.page-faq {
  --faq-cut: 14px;
  --faq-cut-sm: 8px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(20px, 3.5vw, 44px);
  padding-bottom: clamp(28px, 5vw, 64px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 26px;
  margin-top: clamp(16px, 2.5vw, 28px);
}

.page-faq .faq-hero h1 {
  max-width: 20ch;
  margin-top: 10px;
}

.page-faq .faq-hero__lead .prose {
  margin-top: 16px;
  max-width: 34em;
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__quick a {
  display: inline-block;
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--black);
  text-decoration: none;
  background: var(--paper-2);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut-sm)), calc(100% - var(--faq-cut-sm)) 100%, 0 100%);
  transition: background var(--step) var(--ease), color var(--step) var(--ease);
}

.page-faq .faq-hero__quick a:hover,
.page-faq .faq-hero__quick a:focus-visible {
  background: var(--orange-soft);
  color: var(--ink);
}

.page-faq .faq-hero__quick a:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.page-faq .faq-hero__meta {
  padding: clamp(20px, 3vw, 28px);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--line-invert);
}

.page-faq .faq-stats__num {
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-stats__label {
  font-size: 13px;
  color: var(--mist);
  opacity: 0.82;
}

.page-faq .faq-hero__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-invert);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  opacity: 0.82;
}

.page-faq .faq-hero__media {
  margin-top: clamp(24px, 4vw, 44px);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 3;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }
}

/* ---------- 问答与术语双栏 ---------- */
.page-faq .faq-grid {
  display: grid;
  gap: 36px;
}

.page-faq .faq-group {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 6px;
  font-size: clamp(18px, 2.1vw, 22px);
  letter-spacing: -0.01em;
}

.page-faq .faq-list + .faq-group {
  margin-top: clamp(36px, 5vw, 58px);
}

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

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

.page-faq .faq-q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--orange);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--step) var(--ease);
}

.page-faq .faq-q[open]::before {
  transform: scaleY(1);
}

.page-faq .faq-q__summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 42px 16px 16px;
  cursor: pointer;
  list-style: none;
  transition: background var(--step) var(--ease);
}

.page-faq .faq-q__summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-q__summary:hover {
  background: var(--paper-2);
}

.page-faq .faq-q__summary:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.page-faq .faq-q__summary::after {
  content: "+";
  position: absolute;
  right: 14px;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--gray);
  transition: color var(--step) var(--ease);
}

.page-faq .faq-q[open] .faq-q__summary::after {
  content: "–";
  color: var(--orange);
}

.page-faq .faq-q__idx {
  flex: none;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-faq .faq-q__text {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--black);
}

.page-faq .faq-q__body {
  padding: 2px 16px 20px 16px;
}

.page-faq .faq-steps {
  counter-reset: faqstep;
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 30px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--black);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep);
  position: absolute;
  left: 0;
  top: 4px;
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink);
  background: var(--orange-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
}

.page-faq .faq-steps a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--orange);
  text-underline-offset: 3px;
}

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

.page-faq .faq-steps a:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

@media (min-width: 620px) {
  .page-faq .faq-q__body {
    padding: 2px 24px 22px 52px;
  }
}

/* 术语侧栏 */
.page-faq .faq-terms {
  padding: clamp(18px, 2.6vw, 24px);
}

.page-faq .faq-terms__list {
  display: grid;
  gap: 2px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-terms__link {
  display: block;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  text-decoration: none;
  transition: border-color var(--step) var(--ease), background var(--step) var(--ease);
}

.page-faq .faq-terms__link:hover,
.page-faq .faq-terms__link:focus-visible {
  background: var(--paper);
  border-left-color: var(--orange);
}

.page-faq .faq-terms__link:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.page-faq .faq-terms__key {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-terms__val {
  display: block;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--gray);
}

.page-faq .faq-watch {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-watch__text {
  margin: 0 0 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}

.page-faq .faq-watch .star {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-terms__foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--gray);
}

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

.page-faq .faq-terms__foot a:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

@media (min-width: 980px) {
  .page-faq .faq-grid {
    grid-template-columns: minmax(0, 1fr) 306px;
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 92px;
  }
}

/* ---------- 数据横带 ---------- */
.page-faq .faq-band {
  padding-block: clamp(22px, 3vw, 34px);
}

.page-faq .faq-band__list {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 36px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.6;
}

.page-faq .faq-band__list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-band__list li::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--blue);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

.page-faq .faq-band__num {
  font-size: 17px;
  font-weight: 700;
  color: var(--orange);
}

/* ---------- 排查顺序 ---------- */
.page-faq .faq-fix__grid {
  display: grid;
  gap: 30px;
  align-items: start;
}

.page-faq .faq-fix h2 {
  margin-top: 10px;
  max-width: 24ch;
}

.page-faq .faq-fix__steps {
  counter-reset: fixstep;
  display: grid;
  gap: 18px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-fix__steps li {
  counter-increment: fixstep;
  position: relative;
  padding: 16px 18px 16px 62px;
  background: var(--paper-2);
  border-left: 3px solid var(--ink);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-fix__steps li::before {
  content: "0" counter(fixstep);
  position: absolute;
  left: 20px;
  top: 17px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .faq-fix__steps h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 800;
  color: var(--black);
}

.page-faq .faq-fix__steps p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--black);
}

.page-faq .faq-fix__media {
  max-width: 420px;
}

@media (min-width: 900px) {
  .page-faq .faq-fix__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
  }

  .page-faq .faq-fix__media {
    max-width: none;
    justify-self: end;
  }
}

/* ---------- 联系升级 ---------- */
.page-faq .faq-esc__grid {
  display: grid;
  gap: 16px;
}

.page-faq .faq-esc__card {
  padding: clamp(18px, 2.6vw, 24px);
}

.page-faq .faq-esc__value {
  margin: 12px 0 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
  word-break: break-word;
}

.page-faq .faq-esc__desc {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--black);
}

.page-faq .faq-esc__note {
  margin-top: clamp(22px, 3vw, 34px);
  padding-top: 20px;
  border-top: 2px solid var(--ink);
  max-width: 62em;
}

.page-faq .faq-esc__note p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--black);
}

.page-faq .faq-esc__note p:last-child {
  margin-bottom: 0;
  color: var(--gray);
  font-size: 13px;
}

@media (min-width: 780px) {
  .page-faq .faq-esc__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q::before,
  .page-faq .faq-q__summary,
  .page-faq .faq-q__summary::after,
  .page-faq .faq-terms__link,
  .page-faq .faq-hero__quick a {
    transition: none;
  }
}
</main>
<<<END>>>