/* ===== 支持中心页面专属样式 ===== */
.page-faq {
  --faq-panel: #121A2A;
  --faq-deep: #0A0E17;
  --faq-card: #101724;
  --faq-line: #223049;
  --faq-text: #F5F8FF;
  --faq-muted: #8B98B4;
  --faq-blue: #00A3FF;
  --faq-green: #39FF88;
  --faq-purple: #7B5CFF;
  --faq-yellow: #FFD166;
  --faq-r-lg: 28px;
  --faq-r-md: 18px;
  --faq-r-sm: 12px;
  color: var(--faq-text);
}

/* 横幅 */
.page-faq .faq-banner {
  margin-top: 16px;
  padding: clamp(28px, 4vw, 48px);
  border-radius: var(--faq-r-lg);
  border: 1px solid var(--faq-line);
  background:
    radial-gradient(1000px 420px at 88% -10%, rgba(123, 92, 255, 0.32), transparent 60%),
    radial-gradient(700px 260px at -10% 110%, rgba(0, 163, 255, 0.22), transparent 65%),
    linear-gradient(135deg, #121A2A 0%, #0A0E17 100%);
  overflow: hidden;
}
.page-faq .faq-banner__inner {
  display: grid;
  gap: 28px;
  align-items: center;
}
.page-faq .faq-banner .breadcrumb {
  margin-bottom: 18px;
}
.page-faq .faq-banner__kicker {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(57, 255, 136, 0.12);
  color: var(--faq-green);
  font-size: 12px;
  font-family: var(--mono);
  letter-spacing: 0.14em;
  margin-bottom: 12px;
}
.page-faq .faq-banner h1 {
  font-family: var(--heading);
  font-size: clamp(36px, 6vw, 60px);
  line-height: 1.05;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}
.page-faq .faq-banner__lead {
  max-width: 60ch;
  color: var(--faq-muted);
  font-size: clamp(14px, 1.4vw, 16px);
  line-height: 1.7;
  margin: 0 0 0;
}
.page-faq .faq-banner__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 26px;
}
.page-faq .faq-banner__tags .tag {
  text-decoration: none;
  font-size: 13px;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.page-faq .faq-banner__tags a.tag:hover,
.page-faq .faq-banner__tags a.tag:focus-visible {
  border-color: var(--faq-blue);
  color: var(--faq-text);
}
.page-faq .faq-banner__visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--faq-r-md);
  aspect-ratio: 16 / 6;
  object-fit: cover;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.4);
}
@media (min-width: 880px) {
  .page-faq .faq-banner__inner {
    grid-template-columns: 1.15fr 1fr;
    gap: 48px;
  }
}

/* 主题卡片 */
.page-faq .faq-topic {
  padding: clamp(56px, 7vw, 96px) 0 24px;
}
.page-faq .faq-topic__grid {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}
@media (min-width: 560px) {
  .page-faq .faq-topic__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 960px) {
  .page-faq .faq-topic__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
.page-faq .faq-topic-card {
  position: relative;
  display: block;
  padding: 24px;
  border-radius: var(--faq-r-md);
  background: linear-gradient(160deg, #0A0E17, #101724);
  border: 1px solid var(--faq-line);
  text-decoration: none;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.page-faq .faq-topic-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 4px;
  border-radius: var(--faq-r-md) var(--faq-r-md) 0 0;
  background: currentColor;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.page-faq .faq-topic-card:hover,
.page-faq .faq-topic-card:focus-visible {
  transform: translateY(-4px);
  border-color: currentColor;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.3);
}
.page-faq .faq-topic-card:hover::before,
.page-faq .faq-topic-card:focus-visible::before {
  opacity: 1;
}
.page-faq .faq-topic-card--blue { color: var(--faq-blue); }
.page-faq .faq-topic-card--green { color: var(--faq-green); }
.page-faq .faq-topic-card--purple { color: var(--faq-purple); }
.page-faq .faq-topic-card--yellow { color: var(--faq-yellow); }
.page-faq .faq-topic-card__num {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  color: currentColor;
  opacity: 0.85;
}
.page-faq .faq-topic-card__title {
  margin: 14px 0 8px;
  font-family: var(--heading);
  font-size: 20px;
  line-height: 1.3;
  color: var(--faq-text);
}
.page-faq .faq-topic-card__desc {
  margin: 0;
  color: var(--faq-muted);
  font-size: 13px;
  line-height: 1.6;
}
.page-faq .faq-topic-card__more {
  display: inline-block;
  margin-top: 18px;
  font-size: 13px;
