/* ===== 服务支持：常见问题与帮助中心 ===== */
.page-faq {
  --faq-gold-soft: rgba(201, 162, 39, 0.18);
  --faq-cyan-soft: rgba(0, 229, 255, 0.22);
  position: relative;
  overflow-x: clip;
  background:
    radial-gradient(ellipse at 96% 6%, rgba(201, 162, 39, 0.08), transparent 42%),
    radial-gradient(ellipse at 3% 68%, rgba(26, 11, 46, 0.6), transparent 55%);
}

/* 背景纹理 */
.page-faq .faq-texture {
  position: absolute;
  top: 120px;
  right: -210px;
  width: 250px;
  height: 375px;
  object-fit: cover;
  opacity: 0.16;
  border-radius: 18px;
  transform: rotate(8deg);
  pointer-events: none;
  z-index: 0;
}

/* 面包屑 */
.page-faq .breadcrumbs {
  position: relative;
  z-index: 1;
  padding-top: 28px;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  z-index: 1;
  padding: 52px 0 28px;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: end;
}

.page-faq .faq-hero__kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--c-cyan);
}

.page-faq .faq-hero__kicker::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--gradient-gold);
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 840px;
  font-family: var(--font-title);
  font-size: clamp(30px, 5.2vw, 50px);
  line-height: 1.24;
  color: var(--c-white);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 660px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-gray);
}

.page-faq .faq-hero__aside {
  display: none;
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 36px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.page-faq .faq-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-hero__stat-num {
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-faq .faq-hero__stat-label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-gray);
}

/* 主体两列 */
.page-faq .faq-body {
  position: relative;
  z-index: 1;
  padding: 48px 0 36px;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
  align-items: start;
}

/* 侧边栏 */
.page-faq .faq-sidebar__inner {
  position: relative;
  padding: 4px 0 0;
}

.page-faq .faq-sidebar__kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-cyan);
}

.page-faq .faq-sidebar__title {
  margin: 0 0 20px;
  font-family: var(--font-title);
  font-size: 22px;
  color: var(--c-white);
}

.page-faq .faq-sidebar__filters {
  display: flex;
  flex-wrap: nowrap;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
}

.page-faq .faq-sidebar__filters::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-sidebar .filter-btn {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 10px;
  padding: 13px 16px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--c-gray);
  font-family: var(--font-body);
  font-size: 15px;
  cursor: pointer;
  transition: color 0.3s ease, background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-faq .faq-sidebar .filter-btn:hover {
  color: var(--c-white);
  border-color: var(--faq-cyan-soft);
}

.page-faq .faq-sidebar .filter-btn.is-active {
  color: var(--c-deep);
  background: var(--gradient-gold);
  border-color: transparent;
  font-weight: 700;
  box-shadow: 0 10px 28px rgba(201, 162, 39, 0.25);
}

.page-faq .faq-sidebar__filter-count {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
}

.page-faq .faq-sidebar .filter-btn.is-active .faq-sidebar__filter-count {
  background: rgba(10, 17, 40, 0.16);
}

.page-faq .faq-sidebar__note {
  margin: 30px 0 0;
  padding: 18px 18px 20px;
  border: 1px solid rgba(201, 162, 39, 0.22);
  border-left: 3px solid var(--c-gold);
  border-radius: var(--radius);
}

.page-faq .faq-sidebar__note-title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-gold-light);
}

.page-faq .faq-sidebar__note p {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-gray);
}

/* 折叠区 */
.page-faq .faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 46px;
}

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 18px;
  font-family: var(--font-title);
  font-size: 23px;
  line-height: 1.3;
  color: var(--c-white);
}

.page-faq .faq-group__num {
  padding: 5px 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-gold-light);
  border: 1px solid rgba(201, 162, 39, 0.35);
  border-radius: 6px;
  line-height: 1;
}

.page-faq .faq-item {
  margin-bottom: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
  transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.page-faq .faq-item.is-active {
  background: var(--c-glass);
  border-color: rgba(0, 229, 255, 0.28);
  box-shadow: 0 16px 44px rgba(10, 17, 40, 0.55);
}

.page-faq .faq-item__q {
  margin: 0;
}

.page-faq .faq-item__toggle {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 20px 20px 20px 22px;
  border: 0;
  background: transparent;
  color: var(--c-white);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  border-radius: var(--radius);
}

