.page-faq {
  --faq-pad: 18px;
  --faq-max: 1120px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  padding-bottom: 64px;
  overflow-x: hidden;
}

.page-faq * {
  box-sizing: border-box;
}

.page-faq .faq-wrap {
  width: 100%;
  max-width: var(--faq-max);
  margin: 0 auto;
  padding: 0 var(--faq-pad);
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: var(--faq-max);
  margin: 0 auto;
  padding: 18px var(--faq-pad) 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray);
}

.page-faq .breadcrumb a {
  color: var(--gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .breadcrumb a:hover {
  color: var(--red);
  border-bottom-color: var(--red);
}

.page-faq .breadcrumb__sep {
  color: var(--gray);
  opacity: 0.5;
}

/* 首屏封面 */
.page-faq .faq-cover {
  position: relative;
  margin-top: 16px;
  padding: 34px 0 38px;
  background: var(--night);
  color: var(--white);
  clip-path: var(--cut);
  overflow: hidden;
}

.page-faq .faq-cover::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(251, 252, 253, 0.12) 1px, transparent 1.2px);
  background-size: 24px 24px;
  opacity: 0.5;
  pointer-events: none;
}

.page-faq .faq-cover::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -70px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(215, 38, 61, 0.34), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-cover .faq-wrap {
  position: relative;
  z-index: 1;
}

.page-faq .eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .faq-cover__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 7.2vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--white);
  max-width: 18ch;
}

.page-faq .faq-cover__lead {
  margin: 0 0 24px;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.72;
  color: var(--on-dark);
}

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

.page-faq .faq-jump a {
  display: inline-block;
  padding: 7px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--on-dark);
  text-decoration: none;
  border: 1px solid var(--hair-dark);
  background: rgba(251, 252, 253, 0.04);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--white);
  border-color: var(--red);
  background: rgba(215, 38, 61, 0.2);
}

/* 章节骨架 */
.page-faq .faq-sec {
  padding: 44px 0 6px;
}

.page-faq .faq-head {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

.page-faq .faq-head__num {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  justify-self: start;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--red);
}

.page-faq .faq-head__num::before {
  content: "";
  width: 3px;
  height: 14px;
  background: var(--red);
}

.page-faq .faq-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 4.6vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-head__sub {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--charcoal);
}

/* 两步路径 */
.page-faq .faq-steps {
  display: grid;
  gap: 14px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  padding: 20px 18px 18px;
  background: var(--white);
  border: 1px solid var(--rule);
  clip-path: var(--cut-sm);
}

.page-faq .faq-step__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--red);
}

.page-faq .faq-step__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--charcoal);
}

.page-faq .faq-step__pass {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--rule);
  font-size: 13px;
  line-height: 1.65;
  color: var(--charcoal);
}

.page-faq .faq-step__flag {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  background: var(--cyan-soft);
  color: var(--ink);
}

/* 图片 */
.page-faq .faq-shot {
  margin: 0;
  background: var(--white);
  border: 1px solid var(--rule);
  overflow: hidden;
}

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

.page-faq .faq-shot figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--rule-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  line-height: 1.6;
  color: var(--gray);
}

/* 步骤清单 */
.page-faq .faq-steps-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
  border-top: 1px solid var(--rule);
}

.page-faq .faq-steps-list > li {
  position: relative;
  padding: 16px 0 16px 42px;
  border-bottom: 1px solid var(--rule-soft);
  counter-increment: faqstep;
}

.page-faq .faq-steps-list > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--red);
}

.page-faq .faq-steps-list > li strong {
  display: block;
  margin-bottom: 5px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-steps-list > li p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--charcoal);
}

.page-faq .faq-more {
  margin: 18px 0 0;
  font-size: 14px;
}

.page-faq .faq-more a {
  display: inline-block;
  color: var(--red);
  text-decoration: none;
  border-bottom: 1px solid rgba(215, 38, 61, 0.4);
  padding-bottom: 1px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-more a:hover {
  color: var(--red-deep);
  border-bottom-color: var(--red-deep);
}

/* 兼容类分栏 */
.page-faq .faq-split {
  display: grid;
  gap: 24px;
}

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

.page-faq .faq-shot--side {
  align-self: start;
}

/* 四类卡片 */
.page-faq .faq-cats {
  display: grid;
  gap: 14px;
}

.page-faq .faq-cat {
  padding: 20px 18px;
  background: var(--white);
  border: 1px solid var(--rule);
  clip-path: var(--cut-sm);
}

.page-faq .faq-cat__title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-cat p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--charcoal);
}

/* 双栏对照 */
.page-faq .faq-compare {
  position: relative;
  margin-top: 44px;
  padding: 38px 0 44px;
  background: var(--night);
  color: var(--white);
  clip-path: var(--cut);
  overflow: hidden;
}

.page-faq .faq-compare::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(251, 252, 253, 0.08) 1px, transparent 1.2px);
  background-size: 28px 28px;
  opacity: 0.45;
  pointer-events: none;
}

