.page-faq {
  --faq-rail-w: 236px;
  --faq-gap: clamp(20px, 3.4vw, 44px);
  --faq-pad: clamp(15px, 2.4vw, 20px);
  --faq-line: rgba(42, 53, 64, 0.85);
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-sans);
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq .ob-container {
  min-width: 0;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(18px, 3vw, 34px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(42, 53, 64, 0.42) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 53, 64, 0.42) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 84%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 84%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -150px;
  width: 430px;
  height: 230px;
  background: var(--yellow);
  opacity: 0.07;
  transform: rotate(-14deg);
  pointer-events: none;
}

.page-faq .faq-hero .ob-container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  align-items: end;
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

.page-faq .faq-hero__lead .ob-h1 {
  margin-top: 10px;
}

.page-faq .faq-hero__aside {
  border: 1px solid var(--rule);
  border-top: 2px solid var(--yellow);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--carbon) 0%, rgba(20, 26, 32, 0.5) 100%);
  padding: var(--faq-pad);
  min-width: 0;
}

.page-faq .faq-aside__title {
  margin: 0 0 14px;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--yellow);
}

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

.page-faq .faq-aside__row {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--faq-line);
}

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

.page-faq .faq-aside__row dt {
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  color: var(--text-dim);
  line-height: 1.9;
}

.page-faq .faq-aside__row dd {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--mist);
  min-width: 0;
}

/* ---------- 斜向切割 ---------- */

.page-faq .faq-cut {
  height: 2px;
  margin: clamp(26px, 5vw, 54px) 0;
  background: linear-gradient(90deg, transparent 0%, var(--rule) 14%, var(--yellow) 58%, var(--signal) 88%, transparent 100%);
  transform: skewY(-0.9deg);
  transform-origin: left center;
}

/* ---------- 主体布局 ---------- */

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: var(--faq-gap);
  }
}

/* ---------- 分类滑轨 ---------- */

.page-faq .faq-rail {
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--carbon);
  padding: 16px;
  min-width: 0;
}

@media (min-width: 960px) {
  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 2px;
}

@media (min-width: 480px) and (max-width: 959px) {
  .page-faq .faq-rail__list {
    grid-template-columns: 1fr 1fr;
    gap: 2px 12px;
  }
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 4px 11px 14px;
  border-left: 2px solid var(--rule);
  color: var(--text-mid);
  text-decoration: none;
  font-size: var(--fs-sm);
  line-height: 1.4;
  transition: border-color var(--t-fast), color var(--t-fast), background-color var(--t-fast);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-left-color: var(--yellow);
  color: var(--white);
  background-color: rgba(255, 198, 26, 0.06);
}

.page-faq .faq-rail__no {
  color: var(--yellow);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-faq .faq-rail__foot {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-line);
  font-size: var(--fs-xs);
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 问答分组 ---------- */

.page-faq .faq-main {
  display: grid;
  gap: clamp(34px, 6vw, 62px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 96px;
  min-width: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding-bottom: 14px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group__no {
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  color: var(--yellow);
  padding-top: 5px;
  flex: 0 0 auto;
}

.page-faq .faq-group__title {
  margin: 0 0 6px;
}

.page-faq .faq-group__sub {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 配图 ---------- */

.page-faq .faq-figure {
  margin: 0 0 20px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--carbon);
}

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

/* ---------- 折叠问答 ---------- */

.page-faq .faq-q {
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--carbon);
  transition: background-color var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-q + .faq-q {
  margin-top: 10px;
}

.page-faq .faq-q:hover {
  border-color: #3b4a58;
}

.page-faq .faq-q[open] {
  background: var(--navy);
  border-color: #3b4a58;
}

.page-faq .faq-q > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--white);
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-q > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-q > summary::marker {
  content: "";
}

.page-faq .faq-q > summary:hover {
  color: var(--gold);
}

.page-faq .faq-q > summary:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: -2px;
}

.page-faq .faq-q[open] > summary {
  border-bottom-color: var(--faq-line);
}

.page-faq .faq-q > summary::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-left: auto;
  margin-top: 7px;
  border-right: 2px solid var(--yellow);
  border-bottom: 2px solid var(--yellow);
  transform: rotate(45deg);
  transition: transform var(--t-fold);
}

.page-faq .faq-q[open] > summary::after {
  transform: rotate(-135deg);
  margin-top: 12px;
}

.page-faq .faq-q__body {
  padding: 16px 16px 18px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-mid);
}

.page-faq .faq-q__body p {
  margin: 0 0 12px;
}

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

.page-faq .faq-q__body b,
.page-faq .faq-q__body strong {
  color: var(--mist);
  font-weight: 700;
}

.page-faq .faq-q__body p.faq-q__more {
  margin: 14px 0 0;
  font-size: var(--fs-sm);
}

/* ---------- 编号步骤 ---------- */

.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-steps:first-child {
  margin-top: 0;
}

.page-faq .faq-steps > li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 40px;
  font-size: 15.5px;
  line-height: 1.75;
  min-height: 24px;
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--ink);
  background: var(--yellow);
  border-radius: 2px;
  padding: 2px 6px;
}

/* ---------- 联系卡片 ---------- */

.page-faq .faq-group--last .faq-contact {
  margin-top: 18px;
}

.page-faq .faq-contact {
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--carbon) 0%, var(--navy) 100%);
  padding: clamp(18px, 3vw, 26px);
}

.page-faq .faq-contact__title {
  margin: 0 0 16px;
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--yellow);
}

.page-faq .faq-contact__rows {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "key btn"
    "val btn";
  align-items: center;
  gap: 6px 14px;
  padding: 12px 14px;
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: rgba(10, 13, 16, 0.55);
  min-width: 0;
}

@media (min-width: 620px) {
  .page-faq .faq-contact__row {
    grid-template-columns: 88px minmax(0, 1fr) auto;
    grid-template-areas: "key val btn";
    gap: 14px;
  }
}

.page-faq .faq-contact__key {
  grid-area: key;
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.page-faq .faq-contact__val {
  grid-area: val;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  word-break: break-all;
}

.page-faq .faq-contact__row .ob-copy {
  grid-area: btn;
  justify-self: end;
  min-width: 68px;
  flex: 0 0 auto;
}

.page-faq .faq-contact__foot {
  margin: 16px 0 0;
  font-size: var(--fs-xs);
  line-height: 1.9;
  color: var(--text-dim);
}

.page-faq .faq-contact__foot .ob-link {
  color: var(--mist);
}

/* ---------- 降级动效 ---------- */

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