.page-faq {
  --faq-gap: clamp(12px, 2vw, 18px);
  --faq-shadow: 6px 6px 0 rgba(3, 11, 20, .68);
  --faq-shadow-sm: 4px 4px 0 rgba(3, 11, 20, .6);
  --faq-tint: rgba(110, 208, 246, .07);
  display: block;
  background: var(--navy);
  color: var(--text);
  overflow-x: clip;
}

.page-faq .shell {
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(18px, 3.5vw, 34px) 0 clamp(30px, 5vw, 58px);
  border-bottom: 2px solid var(--line);
  background:
    radial-gradient(95% 120% at 88% -12%, rgba(110, 208, 246, .18), transparent 62%),
    radial-gradient(75% 95% at 2% 108%, rgba(232, 180, 74, .12), transparent 66%),
    linear-gradient(180deg, var(--ink), var(--navy) 72%);
}

.page-faq .faq-hero .breadcrumbs {
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3.4vw, 38px);
  align-items: center;
}

.page-faq .faq-hero-copy h1 {
  margin: 10px 0 0;
  max-width: 17ch;
  font-size: clamp(1.9rem, 5.4vw, 3.35rem);
  line-height: 1.14;
  letter-spacing: -.012em;
  font-weight: 900;
  color: var(--white);
}

.page-faq .faq-lede {
  margin: 16px 0 0;
  max-width: 54ch;
  font-size: clamp(1rem, 1.25vw, 1.0625rem);
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
}

.page-faq .faq-chip {
  display: inline-block;
  padding: 5px 12px;
  border: 2px solid var(--line);
  background: rgba(30, 75, 110, .3);
  color: var(--ice);
  font-size: .72rem;
  letter-spacing: .08em;
  white-space: nowrap;
}

.page-faq .faq-hero-figure {
  margin: 0;
  border: 2px solid var(--line);
  background: var(--panel-2);
  box-shadow: var(--faq-shadow);
  overflow: hidden;
}

.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 分类跳转 ---------- */

.page-faq .faq-jump {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(152px, 1fr));
  gap: 10px;
}

.page-faq .faq-jump a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 13px 15px;
  border: 2px solid var(--line);
  background: linear-gradient(160deg, rgba(110, 208, 246, .06), transparent 60%), var(--panel-2);
  box-shadow: var(--faq-shadow-sm);
  color: var(--text);
  text-decoration: none;
  font-size: .9375rem;
  font-weight: 700;
  transition: border-color .2s var(--ease), color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--gold);
  color: var(--gold-soft);
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 rgba(3, 11, 20, .72);
}

.page-faq .jump-no {
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--gold);
}

/* ---------- 问题分组 ---------- */

.page-faq .faq-group {
  padding: clamp(38px, 6vw, 76px) 0;
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-group--tint {
  background:
    linear-gradient(180deg, rgba(14, 42, 69, .55), rgba(7, 26, 43, .95)),
    var(--navy);
}

.page-faq .faq-head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-head h2 {
  margin: 8px 0 0;
  font-size: clamp(1.45rem, 3.1vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  font-weight: 900;
  color: var(--white);
  max-width: 22ch;
}

.page-faq .faq-head-note {
  margin: 10px 0 0;
  max-width: 48ch;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-list {
  display: grid;
  gap: var(--faq-gap);
  max-width: 940px;
}

/* ---------- 折叠问答 ---------- */

.page-faq .qa {
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--faq-shadow);
  transition: border-color .22s var(--ease), background-color .22s var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--gold);
  background: linear-gradient(180deg, rgba(232, 180, 74, .07), transparent 42%), var(--panel);
}

.page-faq .qa-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: clamp(15px, 2.2vw, 20px) clamp(16px, 2.4vw, 22px);
  cursor: pointer;
  list-style: none;
  font-size: clamp(.98rem, 1.5vw, 1.1rem);
  font-weight: 800;
  line-height: 1.55;
  color: var(--white);
}

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

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

.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: -4px;
}

.page-faq .qa-no {
  flex: 0 0 auto;
  margin-top: 2px;
  padding: 2px 7px;
  border: 1px solid var(--line);
  background: rgba(30, 75, 110, .34);
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--ice);
}

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

.page-faq .qa-sign {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 5px;
  margin-left: 4px;
}

.page-faq .qa-sign::before,
.page-faq .qa-sign::after {
  content: "";
  position: absolute;
  background: var(--gold);
}

.page-faq .qa-sign::before {
  left: 0;
  right: 0;
  top: 8px;
  height: 2px;
}

.page-faq .qa-sign::after {
  top: 0;
  bottom: 0;
  left: 8px;
  width: 2px;
  transition: transform .24s var(--ease), opacity .24s var(--ease);
}

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

.page-faq .qa-a {
  padding: 0 clamp(16px, 2.4vw, 22px) clamp(16px, 2.4vw, 22px);
  max-width: 72ch;
}

.page-faq .qa[open] .qa-a {
  border-top: 2px solid var(--line);
  padding-top: clamp(13px, 2vw, 18px);
}

