.page-faq {
  --faq-line-dark: rgba(201, 214, 227, 0.20);
  --faq-line-light: rgba(11, 31, 58, 0.14);
  --faq-soft-dark: rgba(232, 238, 245, 0.70);
  --faq-soft-light: #43566D;
  background: var(--mist);
  color: var(--ink-700);
}

.page-faq .breadcrumb {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.page-faq .breadcrumb a {
  color: inherit;
  text-decoration: none;
  opacity: 0.72;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  opacity: 1;
  text-decoration: underline;
}

.page-faq .breadcrumb__sep {
  opacity: 0.45;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.2rem, 3.4vw, 2rem) 0 clamp(2.2rem, 5vw, 3.6rem);
  background: linear-gradient(178deg, var(--ink-900) 0%, var(--ink-800) 62%, #10294A 100%);
  color: var(--text-light);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(201, 214, 227, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(201, 214, 227, 0.07) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 8px;
  background-image: repeating-linear-gradient(to right, rgba(255, 107, 53, 0.55) 0 1px, transparent 1px 24px);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.8rem;
  margin-top: clamp(1.4rem, 4vw, 2.4rem);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-size: clamp(1.95rem, 6.6vw, 4.2rem);
  font-weight: 300;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--text-light);
}

.page-faq .faq-hero__title strong {
  font-weight: 700;
  color: #FFFFFF;
}

.page-faq .faq-hero__lead {
  max-width: 46ch;
  margin: 1.1rem 0 0;
  font-size: clamp(0.94rem, 1.5vw, 1.06rem);
  line-height: 1.85;
  color: var(--faq-soft-dark);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--faq-line-dark);
}

.page-faq .faq-fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--faq-line-dark);
}

.page-faq .faq-fact__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: rgba(232, 238, 245, 0.58);
}

.page-faq .faq-fact__value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  color: var(--orange-soft);
}

/* ---------- 区块通用 ---------- */
.page-faq .faq-section {
  position: relative;
  padding: clamp(2.4rem, 5.6vw, 4.4rem) 0;
}

.page-faq .faq-section--light {
  background: var(--mist);
  color: var(--ink-700);
}

.page-faq .faq-section--dark {
  background: var(--ink-800);
  color: var(--text-light);
}

.page-faq .faq-section--deep {
  background: var(--ink-900);
  color: var(--text-light);
}

.page-faq .faq-head {
  display: grid;
  gap: 0.55rem;
  padding-top: 1rem;
  border-top: 1px solid var(--faq-line-light);
}

.page-faq .faq-section--dark .faq-head,
.page-faq .faq-section--deep .faq-head {
  border-top-color: var(--faq-line-dark);
}

.page-faq .faq-head__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: #C24A18;
}

.page-faq .faq-section--dark .faq-head__index,
.page-faq .faq-section--deep .faq-head__index {
  color: var(--orange);
}

.page-faq .faq-head__title {
  margin: 0;
  font-size: clamp(1.4rem, 3.6vw, 2.25rem);
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: -0.015em;
}

.page-faq .faq-head__note {
  max-width: 60ch;
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--faq-soft-light);
}

.page-faq .faq-section--dark .faq-head__note,
.page-faq .faq-section--deep .faq-head__note {
  color: var(--faq-soft-dark);
}

/* ---------- 快速定位索引 ---------- */
.page-faq .faq-index {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-line-light);
}

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

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr) 1.2rem;
  align-items: center;
  gap: 0.85rem;
  padding: 0.95rem 0.2rem;
  color: inherit;
  text-decoration: none;
  transition: background-color 0.22s var(--ease), padding-left 0.22s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: rgba(11, 31, 58, 0.045);
  padding-left: 0.75rem;
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--ink-800);
  outline-offset: -2px;
}

.page-faq .faq-index__num {
  position: relative;
  padding-left: 0.72rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--ink-700);
}

.page-faq .faq-index__num::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0.95rem;
  background: var(--orange);
  border-radius: 1px;
}

.page-faq .faq-index__q {
  font-size: 0.95rem;
  line-height: 1.6;
}

.page-faq .faq-index__arrow {
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--muted);
  transition: transform 0.22s var(--ease), color 0.22s var(--ease);
}

.page-faq .faq-index__link:hover .faq-index__arrow,
.page-faq .faq-index__link:focus-visible .faq-index__arrow {
  transform: translateX(4px);
  color: #C24A18;
}

