.page-faq {
  --faq-index-w: 200px;
  background:
    radial-gradient(760px 420px at 92% -8%, rgba(201, 255, 79, .08), transparent 62%),
    var(--ink);
  color: var(--mist);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* 面包屑 */
.page-faq .faq-crumbs {
  padding-top: 22px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.page-faq .faq-crumbs a {
  color: var(--moss);
  text-decoration: none;
  transition: color 120ms var(--ease);
}
.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  color: var(--lime);
}

/* 首屏 */
.page-faq .faq-hero {
  padding: 22px 0 clamp(32px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-hero .label {
  margin-bottom: 18px;
}
.page-faq .faq-hero h1 {
  margin: 0 0 22px;
  max-width: 20ch;
  font-size: clamp(2.05rem, 8.2vw, 4.3rem);
  font-weight: 900;
  line-height: .98;
  letter-spacing: -.03em;
}
.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(234, 243, 236, .86);
}
.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  font-size: 12.5px;
  color: var(--moss);
}
.page-faq .faq-hero__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}
.page-faq .faq-hero__meta span {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--lime);
  letter-spacing: .02em;
}

/* 热门问题 */
.page-faq .faq-hot {
  display: grid;
  gap: 28px;
  padding-top: clamp(34px, 6vw, 62px);
}
.page-faq .faq-h2 {
  margin: 0 0 8px;
  font-size: clamp(1.5rem, 3.6vw, 2.05rem);
  font-weight: 900;
  letter-spacing: -.02em;
}
.page-faq .faq-h2__note {
  margin: 0 0 22px;
  font-size: 13.5px;
  color: var(--moss);
}
.page-faq .faq-hot__list {
  display: grid;
  gap: 14px;
}
.page-faq .faq-hot__card {
  padding: 20px 18px 22px;
  border-left: 2px solid var(--lime);
}
.page-faq .faq-hot__tag {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--moss);
}
.page-faq .faq-hot__no {
  font-family: var(--font-mono);
  letter-spacing: .08em;
  color: var(--lime);
}
.page-faq .faq-hot__card h3 {
  margin: 0 0 14px;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.5;
}
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
  display: grid;
  gap: 10px;
}
.page-faq .faq-steps li {
  position: relative;
  counter-increment: faqstep;
  padding-left: 30px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(234, 243, 236, .84);
}
.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--cyan);
}

.page-faq .faq-hot__figure {
  position: relative;
  aspect-ratio: 16 / 11;
  overflow: hidden;
}
.page-faq .faq-hot__figure img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* 主体两栏 */
.page-faq .faq-body {
  display: grid;
  gap: 26px;
  padding-top: clamp(38px, 6vw, 72px);
}

/* 分类索引 */
.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--moss);
}
.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-faq .faq-index__list::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  color: var(--mist);
  text-decoration: none;
  font-size: 12.5px;
  white-space: nowrap;
  transition: border-color 120ms var(--ease), color 120ms var(--ease);
}
.page-faq .faq-index__list a span {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--lime);
}
.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* 问答组 */
.page-faq .faq-group {
  scroll-margin-top: 72px;
}
.page-faq .faq-group + .faq-group {
  margin-top: clamp(36px, 5vw, 58px);
}
.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--lime);
}
.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.15rem, 2.8vw, 1.45rem);
  font-weight: 800;
  letter-spacing: -.01em;
}
.page-faq .faq-group__intro {
  margin: 14px 0 4px;
  max-width: 62ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--moss);
}

.page-faq .faq-flags {
  display: inline-flex;
  gap: 6px;
  margin-left: 6px;
  vertical-align: middle;
}
.page-faq .faq-flag {
  padding: 1px 6px;
  border: 1px solid;
  font-size: 10px;
  letter-spacing: .14em;
  line-height: 1.6;
}
.page-faq .faq-flag--red {
  color: var(--red);
  border-color: rgba(201, 86, 86, .5);
}
.page-faq .faq-flag--yellow {
  color: var(--yellow);
  border-color: rgba(216, 179, 76, .5);
}