  color: currentColor;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

/* 高频问题 */
.page-faq .faq-qa {
  padding: clamp(64px, 8vw, 108px) 0;
}
.page-faq .faq-qa__layout {
  display: grid;
  gap: 28px;
  margin-top: 32px;
  align-items: start;
}
@media (min-width: 880px) {
  .page-faq .faq-qa__layout {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 40px;
  }
}
.page-faq .faq-qa__sidebar {
  position: static;
}
@media (min-width: 880px) {
  .page-faq .faq-qa__sidebar {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}
.page-faq .faq-qa__sidebar-inner {
  display: flex;
  flex-wrap: nowrap;
  gap: 6px;
  overflow-x: auto;
  padding: 14px;
  background: rgba(18, 26, 42, 0.82);
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-r-md);
}
@media (min-width: 880px) {
  .page-faq .faq-qa__sidebar-inner {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
  }
}
.page-faq .faq-qa__sidebar-label {
  flex: 0 0 auto;
  padding: 4px 8px;
  font-size: 11px;
  font-family: var(--mono);
  letter-spacing: 0.12em;
  color: var(--faq-muted);
  text-transform: uppercase;
}
.page-faq .faq-qa__sidebar-link {
  flex: 0 0 auto;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--faq-muted);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.page-faq .faq-qa__sidebar-link:hover,
.page-faq .faq-qa__sidebar-link:focus-visible {
  color: var(--faq-text);
  border-color: var(--faq-line);
  background: rgba(0, 163, 255, 0.08);
}
.page-faq .faq-qa__sidebar-note {
  display: block;
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: var(--faq-r-sm);
  background: rgba(123, 92, 255, 0.1);
  border-left: 3px solid var(--faq-purple);
  color: var(--faq-muted);
  font-size: 13px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease;
}
.page-faq .faq-qa__sidebar-note:hover {
  color: var(--faq-text);
  background: rgba(123, 92, 255, 0.16);
}
.page-faq .faq-qa__toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}
@media (max-width: 540px) {
  .page-faq .faq-qa__toolbar {
    align-items: stretch;
  }
  .page-faq .faq-qa__expand {
    order: 1;
  }
  .page-faq .faq-qa__search {
    order: 2;
    flex-basis: 100%;
  }
}
.page-faq .faq-qa__search {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  height: 44px;
  padding: 0 16px;
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.page-faq .faq-qa__search:focus-within {
  border-color: var(--faq-blue);
  box-shadow: 0 0 0 3px rgba(0, 163, 255, 0.18);
}
.page-faq .faq-qa__search-icon {
  color: var(--faq-muted);
  flex: 0 0 auto;
}
.page-faq .faq-qa__search-input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  color: var(--faq-text);
  font: 400 14px / 1.5 var(--body);
}
.page-faq .faq-qa__search-input::placeholder {
  color: var(--faq-muted);
}
.page-faq .faq-qa__expand {
  white-space: nowrap;
}
.page-faq .faq-group {
  margin-bottom: 40px;
}
.page-faq .faq-group__title {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--heading);
  font-size: 18px;
  line-height: 1.4;
  color: var(--faq-text);
}
.page-faq .faq-group__title::before {
  content: "";
  width: 6px;
  height: 18px;
  border-radius: 999px;
  background: var(--faq-blue);
}
.page-faq .faq-item {
  display: block;
  margin-bottom: 12px;
  background: linear-gradient(135deg, rgba(18, 26, 42, 0.9), rgba(10, 14, 23, 0.6));
  border: 1px solid var(--faq-line);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.page-faq .faq-item[open] {
  border-color: rgba(0, 163, 255, 0.5);
  background: rgba(16, 23, 36, 0.95);
}
.page-faq .faq-item__q {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--faq-text);
  transition: color 0.2s ease;
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q::after {
  content: "";
  flex: 0 0 10px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--faq-blue);
  border-bottom: 2px solid var(--faq-blue);
  transform: rotate(45deg);
  transition: transform 0.25s ease;
}
.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(225deg);
}
.page-faq .faq-item__a {
  padding: 4px 20px 20px;
  color: var(--faq-muted);
  font-size: 14px;
  line-height: 1.75;
}
.page-faq .faq-item__a p {
  margin: 8px 0 0;
}
.page-faq .faq-item__a p:first-child {