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-line-dark);
  border-radius: 2px;
  background: rgba(201, 214, 227, 0.06);
}

.page-faq .faq-figure__caption {
  margin: 0.7rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.71rem;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--faq-soft-dark);
}

/* ---------- 三步排查 ---------- */
.page-faq .faq-steps__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.9rem;
  margin-top: 1.9rem;
}

.page-faq .faq-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: faq-step;
}

.page-faq .faq-flow__item {
  position: relative;
  padding: 1.1rem 0 1.2rem 3rem;
  border-top: 1px solid var(--faq-line-dark);
}

.page-faq .faq-flow__item:last-child {
  border-bottom: 1px solid var(--faq-line-dark);
}

.page-faq .faq-flow__num {
  position: absolute;
  left: 0;
  top: 1.15rem;
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--orange);
  border: 1px solid rgba(255, 107, 53, 0.5);
  border-radius: 2px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-faq .faq-flow__item:has(.faq-flow__input:checked) .faq-flow__num {
  color: var(--ink-900);
  background: var(--green);
  border-color: var(--green);
}

.page-faq .faq-flow__title {
  margin: 0 0 0.5rem;
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.005em;
  color: var(--text-light);
}

.page-faq .faq-flow__body {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--faq-soft-dark);
}

.page-faq .faq-flow__check {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: 0.75rem;
  cursor: pointer;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: rgba(232, 238, 245, 0.62);
}

.page-faq .faq-flow__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.page-faq .faq-flow__box {
  position: relative;
  flex: none;
  width: 1rem;
  height: 1rem;
  border: 1px solid rgba(201, 214, 227, 0.5);
  border-radius: 2px;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-flow__input:checked + .faq-flow__box {
  background: var(--green);
  border-color: var(--green);
}

.page-faq .faq-flow__input:checked + .faq-flow__box::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 1px;
  width: 4px;
  height: 7px;
  border-right: 2px solid var(--ink-900);
  border-bottom: 2px solid var(--ink-900);
  transform: rotate(42deg);
}

.page-faq .faq-flow__input:focus-visible + .faq-flow__box {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-faq .faq-flow__item:has(.faq-flow__input:checked) .faq-flow__checktext {
  color: var(--green);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-acc {
  margin-top: 1.6rem;
  border-top: 1px solid var(--faq-line-dark);
  border-bottom: 1px solid var(--faq-line-dark);
}

.page-faq .faq-section--light .faq-acc {
  border-color: var(--faq-line-light);
}

.page-faq .faq-acc__summary {
  display: grid;
  grid-template-columns: 1.6rem minmax(0, 1fr) 1.1rem;
  align-items: start;
  gap: 0.8rem;
  padding: 1rem 0;
  cursor: pointer;
  list-style: none;
  border-bottom: 1px solid var(--faq-line-dark);
}

.page-faq .faq-acc:not([open]) .faq-acc__summary {
  border-bottom-color: transparent;
}

.page-faq .faq-section--light .faq-acc__summary {
  border-bottom-color: var(--faq-line-light);
}

.page-faq .faq-section--light .faq-acc:not([open]) .faq-acc__summary {
  border-bottom-color: transparent;
}

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

.page-faq .faq-acc__summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-faq .faq-acc__num {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.9;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-faq .faq-acc__q {
  font-size: 0.95rem;
  line-height: 1.7;
  font-weight: 500;
}

.page-faq .faq-acc__icon {
  position: relative;
  width: 0.95rem;
  height: 0.95rem;
  margin-top: 0.35rem;
  color: currentColor;
  opacity: 0.65;
}

.page-faq .faq-acc__icon::before,
.page-faq .faq-acc__icon::after {
  content: "";
  position: absolute;
  background: currentColor;
  border-radius: 1px;
}

.page-faq .faq-acc__icon::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}

.page-faq .faq-acc__icon::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
  transition: transform 0.25s var(--ease);
}

.page-faq .faq-acc[open] .faq-acc__icon::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-acc__body {
  padding: 0 0 1.05rem 2.4rem;
  font-size: 0.89rem;
  line-height: 1.85;
  color: inherit;
  opacity: 0.86;
}

.page-faq .faq-section--light .faq-acc__body {
  color: var(--faq-soft-light);
  opacity: 1;
}

