.page-faq {
  --faq-gold-bg: #FDF7EB;
  --faq-cat-border: rgba(255, 255, 255, .12);
  --faq-cat-grid: rgba(255, 255, 255, .04);
  --faq-cat-muted: rgba(255, 255, 255, .64);
  display: block;
}

/* ============ 页首・帮助中心 ============ */
.page-faq .faq-hero {
  position: relative;
  padding: var(--space-4) 0 var(--space-6);
  background-color: var(--light-gray);
  background-image:
    linear-gradient(45deg, rgba(11, 27, 58, .045) 1px, transparent 1px),
    linear-gradient(-45deg, rgba(11, 27, 58, .045) 1px, transparent 1px);
  background-size: 28px 28px;
  border-bottom: 1px solid var(--border-blue);
}

.page-faq .faq-hero::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--china-red) 0 45%, var(--gold) 45% 55%, transparent 55%);
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: var(--space-5);
  align-items: center;
  padding-top: var(--space-5);
}

.page-faq .faq-hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
}

.page-faq .faq-hero-copy .tag-pill {
  letter-spacing: .06em;
}

.page-faq .faq-hero-copy h1 {
  margin: 0;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.15;
  font-weight: 900;
  color: var(--deep-blue);
  letter-spacing: .02em;
}

.page-faq .faq-hero-copy .page-subtitle {
  margin: 0;
  max-width: 480px;
  line-height: 1.7;
  color: rgba(26, 29, 38, .75);
}

.page-faq .faq-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  margin-top: var(--space-2);
}

.page-faq .faq-hero-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-right: var(--space-3);
  border-right: 1px solid rgba(11, 27, 58, .14);
}

.page-faq .faq-hero-stat:last-child {
  border-right: 0;
  padding-right: 0;
}

.page-faq .faq-hero-stat .data-number {
  font-size: 28px;
}

.page-faq .faq-hero-stat > span:last-child {
  font-size: 12px;
  color: rgba(26, 29, 38, .6);
}

.page-faq .faq-hero-figure {
  position: relative;
  margin: 0;
  padding: var(--space-4);
  display: grid;
  justify-items: center;
  gap: var(--space-2);
  background: linear-gradient(135deg, var(--deep-blue), var(--deep-blue-2));
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: var(--radius-md);
  background: var(--white);
}

.page-faq .faq-hero-figure .text-note {
  color: rgba(255, 255, 255, .65);
}

.page-faq .faq-hero-vert {
  position: absolute;
  top: -12px;
  right: var(--space-3);
  writing-mode: vertical-rl;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: .34em;
  color: var(--china-red);
  background: var(--white);
  padding: var(--space-2) 6px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

/* ============ 章节通用 ============ */
.page-faq .faq-section {
  padding: var(--space-6) 0;
  scroll-margin-top: 72px;
}

.page-faq .faq-hot-section {
  background: var(--white);
}

.page-faq .faq-support-section {
  background: var(--light-gray);
}

.page-faq .faq-category-section {
  padding: var(--space-7) 0;
  background-color: var(--deep-blue);
  background-image:
    radial-gradient(circle at 86% 12%, rgba(212, 175, 55, .1) 0, transparent 320px),
    linear-gradient(var(--faq-cat-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-cat-grid) 1px, transparent 1px);
  background-size: auto, 32px 32px, 32px 32px;
}

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

.page-faq .faq-category-section .section-num {
  color: var(--gold);
}

.page-faq .faq-category-section .section-rule {
  background: linear-gradient(90deg, var(--gold), transparent);
}

/* ============ 热门问题 ============ */
.page-faq .faq-hot-list {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

/* ============ 折叠手风琴 ============ */
.page-faq .faq-item {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.page-faq .faq-item[open] {
  border-color: rgba(212, 175, 55, .55);
  box-shadow: var(--shadow-md);
}

.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--deep-blue);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  user-select: none;
  transition: background var(--transition-fast);
}

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

.page-faq .faq-item summary:hover {
  background: #F7F8FB;
}

.page-faq .faq-item summary:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

.page-faq .faq-item-num {
  flex-shrink: 0;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 14px;
  color: var(--china-red);
}

.page-faq .faq-item-title {
  flex: 1;
}

.page-faq .faq-item-mark {
  position: relative;
  flex-shrink: 0;
  width: 22px;
  height: 22px;
}

.page-faq .faq-item-mark::before,
.page-faq .faq-item-mark::after {
  content: '';
  position: absolute;
  background: var(--deep-blue);
  border-radius: 2px;
  transition: transform var(--transition-fast);
}

.page-faq .faq-item-mark::before {
  top: 10px;
  left: 2px;
  right: 2px;
  height: 2px;
}