/* 折叠条目 */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 17px 2px;
  list-style: none;
  cursor: pointer;
  font-size: 14.5px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--mist);
  transition: color 120ms var(--ease);
}
.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  color: var(--lime);
}
.page-faq .faq-item[open] > summary {
  color: var(--lime);
}
.page-faq .faq-item__q {
  display: flex;
  gap: 12px;
}
.page-faq .faq-item__no {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--moss);
}
.page-faq .faq-item__icon {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border: 1px solid var(--line);
}
.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--lime);
  transform: translate(-50%, -50%);
}
.page-faq .faq-item__icon::before {
  width: 10px;
  height: 1.5px;
}
.page-faq .faq-item__icon::after {
  width: 1.5px;
  height: 10px;
  transition: transform 180ms var(--ease), opacity 180ms var(--ease);
}
.page-faq .faq-item[open] .faq-item__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}
.page-faq .faq-item__a {
  padding: 0 2px 22px;
  animation: faq-in 180ms var(--ease);
}
.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 64ch;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(234, 243, 236, .84);
}
.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(92, 225, 196, .35);
}
.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-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* 联系卡片 */
.page-faq .faq-contact {
  position: relative;
  overflow: hidden;
  margin-top: 24px;
  padding: 26px 20px 28px;
}
.page-faq .faq-contact__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: .18;
}
.page-faq .faq-contact::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(105deg, rgba(6, 16, 13, .96) 34%, rgba(6, 16, 13, .58) 100%);
}
.page-faq .faq-contact__inner {
  position: relative;
  z-index: 1;
}
.page-faq .faq-contact__inner h3 {
  margin: 0;
  font-size: clamp(1.1rem, 3.4vw, 1.4rem);
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -.01em;
}
.page-faq .faq-contact__list {
  display: grid;
  gap: 10px;
  margin: 18px 0 22px;
  padding: 0;
}
.page-faq .faq-contact__list div {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 14px;
  align-items: baseline;
}
.page-faq .faq-contact__list dt {
  min-width: 76px;
  font-size: 10.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--moss);
}
.page-faq .faq-contact__list dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
  overflow-wrap: anywhere;
}

/* 平板及以上 */
@media (min-width: 720px) {
  .page-faq .faq-hot__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
  .page-faq .faq-hot__card:first-child {
    grid-column: 1 / -1;
  }
  .page-faq .faq-hot__figure {
    aspect-ratio: 16 / 9;
  }
  .page-faq .faq-contact {
    padding: 32px 30px 34px;
  }
}

/* 桌面端：200px 索引 + 宽 Accordion */
@media (min-width: 900px) {
  .page-faq .faq-hot {
    grid-template-columns: minmax(0, 1fr) 288px;
    gap: 44px;
    align-items: start;
  }
  .page-faq .faq-hot__media {
    position: sticky;
    top: 72px;
  }
  .page-faq .faq-hot__figure {
    aspect-ratio: 3 / 4;
  }
  .page-faq .faq-hot__list {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }
  .page-faq .faq-hot__card:first-child {
    grid-column: auto;
  }
  .page-faq .faq-hot__card {
    padding: 22px 22px 24px;
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 64px);
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 76px;
  }
  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    padding-bottom: 0;
    overflow: visible;
  }
  .page-faq .faq-index__list li {
    border-top: 1px solid var(--line);
  }
  .page-faq .faq-index__list li:last-child {
    border-bottom: 1px solid var(--line);
  }
  .page-faq .faq-index__list a {
    display: flex;
    width: 100%;
    padding: 12px 10px;
    border: 0;
    border-left: 2px solid transparent;
    font-size: 13px;
    white-space: normal;
    transition: border-color 120ms var(--ease), background 120ms var(--ease), color 120ms var(--ease);
  }
  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    border-left-color: var(--lime);
    background: rgba(201, 255, 79, .05);
    color: var(--lime);
  }
  .page-faq .faq-item > summary {
    padding: 19px 2px;
    font-size: 15px;
  }
  .page-faq .faq-item__a {
    padding-left: 24px;
  }
  .page-faq .faq-contact {
    padding: 36px 34px 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation: none !important;
    transition: none !important;
  }
}
<<<END>>>