.page-faq {
  --faq-gap: clamp(20px, 3vw, 34px);
  position: relative;
  overflow-x: hidden;
  padding: clamp(26px, 4vw, 46px) 0 clamp(58px, 8vw, 100px);
  background:
    radial-gradient(118% 56% at 84% -10%, rgba(37, 230, 200, .15), transparent 62%),
    radial-gradient(88% 46% at 2% 8%, rgba(255, 107, 74, .10), transparent 58%),
    var(--bo-night);
  color: var(--bo-ice);
}

.page-faq::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .55;
  background-image: repeating-linear-gradient(180deg, rgba(37, 230, 200, .05) 0 1px, transparent 1px 7px);
}

.page-faq > * {
  position: relative;
  z-index: 1;
}

.page-faq .bo-breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .bo-breadcrumb a {
  color: var(--bo-slate);
  text-decoration: none;
  transition: color .2s ease;
}

.page-faq .bo-breadcrumb a:hover,
.page-faq .bo-breadcrumb a:focus-visible {
  color: var(--bo-cyan);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-top: clamp(4px, 1.4vw, 14px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: end;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-family: var(--bo-font-display);
  font-weight: 200;
  font-size: clamp(32px, 6vw, 66px);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--bo-ice);
}

.page-faq .faq-hero__title strong {
  display: block;
  font-weight: 900;
  color: var(--bo-glow);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-family: var(--bo-font-body);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: rgba(234, 242, 255, .82);
}

.page-faq .faq-hero__marks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__marks li {
  position: relative;
  padding-left: 14px;
  font-family: var(--bo-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--bo-slate);
}

.page-faq .faq-hero__marks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  margin-top: -3px;
  border-radius: 50%;
  background: var(--bo-cyan);
  box-shadow: 0 0 10px rgba(37, 230, 200, .8);
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--bo-line);
  background: rgba(14, 59, 65, .35);
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 30px 100%, 0 calc(100% - 30px));
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 分类胶囊 ---------- */

.page-faq .faq-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(26px, 4vw, 42px);
  padding-top: clamp(22px, 3vw, 32px);
  border-top: 1px solid var(--bo-line-soft);
}

.page-faq .faq-tab {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border: 1px solid var(--bo-line);
  border-radius: 999px;
  background: rgba(14, 59, 65, .45);
  color: var(--bo-ice);
  font-family: var(--bo-font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .05em;
  text-decoration: none;
  transition: background .22s ease, color .22s ease, border-color .22s ease, transform .22s ease;
}

.page-faq .faq-tab:hover,
.page-faq .faq-tab:focus-visible {
  background: var(--bo-cyan);
  border-color: var(--bo-cyan);
  color: var(--bo-ink);
  transform: translateY(-2px);
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  padding-top: clamp(48px, 7vw, 88px);
  scroll-margin-top: 130px;
}

.page-faq .faq-group__head {
  max-width: 72ch;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-group__title {
  margin: 10px 0 0;
  font-family: var(--bo-font-display);
  font-weight: 300;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--bo-ice);
}

.page-faq .faq-group__intro {
  margin: 14px 0 0;
  font-family: var(--bo-font-body);
  font-size: clamp(14px, 1.5vw, 16px);
  line-height: 1.85;
  color: rgba(234, 242, 255, .76);
}

.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: start;
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-list {
  counter-reset: faq;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-item {
  counter-increment: faq;
  border: 1px solid var(--bo-line-soft);
  border-left: 3px solid rgba(37, 230, 200, .55);
  background: linear-gradient(180deg, rgba(14, 59, 65, .62), rgba(10, 22, 40, .3));
  transition: border-color .24s ease, background .24s ease;
}

.page-faq .faq-item:hover {
  border-left-color: var(--bo-cyan);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--bo-font-display);
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--bo-ice);
  transition: color .2s ease;
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary::before {
  content: "Q" counter(faq, decimal-leading-zero);
  flex: none;
  padding-top: 3px;
  font-family: var(--bo-font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: .1em;
  color: var(--bo-cyan);
}

.page-faq .faq-item > summary::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--bo-font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--bo-cyan);
  transition: color .2s ease;
}

.page-faq .faq-item[open] > summary::after {
  content: "−";
}

.page-faq .faq-item[open] {
  border-color: var(--bo-line);
  border-left-color: var(--bo-cyan);
  background: linear-gradient(180deg, rgba(14, 59, 65, .94), rgba(10, 22, 40, .38));
}

.page-faq .faq-item[open] > summary {
  color: var(--bo-glow);
}

.page-faq .faq-item > .bo-disclosure__body {
  padding: 0 20px 20px;
}

.page-faq .faq-item > .bo-disclosure__body p {
  margin: 0;
  padding-left: 16px;
  border-left: 1px solid var(--bo-line);
  font-family: var(--bo-font-body);
  font-size: clamp(14px, 1.5vw, 16px);
  line-height: 1.9;
  color: rgba(234, 242, 255, .78);
}

