.page-faq {
  --faq-rail: 236px;
  --faq-gap: clamp(20px, 3.2vw, 44px);
  --faq-rule: rgba(30, 77, 54, .6);
  position: relative;
  padding-top: clamp(18px, 3vw, 30px);
  padding-bottom: clamp(48px, 8vw, 96px);
  color: var(--k8-body);
  background:
    radial-gradient(920px 540px at 88% -10%, rgba(57, 255, 136, .09), transparent 62%),
    radial-gradient(720px 520px at -12% 46%, rgba(255, 90, 54, .06), transparent 60%),
    var(--k8-night);
}

.page-faq h1,
.page-faq h2 {
  font-family: var(--k8-font-display);
  color: var(--k8-ink);
}

.page-faq a {
  color: inherit;
}

/* ---------- 面包屑 ---------- */

.page-faq .faq-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(18px, 3vw, 30px);
  font-size: .8rem;
  letter-spacing: .04em;
  color: var(--k8-mute);
}

.page-faq .faq-crumbs .k8-crumbs__item {
  color: var(--k8-mute);
  text-decoration: none;
}

.page-faq .faq-crumbs a.k8-crumbs__item:hover,
.page-faq .faq-crumbs a.k8-crumbs__item:focus-visible {
  color: var(--k8-neon);
}

.page-faq .faq-crumbs .k8-crumbs__item[aria-current="page"] {
  color: var(--k8-neon-soft);
}

.page-faq .faq-crumbs .k8-crumbs__sep {
  color: var(--k8-line);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(20px, 3.4vw, 40px);
  align-items: end;
}

.page-faq .faq-hero__eyebrow {
  margin: 0;
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--k8-mute);
}

.page-faq .faq-hero__eyebrow .k8-num {
  color: var(--k8-neon);
}

.page-faq .faq-hero__title {
  margin: 12px 0 16px;
  font-size: clamp(1.85rem, 5.4vw, 3.1rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: .01em;
}

.page-faq .faq-hero__lede {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(.94rem, 1.6vw, 1.02rem);
  line-height: 1.75;
  color: var(--k8-body);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__jump a {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--k8-line);
  border-radius: 999px;
  font-size: .82rem;
  color: var(--k8-neon-soft);
  text-decoration: none;
  transition: border-color .22s var(--k8-ease), color .22s var(--k8-ease), background-color .22s var(--k8-ease);
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  border-color: var(--k8-neon);
  background: rgba(57, 255, 136, .1);
  color: var(--k8-ink);
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--k8-line);
  border-radius: var(--k8-rad);
  overflow: hidden;
  background: var(--k8-deep);
  box-shadow: 0 22px 48px -32px rgba(0, 0, 0, .9);
}

.page-faq .faq-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(4, 17, 11, .1) 0%, rgba(4, 17, 11, .62) 100%);
  pointer-events: none;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ---------- 工作台骨架 ---------- */

.page-faq .faq-workbench {
  display: grid;
  gap: var(--faq-gap);
  margin-top: clamp(34px, 5.4vw, 60px);
  align-items: start;
}

.page-faq .faq-rail {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  padding: 18px 16px;
  border: 1px solid var(--k8-line);
  border-left: 3px solid var(--k8-amber);
  border-radius: var(--k8-rad);
  background: linear-gradient(180deg, var(--k8-panel) 0%, var(--k8-deep) 100%);
}

.page-faq .faq-rail__label {
  margin: 0;
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--k8-mute);
}

.page-faq .faq-rail__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-rail__chips .k8-chip {
  font-size: .82rem;
  line-height: 1.3;
  min-height: 38px;
  padding: 8px 13px;
}

.page-faq .faq-rail__hint {
  margin: 2px 0 0;
  font-size: .78rem;
  line-height: 1.6;
  color: var(--k8-mute);
}

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

/* ---------- 问答分组 ---------- */

.page-faq .faq-block {
  padding-top: clamp(22px, 3vw, 32px);
  margin-bottom: clamp(26px, 3.6vw, 44px);
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-block:first-child {
  padding-top: 0;
  border-top: none;
  margin-top: 0;
}

.page-faq .faq-block[hidden] {
  display: none;
}

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: baseline;
  margin-bottom: 10px;
}

.page-faq .faq-block__num {
  font-size: .82rem;
  letter-spacing: .1em;
  color: var(--k8-neon);
}

.page-faq .faq-block__title {
  margin: 0;
  font-size: clamp(1.16rem, 2.5vw, 1.52rem);
  font-weight: 800;
  letter-spacing: .01em;
  line-height: 1.25;
}

.page-faq .faq-block__note {
  grid-column: 2 / -1;
  margin: 0 0 4px;
  font-size: .84rem;
  line-height: 1.65;
  color: var(--k8-mute);
}

