.page-faq {
  --faq-surface: #ffffff;
  --faq-rail: 258px;
  background: var(--paper);
  color: var(--text-strong);
  overflow-wrap: break-word;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  padding-top: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(110% 150% at 88% -20%, rgba(53, 240, 208, 0.18), transparent 60%),
    radial-gradient(80% 120% at 4% 112%, rgba(255, 122, 47, 0.14), transparent 62%),
    linear-gradient(158deg, var(--blue-deep) 0%, var(--blue-mid) 46%, var(--ink-abyss) 100%);
  color: var(--text-on-dark);
  padding: clamp(34px, 5.5vw, 72px) 0 clamp(30px, 4.6vw, 58px);
  margin-bottom: clamp(22px, 3.6vw, 44px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan-signal) 34%, var(--orange-volt) 76%, transparent);
  opacity: 0.75;
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: 16px;
  justify-items: start;
}

.page-faq .faq-eyebrow-dark {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--cyan-signal);
}

.page-faq .faq-hero h1 {
  margin: 0;
  max-width: 19ch;
  font-size: clamp(1.85rem, 4.4vw, 3.05rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--text-on-dark);
}

.page-faq .faq-hero-lead {
  max-width: 54ch;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--text-on-dark-muted);
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 6px;
}

.page-faq .faq-chips a {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border: 1px solid rgba(53, 240, 208, 0.42);
  border-radius: 999px;
  color: var(--cyan-signal);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .faq-chips a:hover,
.page-faq .faq-chips a:focus-visible {
  background: rgba(53, 240, 208, 0.16);
  border-color: var(--cyan-signal);
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 30px);
  padding-bottom: clamp(30px, 4.6vw, 62px);
}

/* ---------- 左栏问题索引 ---------- */
.page-faq .faq-index {
  display: grid;
  gap: 14px;
  padding: 18px 16px;
  border-radius: var(--radius);
  background: linear-gradient(168deg, var(--blue-deep), var(--ink-abyss));
}

.page-faq .faq-index-title {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--cyan-signal);
}

.page-faq .faq-toc {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-toc li {
  scroll-snap-align: start;
}

.page-faq .faq-toc a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  color: var(--text-on-dark);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
  transition: background 160ms var(--ease), border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  background: var(--blue-glass);
  border-color: var(--cyan-signal);
}

.page-faq .faq-dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1px solid var(--cyan-signal);
  transition: background 160ms var(--ease), box-shadow 160ms var(--ease);
}

.page-faq .faq-toc a:hover .faq-dot,
.page-faq .faq-toc a:focus-visible .faq-dot {
  background: var(--cyan-signal);
  box-shadow: 0 0 0 3px rgba(53, 240, 208, 0.18);
}

.page-faq .faq-count {
  display: none;
  margin-left: auto;
  padding-left: 10px;
  font-size: 11.5px;
  color: var(--text-on-dark-muted);
}

.page-faq .faq-index-note {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-dark);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--text-on-dark-muted);
}

/* ---------- 右栏内容 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  min-width: 0;
}

.page-faq .faq-block {
  background: var(--faq-surface);
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  padding: clamp(20px, 3vw, 34px);
  scroll-margin-top: 92px;
}

.page-faq .faq-block-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: start;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-light);
}

.page-faq .faq-block-num {
  padding-top: 4px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--orange-volt);
}

.page-faq .faq-block-head h2 {
  margin: 0 0 6px;
  font-size: clamp(1.25rem, 2.4vw, 1.68rem);
  line-height: 1.25;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--text-strong);
}

.page-faq .faq-block-head p {
  max-width: 48ch;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-muted);
}

/* ---------- 三步排查 ---------- */
.page-faq .faq-steps-grid {
  display: grid;
  gap: clamp(20px, 2.8vw, 32px);
  margin-top: 22px;
}

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

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  background: var(--paper);
  border-left: 3px solid var(--cyan-signal);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-faq .faq-step-num {
  padding-top: 3px;
  font-size: 13px;
  font-weight: 600;
  color: var(--orange-volt);
}

.page-faq .faq-steps h3 {
  margin: 0 0 5px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text-strong);
}

.page-faq .faq-steps p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-muted);
}

