.page-faq {
  --faq-border: #d5dbe4;
  --faq-bg-soft: #f4f6fa;
  --faq-blue: #0B1F3A;
  --faq-deep: #060D18;
  --faq-gold: #D4AF37;
  --faq-orange: #FF5E3A;
  --faq-shadow: 0 8px 28px rgba(6,13,24,0.05);
  background: var(--color-light-gray);
  padding-bottom: var(--space-xl);
}

/* ===== 页头区域 ===== */
.page-faq .faq-hero-wrap {
  position: relative;
  background:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(135deg, var(--faq-blue) 0%, var(--faq-deep) 100%);
  background-size: 28px 28px, 28px 28px, 100% 100%;
  overflow: hidden;
  padding: 48px 0 96px;
}

.page-faq .faq-hero-wrap::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--faq-gold) 30%, var(--faq-orange) 70%, transparent 100%);
  z-index: 2;
}

.page-faq .faq-hero-wrap::after {
  content: "?";
  position: absolute;
  right: 4%;
  bottom: -36px;
  font-family: var(--font-heading);
  font-size: clamp(12rem, 24vw, 20rem);
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 2px rgba(255,255,255,0.07);
  pointer-events: none;
}

.page-faq .faq-hero-container {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumbs {
  margin: 0 0 48px;
}

.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .breadcrumbs li {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.55);
}

.page-faq .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(255,255,255,0.25);
}

.page-faq .breadcrumbs a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  transition: color 0.15s ease;
}

.page-faq .breadcrumbs a:hover {
  color: var(--color-white);
}

.page-faq .faq-hero-grid {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}

.page-faq .faq-hero-main {
  max-width: 780px;
}

.page-faq .faq-hero-main .page-hero-index {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--faq-gold);
  border: 1px solid rgba(212,175,55,0.45);
  padding: 5px 12px;
  margin-bottom: 24px;
}

.page-faq .faq-hero-title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--color-white);
  margin: 0 0 18px;
}

.page-faq .faq-hero-desc {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.72);
  margin: 0;
}

.page-faq .faq-hero-stats {
  display: flex;
  align-items: flex-end;
  gap: 28px;
  flex-shrink: 0;
  padding-bottom: 6px;
}

.page-faq .faq-hero-stat {
  text-align: right;
}

.page-faq .faq-hero-stat-num {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--faq-orange);
  line-height: 1;
}

.page-faq .faq-hero-stat-label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.5);
  margin-top: 6px;
  text-transform: uppercase;
}

.page-faq .faq-hero-mark {
  font-family: var(--font-heading);
  font-size: 4.6rem;
  font-weight: 700;
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 2px rgba(255,255,255,0.16);
  margin-left: 12px;
}

/* ===== 主体布局 ===== */
.page-faq .faq-layout {
  display: flex;
  align-items: flex-start;
  gap: 48px;
  max-width: var(--content-width);
  margin: -40px auto 0;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

/* ===== 左侧索引栏 ===== */
.page-faq .faq-index {
  flex: 0 0 250px;
  position: sticky;
  top: calc(var(--header-height) + 24px);
  background: var(--color-white);
  border: 1px solid var(--faq-border);
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-index-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 16px 12px;
  position: relative;
}

.page-faq .faq-index-head::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--faq-gold) 0%, transparent 85%);
}

.page-faq .faq-index-number {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--faq-blue);
}

.page-faq .faq-index-line {
  flex: 1;
  height: 1px;
  background: var(--faq-border);
}

.page-faq .faq-search {
  padding: 12px 16px;
  border-bottom: 1px solid var(--faq-border);
}

.page-faq .faq-search input {
  width: 100%;
  padding: 9px 12px;
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--faq-blue);
  border: 1px solid var(--faq-border);
  border-radius: 0;
  background: var(--faq-bg-soft);
  outline: none;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.page-faq .faq-search input::placeholder {
  color: var(--color-gray);
  font-size: 0.78rem;
}

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

.page-faq .index-list {
  list-style: none;
  margin: 0;
  padding: 4px 0;
}

.page-faq .index-list li {
  border-bottom: 1px solid #eef1f5;
}

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

.page-faq .index-list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 16px;
  text-decoration: none;
  color: var(--faq-blue);
  transition: background 0.18s ease, color 0.18s ease;
}

