/* ===== 常见问答页 ===== */
.page-faq {
  --faq-aside: 300px;
  --faq-answer: rgba(242, 237, 227, .78);
  padding-bottom: clamp(3rem, 8vw, 5.5rem);
}

/* --- 首屏 --- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--grid);
  background:
    radial-gradient(880px 340px at 86% -20%, rgba(34, 225, 200, .16), transparent 65%),
    radial-gradient(560px 300px at 6% 108%, rgba(255, 107, 44, .09), transparent 72%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .3;
  background-image:
    linear-gradient(to right, rgba(46, 58, 68, .7) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 58, 68, .7) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 85%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 85%);
}

.page-faq .faq-hero .breadcrumb {
  position: relative;
  z-index: 1;
  padding-top: clamp(1rem, 3vw, 1.6rem);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.8rem, 5vw, 3.2rem);
  padding: clamp(1.6rem, 5vw, 3rem) 0 clamp(2.2rem, 6vw, 3.6rem);
}

.page-faq .faq-hero__text {
  max-width: 46rem;
}

.page-faq .faq-hero h1 {
  margin: .7rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.72rem, 5.6vw, 3rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-faq .faq-hero .lead {
  margin-top: 1.1rem;
  color: var(--faq-answer);
  font-family: var(--font-serif);
  font-size: clamp(.98rem, 2.4vw, 1.1rem);
  line-height: 1.85;
  max-width: 40em;
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .9rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
  font-size: .84rem;
  color: var(--mist);
}

.page-faq .faq-hero__facts li {
  padding: .3rem .7rem;
  border: 1px solid var(--grid-soft);
  background: rgba(19, 42, 65, .5);
}

.page-faq .faq-hero__facts .mono {
  color: var(--cyan);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.7rem;
}

.page-faq .faq-hero__art {
  margin: 0;
  border: 1px solid var(--grid);
  background: var(--ink-2);
  padding: 6px;
}

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

/* --- 正文两栏 --- */
.page-faq .faq-body__layout {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.8rem);
  padding-top: clamp(2rem, 5vw, 3.4rem);
}

/* --- 主题索引 --- */
.page-faq .faq-index {
  border: 1px solid var(--grid);
  background: linear-gradient(180deg, rgba(19, 42, 65, .92), rgba(11, 26, 43, .55));
  padding: 1.1rem 1.1rem 1.2rem;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: .9rem 0 0;
  padding: 0;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding: .72rem .2rem .72rem 0;
  border-top: 1px solid var(--grid-soft);
  border-left: 2px solid transparent;
  padding-left: .6rem;
  text-decoration: none;
  color: var(--paper);
  font-size: .95rem;
  transition: color .18s ease, border-left-color .18s ease, background-color .18s ease;
}

.page-faq .faq-index__list li:first-child .faq-index__link {
  border-top-color: var(--grid);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: var(--cyan-dim);
  outline: none;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--cyan);
  min-width: 1.9rem;
}

.page-faq .faq-index__label {
  line-height: 1.5;
}

.page-faq .faq-index__note {
  margin: 1rem 0 0;
  font-size: .78rem;
  line-height: 1.7;
  color: var(--mist);
}

/* --- 问题分组 --- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(2.4rem, 5vw, 3.8rem);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding-bottom: .8rem;
  margin-bottom: 1.1rem;
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-group__num {
  font-size: .82rem;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3.4vw, 1.62rem);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-faq .faq-group--fees .faq-group__num {
  color: var(--gold);
}

.page-faq .faq-group--fees .faq-group__head {
  border-bottom-color: rgba(232, 183, 90, .55);
}

.page-faq .faq-group--desktop .faq-group__num {
  color: var(--orange);
}

.page-faq .faq-group--desktop .faq-group__head {
  border-bottom-color: rgba(255, 107, 44, .45);
}

.page-faq .faq-group--support .faq-group__num {
  color: var(--moss);
}

.page-faq .faq-group--support .faq-group__head {
  border-bottom-color: rgba(143, 174, 133, .5);
}

/* --- 折叠条目 --- */
.page-faq .faq-group__items {
  display: grid;
  gap: .55rem;
}

.page-faq .faq-item {
  border: 1px solid var(--grid);
  border-left: 3px solid var(--grid);
  background: linear-gradient(180deg, rgba(19, 42, 65, .6), rgba(11, 26, 43, .3));
  transition: border-left-color .2s ease, background-color .2s ease;
}

