/* ===== 支持中心 · 页面作用域 ===== */
.page-faq {
  --faq-panel: rgba(18, 61, 74, .34);
  --faq-panel-2: rgba(18, 61, 74, .58);
  --faq-hot: rgba(0, 229, 255, .5);
  color: var(--txt);
  font-family: var(--font-sans);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 44px) 0 clamp(30px, 5vw, 66px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(115% 85% at 92% -10%, rgba(0, 229, 255, .16), transparent 60%),
    radial-gradient(85% 75% at 0% 108%, rgba(42, 27, 61, .62), transparent 66%);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  align-items: end;
}

.page-faq .faq-hero-copy {
  min-width: 0;
}

.page-faq .faq-hero-copy h1 {
  margin: 10px 0 0;
  font-size: clamp(28px, 5.6vw, 52px);
  line-height: 1.18;
  letter-spacing: -.012em;
  font-weight: 700;
  color: var(--txt-strong);
}

.page-faq .faq-lede {
  margin: 16px 0 0;
  font-size: clamp(15.5px, 2vw, 18px);
  line-height: 1.85;
  color: var(--txt);
  max-width: 60ch;
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

/* 规模速览牌 */
.page-faq .faq-hero-board {
  min-width: 0;
  padding: 18px 20px 20px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--c-cyan);
  background: var(--faq-panel);
}

.page-faq .faq-board-title {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--txt-mute);
}

.page-faq .faq-board-figure {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 10px 0 0;
}

.page-faq .faq-board-num {
  font-size: clamp(30px, 6vw, 42px);
  line-height: 1;
  color: var(--c-cyan);
}

.page-faq .faq-board-sep {
  font-size: 22px;
  color: var(--line-2);
}

.page-faq .faq-board-cap {
  margin: 8px 0 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--txt-mute);
}

.page-faq .faq-board-list {
  list-style: none;
  margin: 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 9px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--txt);
}

.page-faq .faq-board-k {
  display: inline-block;
  min-width: 3.6em;
  margin-right: 8px;
  color: var(--c-gold);
  font-size: 13px;
}

/* ---------- 通用区块 ---------- */
.page-faq .faq-block {
  padding: clamp(40px, 6vw, 78px) 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-block .section-head {
  margin: 0 0 clamp(24px, 4vw, 40px);
  max-width: 66ch;
}

.page-faq .media-frame {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--faq-panel);
  overflow: hidden;
}

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

.page-faq .media-frame .media-frame__caption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--txt-mute);
}

/* ---------- 首访三步 ---------- */
.page-faq .step-track {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .step-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: clamp(20px, 3vw, 30px) 0;
  border-bottom: 1px solid var(--line);
  transition: border-color var(--t-fast);
}

.page-faq .step-item:hover {
  border-bottom-color: var(--faq-hot);
}

.page-faq .step-num {
  font-size: clamp(20px, 4vw, 26px);
  line-height: 1;
  color: rgba(0, 229, 255, .45);
  letter-spacing: .06em;
}

.page-faq .step-body {
  min-width: 0;
}

.page-faq .step-title {
  margin: 0;
  font-size: clamp(17px, 2.3vw, 21px);
  line-height: 1.4;
  font-weight: 700;
  color: var(--txt-strong);
}

.page-faq .step-text {
  margin: 8px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--txt);
  max-width: 68ch;
}

.page-faq .step-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 14px;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast), color var(--t-fast);
}

.page-faq .step-link:hover,
.page-faq .step-link:focus-visible {
  border-bottom-color: var(--c-cyan);
}

.page-faq .faq-step-figure {
  margin-top: clamp(28px, 4vw, 48px);
}

/* ---------- 索引查询 ---------- */
.page-faq .faq-index-grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 38px);
  align-items: start;
}

.page-faq .faq-tips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.page-faq .faq-tips li {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--txt);
}

.page-faq .faq-tip-key {
  display: inline-block;
  margin-right: 10px;
  padding: 2px 9px;
  border: 1px solid var(--line-gold);
  color: var(--c-gold);
  font-size: 11.5px;
  letter-spacing: .1em;
  vertical-align: 2px;
}

.page-faq .faq-index-note {
  margin: 18px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--txt-mute);
  border-left: 2px solid var(--line-hot);
  padding-left: 14px;
}

/* 查询演示 */
.page-faq .search-demo {
  padding: 16px 16px 18px;
  border: 1px solid var(--line);
  background: var(--faq-panel-2);
  min-width: 0;
}

.page-faq .search-demo-label {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--txt-mute);
}

.page-faq .search-demo-field {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 11px 13px;
  border: 1px solid var(--line-hot);
  background: rgba(11, 27, 43, .8);
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--txt-strong);
  overflow: hidden;
}

.page-faq .search-demo-text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.page-faq .search-demo-caret {
  flex: 0 0 auto;
  width: 2px;
  height: 16px;
  background: var(--c-cyan);
  box-shadow: 0 0 8px rgba(0, 229, 255, .8);
}

