.page-faq {
  --faq-line: rgba(42, 174, 155, .26);
  --faq-line-strong: rgba(0, 229, 195, .48);
  --faq-card: rgba(18, 53, 42, .82);
  --faq-card-soft: rgba(18, 53, 42, .46);
  display: block;
  padding-bottom: clamp(2rem, 6vw, 4rem);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  padding-top: 1.25rem;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(1.5rem, 3.5vw, 2.5rem) 0 clamp(1.75rem, 4.5vw, 3rem);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -52%;
  right: -16%;
  width: min(780px, 92vw);
  height: 180%;
  z-index: -1;
  border-radius: 46% 54% 34% 66% / 58% 42% 58% 42%;
  background:
    linear-gradient(155deg, rgba(0, 229, 195, .22), rgba(0, 229, 195, 0) 58%),
    linear-gradient(20deg, rgba(255, 59, 78, .13), rgba(255, 59, 78, 0) 60%);
  transform: rotate(-14deg);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -8%;
  bottom: -38%;
  width: min(420px, 62vw);
  height: min(420px, 62vw);
  z-index: -1;
  border-radius: 62% 38% 55% 45% / 45% 62% 38% 55%;
  background: radial-gradient(circle at 40% 40%, rgba(0, 229, 195, .16), rgba(0, 229, 195, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero__title {
  margin: 1rem 0 1.15rem;
  max-width: 17em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.05rem, 6.4vw, 4.05rem);
  line-height: 1.07;
  letter-spacing: -.015em;
  color: var(--white);
}

.page-faq .faq-hero__intro {
  max-width: 47ch;
  margin: 0;
  font-size: clamp(.98rem, 1.6vw, 1.075rem);
  line-height: 1.85;
  color: var(--grey);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .7rem;
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__meta li {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .4rem .85rem;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  background: var(--faq-card-soft);
  font-size: .82rem;
}

.page-faq .faq-hero__k {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .05em;
  color: var(--cyan);
}

.page-faq .faq-hero__v {
  color: var(--white);
}

/* ---------- 分类跳转 ---------- */
.page-faq .faq-jump {
  display: flex;
  gap: .5rem;
  padding-top: .25rem;
  padding-bottom: 1.6rem;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-jump__item {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .5rem .9rem;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  background: rgba(6, 18, 13, .55);
  color: var(--white);
  font-size: .86rem;
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease, transform .2s ease;
}

.page-faq .faq-jump__item span {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .74rem;
  color: var(--cyan);
}

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

/* ---------- 章节骨架 ---------- */
.page-faq .faq-block {
  position: relative;
  padding-top: clamp(1.9rem, 4.6vw, 3.4rem);
  padding-bottom: clamp(1.9rem, 4.6vw, 3.4rem);
}

.page-faq .faq-block + .faq-block {
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .4rem .9rem;
  margin-bottom: 1.4rem;
}

.page-faq .faq-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-faq .faq-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 3.4vw, 2.05rem);
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .faq-head__sub {
  flex: 1 1 100%;
  margin: 0;
  max-width: 50ch;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--grey);
}

.page-faq .faq-block__grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 960px) {
  .page-faq .faq-block__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
    gap: 2.4rem;
  }

  .page-faq .faq-block__grid--flip {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  }
}

/* ---------- 问答折叠面板 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: .7rem;
}

@media (min-width: 780px) {
  .page-faq .faq-list--two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }
}

.page-faq .qa {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, var(--faq-card), rgba(6, 18, 13, .74));
  transition: border-color .22s ease, box-shadow .22s ease;
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--line);
  opacity: .5;
  transition: opacity .22s ease, background .22s ease;
}

.page-faq .qa:hover {
  border-color: rgba(0, 229, 195, .34);
}

.page-faq .qa[open] {
  border-color: var(--faq-line-strong);
  box-shadow: 0 20px 42px -32px rgba(0, 229, 195, .7);
}

