部帮助引导 */
.page-faq-help {
  margin-top: 40px;
  padding: 28px;
  background: var(--color-lapis);
  color: var(--color-white);
  border: var(--border-w) solid var(--border-color);
  box-shadow: var(--shadow-brutal);
}

.page-faq-help h2 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 900;
  color: var(--color-white);
  margin: 0 0 8px;
}

.page-faq-help p {
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.7;
  margin: 0 0 20px;
  max-width: 54ch;
}

.page-faq-help a:not(.btn) {
  color: var(--color-gold);
  font-weight: 700;
}

.page-faq-help .btn {
  margin-right: 10px;
}

.page-faq-help .btn--primary {
  background: var(--color-primary);
  border-color: var(--color-white);
}

.page-faq-help .btn--outline {
  background: transparent;
  border-color: var(--color-white);
  color: var(--color-white);
  box-shadow: 3px 4px 0 var(--color-white);
}

.page-faq-help .btn--outline:hover {
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 4px 6px 0 var(--color-white);
}

/* 窄屏适配 */
@media (max-width: 599px) {
  .page-faq {
    padding-block: 24px;
  }

  .page-faq-tabs {
    padding: 10px;
    gap: 8px;
    margin: 22px 0 26px;
  }

  .page-faq-tab {
    padding: 8px 12px;
    font-size: 13px;
  }

  .page-faq-index {
    padding: 16px 14px;
  }

  .page-faq-section {
    padding-bottom: 30px;
    margin-bottom: 30px;
  }

  .page-faq-item summary {
    padding: 14px;
    gap: 10px;
  }

  .page-faq-answer {
    padding: 12px 14px 18px;
  }

  .page-faq-steps {
    padding: 12px 12px 12px 18px;
  }

  .page-faq-help {
    padding: 20px;
  }
}