.page-faq {
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}

.page-faq .faq-top {
  padding-top: clamp(24px, 4vw, 46px);
  padding-bottom: clamp(18px, 3vw, 28px);
}

.page-faq .crumbs {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero {
  display: grid;
  gap: clamp(12px, 2vw, 18px);
  max-width: 60rem;
}

.page-faq .faq-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clay);
}

.page-faq .faq-kicker--dark {
  color: var(--night);
}

.page-faq .faq-kicker--light {
  color: var(--sand);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-size: var(--fs-1);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--night);
  text-wrap: balance;
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 34em;
  font-size: var(--fs-5);
  line-height: 1.9;
  color: var(--ink-soft);
}

/* 三步排查带 */
.page-faq .faq-steps {
  background: var(--sand-pale);
  border-top: 1px solid var(--line-sand);
  border-bottom: 1px solid var(--line-sand);
  padding-block: clamp(28px, 5vw, 52px);
  position: relative;
  isolation: isolate;
}

.page-faq .faq-steps::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: radial-gradient(var(--line-sand) 1px, transparent 1px);
  background-size: 14px 14px;
  opacity: 0.55;
}

.page-faq .faq-steps__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-faq .faq-steps__head h2 {
  margin: 0;
  font-size: var(--fs-3);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--night);
}

.page-faq .steps-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 32px);
}

.page-faq .step {
  border-top: 2px solid var(--sand);
  padding-top: clamp(12px, 2vw, 18px);
}

.page-faq .step__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: clamp(46px, 9vw, 72px);
  font-weight: 700;
  line-height: 0.84;
  letter-spacing: -0.04em;
  color: var(--sand);
  font-variant-numeric: tabular-nums;
}

.page-faq .step__title {
  margin: 0 0 8px;
  font-size: var(--fs-5);
  font-weight: 900;
  color: var(--night);
  line-height: 1.5;
}

.page-faq .step__text {
  margin: 0;
  font-size: var(--fs-5);
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 26em;
}

/* 图片 */
.page-faq .faq-figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

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

.page-faq .faq-figure--device {
  margin-top: clamp(24px, 4vw, 38px);
  border-left: 4px solid var(--sand);
}

.page-faq .faq-figure .media__caption {
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  padding-top: 10px;
}

/* 分类跳转 */
.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding-bottom: clamp(20px, 3vw, 28px);
  border-bottom: 1px dashed var(--line-sand);
}

.page-faq .faq-jump__link {
  display: inline-block;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--night);
  border: 1px solid var(--line);
  border-radius: var(--pill);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  background: var(--night);
  border-color: var(--night);
  color: var(--paper);
}

/* 分类区块 */
.page-faq .faq-cat {
  padding-block: clamp(30px, 5vw, 56px);
  border-bottom: 1px dashed var(--line-sand);
}

.page-faq .faq-cat__head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  column-gap: clamp(10px, 2vw, 18px);
  row-gap: 6px;
  margin-bottom: clamp(16px, 3vw, 26px);
}

.page-faq .faq-cat__num {
  grid-row: 1 / span 2;
  align-self: start;
  padding: 6px 9px;
  background: var(--sand);
  color: var(--night);
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  line-height: 1;
  letter-spacing: 0.12em;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-cat__title {
  margin: 0;
  font-size: var(--fs-3);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--night);
}

.page-faq .faq-cat__desc {
  grid-column: 2;
  margin: 0;
  font-size: var(--fs-5);
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 32em;
}

/* 问答列表 */
.page-faq .faq-list {
  columns: 1;
  column-gap: clamp(24px, 4vw, 48px);
}

.page-faq .qa {
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
  border-top: 1px solid var(--line);
}

.page-faq .qa summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 4px 15px 14px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-5);
  font-weight: 700;
  line-height: 1.6;
  color: var(--night);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .qa summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  bottom: 13px;
  width: 0;
  background: var(--clay);
  transition: width var(--dur) var(--ease);
}

.page-faq .qa summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 21px;
  line-height: 1.1;
  color: var(--sand);
  transition: transform var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .qa[open] summary::before {
  width: 4px;
}

.page-faq .qa[open] summary::after {
  transform: rotate(45deg);
  color: var(--clay);
}

.page-faq .qa summary:hover,
.page-faq .qa summary:focus-visible {
  color: var(--deep);
}

.page-faq .qa__q {
  flex: 1;
}

.page-faq .qa__a {
  padding: 0 4px 18px 14px;
  font-size: var(--fs-5);
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-faq .qa__a p {
  margin: 0 0 8px;
}

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

.page-faq .qa__link {
  color: var(--deep);
  text-decoration: none;
  border-bottom: 1px solid var(--sand);
  font-weight: 700;
}

.page-faq .qa__link:hover,
.page-faq .qa__link:focus-visible {
  color: var(--clay);
}

/* 收尾求助区 */
.page-faq .faq-help {
  margin-block: clamp(36px, 6vw, 72px) clamp(40px, 6vw, 72px);
  padding: clamp(26px, 5vw, 52px);
  background: var(--night);
  color: var(--on-night);
  border-top: 6px solid var(--sand);
}

.page-faq .faq-help h2 {
  margin: 10px 0 clamp(20px, 3vw, 30px);
  font-size: var(--fs-3);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
  max-width: 22em;
}

.page-faq .help-list {
  list-style: none;
  margin: 0 0 clamp(18px, 3vw, 26px);
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .help-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  padding-top: 12px;
  border-top: 1px solid rgba(251, 247, 239, 0.22);
  font-size: var(--fs-5);
  line-height: 1.85;
  color: var(--on-night);
}

.page-faq .help-list strong {
  color: var(--sand);
  font-weight: 900;
}

.page-faq .help-list__num {
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: 0.1em;
  color: var(--sand);
  font-variant-numeric: tabular-nums;
}

.page-faq .help-text {
  margin: 0 0 clamp(20px, 3vw, 28px);
  max-width: 34em;
  font-size: var(--fs-5);
  line-height: 1.9;
  color: var(--on-night);
}

.page-faq .help-mail {
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: 0.04em;
  color: var(--paper);
  background: rgba(217, 164, 65, 0.24);
  padding: 2px 6px;
  white-space: nowrap;
}

.page-faq .help-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

.page-faq .help-actions .btn {
  text-decoration: none;
}

.page-faq .help-actions .btn--ghost {
  color: var(--paper);
  border-color: rgba(251, 247, 239, 0.45);
}

@media (min-width: 760px) {
  .page-faq .steps-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(18px, 3vw, 40px);
  }

  .page-faq .step__num {
    margin-left: -4px;
  }

  .page-faq .help-list {
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(16px, 2.5vw, 28px);
  }

  .page-faq .help-list li {
    grid-template-columns: 1fr;
    align-content: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-list {
    columns: 2;
  }

  .page-faq .faq-figure--device {
    max-width: 72%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa summary::before,
  .page-faq .qa summary::after,
  .page-faq .faq-jump__link {
    transition: none;
  }
}