/* ========== FAQ 页面专属样式 ========== */
.page-faq {
  --faq-ink: #14213D;
  --faq-ink-soft: #526170;
  --faq-card: #FFFFFF;
  --faq-line: #DCE4EF;
  --faq-soft: #EAF3FA;
  background: var(--color-bg-light);
  color: var(--faq-ink);
  font-family: var(--font-body);
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  background:
    radial-gradient(circle at 80% 0%, rgba(0, 163, 255, 0.2) 0%, transparent 46%),
    linear-gradient(135deg, var(--color-bg-dark) 0%, #0D1B2A 60%, #14305A 100%);
  color: var(--color-text-on-dark);
  padding: 32px 0 48px;
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-2) 50%, var(--color-accent) 100%);
}

.page-faq .faq-hero::after {
  content: "FAQ";
  position: absolute;
  right: -10px;
  bottom: -20px;
  font-family: var(--font-data);
  font-weight: 900;
  font-size: 160px;
  line-height: 1;
  color: rgba(255, 255, 255, 0.03);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero__container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__container .breadcrumb {
  margin-bottom: 32px;
}

.page-faq .faq-hero__label {
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.28em;
  color: var(--color-primary-2);
  margin-bottom: 12px;
}

.page-faq .faq-hero h1 {
  font-size: clamp(26px, 4.2vw, 40px);
  line-height: 1.25;
  transform: skew(-4deg);
  margin: 0 0 16px;
  color: var(--color-text-on-dark);
  max-width: 920px;
}

.page-faq .faq-hero__lead {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-muted);
  max-width: 780px;
  margin: 0 0 24px;
}

.page-faq .faq-hero__statusbar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
}

.page-faq .faq-hero__status-item {
  font-size: 14px;
  color: var(--color-text-muted);
  border-left: 3px solid var(--color-primary);
  padding-left: 12px;
}

.page-faq .faq-hero__status-item strong {
  color: var(--color-text-on-dark);
  font-family: var(--font-data);
  font-weight: 600;
}

.page-faq .faq-hero__status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  margin-right: 6px;
  box-shadow: 0 0 10px rgba(0, 204, 102, 0.6);
}

.page-faq .faq-hero__media {
  margin: 0 0 32px;
}

.page-faq .faq-hero__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid rgba(0, 163, 255, 0.35);
  box-shadow: var(--shadow-lg);
}

/* ---------- Filter bar ---------- */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-filter__btn {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 2px solid var(--color-primary-2);
  color: var(--color-text-on-dark);
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.06em;
  padding: 8px 18px;
  border-radius: 2px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.page-faq .faq-filter__btn:hover {
  background: rgba(57, 255, 20, 0.12);
  transform: translateY(-2px);
}

.page-faq .faq-filter__btn.is-active {
  background: var(--color-primary-2);
  color: #0B0F1A;
  font-weight: 700;
  box-shadow: 0 0 18px rgba(57, 255, 20, 0.35);
}

/* ---------- QA section ---------- */
.page-faq .faq-qa {
  padding: 40px 0 64px;
}

.page-faq .faq-layout {
  display: grid;
  gap: 32px;
}

.page-faq .faq-index {
  display: none;
}

.page-faq .faq-category {
  margin-bottom: 44px;
}

.page-faq .faq-category__title {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 26px;
  font-weight: 900;
  transform: skew(-5deg);
  margin: 0 0 6px;
  color: var(--faq-ink);
}

.page-faq .faq-category__title::after {
  content: "";
  flex: 1;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), rgba(0, 163, 255, 0.1));
}

.page-faq .faq-category__num {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-primary);
  background: var(--faq-soft);
  border: 1px solid var(--color-primary);
  padding: 4px 8px;
  line-height: 1;
  transform: skew(-4deg);
}

.page-faq .faq-category__desc {
  margin: 0 0 18px 42px;
  font-size: 14px;
  color: var(--faq-ink-soft);
  padding-left: 14px;
  border-left: 2px solid var(--color-primary);
}

/* ---------- Accordion item ---------- */
.page-faq .faq-item {
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-left: 4px solid var(--color-primary);
  margin-bottom: 12px;
  box-shadow: 0 2px 10px rgba(11, 15, 26, 0.06);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.page-faq .faq-item[open] {
  border-left-color: var(--color-primary-2);
  box-shadow: var(--shadow-md);
}

.page-faq .faq-item__summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 16px 18px 18px;
  cursor: pointer;
  user-select: none;
}

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

.page-faq .faq-item__summary:hover {
  background: #F8FAFD;
}

.page-faq .faq-item__num {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-primary);
  min-width: 3em;
  padding: 3px 6px;
  background: var(--faq-soft);
  border: 1px solid rgba(0, 163, 255, 0.25);
  text-align: center;
}

