.page-faq {
  --faq-gap: clamp(20px, 4vw, 40px);
  --faq-pad: clamp(22px, 4.5vw, 46px);
  background: var(--dawn);
  color: var(--rock);
  overflow-x: hidden;
}

.page-faq section {
  padding: clamp(36px, 6vw, 76px) 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(20px, 4vw, 48px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-hero__title {
  margin: 10px 0 16px;
  font-size: clamp(30px, 7.2vw, 54px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.12;
  color: var(--ink);
}

.page-faq .faq-hero__lede {
  max-width: 34em;
  margin: 0 0 26px;
  font-size: clamp(16px, 2.2vw, 18px);
  line-height: 1.8;
  color: var(--rock);
}

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

.page-faq .faq-hero__card {
  background: var(--lake-mist);
  border-radius: var(--radius-lg);
  padding: var(--faq-pad);
}

.page-faq .faq-hero__badge-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.page-faq .faq-hero__badge-note {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--lake-deep);
}

.page-faq .badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ember-ink);
  background: #ffffff;
  border: 2px solid var(--ember);
  border-radius: var(--radius-pill);
  padding: 4px 14px;
  line-height: 1.4;
}

.page-faq .faq-hero__card-text {
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--lake-deep);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 14px;
  margin: 0;
  padding-top: 18px;
  border-top: 1px solid rgba(10, 67, 86, 0.18);
}

.page-faq .faq-hero__stat dt {
  font-size: 13px;
  color: var(--lake-deep);
  margin-bottom: 4px;
}

.page-faq .faq-hero__stat dd {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  color: var(--ink);
}

.page-faq .num {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* ---------- 版本要点 ---------- */
.page-faq .faq-version__panel {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--lake-deep);
  color: #ffffff;
  isolation: isolate;
}

.page-faq .faq-version__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
  z-index: 0;
}

.page-faq .faq-version__inner {
  position: relative;
  z-index: 1;
  padding: var(--faq-pad);
}

.page-faq .faq-version__pin {
  position: absolute;
  top: clamp(18px, 3vw, 30px);
  right: clamp(18px, 3vw, 30px);
  z-index: 2;
  background: rgba(255, 255, 255, 0.94);
}

.page-faq .eyebrow--light {
  color: var(--rape);
}

.page-faq .faq-version__title {
  margin: 10px 0 26px;
  max-width: 16em;
  font-size: clamp(24px, 5vw, 40px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.page-faq .faq-version__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .faq-version__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.page-faq .faq-version__idx {
  font-size: 16px;
  color: var(--rape);
  line-height: 1.6;
}

.page-faq .faq-version__item h3 {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 800;
  color: #ffffff;
}

.page-faq .faq-version__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.82);
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  background: var(--rape-soft);
}

.page-faq .faq-index__grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: center;
}

.page-faq .faq-index__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-faq .faq-index__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-index__title {
  margin: 10px 0 12px;
  font-size: clamp(24px, 5vw, 38px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.18;
  color: var(--ink);
}

.page-faq .faq-index__desc {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--rock);
}

.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 16px;
}

.page-faq .filter-pill {
  font-family: inherit;
  font-size: 14px;
  line-height: 1.4;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--lake);
  background: transparent;
  color: var(--lake-deep);
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.page-faq .filter-pill:hover {
  background: var(--lake-mist);
}

.page-faq .filter-pill:active {
  transform: translateY(1px);
}

.page-faq .filter-pill.is-active,
.page-faq .filter-pill[aria-pressed="true"] {
  background: var(--lake);
  border-color: var(--lake);
  color: #ffffff;
}

.page-faq .filter-count {
  margin: 0;
  font-size: 14px;
  color: var(--lake-deep);
}

/* ---------- 问答 ---------- */
.page-faq .faq-body__inner {
  max-width: 880px;
  margin: 0 auto;
}

.page-faq .faq-group {
  padding: var(--faq-pad);
  border-radius: var(--radius-lg);
  margin-bottom: var(--faq-gap);
}

