.page-faq {
  --faq-gap: clamp(20px, 3vw, 32px);
  --faq-card-bg: #FFFFFF;
  background: var(--paper);
  padding-block: clamp(20px, 3vw, 32px) clamp(48px, 7vw, 96px);
  color: var(--navy);
}

.page-faq .crumbs {
  margin-bottom: 20px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: center;
  padding: clamp(20px, 3.4vw, 44px);
  background-color: var(--navy);
  background-image:
    linear-gradient(var(--line-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-light) 1px, transparent 1px);
  background-size: 32px 32px, 32px 32px;
  border: var(--bw) solid var(--ink);
  box-shadow: var(--shadow-hard);
  color: var(--paper);
  margin-bottom: var(--faq-gap);
}

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

.page-faq .faq-hero .eyebrow {
  color: var(--gold);
  letter-spacing: 0.16em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  margin: 0 0 14px;
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.05;
  font-size: clamp(2rem, 5.4vw, 3.6rem);
  color: var(--paper);
}

.page-faq .faq-hero__title::after {
  content: "";
  display: block;
  width: 72px;
  height: 4px;
  background: var(--gold);
  margin-top: 20px;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: clamp(0.94rem, 1.4vw, 1.02rem);
  line-height: 1.85;
  color: rgba(247, 244, 236, 0.82);
}

.page-faq .faq-hero__jump {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-hero__jump a {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--line-gold);
  color: var(--gold-bright);
  font-size: 0.8rem;
  font-family: var(--font-mono);
  text-decoration: none;
  transition: background-color var(--t), color var(--t), border-color var(--t);
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.page-faq .media-frame {
  margin: 0;
  overflow: hidden;
  background: var(--ink);
  border: var(--bw) solid var(--line-gold);
}

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

.page-faq .faq-hero__media {
  border-color: rgba(212, 166, 67, 0.55);
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: start;
}

/* ---------- 侧栏索引 ---------- */
.page-faq .faq-rail {
  border: var(--bw) solid var(--line-dark);
  background: var(--bone);
  padding: 16px 14px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--steel);
  text-transform: uppercase;
}

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

.page-faq .faq-rail__link {
  display: block;
  padding: 8px 10px;
  border-left: 3px solid transparent;
  color: var(--navy);
  font-size: 0.88rem;
  line-height: 1.5;
  text-decoration: none;
  transition: background-color var(--t), border-color var(--t), color var(--t);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: var(--paper);
  border-left-color: var(--gold);
}

.page-faq .faq-rail__link[aria-current] {
  background: var(--navy);
  border-left-color: var(--gold);
  color: var(--paper);
}

.page-faq .faq-rail__foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-dark);
  font-size: 0.8rem;
  color: var(--steel);
}

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

.page-faq .faq-rail__foot a:hover {
  color: var(--orange);
}

/* ---------- 分组 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-group {
  margin-bottom: clamp(32px, 5vw, 56px);
  scroll-margin-top: 96px;
}

.page-faq .faq-group:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: var(--bw) solid var(--navy);
  margin-bottom: 14px;
}

.page-faq .faq-group__num {
  font-size: 0.78rem;
  color: var(--gold);
  letter-spacing: 0.12em;
  flex: none;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.01em;
  font-size: clamp(1.3rem, 2.6vw, 1.75rem);
  line-height: 1.3;
}

.page-faq .faq-group__desc {
  margin: 0 0 20px;
  max-width: 64ch;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 快速入门卡片 ---------- */
.page-faq .start-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 20px;
}

.page-faq .start-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
  background: var(--faq-card-bg);
  border: var(--bw) solid var(--navy);
  box-shadow: 4px 4px 0 rgba(10, 17, 40, 0.14);
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}

.page-faq .start-card:hover {
  transform: translate(-2px, -2px);
  border-color: var(--gold);
  box-shadow: 6px 6px 0 var(--shadow-gold);
}

.page-faq .start-card__num {
  margin: 0;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .start-card__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 900;
  line-height: 1.4;
  color: var(--navy);
}

