.page-faq {
  --faq-hero-grid-opacity: 0.06;
  background: linear-gradient(180deg, var(--color-deep-blue) 0%, var(--color-carbon) 46%);
  color: var(--color-white);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

/* ===== 页头 ===== */
.page-faq .faq-hero {
  position: relative;
  padding: 40px 0 48px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(123, 44, 191, 0.28) 0%, transparent 42%),
    linear-gradient(180deg, var(--color-deep-blue) 0%, var(--color-carbon) 100%);
  border-bottom: 4px solid var(--color-orange);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 100%;
  background-image:
    linear-gradient(rgba(255, 255, 255, var(--faq-hero-grid-opacity)) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, var(--faq-hero-grid-opacity)) 1px, transparent 1px);
  background-size: 22px 22px;
  clip-path: polygon(14% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
  opacity: 0.7;
}
.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
}
.page-faq .breadcrumb {
  margin: 0 0 20px;
}
.page-faq .breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
  margin: 0;
  padding: 0;
  font-size: 0.82rem;
  color: var(--color-light-gray);
}
.page-faq .breadcrumb a {
  color: var(--color-light-gray);
  text-decoration: none;
  transition: color 0.2s ease;
}
.page-faq .breadcrumb a:hover {
  color: var(--color-orange);
}
.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(255, 255, 255, 0.35);
}
.page-faq .breadcrumb li[aria-current="page"] {
  color: var(--color-orange);
}
.page-faq .faq-hero .section-label {
  margin-bottom: 14px;
}
.page-faq .faq-hero h1 {
  font-family: var(--font-headline);
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: 0 0 16px;
}
.page-faq .faq-hero__lead {
  color: var(--color-light-gray);
  font-size: 1.05rem;
  max-width: 34em;
  margin: 0 0 24px;
}
.page-faq .faq-hero__visual {
  background: var(--color-carbon-light);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-left: 8px solid var(--color-orange);
  box-shadow: var(--shadow-pop);
  padding: 10px;
}
.page-faq .faq-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 搜索框 ===== */
.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-white);
  border-radius: var(--radius-pill);
  padding: 6px 8px 6px 18px;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.35);
  max-width: 620px;
}
.page-faq .faq-search svg {
  flex-shrink: 0;
  color: var(--color-carbon);
}
.page-faq .faq-search input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  color: var(--color-carbon);
  font-size: 1rem;
  padding: 10px 0;
  outline: none;
}
.page-faq .faq-search input::placeholder {
  color: #8a8f98;
}
.page-faq .faq-search:focus-within {
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.5), 0 14px 36px rgba(0, 0, 0, 0.35);
}
.page-faq .faq-search__hot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  margin-top: 14px;
  font-size: 0.86rem;
}
.page-faq .faq-search__hot span {
  color: var(--color-light-gray);
}
.page-faq .faq-search__hot a {
  color: var(--color-orange);
  text-decoration: none;
  border-bottom: 1px dashed rgba(255, 107, 53, 0.55);
  padding-bottom: 1px;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.page-faq .faq-search__hot a:hover {
  color: var(--color-white);
  border-bottom-color: var(--color-white);
}

/* ===== 主体布局 ===== */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding: 40px 0;
}

/* ===== 侧边栏 ===== */
.page-faq .faq-sidebar__inner {
  background: rgba(46, 46, 46, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-card);
}
.page-faq .faq-sidebar .section-label {
  margin-bottom: 12px;
}
.page-faq .faq-sidebar h2 {
  font-family: var(--font-headline);
  font-size: 1.35rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 16px;
}
.page-faq .faq-sidebar ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.page-faq .faq-sidebar li {
  flex-shrink: 0;
}
.page-faq .faq-sidebar__link {
  display: block;
  padding: 8px 18px;
  background: var(--color-carbon);
  color: var(--color-light-gray);
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.page-faq .faq-sidebar__link:hover,
.page-faq .faq-sidebar__link:focus {
  color: var(--color-white);
  border-color: var(--color-orange);
  background: rgba(255, 107, 53, 0.12);
}
.page-faq .faq-sidebar__note {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--color-light-gray);
  font-size: 0.84rem;
}
.page-faq .faq-sidebar__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-green);
  box-shadow: 0 0 10px var(--color-green);
  flex-shrink: 0;
  animation: page-faq-pulse 2s ease-in-out infinite;
}
@keyframes page-faq-pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.55;
    transform: scale(1.25);
  }
}

/* ===== 主内容 ===== */
.page-faq .faq-main {
  min-width: 0;
}

/* ===== FAQ区块 ===== */
.page-faq .faq-section {
  margin-bottom: 52px;
  scroll-margin-top: 140px;
}
.page-faq .faq-section__head {
  position: relative;
  padding-left: 52px;
  margin-bottom: 20px;
}
.page-faq .faq-section__num {
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-headline);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
  color: rgba(255, 107, 53, 0.35);
}
.page-faq .faq-section__head h2 {
  font-family: var(--font-headline);
  font-size: 1.55rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 4px;
}
.page-faq .faq-section__head p {
  margin: 0;
  color: var(--color-light-gray);
  font-size: 0.92rem;
}

