.page-faq {
  --faq-sticky-top: 64px;
  --faq-gap: clamp(20px, 3vw, 36px);
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-intro {
  position: relative;
  overflow: hidden;
  padding: 122px 0 48px;
  color: var(--cream);
  background:
    radial-gradient(72% 58% at 86% 10%, rgba(240, 138, 36, .40), transparent 62%),
    linear-gradient(155deg, #26313B 0%, var(--slate) 42%, var(--brown) 100%);
}

.page-faq .faq-intro::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--amber), var(--orange), transparent);
  opacity: .7;
  pointer-events: none;
}

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

.page-faq .faq-intro .breadcrumbs__link,
.page-faq .faq-intro .breadcrumbs__item {
  color: var(--cream-mute);
}

.page-faq .faq-intro .breadcrumbs__link:hover {
  color: var(--amber);
}

.page-faq .faq-intro .breadcrumbs__sep {
  color: var(--copper);
}

.page-faq .faq-intro__grid {
  display: grid;
  gap: 26px;
  margin-top: 26px;
}

.page-faq .faq-intro__kicker {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-faq .faq-intro__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5vw, 62px);
  line-height: 1.18;
  letter-spacing: .01em;
  color: var(--cream);
}

.page-faq .faq-intro__lead {
  margin: 0;
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.85;
  color: rgba(251, 246, 238, .86);
  max-width: 56ch;
}

.page-faq .faq-intro__stats {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: 24px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line-light);
}

.page-faq .faq-intro__stats li {
  flex: 1 1 88px;
  padding: 0 16px;
  border-right: 1px solid var(--line-light);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-intro__stats li:first-child {
  padding-left: 0;
}

.page-faq .faq-intro__stats li:last-child {
  border-right: 0;
}

.page-faq .faq-intro__num {
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--amber);
}

.page-faq .faq-intro__unit {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cream-mute);
}

/* ---------- 三步吸顶条 ---------- */
.page-faq .faq-steps {
  position: sticky;
  top: var(--faq-sticky-top);
  z-index: 30;
  background: rgba(251, 246, 238, .95);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-steps__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  padding-top: 10px;
  padding-bottom: 10px;
}

.page-faq .faq-steps__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--ink-mute);
  text-transform: uppercase;
}

.page-faq .faq-steps__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex: 1 1 auto;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-steps__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink-soft);
  font-size: 14px;
  text-decoration: none;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

.page-faq .faq-steps__link .num {
  font-size: 12px;
  color: var(--copper);
}

.page-faq .faq-steps__link:hover,
.page-faq .faq-steps__link:focus-visible,
.page-faq .faq-steps__link[aria-current="true"] {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--cream);
  outline: none;
}

.page-faq .faq-steps__link:hover .num,
.page-faq .faq-steps__link:focus-visible .num,
.page-faq .faq-steps__link[aria-current="true"] .num {
  color: var(--cream);
}

/* ---------- 步骤区块 ---------- */
.page-faq .faq-step {
  padding: clamp(42px, 6vw, 76px) 0;
  scroll-margin-top: 122px;
}

.page-faq .faq-step--sand {
  background: var(--sand);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-step__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 12px 20px;
  padding-bottom: 18px;
  margin-bottom: clamp(24px, 3.4vw, 40px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-step__num {
  margin: 0;
  padding-top: 6px;
  font-size: 15px;
  color: var(--orange);
}

.page-faq .faq-step__heading {
  flex: 1 1 320px;
  min-width: 0;
}

.page-faq .faq-step__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.32;
  color: var(--ink);
}

.page-faq .faq-step__lead {
  margin: 0;
  font-size: clamp(15px, 1.15vw, 17px);
  color: var(--ink-soft);
  max-width: 62ch;
}

.page-faq .faq-step__copy {
  flex: 0 0 auto;
  align-self: center;
}

.page-faq .faq-step__split {
  display: grid;
  gap: var(--faq-gap);
}

/* ---------- 设备对照 ---------- */
.page-faq .faq-devices {
  display: grid;
  gap: 16px;
}

.page-faq .faq-device {
  position: relative;
  padding: 20px 20px 22px 24px;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-device::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  background: linear-gradient(180deg, var(--amber), var(--orange));
}

.page-faq .faq-device__tag {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--copper);
}

.page-faq .faq-device__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .faq-device__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-device__list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-faq .faq-device__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .82em;
  width: 8px;
  height: 1px;
  background: var(--copper);
}

.page-faq .faq-callout {
  margin: 18px 0 0;
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  background: rgba(46, 125, 99, .08);
  border-left: 3px solid var(--jade);
  border-radius: var(--radius);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.page-faq .faq-figure--wide {
  margin-bottom: var(--faq-gap);
}

.page-faq .faq-figure .media-frame__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-mute);
}

/* ---------- 第二步 ---------- */
.page-faq .faq-actions {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-action {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 20px;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-action__no {
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  padding-top: 3px;
  color: var(--copper);
}

.page-faq .faq-action__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-action__text strong {
  color: var(--ink);
  font-weight: 700;
}

