.page-faq {
  --faq-rail-width: 264px;
  --faq-gold: var(--color-gold);
  background: var(--color-paper);
}

.page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.page-faq [data-reveal="visible"] {
  opacity: 1;
  transform: none;
}

/* ===================== 首屏框景 ===================== */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(rgba(11, 29, 58, 0.94), rgba(11, 29, 58, 0.94)),
    repeating-linear-gradient(90deg, rgba(245, 242, 235, 0.06) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(0deg, rgba(245, 242, 235, 0.06) 0 1px, transparent 1px 28px);
  background-color: var(--color-deep);
  border-bottom: 5px solid var(--color-ink);
  padding: 40px 0 46px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 14px;
  right: 0;
  left: 0;
  height: 6px;
  background: var(--color-gold);
  clip-path: polygon(0 0, 100% 0, calc(100% - 120px) 100%, 0 100%);
  opacity: 0.9;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 220px;
  height: 220px;
  background:
    radial-gradient(circle at center, rgba(255, 183, 3, 0.16) 0 12px, transparent 13px),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.06) 0 2px, transparent 2px 14px);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

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

.page-faq .faq-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 22px;
  font-size: 13px;
  color: rgba(245, 242, 235, 0.62);
}

.page-faq .faq-breadcrumbs a {
  color: var(--color-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 183, 3, 0.4);
}

.page-faq .faq-breadcrumbs .crumb-sep {
  color: rgba(245, 242, 235, 0.4);
}

.page-faq .faq-hero-grid {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.page-faq .faq-hero-kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--color-gold);
  color: var(--color-ink);
  border: 2px solid var(--color-ink);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.4);
  padding: 6px 12px;
  margin-bottom: 18px;
}

.page-faq .faq-hero-title {
  font-family: var(--font-serif);
  font-size: clamp(30px, 5vw, 50px);
  line-height: 1.08;
  letter-spacing: 0;
  color: var(--color-paper);
  max-width: 680px;
  margin: 0 0 14px;
}

.page-faq .faq-hero-lead {
  font-size: 16px;
  line-height: 1.7;
  color: rgba(245, 242, 235, 0.78);
  max-width: 52ch;
  margin: 0;
}

.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 28px;
  max-width: 460px;
}

.page-faq .faq-hero-stat {
  border: 2px solid rgba(245, 242, 235, 0.3);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  padding: 12px 14px;
}

.page-faq .faq-hero-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-gold);
}

.page-faq .faq-hero-stat-label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: rgba(245, 242, 235, 0.72);
}

/* ===================== 搜索面板 ===================== */
.page-faq .faq-search-panel {
  max-width: 440px;
}

.page-faq .faq-search-clip {
  position: relative;
  background: var(--color-paper);
  border: 3px solid var(--color-ink);
  border-radius: var(--radius-md);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.4);
  padding: 20px 20px 16px;
}

.page-faq .faq-search-clip::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 20px;
  width: 48px;
  height: 10px;
  background: var(--color-gold);
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.page-faq .faq-search-label {
  display: inline-block;
  background: var(--color-ink);
  color: var(--color-paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 10px;
  margin-bottom: 12px;
}

.page-faq .faq-search-input {
  width: 100%;
  border: 2px solid var(--color-ink);
  border-radius: var(--radius-sm);
  background: var(--color-cloud);
  color: var(--color-ink);
  padding: 14px 16px;
  font-size: 16px;
  transition: background 0.2s ease, box-shadow 0.2s ease;
  appearance: none;
}

.page-faq .faq-search-input:focus {
  outline: 3px solid var(--color-gold);
  outline-offset: 2px;
  background: var(--color-paper);
}

.page-faq .faq-search-tip {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--color-slate);
  line-height: 1.5;
}

/* ===================== 斜切分隔 ===================== */
.page-faq .faq-diagonal {
  height: 20px;
  border-top: 4px solid var(--color-ink);
  border-bottom: 4px solid var(--color-ink);
  background: repeating-linear-gradient(135deg, var(--color-ink) 0 18px, var(--color-gold) 18px 36px);
}

.page-faq .faq-diagonal-reverse {
  background: repeating-linear-gradient(-135deg, var(--color-ink) 0 18px, var(--color-gold) 18px 36px);
}

