.page-faq {
  background: var(--c-paper);
  color: var(--c-ink);
  overflow-x: hidden;
}

/* ===== Hero ===== */
.page-faq .faq-hero {
  position: relative;
  background: var(--c-space);
  color: var(--c-white);
  padding: 40px 0 80px;
  overflow: hidden;
  isolation: isolate;
}
.page-faq .faq-hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.page-faq .faq-hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-faq .faq-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(11,27,61,0.94) 0%, rgba(11,27,61,0.72) 55%, rgba(20,66,76,0.5) 100%);
}
.page-faq .faq-speed-lines {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: repeating-linear-gradient(-55deg, rgba(0,255,135,0.06) 0 1px, transparent 1px 14px);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -6%;
  right: -6%;
  bottom: -1px;
  height: 42px;
  background: var(--c-paper);
  clip-path: polygon(0 55%, 100% 0, 100% 100%, 0 100%);
  z-index: 0;
}
.page-faq .faq-hero-inner {
  position: relative;
  z-index: 2;
  padding-bottom: 16px;
}
.page-faq .faq-hero .kicker {
  color: var(--c-lime);
}
.page-faq .faq-hero .breadcrumb-list {
  color: var(--c-silver);
}
.page-faq .faq-hero .breadcrumb-item a {
  color: rgba(255,255,255,0.68);
  text-decoration: none;
  transition: color var(--ease);
}
.page-faq .faq-hero .breadcrumb-item a:hover {
  color: var(--c-lime);
}
.page-faq .faq-hero .breadcrumb-item[aria-current="page"] {
  color: var(--c-lime);
}
.page-faq .faq-hero h1 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(2.75rem, 8vw, 4.75rem);
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 14px 0;
}
.page-faq .faq-hero-lead {
  max-width: 560px;
  margin: 0;
  color: rgba(242,244,248,0.85);
  font-size: 1.0625rem;
  line-height: 1.7;
}
.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 540px;
  margin-top: 26px;
  padding: 14px 18px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(192,192,200,0.35);
  border-radius: var(--radius-pill);
}
.page-faq .faq-search-icon {
  color: var(--c-lime);
  flex: 0 0 auto;
}
.page-faq .faq-search-text {
  flex: 1;
  color: rgba(242,244,248,0.62);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
}
.page-faq .faq-search-key {
  color: var(--c-silver);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(192,192,200,0.22);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  font-size: 0.625rem;
  letter-spacing: 0.04em;
}
.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 30px;
  max-width: 560px;
}
.page-faq .faq-stat {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(192,192,200,0.24);
  border-radius: 14px;
  padding: 12px 14px;
}
.page-faq .faq-stat-num {
  display: block;
  color: var(--c-lime);
  font-family: var(--font-mono);
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.1;
}
.page-faq .faq-stat-unit {
  font-size: 0.875rem;
}
.page-faq .faq-stat-label {
  display: block;
  margin-top: 6px;
  color: rgba(242,244,248,0.62);
  font-size: 0.75rem;
  line-height: 1.4;
}

/* ===== 分类导航 ===== */
.page-faq .faq-cats {
  background: var(--c-paper);
  padding: 56px 0 20px;
}
.page-faq .faq-cat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 640px) {
  .page-faq .faq-cat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .page-faq .faq-cat-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
}
.page-faq .faq-cat-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--c-white);
  border: 1px solid rgba(20,66,76,0.08);
  border-radius: var(--radius-card);
  padding: 20px;
  color: var(--c-ink);
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(11,27,61,0.06);
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
  overflow: hidden;
}
.page-faq .faq-cat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--c-lime);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.page-faq .faq-cat-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0,255,135,0.5);
  box-shadow: var(--shadow-lift);
}
.page-faq .faq-cat-card:hover::before {
  transform: scaleX(1);
}
.page-faq .faq-cat-img-wrap {
  width: 100%;
  aspect-ratio: 2 / 1;
  border-radius: 14px;
  overflow: hidden;
  background: var(--c-paper);
  margin-bottom: 16px;
}
.page-faq .faq-cat-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-faq .faq-cat-index {
  position: absolute;
  top: 16px;
  right: 16px;
  color: var(--c-silver);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
}
.page-faq .faq-cat-title {
  font-size: 1.3125rem;
  font-weight: 800;
  margin: 0 0 8px;
  color: var(--c-space);
  letter-spacing: -0.01em;
}
.page-faq .faq-cat-desc {
  margin: 0 0 18px;
  color: rgba(26,26,26,0.68);
  font-size: 0.875rem;
  line-height: 1.55;
}
.page-faq .faq-cat-count {
  display: inline-flex;
  align-self: flex-start;
  color: var(--c-teal);
  background: rgba(20,66,76,0.1);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  font-size: 0.8125rem;
  transition: background var(--ease), color var(--ease);
}
.page-faq .faq-cat-card:hover .faq-cat-count {
  background: var(--c-space);
  color: var(--c-lime);
}

