.page-faq {
  --faq-sidebar-w: 280px;
  --faq-gap: clamp(20px, 4vw, 44px);
  background-color: var(--paper);
  color: var(--gray);
  font-family: var(--font-serif);
  padding-bottom: 72px;
}

.page-faq .page-shell {
  padding-top: 28px;
}

.page-faq .breadcrumbs {
  margin-bottom: 18px;
}

.page-faq .breadcrumb-list {
  font-family: var(--font-mono);
  font-size: 12px;
}

/* 首屏标题区：无 Hero，直接以目录声明进入正文 */
.page-faq .faq-intro {
  position: relative;
  background:
    linear-gradient(135deg, rgba(201, 160, 99, 0.1) 25%, transparent 25%) 0 0 / 32px 32px,
    var(--ink);
  color: var(--paper);
  padding: clamp(24px, 6vw, 52px) clamp(18px, 5vw, 44px);
  margin-bottom: var(--faq-gap);
  border-left: 6px solid var(--gold);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
}

.page-faq .faq-intro .page-intro-kicker {
  color: var(--gold);
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  font-size: 12px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.page-faq .faq-intro .page-intro-title {
  color: var(--paper);
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.2;
  margin-bottom: 12px;
}

.page-faq .faq-intro .page-intro-lead {
  color: var(--sky);
  font-size: 15px;
  line-height: 1.8;
  max-width: 680px;
  margin: 0;
}

/* 主体双栏布局：移动端单列，桌面端左索引右问答 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

.page-faq .faq-sidebar {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  align-content: start;
  min-width: 0;
}

.page-faq .faq-index {
  background: var(--white);
  border: 1px solid var(--sky);
  border-left: 4px solid var(--gold);
  padding: 18px 16px;
}

.page-faq .faq-index-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--blue);
  text-transform: uppercase;
  margin: 0 0 12px;
}

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

.page-faq .faq-index-list li {
  margin: 0;
}

.page-faq .faq-index-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 4px;
  border-bottom: 1px dashed var(--sky);
  color: var(--gray);
  text-decoration: none;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 14px;
  transition: color 0.18s ease, padding-left 0.18s ease;
}

.page-faq .faq-index-list a:hover {
  color: var(--orange);
  padding-left: 8px;
}

.page-faq .faq-index-list li:last-child a {
  border-bottom: 0;
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  color: var(--gold);
  font-size: 12px;
  flex: 0 0 auto;
}

.page-faq .faq-index-img {
  margin: 0;
  padding: 8px;
  background: var(--ink);
  border: 1px solid var(--ink);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

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

.page-faq .faq-sidebar-card {
  background: var(--ink);
  color: var(--paper);
  padding: 16px 18px;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.page-faq .faq-sidebar-card-title {
  font-family: var(--font-sans);
  font-weight: 800;
  color: var(--gold);
  margin: 0 0 8px;
}

.page-faq .faq-sidebar-card p {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sky);
}

.page-faq .faq-sidebar-card .btn {
  margin-top: 2px;
}

/* 右侧问答内容 */
.page-faq .faq-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  min-width: 0;
}

.page-faq .faq-section {
  scroll-margin-top: calc(var(--header-h) + 20px);
  padding: clamp(18px, 3vw, 28px);
}

.page-faq .faq-section--subscribe {
  background: transparent;
  padding: 0;
}

.page-faq .faq-section--archive {
  background: var(--ink);
  color: var(--paper);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}

.page-faq .faq-section--live {
  background: var(--white);
  border: 1px solid var(--sky);
}

.page-faq .faq-section--privacy {
  background: var(--light-gold);
  border: 1px solid var(--gold);
}

.page-faq .faq-section-head {
  margin-bottom: 18px;
}

.page-faq .faq-section-head .section-title {
  color: var(--gray);
  font-size: clamp(20px, 3vw, 26px);
}

.page-faq .faq-section-head .section-desc {
  color: var(--gray);
  font-size: 13px;
}

.page-faq .faq-section--archive .section-index {
  color: var(--gold);
}

.page-faq .faq-section--archive .faq-section-head .section-title {
  color: var(--paper);
}

.page-faq .faq-section--archive .faq-section-head .section-desc {
  color: var(--sky);
}

.page-faq .section-index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 0.08em;
}

/* 数据流程示意图 */
.page-faq .faq-flow-figure {
  margin: 0 0 18px;
  padding: 10px;
  background: var(--white);
  border: 1px solid var(--sky);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.page-faq .faq-flow-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--sky);
}

.page-faq .faq-flow-figure figcaption {
  padding: 10px 4px 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--blue);
  line-height: 1.6;
}

/* 问答卡片网格 */
.page-faq .faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-card {
  background: var(--white);
  border: 1px solid var(--sky);
  border-left: 4px solid var(--blue);
  border-radius: 0 10px 0 0;
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-card[open] {
  border-left-color: var(--gold);
}

.page-faq .faq-card-summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-sans);
}

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

.page-faq .faq-card-summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--blue);
  font-weight: 700;
  transition: color 0.18s ease;
}

.page-faq .faq-card[open] .faq-card-summary::after {
  content: "–";
  color: var(--gold);
}

.page-faq .faq-card[open] .faq-card-summary {
  border-bottom: 1px solid var(--sky);
}

.page-faq .faq-card-summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -2px;
}

.page-faq .faq-card-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
  flex: 0 0 auto;
}

.page-faq .faq-card-title {
  margin: 0;
  font-size: 15px;
  line-height: 1.5;
  font-weight: 800;
}

.page-faq .faq-card-body {
  padding: 12px 16px 16px 40px;
  color: var(--gray);
  font-size: 14px;
  line-height: 1.75;
}

.page-faq .faq-card-body p {
  margin: 0 0 10px;
}

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

.page-faq .faq-card-body a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 10px;
}

.page-faq .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  padding: 2px 8px;
  border-radius: 2px;
}

/* 深色区块：索引与归档 */
.page-faq .faq-section--archive .faq-card {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(216, 224, 234, 0.35);
  border-left: 4px solid var(--blue);
}

.page-faq .faq-section--archive .faq-card[open] {
  background: rgba(255, 255, 255, 0.12);
  border-left-color: var(--gold);
}

.page-faq .faq-section--archive .faq-card[open] .faq-card-summary {
  border-bottom-color: rgba(216, 224, 234, 0.25);
}

.page-faq .faq-section--archive .faq-card-summary::after {
  color: var(--gold);
}

.page-faq .faq-section--archive .faq-card-title {
  color: var(--white);
}

.page-faq .faq-section--archive .faq-card-body {
  color: var(--sky);
}

.page-faq .faq-section--archive .faq-card-body a {
  color: var(--light-gold);
}

.page-faq .faq-section--archive .tag {
  background: rgba(255, 255, 255, 0.15);
  color: var(--white);
  border: 0;
  padding-left: 8px;
}

.page-faq .faq-section--archive .tag--orange {
  box-shadow: inset 3px 0 0 var(--orange);
}

.page-faq .faq-section--archive .tag--green {
  box-shadow: inset 3px 0 0 var(--green);
}

.page-faq .faq-section--archive .tag--gold {
  box-shadow: inset 3px 0 0 var(--gold);
}

/* 浅色区块：实时比分与小屏 */
.page-faq .faq-section--live .faq-card {
  background: var(--paper);
}

/* 淡金区块：数据与隐私 */
.page-faq .faq-section--privacy .faq-card {
  background: var(--white);
}

/* 桌面端：左栏固定索引，右栏内容流 */
@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-sidebar-w) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-faq .faq-grid {
    gap: 14px;
  }
}