.page-faq {
  --faq-soft: rgba(22, 24, 29, .72);
  --faq-hair: rgba(22, 24, 29, .12);
  background: var(--space);
  color: var(--paper);
}

/* ---------- 页头 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-radius: 0 0 var(--r-xl) var(--r-xl);
  padding: clamp(26px, 4vw, 40px) 0 clamp(46px, 8vw, 90px);
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center 42%;
}

.page-faq .faq-hero__veil {
  position: absolute;
  inset: 0;
  background: rgba(11, 18, 48, .68);
}

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

.page-faq .crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(38px, 9vw, 96px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted-dark);
}

.page-faq .crumb a,
.page-faq .crumb__here {
  color: inherit;
  text-decoration: none;
}

.page-faq .crumb a {
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .crumb a:hover,
.page-faq .crumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .crumb__sep {
  color: var(--muted-2);
}

.page-faq .crumb__here {
  color: var(--gold);
}

.page-faq .faq-hero__kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-faq .faq-hero__idx {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border: 1px solid var(--line-dark);
  border-radius: var(--pill);
  color: var(--gold);
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(29px, 6.4vw, 58px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: rgba(243, 237, 226, .78);
}

.page-faq .faq-hero__jump {
  display: flex;
  gap: 10px;
  margin: clamp(28px, 5vw, 46px) 0 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-hero__jump li {
  flex: 0 0 auto;
}

.page-faq .faq-hero__jump a {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 16px;
  border: 1px solid var(--line-dark);
  border-radius: var(--pill);
  font-size: 14px;
  color: var(--paper);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(47, 227, 208, .08);
}

/* ---------- 通用小标题 ---------- */
.page-faq .faq-sec-head {
  max-width: 62ch;
}

.page-faq .faq-h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 36px);
  line-height: 1.22;
  letter-spacing: -.005em;
  color: var(--paper);
}

.page-faq .faq-h2__lead {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--muted-dark);
}

/* ---------- 三步上手 ---------- */
.page-faq .faq-steps {
  padding: clamp(48px, 8vw, 86px) 0 clamp(20px, 3vw, 32px);
}

.page-faq .faq-steps__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  padding: 24px 22px 26px;
  border-radius: var(--r-lg);
  background: var(--night);
  box-shadow: inset 0 0 0 1px var(--line-dark-2), 0 20px 44px -30px rgba(0, 0, 0, .95);
}

.page-faq .faq-step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--signal);
}

.page-faq .faq-step__title {
  margin: 14px 0 0;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-step__text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted-dark);
}

.page-faq .faq-steps__figure {
  margin: clamp(26px, 4vw, 40px) 0 0;
}

.page-faq .faq-steps__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  object-fit: cover;
}

/* ---------- 问题手册 ---------- */
.page-faq .faq-manual {
  padding: clamp(24px, 4vw, 44px) 0 clamp(48px, 7vw, 84px);
}

.page-faq .faq-manual__paper {
  background: var(--paper);
  color: var(--ink);
  border-radius: var(--r-xl);
  padding: clamp(22px, 4vw, 50px) clamp(16px, 3.4vw, 46px) clamp(26px, 4vw, 52px);
}

.page-faq .faq-manual__head {
  max-width: 64ch;
}

.page-faq .faq-manual__paper .faq-h2 {
  color: var(--ink);
}

.page-faq .faq-manual__paper .faq-h2__lead {
  color: var(--faq-soft);
}

.page-faq .faq-manual__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin: clamp(24px, 4vw, 42px) 0 0;
}

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

.page-faq .faq-index__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: rgba(22, 24, 29, .48);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 15px;
  border: 1px solid var(--line-paper);
  border-radius: var(--pill);
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
  background: rgba(255, 106, 43, .06);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(22, 24, 29, .45);
}

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

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(30px, 5vw, 50px);
  padding-top: clamp(30px, 5vw, 50px);
  border-top: 2px solid var(--ink);
}

.page-faq .faq-group__head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--camellia);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--ink);
}

.page-faq .faq-group__note {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--faq-soft);
}

.page-faq .faq-list {
  margin: 16px 0 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-q {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 6px 18px 20px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-q::marker {
  content: "";
}

.page-faq .faq-q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 3px;
  border-radius: var(--pill);
  background: var(--paper-grey);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-q::before {
  background: var(--cyan);
}

.page-faq .faq-item[open] .faq-q,
.page-faq .faq-q:hover,
.page-faq .faq-q:focus-visible {
  color: var(--signal);
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

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

.page-faq .faq-q .tag {
  flex: 0 0 auto;
  align-self: center;
  font-size: 12px;
}

.page-faq .faq-q__marker {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 5px;
  margin-left: 8px;
}

.page-faq .faq-q__marker::before,
.page-faq .faq-q__marker::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--ink);
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-q__marker::before {
  width: 12px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-q__marker::after {
  width: 2px;
  height: 12px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item[open] .faq-q__marker::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .faq-item[open] .faq-q__marker::before,
.page-faq .faq-item[open] .faq-q__marker::after {
  background: var(--signal);
}

.page-faq .faq-a {
  max-width: 68ch;
  padding: 0 24px 22px 20px;
}

.page-faq .faq-a p {
  margin: 0;
  font-size: 15.5px;
  font-weight: 400;
  line-height: 1.85;
  color: var(--faq-soft);
}

.page-faq .faq-a a {
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--signal);
  transition: color var(--dur) var(--ease);
}

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

/* ---------- 人工支持 ---------- */
.page-faq .faq-help {
  padding: 0 0 clamp(54px, 9vw, 100px);
}

.page-faq .faq-help__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding: clamp(24px, 4vw, 48px);
  border-radius: var(--r-xl);
  background: var(--night);
  box-shadow: inset 0 0 0 1px var(--line-dark-2), 0 24px 60px -40px rgba(0, 0, 0, .95);
}

.page-faq .faq-help__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-faq .faq-help__title {
  margin: 0;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  line-height: 1.28;
  color: var(--paper);
}

.page-faq .faq-help__text {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--muted-dark);
}

.page-faq .faq-help__text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 208, .45);
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-help__text a:hover,
.page-faq .faq-help__text a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-help__channels {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-dark-2);
}

.page-faq .faq-help__row {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-dark-2);
}

.page-faq .faq-help__row dt {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-faq .faq-help__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
  overflow-wrap: anywhere;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-help__row {
    grid-template-columns: 104px minmax(0, 1fr);
  }
}

@media (min-width: 860px) {
  .page-faq .faq-help__panel {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 48px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-manual__layout {
    grid-template-columns: 262px minmax(0, 1fr);
    gap: 52px;
  }

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

  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-index__list li {
    flex: none;
  }

  .page-faq .faq-index__list li + li {
    margin-top: 6px;
  }

  .page-faq .faq-index__link {
    display: flex;
    height: auto;
    padding: 10px 12px 10px 14px;
    border: 0;
    border-left: 3px solid var(--paper-grey);
    border-radius: 0 var(--r-md) var(--r-md) 0;
    font-weight: 600;
    line-height: 1.55;
    white-space: normal;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--signal);
    background: rgba(255, 106, 43, .07);
  }

  .page-faq .faq-q {
    padding-right: 12px;
  }
}

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