/* ========== 帮助中心 · 页面专属样式 ========== */
.page-faq {
  --faq-c-fee: #F2B33D;
  --faq-c-channel: #39F07A;
  --faq-c-export: #5FBF9A;
  --faq-c-ticket: #E07A5F;
  --faq-glow: rgba(57, 240, 122, .55);
  background: var(--deep);
  color: var(--cream);
  font-family: var(--font-ui);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4vw, 42px) 0 clamp(30px, 5vw, 58px);
  background:
    radial-gradient(120% 90% at 84% -12%, rgba(57, 240, 122, .13), transparent 58%),
    radial-gradient(90% 80% at -8% 112%, rgba(242, 179, 61, .10), transparent 62%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 42px);
  margin-top: clamp(18px, 3vw, 34px);
  align-items: end;
}

.page-faq .faq-hero__text h1 {
  margin: 12px 0 18px;
  font-size: clamp(28px, 5.6vw, 52px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--cream);
  transform: skewX(-1.6deg);
  transform-origin: left bottom;
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  max-width: 40ch;
  color: var(--alu);
  font-size: clamp(14.5px, 1.6vw, 17px);
  line-height: 1.78;
}

.page-faq .faq-hero__figure {
  margin: 0;
  box-shadow: 0 34px 66px -44px var(--faq-glow);
}

@media (min-width: 920px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
    gap: clamp(34px, 4vw, 60px);
  }
}

/* ---------- 四色主题筛选条 ---------- */
.page-faq .faq-filters {
  padding: clamp(18px, 3vw, 26px) 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: linear-gradient(180deg, rgba(18, 41, 61, .62), rgba(11, 27, 43, 0));
}

.page-faq .faq-filters__label {
  margin: 0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--alu);
}

.page-faq .faq-filters__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-filter {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 18px 9px 14px;
  border: 1.5px solid var(--rule);
  border-radius: 999px;
  background: var(--inner);
  color: var(--cream);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease);
}

.page-faq .faq-filter--fee { --dot: var(--faq-c-fee); }
.page-faq .faq-filter--channel { --dot: var(--faq-c-channel); }
.page-faq .faq-filter--export { --dot: var(--faq-c-export); }
.page-faq .faq-filter--ticket { --dot: var(--faq-c-ticket); }

.page-faq .faq-filter__dot {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--dot, var(--green));
  box-shadow: 0 0 10px var(--dot, var(--green));
}

.page-faq .faq-filter:hover,
.page-faq .faq-filter:focus-visible {
  transform: translateY(-2px);
  border-color: var(--dot, var(--green));
  box-shadow: 0 10px 24px -14px var(--dot, var(--green));
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(28px, 4vw, 40px);
  padding: clamp(34px, 5vw, 66px) 0 clamp(36px, 5vw, 72px);
}

.page-faq .faq-sidebar {
  padding: 18px 16px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--inner);
  scroll-margin-top: 104px;
}

.page-faq .faq-sidebar__title {
  margin: 0 0 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--alu);
}

.page-faq .faq-sidebar__list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-sidebar__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  color: var(--alu);
  font-size: 14px;
  text-decoration: none;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-sidebar__link::before {
  content: "";
  width: 12px;
  height: 2px;
  flex: none;
  border-radius: 2px;
  background: var(--alu);
  transition: width .22s var(--ease), background .22s var(--ease);
}

.page-faq .faq-sidebar__link:hover,
.page-faq .faq-sidebar__link:focus-visible {
  background: rgba(57, 240, 122, .09);
  color: var(--cream);
}

.page-faq .faq-sidebar__link:hover::before,
.page-faq .faq-sidebar__link:focus-visible::before {
  width: 20px;
  background: var(--green);
}

.page-faq .faq-sidebar__note {
  margin: 16px 0 12px;
  padding-top: 14px;
  border-top: 1px solid var(--rule-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--alu);
}

.page-faq .faq-sidebar__cta {
  font-size: 13px;
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 62px);
    align-items: start;
  }
  .page-faq .faq-sidebar {
    position: sticky;
    top: 104px;
  }
}

/* ---------- 章节 ---------- */
.page-faq .faq-sec {
  scroll-margin-top: 100px;
}