/* ---------- 账号区侧栏 ---------- */

.page-faq .faq-aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-faq .faq-aside__media {
  margin: 0;
  border: 1px solid var(--bo-line-soft);
  background: rgba(4, 7, 13, .5);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-faq .faq-aside__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-faq .faq-aside__media .bo-media__caption {
  display: block;
  padding: 12px 14px;
  border-top: 1px solid var(--bo-line-soft);
  font-family: var(--bo-font-round);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--bo-slate);
}

.page-faq .faq-aside__note {
  padding: 18px 20px;
  border: 1px solid var(--bo-line);
  background: rgba(14, 59, 65, .5);
}

.page-faq .faq-aside__label {
  margin: 0 0 8px;
  font-family: var(--bo-font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--bo-cyan);
}

.page-faq .faq-aside__note p:last-child {
  margin: 0;
  font-family: var(--bo-font-body);
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(234, 242, 255, .76);
}

/* ---------- 旧版只读区 ---------- */

.page-faq .faq-list--legacy .faq-item {
  border-left-color: rgba(126, 143, 166, .55);
  background: linear-gradient(180deg, rgba(4, 7, 13, .86), rgba(10, 22, 40, .42));
}

.page-faq .faq-list--legacy .faq-item > summary::before,
.page-faq .faq-list--legacy .faq-item > summary::after {
  color: var(--bo-slate);
}

.page-faq .faq-list--legacy .faq-item[open] {
  border-left-color: var(--bo-glow);
}

.page-faq .faq-list--legacy .faq-item[open] > summary {
  color: var(--bo-ice);
}

.page-faq .faq-list--legacy .faq-item[open] > summary::after {
  color: var(--bo-glow);
}

.page-faq .faq-list--legacy .faq-item > .bo-disclosure__body p {
  border-left-color: var(--bo-line-soft);
}

/* ---------- 客服引导条 ---------- */

.page-faq .faq-outro {
  padding-top: clamp(52px, 7vw, 92px);
}

.page-faq .faq-outro__card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
  padding: clamp(26px, 4vw, 46px);
  background: var(--bo-sand);
  color: var(--bo-ink);
  clip-path: polygon(0 0, calc(100% - 34px) 0, 100% 34px, 100% 100%, 34px 100%, 0 calc(100% - 34px));
}

.page-faq .faq-outro__label {
  margin: 0;
  font-family: var(--bo-font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: rgba(4, 7, 13, .55);
}

.page-faq .faq-outro__title {
  margin: 10px 0 0;
  font-family: var(--bo-font-display);
  font-weight: 800;
  font-size: clamp(22px, 2.8vw, 32px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--bo-ink);
}

.page-faq .faq-outro__desc {
  margin: 12px 0 0;
  font-family: var(--bo-font-body);
  font-size: 15px;
  line-height: 1.85;
  color: rgba(4, 7, 13, .78);
}

.page-faq .faq-outro__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-outro__meta li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--bo-font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--bo-ink);
  word-break: break-all;
}

.page-faq .faq-outro__meta span {
  font-size: 11px;
  letter-spacing: .12em;
  color: rgba(4, 7, 13, .5);
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: end;
}

.page-faq .faq-outro .bo-btn--primary {
  background: var(--bo-ink);
  border-color: var(--bo-ink);
  color: var(--bo-sand);
}

.page-faq .faq-outro .bo-btn--primary:hover,
.page-faq .faq-outro .bo-btn--primary:focus-visible {
  background: var(--bo-coral);
  border-color: var(--bo-coral);
  color: var(--bo-ink);
}

.page-faq .faq-outro .bo-btn--ghost {
  background: transparent;
  border-color: rgba(4, 7, 13, .4);
  color: var(--bo-ink);
}

.page-faq .faq-outro .bo-btn--ghost:hover,
.page-faq .faq-outro .bo-btn--ghost:focus-visible {
  border-color: var(--bo-ink);
  background: rgba(4, 7, 13, .08);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-item > summary {
    padding: 20px 26px;
  }

  .page-faq .faq-item > .bo-disclosure__body {
    padding: 0 26px 24px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: clamp(30px, 4vw, 56px);
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, .58fr);
    gap: clamp(24px, 3vw, 40px);
  }

  .page-faq .faq-outro__card {
    grid-template-columns: minmax(0, 1.55fr) auto;
    align-items: end;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-hero__media {
    clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  }

  .page-faq .faq-outro__card {
    clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
  }

  .page-faq .faq-item > summary::before {
    font-size: 11px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tab,
  .page-faq .faq-item,
  .page-faq .faq-item > summary,
  .page-faq .faq-item > summary::after {
    transition: none;
  }
}