.page-faq {
  --faq-index-w: 17rem;
  --faq-serif: Georgia, 'Times New Roman', serif;
  --faq-gap: clamp(2rem, 4vw, 3.25rem);
  background-color: var(--dawn-white);
}

/* ===== 面包屑 ===== */
.page-faq .breadcrumb {
  margin-bottom: 2rem;
}
.page-faq .breadcrumb__link {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  transition: color 0.28s ease;
}
.page-faq .breadcrumb__link:hover {
  color: var(--gold);
}
.page-faq .breadcrumb__separator {
  color: rgba(255, 255, 255, 0.4);
}

/* ===== Hero 引导区 ===== */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + clamp(2rem, 4vw, 3.5rem)) 0 clamp(2.5rem, 5vw, 4rem);
  background: linear-gradient(120deg, var(--deep-blue), var(--dark-ink));
  color: var(--pure-white);
  overflow: hidden;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -6%;
  top: -30%;
  width: 50%;
  height: 160%;
  background: radial-gradient(ellipse at center, rgba(245, 192, 75, 0.15) 0%, transparent 60%);
  pointer-events: none;
}
.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}
.page-faq .faq-hero__content {
  position: relative;
}
.page-faq .faq-hero__vertical {
  display: none;
}
.page-faq .faq-hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 1rem;
}
.page-faq .faq-hero__lead {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.85);
  max-width: 44rem;
  margin-bottom: 1.25rem;
}
.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.page-faq .faq-hero__tags .tag--outline {
  border-color: rgba(255, 255, 255, 0.55);
  color: var(--pure-white);
  background: rgba(255, 255, 255, 0.07);
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}
.page-faq .faq-hero__visual img {
  width: 100%;
  height: auto;
  border-radius: 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow:
    0 0 0 6px rgba(255, 255, 255, 0.04),
    0 18px 45px rgba(0, 0, 0, 0.35);
}

/* ===== FAQ 双栏主体 ===== */
.page-faq .faq-body {
  padding-top: clamp(2.5rem, 5vw, 4.5rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

/* 索引区 */
.page-faq .faq-index {
  margin-bottom: 2.5rem;
}
.page-faq .faq-index__card {
  position: relative;
  padding: 2rem 1.5rem 1.5rem;
  background: var(--pure-white);
}
.page-faq .faq-index__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: repeating-linear-gradient(90deg, var(--vital-orange) 0 14px, var(--gold) 14px 28px, var(--pure-white) 28px 36px);
}
.page-faq .faq-index__card h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--deep-blue);
  margin: 0 0 0.35rem;
  letter-spacing: -0.01em;
}
.page-faq .faq-index__sub {
  font-size: 0.85rem;
  color: var(--mist-gray);
  margin: 0 0 1rem;
}
.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-faq .faq-index__list li + li {
  border-top: 1px solid var(--mist-gray);
}
.page-faq .faq-index__list a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 0.4rem;
  color: var(--text-ink);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color 0.28s ease, background-color 0.28s ease, padding-left 0.28s ease;
}
.page-faq .faq-index__list a:hover {
  color: var(--vital-orange);
  background: rgba(217, 237, 255, 0.4);
  padding-left: 0.7rem;
}
.page-faq .faq-index__num {
  font-family: var(--faq-serif);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--deep-blue);
  min-width: 1.7rem;
}
.page-faq .faq-index__foot {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--mist-gray);
}
.page-faq .faq-index__foot p {
  margin: 0 0 0.85rem;
  font-size: 0.9rem;
  color: var(--text-ink);
}

/* 答案区 */
.page-faq .faq-answers {
  min-width: 0;
}
.page-faq .faq-group {
  position: relative;
  background: var(--pure-white);
  border: 1px solid var(--mist-gray);
  border-left: 4px solid var(--deep-blue);
  box-shadow: var(--shadow-soft);
  margin-bottom: clamp(2rem, 4vw, 2.75rem);
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}
.page-faq .faq-group:target {
  animation: faq-flash 1.4s ease-out;
}
.page-faq .faq-group:nth-child(even) {
  border-left-color: var(--vital-orange);
}
.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--mist-gray);
  background: linear-gradient(90deg, var(--dawn-white) 0%, transparent 70%);
}
.page-faq .faq-group__num {
  font-family: var(--faq-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--vital-orange);
  line-height: 1;
}
.page-faq .faq-group__head h2 {
  font-size: clamp(1.3rem, 3vw, 1.55rem);
  font-weight: 700;
  margin: 0;
  color: var(--deep-blue);
  letter-spacing: -0.01em;
}
.page-faq .faq-group__body .faq-item:first-child {
  border-top: none;
}

