/* ===== 常见问答页 · page-faq ===== */
.page-faq {
  --faq-line: rgba(169, 186, 203, .2);
  --faq-line-hot: rgba(0, 229, 212, .34);
  --faq-panel: rgba(11, 42, 71, .6);
  --faq-panel-open: rgba(18, 63, 94, .66);
  color: var(--grid);
  overflow-x: hidden;
}

.page-faq .faq-lead {
  padding: clamp(18px, 3vw, 30px) 0 clamp(28px, 5vw, 54px);
}

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

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

.page-faq .faq-lead__copy h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 9vw, 66px);
  line-height: 1.05;
  letter-spacing: .04em;
  color: var(--white);
  margin: 12px 0 20px;
}

.page-faq .faq-lead__intro {
  font-size: clamp(15.5px, 2vw, 18px);
  line-height: 1.78;
  color: var(--grid);
  max-width: 46ch;
  margin: 0;
}

.page-faq .faq-lead__hint {
  margin: 20px 0 0;
  font-size: 15px;
  color: var(--mist);
}

.page-faq .faq-lead__hint a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 212, .45);
  padding-bottom: 2px;
}

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

.page-faq .faq-lead__visual {
  margin: 0;
  padding: 10px;
  background: linear-gradient(150deg, rgba(0, 229, 212, .16), rgba(6, 26, 46, .25) 62%);
  clip-path: polygon(0 26px, 26px 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-faq .faq-lead__visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  clip-path: polygon(0 20px, 20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

/* 分类锚点条 */
.page-faq .faq-anchors {
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
  background: linear-gradient(90deg, var(--ink-deep), rgba(4, 16, 28, .55));
}

.page-faq .faq-anchors__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 6px;
  list-style: none;
  margin: 0;
  padding: 10px 0;
}

.page-faq .faq-anchors__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--grid);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

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

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

.page-faq .faq-anchors__list .num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--cyan-soft);
}

/* 高频问题 */
.page-faq .faq-hot {
  padding: clamp(34px, 6vw, 64px) 0 clamp(16px, 3vw, 30px);
}

.page-faq .faq-hot__h {
  font-family: var(--font-display);
  font-size: clamp(20px, 3vw, 28px);
  letter-spacing: .08em;
  color: var(--white);
  margin: 0 0 20px;
}

.page-faq .faq-hot__grid {
  display: grid;
  gap: 16px;
}

.page-faq .faq-hot__card {
  position: relative;
  min-width: 0;
  padding: 22px 20px 26px;
  background: linear-gradient(160deg, var(--ink-3), var(--ink-2) 72%);
  box-shadow: inset 0 0 0 1px rgba(0, 229, 212, .22);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  transition: box-shadow .24s ease;
}

.page-faq .faq-hot__card:hover {
  box-shadow: inset 0 0 0 1px rgba(0, 229, 212, .55);
}

.page-faq .faq-hot__no {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  line-height: 1;
  color: var(--orange);
  text-shadow: var(--glow-hot);
}

.page-faq .faq-hot__card h3 {
  margin: 0 0 10px;
  font-size: clamp(16px, 2vw, 18px);
  line-height: 1.5;
  color: var(--white);
}

.page-faq .faq-hot__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--grid);
}

.page-faq .faq-hot__card a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 212, .45);
}

.page-faq .faq-hot__card a:hover,
.page-faq .faq-hot__card a:focus-visible {
  color: var(--cyan-soft);
}

/* 问答分组 */
.page-faq .faq-group {
  padding: clamp(30px, 5vw, 54px) 0;
  border-top: 1px solid var(--faq-line);
  scroll-margin-top: 24px;
}

.page-faq .faq-group__inner {
  display: block;
}

.page-faq .faq-group__head {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 22px;
}

.page-faq .faq-group__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: clamp(26px, 5vw, 40px);
  font-weight: 600;
  line-height: 1;
  color: rgba(0, 229, 212, .32);
  transition: color .3s ease, text-shadow .3s ease;
}

.page-faq .faq-group:target .faq-group__no {
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}

.page-faq .faq-group__head h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 5vw, 38px);
  line-height: 1.12;
  letter-spacing: .05em;
  color: var(--white);
  margin: 0 0 8px;
}

.page-faq .faq-group__head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--grid);
  max-width: 40ch;
}

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

.page-faq .faq-item {
  margin-bottom: 10px;
  background: var(--faq-panel);
  border-left: 2px solid rgba(169, 186, 203, .18);
  transition: border-color .24s ease, background .24s ease;
}

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

.page-faq .faq-item[open] {
  border-left-color: var(--orange);
  background: var(--faq-panel-open);
}

.page-faq .faq-item summary {
  position: relative;
  padding: 16px 46px 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
  transition: color .2s ease;
}

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

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

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

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

.page-faq .faq-item summary::after {
  content: "";
  position: absolute;
  right: 20px;
  top: 50%;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: translateY(-70%) rotate(45deg);
  transition: transform .24s ease;
}

.page-faq .faq-item[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
}

.page-faq .faq-item__body {
  padding: 0 18px 18px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--grid);
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 62ch;
}

.page-faq .faq-item__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 212, .45);
}

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

/* 咨询引导带 */
.page-faq .faq-cta {
  position: relative;
  margin-top: clamp(28px, 5vw, 56px);
  background: var(--mist);
  color: var(--ink);
  overflow: hidden;
  clip-path: polygon(0 30px, 30px 0, 100% 0, 100% 100%, 0 100%);
}

.page-faq .faq-cta__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: .14;
}

.page-faq .faq-cta__body {
  position: relative;
  z-index: 1;
  padding: clamp(36px, 6vw, 66px) 0;
}

.page-faq .faq-cta__grid {
  display: grid;
  gap: 26px;
}

.page-faq .faq-cta .eyebrow {
  color: var(--ink-2);
}

.page-faq .faq-cta__copy h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 5vw, 42px);
  line-height: 1.1;
  letter-spacing: .05em;
  color: var(--ink);
  margin: 10px 0 14px;
}

.page-faq .faq-cta__copy p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-2);
  max-width: 56ch;
}

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

.page-faq .faq-cta__act .btn {
  flex: none;
}

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

  .page-faq .faq-group__head {
    gap: 22px;
  }

  .page-faq .faq-anchors__list {
    gap: 8px 12px;
  }
}

/* 桌面：导航分组与内容并排，左轨右答 */
@media (min-width: 1040px) {
  .page-faq .faq-lead__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  }

  .page-faq .faq-anchors__list {
    gap: 10px 20px;
  }

  .page-faq .faq-group__inner {
    display: grid;
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 60px);
    align-items: start;
  }

  .page-faq .faq-group__head {
    display: block;
    margin-bottom: 0;
    position: sticky;
    top: 36px;
  }

  .page-faq .faq-group__no {
    display: block;
    margin-bottom: 12px;
  }

  .page-faq .faq-group__list {
    border-left: 1px solid var(--faq-line);
    padding-left: clamp(20px, 3vw, 40px);
  }

  .page-faq .faq-cta__grid {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item summary,
  .page-faq .faq-item summary::after,
  .page-faq .faq-hot__card,
  .page-faq .faq-group__no,
  .page-faq .faq-anchors__list a {
    transition: none !important;
  }
}