.page-faq {
  --faq-rail-w: 236px;
  --faq-line: rgba(34, 48, 90, 0.88);
  --faq-surface: rgba(14, 26, 56, 0.68);
  color: var(--star);
}

/* ---------- hero ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(18px, 3vw, 34px) 0 clamp(44px, 8vw, 92px);
}

.page-faq .faq-hero__aura {
  position: absolute;
  inset: -30% -18% auto -18%;
  height: 130%;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(56% 46% at 78% 16%, rgba(124, 92, 255, 0.36), transparent 68%),
    radial-gradient(48% 44% at 10% 4%, rgba(23, 179, 196, 0.28), transparent 72%);
}

.page-faq .faq-hero__line {
  position: absolute;
  left: -8%;
  right: -8%;
  bottom: 0;
  height: 1px;
  z-index: -1;
  background: linear-gradient(90deg, transparent, var(--lake), var(--violet), transparent);
  opacity: 0.55;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  max-width: 17em;
  font-size: clamp(2rem, 6.2vw, 3.9rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero .lede {
  margin-top: clamp(16px, 2.4vw, 24px);
  max-width: 40em;
}

.page-faq .faq-jump {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--faq-line);
  background: var(--faq-surface);
  color: var(--star);
  font-size: 0.92rem;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-jump__link::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lake);
  flex: none;
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--lake);
  color: var(--lake);
  transform: translateY(-2px);
}

/* ---------- 三步速查 ---------- */
.page-faq .faq-quick {
  padding: var(--band) 0;
}

.page-faq .quick-grid {
  display: grid;
  gap: clamp(28px, 4vw, 46px);
  margin-top: clamp(26px, 4vw, 42px);
}

.page-faq .quick-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .quick-step {
  position: relative;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 18px;
  padding-bottom: 28px;
}

.page-faq .quick-step:last-child {
  padding-bottom: 0;
}

.page-faq .quick-step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 28px;
  top: 62px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--lake), rgba(23, 179, 196, 0.06));
}

.page-faq .quick-step__no {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-pill);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--gold);
  background: linear-gradient(160deg, rgba(23, 179, 196, 0.24), rgba(6, 10, 24, 0.92));
  border: 1px solid rgba(23, 179, 196, 0.45);
  box-shadow: 0 14px 30px -22px rgba(23, 179, 196, 0.95);
}

.page-faq .quick-step__title {
  margin: 6px 0 0;
  font-size: 1.16rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .quick-step__text {
  margin: 8px 0 0;
  color: var(--mist);
  font-size: 0.96rem;
  line-height: 1.75;
}

.page-faq .quick-step__expect {
  margin: 10px 0 0;
  padding-left: 11px;
  border-left: 2px solid rgba(23, 179, 196, 0.45);
  color: var(--lake);
  font-size: 0.87rem;
  line-height: 1.7;
}

.page-faq .quick-figure {
  margin: 0;
}

.page-faq .quick-figure .media {
  border-radius: var(--radius-lg);
}

.page-faq .quick-figure figcaption {
  margin-top: 12px;
  color: var(--mist);
  font-size: 0.83rem;
  line-height: 1.7;
}

/* ---------- 双栏主体 ---------- */
.page-faq .faq-body {
  padding-bottom: var(--band);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(22px, 3vw, 44px);
}

.page-faq .faq-rail {
  padding: 14px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--faq-line);
  background: var(--faq-surface);
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-faq .faq-rail__nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: none;
}

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

.page-faq .faq-rail__link {
  flex: 0 0 auto;
  display: block;
  padding: 9px 15px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  color: var(--mist);
  font-size: 0.92rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--star);
  border-color: var(--faq-line);
}

.page-faq .faq-rail__link.is-active {
  color: var(--deep);
  background: linear-gradient(120deg, var(--lake), #2fd2df);
  font-weight: 600;
  border-color: transparent;
}

.page-faq .faq-rail__note {
  display: none;
  margin: 14px 0 0;
  color: var(--mist);
  font-size: 0.82rem;
  line-height: 1.7;
}

/* ---------- 章节 ---------- */
.page-faq .faq-block {
  scroll-margin-top: 112px;
}

.page-faq .faq-block + .faq-block {
  margin-top: clamp(42px, 6vw, 70px);
}

.page-faq .faq-block__head {
  margin-bottom: 20px;
}

.page-faq .faq-block__no {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--violet);
}

.page-faq .faq-block h2 {
  margin: 0;
  font-size: clamp(1.35rem, 3.2vw, 1.95rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.01em;
}

.page-faq .faq-block__intro {
  margin: 12px 0 0;
  max-width: 40em;
  color: var(--mist);
  font-size: 0.96rem;
  line-height: 1.78;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
  background: var(--faq-surface);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: 12px;
}

.page-faq .faq-item[open] {
  border-color: rgba(23, 179, 196, 0.55);
  background: rgba(16, 27, 56, 0.9);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--star);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-item > summary:hover,
.page-faq .faq-item[open] > summary {
  color: var(--lake);
}

.page-faq .faq-item__q {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
}

.page-faq .faq-mark {
  position: relative;
  width: 18px;
  height: 18px;
  flex: none;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transform: translateY(-50%);
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.page-faq .faq-mark::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .faq-item[open] .faq-mark::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 0 18px 20px;
}

.page-faq .faq-item__body p {
  margin: 0 0 12px;
  color: var(--mist);
  font-size: 0.95rem;
  line-height: 1.78;
}

.page-faq .faq-item__body p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__body .btn {
  margin-top: 4px;
}

/* ---------- 步骤列表 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  counter-reset: st;
}

