.page-faq {
  --faq-idx-w: 252px;
  --faq-radius: 3px;
  padding-bottom: 80px;
}

.page-faq .breadcrumb {
  margin-bottom: 22px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4vw, 54px);
  border-radius: var(--faq-radius);
  color: #fff;
  background:
    repeating-linear-gradient(90deg, rgba(127, 217, 224, .07) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(127, 217, 224, .07) 0 1px, transparent 1px 72px),
    linear-gradient(135deg, var(--c-rock) 0%, var(--c-rock-2) 58%, #1d4a72 100%);
  box-shadow: var(--shadow-2);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -110px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(18, 165, 181, .38) 0%, rgba(18, 165, 181, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero .eyebrow {
  color: var(--c-cyan-soft);
}

.page-faq .faq-hero .page-title {
  margin: 10px 0 0;
  max-width: 20ch;
  color: #fff;
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 62ch;
  color: rgba(255, 255, 255, .82);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid rgba(127, 217, 224, .28);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-size: 26px;
  letter-spacing: .06em;
  color: var(--c-cyan-soft);
}

.page-faq .faq-stat__label {
  font-size: 13px;
  color: rgba(255, 255, 255, .74);
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 26px;
  margin-top: 42px;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  padding: 16px 16px 14px;
  border: 1px solid var(--c-line);
  border-radius: var(--faq-radius);
  background: var(--c-cream);
  box-shadow: var(--shadow-1);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-muted);
  text-transform: uppercase;
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__list > li {
  flex: 0 0 auto;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--c-line);
  border-radius: var(--faq-radius);
  background: #fff;
  color: var(--c-body);
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color var(--t-fast), color var(--t-fast), background var(--t-fast);
}

.page-faq .faq-index__list a:hover {
  border-color: var(--c-cyan);
  color: var(--c-rock);
  background: rgba(18, 165, 181, .07);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-orange);
}

.page-faq .faq-index__foot {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--c-line);
  font-size: 12px;
  line-height: 1.6;
  color: var(--c-muted);
}

/* ---------- 问答组 ---------- */
.page-faq .faq-body {
  display: flex;
  flex-direction: column;
  gap: 52px;
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--topbar-h) + 24px);
  min-width: 0;
}

.page-faq .faq-group .section-head {
  margin-bottom: 20px;
}

.page-faq .faq-group__figure {
  margin: 0 0 22px;
  border: 1px solid var(--c-line);
  border-radius: var(--faq-radius);
  background: var(--c-cream);
}

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

.page-faq .faq-group__figure--side {
  margin: 0;
}

.page-faq .faq-group__split {
  display: grid;
  gap: 22px;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-item {
  border: 1px solid var(--c-line);
  border-radius: var(--faq-radius);
  background: #fff;
  box-shadow: var(--shadow-1);
  transition: border-color var(--t-base), box-shadow var(--t-base), transform var(--t-base);
}

.page-faq .faq-item:hover {
  border-color: rgba(18, 165, 181, .5);
  transform: translateY(-2px);
}

.page-faq .faq-item[open] {
  border-color: rgba(18, 165, 181, .55);
  box-shadow: var(--shadow-2);
  background: var(--c-cream);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 46px 15px 16px;
  position: relative;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-rock);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  top: 13px;
  right: 16px;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--c-rock);
  border: 1px solid var(--c-line);
  border-radius: 50%;
  background: #fff;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
  color: #fff;
  background: var(--c-orange);
  border-color: var(--c-orange);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: -2px;
  box-shadow: inset 0 0 0 1px var(--c-orange);
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  min-width: 30px;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-orange);
}

.page-faq .faq-item__a {
  padding: 2px 18px 18px 58px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--c-body);
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-item__a > *:first-child {
  margin-top: 14px;
}

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

.page-faq .faq-item__tip {
  padding: 10px 12px;
  border-left: 2px solid var(--c-moss);
  background: rgba(111, 139, 114, .09);
  font-size: 14px;
  color: var(--c-body);
}

/* 步骤 */
.page-faq .faq-steps {
  margin: 0 0 10px;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  position: relative;
  padding: 0 0 10px 40px;
  counter-increment: faqstep;
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-cyan);
}

.page-faq .faq-steps li::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 22px;
  bottom: 2px;
  width: 1px;
  background: var(--c-line);
}

.page-faq .faq-steps li:last-child {
  padding-bottom: 0;
}

.page-faq .faq-steps li:last-child::after {
  display: none;
}

/* 清单 */
.page-faq .faq-check {
  margin: 0 0 10px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-check li {
  position: relative;
  padding: 0 0 8px 20px;
}

.page-faq .faq-check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border: 1px solid var(--c-cyan);
  background: rgba(127, 217, 224, .4);
}

/* 差异定义 */
.page-faq .faq-defs {
  margin: 0;
}

.page-faq .faq-defs__row {
  padding: 12px 0;
  border-bottom: 1px dashed var(--c-line);
}

.page-faq .faq-defs__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-defs dt {
  display: inline-block;
  margin-bottom: 6px;
  padding: 2px 8px;
  border-radius: var(--faq-radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: #fff;
  background: var(--c-rock);
}

.page-faq .faq-defs dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-body);
}

/* ---------- 联系带 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 1px;
  margin-top: 24px;
  border: 1px solid var(--c-line);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: var(--c-line);
}

.page-faq .faq-contact__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  background: var(--c-cream);
}

.page-faq .faq-contact__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--c-clay);
}

.page-faq .faq-contact__val {
  font-size: 16px;
  font-weight: 600;
  color: var(--c-rock);
  word-break: break-all;
}

.page-faq .faq-contact__hint {
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-muted);
}

.page-faq .faq-more {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--c-line);
  font-size: 14px;
  color: var(--c-muted);
}

.page-faq .faq-more a {
  color: var(--c-rock);
  text-decoration: underline;
  text-decoration-color: var(--c-cyan);
  text-underline-offset: 3px;
  transition: color var(--t-fast);
}

.page-faq .faq-more a:hover {
  color: var(--c-cyan);
}

.page-faq .faq-more a:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
  box-shadow: 0 0 0 1px var(--c-orange);
}

/* ---------- 平板以上 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-group__split {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 桌面：左侧常驻索引 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-idx-w) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

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

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__list > li {
    flex: 0 0 auto;
  }

  .page-faq .faq-index__list a {
    width: 100%;
    white-space: normal;
    border-color: transparent;
    background: transparent;
    padding: 9px 10px;
  }

  .page-faq .faq-index__list a:hover {
    border-color: var(--c-line);
  }

  .page-faq .faq-item__q {
    font-size: 17px;
    padding: 17px 52px 17px 18px;
  }

  .page-faq .faq-item__a {
    padding: 2px 24px 20px 62px;
  }
}

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

  .page-faq .faq-item:hover {
    transform: none;
  }
}