.page-faq {
  --faq-line: rgba(169, 186, 200, 0.2);
  background: var(--c-night);
  color: var(--c-poster);
  font-family: var(--f-body);
  padding-top: clamp(74px, 9vw, 104px);
  padding-bottom: clamp(48px, 7vw, 92px);
  overflow-x: hidden;
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq a {
  color: inherit;
}

/* 面包屑 */
.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--c-ice);
}

.page-faq .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 10px;
  color: var(--c-steel);
}

.page-faq .breadcrumb-list a {
  color: var(--c-ice);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

.page-faq .breadcrumb-list a:hover,
.page-faq .breadcrumb-list a:focus-visible {
  color: var(--c-cyan);
}

.page-faq .breadcrumb-current {
  color: var(--c-poster);
}

.page-faq .faq-crumb-note {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-steel);
  text-transform: uppercase;
}

/* 首屏 */
.page-faq .faq-hero {
  padding-top: clamp(26px, 5vw, 56px);
  padding-bottom: clamp(26px, 4vw, 46px);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 40px);
  align-items: end;
}

.page-faq .faq-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-faq .faq-eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--c-cyan);
}

.page-faq .faq-h1 {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(1.95rem, 6.2vw, 4rem);
  line-height: 1.06;
  letter-spacing: -0.015em;
  max-width: 17ch;
}

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

.page-faq .faq-lead {
  margin: 0;
  padding-left: 16px;
  border-left: 2px solid var(--c-orange);
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-ice);
  max-width: 44ch;
}

/* 三步路径带 */
.page-faq .faq-path {
  margin-top: clamp(6px, 2vw, 18px);
  border-top: 1px solid var(--c-broadcast);
  border-bottom: 1px solid var(--c-broadcast);
  background: linear-gradient(180deg, rgba(21, 74, 102, 0.28), rgba(7, 26, 44, 0));
}

.page-faq .faq-path-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  padding: clamp(16px, 2.4vw, 24px) 0 clamp(12px, 1.8vw, 18px);
}

.page-faq .faq-path-title {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.35;
}

.page-faq .faq-path-note {
  margin: 0;
  font-size: 13px;
  color: var(--c-steel);
}

.page-faq .faq-path-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--c-broadcast);
}

.page-faq .faq-path-step {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(16px, 2.6vw, 28px);
  background: var(--c-night);
}

.page-faq .faq-path-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--c-broadcast);
}

.page-faq .faq-path-step:nth-child(1)::before {
  background: var(--c-cyan);
}

.page-faq .faq-path-step:nth-child(2)::before {
  background: var(--c-orange);
}

.page-faq .faq-path-num {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--c-steel);
}

.page-faq .faq-path-step-title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-poster);
}

.page-faq .faq-path-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-ice);
}

/* 双栏主体 */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 52px);
  margin-top: clamp(32px, 5vw, 60px);
}

.page-faq .faq-index-title {
  margin: 0 0 12px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-steel);
}

.page-faq .faq-index-list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--c-broadcast);
}

.page-faq .faq-index-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-left: -1px;
  padding: 9px 8px 9px 14px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-ice);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .faq-index-link .mono {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--c-steel);
  letter-spacing: 0.06em;
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--c-poster);
  border-left-color: var(--c-cyan);
  background: rgba(53, 242, 214, 0.07);
}

.page-faq .faq-index-link:hover .mono,
.page-faq .faq-index-link:focus-visible .mono {
  color: var(--c-cyan);
}

/* 问答分组 */
.page-faq .faq-group + .faq-group {
  margin-top: clamp(32px, 5vw, 58px);
}

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--c-broadcast);
}

.page-faq .faq-group-num {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-cyan);
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1.2rem, 2.4vw, 1.75rem);
  line-height: 1.32;
  letter-spacing: -0.01em;
}

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

.page-faq .faq-q {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 22px;
  gap: 16px;
  align-items: start;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
  font-size: clamp(15px, 1.1vw, 17px);
  font-weight: 500;
  line-height: 1.6;
  color: var(--c-poster);
  transition: color var(--t-fast) var(--ease);
}

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

.page-faq .faq-q:hover {
  color: var(--c-cyan);
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

.page-faq .faq-q-icon {
  position: relative;
  display: block;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--c-broadcast);
}

.page-faq .faq-q-icon::before,
.page-faq .faq-q-icon::after {
  content: "";
  position: absolute;
  background: var(--c-cyan);
  transition: transform var(--t-mid) var(--ease), opacity var(--t-mid) var(--ease);
}

.page-faq .faq-q-icon::before {
  left: 50%;
  top: 5px;
  width: 1px;
  height: 10px;
  transform: translateX(-50%);
}

.page-faq .faq-q-icon::after {
  top: 50%;
  left: 5px;
  width: 10px;
  height: 1px;
  transform: translateY(-50%);
}

.page-faq .faq-item[open] .faq-q-icon::before {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-item[open] .faq-q {
  color: var(--c-poster);
}

.page-faq .faq-a {
  padding: 0 26px 18px 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-ice);
}

.page-faq .faq-a p {
  margin: 0;
}

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

/* 联系信息强调块 */
.page-faq .faq-contact {
  margin-top: 16px;
  padding: 16px 18px;
  border-left: 2px solid var(--c-cyan);
  background: rgba(221, 247, 244, 0.1);
}

.page-faq .faq-contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  margin: 0;
  padding: 5px 0;
}

.page-faq .faq-contact-key {
  min-width: 62px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-steel);
}

.page-faq .faq-contact-val {
  font-family: var(--f-mono);
  font-size: 14px;
  color: var(--c-glass);
  word-break: break-all;
}

/* 图片 */
.page-faq .faq-fig {
  margin: 24px 0 8px;
  border: 1px solid var(--c-broadcast);
  background: var(--c-stand);
}

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

.page-faq .faq-fig figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--c-broadcast);
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-steel);
}

/* 尾部引导 */
.page-faq .faq-outro {
  margin-top: clamp(30px, 4.5vw, 52px);
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--c-broadcast);
  border-left: 3px solid var(--c-orange);
  background: var(--c-stand);
}

.page-faq .faq-outro-text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-ice);
}

.page-faq .faq-outro-text strong {
  color: var(--c-poster);
}

.page-faq .faq-outro-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-outro-links .btn {
  text-decoration: none;
}

/* 平板与桌面 */
@media (min-width: 760px) {
  .page-faq .faq-path-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-a {
    padding-right: 48px;
    padding-left: 0;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

  .page-faq .faq-lead {
    font-size: 16px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(180px, 230px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q,
  .page-faq .faq-q-icon::before,
  .page-faq .faq-q-icon::after,
  .page-faq .faq-index-link,
  .page-faq .breadcrumb-list a {
    transition: none;
  }
}