.page-faq {
  --faq-pad: clamp(1.15rem, 2.6vw, 2rem);
  --faq-gap: clamp(2.5rem, 5.5vw, 4.5rem);
  --faq-anchor: calc(var(--header-h) + 1.5rem);
  padding-bottom: clamp(2.5rem, 7vw, 5.5rem);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(1.75rem, 5vw, 3.5rem);
  padding-bottom: clamp(1.75rem, 4vw, 3rem);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -35% 35% 25% -30%;
  z-index: 0;
  background:
    radial-gradient(circle at 32% 38%, rgba(34, 230, 224, .18), transparent 62%),
    radial-gradient(circle at 78% 15%, rgba(255, 75, 43, .13), transparent 58%);
  pointer-events: none;
}

.page-faq .faq-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .display--sm {
  margin: .8rem 0 0;
  max-width: 20ch;
}

.page-faq .faq-hero .lede {
  margin-top: 1.1rem;
  max-width: 52ch;
}

.page-faq .faq-quick {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.page-faq .faq-jump {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .5rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(20, 27, 61, .62);
  color: var(--text);
  font-size: .85rem;
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease, transform .2s ease;
}

.page-faq .faq-jump .num {
  color: var(--cyan);
  font-size: .74rem;
  letter-spacing: .06em;
}

.page-faq .faq-jump:hover,
.page-faq .faq-jump:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

/* 两栏骨架 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: clamp(2.5rem, 5vw, 4rem);
  }
}

/* 左侧索引 */
.page-faq .faq-index {
  border-top: 2px solid var(--cyan);
  padding-top: 1rem;
}

@media (min-width: 960px) {
  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-anchor);
    border-top: none;
    border-left: 2px solid rgba(34, 230, 224, .5);
    padding: 0 0 0 1rem;
  }
}

.page-faq .faq-index__title {
  margin: 0 0 .85rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index ol {
  display: flex;
  flex-wrap: wrap;
  gap: .1rem .6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 960px) {
  .page-faq .faq-index ol {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: .1rem;
  }
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: .55rem;
  padding: .5rem .6rem;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: .93rem;
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(34, 230, 224, .1), transparent 85%);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--cyan);
  letter-spacing: .06em;
}

.page-faq .faq-index__hint {
  margin: 1.1rem 0 0;
  padding-top: .9rem;
  border-top: 1px solid var(--line-soft);
  font-size: .82rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-index__hint a {
  display: inline;
  padding: 0;
  border: none;
  background: none;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: .78rem;
  word-break: break-all;
}

.page-faq .faq-index__hint a:hover {
  border: none;
  background: none;
  text-decoration: underline;
}

/* 分组 */
.page-faq .faq-group {
  scroll-margin-top: var(--faq-anchor);
}

.page-faq .faq-group + .faq-group {
  margin-top: var(--faq-gap);
}

.page-faq .faq-panel {
  position: relative;
  padding: var(--faq-pad);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(20, 27, 61, .55);
  overflow: hidden;
}

.page-faq .faq-group--teal .faq-panel {
  background: linear-gradient(158deg, rgba(6, 50, 58, .92), rgba(20, 27, 61, .88) 62%, rgba(5, 11, 26, .94));
  border-color: rgba(34, 230, 224, .24);
}

.page-faq .faq-group--indigo .faq-panel {
  background: linear-gradient(158deg, rgba(20, 27, 61, .96), rgba(5, 11, 26, .94));
  border-color: rgba(159, 247, 242, .16);
}

.page-faq .faq-group--wine .faq-panel {
  background: linear-gradient(158deg, rgba(74, 15, 42, .82), rgba(20, 27, 61, .92) 58%, rgba(5, 11, 26, .94));
  border-color: rgba(255, 75, 43, .22);
}

.page-faq .faq-panel::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 78px;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--ember));
}

.page-faq .faq-group__head {
  max-width: 60ch;
}

.page-faq .faq-group__head h2 {
  margin: .55rem 0 .7rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-group__head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
  font-size: .96rem;
}

/* 三步流程 */
.page-faq .faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: .8rem;
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 720px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .faq-steps li {
  position: relative;
  padding: 1.05rem 1.05rem 1.05rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(5, 11, 26, .6);
}

.page-faq .faq-steps li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .9rem;
  bottom: .9rem;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, var(--cyan), var(--ember));
}

.page-faq .faq-steps .num {
  display: block;
  font-size: .78rem;
  letter-spacing: .12em;
  margin-bottom: .35rem;
}

.page-faq .faq-steps strong {
  display: block;
  font-size: .98rem;
  color: var(--paper);
}

.page-faq .faq-steps p {
  margin: .35rem 0 0;
  font-size: .88rem;
  line-height: 1.7;
  color: var(--muted);
}

/* 图片 */
.page-faq .faq-media {
  margin: 1.6rem 0 0;
}

.page-faq .faq-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--line-soft);
}

/* 问题类型 */
.page-faq .faq-type-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: .8rem;
  margin-top: 1.5rem;
}

@media (min-width: 720px) {
  .page-faq .faq-type-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .faq-type {
  padding: 1.05rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(5, 11, 26, .5);
}

.page-faq .faq-type h3 {
  margin: 0 0 .4rem;
  font-size: .98rem;
  color: var(--cyan-soft);
  letter-spacing: .01em;
}

.page-faq .faq-type p {
  margin: 0;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--muted);
}

/* 提示条 */
.page-faq .faq-note {
  margin: 1.5rem 0 0;
  padding: .95rem 1.1rem;
  border-left: 3px solid var(--ember);
  border-radius: 0 10px 10px 0;
  background: rgba(255, 75, 43, .08);
  font-size: .9rem;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-note a {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: .84rem;
  word-break: break-all;
}

/* 折叠问答 */
.page-faq .faq-item {
  margin-top: 1rem;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: .95rem 0;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
  transition: color .2s ease;
}

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

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

.page-faq .faq-item > summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  line-height: 1;
  color: var(--cyan);
  transition: transform .25s ease;
}

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

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

.page-faq .faq-item__body {
  padding: 0 0 1.1rem;
}

.page-faq .faq-item[open] .faq-item__body {
  padding-left: 1rem;
  border-left: 2px solid var(--cyan);
  animation: faq-flow .6s ease-out both;
}

.page-faq .faq-item__body p {
  margin: 0 0 .6rem;
  max-width: 62ch;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--muted);
}

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

@keyframes faq-flow {
  from {
    opacity: 0;
    transform: translateX(-8px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.page-faq .faq-more {
  margin: 1.4rem 0 0;
  font-size: .88rem;
  color: var(--muted);
}

.page-faq .faq-more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 230, 224, .4);
}

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

/* 收尾 */
.page-faq .faq-cta {
  position: relative;
  margin-top: var(--faq-gap);
}

.page-faq .faq-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(120deg, rgba(6, 50, 58, .55), rgba(74, 15, 42, .4) 70%, transparent);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  pointer-events: none;
}

.page-faq .faq-cta__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: center;
}

@media (min-width: 860px) {
  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 2.5rem;
  }
}

.page-faq .faq-cta__inner h2 {
  margin: .5rem 0 .6rem;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3.2vw, 2.1rem);
  line-height: 1.18;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-cta__inner p {
  margin: 0;
  max-width: 54ch;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__body {
    animation: none;
  }
  .page-faq .faq-jump:hover,
  .page-faq .faq-jump:focus-visible {
    transform: none;
  }
}