.page-faq {
  --faq-icon-size: 44px;
  --faq-item-pad: 20px;
  --faq-answer-indent: 76px;
  overflow-x: hidden;
}

/* ===== Hero 区 ===== */
.page-faq .faq-hero {
  background: var(--c-ink);
  color: var(--c-cream);
  padding: calc(var(--header-h-m) + 28px) 0 var(--space-section);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--c-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-line) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.4;
  pointer-events: none;
}

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

.page-faq .faq-hero__grid {
  display: grid;
  gap: 40px;
  margin-top: 40px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(40px, 7vw, 68px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 16px 0 18px;
  color: var(--c-cream);
}

.page-faq .faq-hero__lead {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: rgba(245, 243, 239, 0.82);
  max-width: 560px;
  margin: 0 0 32px;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-faq .faq-hero__stats .folio-stat {
  flex: 1 1 130px;
  background: rgba(255, 255, 255, 0.05);
  padding: 16px 14px;
  color: var(--c-cream);
}

.page-faq .faq-hero__stats .folio-stat__value {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 28px;
  display: block;
  color: var(--c-accent);
}

.page-faq .faq-hero__stats .folio-stat__label {
  font-family: var(--font-body);
  font-size: 13px;
  color: rgba(245, 243, 239, 0.7);
  display: block;
  margin-top: 6px;
}

.page-faq .faq-hero__visual-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-faq .faq-hero__visual {
  width: 100%;
  max-width: 340px;
  height: auto;
  display: block;
}

/* ===== 问题分类区 ===== */
.page-faq .faq-categories {
  background: var(--c-cream);
  padding: var(--space-section) 0;
}

.page-faq .faq-categories__grid {
  display: grid;
  gap: 36px;
}

.page-faq .faq-categories h2,
.page-faq .faq-common h2,
.page-faq .faq-contact h2,
.page-faq .faq-guide h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  color: var(--c-ink);
  margin: 14px 0 12px;
}

.page-faq .faq-categories__desc {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-muted);
  max-width: 480px;
  margin-bottom: 24px;
}

.page-faq .faq-categories__media {
  position: relative;
}

.page-faq .faq-categories__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--c-border);
  background: var(--c-paper);
}

/* ===== 常见问题区 ===== */
.page-faq .faq-common {
  background: var(--c-paper);
  padding: var(--space-section) 0;
}

.page-faq .faq-common__head {
  margin-bottom: 40px;
}

.page-faq .faq-common__head > p {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--c-muted);
  margin: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h-m) + 24px);
  margin-top: 52px;
  border-left: 3px solid transparent;
  padding-left: 0;
  transition: border-color 0.2s var(--ease), padding-left 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-group:target {
  border-left-color: var(--c-accent);
  padding-left: 16px;
  background: linear-gradient(90deg, rgba(255, 107, 53, 0.06), transparent);
}

.page-faq .faq-group__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 22px;
  color: var(--c-ink);
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 2px solid var(--c-ink);
  padding-bottom: 10px;
  margin: 0 0 22px;
}

.page-faq .faq-group__num {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 15px;
  color: var(--c-accent);
}

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

.page-faq .faq-item {
  background: var(--c-paper);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-teal);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--c-accent);
  box-shadow: var(--shadow);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px var(--faq-item-pad);
  cursor: pointer;
  list-style: none;
  transition: background 0.2s var(--ease);
}

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

.page-faq .faq-item__summary:hover {
  background: rgba(10, 31, 68, 0.03);
}

.page-faq .faq-item__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-data);
  font-weight: 400;
  font-size: 26px;
  line-height: 1;
  color: var(--c-accent);
  transition: transform 0.2s var(--ease);
  flex-shrink: 0;
}

.page-faq .faq-item[open] .faq-item__summary::after {
  transform: rotate(45deg);
}

.page-faq .faq-item[open] .faq-item__summary {
  border-bottom: 1px solid var(--c-border);
}

.page-faq .faq-item__icon {
  flex-shrink: 0;
  width: var(--faq-icon-size);
  height: var(--faq-icon-size);
  padding: 11px;
  background: var(--c-ink);
  color: var(--c-cream);
}

.page-faq .faq-group--data .faq-item__icon {
  background: var(--c-ink-soft);
}

.page-faq .faq-group--feedback .faq-item__icon {
  background: var(--c-ink);
}

.page-faq .faq-group--platform .faq-item__icon {
  background: var(--c-ink-soft);
}

.page-faq .faq-item__question {
  flex: 1;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.45;
  color: var(--c-ink);
}