.page-faq .faq-item:hover {
  border-left-color: var(--mist);
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  background: linear-gradient(180deg, rgba(19, 42, 65, .82), rgba(11, 26, 43, .45));
}

.page-faq .faq-group--fees .faq-item[open] {
  border-left-color: var(--gold);
}

.page-faq .faq-group--desktop .faq-item[open] {
  border-left-color: var(--orange);
}

.page-faq .faq-group--support .faq-item[open] {
  border-left-color: var(--moss);
}

.page-faq .faq-item__q {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 1rem 3rem 1rem 1.05rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.65;
  color: var(--paper);
}

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

.page-faq .faq-item__q::after {
  content: "";
  position: absolute;
  right: 1.2rem;
  top: 50%;
  width: .55rem;
  height: .55rem;
  border-right: 1px solid var(--cyan);
  border-bottom: 1px solid var(--cyan);
  transform: translateY(-70%) rotate(45deg);
  transition: transform .22s ease;
}

.page-faq .faq-group--fees .faq-item__q::after {
  border-color: var(--gold);
}

.page-faq .faq-group--desktop .faq-item__q::after {
  border-color: var(--orange);
}

.page-faq .faq-group--support .faq-item__q::after {
  border-color: var(--moss);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: translateY(-30%) rotate(-135deg);
}

.page-faq .faq-item__q:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__a {
  padding: .9rem 1.05rem 1.15rem;
  border-top: 1px solid var(--grid-soft);
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.8;
  color: var(--faq-answer);
}

.page-faq .faq-item__a p + p {
  margin-top: .6rem;
}

.page-faq .faq-item__lead {
  color: var(--paper);
  font-weight: 600;
  padding-left: .7rem;
  border-left: 2px solid var(--cyan);
}

.page-faq .faq-group--fees .faq-item__lead {
  border-left-color: var(--gold);
}

.page-faq .faq-group--desktop .faq-item__lead {
  border-left-color: var(--orange);
}

.page-faq .faq-group--support .faq-item__lead {
  border-left-color: var(--moss);
}

/* --- 费用速览卡 --- */
.page-faq .faq-fee-summary {
  display: grid;
  gap: clamp(1.1rem, 3vw, 1.8rem);
  margin-top: 1.6rem;
  padding: clamp(1.1rem, 3.5vw, 1.7rem);
  border: 1px solid var(--gold);
  background:
    linear-gradient(180deg, rgba(232, 183, 90, .09), rgba(11, 26, 43, .25)),
    var(--ink-2);
}

.page-faq .faq-fee-summary__main h3 {
  margin: .6rem 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 3vw, 1.4rem);
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-fee-rows {
  border-top: 1px solid rgba(232, 183, 90, .4);
}

.page-faq .faq-fee-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: .25rem .9rem;
  padding: .7rem 0;
  border-bottom: 1px solid var(--grid-soft);
}

.page-faq .faq-fee-row__label {
  font-size: .9rem;
  color: var(--paper);
}

.page-faq .faq-fee-row__value {
  font-size: 1.05rem;
  color: var(--gold);
  letter-spacing: .02em;
  white-space: nowrap;
}

.page-faq .faq-fee-row__meta {
  grid-column: 1 / -1;
  font-size: .78rem;
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .faq-fee-summary__cta {
  margin: 1.2rem 0 0;
}

.page-faq .faq-fee-summary__visual {
  margin: 0;
}

.page-faq .faq-fee-summary__visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--grid);
  object-fit: cover;
}

.page-faq .faq-fee-summary__visual figcaption {
  margin-top: .6rem;
  font-size: .78rem;
  line-height: 1.7;
  color: var(--mist);
}

/* --- 收束条 --- */
.page-faq .faq-end {
  margin-top: clamp(2.2rem, 5vw, 3.2rem);
  padding: clamp(1.1rem, 3vw, 1.5rem);
  border: 1px solid var(--grid);
  border-top: 3px solid var(--cyan);
  background: rgba(19, 42, 65, .45);
}

.page-faq .faq-end__text {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--faq-answer);
}

.page-faq .faq-end__links {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem 1.4rem;
  margin-top: 1rem;
}

.page-faq .faq-end__links a {
  font-size: .88rem;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 225, 200, .4);
  padding-bottom: 2px;
}

.page-faq .faq-end__links a:hover,
.page-faq .faq-end__links a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* --- 断点 --- */
@media (min-width: 760px) {
  .page-faq .faq-fee-summary {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body__layout {
    grid-template-columns: var(--faq-aside) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 1.4rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__q::after,
  .page-faq .faq-index__link {
    transition: none;
  }
}