.page-faq {
  --faq-side-w: 234px;
  --faq-line: 2px solid var(--steel);
  --faq-q-bg: var(--panel);
}

/* ============ 面包屑下的首屏 ============ */
.page-faq .faq-hero {
  padding: 28px 0 40px;
  border-bottom: var(--faq-line);
  position: relative;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 96px;
  height: 4px;
  background: var(--signal);
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(32px, 6.4vw, 56px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 12px 0 16px;
  max-width: 18ch;
}

.page-faq .faq-hero__lede {
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 62ch;
  margin: 0;
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

/* ============ 侧栏 + 主内容 ============ */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding: 30px 0 72px;
}

.page-faq .faq-side__title {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px;
}

.page-faq .faq-side__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-side__link {
  display: block;
  padding: 10px 14px;
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  color: var(--text);
  background: var(--panel);
  border: var(--faq-line);
  transition: border-color var(--ease), box-shadow var(--ease), transform var(--ease);
}

.page-faq .faq-side__link:hover,
.page-faq .faq-side__link:focus-visible {
  border-color: var(--signal);
  box-shadow: var(--shadow-soft);
  transform: translate(-2px, -2px);
  outline: none;
}

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

.page-faq .faq-side__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 42ch;
}

.page-faq .faq-side__note a {
  color: var(--signal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-side__note a:hover {
  color: var(--orange);
}

/* ============ 区块骨架 ============ */
.page-faq .faq-block {
  padding: 0 0 44px;
  margin: 0 0 44px;
  border-bottom: var(--faq-line);
  scroll-margin-top: 150px;
}

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

.page-faq .faq-block__head {
  margin: 0 0 24px;
}

.page-faq .faq-block__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(25px, 4.4vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 10px 0 12px;
  max-width: 22ch;
}

.page-faq .faq-block__lede {
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 58ch;
  margin: 0;
}

/* ============ 三步上手 ============ */
.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: faqstep;
}

.page-faq .faq-step {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--panel);
  border: var(--faq-line);
  border-top: 4px solid var(--signal);
  transition: box-shadow var(--ease), transform var(--ease);
}

.page-faq .faq-step:hover {
  box-shadow: var(--shadow-hard-lg);
  transform: translate(-2px, -2px);
}

.page-faq .faq-step__num {
  display: block;
  font-family: var(--font-data);
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
  margin: 0 0 12px;
}

.page-faq .faq-step__title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 0 0 8px;
}

.page-faq .faq-step__text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  margin: 0;
}

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

/* ============ 数据字段速查 ============ */
.page-faq .faq-fields {
  display: grid;
  gap: 22px;
}

.page-faq .faq-table-wrap {
  overflow-x: auto;
  border: var(--faq-line);
  background: var(--panel);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-family: var(--font-data);
  font-size: 13px;
  line-height: 1.55;
}

.page-faq .faq-table thead th {
  text-align: left;
  padding: 12px 14px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--ink);
  border-bottom: var(--faq-line);
  white-space: nowrap;
}

.page-faq .faq-table tbody th,
.page-faq .faq-table tbody td {
  text-align: left;
  padding: 13px 14px;
  border-bottom: 1px solid var(--steel);
  vertical-align: top;
  color: var(--frost);
}

.page-faq .faq-table tbody th {
  color: var(--signal);
  font-weight: 700;
  white-space: nowrap;
}

.page-faq .faq-table tbody tr:last-child th,
.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-table tbody tr:hover th,
.page-faq .faq-table tbody tr:hover td {
  background: rgba(59, 255, 155, 0.07);
}

/* 字段气泡 */
.page-faq .faq-tip {
  position: relative;
  display: inline-block;
  border-bottom: 1px dashed var(--signal-dim);
  cursor: help;
  outline: none;
}

.page-faq .faq-tip::after {
  content: attr(data-tip);
  position: absolute;
  left: 0;
  bottom: calc(100% + 10px);
  z-index: 6;
  width: max-content;
  max-width: 210px;
  padding: 8px 10px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--ink);
  background: var(--signal);
  border: 2px solid var(--ink);
  opacity: 0;
  visibility: hidden;
  transform: translateY(5px);
  transition: opacity var(--ease), transform var(--ease), visibility var(--ease);
  pointer-events: none;
}

.page-faq .faq-tip:hover::after,
.page-faq .faq-tip:focus-visible::after {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

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

/* ============ 阵容核对：标签页 + 折叠 ============ */
.page-faq .faq-tabs {
  border: var(--faq-line);
  background: var(--panel);
}