.page-faq .qa[open]::before {
  opacity: 1;
  background: var(--cyan);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: .95rem 1.05rem;
  list-style: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--white);
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q:hover {
  color: var(--cyan-bright);
}

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

.page-faq .qa__i {
  flex: 0 0 auto;
  padding-top: .35rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--cyan);
}

.page-faq .qa__sign {
  position: relative;
  flex: 0 0 auto;
  width: 1.3rem;
  height: 1.3rem;
  margin-left: auto;
  margin-top: .15rem;
  border: 1px solid var(--faq-line);
  border-radius: 50%;
  transition: transform .25s ease, border-color .25s ease;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  left: 22%;
  right: 22%;
  top: 50%;
  height: 1px;
  background: var(--cyan);
  transform: translateY(-50%);
}

.page-faq .qa__sign::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .qa[open] .qa__sign {
  transform: rotate(135deg);
  border-color: var(--faq-line-strong);
}

.page-faq .qa__a {
  padding: 0 1.05rem 1.05rem 2.75rem;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--grey);
}

.page-faq .qa__a p {
  margin: 0;
}

.page-faq .qa__a p + p {
  margin-top: .55rem;
}

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 195, .42);
}

.page-faq .qa__a a:hover {
  color: var(--cyan-bright);
}

/* ---------- 提示条 ---------- */
.page-faq .faq-note {
  margin: 1.35rem 0 0;
  padding: .9rem 1.1rem;
  border-left: 2px solid var(--gold);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(255, 209, 102, .07);
  font-size: .92rem;
  line-height: 1.78;
  color: var(--white);
}

.page-faq .faq-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 195, .42);
}

.page-faq .faq-note a:hover {
  color: var(--cyan-bright);
}

/* ---------- 数据面板 ---------- */
.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: .7rem;
  margin-bottom: 1.5rem;
}

.page-faq .faq-stats .stat {
  padding: .95rem 1.05rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  background: linear-gradient(170deg, rgba(18, 53, 42, .8), rgba(6, 18, 13, .6));
}

.page-faq .faq-stats .stat__num {
  display: block;
  margin-bottom: .35rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: -.01em;
}

.page-faq .faq-stats .stat__label {
  display: block;
  font-size: .82rem;
  line-height: 1.65;
  color: var(--grey);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  background: var(--ink-deep);
}

.page-faq .faq-media--tall {
  aspect-ratio: 3 / 4;
}

.page-faq .faq-media--wide {
  aspect-ratio: 7 / 4;
}

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

.page-faq .faq-cap {
  margin-top: .7rem;
  font-size: .82rem;
  line-height: 1.7;
  color: var(--grey);
}

/* ---------- 联系方式面板 ---------- */
.page-faq .faq-contact {
  margin-top: 1.4rem;
  padding: 1.15rem 1.25rem 1.25rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  background:
    linear-gradient(150deg, rgba(0, 229, 195, .1), rgba(0, 229, 195, 0) 62%),
    rgba(6, 18, 13, .72);
}

.page-faq .faq-contact__title {
  margin: 0 0 .9rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-faq .faq-contact__list {
  margin: 0;
  display: grid;
  gap: .55rem;
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  gap: .2rem .9rem;
  align-items: baseline;
  padding-bottom: .5rem;
  border-bottom: 1px dashed rgba(42, 174, 155, .28);
}

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

.page-faq .faq-contact__k {
  flex: 0 0 auto;
  min-width: 4.5rem;
  font-size: .84rem;
  color: var(--grey);
}

.page-faq .faq-contact__v {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .92rem;
  color: var(--white);
  word-break: break-all;
}

.page-faq .faq-contact__note {
  margin: 1rem 0 0;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--grey);
}

.page-faq .faq-contact__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 195, .42);
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin-top: 1.15rem;
}

@media (max-width: 599px) {
  .page-faq .faq-contact__actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa::before,
  .page-faq .qa__sign,
  .page-faq .faq-jump__item {
    transition: none;
  }

  .page-faq .faq-jump__item:hover {
    transform: none;
  }
}