.page-faq {
  --faq-line: rgba(247, 251, 255, .14);
  --faq-line-2: rgba(247, 251, 255, .28);
  --faq-cut: 16px;
  position: relative;
  display: block;
  color: var(--snow);
  padding: 0 0 76px;
  overflow-x: hidden;
  background:
    radial-gradient(900px 480px at 88% -8%, rgba(27, 108, 168, .42), transparent 62%),
    radial-gradient(620px 440px at 2% 34%, rgba(244, 122, 31, .12), transparent 68%),
    linear-gradient(178deg, var(--ink) 0%, var(--lake) 44%, var(--ink-2) 100%);
}

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

/* ---------- 首屏框景 ---------- */

.page-faq .faq-hero {
  padding: 26px 0 6px;
}

.page-faq .faq-hero-frame {
  position: relative;
  padding: 26px 20px 28px;
  background: linear-gradient(155deg, rgba(27, 108, 168, .55) 0%, rgba(11, 60, 93, .88) 46%, rgba(7, 26, 38, .94) 100%);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}

.page-faq .faq-hero-frame::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 0;
  width: 72px;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--lime));
}

.page-faq .faq-crumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(247, 251, 255, .58);
}

.page-faq .faq-crumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(247, 251, 255, .3);
}

.page-faq .faq-crumb a {
  color: var(--lime);
  text-decoration: none;
}

.page-faq .faq-crumb a:hover {
  color: var(--orange-hi);
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 22px;
  margin-top: 18px;
}

.page-faq .faq-title {
  margin: 0;
  font-size: clamp(30px, 8vw, 44px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--snow);
}

.page-faq .faq-lede {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(247, 251, 255, .82);
}

.page-faq .faq-hero-aside {
  display: grid;
  gap: 12px;
  padding: 18px 18px 18px 20px;
  background: rgba(7, 26, 38, .52);
  border-left: 3px solid var(--lime);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.page-faq .faq-aside-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 10px;
  margin: 0;
  padding-bottom: 10px;
  font-size: 14px;
  border-bottom: 1px dashed rgba(247, 251, 255, .16);
}

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

.page-faq .faq-aside-label {
  color: rgba(247, 251, 255, .62);
}

.page-faq .faq-aside-value {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--lime);
  letter-spacing: .02em;
}

.page-faq .faq-dot {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  background: var(--lime);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
  animation: faq-pulse 2.4s ease-in-out infinite;
}

@keyframes faq-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .32; }
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: 9px 15px;
  font-size: 14px;
  line-height: 1.3;
  color: var(--snow);
  text-decoration: none;
  background: rgba(247, 251, 255, .08);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: background .18s ease, color .18s ease;
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  background: var(--orange);
  color: var(--ink);
}

/* ---------- 档案区块 ---------- */

.page-faq .faq-block {
  margin-top: 52px;
  scroll-margin-top: calc(var(--h-header) + 24px);
}

.page-faq .faq-block-head {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 14px;
  row-gap: 6px;
  align-items: start;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-index {
  grid-row: 1 / span 2;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--orange);
}

.page-faq .faq-block-title {
  grid-column: 2;
  margin: 0;
  font-size: clamp(21px, 5vw, 30px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--snow);
}

.page-faq .faq-block-sub {
  grid-column: 2;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(247, 251, 255, .7);
}

/* ---------- 手风琴 ---------- */

.page-faq .qa-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.page-faq .qa-item {
  background: rgba(242, 233, 216, .06);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: background .2s ease;
}

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

.page-faq .qa-q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--snow);
  transition: color .2s ease;
}

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

.page-faq .qa-q::marker {
  content: "";
}

.page-faq .qa-q:hover {
  color: var(--orange-hi);
}

.page-faq .qa-item[open] .qa-q,
.page-faq .qa-item[open] .qa-q:hover {
  color: var(--ink);
}

.page-faq .qa-q-text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa-q-icon {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border: 1px solid currentColor;
  clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 6px 100%, 0 calc(100% - 6px));
}

.page-faq .qa-q-icon::before,
.page-faq .qa-q-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: currentColor;
  transform: translate(-50%, -50%);
}

.page-faq .qa-q-icon::before {
  width: 9px;
  height: 2px;
}

.page-faq .qa-q-icon::after {
  width: 2px;
  height: 9px;
  transition: transform .2s ease, opacity .2s ease;
}

.page-faq .qa-item[open] .qa-q-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.page-faq .qa-a {
  padding: 0 18px 18px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink);
}

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

.page-faq .qa-a p:last-child {
  margin-bottom: 0;
}

.page-faq .qa-a a {
  color: var(--lake-2);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .qa-a a:hover {
  color: var(--orange);
}

.page-faq .qa-tag {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--ink);
  background: var(--lime);
}

.page-faq .qa-steps {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: qa-step;
  display: grid;
  gap: 8px;
}

.page-faq .qa-steps li {
  position: relative;
  padding-left: 30px;
  counter-increment: qa-step;
}

.page-faq .qa-steps li::before {
  content: counter(qa-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--orange);
}

/* ---------- 图示 ---------- */

.page-faq .faq-figure {
  margin: 22px 0 0;
  padding: 0;
  background: rgba(11, 60, 93, .55);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  overflow: hidden;
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px 12px;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(247, 251, 255, .74);
  background: rgba(7, 26, 38, .68);
}

/* ---------- 联系支持 ---------- */

.page-faq .faq-support-pair {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.page-faq .faq-contact-card {
  padding: 22px 20px;
  background: var(--paper);
  color: var(--ink);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.page-faq .faq-contact-title {
  margin: 0 0 14px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-contact-list {
  margin: 0;
  padding: 0;
}

.page-faq .faq-contact-item {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 8px 12px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line-dark);
}

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

.page-faq .faq-contact-item dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--orange);
  padding-top: 3px;
}

.page-faq .faq-contact-item dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-2);
  word-break: break-word;
}

.page-faq .faq-contact-more {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-dark);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-2);
}

.page-faq .faq-contact-more a {
  color: var(--lake-2);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .faq-contact-more a:hover {
  color: var(--orange);
}

.page-faq .faq-figure--side {
  margin-top: 0;
}

/* ---------- 焦点反馈 ---------- */

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.page-faq .qa-item[open] summary:focus-visible {
  outline-color: var(--lake-2);
}

/* ---------- 桌面布局 ---------- */

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

  .page-faq .faq-hero-frame {
    padding: 38px 44px 44px;
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
    margin-top: 26px;
  }

  .page-faq .faq-title {
    font-size: clamp(44px, 5.2vw, 62px);
  }

  .page-faq .faq-jump {
    margin-top: 30px;
  }

  .page-faq .faq-block {
    margin-top: 68px;
  }

  .page-faq .qa-list {
    margin-top: 22px;
  }

  .page-faq .qa-q {
    padding: 18px 22px;
    font-size: 17px;
  }

  .page-faq .qa-a {
    padding: 0 22px 20px;
    max-width: 74ch;
  }

  .page-faq .faq-figure {
    max-width: 720px;
  }

  .page-faq .faq-support-pair {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 22px;
    align-items: stretch;
  }

  .page-faq .faq-figure--side {
    max-width: none;
    margin-top: 0;
    height: 100%;
  }

  .page-faq .faq-figure--side img {
    height: 100%;
    min-height: 260px;
  }
}

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

  .page-faq .qa-item,
  .page-faq .qa-q,
  .page-faq .qa-q-icon::after,
  .page-faq .faq-jump a {
    transition: none;
  }
}