.page-faq {
  --faq-pad: clamp(48px, 7vw, 96px);
  --faq-card: rgba(15, 29, 51, .72);
  --faq-panel: linear-gradient(155deg, rgba(38, 58, 85, .5), rgba(15, 29, 51, .78));
  background:
    radial-gradient(1200px 700px at 92% -10%, rgba(74, 222, 208, .09), transparent 60%),
    radial-gradient(900px 560px at -8% 22%, rgba(255, 107, 26, .08), transparent 58%),
    var(--ink);
  color: var(--mist);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-faq .faq-crumbs {
  padding-block: 22px 0;
}

.page-faq .faq-crumbs .breadcrumb {
  font-size: 13px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(20px, 4vw, 40px) clamp(50px, 7vw, 92px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(30px, 4.5vw, 56px);
  align-items: center;
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-size: clamp(29px, 6.4vw, 58px);
  line-height: 1.06;
  letter-spacing: -.025em;
  font-weight: 800;
  color: var(--white);
  margin: .34em 0 .5em;
}

.page-faq .faq-hero__lead {
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: rgba(238, 243, 249, .78);
  margin: 0 0 24px;
  max-width: 58ch;
}

.page-faq .faq-hero__tags {
  margin: 0 0 26px;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero__media {
  position: relative;
}

.page-faq .faq-hero__media::before {
  content: "";
  position: absolute;
  top: -16px;
  right: -12px;
  width: 108px;
  height: 108px;
  border: 1px dashed rgba(74, 222, 208, .38);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  left: -10px;
  bottom: 18px;
  width: 54px;
  height: 6px;
  border-radius: var(--pill);
  background: var(--orange);
  pointer-events: none;
}

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

/* ---------- 通用区块标题 ---------- */
.page-faq .faq-guide,
.page-faq .faq-tiers,
.page-faq .faq-select,
.page-faq .faq-lookup,
.page-faq .faq-service {
  padding-block: var(--faq-pad);
  position: relative;
}

.page-faq .faq-tiers {
  background: linear-gradient(180deg, rgba(15, 29, 51, .62), rgba(7, 13, 24, 0) 78%);
}

.page-faq .faq-select {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-lookup {
  background: linear-gradient(180deg, rgba(15, 29, 51, .55), rgba(7, 13, 24, 0) 82%);
}

.page-faq .faq-head {
  max-width: 720px;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-faq .faq-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.9vw, 38px);
  line-height: 1.15;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--white);
  margin: 10px 0 14px;
}

.page-faq .faq-head p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(142, 155, 171, .95);
}

/* ---------- 三步对照 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px 20px;
  padding: clamp(22px, 3vw, 34px) 0;
  border-bottom: 1px solid var(--line-soft);
  transition: padding-left .24s var(--ease);
}

.page-faq .faq-step:hover {
  padding-left: 10px;
}

.page-faq .faq-step__num {
  font-size: clamp(26px, 4.6vw, 44px);
  font-weight: 700;
  line-height: .95;
  letter-spacing: -.03em;
  color: var(--orange);
}

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

.page-faq .faq-step__title {
  font-size: clamp(17px, 2vw, 19px);
  font-weight: 700;
  color: var(--white);
  margin: 0 0 9px;
  letter-spacing: -.01em;
}

.page-faq .faq-step__body p {
  margin: 0 0 13px;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(238, 243, 249, .74);
}

/* ---------- 9 档区 ---------- */
.page-faq .faq-tiers__intro {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  margin-bottom: clamp(28px, 4vw, 46px);
  align-items: end;
}

.page-faq .faq-tiers__intro .faq-head {
  margin-bottom: 0;
}

.page-faq .faq-tiers__figure {
  margin: 0;
}

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

.page-faq .faq-tiers__layout {
  display: grid;
  gap: 26px;
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border-radius: var(--pill);
  border: 1px solid var(--line-soft);
  background: rgba(15, 29, 51, .5);
  color: rgba(238, 243, 249, .68);
  font-size: 13.5px;
  white-space: nowrap;
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-rail__link .mono {
  font-size: 12px;
  color: var(--orange);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--white);
  border-color: rgba(255, 107, 26, .7);
  background: rgba(255, 107, 26, .12);
}

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

.page-faq .faq-tier {
  border-bottom: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--bar-h) + 24px);
}

.page-faq .faq-tier:first-child {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-tier__head {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-tier__trigger {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 17px 6px;
  background: none;
  border: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  border-radius: var(--r-sm);
  transition: background .2s var(--ease);
}

