.page-faq {
  --faq-gap: clamp(20px, 3vw, 34px);
  --faq-radius: var(--card-radius);
  background: var(--paper);
  color: var(--ink);
  overflow-wrap: break-word;
}

.page-faq section[id],
.page-faq [id="index"],
.page-faq [id="answers"] {
  scroll-margin-top: 96px;
}

.page-faq .media-frame {
  overflow: hidden;
  border-radius: var(--faq-radius);
  border: 1px solid var(--rule);
  background: var(--mist);
}

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

.page-faq .media-caption {
  margin: 10px 0 0;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--grey);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(16px, 3vw, 26px) 0 clamp(30px, 5vw, 56px);
  background: linear-gradient(180deg, var(--mist) 0%, rgba(215, 240, 239, 0.25) 46%, var(--paper) 100%);
  border-bottom: 1px solid var(--rule);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, var(--rule) 0 1px, transparent 1px 72px);
  opacity: 0.32;
  pointer-events: none;
}

.page-faq .faq-hero > .shell {
  position: relative;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
  margin-top: clamp(14px, 2vw, 22px);
}

.page-faq .faq-hero-copy {
  position: relative;
  padding-top: 18px;
  border-top: 1px solid var(--ink-blue);
}

.page-faq .faq-hero-copy::before,
.page-faq .faq-hero-copy::after {
  content: "";
  position: absolute;
  top: 0;
  width: 1px;
  height: 12px;
  background: var(--ink-blue);
}

.page-faq .faq-hero-copy::before { left: 0; }
.page-faq .faq-hero-copy::after { right: 0; }

.page-faq .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 0;
  color: var(--ink-blue);
  letter-spacing: -0.01em;
}

.page-faq .faq-h1-tail {
  display: block;
  margin-top: 14px;
  font-size: clamp(0.95rem, 1.6vw, 1.2rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--grey);
}

.page-faq .faq-lead {
  margin: clamp(16px, 2vw, 22px) 0 0;
  max-width: 34em;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 2.4vw, 28px);
}

.page-faq .faq-hero-figure {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--rule);
  border-radius: calc(var(--faq-radius) + 6px);
  background: rgba(251, 250, 247, 0.82);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 4vw, 42px) 0 0;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

.page-faq .faq-stats > div {
  background: var(--paper);
  padding: 14px 16px;
}

.page-faq .faq-stats dt {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--grey);
}

.page-faq .faq-stats dd {
  margin: 6px 0 0;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink-blue);
}

.page-faq .faq-stats .mono-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--ink-blue);
  margin-right: 4px;
}

/* ---------- 索引区 ---------- */
.page-faq .faq-index-section {
  padding: clamp(34px, 5.5vw, 64px) 0;
  background: var(--paper);
}

.page-faq .faq-section-head {
  max-width: 42em;
}

.page-faq .faq-section-head h2 {
  margin: 0;
  color: var(--ink-blue);
}

.page-faq .faq-section-head p {
  margin: 12px 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--grey);
}

.page-faq .faq-index-grid {
  display: grid;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-index-card {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 18px 18px 16px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--faq-radius);
  text-decoration: none;
  color: var(--ink);
  box-shadow: var(--shadow-card);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease), background-color 0.22s var(--ease);
}

.page-faq .faq-index-card::after {
  content: "→";
  position: absolute;
  top: 16px;
  right: 16px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--cyan);
  transition: transform 0.22s var(--ease);
}

.page-faq .faq-index-card:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
  background: var(--paper);
}

.page-faq .faq-index-card:hover::after {
  transform: translateX(3px);
}

.page-faq .faq-index-card:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-faq .faq-index-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ink-blue);
}

.page-faq .faq-index-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
}

.page-faq .faq-index-text {
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--grey);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-answers {
  padding: clamp(28px, 4vw, 52px) 0 clamp(40px, 6vw, 76px);
  background: var(--sage);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-body {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-side {
  padding: 16px 18px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--faq-radius);
}

.page-faq .faq-side-caption {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--grey);
}

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

.page-faq .faq-side-list li {
  margin: 0;
}

.page-faq .faq-side-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  font-size: 0.875rem;
  color: var(--ink-blue);
  text-decoration: none;
  background: var(--mist);
  border: 1px solid transparent;
  border-radius: 999px;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-side-list a:hover,
.page-faq .faq-side-list a:focus-visible {
  border-color: var(--cyan);
  background: var(--paper);
  outline: none;
}

.page-faq .faq-side-list b {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--cyan);
}

