.page-faq {
  --faq-line: var(--cyan);
  overflow-x: clip;
  max-width: var(--max-w);
  margin-inline: auto;
  padding: clamp(20px, 3.5vw, 40px) var(--pad-x) clamp(72px, 9vw, 120px);
  color: var(--text);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: end;
  margin-bottom: clamp(48px, 7vw, 88px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -8% -6% -14% -10%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 76% at 12% 8%, rgba(46, 242, 190, 0.16), transparent 70%),
    linear-gradient(135deg, rgba(162, 107, 255, 0.13) 0%, transparent 44%, rgba(91, 61, 245, 0.16) 100%);
  clip-path: polygon(0 0, 78% 0, 100% 34%, 100% 100%, 16% 100%, 0 66%);
}

.page-faq .faq-hero__copy {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-faq .faq-hero__copy .breadcrumb {
  margin-bottom: 4px;
}

.page-faq .faq-hero__copy h1 {
  margin: 0;
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(18, 30, 51, 0.72);
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--text);
  border-color: rgba(46, 242, 190, 0.55);
  background: rgba(46, 242, 190, 0.1);
}

.page-faq .faq-jump__n {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-hero__meta {
  margin: 4px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--text-mute);
}

.page-faq .faq-hero__meta .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .faq-hero__art {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  aspect-ratio: 9 / 5;
  box-shadow: var(--shadow-card);
}

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

/* ---------- 三栏折叠瀑布 ---------- */

.page-faq .faq-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.4vw, 28px);
  align-items: start;
}

.page-faq .faq-col {
  position: relative;
  padding: 20px 18px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(18, 30, 51, 0.92), rgba(11, 20, 36, 0.72));
  overflow: hidden;
  scroll-margin-top: calc(var(--cmd-h) + 20px);
}

.page-faq .faq-col::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--faq-line), transparent 78%);
}

.page-faq .faq-col--fee { --faq-line: var(--cyan); }
.page-faq .faq-col--data { --faq-line: var(--orange); }
.page-faq .faq-col--account { --faq-line: var(--violet); }

.page-faq .faq-col__head {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding-bottom: 14px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-col__idx {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
  letter-spacing: 0.18em;
  color: var(--faq-line);
  padding-top: 2px;
}

.page-faq .faq-col__title {
  flex: 1 1 auto;
  margin: 0;
  font-size: 19px;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.page-faq .faq-col__count {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  color: var(--text-mute);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 9px;
  white-space: nowrap;
}

.page-faq .faq-col__sub {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 22px 0 4px;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--text);
}

.page-faq .faq-col__sub::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--faq-line);
  color: var(--faq-line);
  box-shadow: 0 0 10px currentColor;
}

.page-faq .faq-col__art {
  margin: 14px 0 6px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  aspect-ratio: 7 / 5;
}

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

/* ---------- 折叠问答 ---------- */

.page-faq .faq-list {
  display: grid;
}

.page-faq .faq-item {
  border-bottom: 1px solid rgba(42, 59, 88, 0.7);
}

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

.page-faq .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 15px 4px 15px 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--text);
  transition: color 0.2s ease;
}

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

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  color: var(--cyan);
}

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

.page-faq .faq-item__q {
  flex: 1 1 auto;
}

.page-faq .faq-item__arrow {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  opacity: 0.75;
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.2s ease;
}

.page-faq .faq-item[open] .faq-item__arrow {
  transform: rotate(225deg);
  opacity: 1;
}

.page-faq .faq-item__a {
  padding: 0 4px 18px 16px;
  border-left: 2px solid transparent;
  transition: border-color 0.3s ease;
}

.page-faq .faq-item[open] .faq-item__a {
  border-left-color: var(--faq-line, var(--cyan));
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-dim);
}

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

.page-faq .num-hl {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 13.5px;
  letter-spacing: 0.01em;
  color: var(--text);
  background: rgba(46, 242, 190, 0.1);
  border-radius: 6px;
  padding: 1px 6px;
  white-space: nowrap;
}

.page-faq .faq-item__link {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(46, 242, 190, 0.35);
  transition: color 0.2s ease, border-color 0.2s ease;
}

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

/* ---------- 咨询路径 ---------- */

.page-faq .faq-help {
  margin-top: clamp(64px, 8vw, 104px);
}

.page-faq .faq-help__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2vw, 24px);
  margin-top: clamp(24px, 3vw, 36px);
}

.page-faq .faq-help__card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(18, 30, 51, 0.95), rgba(11, 20, 36, 0.62));
  overflow: hidden;
}

.page-faq .faq-help__card::after {
  content: "";
  position: absolute;
  inset: auto -32% -62% auto;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-help__card:nth-child(1)::after {
  background: radial-gradient(circle, rgba(46, 242, 190, 0.16), transparent 68%);
}

.page-faq .faq-help__card:nth-child(2)::after {
  background: radial-gradient(circle, rgba(255, 122, 47, 0.16), transparent 68%);
}

.page-faq .faq-help__card:nth-child(3)::after {
  background: radial-gradient(circle, rgba(162, 107, 255, 0.2), transparent 68%);
}

.page-faq .faq-help__card h3 {
  position: relative;
  margin: 0;
  font-size: 18px;
  line-height: 1.42;
}

.page-faq .faq-help__card p {
  position: relative;
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-faq .faq-help__acts {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
  padding-top: 10px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-help__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-help__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-faq .faq-col {
    padding: 16px 14px 10px;
  }

  .page-faq .faq-col__title {
    font-size: 17px;
  }

  .page-faq .faq-item > summary {
    font-size: 14.5px;
  }

  .page-faq .faq-item__a {
    padding-left: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__arrow,
  .page-faq .faq-item__a,
  .page-faq .faq-jump a,
  .page-faq .faq-item > summary {
    transition: none;
  }
}