.page-faq {
  --faq-rail: 264px;
  --faq-gap: clamp(20px, 3.2vw, 48px);
  --faq-item-bg: rgba(20, 24, 29, .74);
  --faq-item-bg-open: rgba(28, 35, 43, .92);
  --faq-body-text: rgba(242, 245, 247, .78);
  --faq-muted: rgba(242, 245, 247, .58);
}

.page-faq .faq-crumbs {
  padding: clamp(14px, 2.2vw, 24px) 0 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 3vw, 36px) 0 clamp(34px, 5.6vw, 70px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -8% -14% auto -6%;
  height: clamp(260px, 54vw, 560px);
  background:
    linear-gradient(116deg, rgba(255, 90, 42, .26) 0%, rgba(255, 90, 42, 0) 58%),
    linear-gradient(300deg, rgba(45, 226, 255, .15) 0%, rgba(45, 226, 255, 0) 54%);
  clip-path: polygon(0 0, 100% 0, 100% 58%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  align-items: start;
}

.page-faq .faq-hero h1 {
  margin: .55rem 0 0;
  font-family: var(--font-heading);
  font-size: clamp(29px, 5.4vw, 56px);
  line-height: 1.16;
  letter-spacing: .02em;
  color: var(--fog);
}

.page-faq .faq-hero h1 em {
  font-style: normal;
  color: var(--lava);
}

.page-faq .faq-hero-lead {
  margin: 1.1rem 0 0;
  max-width: 58ch;
  font-size: clamp(14.5px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--faq-body-text);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-hero-facts {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: clamp(16px, 2.4vw, 20px) 0 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(96px, 1fr));
  gap: 14px 18px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero-facts li {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--faq-muted);
}

.page-faq .faq-hero-facts b {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.4vw, 24px);
  letter-spacing: .02em;
  color: var(--ember);
}

.page-faq .faq-hero-figure {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line);
  background:
    linear-gradient(152deg, rgba(255, 90, 42, .16) 0%, rgba(11, 13, 16, .92) 62%);
  clip-path: var(--cut-lg);
}

.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  clip-path: var(--cut-md);
}

.page-faq .faq-hero-figure .media-caption {
  margin: 10px 2px 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--faq-muted);
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
    align-items: center;
  }

  .page-faq .faq-hero-figure {
    transform: translateY(clamp(-16px, -1.6vw, -6px));
  }
}

/* ---------- 热门问题 ---------- */
.page-faq .faq-hot-list {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-hot-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--fog);
  background: rgba(20, 24, 29, .8);
  border-left: 2px solid var(--line-lava);
  clip-path: var(--cut-sm);
  transition: background .2s ease, transform .2s ease, border-color .2s ease;
}

.page-faq .faq-hot-list a:hover,
.page-faq .faq-hot-list a:focus-visible {
  background: rgba(28, 35, 43, .96);
  border-left-color: var(--lava);
  transform: translateX(3px);
}

.page-faq .faq-hot-tag {
  flex: none;
  padding: 3px 7px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(45, 226, 255, .35);
}

@media (min-width: 760px) {
  .page-faq .faq-hot-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }
}

/* ---------- 主体：左目录 + 右问答 ---------- */
.page-faq .faq-body-grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-rail {
  padding: 18px 16px;
  background: rgba(20, 24, 29, .84);
  border: 1px solid var(--line-soft);
  clip-path: var(--cut-md);
}

.page-faq .faq-rail-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--metal);
}

.page-faq .faq-rail-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-rail-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  text-decoration: none;
  font-size: 14px;
  color: rgba(242, 245, 247, .74);
  border-left: 2px solid transparent;
  transition: color .18s ease, background .18s ease, border-color .18s ease;
}

.page-faq .faq-rail-list a:hover,
.page-faq .faq-rail-list a:focus-visible {
  color: var(--fog);
  background: rgba(255, 90, 42, .1);
  border-left-color: var(--lava);
}

.page-faq .faq-rail-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--metal);
}

.page-faq .faq-rail-note {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--faq-muted);
}

.page-faq .faq-rail-note p {
  margin: 0 0 6px;
}

.page-faq .faq-rail-note a {
  color: var(--ember);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 76, .4);
}

.page-faq .faq-rail-note a:hover {
  color: var(--lava);
}

@media (min-width: 960px) {
  .page-faq .faq-body-grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }
}

