.page-faq {
  --faq-gap: clamp(14px, 2.2vw, 22px);
  --faq-section-gap: clamp(48px, 7vw, 92px);
  --faq-line: rgba(11, 27, 43, 0.14);
  --faq-line-dark: rgba(250, 247, 240, 0.16);
  background: var(--warm);
  color: var(--text);
  overflow-x: hidden;
}

.page-faq [id] {
  scroll-margin-top: 128px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.5vw, 52px) 0 clamp(40px, 6vw, 78px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -38%;
  right: -12%;
  width: 62%;
  height: 176%;
  background:
    linear-gradient(108deg, rgba(255, 77, 46, 0.15), rgba(255, 77, 46, 0) 62%),
    linear-gradient(202deg, rgba(42, 245, 214, 0.08), rgba(42, 245, 214, 0) 44%);
  transform: rotate(-9deg);
  pointer-events: none;
  z-index: 0;
}

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

.page-faq .faq-hero__lead {
  max-width: 640px;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(44px, 8.6vw, 88px);
  font-weight: 800;
  line-height: 0.94;
  letter-spacing: -0.035em;
  color: var(--chalk);
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 54ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--on-dark);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--faq-line-dark);
}

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

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--flame);
}

.page-faq .faq-stat__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-dark-dim);
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .faq-hero__figure .figure__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .faq-hero__figure .figure__cap {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--on-dark-dim);
}

/* ---------- 分类导航 ---------- */

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

.page-faq .faq-nav__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 13px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  background: var(--chalk);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-nav__link::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: none;
  border-radius: 50%;
  background: var(--concrete);
  transition: background 0.2s ease;
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  border-color: var(--flame);
  color: var(--flame);
  transform: translateY(-1px);
}

.page-faq .faq-nav__link:hover::before,
.page-faq .faq-nav__link:focus-visible::before {
  background: var(--flame);
}

/* ---------- 章节通用 ---------- */

.page-faq .faq-section {
  padding: var(--faq-section-gap) 0;
}

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

.page-faq .faq-section__head {
  display: flex;
  align-items: flex-start;
  gap: clamp(16px, 2.4vw, 30px);
  margin-bottom: clamp(22px, 3.4vw, 36px);
}

.page-faq .faq-sec-num {
  flex: none;
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 42px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--flame);
  padding-bottom: 9px;
  border-bottom: 2px solid var(--flame);
}

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

.page-faq .faq-section__title {
  margin: 8px 0 0;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-section__lede {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-mid);
}

/* ---------- 价格档位 ---------- */

.page-faq .faq-tiers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-bottom: clamp(22px, 3.4vw, 34px);
  padding: 1px;
  background: rgba(250, 247, 240, 0.18);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-tier {
  position: relative;
  padding: 18px 18px 20px;
  background: var(--deep);
}

.page-faq .faq-tier::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 32%;
  background: var(--flame);
}

.page-faq .faq-tier__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--on-dark-dim);
}

.page-faq .faq-tier__name {
  margin: 10px 0 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--chalk);
}

.page-faq .faq-tier__range {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--flame);
}

.page-faq .faq-tier__range span {
  margin-left: 4px;
  font-size: 12px;
  font-weight: 400;
  color: var(--on-dark-dim);
}

.page-faq .faq-tier__fit {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--faq-line-dark);
  font-size: 13px;
  line-height: 1.6;
  color: var(--on-dark);
}

/* ---------- 折叠问答 ---------- */

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

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line);
  transition: background 0.22s ease, box-shadow 0.22s ease;
}

.page-faq .faq-item[open] {
  background: var(--paper);
  box-shadow: inset 3px 0 0 var(--flame);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 18px;
  align-items: start;
  column-gap: 12px;
  padding: 18px 16px 18px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--neon-ink);
  outline-offset: -2px;
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--concrete);
  transition: color 0.2s ease;
}

.page-faq .faq-item[open] .faq-item__num {
  color: var(--flame);
}

.page-faq .faq-item__text {
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: -0.005em;
  color: var(--text);
}

