.page-faq {
  --faq-card: #FFFDF8;
  --faq-hair: rgba(31, 224, 208, 0.30);
}

/* ---------- 首屏 ---------- */
.page-faq .guide-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(24px, 5vw, 56px) clamp(32px, 6vw, 72px);
}

.page-faq .guide-hero::after {
  content: "";
  position: absolute;
  inset: auto -12% -45% 42%;
  height: 70%;
  background: radial-gradient(closest-side, rgba(31, 224, 208, 0.16), transparent 72%);
  pointer-events: none;
}

.page-faq .guide-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .hero-head {
  max-width: 62ch;
  margin-top: clamp(18px, 3vw, 34px);
}

.page-faq .hero-head .display {
  margin: 12px 0 0;
  letter-spacing: -0.04em;
  line-height: 0.98;
}

.page-faq .hero-head .lede {
  margin: 20px 0 0;
  max-width: 40ch;
  color: var(--cyan-100);
}

.page-faq .hero-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: clamp(28px, 5vw, 52px);
  border-top: 2px solid var(--cyan-400);
  border-bottom: 2px solid var(--cyan-400);
}

.page-faq .hero-strip-item {
  display: grid;
  gap: 6px;
  padding: 16px 16px 18px;
  border-left: 1px solid var(--faq-hair);
}

.page-faq .hero-strip-item:nth-child(odd) {
  border-left: 0;
}

.page-faq .hero-strip-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--cyan-400);
}

.page-faq .hero-strip-num em {
  font-style: normal;
  color: var(--amber-500);
}

.page-faq .hero-strip-key {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--paper-300);
}

/* ---------- 问答长卷 ---------- */
.page-faq .guide-sheet {
  padding-block: clamp(32px, 6vw, 80px);
}

.page-faq .guide-layout {
  display: grid;
  gap: clamp(24px, 4vw, 56px);
}

.page-faq .guide-index .eyebrow {
  color: var(--graphite-700);
  opacity: 0.75;
  margin: 0 0 12px;
}

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

.page-faq .index-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 10px 12px 10px 14px;
  border-left: 3px solid transparent;
  text-decoration: none;
  color: var(--graphite-700);
  font-size: 14px;
  line-height: 1.55;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .index-link:hover,
.page-faq .index-link:focus-visible {
  border-left-color: var(--cyan-400);
  background: rgba(31, 224, 208, 0.12);
  color: var(--ink-950);
  outline: none;
}

.page-faq .index-link:focus-visible {
  border-left-color: var(--amber-500);
}

.page-faq .index-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber-500);
}

.page-faq .guide-body {
  display: grid;
  gap: clamp(34px, 6vw, 72px);
  min-width: 0;
}

.page-faq .qa-group {
  display: grid;
  gap: 16px;
  scroll-margin-top: 110px;
  min-width: 0;
}

.page-faq .qa-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin: 0;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--ink-950);
  padding-bottom: 12px;
  border-bottom: 3px solid var(--ink-950);
}

.page-faq .qa-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--amber-500);
  transform: translateY(-2px);
}

.page-faq .qa-intro {
  margin: 0;
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--graphite-700);
}

.page-faq .media {
  margin: 0;
  border: 3px solid var(--ink-950);
  box-shadow: 12px 12px 0 rgba(8, 12, 24, 0.08);
  overflow: hidden;
  background: var(--indigo-900);
}

.page-faq .media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(1.06) contrast(1.04);
}

.page-faq .media-caption {
  display: block;
  padding: 12px 16px;
  background: var(--indigo-900);
  color: var(--cyan-100);
  font-size: 13px;
  line-height: 1.6;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border: 1px solid var(--paper-300);
  border-left: 4px solid var(--paper-300);
  background: var(--faq-card);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--indigo-900);
  border-left-color: var(--cyan-400);
  background: #FFFFFF;
  box-shadow: 10px 10px 0 rgba(8, 12, 24, 0.07);
}

.page-faq .qa-summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 500;
  line-height: 1.6;
  color: var(--ink-950);
}

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

.page-faq .qa-summary:focus-visible {
  outline: 3px solid var(--amber-500);
  outline-offset: -3px;
}

