.page-faq {
  --faq-serif: "Noto Serif SC", "Source Han Serif", "Songti SC", serif;
  --faq-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--white);
  color: var(--grey);
  font-family: var(--faq-sans);
  line-height: 1.75;
  overflow-x: hidden;
}

/* Hero */
.page-faq .faq-hero {
  position: relative;
  padding: 40px 0 48px;
  border-bottom: 1px solid var(--light);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -90px;
  top: -60px;
  width: 420px;
  height: 320px;
  background: radial-gradient(circle at center, rgba(160, 48, 40, 0.1), rgba(160, 48, 40, 0.02) 68%);
  border-radius: 50%;
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--red) 0%, var(--red) 38%, var(--gold) 38%, var(--gold) 54%, var(--blue) 54%, var(--blue) 100%);
  opacity: 0.85;
}
.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column-reverse;
  gap: 32px;
}
.page-faq .breadcrumb {
  font-size: 13px;
  color: rgba(44, 44, 44, 0.65);
  margin-bottom: 12px;
}
.page-faq .breadcrumb a {
  color: var(--blue);
  text-decoration: none;
  font-weight: 600;
}
.page-faq .breadcrumb a:hover {
  color: var(--red);
  text-decoration: underline;
}
.page-faq .faq-hero h1 {
  margin: 12px 0 14px;
  font-family: var(--faq-serif);
  font-size: 30px;
  line-height: 1.35;
  font-weight: 800;
  color: var(--grey);
  letter-spacing: 0.02em;
}
.page-faq .faq-hero-desc {
  margin: 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(44, 44, 44, 0.74);
}
.page-faq .faq-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.page-faq .faq-hero-tags a {
  font-size: 13px;
  font-weight: 600;
  color: var(--blue);
  background: var(--light-blue);
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 5px 14px;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.page-faq .faq-hero-tags a:hover,
.page-faq .faq-hero-tags a:focus-visible {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
  outline: none;
}
.page-faq .faq-hero-visual {
  max-width: 100%;
}
.page-faq .faq-hero-img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--light);
  background: var(--light);
}

/* Layout */
.page-faq .faq-layout {
  padding: 40px 0 16px;
}
.page-faq .faq-main {
  min-width: 0;
}

/* Index */
.page-faq .faq-index {
  background: var(--light);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 32px;
}
.page-faq .faq-index-label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--faq-serif);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--red);
  text-transform: uppercase;
}
.page-faq .faq-index-label::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--gold);
}
.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}
.page-faq .faq-index-list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--grey);
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}
.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  background: rgba(160, 48, 40, 0.08);
  color: var(--red);
  outline: none;
}
.page-faq .faq-index-list .num {
  font-family: var(--faq-serif);
  font-size: 12px;
  font-weight: 700;
  color: var(--gold);
  min-width: 22px;
}
.page-faq .faq-index-note {
  margin-top: 22px;
  padding: 18px 16px;
  background: var(--white);
  border-radius: 10px;
  border-left: 3px solid var(--gold);
}
.page-faq .faq-index-note-label {
  display: block;
  font-family: var(--faq-serif);
  font-size: 16px;
  font-weight: 800;
  color: var(--dark-red);
  margin-bottom: 6px;
}
.page-faq .faq-index-note p {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(44, 44, 44, 0.75);
}

/* FAQ sections */
.page-faq .faq-section {
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.page-faq .faq-section-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 36px 0 18px;
  padding-top: 28px;
  border-top: 1px solid var(--light);
}
.page-faq .faq-section:first-of-type .faq-section-head {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}
.page-faq .faq-section-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  height: 30px;
  padding: 0 8px;
  background: var(--red);
  color: var(--white);
  font-family: var(--faq-serif);
  font-size: 14px;
  font-weight: 700;
  border-radius: 4px;
  letter-spacing: 0.05em;
}
.page-faq .faq-section-head h2 {
  margin: 0;
  font-family: var(--faq-serif);
  font-size: 24px;
  font-weight: 800;
  color: var(--grey);
  letter-spacing: 0.02em;
}