.page-faq .faq-item__mark {
  position: relative;
  align-self: center;
  width: 14px;
  height: 14px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--neon-ink);
  transition: transform 0.24s ease, opacity 0.24s ease;
}

.page-faq .faq-item__mark::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  top: 0;
  left: 6px;
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__a {
  padding: 0 20px 22px 74px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-mid);
}

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

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

.page-faq .faq-item__a a {
  color: var(--flame);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--ember);
}

/* ---------- 品类标识 ---------- */

.page-faq .faq-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-cat {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border: 1px solid var(--faq-line);
  background: var(--chalk);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text);
}

.page-faq .faq-cat__mark {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 1px;
  background: var(--flame);
}

.page-faq .faq-cat:nth-child(2) .faq-cat__mark {
  background: var(--ember);
}

.page-faq .faq-cat:nth-child(3) .faq-cat__mark {
  background: var(--navy);
}

.page-faq .faq-cat:nth-child(4) .faq-cat__mark {
  background: var(--deep);
}

.page-faq .faq-cat:nth-child(5) .faq-cat__mark {
  background: var(--concrete);
}

.page-faq .faq-cat:nth-child(6) .faq-cat__mark {
  background: var(--neon-ink);
}

/* ---------- 规格分栏 ---------- */

.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.6vw, 44px);
  align-items: start;
}

.page-faq .faq-split__figure {
  margin: 0;
}

.page-faq .faq-split__figure .figure__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .faq-split__figure .figure__cap {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-mid);
}

/* ---------- 联系区块（深底） ---------- */

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

.page-faq .faq-contact .faq-section__title {
  color: var(--chalk);
}

.page-faq .faq-contact .faq-section__lede {
  color: var(--on-dark);
}

.page-faq .faq-contact .faq-list {
  border-top-color: var(--faq-line-dark);
}

.page-faq .faq-contact .faq-item {
  border-bottom-color: var(--faq-line-dark);
}

.page-faq .faq-contact .faq-item[open] {
  background: rgba(250, 247, 240, 0.05);
}

.page-faq .faq-contact .faq-item__text {
  color: var(--chalk);
}

.page-faq .faq-contact .faq-item__num {
  color: var(--on-dark-dim);
}

.page-faq .faq-contact .faq-item[open] .faq-item__num {
  color: var(--flame);
}

.page-faq .faq-contact .faq-item__a {
  color: var(--on-dark);
}

.page-faq .faq-contact .faq-item__a a {
  color: var(--neon);
}

.page-faq .faq-contact .faq-item__a a:hover {
  color: var(--chalk);
}

.page-faq .faq-contact .faq-item__mark::before,
.page-faq .faq-contact .faq-item__mark::after {
  background: var(--neon);
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(24px, 3.4vw, 36px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--faq-line-dark);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-faq .faq-tiers {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-faq .faq-item__q {
    grid-template-columns: 54px minmax(0, 1fr) 18px;
    padding: 20px 20px 20px 22px;
  }

  .page-faq .faq-item__text {
    font-size: 17.5px;
  }

  .page-faq .faq-item__a {
    padding: 0 26px 24px 96px;
    font-size: 15.5px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  }

  .page-faq .faq-split__figure {
    position: sticky;
    top: 132px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-tiers {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 479px) {
  .page-faq .faq-hero__title {
    font-size: clamp(38px, 12vw, 52px);
  }

  .page-faq .faq-item__q {
    grid-template-columns: 38px minmax(0, 1fr) 16px;
    column-gap: 10px;
    padding: 16px 12px 16px 14px;
  }

  .page-faq .faq-item__text {
    font-size: 15.5px;
  }

  .page-faq .faq-item__a {
    padding: 0 14px 20px 62px;
    font-size: 14.5px;
  }

  .page-faq .faq-sec-num {
    font-size: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-nav__link,
  .page-faq .faq-item,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-item__num {
    transition: none;
  }

  .page-faq .faq-nav__link:hover,
  .page-faq .faq-nav__link:focus-visible {
    transform: none;
  }
}