.page-faq .steps > li {
  position: relative;
  margin-top: 14px;
  padding-left: 36px;
}

.page-faq .steps > li::before {
  counter-increment: st;
  content: counter(st, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-pill);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gold);
  border: 1px solid rgba(255, 194, 75, 0.4);
  background: rgba(255, 194, 75, 0.08);
}

.page-faq .steps > li > p {
  margin: 0;
  color: var(--star);
  font-size: 0.94rem;
  line-height: 1.76;
}

.page-faq .steps > li > p strong {
  font-weight: 700;
  color: var(--star);
}

.page-faq .step__expect {
  display: block;
  margin-top: 8px;
  padding-left: 12px;
  border-left: 2px solid rgba(23, 179, 196, 0.45);
  color: var(--lake);
  font-size: 0.86rem;
  line-height: 1.7;
}

/* ---------- 兼容胶囊 ---------- */
.page-faq .compat-chips {
  list-style: none;
  margin: 18px 0 6px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.page-faq .compat-chips > li {
  padding: 7px 15px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--faq-line);
  background: var(--faq-surface);
  color: var(--mist);
  font-size: 0.84rem;
  font-family: var(--font-mono);
}

.page-faq .compat-chips > li.is-key {
  color: var(--gold);
  border-color: rgba(255, 194, 75, 0.42);
  background: rgba(255, 194, 75, 0.07);
}

/* ---------- 登录章节 ---------- */
.page-faq .login-split {
  display: grid;
  gap: 22px;
  margin-top: 22px;
}

.page-faq .login-figure {
  margin: 0;
}

.page-faq .login-figure .media {
  border-radius: var(--radius-lg);
}

.page-faq .login-figure figcaption {
  margin-top: 12px;
  color: var(--mist);
  font-size: 0.83rem;
  line-height: 1.7;
}

.page-faq .login-flow {
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(124, 92, 255, 0.32);
  background: linear-gradient(150deg, rgba(124, 92, 255, 0.16), rgba(14, 26, 56, 0.9) 60%);
  margin-bottom: 14px;
}

.page-faq .login-flow__title {
  margin: 0 0 10px;
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  color: var(--violet);
}

.page-faq .login-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: lf;
  display: grid;
  gap: 8px;
}

.page-faq .login-flow__steps > li {
  position: relative;
  padding-left: 34px;
  color: var(--star);
  font-size: 0.94rem;
  line-height: 1.7;
}

.page-faq .login-flow__steps > li::before {
  counter-increment: lf;
  content: counter(lf);
  position: absolute;
  left: 0;
  top: 2px;
  width: 22px;
  height: 22px;
  border-radius: var(--radius-pill);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--deep);
  background: var(--violet);
}

.page-faq .login-flow__note {
  margin: 12px 0 0;
  color: var(--mist);
  font-size: 0.85rem;
  line-height: 1.7;
}

/* ---------- 人工协助 ---------- */
.page-faq .faq-support-grid {
  display: grid;
  gap: clamp(22px, 3vw, 38px);
  margin-top: 20px;
}

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

.page-faq .check-list li {
  position: relative;
  padding-left: 28px;
  color: var(--mist);
  font-size: 0.94rem;
  line-height: 1.72;
}

.page-faq .check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 12px;
  height: 12px;
  border-radius: 4px;
  border: 1px solid rgba(23, 179, 196, 0.55);
  background: rgba(23, 179, 196, 0.14);
}

.page-faq .contact-card {
  padding: 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--faq-line);
  background: linear-gradient(150deg, rgba(23, 179, 196, 0.15), rgba(14, 26, 56, 0.92) 62%);
}

.page-faq .contact-card__title {
  margin: 0 0 14px;
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  color: var(--lake);
}

.page-faq .contact-card__row {
  margin: 0 0 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: baseline;
  font-size: 0.92rem;
}

.page-faq .contact-card__row span {
  color: var(--mist);
  font-size: 0.84rem;
}

.page-faq .contact-card__row strong {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--star);
  word-break: break-all;
}

.page-faq .contact-card__note {
  margin: 14px 0 18px;
  color: var(--mist);
  font-size: 0.85rem;
  line-height: 1.72;
}

.page-faq .faq-outro {
  margin: clamp(36px, 5vw, 56px) 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--faq-line);
  color: var(--mist);
  font-size: 0.9rem;
  line-height: 1.8;
}

.page-faq .faq-outro a {
  color: var(--lake);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .login-split {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 920px) {
  .page-faq .quick-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-rail__nav {
    display: grid;
    gap: 4px;
    overflow: visible;
  }

  .page-faq .faq-rail__link {
    white-space: normal;
  }

  .page-faq .faq-rail__note {
    display: block;
  }
}

@media (min-width: 1020px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }

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

@media (min-width: 1280px) {
  .page-faq .faq-rail {
    padding: 18px;
  }
}

@media (max-width: 1019px) {
  .page-faq .faq-rail {
    position: sticky;
    top: 8px;
    z-index: 6;
    padding: 10px 12px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }

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

@media (max-width: 520px) {
  .page-faq .quick-step {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 14px;
  }

  .page-faq .quick-step__no {
    width: 46px;
    height: 46px;
    font-size: 0.92rem;
  }

  .page-faq .quick-step:not(:last-child)::before {
    left: 22px;
    top: 50px;
  }

  .page-faq .faq-item > summary {
    padding: 14px 15px;
  }

  .page-faq .faq-item__body {
    padding: 0 15px 18px;
  }

  .page-faq .contact-card {
    padding: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__link,
  .page-faq .faq-rail__link,
  .page-faq .faq-item,
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after {
    transition: none;
  }
}