.page-faq {
  display: block;
  overflow-x: clip;
  color: var(--text);
  padding-bottom: 88px;
}

.page-faq .shell {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 20px;
  box-sizing: border-box;
}

.page-faq #faq-top {
  padding-top: 24px;
  scroll-margin-top: 88px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 28px 0 64px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -160px;
  right: -120px;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(31, 227, 210, 0.2), rgba(11, 58, 68, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(36px, 8.6vw, 76px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-hero__text {
  margin: 0 0 28px;
  max-width: 48ch;
  font-family: var(--font-text);
  font-size: 17px;
  line-height: 1.78;
  color: var(--text-soft);
}

/* ---------- 搜索框 ---------- */

.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 520px;
  padding: 0 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  transition: border-color 0.24s var(--ease), box-shadow 0.24s var(--ease), background-color 0.24s var(--ease);
}

.page-faq .faq-search:focus-within {
  border-color: var(--cyan);
  background: #0A1D2E;
  box-shadow: 0 0 0 3px rgba(31, 227, 210, 0.16);
}

.page-faq .faq-search__icon {
  display: inline-flex;
  flex: 0 0 auto;
  color: var(--muted);
  transition: color 0.24s var(--ease);
}

.page-faq .faq-search:focus-within .faq-search__icon {
  color: var(--cyan);
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 16px 0;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--text);
  font-family: var(--font-text);
  font-size: 16px;
  line-height: 1.4;
  appearance: none;
}

.page-faq .faq-search__input::placeholder {
  color: var(--muted);
}

.page-faq .faq-search__hint {
  margin: 12px 0 0;
  max-width: 48ch;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-hero__media {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 分组概览 ---------- */

.page-faq .faq-overview {
  padding: 8px 0 0;
}

.page-faq .faq-groups {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-group-card {
  --faq-accent: var(--cyan);
  border: 1px solid var(--border);
  border-top: 3px solid var(--faq-accent);
  border-radius: var(--radius-sm);
  background: var(--surface);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease), background-color 0.24s var(--ease);
}

.page-faq .faq-group-card--register {
  --faq-accent: var(--coral);
}

.page-faq .faq-group-card--query {
  --faq-accent: var(--violet);
}

.page-faq .faq-group-card--profile {
  --faq-accent: var(--mint);
}

.page-faq .faq-group-card--security {
  --faq-accent: var(--cyan);
}

.page-faq .faq-group-card--mobile {
  --faq-accent: var(--amber);
}

.page-faq .faq-group-card:hover,
.page-faq .faq-group-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--cyan);
  border-top-color: var(--faq-accent);
  background: #10293F;
}

.page-faq .faq-group-card__link {
  display: block;
  padding: 22px 20px 24px;
  color: inherit;
  text-decoration: none;
}

.page-faq .faq-group-card__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-group-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--faq-accent);
}

.page-faq .faq-group-card__name {
  display: block;
  margin-top: 12px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
}

.page-faq .faq-group-card__desc {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.68;
  color: var(--muted);
}

/* ---------- 问答分组 ---------- */

.page-faq .faq-group {
  padding-top: 76px;
  scroll-margin-top: 84px;
}

.page-faq .faq-group--register {
  --faq-accent: var(--coral);
}

.page-faq .faq-group--query {
  --faq-accent: var(--violet);
}

.page-faq .faq-group--profile {
  --faq-accent: var(--mint);
}

.page-faq .faq-group--security {
  --faq-accent: var(--cyan);
}

.page-faq .faq-group--mobile {
  --faq-accent: var(--amber);
}

.page-faq .faq-group__head {
  position: relative;
  max-width: 60ch;
  padding-left: 18px;
  margin-bottom: 28px;
}

.page-faq .faq-group__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 8px;
  width: 3px;
  border-radius: 3px;
  background: var(--faq-accent, var(--cyan));
}

.page-faq .faq-group__count {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--faq-accent, var(--cyan));
}

.page-faq .faq-group__head .section__title {
  margin: 10px 0 14px;
}

.page-faq .faq-group__head .section__lead {
  margin: 0;
  color: var(--text-soft);
}

.page-faq .faq-amber-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 18px 0 0;
  padding: 7px 14px;
  border: 1px solid rgba(255, 196, 107, 0.42);
  border-radius: 999px;
  background: rgba(255, 196, 107, 0.09);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-faq .faq-amber-tag__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
}