/* FAQ accordion items */
.page-faq .faq-item {
  background: var(--white);
  border: 1px solid var(--light);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.page-faq .faq-item[open] {
  border-color: rgba(160, 48, 40, 0.12);
  box-shadow: var(--shadow);
}
.page-faq .faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  font-family: var(--faq-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--grey);
  transition: color var(--transition);
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--red);
  outline: none;
}
.page-faq .faq-q-mark {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--red);
  color: var(--white);
  font-family: var(--faq-serif);
  font-size: 15px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition);
}
.page-faq .faq-item[open] .faq-q-mark {
  background: var(--dark-red);
  transform: rotate(-12deg);
}
.page-faq .faq-toggle-mark {
  margin-left: auto;
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--blue);
  border-bottom: 2px solid var(--blue);
  transform: rotate(45deg);
  transition: transform var(--transition);
}
.page-faq .faq-item[open] .faq-toggle-mark {
  transform: rotate(225deg);
}
.page-faq .faq-answer {
  background: var(--light);
  border-radius: 10px;
  border-left: 3px solid var(--gold);
  margin: 0 16px 18px 58px;
  padding: 16px 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--grey);
}
.page-faq .faq-answer p {
  margin: 0;
}
.page-faq .faq-answer strong {
  color: var(--blue);
  font-weight: 700;
}

/* Sync section */
.page-faq .faq-sync-block {
  padding: 48px 0 24px;
}
.page-faq .faq-sync-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
}
.page-faq .faq-sync-visual {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--light);
  background: var(--light);
}
.page-faq .faq-sync-visual img {
  display: block;
  width: 100%;
  height: auto;
}
.page-faq .faq-sync-kicker {
  display: inline-block;
  font-family: var(--faq-serif);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--gold);
  background: var(--dark-red);
  border-radius: 4px;
  padding: 4px 10px;
  margin-bottom: 14px;
}
.page-faq .faq-sync-copy h2 {
  margin: 0 0 12px;
  font-family: var(--faq-serif);
  font-size: 24px;
  line-height: 1.4;
  font-weight: 800;
  color: var(--grey);
}
.page-faq .faq-sync-copy p {
  margin: 0 0 20px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(44, 44, 44, 0.78);
}

/* Quick nav tabs */
.page-faq .quick-nav {
  padding: 48px 0 72px;
}
.page-faq .quick-nav-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  margin-bottom: 28px;
}
.page-faq .quick-nav-head h2 {
  margin: 0;
  font-family: var(--faq-serif);
  font-size: 24px;
  font-weight: 800;
  color: var(--grey);
}
.page-faq .quick-nav-head p {
  margin: 0;
  max-width: 640px;
  font-size: 15px;
  color: rgba(44, 44, 44, 0.7);
}
.page-faq .tabs-nav {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--light);
  overflow-x: auto;
  scrollbar-width: thin;
}
.page-faq .tab-button {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 12px 18px;
  font-family: var(--faq-sans);
  font-size: 15px;
  font-weight: 600;
  color: var(--grey);
  border-bottom: 3px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--transition), border-color var(--transition);
  margin-bottom: -2px;
}
.page-faq .tab-button:hover,
.page-faq .tab-button:focus-visible {
  color: var(--red);
  border-bottom-color: rgba(160, 48, 40, 0.45);
  outline: none;
}
.page-faq .tab-panel {
  background: var(--light);
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 22px 20px;
}
.page-faq .faq-tab-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-faq .faq-tab-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--grey);
}
.page-faq .faq-tab-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 7px;
  height: 7px;
  background: var(--gold);
  border-radius: 50%;
}
.page-faq .faq-tab-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-faq .faq-tab-steps li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--grey);
}
.page-faq .step-num {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--red);
  color: var(--white);
  font-family: var(--faq-serif);
  font-size: 13px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Desktop enhancements */
@media (min-width: 640px) {
  .page-faq .faq-hero h1 {
    font-size: 36px;
  }
  .page-faq .faq-item summary {
    padding: 18px 22px;
  }
  .page-faq .faq-answer {
    margin-left: 72px;
    margin-right: 22px;
  }
  .page-faq .quick-nav {
    padding: 64px 0 88px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: 56px 0 64px;
  }
  .page-faq .faq-hero-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 56px;
  }
  .page-faq .faq-hero-copy {
    flex: 1;
    max-width: 640px;
  }
  .page-faq .faq-hero-visual {
    flex: 0 1 400px;
  }
  .page-faq .faq-hero-desc {
    font-size: 17px;
  }
  .page-faq .quick-nav-head h2 {
    font-size: 28px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
    padding: 56px 0 24px;
  }
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    margin-bottom: 0;
  }
  .page-faq .faq-index-list {
    display: block;
  }
  .page-faq .faq-index-list a {
    padding: 8px 10px;
  }
  .page-faq .faq-sync-inner {
    grid-template-columns: 420px 1fr;
    gap: 52px;
  }
  .page-faq .faq-sync-block {
    padding: 72px 0 48px;
  }
  .page-faq .faq-sync-copy h2 {
    font-size: 28px;
  }
}