.page-faq .index-list a:hover {
  background: var(--faq-blue);
  color: var(--color-white);
}

.page-faq .index-list-num {
  font-family: var(--font-heading);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--color-gray);
  transition: color 0.18s ease;
}

.page-faq .index-list a:hover .index-list-num {
  color: rgba(255,255,255,0.65);
}

.page-faq .index-list-title {
  flex: 1;
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.3;
}

.page-faq .index-list-tag {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-gray);
  border: 1px solid var(--faq-border);
  padding: 2px 6px;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.page-faq .index-list a:hover .index-list-tag {
  border-color: rgba(255,255,255,0.35);
  color: rgba(255,255,255,0.8);
}

.page-faq .index-list-tag.tag-gold {
  color: var(--faq-gold);
  border-color: rgba(212,175,55,0.5);
}

.page-faq .index-list-tag.tag-orange {
  color: var(--faq-orange);
  border-color: rgba(255,94,58,0.4);
}

.page-faq .faq-index-help {
  padding: 14px 16px 16px;
  border-top: 1px solid var(--faq-border);
  background: var(--faq-bg-soft);
}

.page-faq .faq-index-help p {
  font-size: 0.78rem;
  color: var(--color-gray);
  line-height: 1.65;
  margin: 0 0 10px;
}

.page-faq .faq-index-help .btn {
  width: 100%;
  justify-content: center;
  margin-bottom: 12px;
}

.page-faq .faq-help-note {
  text-align: center;
}

/* ===== 右侧主区 ===== */
.page-faq .faq-main {
  flex: 1;
  min-width: 0;
}

.page-faq .faq-group {
  background: var(--color-white);
  border: 1px solid var(--faq-border);
  box-shadow: var(--faq-shadow);
  padding: 32px 34px;
  margin-bottom: 32px;
}

.page-faq .faq-group .section-index {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
}

.page-faq .faq-group .section-index-number {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--faq-orange);
}

.page-faq .faq-group .section-index-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--faq-border) 0%, transparent 85%);
}

.page-faq .faq-group .section-index > span:last-child {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--faq-blue);
}

.page-faq .faq-items {
  border-top: 1px solid var(--faq-border);
}

/* ===== 手风琴卡片 ===== */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-border);
}

.page-faq .faq-item:last-child {
  border-bottom: none;
}

.page-faq .faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  padding: 18px 4px;
  transition: background 0.15s ease, padding-left 0.15s ease;
  user-select: none;
}

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

.page-faq .faq-item summary:hover {
  background: var(--faq-bg-soft);
  padding-left: 8px;
}

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

.page-faq .faq-item-num {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--faq-blue);
  border: 1px solid var(--faq-border);
  padding: 3px 8px;
  flex-shrink: 0;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-item-title {
  flex: 1;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--faq-blue);
  line-height: 1.5;
}

.page-faq .faq-item-arrow {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.page-faq .faq-item-arrow::before {
  content: "";
  width: 7px;
  height: 7px;
  display: block;
  border-right: 2px solid var(--color-gray);
  border-bottom: 2px solid var(--color-gray);
  transform: rotate(45deg);
  margin-top: -4px;
  transition: transform 0.2s ease, border-color 0.2s ease, margin-top 0.2s ease;
}

.page-faq .faq-item[open] .faq-item-arrow::before {
  transform: rotate(225deg);
  margin-top: 2px;
  border-color: var(--faq-orange);
}

.page-faq .faq-item[open] summary {
  border-bottom: none;
}

.page-faq .faq-item[open] .faq-item-num {
  background: var(--faq-blue);
  border-color: var(--faq-blue);
  color: var(--color-white);
}

/* ===== 答案区域 ===== */
.page-faq .faq-answer {
  background: var(--faq-bg-soft);
  padding: 20px 24px;
  margin: 0 0 18px 24px;
  border-left: 2px solid var(--faq-orange);
}

.page-faq .faq-answer p {
  font-family: var(--font-body);
  font-size: 0.89rem;
  line-height: 1.75;
  color: #374151;
  margin: 0 0 12px;
}

