/* ===== 支持中心 /support/ 页面专属样式 ===== */
.page-faq {
  --faq-line: rgba(176, 184, 196, 0.20);
  --faq-line-strong: rgba(176, 184, 196, 0.42);
  --faq-panel: #111827;
  --faq-neon: #00E5A0;
  --faq-flare: #FF4D2E;
  --faq-elec: #2D9CDB;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
}

/* ---------- 顶部区域 ---------- */
.page-faq .faq-top {
  position: relative;
  padding: calc(var(--hdr-h) + 44px) 0 56px;
  background:
    radial-gradient(880px 420px at 6% -12%, rgba(0, 229, 160, 0.16), transparent 62%),
    radial-gradient(760px 400px at 98% 6%, rgba(255, 77, 46, 0.10), transparent 60%),
    linear-gradient(180deg, #0A0E17 0%, #0d1322 100%);
  border-bottom: 1px solid var(--faq-line);
  overflow: hidden;
}

.page-faq .faq-top::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(176, 184, 196, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(176, 184, 196, 0.05) 1px, transparent 1px);
  background-size: 68px 68px;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 88%);
}

.page-faq .faq-top .sk-container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-top__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 22px;
}

.page-faq .faq-top__copy .sk-title {
  margin: 10px 0 18px;
}

.page-faq .faq-top__copy .sk-lede {
  max-width: 56ch;
}

.page-faq .faq-top__figure {
  margin: 0;
}

/* 顶部数据读数条 */
.page-faq .faq-stats {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 2px solid var(--faq-neon);
}

.page-faq .faq-stat {
  padding: 14px 14px 14px 0;
  border-bottom: 1px solid var(--faq-line);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-stat:nth-child(odd) {
  border-right: 1px solid var(--faq-line);
}

.page-faq .faq-stat:nth-child(even) {
  padding-left: 16px;
}

.page-faq .faq-stat__num {
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  line-height: 1;
  color: var(--white);
  letter-spacing: -0.02em;
}

.page-faq .faq-stat__label {
  font-size: 0.82rem;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}

/* ---------- 分类跳转条 ---------- */
.page-faq .faq-jump {
  position: sticky;
  top: var(--hdr-h);
  z-index: 20;
  background: rgba(10, 14, 23, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--faq-line-strong);
}

.page-faq .faq-jump__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 10px 0;
}

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

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 8px 14px;
  border: 1px solid var(--faq-line-strong);
  border-radius: var(--radius);
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.88rem;
  white-space: nowrap;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease),
    background-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-faq .faq-jump__idx {
  font-size: 0.72rem;
  color: var(--faq-neon);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  color: var(--ink-950);
  background: var(--faq-neon);
  border-color: var(--faq-neon);
  transform: translateY(-2px);
}

.page-faq .faq-jump__link:hover .faq-jump__idx,
.page-faq .faq-jump__link:focus-visible .faq-jump__idx {
  color: var(--ink-950);
}

/* ---------- 内容区块通用 ---------- */
.page-faq .faq-block {
  position: relative;
}

.page-faq .faq-block--alt {
  background:
    linear-gradient(180deg, rgba(17, 24, 39, 0.85) 0%, rgba(10, 14, 23, 0.4) 100%);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-block__head {
  max-width: 70ch;
  margin-bottom: 32px;
}

.page-faq .faq-block__head .sk-title {
  margin: 10px 0 14px;
}

.page-faq .faq-block__note {
  margin-top: 28px;
  padding-left: 16px;
  border-left: 3px solid var(--faq-flare);
  color: var(--text-dim);
  font-size: 0.95rem;
}

/* ---------- 三步步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  counter-reset: faq-step;
}

.page-faq .faq-step {
  position: relative;
  padding: 26px 22px 24px;
  background: var(--faq-panel);
  border: 2px solid var(--faq-line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease),
    box-shadow 0.2s var(--ease);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 42px;
  height: 4px;
  background: var(--faq-neon);
}

