.page-faq {
  --faq-accent: var(--cyan);
  color: var(--mist);
  font-family: var(--font-body);
  padding-block: 16px 56px;
}

.page-faq .faq-shell {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: 16px;
}

.page-faq .breadcrumb {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--sage);
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .breadcrumb__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-faq .breadcrumb a {
  color: var(--sage);
  text-decoration: none;
}

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

/* ---------- 首屏拼贴 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 20px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(130% 150% at 8% 0%, var(--blue-900) 0%, var(--ink-800) 52%, var(--ink-900) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(120deg, rgba(55, 240, 208, 0.05) 0 1px, transparent 1px 26px);
  pointer-events: none;
}

.page-faq .faq-hero__body {
  position: relative;
  z-index: 1;
  max-width: 62ch;
}

.page-faq .faq-hero .kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 8.4vw, 60px);
  font-weight: 300;
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--mist);
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--sage);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-hero__mark {
  position: absolute;
  right: 6px;
  bottom: -18px;
  pointer-events: none;
  text-align: right;
}

.page-faq .faq-hero__q {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(150px, 44vw, 280px);
  font-weight: 800;
  line-height: 0.74;
  color: transparent;
  -webkit-text-stroke: 2px rgba(55, 240, 208, 0.26);
}

.page-faq .faq-hero__markline {
  display: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--sage);
}

/* ---------- 横幅 ---------- */
.page-faq .faq-banner {
  position: relative;
  margin: 14px 0 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  height: clamp(140px, 26vw, 220px);
  object-fit: cover;
}

.page-faq .faq-banner__tag {
  position: absolute;
  left: 14px;
  top: 14px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(7, 26, 22, 0.78);
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

/* ---------- 左栏索引 ---------- */
.page-faq .faq-index {
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--blue-900);
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

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

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 8px;
  border-left: 2px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  background: rgba(55, 240, 208, 0.09);
  border-left-color: var(--cyan);
  outline: none;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-faq .faq-index__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 12px;
  line-height: 1.8;
  color: var(--sage);
}

/* ---------- 右栏问答 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 14px;
}

.page-faq .faq-sec {
  padding: 20px 16px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--ink-800);
  scroll-margin-top: calc(var(--bar-h) + 18px);
}

.page-faq .faq-sec:nth-child(3n + 2) {
  --faq-accent: var(--orange);
}

.page-faq .faq-sec__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-sec__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--faq-accent);
}

.page-faq .faq-sec h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 4.8vw, 27px);
  font-weight: 400;
  line-height: 1.32;
  color: var(--mist);
}

.page-faq .faq-sec__intro {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--sage);
}

.page-faq .faq-steps {
  counter-reset: step;
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 16px 0 6px;
  padding: 0;
}

.page-faq .faq-steps li {
  position: relative;
  padding-left: 38px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-steps li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--faq-accent);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.page-faq .faq-sec__media {
  margin: 16px 0 6px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-900);
}

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

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  border-top: 1px solid var(--line);
}

.page-faq .faq-item summary {
  position: relative;
  padding: 14px 32px 14px 0;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.65;
  color: var(--mist);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--faq-accent);
}

.page-faq .faq-item[open] summary::after {
  content: "\2212";
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--cyan);
  outline: none;
}

.page-faq .faq-item__body {
  padding: 0 4px 16px 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .faq-item__body p {
  margin: 0;
}

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

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  display: grid;
  gap: 16px;
  margin-top: 18px;
  padding: 24px 20px;
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, var(--violet) 0%, var(--wine) 100%);
}

.page-faq .faq-cta h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 5vw, 30px);
  font-weight: 400;
  line-height: 1.3;
  color: var(--mist);
}

.page-faq .faq-cta p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 720px) {
  .page-faq .faq-shell {
    padding-inline: 22px;
  }

  .page-faq .faq-hero {
    padding: 36px 32px 40px;
  }

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

  .page-faq .faq-index__list {
    grid-template-columns: 1fr 1fr;
    gap: 4px 10px;
  }

  .page-faq .faq-sec {
    padding: 26px 24px 16px;
  }

  .page-faq .faq-sec__media {
    max-width: 380px;
    margin-inline: auto;
  }

  .page-faq .faq-cta {
    padding: 30px 28px;
  }
}

@media (min-width: 960px) {
  .page-faq {
    padding-block: 22px 72px;
  }

  .page-faq .faq-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: end;
    gap: 24px;
    padding: 48px 48px 44px;
  }

  .page-faq .faq-hero__mark {
    position: relative;
    right: auto;
    bottom: auto;
    text-align: right;
  }

  .page-faq .faq-hero__markline {
    display: block;
    margin-top: 10px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 296px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
    margin-top: 26px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
    padding: 22px 18px;
  }

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

  .page-faq .faq-body {
    gap: 18px;
  }

  .page-faq .faq-sec__head {
    padding-bottom: 12px;
  }

  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    margin-top: 26px;
    padding: 34px 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index a,
  .page-faq .faq-item summary {
    transition: none;
  }
}