.page-faq .search-demo-suggest,
.page-faq .search-demo-list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.page-faq .search-demo-suggest li {
  font-size: 13px;
  color: var(--txt-mute);
  padding: 6px 10px;
  border: 1px dashed var(--line);
}

.page-faq .search-demo-list {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-faq .search-demo-list li {
  font-size: 13.5px;
  color: var(--txt);
  line-height: 1.6;
}

.page-faq .search-demo-list mark {
  background: transparent;
  color: var(--c-soft);
  border-bottom: 1px solid var(--c-soft);
}

.page-faq .faq-index-figure {
  margin-top: clamp(26px, 4vw, 44px);
}

/* ---------- 标签收藏 ---------- */
.page-faq .faq-tag-grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 38px);
  align-items: start;
}

.page-faq .faq-tag-cloud-title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--txt-mute);
}

.page-faq .faq-tag-cloud .tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-tag-cloud-note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--txt-mute);
}

.page-faq .faq-tag-plate {
  min-width: 0;
}

.page-faq .faq-tag-facts {
  list-style: none;
  margin: 16px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid rgba(28, 20, 16, .2);
  display: grid;
  gap: 10px;
  font-size: 14px;
  line-height: 1.75;
}

.page-faq .faq-tag-facts li {
  padding-left: 14px;
  border-left: 2px solid var(--c-orange);
}

/* ---------- 问答 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(22px, 3.4vw, 42px);
  align-items: start;
}

.page-faq .faq-rail {
  min-width: 0;
  padding: 16px 18px 18px;
  border: 1px solid var(--line);
  background: var(--faq-panel);
}

.page-faq .faq-rail-title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--txt-mute);
}

.page-faq .faq-rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-rail-list .tag-pill {
  text-decoration: none;
  display: inline-block;
}

.page-faq .faq-rail-note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--txt-mute);
}

.page-faq .faq-list {
  min-width: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  background: var(--faq-panel);
  transition: border-color var(--t-fast), background var(--t-fast);
}

.page-faq .faq-item:hover {
  border-color: var(--line-2);
}

.page-faq .faq-item[open] {
  border-color: var(--faq-hot);
  background: var(--faq-panel-2);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 2vw, 16.5px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--txt-strong);
  transition: color var(--t-fast);
}

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

.page-faq .faq-q::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border: 1px solid var(--c-cyan);
  transition: background var(--t-fast), box-shadow var(--t-fast);
}

.page-faq .faq-item[open] .faq-q::before {
  background: var(--c-cyan);
  box-shadow: 0 0 10px rgba(0, 229, 255, .7);
}

.page-faq .faq-q::after {
  content: "展开";
  flex: 0 0 auto;
  margin-left: auto;
  align-self: center;
  padding: 2px 8px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  font-weight: 400;
  color: var(--txt-mute);
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-item[open] .faq-q::after {
  content: "收起";
  color: var(--c-gold);
  border-color: var(--line-gold);
}

.page-faq .faq-item[open] .faq-q {
  color: var(--c-soft);
}

.page-faq .faq-a {
  padding: 0 16px 16px 36px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--txt);
}

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

.page-faq .faq-steps-mini {
  margin: 10px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 6px;
}

.page-faq .faq-steps-mini li {
  padding-left: 2px;
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-contact-panel {
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(0, 229, 255, .12), transparent 58%),
    var(--faq-panel-2);
}

.page-faq .faq-contact-head {
  max-width: 58ch;
}

.page-faq .faq-contact-head .section-title {
  margin-top: 8px;
}

.page-faq .faq-contact-head .section-note {
  margin-top: 10px;
}

.page-faq .faq-contact-grid {
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-contact-item {
  padding: 15px 16px;
  background: rgba(11, 27, 43, .72);
}

.page-faq .faq-contact-item dt {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--txt-mute);
}

.page-faq .faq-contact-value {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--txt-strong);
  word-break: break-word;
}

.page-faq .faq-contact-note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--txt-mute);
}

.page-faq .faq-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

/* ---------- 返回顶部 ---------- */
.page-faq .back-to-top {
  display: inline-flex;
  align-items: center;
  margin: 0 0 24px var(--gutter);
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--txt-mute);
  text-decoration: none;
  background: rgba(11, 27, 43, .7);
  transition: color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
}

.page-faq .back-to-top:hover,
.page-faq .back-to-top:focus-visible {
  color: var(--c-cyan);
  border-color: var(--faq-hot);
  transform: translateY(-2px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .step-item {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }

  .page-faq .step-num {
    padding-top: 4px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(250px, .8fr);
  }

  .page-faq .faq-index-grid,
  .page-faq .faq-tag-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .95fr);
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-layout {
    grid-template-columns: 216px minmax(0, 1fr);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-rail-list {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-faq .step-item {
    grid-template-columns: 120px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step-item,
  .page-faq .faq-item,
  .page-faq .faq-q,
  .page-faq .back-to-top,
  .page-faq .step-link {
    transition: none;
  }

  .page-faq .back-to-top:hover {
    transform: none;
  }
}