/* ---------- 折叠问答 ---------- */

.page-faq .accordion {
  border-top: 1px solid var(--border);
}

.page-faq .accordion__item {
  position: relative;
  border-bottom: 1px solid var(--border);
}

.page-faq .accordion__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 2px;
  border-radius: 2px;
  background: var(--faq-accent, var(--cyan));
  opacity: 0;
  transform: scaleY(0.35);
  transform-origin: top center;
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease);
  pointer-events: none;
}

.page-faq .accordion__item[data-open="true"]::before {
  opacity: 1;
  transform: scaleY(1);
}

.page-faq .faq-q {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .accordion__trigger {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 20px 4px 20px 18px;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  color: var(--text);
  font-family: var(--font-text);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.6;
  transition: color 0.2s var(--ease);
}

.page-faq .accordion__trigger:hover {
  color: var(--cyan);
}

.page-faq .accordion__trigger:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-q__marker {
  position: relative;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  margin-top: 7px;
}

.page-faq .faq-q__marker::before,
.page-faq .faq-q__marker::after {
  content: "";
  position: absolute;
  border-radius: 2px;
  background: var(--muted);
  transition: transform 0.24s var(--ease), background-color 0.24s var(--ease);
}

.page-faq .faq-q__marker::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-q__marker::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .accordion__item[data-open="true"] .faq-q__marker::after {
  transform: scaleY(0);
}

.page-faq .accordion__item[data-open="true"] .faq-q__marker::before {
  background: var(--faq-accent, var(--cyan));
}

.page-faq .accordion__panel-inner {
  max-width: 68ch;
  padding: 0 24px 22px 18px;
  font-family: var(--font-text);
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-faq .accordion__panel-inner p {
  margin: 0 0 12px;
}

.page-faq .faq-backtop {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-backtop:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 移动端分组的两栏 ---------- */

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

.page-faq .faq-mobile__media {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  background: linear-gradient(160deg, #0B3A44 0%, var(--surface) 78%);
}

.page-faq .faq-mobile__media .media-frame__caption {
  display: block;
  padding: 14px 18px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 人工支持 ---------- */

.page-faq .faq-group--help {
  padding-top: 84px;
}

.page-faq .faq-help {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.page-faq .faq-help__lead {
  max-width: 56ch;
}

.page-faq .faq-help__lead .section__title {
  margin: 10px 0 18px;
}

.page-faq .faq-help__text {
  margin: 0 0 30px;
  font-family: var(--font-text);
  font-size: 17px;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-faq .faq-help__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--border);
}

.page-faq .faq-help__stats .stat {
  padding: 20px 18px;
  background: var(--surface);
}

.page-faq .faq-help__stats .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.1;
  color: var(--cyan);
}

.page-faq .faq-help__stats .stat__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-channels {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-channels__item {
  padding: 20px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--coral);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.page-faq .faq-channels__key {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-channels__val {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-faq .faq-channels__note {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.66;
  color: var(--muted);
}

.page-faq .faq-help__links {
  display: grid;
  gap: 10px;
  margin: 0 0 22px;
}

.page-faq .faq-help__links .btn {
  justify-content: center;
  text-align: center;
}

.page-faq .faq-help__cross {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-help__cross a {
  color: var(--text-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-help__cross a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-help__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 44px 0 88px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.85fr);
    gap: 56px;
  }

  .page-faq .faq-hero__title {
    font-size: clamp(52px, 6.4vw, 96px);
  }

  .page-faq .faq-groups {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
  }

  .page-faq .faq-group {
    padding-top: 104px;
  }

  .page-faq .faq-group--help {
    padding-top: 112px;
  }

  .page-faq .faq-mobile__body {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    gap: 40px;
  }

  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 56px;
    padding-top: 44px;
  }

  .page-faq .faq-group__head .section__title {
    font-size: clamp(30px, 3.1vw, 42px);
  }
}

@media (min-width: 1024px) {
  .page-faq .shell {
    padding-inline: 32px;
  }

  .page-faq #faq-top {
    scroll-margin-top: 48px;
  }

  .page-faq .faq-group {
    scroll-margin-top: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-group-card,
  .page-faq .accordion__item::before,
  .page-faq .faq-q__marker::before,
  .page-faq .faq-q__marker::after {
    transition: none;
  }
}