/* ===== 常见问题主体 ===== */
.page-faq .faq-main {
  background: var(--c-white);
  padding: 44px 0 64px;
}
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}
@media (min-width: 920px) {
  .page-faq .faq-layout {
    grid-template-columns: 264px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }
}
.page-faq .faq-menu {
  background: var(--c-paper);
  border-radius: var(--radius-card);
  padding: 22px 18px;
}
@media (min-width: 920px) {
  .page-faq .faq-menu {
    position: sticky;
    top: calc(var(--header-masthead-h) + var(--nav-row-h) + 12px);
  }
}
.page-faq .faq-menu-label {
  display: block;
  color: var(--c-teal);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
  padding-left: 6px;
}
.page-faq .faq-menu-nav {
  display: grid;
  gap: 2px;
}
.page-faq .faq-menu-nav a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 12px 10px;
  color: var(--c-space);
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: background var(--ease), color var(--ease);
}
.page-faq .faq-menu-nav a:hover {
  background: var(--c-space);
  color: var(--c-lime);
}
.page-faq .faq-menu-count {
  color: var(--c-silver);
  font-size: 0.8125rem;
  transition: color var(--ease);
}
.page-faq .faq-menu-nav a:hover .faq-menu-count {
  color: var(--c-lime);
}
.page-faq .faq-menu-tip {
  margin-top: 16px;
  padding: 16px 12px;
  border-top: 1px solid rgba(20,66,76,0.14);
  color: var(--c-ink);
  font-size: 0.875rem;
  line-height: 1.7;
  display: flex;
  gap: 10px;
}
.page-faq .faq-menu-tip-icon {
  color: var(--c-orange);
  font-family: var(--font-mono);
}
.page-faq .faq-menu-tip a {
  color: var(--c-teal);
  font-weight: 700;
}
.page-faq .faq-groups {
  display: grid;
  gap: 44px;
}
.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-masthead-h) + var(--nav-row-h) + 20px);
}
.page-faq .faq-group-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.page-faq .faq-group-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-lime);
  color: var(--c-space);
  font-family: var(--font-mono);
  font-weight: 700;
  border-radius: 10px;
  padding: 4px 10px;
  font-size: 0.8125rem;
}
.page-faq .faq-group h3 {
  margin: 0;
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--c-space);
}
.page-faq .faq-group-total {
  margin-left: auto;
  color: var(--c-silver);
  font-size: 0.8125rem;
}

