.page-faq {
  --faq-gap: clamp(40px, 6vw, 84px);
  padding-bottom: clamp(48px, 8vw, 100px);
}

.page-faq .sec-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.2vw, 40px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

.page-faq .sec-lead {
  margin: 12px 0 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--cool-gray);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(18px, 3vw, 34px) 0 clamp(30px, 5vw, 54px);
}

.page-faq .faq-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--brand-red);
}

.page-faq .faq-hero__kicker::before {
  content: "";
  flex: 0 0 auto;
  width: 30px;
  height: 3px;
  background: var(--brand-red);
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  max-width: 18ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.6vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: var(--ink-900);
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 36em;
  font-size: 17px;
  line-height: 1.78;
  color: var(--ink-900);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  margin: 28px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
  font-size: 14px;
  color: var(--cool-gray);
}

.page-faq .faq-hero__meta b {
  margin-right: 5px;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

/* ---------- 五步上手 ---------- */
.page-faq .faq-steps {
  padding: var(--faq-gap) 0 0;
}

.page-faq .steprail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--ink-900);
}

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

.page-faq .steprail__link {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 4px 14px;
  padding: 16px 4px 18px;
  color: inherit;
  text-decoration: none;
  transition: background 0.2s var(--ease);
}

.page-faq .steprail__link:hover,
.page-faq .steprail__link:focus-visible {
  background: var(--cream-100);
}

.page-faq .steprail__idx {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--brand-red);
}

.page-faq .steprail__label {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-900);
}

.page-faq .steprail__hint {
  grid-column: 2 / -1;
  font-size: 13px;
  line-height: 1.6;
  color: var(--cool-gray);
}

.page-faq .faq-steps__fig {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

.page-faq .stepdetails {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: clamp(16px, 3vw, 32px);
}

.page-faq .stepdetail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: clamp(22px, 3vw, 34px) 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--topbar-h) + 20px);
}

.page-faq .stepdetail:last-child {
  border-bottom: 0;
}

.page-faq .stepdetail__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--brand-red);
}

.page-faq .stepdetail h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-faq .stepdetail p {
  margin: 0;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-900);
}

.page-faq .stepdetail__check {
  padding: 10px 14px;
  border-left: 3px solid var(--brand-red);
  background: var(--cream-100);
  font-size: 15px !important;
  line-height: 1.7 !important;
}

@media (min-width: 800px) {
  .page-faq .steprail {
    grid-template-columns: repeat(5, 1fr);
  }

  .page-faq .steprail__item {
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .steprail__item:first-child {
    border-left: 0;
  }

  .page-faq .steprail__link {
    display: block;
    padding: 18px 16px 24px;
  }

  .page-faq .steprail__item:first-child .steprail__link {
    padding-left: 0;
  }

  .page-faq .steprail__idx {
    display: block;
    margin-bottom: 10px;
    font-size: 26px;
  }

  .page-faq .steprail__label {
    display: block;
    margin-bottom: 6px;
  }

  .page-faq .steprail__hint {
    display: block;
  }

  .page-faq .stepdetail {
    grid-template-columns: 62px 1fr;
    gap: 6px 22px;
  }

  .page-faq .stepdetail__num {
    grid-row: 1 / span 3;
    padding-top: 6px;
  }

  .page-faq .stepdetail__num,
  .page-faq .stepdetail h3,
  .page-faq .stepdetail p {
    grid-column: 2;
  }

  .page-faq .stepdetail > * {
    grid-column: 2;
  }

  .page-faq .stepdetail > .stepdetail__num {
    grid-column: 1;
  }
}

/* ---------- 术语 ---------- */
.page-faq .faq-terms {
  padding: var(--faq-gap) 0;
  background: var(--cream-100);
}

.page-faq .terms-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
  margin-top: 30px;
}

.page-faq .terms-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-faq .termcard {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.page-faq .termcard:first-child {
  border-top: 2px solid var(--ink-900);
  padding-top: 24px;
}

.page-faq .termcard__name {
  display: inline-block;
  margin: 0 0 12px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--cream-050);
  background: var(--deep-blue);
  border-radius: 2px;
}

.page-faq .termcard__desc {
  margin: 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-900);
}