/* ===================== 主体布局 ===================== */
.page-faq .faq-body {
  padding: 34px 0 28px;
}

.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

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

.page-faq .faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

/* ===================== 分类轴 ===================== */
.page-faq .faq-cat-rail {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-faq .faq-cat-legend {
  display: flex;
  align-items: center;
  gap: 12px;
  border: 3px solid var(--color-ink);
  background: var(--color-paper);
  box-shadow: var(--shadow-soft);
  padding: 12px;
}

.page-faq .faq-cat-legend-img {
  width: 72px;
  height: 72px;
  object-fit: cover;
  flex: 0 0 auto;
  background: var(--color-deep);
}

.page-faq .faq-cat-legend-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-cat-legend-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 16px;
  color: var(--color-ink);
}

.page-faq .faq-cat-legend-sub {
  font-size: 12px;
  color: var(--color-slate);
}

.page-faq .faq-cat-nav {
  display: flex;
  gap: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 3px solid var(--color-ink);
  background: var(--color-ink);
  box-shadow: var(--shadow-soft);
  scrollbar-width: thin;
}

.page-faq .faq-cat-btn {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 148px;
  border: 0;
  border-right: 2px solid var(--color-ink);
  background: var(--color-paper);
  color: var(--color-ink);
  padding: 14px 16px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 15px;
  text-align: left;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.page-faq .faq-cat-btn:hover {
  background: var(--color-cloud);
}

.page-faq .faq-cat-btn.is-active {
  background: var(--color-ink);
  color: var(--color-paper);
}

.page-faq .faq-cat-num {
  font-family: var(--font-mono);
  font-size: 12px;
  border: 1px solid currentColor;
  padding: 2px 4px;
  line-height: 1;
}

.page-faq .faq-cat-btn.is-active .faq-cat-num {
  color: var(--color-gold);
  border-color: var(--color-gold);
}

.page-faq .faq-cat-help {
  border: 3px solid var(--color-ink);
  background: var(--color-deep);
  color: var(--color-paper);
  box-shadow: var(--shadow-soft);
  padding: 16px;
}

.page-faq .faq-cat-help-title {
  display: block;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.page-faq .faq-cat-help-text {
  margin: 0 0 10px;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(245, 242, 235, 0.72);
}

.page-faq .faq-cat-help-link {
  display: inline-block;
  color: var(--color-gold);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  border-bottom: 2px solid var(--color-gold);
  padding-bottom: 2px;
}

/* ===================== 问答分类区块 ===================== */
.page-faq .faq-category {
  border-top: 6px solid var(--color-ink);
  padding-top: 16px;
}

.page-faq .faq-category-download {
  --cat-color: var(--color-gold);
}

.page-faq .faq-category-data {
  --cat-color: var(--color-green);
}

.page-faq .faq-category-review {
  --cat-color: var(--color-flame);
}

.page-faq .faq-category-account {
  --cat-color: var(--color-deep);
}

.page-faq .faq-category-contact {
  --cat-color: var(--color-gold);
}

.page-faq .faq-category-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.page-faq .faq-category-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-ink);
  margin: 0;
}

.page-faq .faq-category-index {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  border: 2px solid var(--cat-color);
  color: var(--cat-color);
  padding: 2px 6px;
}

.page-faq .faq-category-count {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-slate);
  background: var(--color-cloud);
  border-radius: 100px;
  padding: 4px 10px;
  white-space: nowrap;
}

/* ===================== 折叠问答项 ===================== */
.page-faq .faq-item {
  display: block;
  border: 2px solid var(--color-ink);
  border-radius: var(--radius-sm);
  background: var(--color-paper);
  box-shadow: 3px 3px 0 rgba(10, 10, 10, 0.22);
  margin-bottom: 10px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-item:hover {
  transform: translateY(-2px);
  box-shadow: 5px 5px 0 rgba(10, 10, 10, 0.35);
}

.page-faq .faq-item[open] {
  box-shadow: 6px 6px 0 rgba(10, 10, 10, 0.4);
}

.page-faq .faq-q {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background 0.2s ease;
}