/* ===== 手风琴 ===== */
.page-faq .faq-accordion {
  border-top: 2px solid rgba(255, 255, 255, 0.08);
}
.page-faq .faq-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: transparent;
  transition: background 0.25s ease;
}
.page-faq .faq-item[open] {
  background: rgba(255, 255, 255, 0.035);
}
.page-faq .faq-item summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 18px 52px 18px 14px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  line-height: 1.5;
  transition: color 0.2s ease;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary:hover {
  color: var(--color-orange);
}
.page-faq .faq-item summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 3px;
  height: 0;
  background: var(--color-green);
  transition: height 0.3s ease;
}
.page-faq .faq-item[open] summary::before {
  height: 24px;
}
.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-carbon-light);
  color: var(--color-orange);
  font-size: 1.2rem;
  font-weight: 700;
  transition: background 0.3s ease, color 0.3s ease, transform 0.3s ease;
}
.page-faq .faq-item[open] summary::after {
  content: "−";
  background: var(--color-orange);
  color: var(--color-white);
  transform: translateY(-50%) rotate(180deg);
}
.page-faq .faq-item__content {
  padding: 0 20px 22px 14px;
  color: var(--color-light-gray);
  font-size: 0.95rem;
  line-height: 1.75;
}
.page-faq .faq-item__content p {
  margin: 0 0 12px;
}
.page-faq .faq-item__content p:last-child {
  margin-bottom: 0;
}

/* ===== 联系支持 ===== */
.page-faq .faq-support {
  padding: 0 0 72px;
  scroll-margin-top: 140px;
}
.page-faq .faq-support__head {
  margin-bottom: 24px;
}
.page-faq .faq-support__head .section-label {
  margin-bottom: 14px;
}
.page-faq .faq-support__head h2 {
  font-family: var(--font-headline);
  font-size: 2rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 6px;
}
.page-faq .faq-support__head p {
  margin: 0;
  color: var(--color-light-gray);
  max-width: 40em;
}
.page-faq .faq-support__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  background: linear-gradient(135deg, rgba(11, 29, 58, 0.92) 0%, rgba(26, 26, 26, 0.95) 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: calc(var(--radius) + 2px);
  padding: 26px;
  position: relative;
  overflow: hidden;
}
.page-faq .faq-support__grid::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: var(--color-orange);
}
.page-faq .faq-support__info {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-faq .faq-support__item {
  padding: 16px 18px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.page-faq .faq-support__item span {
  display: block;
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-orange);
  margin-bottom: 8px;
}
.page-faq .faq-support__item a {
  color: var(--color-white);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: color 0.2s ease;
}
.page-faq .faq-support__item a:hover {
  color: var(--color-orange);
}
.page-faq .faq-support__item p {
  margin: 0;
  color: var(--color-white);
  font-size: 0.98rem;
  line-height: 1.6;
}
.page-faq .faq-support__visual {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 4px solid var(--color-orange);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-carbon-light);
}
.page-faq .faq-support__visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-support__extra {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin-top: 20px;
  font-size: 0.9rem;
}
.page-faq .faq-support__extra span {
  color: var(--color-light-gray);
}
.page-faq .faq-support__extra a {
  color: var(--color-orange);
  text-decoration: none;
  border-bottom: 1px dashed rgba(255, 107, 53, 0.55);
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.page-faq .faq-support__extra a:hover {
  color: var(--color-white);
  border-bottom-color: var(--color-white);
}

/* ===== 桌面端 ===== */
@media (min-width: 992px) {
  .page-faq .faq-hero {
    padding: 64px 0 72px;
  }
  .page-faq .faq-hero__inner {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 56px;
  }
  .page-faq .faq-hero h1 {
    font-size: 4.2rem;
  }
  .page-faq .faq-hero__lead {
    font-size: 1.125rem;
  }
  .page-faq .faq-layout {
    grid-template-columns: 260px 1fr;
    gap: 52px;
    padding: 64px 0 80px;
  }
  .page-faq .faq-sidebar__inner {
    position: sticky;
    top: 120px;
    padding: 28px 24px;
  }
  .page-faq .faq-sidebar ul {
    flex-direction: column;
    gap: 8px;
    overflow-x: visible;
  }
  .page-faq .faq-sidebar__link {
    border-radius: 8px;
    padding: 10px 18px;
    white-space: normal;
  }
  .page-faq .faq-sidebar__note {
    margin-top: 24px;
  }
  .page-faq .faq-section {
    margin-bottom: 68px;
  }
  .page-faq .faq-section__head {
    padding-left: 72px;
  }
  .page-faq .faq-section__num {
    font-size: 3rem;
  }
  .page-faq .faq-section__head h2 {
    font-size: 1.8rem;
  }
  .page-faq .faq-item summary {
    font-size: 1.05rem;
    padding: 22px 56px 22px 16px;
  }
  .page-faq .faq-item__content {
    font-size: 0.98rem;
    padding: 0 24px 24px 16px;
  }
  .page-faq .faq-support {
    padding-bottom: 96px;
  }
  .page-faq .faq-support__grid {
    grid-template-columns: 1fr 0.85fr;
    padding: 40px;
    gap: 40px;
    align-items: center;
  }
  .page-faq .faq-support__info {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .page-faq .faq-support__item a {
    font-size: 1.45rem;
  }
}

/* ===== 减少动态 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-faq {
    scroll-behavior: auto;
  }
  .page-faq .faq-sidebar__dot {
    animation: none;
  }
  .page-faq .faq-item summary::before,
  .page-faq .faq-item summary::after {
    transition: none;
  }
}