.page-faq {
  --faq-rail-w: 208px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: end;
  padding: clamp(26px, 5vw, 62px) 0 clamp(26px, 4vw, 50px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 5vw, 3.15rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.026em;
  color: var(--bright);
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  margin-top: 18px;
  max-width: 62ch;
  color: var(--text);
}

.page-faq .faq-hero__media {
  margin: 0;
  min-width: 0;
}

@media (min-width: 920px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: clamp(36px, 4.5vw, 64px);
  }
}

/* ---------- 分栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding-bottom: clamp(56px, 8vw, 104px);
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 76px);
    align-items: start;
  }
}

/* ---------- 左侧分类轨道 ---------- */
.page-faq .faq-rail {
  min-width: 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 1000px) {
  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--deck-h) + 26px);
    padding-bottom: 0;
    border-bottom: 0;
  }
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-rail__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__item {
  flex: none;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 6px 0;
  font-size: 0.9rem;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s ease;
}

.page-faq .faq-rail__link::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line);
  transition: background 0.18s ease, box-shadow 0.18s ease;
}

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

.page-faq .faq-rail__link:hover::before,
.page-faq .faq-rail__link:focus-visible::before {
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 138, 43, 0.2);
}

@media (min-width: 1000px) {
  .page-faq .faq-rail__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    padding: 9px 0;
    font-size: 0.93rem;
    white-space: normal;
  }
}

/* ---------- 右侧问答主体 ---------- */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-group {
  padding: 30px 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--deck-h) + 84px);
}

.page-faq .faq-main > .faq-group:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 13px;
  margin-bottom: 20px;
}

.page-faq .faq-group__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.4vw, 1.66rem);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--bright);
}

/* ---------- 三步自查 ---------- */
.page-faq .faq-steps {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  display: flex;
  gap: 17px;
  padding: 13px 0;
}

.page-faq .faq-step__num {
  position: relative;
  z-index: 1;
  flex: none;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--ink-800);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-step__title {
  margin: 5px 0 6px;
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--bright);
}

.page-faq .faq-step__text {
  margin: 0;
  max-width: 62ch;
  font-size: 0.95rem;
  line-height: 1.74;
  color: var(--text);
}

@media (min-width: 720px) {
  .page-faq .faq-steps::before {
    content: "";
    position: absolute;
    left: 19px;
    top: 34px;
    bottom: 34px;
    width: 1px;
    background: linear-gradient(180deg, rgba(36, 245, 192, 0.5), rgba(36, 245, 192, 0.06));
  }
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

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

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  padding: 17px 4px 17px 0;
  font-size: clamp(0.98rem, 1.25vw, 1.1rem);
  font-weight: 600;
  line-height: 1.55;
  color: var(--bright);
  cursor: pointer;
  list-style: none;
  transition: color 0.18s ease;
}

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

.page-faq .faq-item__q::before {
  content: "";
  flex: none;
  align-self: stretch;
  min-height: 22px;
  margin-top: 2px;
  width: 3px;
  border-radius: 2px;
  background: var(--line);
  transition: background 0.18s ease, box-shadow 0.18s ease;
}

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  padding-left: 12px;
  font-family: var(--font-mono);
  font-size: 1.14rem;
  font-weight: 400;
  line-height: 1.35;
  color: var(--muted);
  transition: color 0.18s ease;
}

.page-faq .faq-item[open] .faq-item__q::before {
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(36, 245, 192, 0.55);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "\2212";
  color: var(--cyan);
}

.page-faq .faq-item__a {
  padding: 0 26px 20px 16px;
  max-width: 68ch;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--text);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(36, 245, 192, 0.35);
  transition: border-color 0.18s ease;
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 订阅分组与配图 ---------- */
.page-faq .faq-subgrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  min-width: 0;
}

@media (min-width: 880px) {
  .page-faq .faq-subgrid {
    grid-template-columns: minmax(0, 1fr) 268px;
    gap: clamp(30px, 4vw, 52px);
    align-items: start;
  }
}

.page-faq .faq-subgrid__fig {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-subgrid__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  object-fit: cover;
}

.page-faq .faq-subgrid__fig figcaption {
  margin-top: 10px;
  font-size: 0.8rem;
  line-height: 1.62;
  color: var(--muted);
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-800);
}

.page-faq .faq-contact > p {
  margin: 0 0 18px;
  max-width: 64ch;
  font-size: 0.97rem;
  line-height: 1.76;
  color: var(--text);
}

.page-faq .faq-contact__lines {
  display: grid;
  gap: 10px;
  margin-bottom: 20px;
}

.page-faq .faq-contact__line {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0;
  min-width: 0;
}

.page-faq .faq-contact__key {
  flex: none;
  min-width: 40px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-contact__val {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  letter-spacing: 0.02em;
  color: var(--bright);
  word-break: break-word;
  overflow-wrap: anywhere;
}

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

.page-faq .faq-contact__foot {
  margin: 18px 0 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-contact__foot a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-contact__foot a:hover,
.page-faq .faq-contact__foot a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .faq-item__q,
  .page-faq .faq-item__q::before,
  .page-faq .faq-item__q::after,
  .page-faq .faq-contact__foot a {
    transition-duration: 0.01ms;
  }
}