.page-faq .faq-side-note {
  padding: 20px;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-side-note__label {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--brown);
}

.page-faq .faq-side-note__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-side-note__link-wrap {
  margin: 14px 0 0;
}

.page-faq .faq-side-note__link {
  display: inline-block;
  font-size: 14px;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}

.page-faq .faq-side-note__link:hover {
  color: var(--brown);
}

/* ---------- 第三步 · 字段解剖 ---------- */
.page-faq .faq-compare {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-anatomy {
  display: block;
  width: 100%;
  height: auto;
  background: rgba(242, 231, 214, .55);
  border-radius: var(--radius);
}

.page-faq .faq-anatomy text {
  font-family: var(--font-body);
}

.page-faq .faq-anatomy__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  fill: var(--copper);
}

.page-faq .faq-anatomy__name {
  font-size: 15px;
  fill: var(--ink);
}

.page-faq .faq-anatomy__hint {
  font-size: 12px;
  fill: rgba(28, 25, 23, .52);
}

.page-faq .faq-compare__notes p {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

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

.page-faq .faq-compare__sub {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
  padding-left: 12px;
  border-left: 3px solid var(--copper);
}

/* ---------- 企业问答 ---------- */
.page-faq .faq-qa {
  display: grid;
  gap: 12px;
}

.page-faq .faq-qa__item {
  position: relative;
  padding: 4px 20px;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: box-shadow .24s ease;
}

.page-faq .faq-qa__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 3px;
  background: transparent;
  transition: background-color .24s ease;
}

.page-faq .faq-qa__item[open] {
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-qa__item[open]::before {
  background: var(--copper);
}

.page-faq .faq-qa__q {
  cursor: pointer;
  padding: 16px 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
  list-style: none;
}

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

.page-faq .faq-qa__q::after {
  content: "展开";
  float: right;
  margin-left: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--orange);
}

.page-faq .faq-qa__item[open] .faq-qa__q::after {
  content: "收起";
  color: var(--brown);
}

.page-faq .faq-qa__a {
  padding: 0 0 18px;
}

.page-faq .faq-qa__a p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .faq-qa__a a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-faq .faq-qa__a a:hover {
  color: var(--brown);
}

/* ---------- 注意事项 ---------- */
.page-faq .faq-notes {
  display: grid;
  border-top: 1px solid var(--line);
}

.page-faq .faq-note {
  display: grid;
  gap: 6px 26px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-note__key {
  margin: 0;
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--copper);
}

.page-faq .faq-note__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-next {
  padding-bottom: clamp(48px, 7vw, 92px);
}

.page-faq .faq-next__card {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 4.4vw, 54px);
  background: var(--slate);
  color: var(--cream);
  border-radius: var(--radius);
}

.page-faq .faq-next__card::after {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -62%;
  width: min(520px, 72vw);
  aspect-ratio: 1;
  background: radial-gradient(circle at 50% 50%, rgba(240, 138, 36, .42), transparent 66%);
  pointer-events: none;
}

.page-faq .faq-next__card > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-next__index {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--amber);
}

.page-faq .faq-next__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.34;
  color: var(--cream);
}

.page-faq .faq-next__text {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.85;
  color: rgba(251, 246, 238, .86);
}

.page-faq .faq-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-next__ghost {
  color: var(--cream);
  border-color: rgba(251, 246, 238, .45);
}

.page-faq .faq-next__ghost:hover {
  color: var(--cream);
  border-color: var(--amber);
  background: rgba(255, 203, 102, .14);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-devices {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-note {
    grid-template-columns: 180px minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-intro {
    padding: 146px 0 62px;
  }

  .page-faq .faq-intro__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: end;
  }

  .page-faq .faq-intro__stats li {
    padding: 0 22px;
  }

  .page-faq .faq-step__split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-faq .faq-compare {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }

  .page-faq .faq-step__side {
    position: sticky;
    top: calc(var(--faq-sticky-top) + 72px);
  }
}

@media (max-width: 639px) {
  .page-faq .faq-steps__label {
    display: none;
  }

  .page-faq .faq-steps__list {
    flex: 1 1 100%;
  }

  .page-faq .faq-steps__item {
    flex: 1 1 0;
    min-width: 0;
  }

  .page-faq .faq-steps__link {
    width: 100%;
    justify-content: center;
    padding: 6px 8px;
    font-size: 13px;
  }

  .page-faq .faq-step__head {
    gap: 8px 14px;
  }

  .page-faq .faq-step__num {
    padding-top: 3px;
  }

  .page-faq .faq-step__copy {
    flex: 1 1 100%;
    justify-content: center;
  }

  .page-faq .faq-intro__stats li {
    flex: 1 1 72px;
    padding: 0 12px;
  }

  .page-faq .faq-qa__q::after {
    float: none;
    display: block;
    margin: 8px 0 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-steps,
  .page-faq .faq-qa__item,
  .page-faq .faq-qa__item::before,
  .page-faq .faq-steps__link {
    transition: none;
  }
}