.page-faq .termcard__warn {
  margin: 12px 0 0;
  padding: 10px 14px;
  border-left: 3px solid var(--amber);
  background: rgba(242, 169, 59, 0.16);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-900);
}

.page-faq .termcard__warn span {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--red-deep);
}

.page-faq .terms-fig {
  margin: 0;
}

@media (min-width: 940px) {
  .page-faq .terms-layout {
    grid-template-columns: 1.4fr 1fr;
    gap: 52px;
    align-items: start;
  }

  .page-faq .terms-fig {
    position: sticky;
    top: calc(var(--topbar-h) + 24px);
  }
}

/* ---------- 常见问题 ---------- */
.page-faq .faq-qas {
  padding: var(--faq-gap) 0 0;
}

.page-faq .faq-accordion {
  margin-top: 30px;
  border-top: 2px solid var(--ink-900);
}

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

.page-faq .faq-accordion .acc__btn {
  display: flex;
  width: 100%;
  align-items: baseline;
  justify-content: space-between;
  gap: 22px;
  padding: 20px 2px;
  border: 0;
  background: none;
  text-align: left;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink-900);
  cursor: pointer;
}

.page-faq .faq-accordion .acc__btn::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 5px;
  border-right: 2px solid var(--brand-red);
  border-bottom: 2px solid var(--brand-red);
  transform: rotate(45deg);
  transition: transform 0.25s var(--ease);
}

.page-faq .faq-accordion .acc__btn:hover {
  color: var(--red-deep);
}

.page-faq .faq-accordion .acc:has(.acc__panel[data-open="true"]) .acc__btn::after {
  transform: rotate(-135deg);
}

.page-faq .faq-accordion .acc__panel {
  border-left: 3px solid var(--brand-red);
  background: var(--cream-100);
}

.page-faq .faq-accordion .acc__panel > .acc__inner {
  padding-inline: 18px;
}

.page-faq .faq-accordion .acc__inner p {
  margin: 0 0 12px;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-900);
}

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

.page-faq .faq-accordion .acc__inner a {
  color: var(--red-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 帮助文档索引 ---------- */
.page-faq .faq-docs {
  padding: var(--faq-gap) 0;
  background: var(--deep-blue);
}

.page-faq .faq-docs .sec-title {
  color: var(--cream-050);
}

.page-faq .faq-docs .sec-lead {
  color: rgba(246, 241, 231, 0.74);
}

.page-faq .docgrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  background: rgba(246, 241, 231, 0.18);
}

.page-faq .docgroup {
  padding: 24px 22px 28px;
  background: var(--deep-blue);
}

.page-faq .docgroup--lead {
  box-shadow: inset 0 3px 0 0 var(--amber);
}

.page-faq .docgroup h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--cream-050);
}

.page-faq .docgroup__count {
  display: inline-block;
  margin: 10px 0 0;
  padding: 2px 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--deep-blue);
  background: var(--cyan);
}

.page-faq .docgroup p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(246, 241, 231, 0.78);
}

@media (min-width: 700px) {
  .page-faq .docgrid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1080px) {
  .page-faq .docgrid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---------- 联络 ---------- */
.page-faq .faq-help {
  padding: var(--faq-gap) 0 0;
}

.page-faq .helpgrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin: 32px 0 0;
}

.page-faq .helpcard {
  padding: 22px 20px 24px;
  background: var(--cream-050);
  border: 1px solid var(--line);
  border-top: 4px solid var(--brand-red);
}

.page-faq .helpcard h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--ink-900);
}

.page-faq .helpcard p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-900);
}

.page-faq .helpcard__meta {
  margin-top: 16px !important;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 13px !important;
  line-height: 1.6 !important;
  color: var(--red-deep) !important;
  word-break: break-word;
}

.page-faq .faq-help__note {
  margin: 26px 0 0;
  max-width: 42em;
  font-size: 14px;
  line-height: 1.78;
  color: var(--cool-gray);
}

.page-faq .faq-help__note a {
  color: var(--red-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (min-width: 760px) {
  .page-faq .helpgrid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .steprail__link,
  .page-faq .faq-accordion .acc__btn::after {
    transition: none;
  }
}
</PAGE_CSS>