.page-faq {
  --faq-rail: clamp(0rem, 8vw, 6.5rem);
  background: var(--bg);
  color: var(--ink);
  overflow-x: clip;
}

.page-faq a {
  color: inherit;
  text-decoration-color: rgba(198, 242, 78, .6);
  text-underline-offset: 3px;
}

.page-faq a:hover {
  color: var(--neon-soft);
}

.page-faq .breadcrumbs {
  padding: clamp(1.1rem, 3vw, 1.8rem) 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mute);
}

.page-faq .breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 0;
  padding: 0;
}

.page-faq .breadcrumbs li + li::before {
  content: "/";
  margin-right: .4rem;
  color: var(--line);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.8rem, 5vw, 4rem) 0 clamp(2.6rem, 6vw, 5rem);
  background:
    radial-gradient(120% 90% at 88% 10%, rgba(30, 111, 92, .58), transparent 62%),
    linear-gradient(150deg, #0C1A16 0%, #0A1412 62%, #0A0C0B 100%);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -16%;
  width: min(58vw, 640px);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 40% 40%, rgba(198, 242, 78, .14), transparent 66%);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.8rem, 4.5vw, 3.2rem);
}

.page-faq h1 {
  margin: .55rem 0 1rem;
  font-size: clamp(1.85rem, 5.2vw, 3.5rem);
  line-height: 1.14;
  font-weight: 700;
  letter-spacing: -0.02em;
  max-width: 19ch;
  text-wrap: balance;
}

.page-faq .faq-lead {
  max-width: 40em;
  font-size: clamp(1rem, 1.25vw, 1.09rem);
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-index-panel {
  background: rgba(10, 12, 11, .62);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .1rem;
}

.page-faq .faq-index-list li {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  align-items: center;
  gap: .6rem;
  padding: .7rem 0;
  border-bottom: 1px dashed rgba(42, 58, 54, .85);
}

.page-faq .faq-index-list li:last-child {
  border-bottom: 0;
}

.page-faq .faq-index-num {
  font-size: 12px;
  color: var(--neon);
}

.page-faq .faq-index-list a {
  font-size: .98rem;
  font-weight: 600;
  text-decoration: none;
}

.page-faq .faq-index-list a:hover {
  color: var(--neon-soft);
}

.page-faq .faq-hero-slant {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 46px;
  background: var(--bg);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}

/* ---------- 跳转条 ---------- */

.page-faq .faq-jump {
  background: var(--bg-deep);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-jump .chip-row {
  display: flex;
  gap: .55rem;
  overflow-x: auto;
  padding: .85rem 0;
  scrollbar-width: none;
}

.page-faq .faq-jump .chip-row::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-jump .chip {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  padding: .42rem .85rem;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-jump .chip:hover,
.page-faq .faq-jump .chip:focus-visible {
  color: var(--bg-deep);
  background: var(--neon);
  border-color: var(--neon);
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  position: relative;
  padding: clamp(2.4rem, 5.5vw, 4.6rem) 0 clamp(2.6rem, 6vw, 5rem);
  border-top: 1px solid var(--line);
  scroll-margin-top: 4rem;
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 78px;
  height: 2px;
  background: var(--neon);
  box-shadow: 0 0 14px rgba(198, 242, 78, .6);
  animation: faq-breathe 1.8s ease-in-out infinite;
}

@keyframes faq-breathe {
  0%, 100% { opacity: .48; }
  50% { opacity: 1; }
}

.page-faq .faq-group-head {
  max-width: 46em;
  margin-bottom: clamp(1.4rem, 3vw, 2.4rem);
}

.page-faq .faq-group-name {
  margin: .5rem 0 .7rem;
  font-size: clamp(1.45rem, 3.4vw, 2.4rem);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.015em;
  max-width: 22ch;
  text-wrap: balance;
}

.page-faq .faq-group-note {
  color: var(--ink-soft);
  font-size: .97rem;
  line-height: 1.75;
}

.page-faq .faq-slant {
  display: block;
  height: 1px;
  margin-top: clamp(2rem, 4vw, 3.4rem);
  background: linear-gradient(90deg, var(--line) 0%, transparent 70%);
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-list {
  display: grid;
  gap: 0;
}

.page-faq .faq-item {
  border-top: 1px solid var(--line);
  padding: clamp(.8rem, 1.6vw, 1.15rem) 0;
}

.page-faq .faq-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: .8rem;
  align-items: start;
  cursor: pointer;
  list-style: none;
  padding: .35rem 0;
  max-width: 42em;
  color: var(--ink);
  transition: color .2s var(--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(--neon-soft);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 4px;
}