.page-faq .faq-group--mist {
  background: var(--lake-mist);
}

.page-faq .faq-group--plain {
  background: #ffffff;
  border: 1.5px solid rgba(15, 110, 140, 0.18);
}

.page-faq .faq-group:not(:has(.faq-item:not([hidden]):not(.is-hidden))) {
  display: none;
}

.page-faq .faq-group__head {
  margin-bottom: 20px;
  padding-left: 18px;
  border-left: 4px solid var(--lake);
}

.page-faq .faq-group__title {
  margin: 0 0 6px;
  font-size: clamp(20px, 3.6vw, 28px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-group__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--rock);
}

.page-faq .faq-item {
  background: var(--dawn);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

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

.page-faq .faq-group--plain .faq-item {
  background: var(--dawn);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  list-style: none;
  padding: 18px 20px 18px 22px;
  border-left: 4px solid var(--lake);
  font-size: clamp(16px, 2.4vw, 20px);
  font-weight: 800;
  line-height: 1.5;
  color: var(--ink);
  transition: background 160ms ease;
}

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

.page-faq .faq-item__q:hover {
  background: rgba(15, 110, 140, 0.06);
}

.page-faq .faq-item__q::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 400;
  color: var(--ember);
  line-height: 1;
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "\2013";
}

.page-faq .faq-item[open] .faq-item__q {
  border-left-color: var(--ember);
}

.page-faq .faq-item__a {
  padding: 2px 22px 22px 42px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--rock);
}

.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__steps {
  margin: 10px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 6px;
}

.page-faq .faq-item__steps li {
  padding-left: 4px;
}

.page-faq .faq-item__steps li::marker {
  font-family: var(--font-mono);
  color: var(--ember);
}

/* ---------- 反馈引导 ---------- */
.page-faq .faq-feedback__panel {
  display: grid;
  gap: var(--faq-gap);
  align-items: center;
  background: var(--lake);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: var(--faq-pad);
}

.page-faq .faq-feedback__title {
  margin: 10px 0 14px;
  max-width: 18em;
  font-size: clamp(23px, 4.6vw, 36px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.page-faq .faq-feedback__desc {
  margin: 0 0 22px;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.88);
}

.page-faq .faq-feedback__note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
}

.page-faq .faq-feedback__side {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 24px 22px;
}

.page-faq .faq-flow {
  display: block;
  width: 100%;
  max-width: 260px;
  height: auto;
  color: #ffffff;
}

.page-faq .faq-flow__legend {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.92);
}

.page-faq .faq-flow__legend li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-faq .faq-flow__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: none;
}

.page-faq .faq-flow__dot--ember {
  background: var(--ember);
}

.page-faq .faq-flow__dot--lake {
  background: var(--rape);
}

/* ---------- 联系 ---------- */
.page-faq .faq-contact {
  background: var(--lake-mist);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-contact__title {
  margin: 0 0 12px;
  font-size: clamp(23px, 4.6vw, 36px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink);
}

.page-faq .faq-contact__lead p {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--lake-deep);
}

.page-faq .faq-contact__note {
  font-size: 14px !important;
  color: var(--rock) !important;
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(10, 67, 86, 0.18);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 14px;
  align-items: baseline;
  padding: 16px 20px;
  background: var(--dawn);
}

.page-faq .faq-contact__k {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--lake-deep);
}

.page-faq .faq-contact__v {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-feedback__panel {
    grid-template-columns: 7fr 5fr;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: clamp(32px, 5vw, 64px);
  }

  .page-faq .faq-index__grid {
    grid-template-columns: 5fr 7fr;
    gap: clamp(32px, 5vw, 60px);
  }
}

@media (max-width: 560px) {
  .page-faq .faq-version__pin {
    position: static;
    display: inline-flex;
    margin-bottom: 14px;
  }

  .page-faq .faq-version__title {
    max-width: none;
  }

  .page-faq .faq-item__a {
    padding-left: 24px;
  }

  .page-faq .faq-contact__row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}