.page-faq .faq-tier__trigger:hover {
  background: rgba(74, 222, 208, .07);
}

.page-faq .faq-tier__code {
  flex: 0 0 auto;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--orange);
}

.page-faq .faq-tier__name {
  flex: 1 1 auto;
  min-width: 0;
  font-size: clamp(15.5px, 1.8vw, 17px);
  font-weight: 700;
  color: var(--mist);
  letter-spacing: -.01em;
}

.page-faq .faq-tier__trigger .tag {
  flex: 0 0 auto;
}

.page-faq .faq-tier__trigger::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-left: 4px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform .26s var(--ease);
}

.page-faq .faq-tier__trigger[aria-expanded="true"]::after {
  transform: rotate(-135deg);
}

.page-faq .faq-tier__panel {
  padding: 0 6px 22px;
}

.page-faq .faq-tier__panel:not([hidden]) {
  animation: faq-slide .28s var(--ease) both;
}

@keyframes faq-slide {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: none; }
}

.page-faq .faq-tier__meta {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--faq-panel);
}

.page-faq .faq-tier__meta dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--cyan);
  margin: 0 0 6px;
}

.page-faq .faq-tier__meta dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(238, 243, 249, .82);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(15, 29, 51, .86), rgba(7, 13, 24, .76));
  overflow: hidden;
  transition: border-color .22s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(74, 222, 208, .5);
}

.page-faq .faq-item__head {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-item__trigger {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 16px 18px;
  background: none;
  border: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background .2s var(--ease);
}

.page-faq .faq-item__trigger:hover {
  background: rgba(74, 222, 208, .06);
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--orange);
  padding-top: 4px;
  letter-spacing: .04em;
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  font-size: clamp(15px, 1.7vw, 16.5px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .faq-item__trigger::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--cyan);
  padding-top: 3px;
  transition: transform .24s var(--ease);
}

.page-faq .faq-item__trigger[aria-expanded="true"]::after {
  transform: rotate(45deg);
}

.page-faq .faq-item__panel {
  padding: 0 18px 18px 44px;
  animation: faq-slide .26s var(--ease) both;
}

.page-faq .faq-item__panel p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(238, 243, 249, .74);
}

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

.page-faq .faq-more {
  margin: 26px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(142, 155, 171, .95);
}

.page-faq .faq-more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(74, 222, 208, .45);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-more a:hover {
  color: var(--white);
  border-color: var(--white);
}

/* ---------- 售后登记 ---------- */
.page-faq .faq-service {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-service__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-faq .faq-service__lead {
  margin: 0 0 22px;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(142, 155, 171, .95);
}

.page-faq .faq-check {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-check li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px;
  line-height: 1.7;
  color: rgba(238, 243, 249, .84);
}

.page-faq .faq-check li:first-child {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-check__num {
  flex: 0 0 auto;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: .04em;
}

.page-faq .faq-service__note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(142, 155, 171, .9);
}

.page-faq .faq-contact {
  position: relative;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(38, 58, 85, .62), rgba(7, 13, 24, .86));
  padding: clamp(24px, 3.6vw, 38px);
  overflow: hidden;
}

.page-faq .faq-contact::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--orange), var(--cyan));
}

.page-faq .faq-contact__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 24px);
  font-weight: 800;
  letter-spacing: -.015em;
  color: var(--white);
}

.page-faq .faq-contact__hint {
  margin: 0 0 22px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(142, 155, 171, .95);
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 16px;
  margin: 0 0 26px;
}

.page-faq .faq-contact__list dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--cyan);
  margin-bottom: 5px;
}

.page-faq .faq-contact__list dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .faq-contact__list dd a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(74, 222, 208, .4);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-contact__list dd a:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-contact__cta {
  display: inline-flex;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-tier__meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-tiers__intro {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  }

  .page-faq .faq-service__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-tiers__layout {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

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

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 5px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    width: 100%;
    white-space: normal;
    border-radius: var(--r-sm);
    padding: 11px 14px;
  }

  .page-faq .faq-tier__meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-faq .faq-hero__media::before {
    display: none;
  }

  .page-faq .faq-tier__trigger {
    flex-wrap: wrap;
    gap: 10px;
  }

  .page-faq .faq-tier__name {
    flex: 1 1 100%;
    order: 3;
  }

  .page-faq .faq-tier__trigger::after {
    order: 2;
  }

  .page-faq .faq-item__trigger {
    padding: 14px 14px;
  }

  .page-faq .faq-item__panel {
    padding: 0 14px 16px 40px;
  }
}
<<<END>>>