.page-faq {
  --faq-panel: #0B1729;
  --faq-edge: #123A5E;
  --faq-edge-soft: rgba(18, 58, 94, 0.6);
  --faq-cyan-wash: rgba(37, 230, 216, 0.08);
  display: block;
  padding: 0 0 88px;
  font-family: var(--bp-sans);
  color: var(--bp-gray);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-faq .bp-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 22px 0 0;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--bp-mute);
}

.page-faq .bp-crumbs a {
  color: var(--bp-gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .bp-crumbs a:hover,
.page-faq .bp-crumbs a:focus-visible {
  color: var(--bp-cyan);
  border-bottom-color: var(--bp-cyan);
  outline: none;
}

.page-faq .bp-crumbs__sep {
  color: var(--bp-teal);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 34px 0 44px;
  border-bottom: 1px solid var(--faq-edge);
}

.page-faq .faq-hero__glyph {
  position: absolute;
  top: 22px;
  right: 2px;
  width: 112px;
  height: 112px;
  color: var(--bp-teal);
  opacity: 0.45;
  pointer-events: none;
}

.page-faq .faq-hero__kicker {
  display: block;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--bp-anno);
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  max-width: 18ch;
  font-size: clamp(30px, 6.2vw, 56px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--bp-paper);
}

.page-faq .faq-hero__lead {
  margin: 22px 0 0;
  max-width: 40em;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--bp-gray);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin: 32px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--faq-edge);
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--bp-mute);
}

.page-faq .faq-hero__facts .bp-num {
  font-family: var(--bp-mono);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--bp-cyan);
}

/* ---------- 区块标题 ---------- */
.page-faq .faq-head .bp-annot {
  display: block;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--bp-anno);
  text-transform: uppercase;
}

.page-faq .faq-head h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--bp-paper);
}

.page-faq .faq-head__note {
  margin: 12px 0 0;
  max-width: 44em;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--bp-mute);
}

/* ---------- 三步上手 ---------- */
.page-faq .faq-steps {
  padding: 56px 0 0;
}

.page-faq .faq-steps__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  padding-top: 20px;
  border-top: 1px solid var(--faq-edge);
}

.page-faq .faq-step__no {
  display: inline-block;
  min-width: 48px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--bp-cyan);
  font-family: var(--bp-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--bp-cyan);
}

.page-faq .faq-step h3 {
  margin: 16px 0 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.42;
  color: var(--bp-paper);
}

.page-faq .faq-step p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--bp-gray);
}

.page-faq .faq-steps__media {
  margin: 42px 0 0;
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  padding: 62px 0 0;
}

.page-faq .faq-body__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--bp-anno);
  text-transform: uppercase;
}

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

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 15px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--bp-r);
  background: rgba(11, 23, 41, 0.75);
  color: var(--bp-gray);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--bp-cyan);
  background: var(--faq-cyan-wash);
  color: var(--bp-cyan);
  outline: none;
}

.page-faq .faq-group {
  scroll-margin-top: 96px;
  padding-bottom: 38px;
  border-bottom: 1px solid var(--faq-edge);
}

.page-faq .faq-group + .faq-group {
  margin-top: 48px;
}

.page-faq .faq-group:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.page-faq .faq-group__no {
  font-family: var(--bp-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--bp-hot);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(20px, 2.8vw, 27px);
  font-weight: 800;
  line-height: 1.28;
  color: var(--bp-paper);
}

.page-faq .faq-figure {
  margin: 0 0 18px;
}

/* ---------- 折叠面板 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--faq-edge);
  border-radius: var(--bp-r);
  background: var(--faq-panel);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

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

.page-faq .faq-item[open] {
  border-color: var(--bp-cyan);
  background: linear-gradient(90deg, rgba(37, 230, 216, 0.07), rgba(11, 23, 41, 0.94) 46%);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-height: 48px;
  padding: 15px 18px;
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--bp-mist);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--bp-mono);
  font-size: 18px;
  line-height: 1.2;
  color: var(--bp-cyan);
}

.page-faq .faq-item[open] > summary::after {
  content: "\2013";
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--bp-cyan);
  outline-offset: 2px;
}

.page-faq .faq-item__body {
  margin: 0 18px;
  padding: 14px 0 16px;
  border-top: 1px solid var(--faq-edge-soft);
  font-size: 15px;
  line-height: 1.78;
  color: var(--bp-gray);
}

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

.page-faq .faq-item__body p + p {
  margin-top: 10px;
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-help {
  padding: 60px 0 0;
}

.page-faq .faq-help__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding: 30px 24px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--bp-r);
  background: linear-gradient(135deg, rgba(255, 90, 43, 0.1), rgba(11, 23, 41, 0.96) 48%);
}

.page-faq .faq-help .bp-annot {
  display: block;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--bp-anno);
  text-transform: uppercase;
}

.page-faq .faq-help h2 {
  margin: 10px 0 0;
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 800;
  line-height: 1.24;
  color: var(--bp-paper);
}

.page-faq .faq-help__intro {
  margin: 14px 0 0;
  max-width: 38em;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--bp-gray);
}

.page-faq .faq-help__list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--bp-gray);
}

.page-faq .faq-help__list li + li {
  margin-top: 8px;
}

.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--bp-cyan);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 0;
}

.page-faq .faq-help__side {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-faq .faq-help__label {
  margin: 0 0 5px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--bp-anno);
  text-transform: uppercase;
}

.page-faq .faq-help__value {
  margin: 0;
  font-family: var(--bp-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--bp-mist);
  word-break: break-word;
}

.page-faq .faq-help__value--text {
  font-family: var(--bp-sans);
  font-size: 14.5px;
}

.page-faq .faq-help__note {
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid var(--faq-edge-soft);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--bp-mute);
}

.page-faq .faq-help__note a {
  color: var(--bp-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(37, 230, 216, 0.45);
}

.page-faq .faq-help__note a:hover,
.page-faq .faq-help__note a:focus-visible {
  border-bottom-color: var(--bp-cyan);
  outline: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-hero h1 {
    max-width: 22ch;
  }

  .page-faq .faq-steps__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 32px;
  }

  .page-faq .faq-help__panel {
    padding: 36px 32px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__lead {
    margin-left: 28%;
    max-width: 38em;
  }

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

  .page-faq .faq-step {
    padding: 20px 26px 0;
    border-left: 1px solid var(--faq-edge);
  }

  .page-faq .faq-step:first-child {
    padding-left: 0;
    border-left: none;
  }

  .page-faq .faq-step:last-child {
    padding-right: 0;
  }

  .page-faq .faq-help__panel {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 46px;
    padding: 42px 40px;
  }

  .page-faq .faq-help__side {
    padding-left: 34px;
    border-left: 1px solid var(--faq-edge);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body__inner {
    grid-template-columns: minmax(0, 1fr) 238px;
    grid-template-areas: "content index";
    column-gap: 52px;
    align-items: start;
  }

  .page-faq .faq-groups {
    grid-area: content;
  }

  .page-faq .faq-index {
    grid-area: index;
    position: sticky;
    top: 92px;
    padding-top: 4px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 4px;
    padding: 0;
    overflow: visible;
  }

  .page-faq .faq-index__link {
    width: 100%;
    justify-content: flex-start;
    border-color: transparent transparent transparent var(--faq-edge);
    border-width: 0 0 0 2px;
    border-radius: 0;
    background: none;
    padding: 10px 12px;
    white-space: normal;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--bp-cyan);
    background: var(--faq-cyan-wash);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}