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

.page-faq .faq-q:hover {
  background: var(--color-cloud);
}

.page-faq .faq-item[open] .faq-q {
  background: var(--color-deep);
  color: var(--color-paper);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.page-faq .faq-q-text {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
}

.page-faq .faq-q-icon {
  position: relative;
  flex: 0 0 26px;
  width: 26px;
  height: 26px;
  border: 2px solid currentColor;
  border-radius: 50%;
  transition: border-color 0.2s ease;
}

.page-faq .faq-q-icon::before,
.page-faq .faq-q-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: var(--color-gold);
  border-radius: 2px;
}

.page-faq .faq-q-icon::before {
  width: 10px;
  height: 2px;
}

.page-faq .faq-q-icon::after {
  width: 2px;
  height: 10px;
  transition: opacity 0.15s ease;
}

.page-faq .faq-item[open] .faq-q-icon::after {
  opacity: 0;
}

.page-faq .faq-a {
  border-top: 1px dashed var(--color-slate);
  background: var(--color-cloud);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  padding: 18px 20px 22px;
  color: var(--color-slate);
  font-size: 15.5px;
  line-height: 1.75;
}

.page-faq .faq-a p {
  margin: 0;
}

.page-faq .faq-a a {
  color: var(--color-flame);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===================== 联系横幅 ===================== */
.page-faq .faq-contact-band {
  position: relative;
  overflow: hidden;
  background: var(--color-deep);
  color: var(--color-paper);
  border-top: 4px solid var(--color-ink);
  padding: 42px 0 48px;
}

.page-faq .faq-contact-band::before {
  content: "FAQ";
  position: absolute;
  right: -30px;
  bottom: -80px;
  font-family: var(--font-serif);
  font-size: 220px;
  line-height: 1;
  color: rgba(255, 255, 255, 0.04);
  pointer-events: none;
}

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

.page-faq .faq-contact-grid {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-faq .faq-contact-kicker {
  display: inline-block;
  color: var(--color-gold);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-bottom: 2px solid var(--color-gold);
  padding-bottom: 4px;
  margin-bottom: 16px;
}

.page-faq .faq-contact-heading {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.15;
  color: var(--color-paper);
  margin: 0 0 16px;
  max-width: 600px;
}

.page-faq .faq-contact-text {
  font-size: 16px;
  line-height: 1.75;
  color: rgba(245, 242, 235, 0.78);
  margin: 0 0 22px;
  max-width: 58ch;
}

.page-faq .faq-contact-text a {
  color: var(--color-gold);
  font-weight: 700;
}

.page-faq .faq-email-strong {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-gold);
}

.page-faq .faq-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.page-faq .faq-contact-art {
  margin: 0;
}

.page-faq .faq-contact-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--color-deep);
  border: 3px solid var(--color-paper);
  border-radius: var(--radius-md);
  box-shadow: 8px 8px 0 rgba(255, 183, 3, 0.55);
}

.page-faq .faq-contact-figcap {
  margin-top: 12px;
  font-size: 12px;
  color: rgba(245, 242, 235, 0.6);
}

/* ===================== 桌面端 ===================== */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 48px 0 58px;
  }

  .page-faq .faq-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 400px;
    gap: 56px;
    align-items: center;
  }

  .page-faq .faq-hero-title {
    font-size: 50px;
  }

  .page-faq .faq-search-clip {
    padding: 26px 24px 20px;
  }

  .page-faq .faq-body {
    padding: 48px 0 36px;
  }

  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: var(--faq-rail-width) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-cat-rail {
    position: sticky;
    top: 100px;
  }

  .page-faq .faq-cat-legend {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }

  .page-faq .faq-cat-legend-img {
    width: 100px;
    height: 100px;
  }

  .page-faq .faq-cat-nav {
    flex-direction: column;
    overflow: visible;
  }

  .page-faq .faq-cat-btn {
    min-width: 0;
    border-right: 0;
    border-bottom: 2px solid var(--color-ink);
  }

  .page-faq .faq-cat-btn:last-child {
    border-bottom: 0;
  }

  .page-faq .faq-contact-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
    align-items: center;
  }

  .page-faq .faq-contact-band {
    padding: 56px 0 60px;
  }
}