.page-faq {
  display: block;
  background: var(--space);
  color: var(--paper);
  overflow-x: clip;
}

.page-faq .faq-num {
  font-family: var(--font-mono);
  font-size: .95em;
  letter-spacing: .02em;
}

/* ---------- 通用区块头 ---------- */
.page-faq .faq-head {
  max-width: 60ch;
  margin: 0 0 clamp(24px, 3.4vw, 40px);
}

.page-faq .faq-head__idx {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .faq-head h2 {
  margin: 0 0 12px;
  color: var(--paper);
}

.page-faq .faq-head__note {
  margin: 0;
  color: var(--dust);
  font-size: var(--fs-14);
  line-height: 1.75;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(104px, 15vw, 176px) 0 clamp(40px, 6vw, 76px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(59, 42, 107, .9) 0%, rgba(11, 16, 38, 0) 62%),
    linear-gradient(180deg, var(--space) 0%, var(--ink) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(167, 176, 201, .3) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .6), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .6), transparent 76%);
  pointer-events: none;
}

.page-faq .faq-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumbs {
  margin-bottom: clamp(20px, 3vw, 34px);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
}

.page-faq .breadcrumbs a {
  color: var(--cyan);
  text-decoration: none;
}

.page-faq .breadcrumbs a:hover {
  color: var(--amber);
}

.page-faq .faq-hero__frame {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  padding: clamp(22px, 4vw, 48px);
  border: 1px solid var(--line-strong);
  background: linear-gradient(150deg, rgba(59, 42, 107, .52) 0%, rgba(6, 8, 20, .42) 100%);
}

.page-faq .faq-hero__frame::before,
.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 1px solid var(--cyan);
  pointer-events: none;
}

.page-faq .faq-hero__frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-faq .faq-hero__frame::after {
  right: -1px;
  bottom: -1px;
  border-top: 0;
  border-left: 0;
}

.page-faq .faq-hero .t-h1 {
  font-size: clamp(1.85rem, 6.2vw, 3.55rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-hero .t-eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--amber);
}

.page-faq .faq-hero .t-lede {
  margin: clamp(16px, 2vw, 22px) 0 0;
  max-width: 46ch;
  color: var(--dust);
  font-size: var(--fs-16);
  line-height: 1.8;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-hero__stat {
  padding: 16px 14px;
  background: rgba(6, 8, 20, .7);
}

.page-faq .faq-hero__stat dt {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--dust);
}

.page-faq .faq-hero__stat dd {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  font-weight: 700;
  line-height: 1;
  color: var(--paper);
}

.page-faq .faq-hero__stat-sm {
  font-size: var(--fs-20) !important;
  letter-spacing: -.01em;
}

.page-faq .faq-hero__fig {
  margin: clamp(28px, 4vw, 48px) 0 0;
}

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

/* ---------- 目录 ---------- */
.page-faq .faq-toc {
  padding: clamp(44px, 7vw, 96px) 0;
  background: var(--space);
  border-top: 1px solid var(--line);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-toc__list > li {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-toc__list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 18px 6px;
  color: var(--paper);
  text-decoration: none;
  transition: background .22s var(--ease), padding-left .22s var(--ease);
}

.page-faq .faq-toc__list a:hover {
  background: rgba(55, 230, 210, .07);
  padding-left: 14px;
}

.page-faq .faq-toc__idx {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--cyan);
}

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

.page-faq .faq-toc__title {
  display: block;
  font-size: var(--fs-16);
  font-weight: 600;
}

.page-faq .faq-toc__meta {
  display: block;
  margin-top: 5px;
  font-size: var(--fs-14);
  color: var(--dust);
}

.page-faq .faq-toc__arrow {
  font-family: var(--font-mono);
  color: var(--dust);
  transition: color .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-toc__list a:hover .faq-toc__arrow {
  color: var(--amber);
  transform: translateX(4px);
}

/* ---------- 高频问题（暖纸白） ---------- */
.page-faq .faq-hot {
  padding: clamp(44px, 7vw, 96px) 0;
  background: var(--paper);
  color: var(--paper-ink);
}

.page-faq .faq-hot .faq-head h2 {
  color: var(--paper-ink);
}

.page-faq .faq-hot .faq-head__idx {
  color: var(--volt-ink);
}

.page-faq .faq-hot .faq-head__note {
  color: rgba(20, 26, 46, .68);
}

.page-faq .faq-hot .tablist {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  margin-bottom: clamp(16px, 2vw, 26px);
  border-bottom: 1px solid var(--line-paper);
  scrollbar-width: none;
}

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

.page-faq .faq-hot .tab {
  flex: 0 0 auto;
  padding: 12px 14px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: rgba(20, 26, 46, .58);
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-hot .tab:hover {
  color: var(--paper-ink);
}

.page-faq .faq-hot .tab[aria-selected="true"] {
  color: var(--paper-ink);
  font-weight: 700;
  border-bottom-color: var(--amber);
}

.page-faq .faq-item {
  position: relative;
  padding-left: 14px;
  border-bottom: 1px solid var(--line-paper);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: var(--cyan);
  opacity: 0;
  transition: opacity .22s var(--ease);
}

