.page-faq {
  --faq-gap: clamp(20px, 3vw, 40px);
  --faq-line: 2px solid var(--line-strong);
  background: var(--ink);
  color: var(--fog);
  font-family: var(--font-body);
  padding-bottom: clamp(48px, 8vw, 100px);
}

/* 面包屑 */
.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 clamp(18px, 3vw, 34px);
  padding: 0;
  list-style: none;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mute);
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--line-strong);
}

.page-faq .breadcrumb a {
  color: var(--mute);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--step) ease, border-color var(--step) ease;
}

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

/* 首屏 */
.page-faq .faq-intro__grid {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-intro h1 {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-size: clamp(32px, 8vw, 68px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-faq .faq-intro__hl {
  display: block;
  color: var(--lime);
}

.page-faq .faq-intro__lead {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.8;
  color: var(--fog);
}

.page-faq .faq-intro__facts {
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-intro__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mute);
}

.page-faq .faq-intro__facts strong {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-intro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* 图片容器 */
.page-faq .figure {
  margin: 0;
}

.page-faq .figure__media {
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line-strong);
}

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

.page-faq .figure__caption {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mute);
}

.page-faq .figure__num {
  flex: 0 0 auto;
  font-family: var(--font-display);
  letter-spacing: 0.1em;
  color: var(--whistle);
}

.page-faq .faq-intro__figure .figure__media::after {
  content: "";
  position: absolute;
  inset: auto 0 0 auto;
  width: 72px;
  height: 3px;
  background: var(--lime);
}

/* 主体两栏 */
.page-faq .faq-body {
  margin-top: clamp(36px, 6vw, 72px);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

/* 分类索引 */
.page-faq .faq-index {
  border-top: var(--faq-line);
  padding-top: 16px;
}

.page-faq .faq-index__list {
  display: grid;
  gap: 2px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 2px 10px;
  padding: 12px 0;
  color: var(--fog);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color var(--step) ease, transform var(--step) ease;
}

.page-faq .faq-index__num {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-index__label {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.35;
  transition: color var(--step) ease;
}

.page-faq .faq-index__desc {
  grid-column: 2;
  font-size: 12px;
  line-height: 1.5;
  color: var(--mute);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-bottom-color: var(--cyan);
  transform: translateX(2px);
}

.page-faq .faq-index__link:hover .faq-index__label,
.page-faq .faq-index__link:focus-visible .faq-index__label {
  color: var(--cyan);
}

/* 问题分组 */
.page-faq .faq-group {
  scroll-margin-top: 24px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(36px, 5vw, 64px);
}

.page-faq .faq-group__head {
  padding-bottom: 14px;
  border-bottom: var(--faq-line);
}

.page-faq .faq-group__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--whistle);
}

.page-faq .faq-group__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: clamp(20px, 3vw, 27px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--fog);
}

.page-faq .faq-group__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mute);
}

/* 手风琴 */
.page-faq .faq-group__list {
  margin-top: 2px;
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-head);
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--fog);
  transition: color var(--step) ease;
}

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

.page-faq .faq-item__idx {
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mute);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-item__q::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1;
  color: var(--whistle);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
}

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-item__a {
  margin: 0 0 18px 2px;
  padding: 2px 0 2px 16px;
  border-left: 3px solid var(--lime);
  font-size: 15px;
  line-height: 1.78;
  color: var(--fog);
  animation: faq-reveal 220ms ease both;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 60ch;
}

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

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 224, 200, 0.45);
  transition: border-color var(--step) ease, color var(--step) ease;
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 联系面板 */
.page-faq .faq-contact {
  margin-top: clamp(28px, 4vw, 44px);
  padding: clamp(20px, 3vw, 34px);
  background: var(--panel);
  border-top: 3px solid var(--whistle);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-faq .faq-contact__title {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-size: clamp(19px, 2.6vw, 24px);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-faq .faq-contact__email {
  display: inline-block;
  max-width: 100%;
  margin: 14px 0 20px;
  padding: 10px 14px;
  background: var(--paper);
  color: var(--ink);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: clamp(12px, 2.6vw, 15px);
  letter-spacing: 0.02em;
  line-height: 1.5;
  word-break: break-all;
  border-left: 3px solid var(--whistle);
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.page-faq .faq-contact__list > div {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-contact__list dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mute);
}

.page-faq .faq-contact__list dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--fog);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  margin: 16px 0 20px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mute);
}

/* 断点 */
@media (min-width: 640px) {
  .page-faq .faq-intro__facts {
    grid-template-columns: repeat(3, auto);
    justify-content: start;
    gap: 26px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-intro__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 260px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
  }
}
<<<END>>>