.page-faq {
  --faq-violet: #9B7BFF;
  --faq-edge: 3px;
  position: relative;
  padding-bottom: clamp(48px, 7vw, 110px);
  background:
    radial-gradient(880px 400px at 84% -8%, rgba(63, 224, 255, .10), transparent 62%),
    radial-gradient(620px 320px at 6% 22%, rgba(245, 185, 66, .06), transparent 66%),
    var(--ink-900);
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  border-bottom: var(--faq-edge) solid var(--line-blue);
  padding: clamp(26px, 4vw, 50px) 0 clamp(28px, 4vw, 52px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.2vw, 40px);
}

.page-faq .faq-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq h1 {
  margin: 0;
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 5.2vw, 56px);
  line-height: 1.08;
  letter-spacing: .005em;
  color: var(--paper);
}

.page-faq h1::after {
  content: "";
  display: block;
  width: 78px;
  height: 5px;
  margin-top: 20px;
  background: var(--gold);
}

.page-faq .faq-lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-hero__panel {
  align-self: end;
  border: var(--faq-edge) solid var(--line-blue);
  border-left: 6px solid var(--gold);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
  padding: 18px 20px 20px;
}

.page-faq .faq-hero__panel-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--muted);
}

.page-faq .faq-hero__rows {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-hero__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line-blue);
}

.page-faq .faq-hero__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-hero__val {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: .02em;
  color: var(--gold);
  white-space: nowrap;
}

.page-faq .faq-hero__key {
  font-size: 13px;
  color: var(--muted);
  text-align: right;
}

.page-faq .faq-quickline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: clamp(22px, 2.8vw, 34px);
  padding: 16px 18px;
  border: 2px solid var(--line-blue);
  border-left: 6px solid var(--cyan);
  background: linear-gradient(90deg, rgba(63, 224, 255, .10), rgba(5, 10, 22, 0) 72%), var(--ink-800);
}

.page-faq .faq-quickline__text {
  margin: 0;
  max-width: 68ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-quickline__text strong {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-faq .faq-quickline__btn {
  flex: none;
}

/* ============ 主体布局 ============ */
.page-faq .faq-body {
  padding-top: clamp(28px, 4vw, 54px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 38px);
}

.page-faq .faq-index {
  border: var(--faq-edge) solid var(--line-blue);
  background: var(--ink-800);
  padding: 16px 15px 14px;
}

.page-faq .faq-index__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  gap: 6px;
}

.page-faq .faq-index__item {
  --faq-accent: var(--line-blue);
  min-width: 0;
}

.page-faq .faq-index__item--a { --faq-accent: var(--cyan); }
.page-faq .faq-index__item--b { --faq-accent: var(--mint); }
.page-faq .faq-index__item--c { --faq-accent: var(--gold); }
.page-faq .faq-index__item--d { --faq-accent: var(--signal); }
.page-faq .faq-index__item--e { --faq-accent: var(--faq-violet); }

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border: 2px solid transparent;
  border-left: 5px solid var(--faq-accent);
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  transition: background .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: rgba(63, 224, 255, .12);
  border-color: var(--cyan);
  transform: translateX(2px);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--faq-accent);
}

.page-faq .faq-index__name {
  min-width: 0;
}

/* ============ 问答流 ============ */
.page-faq .faq-flow {
  display: grid;
  gap: clamp(20px, 2.6vw, 32px);
  min-width: 0;
}

.page-faq .faq-group {
  --faq-accent: var(--cyan);
  --faq-surface: #0A1526;
  position: relative;
  border: var(--faq-edge) solid var(--line-blue);
  border-top: 7px solid var(--faq-accent);
  background: var(--faq-surface);
  padding: clamp(20px, 2.6vw, 32px);
  scroll-margin-top: 98px;
}

.page-faq .faq-group--b {
  --faq-accent: var(--mint);
  --faq-surface: #07191E;
}

.page-faq .faq-group--c {
  --faq-accent: var(--gold);
  --faq-surface: #121428;
}

.page-faq .faq-group--d {
  --faq-accent: var(--signal);
  --faq-surface: #1A0D1D;
}

.page-faq .faq-group--e {
  --faq-accent: var(--faq-violet);
  --faq-surface: #0C1526;
}

.page-faq .faq-group__head {
  display: grid;
  gap: 8px;
  margin-bottom: clamp(18px, 2.4vw, 26px);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-blue);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--faq-accent);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.1vw, 31px);
  line-height: 1.18;
  color: var(--paper);
}

.page-faq .faq-group__scene {
  margin: 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ============ 分步指引 ============ */
.page-faq .faq-steps {
  margin: 0 0 clamp(20px, 2.6vw, 30px);
}

