.page-faq {
  --faq-indent: 24px;
  --faq-line: rgba(61, 245, 208, 0.16);
  --faq-hair: rgba(122, 143, 166, 0.28);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(26px, 5vw, 46px) var(--step-lg);
  border-bottom: 1px solid var(--faq-line);
  background:
    radial-gradient(120% 92% at 88% -12%, rgba(61, 245, 208, 0.14) 0%, rgba(61, 245, 208, 0) 58%),
    linear-gradient(115deg, rgba(255, 107, 74, 0.09) 0%, rgba(255, 107, 74, 0) 48%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(46vw, 420px);
  height: 5px;
  background: var(--data-grad);
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}

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

.page-faq .faq-hero-copy .eyebrow {
  display: block;
  margin: 0 0 14px;
}

.page-faq .faq-hero-title {
  margin: 0;
}

.page-faq .faq-hero-title .is-thin,
.page-faq .faq-hero-title .is-strong {
  display: block;
}

.page-faq .faq-lede {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.8;
  color: var(--pearl);
}

.page-faq .faq-hero-media {
  margin: 0;
  border-radius: var(--r-lg);
}

/* ---------- 章节标题共通 ---------- */

.page-faq .section-head {
  margin-bottom: var(--step-md);
}

.page-faq .section-head .index-num,
.page-faq .faq-block-aside .index-num,
.page-faq .faq-help-panel .index-num {
  display: block;
  margin: 0 0 12px;
}

.page-faq .section-head .t-h2,
.page-faq .faq-block-aside .t-h2,
.page-faq .faq-help-panel .t-h2 {
  margin: 0 0 14px;
}

.page-faq .section-head .prose,
.page-faq .faq-block-aside .prose {
  margin: 0;
  max-width: 34em;
}

/* ---------- 四格分流卡 ---------- */

.page-faq .faq-navgrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-node {
  position: relative;
  display: block;
  overflow: hidden;
  padding: 20px 18px 22px;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  background: var(--sky-panel);
  color: var(--pearl);
  text-decoration: none;
  transition: transform 0.28s ease, border-color 0.28s ease;
}

.page-faq .faq-node::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(61, 245, 208, 0.12);
  opacity: 0;
  transition: opacity 0.28s ease;
  pointer-events: none;
}

.page-faq .faq-node > * {
  position: relative;
}

.page-faq .faq-node:hover,
.page-faq .faq-node:focus-visible {
  transform: translateY(-4px);
  border-color: var(--cyan);
}

.page-faq .faq-node:hover::before,
.page-faq .faq-node:focus-visible::before {
  opacity: 1;
}

.page-faq .faq-node-idx {
  display: block;
  margin-bottom: 14px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-node-title {
  display: block;
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .faq-node-desc {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-node:hover .faq-node-desc,
.page-faq .faq-node:focus-visible .faq-node-desc {
  color: var(--pearl);
}

/* ---------- 问答分栏 ---------- */

.page-faq .faq-block-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--step-md);
}

.page-faq .faq-side-media {
  margin: 0;
  border-radius: var(--r-md);
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-list {
  display: grid;
  gap: 14px;
}

.page-faq details.faq-item {
  margin-left: 0;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  background: var(--sky-panel);
  overflow: hidden;
  transition: border-color 0.28s ease, box-shadow 0.28s ease;
}

.page-faq .faq-item[open] {
  border-color: rgba(61, 245, 208, 0.52);
  box-shadow: var(--glow);
}

.page-faq .faq-item > summary {
  position: relative;
  display: block;
  padding: 18px 46px 18px 26px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--pearl);
}

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

.page-faq .faq-item > summary::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 2px;
  background: transparent;
  transition: background 0.28s ease;
}

.page-faq .faq-item[open] > summary::before {
  background: var(--cyan);
}

.page-faq .faq-item > summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1.2;
  color: var(--cyan);
}

.page-faq .faq-item[open] > summary::after {
  content: "\2212";
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-answer {
  padding: 18px 26px 22px;
  border-top: 1px dashed var(--faq-hair);
}

.page-faq .faq-answer p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--pearl);
}

.page-faq .faq-answer p + p {
  margin-top: 12px;
}

.page-faq .step-list {
  list-style: none;
  counter-reset: faqstep;
  display: grid;
  gap: 12px;
  margin: 16px 0 0;
  padding: 0;
}

.page-faq .step-list > li {
  position: relative;
  counter-increment: faqstep;
  padding-left: 38px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--pearl);
}

.page-faq .step-list > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: var(--r-pill);
  background: var(--coral);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.page-faq .faq-note {
  margin: 16px 0 0;
  padding: 12px 16px;
  border-left: 3px solid var(--cyan-dark);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(61, 245, 208, 0.08);
  font-size: 14px;
  line-height: 1.72;
  color: var(--pearl);
}

/* ---------- 联系面板 ---------- */

.page-faq .faq-help-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 56px);
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(92% 130% at 100% 0%, rgba(61, 245, 208, 0.14) 0%, rgba(61, 245, 208, 0) 62%),
    var(--sky-panel);
}

.page-faq .faq-help-panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--data-grad);
}

.page-faq .faq-help-panel .prose {
  max-width: 36em;
}

.page-faq .faq-help-list {
  list-style: none;
  display: grid;
  gap: 10px;
  max-width: 34em;
  margin: 24px 0;
  padding: 0;
}

.page-faq .faq-help-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--pearl);
}

.page-faq .faq-help-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 10px;
  height: 2px;
  background: var(--cyan);
}

.page-faq .faq-help-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.page-faq .faq-rel {
  margin: 26px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

.page-faq .faq-rel a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 245, 208, 0.4);
}

.page-faq .faq-rel a:hover,
.page-faq .faq-rel a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-navgrid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-faq .faq-item:nth-child(even) {
    margin-left: var(--faq-indent);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-faq .faq-block-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-navgrid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-node,
  .page-faq .faq-node::before,
  .page-faq .faq-item,
  .page-faq .faq-item > summary::before {
    transition: none;
  }

  .page-faq .faq-node:hover,
  .page-faq .faq-node:focus-visible {
    transform: none;
  }
}