.page-faq .faq-item-mark::after {
  left: 10px;
  top: 2px;
  bottom: 2px;
  width: 2px;
}

.page-faq .faq-item[open] .faq-item-mark::after {
  transform: scaleY(0);
}

.page-faq .faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-base);
}

.page-faq .faq-item[open] .faq-answer {
  grid-template-rows: 1fr;
}

.page-faq .faq-answer-inner {
  overflow: hidden;
  min-height: 0;
  padding: 0 var(--space-4);
  background: var(--faq-gold-bg);
  transition: padding var(--transition-base);
}

.page-faq .faq-item[open] .faq-answer-inner {
  padding: var(--space-3) var(--space-4) var(--space-4);
}

.page-faq .faq-answer-inner p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--dark-gray);
}

.page-faq .faq-answer-inner p + p {
  margin-top: var(--space-2);
}

.page-faq .faq-answer-inner a {
  color: var(--bright-blue);
  font-weight: 600;
}

/* ============ 分类问题 ============ */
.page-faq .faq-cat-layout {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.page-faq .faq-cat-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--faq-cat-border);
  border-radius: var(--radius-lg);
}

.page-faq .faq-cat-nav-title {
  flex: 1 1 100%;
  margin: 0 0 var(--space-1);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--faq-cat-muted);
}

.page-faq .faq-cat-nav-item {
  text-decoration: none;
  color: var(--white);
  font-weight: 700;
  font-size: 14px;
  padding: var(--space-1) var(--space-2);
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.page-faq .faq-cat-nav-item span {
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--gold);
  margin-right: 4px;
}

.page-faq .faq-cat-nav-item:hover,
.page-faq .faq-cat-nav-item:focus-visible {
  border-color: rgba(212, 175, 55, .6);
  background: rgba(212, 175, 55, .08);
  outline: none;
}

.page-faq .faq-cat-nav-ghost {
  margin-left: auto;
  font-size: 13px;
  padding: var(--space-1) var(--space-3);
}

.page-faq .faq-cat-block {
  scroll-margin-top: 84px;
  border-top: 1px solid var(--faq-cat-border);
  padding-top: var(--space-4);
}

.page-faq .faq-cat-block + .faq-cat-block {
  margin-top: var(--space-5);
}

.page-faq .faq-cat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.page-faq .faq-cat-name {
  margin: 0;
  font-size: 18px;
  font-weight: 900;
}

.page-faq .faq-cat-name .tag-pill {
  font-size: 13px;
  letter-spacing: .06em;
}

.page-faq .faq-cat-count {
  font-size: 13px;
  color: var(--faq-cat-muted);
}

.page-faq .faq-stack {
  display: grid;
  gap: var(--space-3);
}

/* ============ 联系支持 ============ */
.page-faq .faq-support-layout {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-5);
}

.page-faq .faq-support-panel {
  height: fit-content;
}

.page-faq .faq-support-item {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3) 0;
}

.page-faq .faq-support-item + .faq-support-item {
  border-top: var(--border-light);
}

.page-faq .faq-support-item .contact-label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--china-red);
}

.page-faq .faq-support-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--deep-blue);
  word-break: break-word;
}

.page-faq .faq-support-note {
  margin: var(--space-3) 0 0;
}

.page-faq .faq-support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-faq .faq-flow-figure {
  margin: 0;
  padding: var(--space-4);
  display: grid;
  gap: var(--space-3);
  background: var(--white);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-flow-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

.page-faq .faq-flow-steps {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: 0;
}

.page-faq .faq-flow-step {
  flex: 1 1 140px;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--light-gray);
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  color: var(--dark-gray);
}

.page-faq .faq-step-num {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-pill);
  background: var(--china-red);
  color: var(--white);
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 14px;
}

/* ============ 桌面端布局 ============ */
@media (min-width: 768px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: 1.05fr .95fr;
  }

  .page-faq .faq-hot-list {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
  }

  .page-faq .faq-support-layout {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding-top: var(--space-5);
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: 1.15fr .85fr;
  }

  .page-faq .faq-hero-vert {
    top: auto;
    right: -14px;
    bottom: 28px;
  }

  .page-faq .faq-cat-layout {
    grid-template-columns: 240px 1fr;
    gap: var(--space-6);
    align-items: start;
  }

  .page-faq .faq-cat-nav {
    position: sticky;
    top: 104px;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
  }

  .page-faq .faq-cat-nav-title {
    margin-bottom: var(--space-2);
  }

  .page-faq .faq-cat-nav-item {
    padding: var(--space-2);
  }

  .page-faq .faq-cat-nav-ghost {
    margin-left: 0;
    margin-top: var(--space-2);
  }
}