.page-faq {
  --faq-block: clamp(30px, 6vw, 66px);
  color: var(--warm);
  font-family: var(--font-body);
}

.page-faq .crumbs {
  margin: 0 0 clamp(14px, 3vw, 26px);
}

/* ---------- 首屏：大字标题 + 分类索引 ---------- */
.page-faq .faq-hero {
  padding: clamp(18px, 4vw, 42px) 0 clamp(30px, 6vw, 64px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 48px);
}

.page-faq .faq-hero__lead h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 8.4vw, 4.2rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 12px 0 18px;
  color: var(--warm);
}

.page-faq .faq-hero__intro {
  max-width: 34em;
  margin: 0;
  font-size: 17px;
  line-height: 1.8;
  color: var(--cream);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: clamp(22px, 4vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-fact {
  border-top: 1px solid var(--stone);
  padding-top: 12px;
}

.page-faq .faq-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4.6vw, 2rem);
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-fact__unit {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mist);
  margin-left: 6px;
}

.page-faq .faq-fact__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 4vw, 32px);
}

.page-faq .faq-index-nav {
  border-top: 1px solid var(--stone);
  padding-top: 18px;
}

.page-faq .faq-index__caption {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-faq .faq-index {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 2px;
  border-bottom: 1px solid var(--stone);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-index__link .index-row__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-index__link .index-row__title {
  flex: 1 1 auto;
  font-size: 16px;
  color: var(--warm);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-index__link .index-row__meta {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--mist);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible,
.page-faq .faq-index__link.is-active {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-index__link:hover .index-row__title,
.page-faq .faq-index__link.is-active .index-row__title {
  color: var(--cyan);
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-section {
  padding: var(--faq-block) 0;
  scroll-margin-top: 90px;
}

.page-faq .faq-section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

.page-faq .faq-count {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-faq .faq-section__lead {
  max-width: 34em;
  margin: 14px 0 clamp(20px, 3vw, 28px);
  font-size: 16px;
  line-height: 1.8;
  color: var(--cream);
}

/* ---------- 流程区 ---------- */
.page-faq .flow-figure {
  margin: 0 0 clamp(24px, 4vw, 38px);
  overflow: hidden;
}

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

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

.page-faq .flow__step {
  position: relative;
  background: var(--moss);
  border: 1px solid var(--stone);
  padding: clamp(20px, 3.4vw, 30px);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .flow__step::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 22px;
  height: 22px;
  background: var(--night);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  pointer-events: none;
}

.page-faq .flow__step:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

.page-faq .flow__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.4rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .flow__title {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 3.4vw, 1.4rem);
  letter-spacing: 0.01em;
  margin: 10px 0;
  color: var(--warm);
}

.page-faq .flow__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--cream);
}

.page-faq .faq-list--flow {
  margin-top: clamp(24px, 4vw, 40px);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  position: relative;
  border-top: 1px solid var(--stone);
}

.page-faq .faq-item:last-child {
  border-bottom: 1px solid var(--stone);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 0;
  background: var(--cyan);
  transition: height 120ms var(--ease);
}

.page-faq .faq-item[open]::before {
  height: 100%;
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 4px 16px 12px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__mark {
  flex: none;
  margin-top: 6px;
  width: 10px;
  height: 10px;
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
  transition: background-color var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark {
  background: var(--cyan);
}

.page-faq .faq-item__headline {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-faq .faq-item__text {
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--warm);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item__q:hover .faq-item__text {
  color: var(--cyan);
}

.page-faq .faq-item__hint {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--mist);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item__a {
  padding: 0 0 20px 36px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--cream);
}

.page-faq .faq-item__a p {
  max-width: 34em;
  margin: 0 0 10px;
}

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

.page-faq .faq-item__a ol {
  list-style: none;
  counter-reset: faqstep;
  margin: 0 0 10px;
  padding: 0;
}

.page-faq .faq-item__a ol li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 36px;
  margin-bottom: 8px;
  max-width: 34em;
}

.page-faq .faq-item__a ol li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

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

/* ---------- 图文分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: clamp(22px, 4vw, 34px);
}

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

/* ---------- 联系区 ---------- */
.page-faq .faq-contact {
  position: relative;
  background: var(--moss);
  border: 1px solid var(--stone);
  padding: clamp(22px, 4vw, 40px);
}

.page-faq .faq-contact::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 26px;
  height: 26px;
  background: var(--night);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-faq .faq-contact .faq-section__lead {
  margin-top: 12px;
}

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

.page-faq .faq-contact__key {
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--mist);
  margin-bottom: 5px;
}

.page-faq .faq-contact__val {
  font-size: 16px;
  line-height: 1.7;
  color: var(--warm);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--cream);
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }

  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-index-nav {
    border-top: 0;
    border-left: 1px solid var(--stone);
    padding-top: 0;
    padding-left: clamp(16px, 3vw, 26px);
  }

  .page-faq .flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.72fr);
    align-items: start;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding-top: clamp(26px, 4vw, 54px);
  }

  .page-faq .faq-item__q {
    padding: 19px 6px 19px 16px;
  }

  .page-faq .faq-index__link {
    padding: 13px 4px;
  }
}