.page-faq .faq-steps__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.5vw, 19px);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-faq .faq-steps__list {
  list-style: none;
  counter-reset: faqstep;
  margin: 0;
  padding: 0;
}

.page-faq .faq-steps__list > li {
  counter-increment: faqstep;
  position: relative;
  padding: 0 0 22px 50px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-steps__list > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  box-sizing: border-box;
  border: 2px solid var(--cyan);
  background: rgba(63, 224, 255, .14);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .faq-steps__list > li::after {
  content: "";
  position: absolute;
  left: 15px;
  top: 38px;
  bottom: 2px;
  width: 2px;
  background: linear-gradient(180deg, rgba(63, 224, 255, .8), rgba(63, 224, 255, .08));
}

.page-faq .faq-steps__list > li:last-child {
  padding-bottom: 0;
}

.page-faq .faq-steps__list > li:last-child::after {
  display: none;
}

/* ============ 图注 ============ */
.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 2.6vw, 30px);
  border: 2px solid var(--line-blue);
  background: rgba(5, 10, 22, .6);
}

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

.page-faq .faq-figure .media-caption {
  padding: 12px 14px;
  border-top: 2px solid var(--line-blue);
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* ============ 折叠问答 ============ */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  border: 2px solid var(--line-blue);
  background: rgba(5, 10, 22, .5);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--faq-accent);
  box-shadow: 3px 3px 0 rgba(5, 10, 22, .9);
}

.page-faq .faq-item[open] {
  border-color: var(--faq-accent);
  box-shadow: 3px 3px 0 rgba(5, 10, 22, .9);
}

.page-faq .faq-item__q {
  position: sticky;
  top: 88px;
  z-index: 2;
  display: block;
  padding: 15px 48px 15px 16px;
  background: var(--faq-surface);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
  transition: color .2s var(--ease);
}

.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 14px;
  top: 15px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  line-height: 1;
  color: var(--faq-accent);
  transition: transform .2s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "\2212";
  transform: rotate(180deg);
}

.page-faq .faq-item__q:hover {
  color: var(--faq-accent);
}

.page-faq .faq-item__body {
  padding: 14px 18px 18px;
  border-top: 1px dashed var(--line-blue);
  font-size: 15px;
  line-height: 1.82;
  color: var(--muted);
}

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

.page-faq .faq-item__body a {
  color: var(--cyan);
  text-underline-offset: 3px;
}

/* ============ 兜底联系 ============ */
.page-faq .faq-rescue {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
  border: var(--faq-edge) solid var(--line-blue);
  border-top: 7px solid var(--gold);
  background: linear-gradient(135deg, rgba(245, 185, 66, .13), rgba(5, 10, 22, .92) 62%), var(--ink-800);
  padding: clamp(22px, 3.2vw, 38px);
}

.page-faq .faq-rescue__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .faq-rescue__text {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-rescue__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-rescue__contacts {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 18px;
  border: 2px solid var(--line-blue);
  background: rgba(5, 10, 22, .55);
}

.page-faq .faq-rescue__contacts .contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-blue);
}

.page-faq .faq-rescue__contacts .contact-row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-rescue__contacts .contact-key {
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-rescue__contacts .contact-val {
  font-size: 14px;
  font-weight: 700;
  color: var(--paper);
  text-align: right;
  word-break: break-word;
}

.page-faq .faq-rescue__contacts .contact-val--mono {
  font-family: var(--font-mono);
  letter-spacing: .01em;
  color: var(--gold);
}

/* ============ 焦点反馈 ============ */
.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-faq .faq-hero__rows {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-hero__row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding-bottom: 0;
    padding-right: 16px;
    border-bottom: 0;
    border-right: 1px dashed var(--line-blue);
  }

  .page-faq .faq-hero__row:last-child {
    padding-right: 0;
    border-right: 0;
  }

  .page-faq .faq-hero__key {
    text-align: left;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, .78fr);
    align-items: end;
  }

  .page-faq .faq-rescue {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 268px minmax(0, 1fr);
    gap: clamp(30px, 3.6vw, 54px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 92px;
  }

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

  .page-faq .faq-group {
    padding: clamp(24px, 2.4vw, 34px) clamp(24px, 2.6vw, 38px);
  }
}

@media (max-width: 520px) {
  .page-faq .faq-quickline__btn {
    width: 100%;
    text-align: center;
  }

  .page-faq .faq-item__q {
    top: 74px;
    font-size: 14.5px;
  }

  .page-faq .faq-rescue__actions .btn {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}