.page-faq .faq-compare .faq-wrap {
  position: relative;
  z-index: 1;
}

.page-faq .faq-compare__top {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 22px;
}

.page-faq .faq-head__num--dark {
  color: var(--red);
  margin-bottom: 10px;
}

.page-faq .faq-head__title--dark {
  color: var(--white);
  margin: 0;
}

.page-faq .faq-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--on-dark-dim);
}

.page-faq .faq-legend li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.page-faq .faq-legend .dot {
  flex: 0 0 auto;
}

.page-faq .faq-compare__grid {
  position: relative;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--hair-dark);
}

.page-faq .faq-compare__col {
  padding: 22px 0;
  min-width: 0;
}

.page-faq .faq-compare__title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--on-dark-dim);
}

.page-faq .faq-compare__col--action .faq-compare__title {
  color: var(--cyan);
}

.page-faq .faq-compare__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-compare__list li {
  position: relative;
  padding: 13px 0 13px 42px;
  border-bottom: 1px solid var(--hair-dark);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--on-dark);
}

.page-faq .faq-compare__list li:last-child {
  border-bottom: none;
}

.page-faq .faq-compare__code {
  position: absolute;
  left: 0;
  top: 15px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-faq .faq-compare__col--action .faq-compare__code {
  color: var(--cyan);
}

/* 高频条目 */
.page-faq .faq-groups {
  display: grid;
  gap: 26px;
}

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 6px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--ink);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--rule-soft);
  background: transparent;
  transition: background 0.2s var(--ease);
}

.page-faq .faq-item[open] {
  background: var(--white);
}

.page-faq .faq-item > summary {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 30px 14px 4px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 50%;
  width: 10px;
  height: 10px;
  margin-top: -5px;
  background:
    linear-gradient(var(--gray), var(--gray)) center / 10px 1px no-repeat,
    linear-gradient(var(--gray), var(--gray)) center / 1px 10px no-repeat;
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.page-faq .faq-item[open] > summary::after {
  transform: rotate(45deg);
  opacity: 0.6;
}

.page-faq .faq-item__code {
  flex: 0 0 auto;
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--red);
}

.page-faq .faq-item__q {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--ink);
}

.page-faq .faq-item__body {
  padding: 0 28px 16px 4px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--charcoal);
}

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

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

.page-faq .faq-item__points li {
  line-height: 1.7;
}

.page-faq .faq-flag {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  background: var(--orange-soft);
  color: var(--ink);
}

.page-faq .faq-flag--ok {
  background: var(--cyan-soft);
}

/* 尾部引导 */
.page-faq .faq-tail {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  margin-top: 34px;
  padding: 22px 18px;
  background: var(--white);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--red);
}

.page-faq .faq-tail p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--charcoal);
}

@media (min-width: 620px) {
  .page-faq {
    --faq-pad: 28px;
  }

  .page-faq .faq-cover {
    padding: 46px 0 50px;
  }

  .page-faq .faq-cats {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .faq-tail {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 24px 26px;
  }
}

@media (min-width: 860px) {
  .page-faq {
    --faq-pad: 40px;
  }

  .page-faq .faq-sec {
    padding-top: 56px;
  }

  .page-faq .faq-head {
    margin-bottom: 30px;
  }

  .page-faq .faq-steps {
    grid-template-columns: 1fr 1fr;
    gap: 44px;
  }

  .page-faq .faq-step:first-child::before {
    content: "";
    position: absolute;
    top: 42px;
    right: -40px;
    width: 26px;
    height: 1px;
    background: var(--red);
  }

  .page-faq .faq-step:first-child::after {
    content: "";
    position: absolute;
    top: 37px;
    right: -16px;
    width: 0;
    height: 0;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    border-left: 8px solid var(--red);
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 36px;
    align-items: start;
  }

  .page-faq .faq-groups {
    grid-template-columns: 1fr 1fr;
    gap: 30px 40px;
  }

  .page-faq .faq-compare {
    margin-top: 56px;
    padding: 48px 0 56px;
  }

  .page-faq .faq-compare__top {
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 26px;
  }

  .page-faq .faq-legend {
    justify-content: flex-end;
    padding-top: 6px;
  }

  .page-faq .faq-compare__grid {
    grid-template-columns: 1fr 1fr;
    border-top: none;
  }

  .page-faq .faq-compare__grid::before {
    content: "";
    position: absolute;
    top: 6px;
    bottom: 6px;
    left: 50%;
    width: 1px;
    background: linear-gradient(180deg, transparent, var(--hair-dark) 10%, var(--hair-dark) 90%, transparent);
    transform: rotate(1.8deg);
    transform-origin: center;
  }

  .page-faq .faq-compare__col {
    padding: 0 30px;
    border-top: 1px solid var(--hair-dark);
  }

  .page-faq .faq-compare__col:first-child {
    padding-left: 0;
  }

  .page-faq .faq-compare__col:last-child {
    padding-right: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step__num,
  .page-faq .dot {
    animation: none;
  }

  .page-faq .faq-item > summary::after,
  .page-faq .faq-jump a,
  .page-faq .breadcrumb a {
    transition: none;
  }
}