.page-faq .faq-tabs .tabs__list {
  display: flex;
  background: var(--ink);
  border-bottom: var(--faq-line);
}

.page-faq .faq-tabs .tabs__tab {
  flex: 1 1 0;
  appearance: none;
  border: 0;
  border-bottom: 3px solid transparent;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 15px 14px;
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-faq .faq-tabs .tabs__tab:hover {
  color: var(--text);
}

.page-faq .faq-tabs .tabs__tab[aria-selected="true"] {
  color: var(--text);
  border-bottom-color: var(--signal);
  background: var(--panel);
}

.page-faq .faq-tabs .tabs__tab:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: -4px;
}

.page-faq .faq-tabs .tabs__panel {
  padding: 16px;
  outline: none;
}

/* ============ 折叠问答 ============ */
.page-faq .faq-q {
  border: var(--faq-line);
  background: var(--faq-q-bg);
  margin: 0 0 10px;
}

.page-faq .faq-q:last-child {
  margin-bottom: 0;
}

.page-faq .faq-q[open] {
  border-color: var(--signal-dim);
}

.page-faq .faq-q__summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 15px 52px 15px 16px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
  transition: background var(--ease);
}

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

.page-faq .faq-q__summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-data);
  font-size: 22px;
  line-height: 1;
  color: var(--signal);
  transition: transform var(--ease), color var(--ease);
}

.page-faq .faq-q[open] .faq-q__summary::after {
  content: "\2212";
  color: var(--orange);
}

.page-faq .faq-q__summary:hover {
  background: rgba(59, 255, 155, 0.07);
}

.page-faq .faq-q__summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: -3px;
}

.page-faq .faq-q__body {
  padding: 0 16px 18px;
  border-top: 1px solid var(--steel);
}

.page-faq .faq-q__body p {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-sample {
  display: block;
  margin: 14px 0 0;
  padding: 10px 12px;
  font-family: var(--font-data);
  font-size: 13px;
  line-height: 1.5;
  color: var(--frost);
  background: var(--ink);
  border-left: 3px solid var(--violet);
  overflow-x: auto;
  white-space: nowrap;
}

/* ============ 联系客服 ============ */
.page-faq .faq-contact {
  display: grid;
  gap: 16px;
}

.page-faq .faq-contact__card {
  padding: 20px 18px;
  background: var(--panel);
  border: var(--faq-line);
  box-shadow: var(--shadow-hard);
  transition: box-shadow var(--ease), transform var(--ease);
}

.page-faq .faq-contact__card:hover {
  box-shadow: var(--shadow-hard-lg);
  transform: translate(-2px, -2px);
}

.page-faq .faq-contact__title {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 0 0 9px;
}

.page-faq .faq-contact__text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  margin: 0 0 16px;
}

.page-faq .faq-contact__value {
  margin: 0;
  font-family: var(--font-data);
  font-size: 14px;
  line-height: 1.5;
  color: var(--signal);
  word-break: break-all;
}

.page-faq .faq-contact__link {
  color: var(--orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-contact__link:hover {
  color: var(--signal);
}

.page-faq .faq-contact__foot {
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: var(--faq-line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ============ 响应式 ============ */
@media (min-width: 900px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-fields {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
    gap: 26px;
  }

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

@media (min-width: 1024px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-side-w) minmax(0, 1fr);
    gap: 46px;
    padding: 38px 0 84px;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 138px;
    align-self: start;
  }

  .page-faq .faq-side__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    border-left: var(--faq-line);
    padding-bottom: 0;
  }

  .page-faq .faq-side__link {
    border: 0;
    border-left: 3px solid transparent;
    background: transparent;
    margin-left: -2px;
    padding: 11px 14px;
    white-space: normal;
  }

  .page-faq .faq-side__link:hover,
  .page-faq .faq-side__link:focus-visible {
    border-left-color: var(--signal);
    background: var(--panel);
    box-shadow: none;
    transform: none;
  }

  .page-faq .faq-hero {
    padding: 40px 0 52px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-block__title {
    font-size: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .faq-contact__card,
  .page-faq .faq-side__link {
    transition: none;
  }

  .page-faq .faq-step:hover,
  .page-faq .faq-contact__card:hover,
  .page-faq .faq-side__link:hover {
    transform: none;
    box-shadow: var(--shadow-hard);
  }

  .page-faq .faq-tip::after {
    transition: none;
    transform: none;
  }
}