/* FAQ 条目 */
.page-faq .faq-item {
  border-top: 1px solid var(--mist-gray);
}
.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.05rem 1.5rem;
  cursor: pointer;
  list-style: none;
  transition: background-color 0.28s ease;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary:hover {
  background-color: var(--shadow-blue);
}
.page-faq .faq-item__q {
  flex: 1;
  font-weight: 500;
  color: var(--text-ink);
  line-height: 1.5;
}
.page-faq .faq-item__icon {
  flex-shrink: 0;
  position: relative;
  width: 1.5rem;
  height: 1.5rem;
  border: 1px solid var(--deep-blue);
  border-radius: 50%;
  transition: transform 0.28s ease, background-color 0.28s ease, border-color 0.28s ease;
}
.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--deep-blue);
  transition: background-color 0.28s ease;
}
.page-faq .faq-item__icon::before {
  width: 9px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}
.page-faq .faq-item__icon::after {
  width: 1.5px;
  height: 9px;
  transform: translate(-50%, -50%);
}
.page-faq .faq-item[open] > summary .faq-item__icon {
  transform: rotate(45deg);
  background-color: var(--vital-orange);
  border-color: var(--vital-orange);
}
.page-faq .faq-item[open] > summary .faq-item__icon::before,
.page-faq .faq-item[open] > summary .faq-item__icon::after {
  background: var(--pure-white);
}
.page-faq .faq-item__a {
  padding: 0 1.5rem 1.2rem 4rem;
  color: var(--text-ink);
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.75;
}
.page-faq .faq-item[open] .faq-item__a {
  animation: faq-fade-in 0.35s ease;
}
.page-faq .faq-item__a p {
  margin: 0 0 0.5rem;
}
.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-item__a a {
  color: var(--deep-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.28s ease;
}
.page-faq .faq-item__a a:hover {
  color: var(--vital-orange);
}

@keyframes faq-flash {
  0% {
    box-shadow: 0 0 0 0 rgba(242, 140, 40, 0.45);
  }
  100% {
    box-shadow: 0 0 0 18px rgba(242, 140, 40, 0);
  }
}
@keyframes faq-fade-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== 底部联系品牌 ===== */
.page-faq .faq-contact {
  padding: clamp(3rem, 6vw, 5rem) 0;
  background:
    radial-gradient(ellipse at 10% 85%, rgba(245, 192, 75, 0.12) 0%, transparent 50%),
    var(--dark-ink);
  color: var(--pure-white);
}
.page-faq .faq-contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
.page-faq .faq-contact__visual img {
  width: 100%;
  max-width: 320px;
  height: auto;
  border-radius: 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}
.page-faq .faq-contact__content h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.75rem;
  color: var(--pure-white);
}
.page-faq .faq-contact__lead {
  color: rgba(255, 255, 255, 0.78);
  font-weight: 300;
  line-height: 1.7;
  max-width: 34rem;
  margin-bottom: 1.5rem;
}
.page-faq .faq-contact__list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
}
.page-faq .faq-contact__list li {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.page-faq .faq-contact__list a {
  color: var(--pure-white);
  text-decoration: none;
  font-size: 1rem;
  transition: color 0.28s ease;
}
.page-faq .faq-contact__list a:hover {
  color: var(--vital-orange);
}
.page-faq .faq-contact__note {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  margin: 0 0 1.5rem;
}

/* ===== 平板及以上 ===== */
@media (min-width: 768px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--faq-gap);
  }
  .page-faq .faq-hero__content {
    padding-left: 2rem;
  }
  .page-faq .faq-hero__vertical {
    display: block;
    position: absolute;
    left: 0;
    top: 0.15rem;
    color: rgba(255, 255, 255, 0.42);
    font-size: 0.68rem;
    letter-spacing: 0.22em;
  }
  .page-faq .faq-contact__grid {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 3.5rem;
  }
}

/* ===== 桌面端 ===== */
@media (min-width: 1024px) {
  .page-faq .faq-body {
    display: grid;
    grid-template-columns: var(--faq-index-w) 1fr;
    gap: clamp(2.5rem, 5vw, 4rem);
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 2rem);
    margin-bottom: 0;
  }
}