.page-faq {
  --faq-aside-w: 296px;
  --faq-sticky-top: calc(var(--header-h-sm) + 20px);
  color: var(--paper);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(20px, 4vw, 40px) clamp(30px, 5vw, 56px);
  max-width: 940px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(28px, 5.2vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  margin: 14px 0 20px;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.78;
  color: var(--muted);
  max-width: 62ch;
  margin: 0;
}

.page-faq .hero-stats {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-faq .hero-stats li {
  background: rgba(20, 28, 78, 0.74);
  padding: 18px 20px;
}

.page-faq .hero-stats__n {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

.page-faq .hero-stats__n.num--gold {
  color: var(--gold);
}

.page-faq .hero-stats__l {
  display: block;
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 主栅格 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 60px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .faq-aside {
  display: grid;
  gap: 22px;
  align-content: start;
}

/* ---------- 档位速查工具 ---------- */
.page-faq .tier-tool {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px 20px 20px;
  background:
    linear-gradient(158deg, rgba(58, 42, 114, 0.5), rgba(20, 28, 78, 0.9) 62%, rgba(10, 16, 48, 0.92));
}

.page-faq .tier-tool__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .tier-tool__hint {
  margin: 0 0 20px;
  font-size: 13px;
  color: var(--muted);
}

.page-faq .tier-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .tier__range {
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-faq .tier__time {
  display: block;
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 19px;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

.page-faq .tier__time.num--gold {
  color: var(--gold);
}

.page-faq .tier__bar {
  display: block;
  margin-top: 9px;
  height: 5px;
  border-radius: var(--radius-pill);
  background: rgba(233, 237, 249, 0.1);
  overflow: hidden;
}

.page-faq .tier__bar i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--gold), var(--gold-soft));
}

.page-faq .tier:nth-child(1) .tier__bar i { width: 24%; }
.page-faq .tier:nth-child(2) .tier__bar i { width: 48%; }
.page-faq .tier:nth-child(3) .tier__bar i { width: 74%; }
.page-faq .tier:nth-child(4) .tier__bar i { width: 100%; }

.page-faq .tier-tool__foot {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 锚点导航 ---------- */
.page-faq .faq-anchors {
  counter-reset: anchor;
}

.page-faq .faq-anchors ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 3px;
}

.page-faq .faq-anchors li {
  counter-increment: anchor;
}

.page-faq .faq-anchors a {
  display: block;
  padding: 9px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--muted);
  text-decoration: none;
  transition: color 200ms var(--ease), background 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .faq-anchors a::before {
  content: counter(anchor, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  margin-right: 10px;
  opacity: 0.68;
}

.page-faq .faq-anchors a:hover {
  color: var(--paper);
  background: rgba(43, 224, 200, 0.09);
  border-color: var(--line);
}

.page-faq .faq-anchors a[aria-current="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-900);
  font-weight: 600;
}

/* ---------- 章节 ---------- */
.page-faq .faq-block + .faq-block {
  margin-top: clamp(46px, 6vw, 78px);
}

.page-faq .faq-block h2 {
  font-family: var(--font-head);
  font-size: clamp(23px, 3.4vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 16px 0 12px;
  color: var(--paper);
}

.page-faq .faq-block__lede {
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 64ch;
}

.page-faq .faq-kv {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 26px;
  padding: 0;
}

.page-faq .faq-kv li {
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 7px 16px;
  font-size: 13.5px;
  color: var(--paper);
  background: rgba(20, 28, 78, 0.7);
}

.page-faq .faq-kv strong {
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 30px;
}

.page-faq .faq-figure--breathe {
  margin: clamp(40px, 6vw, 72px) 0 clamp(34px, 5vw, 56px);
}

/* ---------- 质保两档卡片 ---------- */
.page-faq .tier-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 30px;
}

.page-faq .tier-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  background: linear-gradient(150deg, rgba(20, 28, 78, 0.92), rgba(10, 16, 48, 0.86));
}

.page-faq .tier-card--home {
  border-color: rgba(43, 224, 200, 0.34);
}

.page-faq .tier-card--biz {
  border-color: rgba(244, 179, 76, 0.34);
}

.page-faq .tier-card__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .tier-card__big {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-size: clamp(30px, 4vw, 40px);
  line-height: 1;
  color: var(--paper);
}

.page-faq .tier-card__big .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-faq .tier-card--home .tier-card__big .num { color: var(--cyan); }
.page-faq .tier-card--biz .tier-card__big .num { color: var(--gold); }

.page-faq .tier-card__unit {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 400;
  color: var(--muted);
}

.page-faq .tier-card__list {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-faq .tier-card__list > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .tier-card__list dt {
  font-size: 13.5px;
  color: var(--muted);
}

.page-faq .tier-card__list dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
  text-align: right;
}

/* ---------- 折叠问答组 ---------- */
.page-faq .qa-group {
  border-top: 1px solid var(--line-soft);
}

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

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 4px;
  list-style: none;
  cursor: pointer;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  transition: color 200ms var(--ease);
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q:hover {
  color: var(--cyan-soft);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--radius-md);
}

.page-faq .qa__tag {
  flex: none;
  margin-top: 3px;
  padding: 5px 13px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  white-space: nowrap;
  color: var(--cyan);
  background: rgba(43, 224, 200, 0.1);
  transition: background 220ms var(--ease), color 220ms var(--ease), border-color 220ms var(--ease);
}

.page-faq .qa__tag::before {
  content: "展开";
}

.page-faq .qa[open] .qa__tag {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-900);
}

.page-faq .qa[open] .qa__tag::before {
  content: "收起";
}

.page-faq .qa__a {
  padding: 0 4px 22px;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .qa[open] .qa__a {
  animation: faq-answer-in 240ms var(--ease) both;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
}

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

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

.page-faq .qa__a a:hover {
  color: var(--cyan-soft);
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 页尾收束 ---------- */
.page-faq .faq-outro {
  margin-top: clamp(46px, 6vw, 76px);
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(134deg, rgba(99, 37, 63, 0.5), rgba(20, 28, 78, 0.9) 58%, rgba(11, 63, 69, 0.66));
  display: grid;
  gap: 20px;
}

.page-faq .faq-outro h2 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-faq .faq-outro p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-outro .btn {
  justify-self: start;
  white-space: nowrap;
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 480px) {
  .page-faq .hero-stats__n {
    font-size: 25px;
  }

  .page-faq .qa__q {
    font-size: 15.5px;
    gap: 10px;
  }

  .page-faq .qa__tag {
    font-size: 11px;
    padding: 4px 10px;
  }

  .page-faq .tier-cards {
    gap: 14px;
  }
}

/* ---------- 平板 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .faq-outro {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 26px;
  }
}

/* ---------- 桌面：左栏固定 ---------- */
@media (min-width: 1060px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-aside-w) minmax(0, 1fr);
    gap: clamp(40px, 4.5vw, 76px);
  }

  .page-faq .faq-aside {
    position: sticky;
    top: var(--faq-sticky-top);
    align-self: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa[open] .qa__a {
    animation: none;
  }

  .page-faq .qa__q,
  .page-faq .qa__tag,
  .page-faq .faq-anchors a {
    transition: none;
  }
}