.page-faq .faq-q-num {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--neon);
  padding-top: .35rem;
}

.page-faq .faq-q-text {
  font-size: clamp(1.02rem, 1.9vw, 1.24rem);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -0.01em;
}

.page-faq .faq-mark {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: .38rem;
  flex: none;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--mute);
  transition: transform .26s var(--ease), background .26s var(--ease);
}

.page-faq .faq-mark::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-mark::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
}

.page-faq .faq-item[open] .faq-mark::before,
.page-faq .faq-item[open] .faq-mark::after {
  background: var(--neon);
}

.page-faq .faq-item[open] .faq-mark::after {
  transform: scaleY(0);
}

.page-faq .faq-a {
  margin-top: .7rem;
  max-width: 44em;
  color: var(--ink-soft);
  font-size: .97rem;
  line-height: 1.8;
  animation: faq-drop .34s var(--ease);
}

.page-faq .faq-a p {
  margin: 0 0 .7rem;
}

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

.page-faq .faq-a a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 242, 78, .42);
}

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

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

/* ---------- 配图 ---------- */

.page-faq .faq-figure {
  margin: 0 0 clamp(1.4rem, 3vw, 2.2rem);
}

.page-faq .photo-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(140deg, rgba(30, 111, 92, .38), rgba(10, 12, 11, .9));
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

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

.page-faq .photo-frame--wide {
  aspect-ratio: 12 / 7;
}

.page-faq .photo-frame--tall {
  aspect-ratio: 11 / 8;
}

.page-faq .faq-figure--wide {
  max-width: 880px;
}

.page-faq .photo-cap {
  margin-top: .6rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--mute);
}

.page-faq .faq-figure-split {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.8rem);
}

/* ---------- 收尾联系 ---------- */

.page-faq .faq-group--contact {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(30, 111, 92, .16), transparent 72%);
}

.page-faq .faq-contact-panel {
  background: rgba(10, 12, 11, .66);
  border: 1px solid var(--line);
  clip-path: polygon(0 var(--cut), var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-faq .faq-contact-lead {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 42em;
  margin: 0 0 1.1rem;
}

.page-faq .faq-tips {
  list-style: none;
  margin: 0 0 1.6rem;
  padding: 0;
  display: grid;
  gap: .7rem;
}

.page-faq .faq-tips li {
  display: grid;
  grid-template-columns: 1.6rem 1fr;
  gap: .7rem;
  align-items: start;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-faq .faq-tip-num {
  font-size: 11px;
  color: var(--yellow);
  letter-spacing: .1em;
  padding-top: .28rem;
}

.page-faq .faq-contact-list {
  display: grid;
  gap: .1rem;
  border-top: 1px solid var(--line);
  margin-bottom: 1.1rem;
}

.page-faq .faq-contact-list .contact-row {
  display: grid;
  gap: .2rem .9rem;
  padding: .75rem 0;
  border-bottom: 1px solid rgba(42, 58, 54, .7);
}

.page-faq .faq-contact-list .contact-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--mute);
  text-transform: uppercase;
}

.page-faq .faq-contact-list .contact-val {
  font-size: .97rem;
  color: var(--ink);
  text-decoration: none;
  word-break: break-word;
}

.page-faq .faq-contact-list a.contact-val:hover {
  color: var(--neon-soft);
}

.page-faq .faq-contact-note {
  margin: 0 0 1rem;
  line-height: 1.75;
}

.page-faq .faq-contact-more {
  margin: 0;
  font-size: .95rem;
  color: var(--ink-soft);
}

.page-faq .link-more {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 242, 78, .45);
}

.page-faq .link-more::after {
  content: " →";
}

.page-faq .link-more:hover {
  color: var(--neon-soft);
  border-bottom-color: var(--neon-soft);
}

/* ---------- 入场动效 ---------- */

.page-faq .reveal {
  transition: opacity .4s var(--ease), transform .4s var(--ease);
}

.page-faq .has-js .reveal {
  opacity: 0;
  transform: translateY(12px);
}

.page-faq .has-js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-contact-list .contact-row {
    grid-template-columns: 8.5rem 1fr;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(2rem, 6vw, 5rem);
  }

  .page-faq .faq-a {
    margin-left: var(--faq-rail);
    padding-left: clamp(1rem, 2.4vw, 2rem);
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-figure-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-figure--side {
    margin-bottom: 0;
    position: sticky;
    top: 2.5rem;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-a {
    max-width: 40em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-group::before {
    animation: none;
    opacity: .85;
  }

  .page-faq .faq-a {
    animation: none;
  }

  .page-faq .has-js .reveal,
  .page-faq .has-js .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after {
    transition: none;
  }
}