.page-faq .faq-media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

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

/* ---------- 问答折叠 ---------- */
.page-faq .faq-list {
  margin-top: 4px;
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 2px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.6vw, 16.5px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-strong);
  transition: color 160ms var(--ease);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--blue-mid);
}

.page-faq .faq-item[open] summary {
  color: var(--blue-deep);
}

.page-faq .faq-q {
  min-width: 0;
}

.page-faq .faq-mark {
  flex: none;
  margin-left: auto;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--orange-volt);
  border: 1px solid rgba(255, 122, 47, 0.42);
  border-radius: 50%;
  transition: transform 160ms var(--ease), background 160ms var(--ease), color 160ms var(--ease);
}

.page-faq .faq-item[open] .faq-mark {
  transform: rotate(45deg);
  background: var(--orange-volt);
  color: #ffffff;
}

.page-faq .faq-answer {
  max-width: 64ch;
  padding: 0 34px 20px 2px;
}

.page-faq .faq-answer p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text-strong);
}

.page-faq .faq-answer a {
  color: var(--blue-mid);
  text-decoration: none;
  border-bottom: 1px solid rgba(22, 75, 120, 0.35);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .faq-answer a:hover,
.page-faq .faq-answer a:focus-visible {
  color: var(--orange-volt);
  border-color: var(--orange-volt);
}

.page-faq .faq-kbd {
  display: inline-block;
  padding: 0 5px;
  font-family: var(--font-mono);
  font-size: 0.86em;
  font-weight: 600;
  color: var(--blue-deep);
  background: var(--paper-alt);
  border: 1px solid var(--line-light);
  border-radius: 3px;
  white-space: nowrap;
}

/* ---------- 底部深色区 ---------- */
.page-faq .faq-callout-wrap {
  padding-bottom: clamp(46px, 7vw, 96px);
}

.page-faq .faq-callout {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  padding: clamp(22px, 3.4vw, 42px);
  border-radius: var(--radius);
  background:
    radial-gradient(90% 130% at 6% 0%, rgba(53, 240, 208, 0.16), transparent 58%),
    radial-gradient(70% 110% at 100% 100%, rgba(255, 122, 47, 0.14), transparent 62%),
    linear-gradient(150deg, var(--blue-deep), var(--ink-abyss));
  color: var(--text-on-dark);
  overflow: hidden;
}

.page-faq .faq-callout-media {
  margin: 0;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.page-faq .faq-callout-body {
  min-width: 0;
}

.page-faq .faq-callout-body h2 {
  margin: 10px 0 12px;
  font-size: clamp(1.32rem, 2.8vw, 2rem);
  line-height: 1.22;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--text-on-dark);
}

.page-faq .faq-callout-body > p {
  max-width: 52ch;
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-on-dark-muted);
}

.page-faq .faq-contact {
  display: grid;
  gap: 9px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-on-dark);
}

.page-faq .faq-contact span {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--cyan-signal);
}

.page-faq .faq-contact a {
  color: var(--text-on-dark);
  text-decoration: none;
  border-bottom: 1px solid var(--line-dark);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-steps-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
    align-items: start;
    gap: clamp(24px, 3vw, 40px);
  }

  .page-faq .faq-callout {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1fr);
    align-items: center;
    gap: clamp(26px, 4vw, 54px);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(28px, 3.4vw, 48px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 92px;
    padding: 22px 18px 22px 22px;
  }

  .page-faq .faq-toc {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    border-left: 1px solid var(--line-dark);
    padding: 0;
  }

  .page-faq .faq-toc a {
    width: 100%;
    padding: 9px 0 9px 14px;
    border: 0;
    border-radius: 0;
    color: var(--text-on-dark-muted);
    font-weight: 600;
    white-space: normal;
  }

  .page-faq .faq-toc a:hover,
  .page-faq .faq-toc a:focus-visible {
    background: none;
    color: var(--cyan-signal);
  }

  .page-faq .faq-count {
    display: inline;
  }
}

@media (max-width: 520px) {
  .page-faq .faq-kbd {
    white-space: normal;
  }

  .page-faq .faq-answer {
    padding-right: 4px;
  }

  .page-faq .faq-contact li {
    grid-template-columns: minmax(0, 1fr);
    gap: 3px;
  }
}