/* ===== 折叠面板 ===== */
.page-faq .faq-item {
  background: var(--c-paper);
  border: 1px solid rgba(20,66,76,0.1);
  border-radius: 16px;
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color var(--ease), box-shadow var(--ease);
}
.page-faq .faq-item[open] {
  border-color: rgba(0,255,135,0.5);
  box-shadow: 0 8px 24px rgba(0,255,135,0.1);
}
.page-faq .faq-item summary {
  position: relative;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  padding: 16px 46px 16px 16px;
  font-weight: 700;
  color: var(--c-space);
  line-height: 1.4;
  transition: background var(--ease);
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary:hover {
  background: rgba(0,255,135,0.06);
}
.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,255,135,0.14);
  color: var(--c-teal);
  font-family: var(--font-mono);
  font-size: 1.125rem;
  transform: translateY(-50%);
  transition: background var(--ease), color var(--ease), transform var(--ease);
}
.page-faq .faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
  background: var(--c-lime);
  color: var(--c-space);
}
.page-faq .faq-item-q {
  flex: 1;
}
.page-faq .faq-item-id {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--c-teal);
  background: rgba(20,66,76,0.1);
  border-radius: 6px;
  padding: 3px 7px;
}
.page-faq .faq-item > p {
  margin: 0;
  padding: 0 16px 18px;
  color: var(--c-ink);
  font-size: 0.9375rem;
  line-height: 1.75;
}
.page-faq .faq-item > p a {
  color: var(--c-teal);
  font-weight: 600;
  text-underline-offset: 3px;
}
@media (min-width: 640px) {
  .page-faq .faq-item > p {
    padding: 0 20px 18px 46px;
  }
}

/* ===== 联系支持 ===== */
.page-faq .faq-contact {
  background: var(--c-space);
  padding: 64px 0;
}
.page-faq .faq-contact-card {
  position: relative;
  background: linear-gradient(135deg, var(--c-teal) 0%, var(--c-space) 100%);
  border-radius: 26px;
  padding: 32px 24px;
  overflow: hidden;
}
.page-faq .faq-contact-card::before {
  content: "";
  position: absolute;
  top: -48px;
  right: -48px;
  width: 180px;
  height: 180px;
  background: rgba(59,42,109,0.5);
  border-radius: 42% 58% 50% 50%;
  transform: rotate(24deg);
}
.page-faq .faq-contact-card::after {
  content: "";
  position: absolute;
  bottom: -70px;
  left: 24%;
  width: 140px;
  height: 140px;
  background: rgba(109,26,60,0.35);
  border-radius: 60% 40% 50% 50%;
  transform: rotate(-14deg);
}
.page-faq .faq-contact-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
@media (min-width: 820px) {
  .page-faq .faq-contact-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: 40px;
    align-items: stretch;
  }
  .page-faq .faq-contact-card {
    padding: 40px 44px;
  }
}
.page-faq .faq-contact-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--c-lime);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.page-faq .faq-contact-kicker::before {
  content: "";
  width: 24px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--c-lime);
}
.page-faq .faq-contact-title {
  margin: 6px 0 10px;
  font-size: clamp(1.875rem, 3vw, 2.625rem);
  font-weight: 900;
  color: var(--c-white);
  letter-spacing: -0.02em;
}
.page-faq .faq-contact-lead {
  max-width: 540px;
  margin: 0;
  color: rgba(242,244,248,0.8);
  line-height: 1.7;
}
.page-faq .faq-contact-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}
.page-faq .faq-contact-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  padding: 13px 0;
}
.page-faq .faq-contact-label {
  color: var(--c-silver);
  font-size: 0.875rem;
}
.page-faq .faq-contact-value {
  color: var(--c-lime);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 500;
  text-align: right;
}
.page-faq .faq-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-faq .faq-contact-aside {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 18px;
  padding: 22px;
  display: flex;
  flex-direction: column;
}
.page-faq .faq-aside-tag {
  display: block;
  color: var(--c-silver);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.page-faq .faq-contact-addr {
  margin: 0 0 14px;
  color: rgba(242,244,248,0.75);
  font-size: 0.875rem;
  line-height: 1.7;
}
.page-faq .faq-contact-note {
  color: var(--c-silver);
  font-size: 0.75rem;
  line-height: 1.7;
  margin: 14px 0 18px;
}
.page-faq .faq-contact-link {
  margin-top: auto;
  color: var(--c-lime);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  text-decoration: none;
  padding: 10px 0;
  border-top: 1px solid rgba(0,255,135,0.18);
  transition: color var(--ease), padding-left var(--ease);
}
.page-faq .faq-contact-link:hover {
  color: var(--c-white);
  padding-left: 6px;
}