.page-faq .faq-item[open]::before {
  opacity: 1;
}

.page-faq .faq-item > summary {
  position: relative;
  padding: 16px 34px 16px 12px;
  font-size: var(--fs-16);
  font-weight: 600;
  color: var(--paper-ink);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  color: var(--amber);
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
}

.page-faq .faq-item > p {
  margin: 0 0 18px;
  padding-left: 12px;
  max-width: 62ch;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(20, 26, 46, .78);
}

/* ---------- 数据节奏 ---------- */
.page-faq .faq-data {
  padding: clamp(44px, 7vw, 96px) 0;
  background: var(--space);
  border-top: 1px solid var(--line);
}

.page-faq .faq-data__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--space);
}

.page-faq .faq-card__code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .faq-card h3 {
  margin: 0;
  font-size: var(--fs-20);
  color: var(--paper);
}

.page-faq .faq-card p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--dust);
}

/* ---------- 客户端 ---------- */
.page-faq .faq-app {
  padding: clamp(44px, 7vw, 96px) 0;
  background: linear-gradient(180deg, var(--nebula) 0%, var(--space) 78%);
}

.page-faq .faq-app__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
}

.page-faq .faq-spec {
  margin: 0 0 24px;
  border-top: 1px solid var(--line-strong);
}

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

.page-faq .faq-spec dt {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--dust);
}

.page-faq .faq-spec dd {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--paper);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  counter-reset: faqstep;
}

.page-faq .faq-steps > li {
  position: relative;
  padding: 0 0 20px 34px;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--dust);
  counter-increment: faqstep;
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  width: 24px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--amber);
}

.page-faq .faq-steps > li::after {
  content: "";
  position: absolute;
  left: 11px;
  top: 22px;
  bottom: 4px;
  width: 1px;
  background: var(--line);
}

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

/* ---------- 跟队 ---------- */
.page-faq .faq-follow {
  padding: clamp(44px, 7vw, 96px) 0;
  background: var(--space);
}

.page-faq .faq-follow__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-follow__item {
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--space);
}

.page-faq .faq-follow__key {
  display: inline-block;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--amber);
}

.page-faq .faq-follow__item h3 {
  margin: 0 0 10px;
  font-size: var(--fs-20);
  color: var(--paper);
}

.page-faq .faq-follow__item p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--dust);
}

/* ---------- 纠错 ---------- */
.page-faq .faq-fix {
  padding: clamp(44px, 7vw, 96px) 0;
  background: linear-gradient(160deg, var(--nebula) 0%, var(--ink) 100%);
}

.page-faq .faq-fix__steps {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}

.page-faq .faq-fix__steps > li {
  padding: clamp(20px, 2.4vw, 26px);
  background: rgba(6, 8, 20, .74);
}

.page-faq .faq-fix__idx {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .faq-fix__steps h3 {
  margin: 0 0 10px;
  font-size: var(--fs-20);
  color: var(--paper);
}

.page-faq .faq-fix__steps p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--dust);
}

.page-faq .faq-fix__foot {
  margin: clamp(22px, 3vw, 30px) 0 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--dust);
}

.page-faq .faq-fix__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 230, 210, .4);
}

.page-faq .faq-fix__foot a:hover {
  color: var(--amber);
  border-bottom-color: rgba(255, 138, 61, .6);
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-support {
  padding: clamp(48px, 7vw, 104px) 0;
  background: var(--ink);
}

.page-faq .faq-support__panel {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  padding: clamp(24px, 4vw, 48px);
  border: 1px solid var(--line-strong);
  background: linear-gradient(140deg, rgba(59, 42, 107, .42), rgba(6, 8, 20, .9));
}

.page-faq .faq-support__panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 6px;
  background-image: repeating-linear-gradient(90deg, var(--line-strong) 0 1px, transparent 1px 16px);
  pointer-events: none;
}

.page-faq .faq-support__lede {
  margin: 0 0 8px;
  max-width: 46ch;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--dust);
}

.page-faq .faq-support__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-support__list .contact-line {
  display: grid;
  grid-template-columns: minmax(84px, auto) minmax(0, 1fr);
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-support__list .contact-line__key {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--dust);
}

.page-faq .faq-support__list .contact-line__val {
  font-size: var(--fs-14);
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-support__foot {
  margin: 22px 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--dust);
}

.page-faq .faq-support__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 230, 210, .4);
}

.page-faq .faq-support__foot a:hover {
  color: var(--amber);
  border-bottom-color: rgba(255, 138, 61, .6);
}

.page-faq .faq-support__figure {
  margin: 0;
}

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

.page-faq .faq-support__figure .figure__cap {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--dust);
}

/* ---------- 焦点可见 ---------- */
.page-faq a:focus-visible,
.page-faq .tab:focus-visible,
.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-data__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-follow__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 980px) {
  .page-faq .faq-hero__frame {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-faq .faq-app__layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-faq .faq-support__panel {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-data__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-follow__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc__list a,
  .page-faq .faq-toc__arrow,
  .page-faq .faq-item::before,
  .page-faq .faq-hot .tab {
    transition: none;
  }
}