.page-faq .start-card__desc {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .start-card__link {
  margin-top: auto;
  align-self: flex-start;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--navy);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--t), color var(--t);
}

.page-faq .start-card__link:hover,
.page-faq .start-card__link:focus-visible {
  border-bottom-color: var(--gold);
  color: var(--orange);
}

/* ---------- 问答折叠 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 12px;
}

.page-faq .qa {
  background: var(--faq-card-bg);
  border: var(--bw) solid var(--line-dark);
  transition: border-color var(--t), transform var(--t);
}

.page-faq .qa:hover {
  border-color: var(--gold);
}

.page-faq .qa[open] {
  border-color: var(--gold);
  transform: translateX(2px);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  font-size: 0.96rem;
  font-weight: 600;
  line-height: 1.65;
  color: var(--navy);
  list-style: none;
}

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1.4;
  color: var(--gold);
}

.page-faq .qa[open] .qa__q::after {
  content: "\2212";
}

.page-faq .qa__num {
  flex: none;
  padding-top: 0.3em;
  font-size: 0.72rem;
  color: var(--steel);
}

.page-faq .qa__a {
  padding: 12px 16px 16px 42px;
  border-top: 1px dashed var(--line-dark);
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--steel);
}

.page-faq .qa__a p {
  margin: 0 0 8px;
}

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

/* ---------- 深色分组 ---------- */
.page-faq .faq-group--dark {
  padding: clamp(18px, 3vw, 32px);
  background-color: var(--navy);
  background-image:
    linear-gradient(rgba(247, 244, 236, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(247, 244, 236, 0.06) 1px, transparent 1px);
  background-size: 32px 32px, 32px 32px;
  border: var(--bw) solid var(--ink);
  box-shadow: var(--shadow-hard);
  color: var(--paper);
}

.page-faq .faq-group--dark .faq-group__head {
  border-bottom-color: var(--line-gold);
}

.page-faq .faq-group--dark .faq-group__title {
  color: var(--paper);
}

.page-faq .faq-group--dark .faq-group__desc {
  color: var(--cool);
}

.page-faq .faq-group--dark .qa {
  background: rgba(247, 244, 236, 0.05);
  border-color: var(--line-light);
}

.page-faq .faq-group--dark .qa:hover,
.page-faq .faq-group--dark .qa[open] {
  border-color: var(--gold);
}

.page-faq .faq-group--dark .qa__q {
  color: var(--paper);
}

.page-faq .faq-group--dark .qa__num {
  color: var(--gold);
}

.page-faq .faq-group--dark .qa__a {
  border-top-color: var(--line-light);
  color: var(--cool);
}

.page-faq .faq-figure {
  margin-top: 22px;
  border-color: var(--line-gold);
}

.page-faq .faq-figure .media-frame__cap {
  padding: 10px 12px;
  margin: 0;
  background: var(--ink);
  color: var(--cool);
  font-size: 0.76rem;
  font-style: italic;
  line-height: 1.6;
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding: clamp(18px, 3vw, 32px);
  background: var(--bone);
  border: var(--bw) solid var(--gold);
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 0;
  min-width: 0;
}

.page-faq .faq-contact .contact-line {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-dark);
  word-break: break-word;
}

.page-faq .faq-contact .contact-line:first-child {
  padding-top: 0;
}

.page-faq .faq-contact .contact-key {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.page-faq .faq-contact .contact-val {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--navy);
}

.page-faq .faq-contact__aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
  justify-content: space-between;
  min-width: 0;
}

.page-faq .faq-contact__note {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--steel);
  border-left: 3px solid var(--gold);
  padding-left: 14px;
}

.page-faq .faq-contact .btn {
  align-self: flex-start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .start-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-contact .contact-line {
    grid-template-columns: 108px minmax(0, 1fr);
    align-items: baseline;
  }
  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
  .page-faq .faq-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 40px;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero {
    gap: 48px;
  }
}