/* ---------- 问答组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 26px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(32px, 4.4vw, 52px);
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  align-items: baseline;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group-num {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 24px);
  line-height: 1;
  letter-spacing: .04em;
  color: var(--lava);
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(19px, 2.4vw, 24px);
  letter-spacing: .02em;
  color: var(--fog);
}

.page-faq .faq-group-desc {
  grid-column: 2;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--faq-muted);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  background: var(--faq-item-bg);
  border: 1px solid var(--line-soft);
  clip-path: var(--cut-sm);
  scroll-margin-top: calc(var(--header-h) + 26px);
  transition: background .2s ease, border-color .2s ease;
}

.page-faq .faq-item + .faq-item {
  margin-top: 10px;
}

.page-faq .faq-item[open] {
  background: var(--faq-item-bg-open);
  border-color: rgba(255, 90, 42, .34);
  box-shadow: inset 3px 0 0 var(--lava);
}

.page-faq .faq-item-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading);
  font-size: clamp(14.5px, 1.6vw, 16px);
  line-height: 1.5;
  letter-spacing: .01em;
  color: var(--fog);
}

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

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

.page-faq .faq-item-icon {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  border: 1px solid var(--line);
  transition: transform .25s ease, border-color .2s ease;
}

.page-faq .faq-item-icon::before,
.page-faq .faq-item-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--lava);
}

.page-faq .faq-item-icon::before {
  width: 10px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item-icon::after {
  width: 2px;
  height: 10px;
  transform: translate(-50%, -50%);
  transition: transform .25s ease, opacity .25s ease;
}

.page-faq .faq-item[open] .faq-item-icon {
  border-color: var(--lava);
  transform: rotate(180deg);
}

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

.page-faq .faq-item-body {
  padding: 0 16px 18px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-body-text);
}

.page-faq .faq-item-body p {
  margin: 0 0 10px;
}

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

.page-faq .faq-steps {
  list-style: none;
  margin: 12px 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  padding: 10px 12px;
  background: rgba(11, 13, 16, .62);
  border-left: 2px solid rgba(45, 226, 255, .45);
}

.page-faq .faq-step-code {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-faq .faq-step-text {
  font-size: 14px;
  line-height: 1.72;
  color: rgba(242, 245, 247, .82);
  overflow-wrap: anywhere;
}

.page-faq .faq-step-text b {
  color: var(--fog);
}

.page-faq .faq-item-more {
  margin-top: 12px;
  font-size: 13.5px;
}

.page-faq .faq-item-more a {
  color: var(--ember);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 76, .4);
  padding-bottom: 1px;
  transition: color .18s ease, border-color .18s ease;
}

.page-faq .faq-item-more a:hover,
.page-faq .faq-item-more a:focus-visible {
  color: var(--lava);
  border-bottom-color: var(--lava);
}

/* ---------- 客服衔接 ---------- */
.page-faq .faq-support-card {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  padding: clamp(20px, 3.4vw, 38px);
  background:
    linear-gradient(140deg, rgba(255, 90, 42, .13) 0%, rgba(20, 24, 29, .95) 58%);
  border: 1px solid var(--line-lava);
  clip-path: var(--cut-lg);
}

.page-faq .faq-support-title {
  margin: 0 0 10px;
  font-family: var(--font-heading);
  font-size: clamp(18px, 2.3vw, 22px);
  letter-spacing: .02em;
  color: var(--fog);
}

.page-faq .faq-support-copy > p {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-body-text);
}

.page-faq .faq-contact-list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-contact-list li {
  display: grid;
  gap: 2px;
  padding-left: 12px;
  border-left: 2px solid var(--line);
}

.page-faq .faq-contact-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--metal);
}

.page-faq .faq-contact-value {
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--fog);
  overflow-wrap: anywhere;
}

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

.page-faq .faq-support-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border: 1px solid var(--line-soft);
  clip-path: var(--cut-md);
}

.page-faq .faq-support-figure .media-caption {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  line-height: 1.6;
  color: var(--faq-muted);
}

@media (min-width: 880px) {
  .page-faq .faq-support-card {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hot-list a,
  .page-faq .faq-rail-list a,
  .page-faq .faq-item,
  .page-faq .faq-item-icon,
  .page-faq .faq-item-icon::after,
  .page-faq .faq-item-more a {
    transition: none;
  }

  .page-faq .faq-hot-list a:hover,
  .page-faq .faq-hot-list a:focus-visible {
    transform: none;
  }
}