.page-faq {
  --faq-page-gap: clamp(24px, 4vw, 56px);
  --faq-card-shadow: 0 1px 0 rgba(18, 43, 64, 0.04), 0 10px 30px rgba(18, 43, 64, 0.06);
  --faq-category-red: #C63627;
  --faq-category-gold: #D9A441;
  --faq-category-green: #2E8B6E;
  --faq-category-blue: #4A7AB0;
  --faq-category-yellow: #E8C55F;
  background: linear-gradient(180deg, #F9F9F4 0%, #EFF5F8 34%, #F9F9F4 100%);
  padding-bottom: 96px;
}

.page-faq .container {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: clamp(16px, 3vw, 40px);
}

.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-block: 28px 12px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-blue);
}

.page-faq .breadcrumb a {
  color: var(--color-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast);
}

.page-faq .breadcrumb a:hover {
  border-color: currentColor;
}

.page-faq .breadcrumb span {
  color: var(--color-navy);
}

.page-faq .faq-hero {
  padding-block: 40px 60px;
}

.page-faq .faq-hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-page-gap);
  align-items: center;
}

.page-faq .faq-hero-copy {
  max-width: 720px;
}

.page-faq .faq-hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-red);
  margin-bottom: 18px;
}

.page-faq .faq-hero-kicker::before {
  content: "";
  width: 32px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-red) 0%, var(--color-gold) 100%);
  border-radius: 2px;
}

.page-faq .faq-hero-title {
  font-family: var(--font-heading);
  font-size: clamp(32px, 5vw, 60px);
  font-weight: 900;
  line-height: 1.15;
  color: var(--color-navy);
  margin: 0 0 20px;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero-desc {
  font-family: var(--font-body);
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.8;
  color: var(--color-navy);
  opacity: 0.78;
  margin: 0 0 28px;
  max-width: 640px;
}

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

.page-faq .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid transparent;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-base);
}

.page-faq .btn-primary {
  background: var(--color-red);
  color: var(--color-snow);
  border-color: var(--color-red);
}

.page-faq .btn-primary:hover {
  background: #a82d20;
  border-color: #a82d20;
}

.page-faq .btn-secondary {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.page-faq .btn-secondary:hover {
  background: var(--color-navy);
  color: var(--color-snow);
}

.page-faq .btn-gold {
  background: var(--color-gold);
  color: var(--color-navy);
  border-color: var(--color-gold);
}

.page-faq .btn-gold:hover {
  background: #c4953a;
  border-color: #c4953a;
}

.page-faq .faq-hero-visual {
  position: relative;
}

.page-faq .image-frame {
  display: block;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-pale);
}

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

.page-faq .faq-hero-img {
  width: 100%;
  aspect-ratio: 2.4 / 1;
  border: 1px solid var(--color-gray);
  box-shadow: var(--faq-card-shadow);
}

.page-faq .faq-hero-img::after {
  content: "FAQ";
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--color-navy);
  color: var(--color-snow);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 6px 12px;
  border-radius: 3px;
  opacity: 0.85;
}

.page-faq .faq-hero-img {
  position: relative;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.page-faq .faq-index {
  width: 100%;
}

.page-faq .faq-index-card {
  background: var(--color-snow);
  border: 1px solid var(--color-gray);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--faq-card-shadow);
  position: relative;
}

.page-faq .faq-index-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--color-red) 0%, var(--color-gold) 25%, var(--color-yellow) 50%, var(--color-green) 75%, var(--color-blue) 100%);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.page-faq .faq-index-label {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin: 0 0 6px;
}

.page-faq .faq-index-title {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 900;
  color: var(--color-navy);
  margin: 0 0 20px;
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  border-top: 1px solid var(--color-gray);
}

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

.page-faq .faq-index-list a {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  padding: 14px 4px;
  border-bottom: 1px solid var(--color-gray);
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-navy);
  transition: padding-left var(--transition-fast), background-color var(--transition-fast);
}

.page-faq .faq-index-list a:hover {
  padding-left: 12px;
  background: var(--color-pale);
}

.page-faq .faq-index-list a:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}

.page-faq .faq-index-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 28px;
  background: var(--color-pale);
  color: var(--color-red);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 900;
  border-radius: 4px;
  padding-inline: 6px;
}

.page-faq .faq-index-contact {
  background: var(--color-navy);
  border-radius: var(--radius-sm);
  padding: 20px 18px;
  color: var(--color-snow);
}

.page-faq .faq-index-contact-label {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-gold);
  margin: 0 0 10px;
}

.page-faq .faq-index-contact a {
  display: block;
  color: var(--color-snow);
  font-family: var(--font-body);
  font-size: 15px;
  text-decoration: none;
  padding-block: 4px;
  transition: color var(--transition-fast);
}

.page-faq .faq-index-contact a:hover {
  color: var(--color-yellow);
}

.page-faq .faq-content {
  width: 100%;
  min-width: 0;
}

.page-faq .faq-section {
  margin-bottom: 72px;
  scroll-margin-top: 110px;
}

.page-faq .section-heading {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding-bottom: 14px;
  border-bottom: 4px solid var(--color-navy);
  margin-bottom: 14px;
}

