.page-faq {
  --faq-line: rgba(124, 143, 163, 0.26);
  --faq-line-cyan: rgba(46, 211, 224, 0.32);
  --faq-answer-bg: rgba(168, 238, 245, 0.13);
  --faq-card-bg: #ffffff;
  display: block;
  background: var(--mist-50);
  color: var(--slate-700);
  font-family: var(--font-sans);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: 40px 56px;
  background: var(--ink-900);
  color: var(--mist-50);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -30% 45% 30% -15%;
  background: radial-gradient(circle at 40% 40%, rgba(46, 211, 224, 0.18), transparent 64%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -80px;
  width: 260px;
  height: 260px;
  border: 1px solid rgba(232, 163, 61, 0.22);
  border-radius: 50%;
  pointer-events: none;
}

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

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
  margin-top: 22px;
}

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

.page-faq .faq-hero h1 {
  margin: 12px 0 16px;
  font-size: clamp(30px, 8vw, 46px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.page-faq .faq-hero__intro {
  margin: 0;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 247, 250, 0.78);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 16px 20px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid rgba(168, 238, 245, 0.18);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-stat__num {
  font-size: 28px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--amber-500);
}

.page-faq .faq-stat__unit {
  font-size: 12px;
  color: var(--cyan-200);
}

.page-faq .faq-stat__label {
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate-400);
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(168, 238, 245, 0.16);
  background: var(--ink-700);
  object-fit: cover;
}

.page-faq .faq-hero__figure figcaption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--slate-400);
}

/* ---------- 分类跳转条 ---------- */
.page-faq .faq-jump {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(7, 21, 40, 0.95);
  border-bottom: 1px solid var(--faq-line-cyan);
  backdrop-filter: blur(8px);
}

.page-faq .faq-jump__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-block: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-jump__inner::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-jump__label {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--slate-400);
}

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

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border: 1px solid rgba(168, 238, 245, 0.24);
  border-radius: var(--radius-pill);
  font-size: 14px;
  line-height: 1.4;
  color: var(--mist-50);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease-out),
              background-color var(--dur) var(--ease-out),
              color var(--dur) var(--ease-out);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--cyan-400);
  background: rgba(46, 211, 224, 0.14);
}

.page-faq .faq-jump__link.is-current {
  border-color: var(--cyan-400);
  background: var(--cyan-400);
  color: var(--ink-900);
}

.page-faq .faq-jump__count {
  font-size: 11px;
  opacity: 0.72;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  padding-block: 52px;
  background: var(--mist-50);
}

.page-faq .faq-group:nth-of-type(odd) {
  background: #ffffff;
}

.page-faq .faq-group__head {
  display: grid;
  gap: 10px;
  margin-bottom: 26px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--faq-line);
}

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

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(22px, 5vw, 30px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

.page-faq .faq-group__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate-700);
}

.page-faq .faq-link {
  color: var(--ink-500);
  text-decoration: underline;
  text-decoration-color: var(--cyan-400);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease-out);
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  color: var(--cyan-400);
}

.page-faq .faq-link--inverse {
  color: var(--cyan-200);
  text-decoration-color: var(--amber-500);
}

.page-faq .faq-link--inverse:hover,
.page-faq .faq-link--inverse:focus-visible {
  color: var(--amber-500);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  overflow: hidden;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
  background: var(--faq-card-bg);
  box-shadow: var(--shadow-card);
  transition: border-color var(--dur) var(--ease-out),
              box-shadow var(--dur) var(--ease-out),
              transform var(--dur) var(--ease-out);
}

.page-faq .faq-item:hover {
  transform: translateY(-4px);
  border-color: var(--faq-line-cyan);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-item[open] {
  border-color: var(--cyan-400);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink-900);
}

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

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: -2px;
}

.page-faq .faq-item__no {
  display: inline-grid;
  place-items: center;
  min-width: 30px;
  height: 24px;
  padding: 0 7px;
  border-radius: var(--radius-pill);
  background: var(--cyan-200);
  color: var(--ink-900);
  font-size: 12px;
  font-weight: 600;
}

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

.page-faq .faq-item__icon {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  flex: none;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  left: 2px;
  right: 2px;
  top: 50%;
  height: 2px;
  margin-top: -1px;
  border-radius: 2px;
  background: var(--ink-500);
  transition: transform var(--dur) var(--ease-out),
              background-color var(--dur) var(--ease-out);
}

.page-faq .faq-item__icon::after {
  transform: rotate(90deg);
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: rotate(0deg);
}

.page-faq .faq-item[open] .faq-item__icon::before,
.page-faq .faq-item[open] .faq-item__icon::after {
  background: var(--cyan-400);
}

.page-faq .faq-item__a {
  padding: 14px 18px 18px;
  border-top: 1px solid var(--faq-line-cyan);
  background: var(--faq-answer-bg);
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-open var(--dur) var(--ease-out);
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--slate-700);
}

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 价格与质保关系图 ---------- */
.page-faq .faq-infographic {
  margin: 0;
  padding-block: 44px;
  background: var(--ink-700);
}

.page-faq .faq-infographic img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(168, 238, 245, 0.14);
  object-fit: cover;
}

.page-faq .faq-infographic figcaption {
  margin-top: 16px;
  max-width: 58ch;
  font-size: 13px;
  line-height: 1.8;
  color: var(--slate-400);
}

/* ---------- 底部联系 ---------- */
.page-faq .faq-cta {
  padding-block: 52px 60px;
  background: var(--ink-900);
  color: var(--mist-50);
}

.page-faq .faq-cta__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-cta .eyebrow {
  color: var(--amber-500);
}

.page-faq .faq-cta h2 {
  margin: 10px 0 14px;
  font-size: clamp(22px, 5vw, 30px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.page-faq .faq-cta__lead p {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 247, 250, 0.78);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-cta__panel {
  display: grid;
  gap: 16px;
  padding: 22px;
  border: 1px solid var(--faq-line-cyan);
  border-radius: var(--radius-lg);
  background: var(--ink-700);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-cta__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(168, 238, 245, 0.14);
}

.page-faq .faq-cta__row:last-of-type {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-cta__key {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--slate-400);
}

.page-faq .faq-cta__val {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--cyan-200);
  word-break: break-all;
}

.page-faq .faq-cta__val--text {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--mist-50);
}

.page-faq .faq-cta__note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--slate-400);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero {
    padding-block: 52px 68px;
  }

  .page-faq .faq-group {
    padding-block: 64px;
  }

  .page-faq .faq-group__head {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    column-gap: 44px;
    row-gap: 12px;
    align-items: end;
  }

  .page-faq .faq-group__head .eyebrow {
    grid-column: 1 / -1;
  }

  .page-faq .faq-group__head h2 {
    grid-column: 1;
  }

  .page-faq .faq-group__lead {
    grid-column: 2;
  }

  .page-faq .faq-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 20px;
    row-gap: 14px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-cta__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-cta {
    padding-block: 68px 76px;
  }

  .page-faq .faq-infographic {
    padding-block: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__icon::before,
  .page-faq .faq-item__icon::after,
  .page-faq .faq-jump__link {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }
}