.page-faq {
  --faq-line: rgba(11, 19, 43, 0.14);
  --faq-line-soft: rgba(11, 19, 43, 0.08);
  --faq-line-strong: rgba(11, 19, 43, 0.38);
  --faq-shadow: rgba(29, 53, 87, 0.16);
  display: block;
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--faq-line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-line-soft) 1px, transparent 1px);
  background-size: 100% 42px, 42px 100%;
  color: var(--char);
  font-family: var(--font-body);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-top: 14px;
  padding-bottom: 4px;
}

.page-faq .faq-crumb .breadcrumbs {
  font-size: 13px;
  letter-spacing: 0.02em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  border-bottom: 3px solid var(--char);
  background: linear-gradient(180deg, rgba(29, 53, 87, 0.09), rgba(29, 53, 87, 0) 78%);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 28px;
  padding-top: 26px;
  padding-bottom: 36px;
}

.page-faq .faq-hero__text {
  max-width: 60ch;
}

.page-faq .faq-hero .eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  padding: 3px 9px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--white);
  background: var(--ink);
  border-left: 4px solid var(--red);
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 7.4vw, 52px);
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: var(--char);
  text-wrap: balance;
}

.page-faq .faq-hero__lede {
  margin: 0 0 22px;
  font-size: 17px;
  line-height: 1.75;
  color: rgba(11, 19, 43, 0.76);
}

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

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

.page-faq .faq-frame {
  position: relative;
  padding: 8px;
  background: var(--white);
  border: 2px solid var(--char);
  box-shadow: 10px 10px 0 var(--faq-shadow);
}

.page-faq .faq-frame::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 46px;
  height: 46px;
  background: linear-gradient(225deg, var(--amber) 0 48%, transparent 48%);
  pointer-events: none;
}

.page-faq .faq-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  background: var(--mist);
}

.page-faq .faq-frame--wide img {
  aspect-ratio: 2 / 1;
}

.page-faq .faq-hero__fig .figure__cap {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(11, 19, 43, 0.6);
  border-left: 3px solid var(--amber);
  padding-left: 10px;
}

/* ---------- 全宽数据横切 ---------- */
.page-faq .faq-strip {
  background: var(--ink);
  border-top: 4px solid var(--red);
  border-bottom: 4px solid var(--amber);
}

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

.page-faq .faq-strip__cell {
  padding: 18px 14px;
  border-right: 1px solid var(--hair-light);
  border-bottom: 1px solid var(--hair-light);
}

.page-faq .faq-strip__cell:nth-child(2n) {
  border-right: 0;
}

.page-faq .faq-strip__cell:nth-child(n + 3) {
  border-bottom: 0;
}

.page-faq .faq-strip__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--white);
}

.page-faq .faq-strip__num em {
  margin-left: 2px;
  font-style: normal;
  font-size: 14px;
  color: var(--amber);
}

.page-faq .faq-strip__label {
  display: block;
  margin-top: 7px;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(241, 250, 238, 0.72);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 30px;
  padding-top: 32px;
  padding-bottom: 60px;
}

/* ---------- 左侧问题编号轨道 ---------- */
.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: rgba(11, 19, 43, 0.55);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__list > li {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1.5px solid var(--faq-line-strong);
  border-radius: 2px;
  background: var(--paper);
  color: var(--char);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--amber-deep);
  background: rgba(244, 162, 97, 0.2);
}

.page-faq .faq-rail__num {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--red);
}

.page-faq .faq-rail__link.is-active {
  background: var(--char);
  border-color: var(--char);
  color: var(--white);
}

.page-faq .faq-rail__link.is-active .faq-rail__num {
  color: var(--amber);
}

.page-faq .faq-rail__note {
  margin: 14px 0 0;
  padding-left: 10px;
  border-left: 3px solid var(--mist);
  font-size: 13px;
  line-height: 1.65;
  color: rgba(11, 19, 43, 0.6);
}

/* ---------- 问题区块 ---------- */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-block {
  margin-bottom: 46px;
  scroll-margin-top: 18px;
}

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

.page-faq .faq-block__head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--char);
}

.page-faq .faq-block__idx {
  flex: 0 0 auto;
  padding: 3px 7px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--white);
  background: var(--ink);
  border-radius: 2px;
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 21px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--char);
}

.page-faq .faq-block__lede {
  margin: 14px 0 18px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(11, 19, 43, 0.68);
}

.page-faq .faq-block__fig {
  margin: 0 0 22px;
}

.page-faq .faq-block__fig .figure__cap {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(11, 19, 43, 0.6);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-acc .accordion__item {
  border-bottom: 1px solid var(--faq-line);
}

