.page-faq {
  --faq-cut: 16px;
  --faq-line: rgba(22, 36, 74, .92);
  --faq-panel: rgba(13, 23, 48, .68);
  --faq-cyan-soft: rgba(127, 233, 255, .08);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 6vw, 62px) 0 clamp(30px, 5vw, 52px);
  isolation: isolate;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -25% -15% auto -15%;
  height: 155%;
  background:
    radial-gradient(58% 48% at 10% 6%, rgba(127, 233, 255, .16), rgba(6, 11, 24, 0) 72%),
    radial-gradient(48% 44% at 92% 0%, rgba(255, 199, 102, .11), rgba(6, 11, 24, 0) 74%),
    linear-gradient(114deg, rgba(6, 11, 24, 0) 40%, rgba(127, 233, 255, .07) 50%, rgba(6, 11, 24, 0) 60%);
  pointer-events: none;
  z-index: -2;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(234, 242, 255, .045) 1px, rgba(0, 0, 0, 0) 1px),
    linear-gradient(90deg, rgba(234, 242, 255, .045) 1px, rgba(0, 0, 0, 0) 1px);
  background-size: 24px 24px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), rgba(0, 0, 0, 0) 86%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), rgba(0, 0, 0, 0) 86%);
  pointer-events: none;
  z-index: -1;
}

.page-faq .faq-hero__inner {
  position: relative;
}

.page-faq .faq-hero .breadcrumb {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 20px;
}

.page-faq .faq-hero .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid rgba(138, 151, 184, .35);
  padding-bottom: 1px;
}

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

.page-faq .faq-hero .breadcrumb__sep {
  margin: 0 8px;
  color: var(--ink-700);
}

.page-faq .faq-hero .eyebrow {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--cyan);
  margin: 0;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(32px, 5.4vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--paper);
  max-width: 19ch;
}

.page-faq .faq-hero .lead {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--soft);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 22px 0 0;
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--muted);
}

.page-faq .faq-hero__meta .mono {
  position: relative;
  padding-left: 14px;
}

.page-faq .faq-hero__meta .mono::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 5px;
  height: 5px;
  margin-top: -2.5px;
  border-radius: 50%;
  background: var(--gold);
  opacity: .8;
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 28px;
}

.page-faq .faq-jump__link {
  text-decoration: none;
  white-space: nowrap;
}

/* ---------- 主体 ---------- */
.page-faq .faq-body {
  padding: clamp(26px, 5vw, 52px) 0 clamp(56px, 9vw, 110px);
}

.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--faq-line);
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-faq .faq-chip {
  appearance: none;
  -webkit-appearance: none;
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1;
  padding: 10px 16px;
  color: var(--soft);
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  cursor: pointer;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
  clip-path: polygon(var(--faq-cut) 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%, 0 var(--faq-cut));
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  color: var(--paper);
  border-color: rgba(127, 233, 255, .55);
  background: var(--ink-700);
  outline: none;
}

.page-faq .faq-chip[aria-pressed="true"] {
  color: #061019;
  font-weight: 600;
  border-color: transparent;
  background: linear-gradient(120deg, var(--cyan) 0%, #b6f2ff 45%, var(--gold) 100%);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

/* ---------- 左栏索引 ---------- */
.page-faq .faq-index {
  min-width: 0;
}

.page-faq .faq-index__inner {
  padding: 20px 18px 22px;
  background: linear-gradient(180deg, rgba(13, 23, 48, .82), rgba(6, 11, 24, .35));
  border-left: 2px solid rgba(127, 233, 255, .3);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-index__label {
  margin: 0 0 4px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .07em;
  color: var(--muted);
}

.page-faq .faq-index__group {
  margin: 20px 0 8px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
}

.page-faq .faq-index__list a {
  display: grid;
  grid-template-columns: 2.2em minmax(0, 1fr);
  gap: 6px;
  align-items: baseline;
  padding: 6px 8px 6px 6px;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--soft);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--paper);
  background: var(--faq-cyan-soft);
  border-left-color: var(--cyan);
  outline: none;
}

.page-faq .faq-index__num {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  color: var(--muted);
}