.page-faq .faq-acc__body p {
  margin: 0 0 0.7rem;
}

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

/* ---------- 使用记录 ---------- */
.page-faq .faq-records__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.9rem;
  margin-top: 1.8rem;
}

.page-faq .faq-ranges {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--faq-line-light);
  border: 1px solid var(--faq-line-light);
  border-radius: 2px;
  overflow: hidden;
}

.page-faq .faq-range {
  display: grid;
  gap: 0.3rem;
  padding: 1rem 1.05rem;
  background: var(--mist);
}

.page-faq .faq-range__value {
  font-family: var(--font-mono);
  font-size: 1.28rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink-800);
}

.page-faq .faq-range__desc {
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--faq-soft-light);
}

.page-faq .faq-records__note {
  margin: 1.1rem 0 0;
  padding: 0.85rem 1rem;
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--ink-700);
  background: rgba(11, 31, 58, 0.05);
  border-left: 3px solid var(--orange);
  border-radius: 0 2px 2px 0;
}

.page-faq .faq-figure--records img {
  border-color: var(--faq-line-light);
  background: rgba(11, 31, 58, 0.04);
}

.page-faq .faq-figure--records .faq-figure__caption {
  color: var(--faq-soft-light);
}

/* ---------- 设备与浏览器 ---------- */
.page-faq .faq-checks {
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-line-dark);
}

.page-faq .faq-checks__item {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--faq-line-dark);
}

.page-faq .faq-checks__num {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.5;
  letter-spacing: 0.08em;
  color: var(--green);
}

.page-faq .faq-checks__title {
  margin: 0 0 0.4rem;
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-light);
}

.page-faq .faq-checks__text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--faq-soft-dark);
}

.page-faq .faq-browser__acc {
  margin-top: 0.4rem;
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.9rem;
  margin-top: 1.8rem;
}

.page-faq .faq-prepare {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--faq-line-light);
}

.page-faq .faq-prepare__item {
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--faq-line-light);
}

.page-faq .faq-prepare__label {
  display: inline-block;
  margin-bottom: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: #C24A18;
}

.page-faq .faq-prepare__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-faq .faq-support__links {
  margin: 1.3rem 0 0;
  font-size: 0.88rem;
  line-height: 1.9;
  color: var(--faq-soft-light);
}

.page-faq .faq-support__links a {
  color: var(--ink-800);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-support__links a:hover,
.page-faq .faq-support__links a:focus-visible {
  color: #C24A18;
}

.page-faq .faq-support__card {
  padding: 1.3rem 1.2rem;
  background: var(--ink-800);
  color: var(--text-light);
  border-top: 3px solid var(--orange);
  border-radius: 2px;
}

.page-faq .faq-support__cardlabel {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--orange-soft);
}

.page-faq .faq-support__mail {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 3.4vw, 1.12rem);
  word-break: break-all;
  letter-spacing: -0.01em;
  color: #FFFFFF;
}

.page-faq .faq-support__copy {
  margin-bottom: 1.2rem;
}

.page-faq .faq-support__phone {
  margin: 0 0 0.6rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--faq-line-dark);
  font-family: var(--font-mono);
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  color: var(--text-light);
}

.page-faq .faq-support__hint {
  margin: 0 0 1.2rem;
  font-size: 0.83rem;
  line-height: 1.8;
  color: var(--faq-soft-dark);
}

.page-faq .faq-support__btn {
  display: inline-block;
  text-decoration: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-ranges {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-support__card {
    padding: 1.6rem 1.5rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-faq .faq-hero__facts {
    margin-top: 0;
  }

  .page-faq .faq-steps__grid {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    align-items: start;
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-faq .faq-records__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-faq .faq-support__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.85fr);
    align-items: start;
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-faq .faq-checks__item {
    grid-template-columns: 3rem minmax(0, 1fr);
    gap: 1.2rem;
  }

  .page-faq .faq-index__link {
    grid-template-columns: 3.4rem minmax(0, 1fr) 1.4rem;
    padding: 1.05rem 0.2rem;
  }

  .page-faq .faq-index__q {
    font-size: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-index__arrow,
  .page-faq .faq-acc__icon::after,
  .page-faq .faq-flow__num,
  .page-faq .faq-flow__box {
    transition: none;
  }
}