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

.page-faq .faq-answer ol,
.page-faq .faq-answer ul {
  margin: 0 0 12px;
  padding-left: 20px;
}

.page-faq .faq-answer li {
  font-family: var(--font-body);
  font-size: 0.89rem;
  line-height: 1.7;
  color: #374151;
  margin-bottom: 4px;
}

.page-faq .faq-answer ol li::marker {
  color: var(--faq-orange);
  font-weight: 700;
}

.page-faq .faq-answer ul li::marker {
  color: var(--faq-gold);
}

.page-faq .faq-figure {
  margin: 18px 0 0;
  border-top: 1px solid var(--faq-border);
  padding-top: 16px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 400px;
  height: auto;
  border: 1px solid var(--faq-border);
  background: var(--color-white);
}

.page-faq .faq-figure figcaption {
  font-size: 0.76rem;
  color: var(--color-gray);
  padding-top: 8px;
  letter-spacing: 0.02em;
}

/* ===== 底部帮助横幅 ===== */
.page-faq .faq-help {
  background: var(--faq-deep);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--faq-shadow);
  padding: 30px 34px;
}

.page-faq .faq-help-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.page-faq .faq-help-text {
  flex: 1 1 280px;
}

.page-faq .faq-help-text .section-index-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--faq-gold);
  margin-bottom: 10px;
}

.page-faq .faq-help-text h2 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-white);
  margin: 0 0 8px;
}

.page-faq .faq-help-text p {
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.65;
  color: rgba(255,255,255,0.68);
  margin: 0;
}

.page-faq .faq-help-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===== 响应式：平板与手机 ===== */
@media (max-width: 899px) {
  .page-faq .faq-hero-wrap {
    padding: 36px 0 80px;
  }

  .page-faq .faq-hero-stats {
    display: none;
  }

  .page-faq .faq-layout {
    flex-direction: column;
    gap: 28px;
    margin-top: -32px;
  }

  .page-faq .faq-index {
    position: static;
    flex: none;
    width: 100%;
  }

  .page-faq .index-list {
    display: flex;
    overflow-x: auto;
    padding: 6px 0;
  }

  .page-faq .index-list li {
    flex-shrink: 0;
    border-bottom: none;
    border-right: 1px solid #eef1f5;
  }

  .page-faq .index-list a {
    white-space: nowrap;
    padding: 8px 16px;
  }

  .page-faq .index-list-title {
    font-size: 0.78rem;
  }

  .page-faq .index-list-tag {
    display: none;
  }

  .page-faq .faq-search,
  .page-faq .faq-index-help {
    display: none;
  }
}

/* ===== 响应式：窄屏手机 ===== */
@media (max-width: 599px) {
  .page-faq {
    padding-bottom: var(--space-lg);
  }

  .page-faq .breadcrumbs {
    margin-bottom: 32px;
  }

  .page-faq .faq-hero-title {
    font-size: 1.35rem;
  }

  .page-faq .faq-hero-desc {
    font-size: 0.92rem;
  }

  .page-faq .faq-layout {
    padding: 0 14px;
  }

  .page-faq .faq-group {
    padding: 22px 16px;
    margin-bottom: 24px;
  }

  .page-faq .faq-group .section-index {
    flex-wrap: wrap;
  }

  .page-faq .faq-item summary {
    padding: 15px 2px;
    gap: 8px;
  }

  .page-faq .faq-item summary:hover {
    padding-left: 2px;
  }

  .page-faq .faq-item-num {
    display: none;
  }

  .page-faq .faq-item-title {
    font-size: 0.88rem;
  }

  .page-faq .faq-answer {
    margin-left: 0;
    padding: 16px;
  }

  .page-faq .faq-help {
    padding: 24px 18px;
  }

  .page-faq .faq-help-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-faq .faq-help-actions .btn {
    flex: 1;
    justify-content: center;
  }
}

/* ===== 响应式：中等桌面 ===== */
@media (min-width: 900px) and (max-width: 1199px) {
  .page-faq .faq-layout {
    gap: 32px;
  }

  .page-faq .faq-index {
    flex-basis: 220px;
  }
}