.page-faq .qa-a p {
  margin: 0;
  font-size: .9688rem;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .qa-a p + p {
  margin-top: 10px;
}

.page-faq .qa-a a {
  color: var(--ice);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

/* ---------- 下载与投屏 ---------- */

.page-faq .download-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 32px);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-faq .faq-figure {
  margin: 0;
  border: 2px solid var(--line);
  background: var(--ink);
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  border-top: 2px solid var(--line);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-faq .steps-title {
  margin: 0 0 14px;
  font-size: clamp(1.1rem, 1.9vw, 1.3rem);
  font-weight: 900;
  color: var(--gold-soft);
  letter-spacing: -.005em;
}

.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: clamp(15px, 2.2vw, 20px);
  border: 2px solid var(--line);
  background: linear-gradient(135deg, rgba(110, 208, 246, .09), transparent 58%), var(--panel);
  box-shadow: var(--faq-shadow-sm);
}

.page-faq .step-no {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 2px solid var(--gold);
  background: rgba(232, 180, 74, .1);
  color: var(--gold);
  font-size: .875rem;
  letter-spacing: .06em;
}

.page-faq .step-body {
  min-width: 0;
}

.page-faq .step-body h4 {
  margin: 4px 0 6px;
  font-size: 1.0313rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1.4;
}

.page-faq .step-body p {
  margin: 0;
  max-width: 62ch;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--text);
}

/* ---------- 数据带 ---------- */

.page-faq .faq-band {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 20px;
  margin-top: clamp(22px, 3.5vw, 34px);
  padding: clamp(16px, 2.4vw, 22px) clamp(16px, 2.6vw, 24px);
  border: 2px solid var(--line);
  border-left: 6px solid var(--gold);
  background: linear-gradient(90deg, rgba(232, 180, 74, .12), transparent 72%), var(--panel-2);
}

.page-faq .faq-band-value {
  font-size: clamp(1.65rem, 4vw, 2.5rem);
  line-height: 1;
  color: var(--gold);
  letter-spacing: -.01em;
}

.page-faq .faq-band-label {
  flex: 1 1 220px;
  font-size: .9688rem;
  line-height: 1.6;
  color: var(--text);
}

.page-faq .faq-band-meta {
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--ice);
}

/* ---------- 联系 ---------- */

.page-faq .support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 30px);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-faq .support-copy {
  padding: clamp(18px, 2.8vw, 26px);
  border: 2px solid var(--line);
  background: linear-gradient(150deg, rgba(255, 138, 61, .1), transparent 62%), var(--panel);
  box-shadow: var(--faq-shadow);
}

.page-faq .support-copy h3 {
  margin: 0 0 10px;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 900;
  color: var(--white);
}

.page-faq .support-copy p {
  margin: 0;
  max-width: 56ch;
  font-size: .9688rem;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.page-faq .contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border: 2px solid var(--line);
  background: var(--panel-2);
  box-shadow: var(--faq-shadow);
}

.page-faq .contact-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px clamp(14px, 2.2vw, 20px);
  border-bottom: 2px solid var(--line);
}

.page-faq .contact-list li:last-child {
  border-bottom: 0;
}

.page-faq .contact-key {
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-faq .contact-val {
  font-size: .9688rem;
  line-height: 1.7;
  color: var(--white);
  overflow-wrap: anywhere;
}

/* ---------- 尾部入口 ---------- */

.page-faq .faq-tail {
  border-bottom: 0;
}

.page-faq .tail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .tail-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 14px;
  row-gap: 4px;
  padding: clamp(15px, 2.2vw, 19px) clamp(15px, 2.4vw, 20px);
  border: 2px solid var(--line);
  background: var(--panel-2);
  box-shadow: var(--faq-shadow-sm);
  text-decoration: none;
  transition: border-color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .tail-link:hover,
.page-faq .tail-link:focus-visible {
  border-color: var(--ice);
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 rgba(3, 11, 20, .72);
}

.page-faq .tail-no {
  grid-row: 1 / span 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 2px solid var(--gold);
  color: var(--gold);
  font-size: .8125rem;
}

.page-faq .tail-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--white);
}

.page-faq .tail-desc {
  font-size: .9063rem;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */

@media (max-width: 560px) {
  .page-faq .faq-chip {
    font-size: .68rem;
  }

  .page-faq .qa-no {
    display: none;
  }

  .page-faq .faq-jump {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .step {
    grid-template-columns: 1fr;
  }

  .page-faq .step-no {
    width: 36px;
    height: 36px;
  }
}

@media (min-width: 720px) {
  .page-faq .steps {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .tail-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .contact-list li {
    grid-template-columns: minmax(88px, auto) minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  }

  .page-faq .download-layout {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
    align-items: start;
  }

  .page-faq .support-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    align-items: start;
  }

  .page-faq .faq-group--wide .faq-list {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .tail-link,
  .page-faq .qa,
  .page-faq .qa-sign::after {
    transition: none;
  }

  .page-faq .faq-jump a:hover,
  .page-faq .faq-jump a:focus-visible,
  .page-faq .tail-link:hover,
  .page-faq .tail-link:focus-visible {
    transform: none;
  }
}