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

/* ---------- 右栏问题集 ---------- */
.page-faq .faq-sets {
  min-width: 0;
}

.page-faq .faq-set {
  scroll-margin-top: 140px;
}

.page-faq .faq-set + .faq-set {
  margin-top: clamp(46px, 6vw, 76px);
}

.page-faq .faq-set__head {
  display: grid;
  grid-template-columns: 2.6em minmax(0, 1fr);
  column-gap: 14px;
  padding-bottom: 16px;
}

.page-faq .faq-set__num {
  grid-column: 1;
  grid-row: 1;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--cyan);
  padding-top: 6px;
}

.page-faq .faq-set__title {
  grid-column: 2;
  margin: 0;
  font-size: clamp(22px, 3vw, 28px);
  line-height: 1.3;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--paper);
}

.page-faq .faq-set__intro {
  grid-column: 2;
  margin: 10px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--soft);
}

.page-faq .faq-figure {
  margin: 20px 0 26px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--ink-700);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-figure .media__caption {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-top: 1px solid var(--faq-line);
  scroll-margin-top: 150px;
}

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-item__head {
  display: grid;
  grid-template-columns: 2.6em minmax(0, 1fr) 20px;
  column-gap: 14px;
  align-items: start;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__head:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: 4px;
}

.page-faq .faq-item__num {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--muted);
  padding-top: 5px;
  transition: color .18s var(--ease);
}

.page-faq .faq-item__title {
  font-size: 16.5px;
  line-height: 1.65;
  font-weight: 600;
  color: var(--paper);
  transition: color .18s var(--ease);
}

.page-faq .faq-item__head:hover .faq-item__title {
  color: var(--cyan);
}

.page-faq .faq-item__icon {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 5px;
  justify-self: end;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}

.page-faq .faq-item__icon::before {
  left: 2px;
  right: 2px;
  top: 9px;
  height: 1.5px;
}

.page-faq .faq-item__icon::after {
  top: 2px;
  bottom: 2px;
  left: 9px;
  width: 1.5px;
}

.page-faq .faq-item[open] .faq-item__num {
  color: var(--gold);
}

.page-faq .faq-item[open] .faq-item__title {
  color: #ffffff;
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__body {
  margin-left: calc(2.6em + 14px);
  padding: 0 0 22px 22px;
  border-left: 1px solid transparent;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--soft);
}

.page-faq .faq-item[open] .faq-item__body {
  border-left-color: rgba(127, 233, 255, .45);
}

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

.page-faq .faq-item__body p + .faq-tip {
  margin-top: 14px;
}

.page-faq .faq-tip {
  margin: 0;
  padding: 12px 16px;
  background: linear-gradient(120deg, rgba(255, 199, 102, .13), rgba(127, 233, 255, .06));
  border-left: 2px solid var(--gold);
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

/* ---------- 三步路径条 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 2.4em minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  background: var(--faq-panel);
  border-left: 2px solid rgba(127, 233, 255, .42);
  font-size: 15px;
  color: var(--paper);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.page-faq .faq-steps__num {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--cyan);
}

/* ---------- 底部求助 ---------- */
.page-faq .faq-help {
  padding: clamp(40px, 6vw, 76px) 0 clamp(56px, 8vw, 96px);
  background: linear-gradient(180deg, rgba(13, 23, 48, .55), rgba(6, 11, 24, 0));
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-help__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: center;
}

.page-faq .faq-help__text h2 {
  margin: 0;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.3;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--paper);
}

.page-faq .faq-help__text p {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--soft);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-help__link {
  text-decoration: none;
  white-space: nowrap;
}

/* ---------- 平板起 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 10px;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
  }

  .page-faq .faq-steps li {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    align-items: start;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 40px;
  }

  .page-faq .faq-help__actions {
    justify-content: flex-end;
  }
}

/* ---------- 桌面双栏 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(242px, 296px) minmax(0, 1fr);
    column-gap: clamp(40px, 5vw, 64px);
    align-items: start;
  }

  .page-faq .faq-index__inner {
    position: sticky;
    top: 132px;
  }

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

  .page-faq .faq-item__title {
    font-size: 17px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-set__intro {
    max-width: 66ch;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__icon::before,
  .page-faq .faq-item__icon::after,
  .page-faq .faq-index__list a,
  .page-faq .faq-chip,
  .page-faq .faq-item__num,
  .page-faq .faq-item__title {
    transition: none;
  }
}