.page-faq .faq-sec + .faq-sec {
  margin-top: clamp(38px, 5vw, 68px);
}

.page-faq .faq-sec__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--rule);
}

.page-faq .faq-sec__num {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--green);
}

.page-faq .faq-sec__title {
  margin: 0;
  font-size: clamp(21px, 3vw, 28px);
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-faq .faq-sec__count {
  margin-left: auto;
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--alu);
}

.page-faq .faq-sec__lead {
  max-width: 44ch;
  margin: 14px 0 2px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--alu);
}

/* ---------- 展签式问答 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--rule-soft);
}

.page-faq .qa__q {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 2px 17px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--cream);
  transition: color .2s var(--ease);
}

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

.page-faq .qa__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  bottom: 19px;
  width: 2px;
  border-radius: 2px;
  background: var(--rule);
  transition: background .25s var(--ease), box-shadow .25s var(--ease);
}

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

.page-faq .qa[open] > .qa__q::before {
  background: var(--green);
  box-shadow: 0 0 12px var(--faq-glow);
}

.page-faq .qa__icon {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  border: 1.5px solid var(--rule);
  border-radius: 50%;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--alu);
  transform: translate(-50%, -50%);
  transition: opacity .22s var(--ease), background .25s var(--ease);
}

.page-faq .qa__icon::before { width: 9px; height: 1.5px; }
.page-faq .qa__icon::after { width: 1.5px; height: 9px; }

.page-faq .qa[open] .qa__icon {
  border-color: var(--green);
  background: rgba(57, 240, 122, .13);
}

.page-faq .qa[open] .qa__icon::before,
.page-faq .qa[open] .qa__icon::after {
  background: var(--green);
}

.page-faq .qa[open] .qa__icon::after { opacity: 0; }

.page-faq .qa__a {
  max-width: 62ch;
  padding: 0 2px 20px 16px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--alu);
}

.page-faq .qa__a p { margin: 0 0 8px; }
.page-faq .qa__a p:last-child { margin-bottom: 0; }

.page-faq .qa[open] .qa__a {
  animation: faq-drop .28s var(--ease) both;
}

@keyframes faq-drop {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

.page-faq .faq-export__figure {
  max-width: 560px;
  margin: 22px 0 4px;
}

.page-faq .faq-sec__back {
  margin: 16px 0 0;
  font-size: 13px;
}

.page-faq .faq-sec__back a {
  color: var(--alu);
  text-decoration: none;
  border-bottom: 1px dashed var(--rule);
  padding-bottom: 2px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

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

/* ---------- 底部客服面板 ---------- */
.page-faq .faq-cta {
  padding: 0 0 clamp(48px, 7vw, 92px);
}

.page-faq .faq-cta__panel {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  padding: clamp(24px, 4vw, 42px);
  border: 2px solid var(--green);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(18, 41, 61, .97), rgba(11, 27, 43, .97));
  box-shadow: 0 44px 86px -66px var(--faq-glow);
}

.page-faq .faq-cta__title {
  margin: 12px 0 10px;
  font-size: clamp(20px, 2.8vw, 28px);
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-faq .faq-cta__text {
  max-width: 42ch;
  margin: 0 0 18px;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--alu);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-cta__list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-cta__list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 11px 14px;
  border-left: 2px solid var(--gold);
  border-radius: var(--radius-sm);
  background: rgba(143, 163, 176, .09);
}

.page-faq .faq-cta__k {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--alu);
}

.page-faq .faq-cta__v {
  font-family: var(--font-num);
  font-size: 13.5px;
  color: var(--cream);
  word-break: break-all;
}

@media (min-width: 860px) {
  .page-faq .faq-cta__panel {
    grid-template-columns: minmax(0, 1fr) 290px;
    align-items: center;
  }
}

/* ---------- 降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa[open] .qa__a { animation: none; }
  .page-faq .qa__q,
  .page-faq .qa__q::before,
  .page-faq .qa__icon,
  .page-faq .qa__icon::before,
  .page-faq .qa__icon::after,
  .page-faq .faq-filter,
  .page-faq .faq-sidebar__link,
  .page-faq .faq-sidebar__link::before {
    transition: none;
  }
}