.page-faq {
  --faq-rule: #D6DBE8;
  --faq-ink: #0A0C10;
  --faq-ink-soft: #3A4252;
  --faq-gap: 22px;
  background: var(--charcoal-base);
  color: var(--cold-white);
  overflow-x: hidden;
}

.page-faq .yb-section {
  margin-top: 56px;
}

.page-faq .yb-section__head {
  margin-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 28px 0 40px;
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 26px;
  margin-top: 22px;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  color: var(--warm-orange);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--sans);
  font-weight: 900;
  font-size: clamp(28px, 6.6vw, 58px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  max-width: 17em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  color: var(--index-gray);
  max-width: 40em;
}

.page-faq .faq-hero__side {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding-top: 18px;
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-stat__num {
  display: block;
  font-family: var(--mono);
  font-size: 26px;
  line-height: 1.1;
  color: var(--pulse-green);
  letter-spacing: 0.02em;
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--index-gray);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 0;
  max-width: 1000px;
}

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

/* ---------- 对照表 ---------- */
.page-faq .faq-tablecard {
  margin-top: 18px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--panel-slate);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.page-faq .faq-tablecard__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--hairline);
  background: var(--charcoal-base);
}

.page-faq .faq-tablecard__hint {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--index-gray);
}

.page-faq .faq-tablewrap {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--screen-white);
}

.page-faq .faq-tablewrap:focus-visible {
  outline: 2px solid var(--warm-orange);
  outline-offset: -2px;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  color: var(--faq-ink);
  font-size: 14px;
}

.page-faq .faq-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  padding: 10px 14px;
  background: var(--charcoal-base);
  color: var(--cold-white);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-align: left;
  white-space: nowrap;
}

.page-faq .faq-table__group th {
  padding: 8px 14px;
  background: rgba(30, 90, 255, 0.1);
  border-top: 1px solid var(--faq-rule);
  color: var(--digital-blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-align: left;
}

.page-faq .faq-table tbody tr:not(.faq-table__group) {
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-table td {
  padding: 12px 14px;
  vertical-align: top;
  line-height: 1.6;
}

.page-faq .faq-table__num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--digital-blue);
  white-space: nowrap;
}

.page-faq .faq-table__ent {
  font-weight: 700;
  white-space: nowrap;
  color: var(--faq-ink);
}

.page-faq .faq-table__ver {
  font-family: var(--mono);
  font-size: 12px;
  color: #5A6478;
  white-space: nowrap;
}

.page-faq .faq-table__desc {
  color: var(--faq-ink-soft);
  min-width: 220px;
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-qa {
  margin-top: 20px;
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-qa__item {
  border-bottom: 1px solid var(--hairline);
  border-left: 2px solid transparent;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-qa__item[open] {
  border-left-color: var(--pulse-green);
  background: var(--panel-slate);
}

.page-faq .faq-qa__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 16px 16px 14px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--cold-white);
}

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

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

.page-faq .faq-qa__q::after {
  content: "+";
  margin-left: auto;
  padding-left: 12px;
  font-family: var(--mono);
  font-size: 18px;
  line-height: 1;
  color: var(--warm-orange);
}

.page-faq .faq-qa__item[open] .faq-qa__q::after {
  content: "\2013";
  color: var(--pulse-green);
}

.page-faq .faq-qa__item:hover .faq-qa__q {
  background: rgba(255, 107, 53, 0.06);
}

.page-faq .faq-qa__idx {
  flex: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--digital-blue);
  padding-top: 3px;
}

.page-faq .faq-qa__a {
  padding: 0 16px 18px 42px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--index-gray);
}

.page-faq .faq-qa__a p {
  margin: 0 0 10px;
}

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

/* ---------- 资料下载 ---------- */
.page-faq .faq-dl {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

.page-faq .faq-dl__title {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 700;
  color: var(--cold-white);
}

.page-faq .faq-dl__text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--index-gray);
}

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

.page-faq .faq-dl__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-faq .faq-dl__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--cold-white);
}