.page-faq .faq-item__answer {
  padding: 18px var(--faq-item-pad) var(--faq-item-pad) var(--faq-answer-indent);
}

.page-faq .faq-item__answer p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-muted);
  margin: 0;
}

/* ===== 联系支持区 ===== */
.page-faq .faq-contact {
  background: var(--c-ink-deep);
  color: var(--c-cream);
  padding: var(--space-section) 0;
  position: relative;
}

.page-faq .faq-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--c-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-line) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: 0.3;
  pointer-events: none;
}

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

.page-faq .faq-contact__grid {
  display: grid;
  gap: 36px;
  align-items: center;
}

.page-faq .faq-contact h2 {
  color: var(--c-cream);
}

.page-faq .faq-contact__desc {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: rgba(245, 243, 239, 0.75);
  max-width: 520px;
  margin-bottom: 26px;
}

.page-faq .faq-contact__channels {
  display: grid;
  gap: 14px;
  margin-bottom: 28px;
}

.page-faq .faq-contact__card {
  background: rgba(255, 255, 255, 0.06);
  border-left: 3px solid var(--c-accent);
  padding: 18px 20px;
  max-width: 520px;
}

.page-faq .faq-contact__card-label {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-teal);
  margin-bottom: 6px;
}

.page-faq .faq-contact__card-value {
  display: block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  color: var(--c-cream);
  word-break: break-all;
}

.page-faq .faq-contact__btn {
  display: inline-block;
  background: var(--c-accent);
  color: var(--c-ink);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.02em;
  padding: 14px 30px;
  border: 2px solid var(--c-accent);
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-contact__btn:hover {
  background: transparent;
  color: var(--c-accent);
}

.page-faq .faq-contact__media {
  position: relative;
}

.page-faq .faq-contact__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--c-line);
  background: var(--c-ink);
}

.page-faq .faq-contact__trust {
  margin-top: 48px;
  padding: 18px 20px;
  border: 1px solid var(--c-line);
  background: rgba(255, 255, 255, 0.03);
}

.page-faq .faq-contact__trust p {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: rgba(245, 243, 239, 0.7);
  margin: 0;
}

/* ===== 使用指南区 ===== */
.page-faq .faq-guide {
  background: var(--c-cream);
  padding: var(--space-section) 0;
}

.page-faq .faq-guide__head {
  margin-bottom: 36px;
}

.page-faq .faq-guide__head > p {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--c-muted);
  margin: 0;
}

.page-faq .faq-guide__grid {
  display: grid;
  gap: 16px;
}

.page-faq .faq-guide__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--c-paper);
  border: 1px solid var(--c-border);
  padding: 26px 24px;
  color: var(--c-text);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-guide__card:hover {
  border-color: var(--c-accent);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.page-faq .faq-guide__card-icon {
  width: var(--faq-icon-size);
  height: var(--faq-icon-size);
  padding: 11px;
  background: var(--c-ink);
  color: var(--c-cream);
  margin-bottom: 8px;
}

.page-faq .faq-guide__card h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 19px;
  color: var(--c-ink);
  margin: 0;
}

.page-faq .faq-guide__card p {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
  margin: 0;
  flex: 1;
}

.page-faq .faq-guide__card-link {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 13px;
  color: var(--c-accent);
  margin-top: 8px;
}

/* ===== 响应式增强 ===== */
@media (min-width: 768px) {
  .page-faq .faq-categories__grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
  }

  .page-faq .faq-categories__media::before {
    content: "";
    position: absolute;
    inset: 16px -16px -16px 16px;
    border: 2px solid var(--c-teal);
    z-index: 0;
  }

  .page-faq .faq-categories__media img {
    position: relative;
    z-index: 1;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .faq-contact__media::before {
    content: "";
    position: absolute;
    inset: 16px -16px -16px 16px;
    border: 2px solid var(--c-accent);
    z-index: 0;
  }

  .page-faq .faq-contact__media img {
    position: relative;
    z-index: 1;
  }

  .page-faq .faq-guide__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding-top: calc(var(--header-h) + 48px);
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
    gap: 56px;
  }

  .page-faq .faq-hero__lead {
    font-size: 17px;
  }

  .page-faq .faq-hero__stats .folio-stat {
    flex: 1 1 160px;
    padding: 20px 18px;
  }

  .page-faq .faq-group {
    scroll-margin-top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-item__summary {
    padding: 20px 24px;
  }

  .page-faq .faq-item__answer {
    padding-left: 84px;
  }

  .page-faq .faq-contact__card {
    padding: 20px 24px;
  }

  .page-faq .faq-contact__card-value {
    font-size: 20px;
  }
}