.page-faq .faq-step:hover {
  transform: translate(-3px, -3px);
  border-color: var(--faq-neon);
  box-shadow: var(--shadow-hard), var(--glow-neon);
}

.page-faq .faq-step__num {
  display: block;
  font-size: clamp(2.6rem, 11vw, 4rem);
  line-height: 0.9;
  color: var(--white);
  letter-spacing: -0.03em;
  text-shadow: 3px 3px 0 rgba(0, 229, 160, 0.22);
}

.page-faq .faq-step__badge {
  display: inline-block;
  margin-top: 12px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--ink-950);
  background: var(--faq-neon);
  border-radius: var(--radius);
}

.page-faq .faq-step__title {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 4vw, 1.55rem);
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-faq .faq-step__text {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.96rem;
  line-height: 1.68;
}

.page-faq .faq-steps__figure {
  margin-top: 30px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  border-top: 2px solid var(--faq-line-strong);
  padding-top: 12px;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-line);
  border-left: 4px solid var(--faq-line-strong);
  border-radius: var(--radius);
  background: rgba(17, 24, 39, 0.6);
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--faq-neon);
  background: rgba(17, 24, 39, 0.95);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 44px 16px 16px;
  cursor: pointer;
  list-style: none;
  position: relative;
  color: var(--white);
  font-family: var(--font-display);
  font-size: clamp(1rem, 3.4vw, 1.18rem);
  line-height: 1.4;
  letter-spacing: 0.01em;
}

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

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

.page-faq .faq-item__idx {
  flex: 0 0 auto;
  font-size: 0.78rem;
  color: var(--faq-neon);
  padding-top: 4px;
}

.page-faq .faq-item__label {
  flex: 1 1 auto;
}

.page-faq .faq-item__mark {
  position: absolute;
  right: 16px;
  top: 50%;
  width: 14px;
  height: 14px;
  margin-top: -7px;
  transition: transform 0.22s var(--ease);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--faq-neon);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(90deg);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
}

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

.page-faq .faq-item__a {
  padding: 0 18px 18px 42px;
  border-top: 1px solid var(--faq-line);
  margin-top: 2px;
}

.page-faq .faq-item__a p {
  margin: 0;
  padding-top: 14px;
  color: var(--text-dim);
  font-size: 0.96rem;
  line-height: 1.72;
}

.page-faq .faq-item__a p + p {
  padding-top: 10px;
}

/* ---------- 联系支持面板 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding: 30px 22px;
  border: 2px solid var(--faq-line-strong);
  border-top: 4px solid var(--faq-neon);
  background:
    radial-gradient(560px 260px at 100% 0%, rgba(45, 156, 219, 0.16), transparent 64%),
    var(--faq-panel);
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-contact__body .sk-title {
  margin: 10px 0 14px;
}

.page-faq .faq-contact__list {
  margin-top: 18px;
}

.page-faq .faq-contact__action {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding-top: 6px;
}

.page-faq .faq-contact__hint {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--text-faint);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-top {
    padding: calc(var(--hdr-h) + 56px) 0 68px;
  }

  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-stat {
    padding: 18px 18px 18px 0;
    border-bottom: none;
    border-right: 1px solid var(--faq-line);
  }

  .page-faq .faq-stat:nth-child(even) {
    padding-left: 0;
  }

  .page-faq .faq-stat:last-child {
    border-right: none;
  }

  .page-faq .faq-stat:not(:first-child) {
    padding-left: 20px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-top__grid {
    grid-template-columns: 1.18fr 0.82fr;
    align-items: center;
    gap: 48px;
  }

  .page-faq .faq-top__figure {
    margin-top: 8px;
  }

  .page-faq .faq-jump__list {
    justify-content: flex-start;
    gap: 10px;
  }

  .page-faq .faq-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .page-faq .faq-contact {
    grid-template-columns: 1.6fr 1fr;
    align-items: center;
    gap: 40px;
    padding: 44px 40px;
  }

  .page-faq .faq-contact__action {
    align-items: flex-end;
    text-align: right;
  }
}
</main>