.page-faq .section-num {
  font-family: var(--font-heading);
  font-size: 44px;
  font-weight: 900;
  line-height: 1;
  color: var(--color-red);
  letter-spacing: -0.02em;
}

.page-faq .section-title {
  font-family: var(--font-heading);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 900;
  line-height: 1.2;
  color: var(--color-navy);
  margin: 0;
}

.page-faq .faq-section-intro {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-ink);
  opacity: 0.7;
  margin: 0 0 36px;
}

.page-faq .faq-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-item {
  background: var(--color-snow);
  border: 1px solid var(--color-gray);
  border-radius: var(--radius-md);
  box-shadow: var(--faq-card-shadow);
  overflow: hidden;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.page-faq .faq-item:hover {
  border-color: #d0c9bb;
  box-shadow: 0 1px 0 rgba(18, 43, 64, 0.03), 0 14px 34px rgba(18, 43, 64, 0.09);
}

.page-faq .faq-item-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 17px;
  line-height: 1.5;
}

.page-faq .faq-item-toggle {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 22px 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-navy);
  transition: background-color var(--transition-fast);
}

@media (min-width: 720px) {
  .page-faq .faq-item-toggle {
    padding: 24px 28px;
    font-size: 17px;
  }
}

.page-faq .faq-item-toggle:hover {
  background: var(--color-pale);
}

.page-faq .faq-item-toggle:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: -2px;
}

.page-faq .faq-item-arrow {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-pale);
  position: relative;
  transition: background-color var(--transition-fast), transform var(--transition-base);
}

.page-faq .faq-item-arrow::before,
.page-faq .faq-item-arrow::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 2px;
  background: var(--color-red);
  border-radius: 1px;
  transform: translate(-50%, -50%);
  transition: opacity var(--transition-fast);
}

.page-faq .faq-item-arrow::after {
  height: 10px;
  width: 2px;
}

.page-faq .faq-item-toggle[aria-expanded="true"] .faq-item-arrow {
  transform: rotate(45deg);
  background: rgba(198, 54, 39, 0.12);
}

.page-faq .faq-item-toggle[aria-expanded="false"] .faq-item-arrow::after {
  opacity: 1;
}

.page-faq .faq-item-toggle[aria-expanded="true"] .faq-item-arrow::after {
  opacity: 0;
}

.page-faq .faq-item-answer {
  display: none;
  padding: 0 20px 22px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-ink);
  border-top: 1px dashed var(--color-gray);
  padding-top: 16px;
}

.page-faq .faq-item-answer-open,
.page-faq .faq-item[data-open] .faq-item-answer {
  display: block;
}

@media (min-width: 720px) {
  .page-faq .faq-item-answer {
    padding: 0 72px 26px 62px;
    padding-top: 16px;
  }
}

.page-faq .faq-item-answer p {
  margin: 0 0 12px;
}

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

.page-faq .faq-item-answer a {
  color: var(--color-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(74, 122, 176, 0.4);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.page-faq .faq-item-answer a:hover {
  color: var(--color-red);
  border-color: var(--color-red);
}

.page-faq .faq-android-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 36px;
  padding: 18px 0 0;
}

.page-faq .faq-android-visual {
  order: 2;
}

.page-faq .faq-android-img {
  width: 100%;
  max-width: 480px;
  margin-inline: auto;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--color-gray);
  box-shadow: var(--faq-card-shadow);
  position: relative;
}

.page-faq .faq-android-img::before {
  content: "安卓端工具 v4.2.1";
  position: absolute;
  left: 14px;
  bottom: 14px;
  background: var(--color-navy);
  color: var(--color-snow);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 6px 12px;
  border-radius: 3px;
  z-index: 2;
}

.page-faq .faq-bottom-note {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
  background: linear-gradient(125deg, var(--color-navy) 0%, #1d3e58 58%, var(--color-navy-deep) 100%);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  position: relative;
  overflow: hidden;
}

.page-faq .faq-bottom-note::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: radial-gradient(ellipse at 88% 12%, rgba(217, 164, 65, 0.18) 0%, transparent 48%);
  pointer-events: none;
}

.page-faq .faq-bottom-note-text {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 700;
  line-height: 1.6;
  color: var(--color-snow);
  max-width: 600px;
}

.page-faq .faq-bottom-note .btn-gold {
  z-index: 1;
}

@media (min-width: 768px) {
  .page-faq {
    padding-bottom: 120px;
  }

  .page-faq .faq-hero {
    padding-block: 56px 80px;
  }

  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
  }

  .page-faq .faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-height) + 24px);
    z-index: 4;
  }

  .page-faq .faq-android-block {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-android-visual {
    order: 1;
  }

  .page-faq .faq-android-copy {
    order: 2;
  }

  .page-faq .faq-android-img {
    margin-inline: 0;
  }

  .page-faq .faq-bottom-note {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 40px 44px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-layout {
    grid-template-columns: 290px minmax(0, 1fr);
    gap: 64px;
  }

  .page-faq .faq-index-card {
    padding: 30px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item-toggle,
  .page-faq .faq-item-answer,
  .page-faq .faq-item-arrow {
    transition: none;
  }

  .page-faq .faq-index-list a {
    transition: none;
  }
}