.page-faq {
  --faq-r: 6px;
  --faq-gap: clamp(14px, 2.2vw, 26px);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 4.6vw, 62px) 0 clamp(30px, 4.6vw, 68px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% 0;
  background:
    radial-gradient(680px 320px at 10% 4%, rgba(0, 231, 193, .11), transparent 68%),
    radial-gradient(540px 300px at 94% 30%, rgba(255, 106, 43, .10), transparent 70%);
  pointer-events: none;
}

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

.page-faq .faq-hero .crumbs {
  margin-bottom: clamp(20px, 3vw, 34px);
  font-size: 13px;
  letter-spacing: .04em;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: end;
}

.page-faq .faq-hero h1 {
  font-family: var(--f-display);
  font-size: clamp(30px, 6.2vw, 62px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: .01em;
  color: var(--near);
  margin: 12px 0 clamp(14px, 2vw, 20px);
  max-width: 20ch;
}

.page-faq .faq-hero__sub {
  margin: 0 0 clamp(20px, 3vw, 30px);
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.78;
  color: var(--cool);
}

.page-faq .faq-hero__sub .mono {
  color: var(--cyan);
  font-size: 1.05em;
}

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

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--faq-r);
  overflow: hidden;
}

.page-faq .faq-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(14px, 1.8vw, 22px);
  background: linear-gradient(170deg, rgba(20, 36, 58, .96), rgba(12, 21, 36, .96));
}

.page-faq .faq-hero__stats .stat__num {
  font-family: var(--f-mono);
  font-size: clamp(22px, 2.8vw, 36px);
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--cyan);
}

.page-faq .faq-hero__stats .stat--orange .stat__num {
  color: var(--orange);
}

.page-faq .faq-hero__stats .stat__lab {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cool);
}

/* ---------- 分类筛选 ---------- */
.page-faq .faq-filterzone {
  padding: clamp(32px, 5vw, 62px) 0 clamp(6px, 1.5vw, 14px);
}

.page-faq .faq-lead {
  margin: 0 0 clamp(20px, 3vw, 32px);
  max-width: 68ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--cool);
}

.page-faq .faq-cats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: clamp(14px, 2vw, 22px) 0 clamp(18px, 2.6vw, 30px);
}

.page-faq .faq-cats__bg {
  position: absolute;
  inset: -6% -3%;
  z-index: 0;
  opacity: .14;
  pointer-events: none;
  border-radius: var(--faq-r);
  overflow: hidden;
}

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

.page-faq .faq-cat {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  min-height: 122px;
  padding: clamp(14px, 1.8vw, 20px);
  border: 1px solid var(--line);
  border-radius: var(--faq-r);
  background: linear-gradient(158deg, rgba(20, 36, 58, .9), rgba(12, 21, 36, .94));
  color: var(--near);
  text-align: left;
  cursor: pointer;
  font-family: var(--f-body);
  transition: border-color .18s var(--ease), background .18s var(--ease), transform .18s var(--ease);
}

.page-faq .faq-cat:hover {
  border-color: rgba(0, 231, 193, .6);
  transform: translateY(-2px);
}

.page-faq .faq-cat:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-cat.is-on {
  border-color: var(--cyan);
  background: linear-gradient(158deg, rgba(0, 231, 193, .16), rgba(12, 21, 36, .96));
  box-shadow: inset 0 0 0 1px rgba(0, 231, 193, .32);
}

.page-faq .faq-cat__num {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--cool);
  transition: color .18s var(--ease);
}

.page-faq .faq-cat.is-on .faq-cat__num {
  color: var(--cyan);
}

.page-faq .faq-cat__name {
  font-family: var(--f-display);
  font-size: clamp(16px, 1.7vw, 23px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .05em;
}

.page-faq .faq-cat__meta {
  margin-top: auto;
  padding-top: 12px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cool);
}

.page-faq .faq-cat.is-on .faq-cat__meta {
  color: var(--orange);
}

.page-faq .faq-filters__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-faq .filters__count {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cool);
}

/* ---------- 问答列表 ---------- */
.page-faq .faq-answers {
  padding: clamp(28px, 4.6vw, 60px) 0;
}

.page-faq .faq-qa {
  margin-top: clamp(16px, 2.4vw, 28px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  transition: background .2s var(--ease);
}

.page-faq .faq-item:hover {
  background: rgba(20, 36, 58, .42);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) 20px;
  align-items: start;
  gap: 12px;
  width: 100%;
  padding: clamp(16px, 2.2vw, 24px) clamp(6px, 1.2vw, 16px);
  background: transparent;
  border: 0;
  color: var(--near);
  text-align: left;
  cursor: pointer;
  font-family: var(--f-body);
  font-size: clamp(15px, 1.5vw, 19px);
  line-height: 1.5;
  transition: color .18s var(--ease);
}

.page-faq .faq-q__num {
  padding-top: 4px;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--cool);
  transition: color .18s var(--ease);
}

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

.page-faq .faq-q .qa__sign {
  justify-self: end;
  align-self: center;
  color: var(--cyan);
}

.page-faq .faq-q:hover .faq-q__text {
  color: var(--cyan);
}

.page-faq .faq-q[aria-expanded="true"] {
  color: var(--cyan);
}

.page-faq .faq-q[aria-expanded="true"] .faq-q__num {
  color: var(--cyan);
}

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

.page-faq .faq-a {
  padding: 0 clamp(6px, 1.2vw, 16px) clamp(18px, 2.4vw, 28px) clamp(6px, 1.2vw, 16px);
  animation: faq-fade .26s var(--ease) both;
}