.page-faq .faq-side-note {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--rule);
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--grey);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(32px, 4.5vw, 56px);
}

.page-faq .faq-group-head {
  display: grid;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--ink-blue);
}

.page-faq .faq-group-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-group-head h2 {
  margin: 0;
  color: var(--ink-blue);
}

.page-faq .faq-group-head > p:last-child {
  margin: 0;
  max-width: 40em;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--grey);
}

.page-faq .faq-group-figure {
  margin: 18px 0 6px;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  margin-top: 12px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--faq-radius);
  transition: border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--cyan);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-item > summary {
  position: relative;
  display: grid;
  gap: 10px;
  padding: 16px 52px 16px 18px;
  list-style: none;
  cursor: pointer;
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  position: absolute;
  top: 14px;
  right: 16px;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--cyan);
  border: 1px solid var(--rule);
  border-radius: 7px;
  background: var(--paper);
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-item[open] > summary::after {
  content: "−";
  background: var(--mist);
  border-color: var(--cyan);
}

.page-faq .faq-item > summary:hover::after {
  border-color: var(--cyan);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -2px;
  border-radius: var(--faq-radius);
}

.page-faq .faq-q {
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink-blue);
}

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

.page-faq .faq-meta .tag {
  font-size: 0.6875rem;
}

.page-faq .faq-check {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--green);
}

.page-faq .faq-check::before {
  content: "";
  width: 6px;
  height: 6px;
  margin-right: 6px;
  border-radius: 50%;
  background: var(--green);
}

.page-faq .faq-answer {
  padding: 14px 18px 18px;
  border-top: 1px dashed var(--rule);
}

.page-faq .faq-conclusion {
  margin: 0;
  padding-left: 12px;
  border-left: 3px solid var(--orange);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.75;
  color: var(--ink-blue);
}

.page-faq .faq-steps {
  counter-reset: faqstep;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faqstep;
  padding: 5px 0 5px 34px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-note {
  margin: 12px 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--grey);
}

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

/* ---------- 结尾行动面板 ---------- */
.page-faq .faq-help {
  padding: clamp(34px, 5vw, 64px) 0 clamp(44px, 6vw, 80px);
  background: var(--paper);
}

.page-faq .faq-help-panel {
  position: relative;
  padding: clamp(24px, 4vw, 44px);
  background: var(--ink-blue);
  color: var(--paper);
  border-radius: calc(var(--faq-radius) + 4px);
  overflow: hidden;
}

.page-faq .faq-help-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(135deg, rgba(215, 240, 239, 0.08) 0 1px, transparent 1px 14px);
  pointer-events: none;
}

.page-faq .faq-help-panel > * {
  position: relative;
}

.page-faq .faq-help-panel h2 {
  margin: 0;
  color: var(--paper);
}

.page-faq .faq-help-panel > p {
  margin: 14px 0 0;
  max-width: 44em;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(251, 250, 247, 0.82);
}

.page-faq .faq-help-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 2.6vw, 28px);
}

.page-faq .faq-help-panel .btn-ghost {
  color: var(--paper);
  border-color: rgba(251, 250, 247, 0.4);
  background: transparent;
}

.page-faq .faq-help-panel .btn-ghost:hover {
  border-color: var(--mist);
  background: rgba(215, 240, 239, 0.12);
}

.page-faq .faq-help-panel .faq-contact-line {
  margin-top: clamp(18px, 2.4vw, 26px);
  padding-top: 16px;
  border-top: 1px solid rgba(251, 250, 247, 0.22);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-faq .faq-help-panel .faq-legal-line {
  margin-top: 8px;
  font-size: 0.8125rem;
  color: rgba(251, 250, 247, 0.7);
}

.page-faq .faq-legal-line a {
  color: var(--mist);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (min-width: 640px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-index-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-side-list {
    gap: 8px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-side-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 4px;
  }

  .page-faq .faq-side-list a {
    display: flex;
    justify-content: space-between;
    border-radius: 10px;
    background: transparent;
    border-color: transparent;
    padding: 8px 10px;
  }

  .page-faq .faq-side-list a:hover,
  .page-faq .faq-side-list a:focus-visible {
    background: var(--mist);
    border-color: var(--cyan);
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-index-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-group-head {
    grid-template-columns: 72px minmax(0, 1fr);
    column-gap: 20px;
    align-items: start;
  }

  .page-faq .faq-group-num {
    grid-row: span 2;
    padding-top: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .page-faq .faq-index-card:hover {
    transform: none;
  }

  .page-faq .faq-index-card:hover::after {
    transform: none;
  }
}