.page-faq .faq-block__items {
  border-top: 1px solid rgba(30, 77, 54, .34);
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-item {
  border-bottom: 1px solid rgba(30, 77, 54, .34);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 2px 15px 0;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  font-size: clamp(.94rem, 1.7vw, 1rem);
  line-height: 1.55;
  color: var(--k8-ink);
  transition: color .2s var(--k8-ease);
}

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

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

.page-faq .faq-item > summary::after {
  content: "";
  flex: 0 0 13px;
  width: 13px;
  height: 13px;
  margin-left: auto;
  margin-top: 6px;
  background:
    linear-gradient(var(--k8-neon), var(--k8-neon)) center / 13px 2px no-repeat,
    linear-gradient(var(--k8-neon), var(--k8-neon)) center / 2px 13px no-repeat;
  transition: opacity .2s var(--k8-ease);
}

.page-faq .faq-item[open] > summary::after {
  background: linear-gradient(var(--k8-neon), var(--k8-neon)) center / 13px 2px no-repeat;
}

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  color: var(--k8-neon-soft);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--k8-neon);
  outline-offset: 2px;
}

.page-faq .faq-item[open] > summary {
  color: var(--k8-neon-soft);
}

.page-faq .faq-item__body {
  padding: 0 clamp(16px, 4vw, 56px) 20px 0;
}

.page-faq .faq-item__body p {
  margin: 0 0 12px;
  font-size: .93rem;
  line-height: 1.8;
  color: var(--k8-body);
}

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

/* ---------- 联系客服 ---------- */

.page-faq .faq-support {
  position: relative;
  overflow: hidden;
  margin-top: clamp(36px, 5.6vw, 68px);
  border: 1px solid var(--k8-line);
  border-radius: var(--k8-rad);
  background: var(--k8-deep);
}

.page-faq .faq-support::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(118deg, rgba(4, 17, 11, .97) 0%, rgba(11, 36, 24, .9) 52%, rgba(4, 17, 11, .74) 100%);
  pointer-events: none;
}

.page-faq .faq-support__bg {
  position: absolute;
  inset: 0;
}

.page-faq .faq-support__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .42;
}

.page-faq .faq-support__body {
  position: relative;
  z-index: 2;
  padding: clamp(26px, 4.6vw, 52px);
  max-width: 72ch;
}

.page-faq .faq-support__eyebrow {
  margin: 0 0 10px;
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--k8-warn);
}

.page-faq .faq-support__title {
  margin: 0 0 14px;
  font-size: clamp(1.32rem, 3.2vw, 1.95rem);
  font-weight: 900;
  line-height: 1.2;
}

.page-faq .faq-support__lede {
  margin: 0 0 26px;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--k8-body);
}

.page-faq .faq-support__facts {
  display: grid;
  gap: 16px;
  margin: 0 0 28px;
  padding: 0;
}

.page-faq .faq-support__fact {
  padding-left: 14px;
  border-left: 2px solid var(--k8-line);
}

.page-faq .faq-support__fact dt {
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--k8-mute);
}

.page-faq .faq-support__fact dd {
  margin: 4px 0 0;
  font-size: .98rem;
  line-height: 1.6;
  color: var(--k8-ink);
  overflow-wrap: anywhere;
}

.page-faq .faq-support__fact dd.faq-support__fact-note {
  margin-top: 2px;
  font-size: .8rem;
  color: var(--k8-mute);
}

.page-faq .faq-support__cta {
  display: inline-block;
  text-decoration: none;
}

/* ---------- 回到顶部 ---------- */

.page-faq .faq-totop {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 20;
  display: inline-block;
  padding: 9px 15px;
  border: 1px solid var(--k8-line);
  border-radius: 999px;
  background: rgba(16, 47, 32, .92);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--k8-neon-soft);
  text-decoration: none;
  transition: border-color .22s var(--k8-ease), color .22s var(--k8-ease), background-color .22s var(--k8-ease);
}

.page-faq .faq-totop:hover,
.page-faq .faq-totop:focus-visible {
  border-color: var(--k8-neon);
  background: var(--k8-panel);
  color: var(--k8-ink);
}

.page-faq .faq-totop:focus-visible {
  outline: 2px solid var(--k8-neon);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-support__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-support__fact:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
  }

  .page-faq .faq-block__head {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 4px 18px;
  }

  .page-faq .faq-support__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-support__fact:last-child {
    grid-column: auto;
  }
}

@media (min-width: 940px) {
  .page-faq .faq-workbench {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 52px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 116px;
    padding: 20px 18px;
  }

  .page-faq .faq-rail__chips {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 6px;
  }

  .page-faq .faq-rail__chips .k8-chip {
    width: 100%;
    justify-content: flex-start;
    text-align: left;
  }
}

@media (max-width: 420px) {
  .page-faq .faq-hero__jump a {
    padding: 6px 12px;
    font-size: .78rem;
  }

  .page-faq .faq-item__body {
    padding-right: 8px;
  }

  .page-faq .faq-totop {
    padding: 8px 12px;
    font-size: .74rem;
  }
}