  margin-top: 0;
}
.page-faq .faq-item__a a {
  color: var(--faq-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 数据更新说明 */
.page-faq .faq-rhythm {
  padding: clamp(48px, 6vw, 84px);
  border-radius: var(--faq-r-lg);
  border: 1px solid var(--faq-line);
  background:
    radial-gradient(600px 320px at 0% 0%, rgba(57, 255, 136, 0.1), transparent 55%),
    linear-gradient(145deg, #101724, #0A0E17);
}
.page-faq .faq-rhythm__layout {
  display: grid;
  gap: 32px;
  align-items: center;
}
@media (min-width: 880px) {
  .page-faq .faq-rhythm__layout {
    grid-template-columns: 1.05fr 1fr;
    gap: 48px;
  }
}
.page-faq .faq-rhythm__copy .tag {
  display: inline-flex;
  margin-bottom: 14px;
}
.page-faq .faq-rhythm__copy h2 {
  font-family: var(--heading);
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.2;
  margin: 0 0 14px;
}
.page-faq .faq-rhythm__copy > p {
  max-width: 56ch;
  color: var(--faq-muted);
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
}
.page-faq .faq-rhythm__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-faq .faq-rhythm__list li {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  align-items: start;
  padding: 18px;
  background: rgba(10, 14, 23, 0.7);
  border: 1px solid var(--faq-line);
  border-radius: 16px;
}
.page-faq .faq-rhythm__list .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(0, 163, 255, 0.12);
  color: var(--faq-blue);
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
}
.page-faq .faq-rhythm__list strong {
  display: block;
  margin-bottom: 4px;
  color: var(--faq-text);
  font-size: 15px;
}
.page-faq .faq-rhythm__list p {
  margin: 0;
  color: var(--faq-muted);
  font-size: 13px;
  line-height: 1.6;
}
.page-faq .faq-rhythm__visual {
  position: relative;
}
.page-faq .faq-rhythm__img img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 24px;
  aspect-ratio: 10 / 6;
  object-fit: cover;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.38);
}
.page-faq .faq-rhythm__badge {
  position: absolute;
  left: 18px;
  bottom: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 22px;
  border-radius: 999px;
  background: rgba(10, 14, 23, 0.84);
  border: 1px solid rgba(0, 163, 255, 0.4);
  backdrop-filter: blur(10px);
}
.page-faq .faq-rhythm__badge-main {
  font-family: var(--heading);
  font-size: 20px;
  line-height: 1;
  color: var(--faq-yellow);
}
.page-faq .faq-rhythm__loop {
  width: 26px;
  height: 26px;
  flex: 0 0 26px;
  color: var(--faq-green);
}
.page-faq .faq-rhythm__badge-sub {
  font-size: 11px;
  font-family: var(--mono);
  letter-spacing: 0.1em;
  color: var(--faq-muted);
  text-transform: uppercase;
}

/* 联系人工支持 */
.page-faq .faq-support {
  padding: clamp(48px, 6vw, 88px) 0 96px;
}
.page-faq .faq-support__panel {
  display: grid;
  gap: 28px;
  align-items: center;
  padding: clamp(28px, 5vw, 48px);
  border-radius: 32px;
  background: linear-gradient(135deg, rgba(18, 26, 42, 0.92), rgba(10, 14, 23, 1));
  border: 1px solid var(--faq-line);
}
@media (min-width: 880px) {
  .page-faq .faq-support__panel {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 44px;
  }
}
.page-faq .faq-support__text .tag {
  display: inline-flex;
  margin-bottom: 14px;
}
.page-faq .faq-support__text h2 {
  font-family: var(--heading);
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.2;
  margin: 0 0 14px;
}
.page-faq .faq-support__text p {
  margin: 0 0 22px;
  color: var(--faq-muted);
  font-size: 14px;
  line-height: 1.75;
}
.page-faq .faq-support__cards {
  display: grid;
  gap: 14px;
}
.page-faq .faq-support__card {
  display: block;
  padding: 18px;
  border-radius: 18px;
  background: rgba(0, 163, 255, 0.06);
  border: 1px solid var(--faq-line);
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}
.page-faq .faq-support__card:hover {
  border-color: var(--faq-blue);
  background: rgba(0, 163, 255, 0.1);
  transform: translateX(4px);
}
.page-faq .faq-support__label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--faq-muted);
  text-transform: uppercase;
}
.page-faq .faq-support__value {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--faq-text);
  word-break: break-all;
}