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

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

.page-faq .faq-acc .faq-acc__btn {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  width: 100%;
  margin: 0;
  padding: 16px 10px 16px 6px;
  font-family: inherit;
  text-align: left;
  color: inherit;
  background: transparent;
  border: 0;
  cursor: pointer;
  transition: background-color 0.18s ease;
}

.page-faq .faq-acc .faq-acc__btn:hover {
  background: rgba(244, 162, 97, 0.16);
}

.page-faq .faq-acc .faq-acc__btn:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: -2px;
}

.page-faq .faq-acc .faq-acc__btn[aria-expanded="true"] {
  background: linear-gradient(90deg, rgba(230, 57, 70, 0.12), rgba(230, 57, 70, 0));
}

.page-faq .faq-acc__code {
  padding-top: 2px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--red);
}

.page-faq .faq-acc .faq-acc__btn[aria-expanded="true"] .faq-acc__code {
  color: var(--red-deep);
}

.page-faq .faq-acc__q {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.55;
  color: var(--char);
}

.page-faq .faq-acc .accordion__icon {
  flex: 0 0 auto;
  align-self: center;
  color: var(--ink);
}

.page-faq .faq-acc .faq-acc__panel {
  padding: 2px 10px 20px 0;
}

.page-faq .faq-acc .faq-acc__panel p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(11, 19, 43, 0.78);
}

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

.page-faq .faq-ref {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--faq-line-strong);
  font-size: 14px;
}

.page-faq .faq-ref__label {
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--white);
  background: var(--blue);
  border-radius: 2px;
}

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

.page-faq .faq-ref a:hover,
.page-faq .faq-ref a:focus-visible {
  color: var(--red);
}

/* ---------- 联系方式面板 ---------- */
.page-faq .faq-contact {
  margin-top: 26px;
  padding: 20px 18px 18px;
  background: var(--ink);
  border-left: 6px solid var(--red);
  color: var(--white);
}

.page-faq .faq-contact__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--hair-light);
}

.page-faq .faq-contact__row:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-contact__key {
  flex: 0 0 76px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-faq .faq-contact__val {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--white);
  word-break: break-all;
}

.page-faq .faq-contact .faq-contact__copy {
  flex: 0 0 auto;
  padding: 4px 11px;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
  background: transparent;
  border: 1px solid var(--amber);
  border-radius: 2px;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.page-faq .faq-contact .faq-contact__copy:hover,
.page-faq .faq-contact .faq-contact__copy:focus-visible {
  background: var(--amber);
  color: var(--char);
}

.page-faq .faq-contact__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--hair-light);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(241, 250, 238, 0.74);
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 479px) {
  .page-faq .faq-hero h1 {
    font-size: 28px;
  }

  .page-faq .faq-strip__num {
    font-size: 22px;
  }

  .page-faq .faq-acc .faq-acc__btn {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .page-faq .faq-acc .accordion__icon {
    display: none;
  }

  .page-faq .faq-contact__key {
    flex: 0 0 100%;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
    align-items: end;
    gap: 44px;
    padding-top: 38px;
    padding-bottom: 48px;
  }

  .page-faq .faq-strip__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-strip__cell {
    padding: 24px 20px;
    border-bottom: 0;
  }

  .page-faq .faq-strip__cell:nth-child(2n) {
    border-right: 1px solid var(--hair-light);
  }

  .page-faq .faq-strip__cell:last-child {
    border-right: 0;
  }

  .page-faq .faq-acc__q {
    font-size: 17px;
  }

  .page-faq .faq-acc .faq-acc__panel {
    padding-left: 52px;
    padding-right: 52px;
  }

  .page-faq .faq-contact {
    padding: 26px 26px 22px;
  }

  .page-faq .faq-contact__key {
    flex-basis: 88px;
  }
}

@media (min-width: 1020px) {
  .page-faq .faq-body {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
    padding-top: 44px;
    padding-bottom: 80px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 22px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: 2px solid var(--faq-line-strong);
  }

  .page-faq .faq-rail__list > li {
    flex: 0 0 auto;
  }

  .page-faq .faq-rail__link {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 10px;
    padding: 11px 12px 11px 14px;
    border: 0;
    border-left: 4px solid transparent;
    margin-left: -2px;
    background: transparent;
    white-space: normal;
  }

  .page-faq .faq-rail__link.is-active {
    background: rgba(11, 19, 43, 0.06);
    border-left-color: var(--red);
    color: var(--char);
  }

  .page-faq .faq-rail__link.is-active .faq-rail__num {
    color: var(--red);
  }

  .page-faq .faq-block__title {
    font-size: 24px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-body {
    grid-template-columns: 268px minmax(0, 1fr);
    gap: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .faq-acc .faq-acc__btn,
  .page-faq .faq-contact .faq-contact__copy {
    transition: none;
  }
}
<<<END>>>