@keyframes faq-fade {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 72ch;
  font-size: clamp(14.5px, 1.35vw, 16.5px);
  line-height: 1.82;
  color: var(--cool);
}

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 231, 193, .42);
}

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

/* ---------- 下载排查卡 ---------- */
.page-faq .faq-dl {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.6vw, 30px);
  align-items: center;
  margin-top: clamp(22px, 3.2vw, 38px);
  padding: clamp(16px, 2.4vw, 28px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  border-radius: var(--faq-r);
  background: linear-gradient(148deg, rgba(12, 21, 36, .96), rgba(6, 11, 20, .98));
}

.page-faq .faq-dl__fig {
  border-radius: var(--faq-r);
  overflow: hidden;
}

.page-faq .faq-dl__body h3 {
  margin: 10px 0 14px;
  font-family: var(--f-display);
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: .03em;
  color: var(--near);
}

.page-faq .faq-dl__steps {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-faq .faq-dl__steps li {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 10px;
  font-size: clamp(14px, 1.35vw, 16px);
  line-height: 1.74;
  color: var(--cool);
}

.page-faq .faq-dl__steps .mono {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--orange);
  padding-top: 4px;
}

/* ---------- 更新机制 ---------- */
.page-faq .faq-grow {
  padding: clamp(30px, 4.6vw, 62px) 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-grow__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  margin-top: clamp(16px, 2.4vw, 28px);
}

.page-faq .faq-grow__main p {
  margin: 0 0 16px;
  max-width: 66ch;
  font-size: clamp(15px, 1.45vw, 17px);
  line-height: 1.82;
  color: var(--cool);
}

.page-faq .faq-grow__main a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 231, 193, .42);
}

.page-faq .faq-grow__side {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-faq .faq-grow__card {
  padding: clamp(14px, 1.8vw, 20px);
  border: 1px solid var(--line);
  border-radius: var(--faq-r);
  background: linear-gradient(160deg, rgba(20, 36, 58, .86), rgba(12, 21, 36, .92));
}

.page-faq .faq-grow__card--orange {
  border-color: rgba(255, 106, 43, .5);
  background: linear-gradient(160deg, rgba(255, 106, 43, .12), rgba(12, 21, 36, .94));
}

.page-faq .faq-grow__card .eyebrow {
  display: block;
  margin-bottom: 10px;
}

.page-faq .faq-grow__card--orange .eyebrow {
  color: var(--orange);
}

.page-faq .faq-grow__card p {
  margin: 0;
  font-size: clamp(14px, 1.3vw, 15.5px);
  line-height: 1.76;
  color: var(--cool);
}

.page-faq .faq-grow__card a {
  color: var(--near);
  text-decoration: none;
  border-bottom: 1px solid rgba(233, 241, 250, .38);
}

/* ---------- 联系卡 ---------- */
.page-faq .faq-contact {
  padding: 0 0 clamp(40px, 6vw, 84px);
}

.page-faq .faq-contact__card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: center;
  padding: clamp(22px, 3vw, 40px) clamp(18px, 2.6vw, 38px);
  border: 1px solid var(--line);
  border-radius: var(--faq-r);
  background:
    linear-gradient(120deg, rgba(12, 21, 36, .96), rgba(20, 36, 58, .9)),
    radial-gradient(520px 220px at 86% 0%, rgba(255, 106, 43, .18), transparent 70%);
  box-shadow: 0 0 0 1px rgba(255, 106, 43, .28), 0 22px 60px -40px rgba(255, 106, 43, .6);
}

.page-faq .faq-contact__lead h2 {
  margin: 10px 0 12px;
  font-family: var(--f-display);
  font-size: clamp(24px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: .03em;
  color: var(--near);
}

.page-faq .faq-contact__lead p {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(14.5px, 1.4vw, 16.5px);
  line-height: 1.8;
  color: var(--cool);
}

.page-faq .faq-contact__side {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  padding: clamp(14px, 1.8vw, 20px);
  border: 1px solid var(--line);
  border-radius: var(--faq-r);
  background: rgba(6, 11, 20, .72);
}

.page-faq .faq-contact__mail {
  margin: 0;
  font-size: clamp(13px, 1.3vw, 15px);
  letter-spacing: .02em;
  color: var(--cyan);
  word-break: break-all;
}

.page-faq .faq-contact__note {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cool);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-grow__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }
  .page-faq .faq-contact__card {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

  .page-faq .faq-cats {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 16px;
    align-items: start;
  }

  .page-faq .faq-cat {
    min-height: 0;
  }

  .page-faq .faq-cat--1 {
    grid-column: 1 / span 4;
    min-height: 176px;
  }

  .page-faq .faq-cat--2 {
    grid-column: 5 / span 3;
    margin-top: 46px;
    min-height: 152px;
  }

  .page-faq .faq-cat--3 {
    grid-column: 8 / span 2;
    margin-top: 92px;
    min-height: 132px;
  }

  .page-faq .faq-cat--4 {
    grid-column: 10 / span 3;
    margin-top: 24px;
    min-height: 160px;
  }

  .page-faq .faq-a {
    padding-left: 74px;
    padding-right: 18%;
  }

  .page-faq .faq-dl {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-filterzone .faq-cats {
    padding-bottom: clamp(48px, 5vw, 66px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-a {
    animation: none;
  }
  .page-faq .faq-cat:hover {
    transform: none;
  }
}