.page-faq .qa-mark {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 2px solid var(--indigo-900);
  color: var(--indigo-900);
  font-family: var(--font-num);
  font-size: 14px;
  line-height: 1;
  transform: translateY(2px);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .qa:not([open]) .qa-mark::before {
  content: "+";
}

.page-faq .qa[open] .qa-mark::before {
  content: "\2212";
}

.page-faq .qa[open] .qa-mark {
  background: var(--amber-500);
  border-color: var(--amber-500);
  color: var(--ink-950);
}

.page-faq .qa-body {
  padding: 0 18px 20px 54px;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--graphite-700);
}

.page-faq .qa-body p {
  margin: 0 0 12px;
}

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

.page-faq .qa-body a {
  color: var(--indigo-700);
  text-decoration: underline;
  text-decoration-color: var(--cyan-400);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-faq .qa-body a:hover {
  color: var(--ink-950);
  text-decoration-color: var(--amber-500);
}

/* ---------- 档位表 ---------- */
.page-faq .table-scroll {
  overflow-x: auto;
  border: 3px solid var(--ink-950);
  background: #FFFFFF;
  box-shadow: 12px 12px 0 rgba(8, 12, 24, 0.07);
  -webkit-overflow-scrolling: touch;
}

.page-faq .table-scroll .table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  margin: 0;
}

.page-faq .table-caption {
  caption-side: top;
  text-align: left;
  padding: 14px 16px 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--graphite-700);
}

.page-faq .price {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 1.08em;
  color: var(--ink-950);
  border-bottom: 3px solid var(--amber-500);
  padding-bottom: 1px;
}

/* ---------- 数据条 ---------- */
.page-faq .data-strip {
  display: grid;
  grid-template-columns: 1fr;
  border: 3px solid var(--indigo-900);
  background: var(--indigo-900);
  color: var(--paper-50);
}

.page-faq .data-strip-item {
  display: grid;
  gap: 6px;
  padding: 14px 18px;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .data-strip-item:first-child {
  border-top: 0;
}

.page-faq .strip-key {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan-100);
  text-transform: uppercase;
}

.page-faq .strip-val {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(14px, 1.8vw, 18px);
  line-height: 1.5;
  color: var(--paper-50);
}

.page-faq .strip-val em {
  font-style: normal;
  font-weight: 700;
  color: var(--amber-500);
}

/* ---------- 尾部交接 ---------- */
.page-faq .guide-handoff {
  padding-block: clamp(36px, 6vw, 84px);
}

.page-faq .handoff-grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-faq .guide-handoff .eyebrow {
  color: var(--cyan-400);
}

.page-faq .handoff-title {
  margin: 12px 0 0;
  font-size: clamp(24px, 3.6vw, 42px);
  line-height: 1.14;
  letter-spacing: -0.035em;
  color: var(--paper-50);
}

.page-faq .handoff-lede {
  margin: 18px 0 0;
  max-width: 42ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--cyan-100);
}

.page-faq .cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .handoff-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .handoff-list a {
  display: block;
  padding: 12px 14px;
  border-left: 3px solid transparent;
  color: var(--cyan-100);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.6;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .handoff-list a:hover,
.page-faq .handoff-list a:focus-visible {
  border-left-color: var(--amber-500);
  background: rgba(31, 224, 208, 0.12);
  color: var(--paper-50);
  outline: none;
}

.page-faq .handoff-note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--faq-hair);
  font-size: 13px;
  line-height: 1.7;
  color: var(--cyan-100);
  opacity: 0.85;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .hero-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .hero-strip-item:nth-child(odd) {
    border-left: 1px solid var(--faq-hair);
  }

  .page-faq .hero-strip-item:first-child {
    border-left: 0;
  }

  .page-faq .data-strip {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }

  .page-faq .data-strip-item {
    border-top: 0;
    border-left: 1px solid var(--faq-hair);
  }

  .page-faq .data-strip-item:first-child {
    border-left: 0;
  }
}

@media (min-width: 900px) {
  .page-faq .qa-summary {
    padding: 20px 24px;
  }

  .page-faq .qa-body {
    padding: 0 24px 24px 60px;
  }

  .page-faq .handoff-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-faq .guide-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa-mark,
  .page-faq .index-link,
  .page-faq .handoff-list a {
    transition: none;
  }
}