.page-faq {
  --faq-axis-w: 236px;
  --faq-sticky: 118px;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  padding: clamp(24px, 4vw, 48px) 0 clamp(56px, 9vw, 104px);
  overflow-wrap: break-word;
}

.page-faq .faq-hero {
  margin: clamp(20px, 3.6vw, 40px) 0 clamp(32px, 5vw, 56px);
  max-width: 62rem;
}

.page-faq .faq-hero .plate {
  display: inline-block;
  margin-bottom: 18px;
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: 90%;
  font-size: clamp(30px, 6.6vw, 58px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}

/* ---------- 双列骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

/* ---------- 左侧分类轴 ---------- */
.page-faq .faq-axis {
  border: 1px solid var(--stroke);
  background: var(--night);
  box-shadow: var(--shadow-layer);
  padding: 18px 16px 20px;
}

.page-faq .faq-axis__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-soft);
}

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

.page-faq .faq-axis__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 8px;
  border-left: 2px solid transparent;
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-axis__link:hover,
.page-faq .faq-axis__link:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(47, 240, 214, 0.07);
}

.page-faq .faq-axis__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.page-faq .faq-axis__link:hover .faq-axis__num {
  color: var(--cyan-soft);
}

.page-faq .faq-axis__foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--stroke);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 右侧问答区 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-cat {
  scroll-margin-top: var(--faq-sticky);
}

.page-faq .faq-cat + .faq-cat {
  margin-top: clamp(40px, 6vw, 72px);
  padding-top: clamp(28px, 4.4vw, 46px);
  border-top: 1px solid var(--stroke);
}

.page-faq .faq-cat__head {
  display: flex;
  align-items: baseline;
  gap: 12px 14px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.page-faq .faq-cat__num {
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.6vw, 24px);
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-faq .faq-cat__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-stretch: 92%;
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-faq .faq-cat__intro {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--stroke);
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: clamp(15px, 2.3vw, 20px) 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-stretch: 94%;
  font-size: clamp(16px, 2.2vw, 20px);
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--paper);
  transition: color 0.2s ease;
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

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

.page-faq .faq-item__idx {
  flex: 0 0 auto;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

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

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

.page-faq .faq-item__q::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: 6px;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 400;
  line-height: 1.3;
  color: var(--cyan);
}

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

.page-faq .faq-item__a {
  padding: 0 clamp(4px, 1vw, 12px) clamp(18px, 2.6vw, 26px) 34px;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}

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

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

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

.page-faq .faq-steps {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--stroke);
  background: var(--night);
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-dim);
}

.page-faq .faq-figure--step {
  box-shadow: var(--shadow-layer);
}

.page-faq .faq-figure--wide {
  margin: 0 0 clamp(22px, 3.2vw, 32px);
  box-shadow: var(--shadow-layer);
}

.page-faq .faq-figure--wide img {
  aspect-ratio: 1400 / 600;
}

.page-faq .faq-cat__body {
  display: grid;
  gap: clamp(22px, 3.4vw, 30px);
}

/* ---------- 结尾联系区 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
  border: 1px solid var(--stroke);
  background: var(--night);
  box-shadow: var(--shadow-layer);
  padding: clamp(20px, 3vw, 32px);
}

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

.page-faq .faq-contact__row {
  display: grid;
  gap: 5px;
  padding: 14px 0;
  border-bottom: 1px solid var(--stroke);
}

.page-faq .faq-contact__row:first-child {
  border-top: 1px solid var(--stroke);
}

.page-faq .faq-contact__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-faq .faq-contact__val {
  font-family: var(--font-mono);
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.5;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-contact__aside {
  display: grid;
  gap: 12px;
  align-content: start;
}

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

.page-faq .faq-contact__note {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--cyan);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-faq .faq-next {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 479px) {
  .page-faq .faq-axis,
  .page-faq .faq-contact,
  .page-faq .faq-figure--wide,
  .page-faq .faq-figure--step {
    box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.38);
  }

  .page-faq .faq-item__a {
    padding-left: 22px;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-cat__body {
    grid-template-columns: minmax(0, 1fr) minmax(230px, 320px);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-axis-w) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-faq .faq-axis {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .faq-cat__intro {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-axis__link,
  .page-faq .faq-item__q {
    transition: none;
  }
}