.page-faq .faq-item__no {
  flex-shrink: 0;
  min-width: 26px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
  color: var(--c-gold-light);
  opacity: 0.85;
}

.page-faq .faq-item__text {
  flex: 1;
}

.page-faq .faq-item__arrow {
  flex-shrink: 0;
  width: 9px;
  height: 9px;
  margin-top: -4px;
  border-right: 2px solid var(--c-cyan);
  border-bottom: 2px solid var(--c-cyan);
  transform: rotate(45deg);
  transition: transform 0.35s ease, border-color 0.35s ease;
}

.page-faq .faq-item.is-active .faq-item__arrow {
  border-color: var(--c-gold-light);
  transform: rotate(-135deg);
}

/* 答案默认可见：保证无脚本环境完整可读 */
.page-faq .faq-item__a {
  display: block;
}

.page-faq .faq-item__a p {
  margin: 0;
  padding: 0 24px 24px 62px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-gray);
}

.page-faq .faq-item__a a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.35);
  transition: color 0.3s ease, border-color 0.3s ease;
}

.page-faq .faq-item__a a:hover {
  color: var(--c-gold-light);
  border-color: var(--c-gold-light);
}

/* 脚本可用时折叠，仅展开 is-active 项 */
@media (scripting: enabled) {
  .page-faq .faq-item__a {
    display: none;
  }

  .page-faq .faq-item.is-active .faq-item__a {
    display: block;
  }
}

/* 联系卡片 */
.page-faq .faq-help {
  position: relative;
  z-index: 1;
  padding: 44px 0 80px;
}

.page-faq .faq-help__card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding: 30px 26px;
  border: 1px solid rgba(201, 162, 39, 0.28);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(26, 11, 46, 0.72), rgba(10, 17, 40, 0.5)),
    var(--c-glass);
}

.page-faq .faq-help__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--c-cyan);
}

.page-faq .faq-help__title {
  margin: 0 0 14px;
  font-family: var(--font-title);
  font-size: clamp(24px, 3.4vw, 32px);
  color: var(--c-white);
}

.page-faq .faq-help__lead {
  margin: 0 0 24px;
  max-width: 540px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-gray);
}

.page-faq .faq-help__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 12px 14px;
  border-left: 2px solid rgba(201, 162, 39, 0.55);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
}

.page-faq .faq-help__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-gold-light);
}

.page-faq .faq-help__item span,
.page-faq .faq-help__item a {
  font-size: 15px;
  line-height: 1.55;
  color: var(--c-white);
  text-decoration: none;
  word-break: break-all;
}

.page-faq .faq-help__item a:hover {
  color: var(--c-cyan);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-help__img {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  object-fit: cover;
  align-self: center;
  justify-self: center;
}

/* 桌面断点 */
@media (min-width: 1024px) {
  .page-faq .faq-texture {
    width: 380px;
    height: 570px;
    right: -180px;
  }

  .page-faq .faq-hero {
    padding-top: 68px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 1fr auto;
  }

  .page-faq .faq-hero__aside {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 150px;
    height: 150px;
    border: 1px solid rgba(201, 162, 39, 0.32);
    border-radius: 50%;
  }

  .page-faq .faq-hero__aside::before {
    content: "";
    position: absolute;
    inset: -10px;
    border: 1px dashed rgba(201, 162, 39, 0.18);
    border-radius: 50%;
  }

  .page-faq .faq-hero__mark {
    font-family: var(--font-title);
    font-size: 72px;
    line-height: 1;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 44px;
  }

  .page-faq .faq-body {
    padding: 64px 0 52px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 60px;
  }

  .page-faq .faq-sidebar {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-sidebar__inner {
    padding-left: 0;
  }

  .page-faq .faq-sidebar__inner::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    height: 100%;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--c-gold), rgba(201, 162, 39, 0.06), transparent);
  }

  .page-faq .faq-sidebar__kicker {
    margin-left: 20px;
  }

  .page-faq .faq-sidebar__title {
    margin-left: 20px;
  }

  .page-faq .faq-sidebar__filters {
    flex-direction: column;
    align-items: stretch;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-sidebar .filter-btn {
    width: 100%;
    justify-content: space-between;
  }

  .page-faq .faq-help {
    padding-top: 56px;
  }

  .page-faq .faq-help__card {
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 36px;
    padding: 40px 44px;
  }

  .page-faq .faq-help__list {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .page-faq .faq-help__img {
    width: 360px;
    height: 270px;
    align-self: center;
  }
}