.page-faq .faq-dl__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 8px;
  height: 1px;
  background: var(--warm-orange);
}

/* ---------- 三栏回溯 ---------- */
.page-faq .faq-cols {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-cols__item {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-cols__no {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--digital-blue);
}

.page-faq .faq-cols__t {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--cold-white);
}

.page-faq .faq-cols__d {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--index-gray);
  max-width: 38em;
}

.page-faq .faq-callout {
  margin-top: 22px;
  border-left: 2px solid var(--pulse-green);
}

.page-faq .faq-callout__text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--cold-white);
  max-width: 40em;
}

/* ---------- 三步排查 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: 24px;
  margin-top: 20px;
  align-items: start;
}

.page-faq .faq-steps__fig {
  margin: 0;
  max-width: 520px;
}

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

.page-faq .faq-steps__item {
  display: grid;
  gap: 10px;
  padding: 18px 0;
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-steps__num {
  font-family: var(--serif);
  font-size: 34px;
  line-height: 1;
  color: var(--digital-blue);
}

.page-faq .faq-steps__t {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--cold-white);
}

.page-faq .faq-steps__d {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--index-gray);
  max-width: 38em;
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-contact {
  margin-top: 20px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--panel-slate);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.page-faq .faq-contact__main {
  padding: 22px 18px;
  border-bottom: 1px solid var(--hairline);
  background: linear-gradient(120deg, rgba(30, 90, 255, 0.16), rgba(255, 107, 53, 0.08) 70%, transparent);
}

.page-faq .faq-contact__big {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--cold-white);
  max-width: 34em;
}

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

.page-faq .faq-contact__meta {
  margin: 0;
  padding: 6px 18px 14px;
}

.page-faq .faq-contact__row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--hairline);
}

.page-faq .faq-contact__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-contact__label {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--index-gray);
}

.page-faq .faq-contact__value {
  margin: 0;
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--cold-white);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  margin: 0;
  padding: 14px 18px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--index-gray);
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-inline-link {
  color: var(--light-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 166, 255, 0.4);
}

.page-faq .faq-inline-link:hover {
  color: var(--warm-orange);
  border-bottom-color: var(--warm-orange);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-cols__item {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 20px;
    padding: 22px 0;
  }

  .page-faq .faq-steps__item {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 20px;
    padding: 22px 0;
  }

  .page-faq .faq-qa__q {
    font-size: 17px;
    padding: 18px 20px 18px 16px;
  }

  .page-faq .faq-qa__a {
    padding: 0 20px 22px 52px;
  }
}

@media (min-width: 900px) {
  .page-faq .yb-section {
    margin-top: 72px;
  }

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

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) 236px;
    gap: 48px;
    align-items: end;
    margin-top: 28px;
  }

  .page-faq .faq-hero__side {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-top: 0;
    padding-left: 24px;
    border-top: 0;
    border-left: 1px solid var(--hairline);
  }

  .page-faq .faq-dl {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-dl__a {
    grid-column: 1 / span 7;
  }

  .page-faq .faq-dl__b {
    grid-column: 8 / span 5;
    margin-top: 26px;
  }

  .page-faq .faq-dl__c {
    grid-column: 1 / span 11;
  }

  .page-faq .faq-steps {
    grid-template-columns: 4fr 6fr;
    gap: 40px;
  }

  .page-faq .faq-contact {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .faq-contact__main {
    border-bottom: 0;
    border-right: 1px solid var(--hairline);
    padding: 28px 26px;
  }

  .page-faq .faq-contact__meta {
    padding: 20px 24px 6px;
  }

  .page-faq .faq-contact__note {
    grid-column: 1 / -1;
    padding: 16px 26px 22px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero__title {
    font-size: 58px;
  }

  .page-faq .faq-steps {
    grid-template-columns: 5fr 7fr;
  }
}

@media (hover: hover) {
  .page-faq .faq-table tbody tr:not(.faq-table__group):hover {
    background: #E8EDFB;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-qa__item,
  .page-faq .faq-qa__q {
    transition: none;
  }
}