.page-faq .faq-item__question {
  flex: 1;
  font-weight: 900;
  font-size: 15px;
  line-height: 1.45;
  transform: skew(-3deg);
  color: var(--faq-ink);
}

.page-faq .faq-item__icon {
  color: var(--color-primary);
  flex-shrink: 0;
  transition: transform 0.3s ease, color var(--transition);
}

.page-faq .faq-item[open] .faq-item__icon {
  transform: rotate(45deg);
  color: var(--color-primary-2);
}

.page-faq .faq-item__answer {
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-item[open] .faq-item__answer {
  animation: faq-answer-reveal 0.35s ease;
}

@keyframes faq-answer-reveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-item__answer-inner {
  padding: 16px 20px 20px 64px;
  color: var(--faq-ink-soft);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-item__answer-inner p {
  margin: 0 0 8px;
}

.page-faq .faq-item__more {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 700;
  text-decoration: none;
  font-size: 14px;
}

.page-faq .faq-item__more:hover {
  color: var(--color-primary-2);
}

/* ---------- Filter hidden states ---------- */
.page-faq [data-filterable][aria-hidden="true"],
.page-faq [data-filterable].is-hidden {
  display: none;
}

/* ---------- Contact ---------- */
.page-faq .faq-contact {
  background:
    linear-gradient(160deg, var(--color-bg-dark) 0%, #0E1A30 70%, #132A4A 100%);
  color: var(--color-text-on-dark);
  padding: 48px 0 56px;
  position: relative;
  overflow: hidden;
}

.page-faq .faq-contact::before {
  content: "CONTACT";
  position: absolute;
  left: -10px;
  bottom: -20px;
  font-family: var(--font-data);
  font-weight: 900;
  font-size: 140px;
  line-height: 1;
  color: rgba(255, 255, 255, 0.03);
  pointer-events: none;
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: 32px;
  position: relative;
  z-index: 1;
}

.page-faq .faq-contact__label {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--color-primary-2);
  margin-bottom: 12px;
}

.page-faq .faq-contact__title {
  font-size: 26px;
  font-weight: 900;
  transform: skew(-5deg);
  margin: 0 0 14px;
  color: var(--color-text-on-dark);
}

.page-faq .faq-contact__desc {
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.7;
  max-width: 500px;
  margin: 0 0 24px;
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
}

.page-faq .faq-contact__item {
  padding: 14px 0;
  border-bottom: 1px solid rgba(224, 230, 239, 0.12);
}

.page-faq .faq-contact__item-label {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.page-faq .faq-contact__item-value {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 17px;
  font-weight: 600;
  color: #FFFFFF;
  margin-right: 12px;
}

.page-faq .faq-contact__item-meta {
  font-size: 13px;
  color: var(--color-primary);
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.page-faq .faq-contact__actions .btn {
  margin: 0;
}

.page-faq .faq-contact__link {
  color: var(--color-primary-2);
  font-weight: 600;
  text-decoration: none;
  font-size: 14px;
}

.page-faq .faq-contact__link:hover {
  text-decoration: underline;
}

.page-faq .faq-contact__trust {
  border-top: 1px solid rgba(224, 230, 239, 0.12);
  padding-top: 16px;
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0;
  max-width: 480px;
}

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

.page-faq .faq-contact__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid rgba(0, 163, 255, 0.35);
  box-shadow: var(--shadow-lg);
}

.page-faq .faq-contact__media figcaption {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--color-text-muted);
  padding: 10px 0 0;
  letter-spacing: 0.04em;
}

/* ---------- Desktop adjustments ---------- */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 40px 0 56px;
  }

  .page-faq .faq-hero__statusbar {
    gap: 0;
  }

  .page-faq .faq-hero__status-item + .faq-hero__status-item {
    border-left: 1px solid rgba(224, 230, 239, 0.15);
    padding-left: 28px;
    margin-left: 28px;
  }

  .page-faq .faq-hero__lead {
    font-size: 18px;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: 1fr 380px;
    align-items: center;
    gap: 48px;
  }
}

@media (min-width: 992px) {
  .page-faq .faq-layout {
    grid-template-columns: 280px minmax(0, 1fr);
    align-items: start;
    gap: 40px;
  }

  .page-faq .faq-index {
    display: block;
    position: sticky;
    top: 24px;
    background: var(--faq-card);
    border: 1px solid var(--faq-line);
    padding: 24px 20px;
    box-shadow: var(--shadow-md);
  }

  .page-faq .faq-index__label {
    font-family: var(--font-data);
    font-size: 12px;
    letter-spacing: 0.3em;
    color: var(--color-primary);
    margin-bottom: 10px;
  }

  .page-faq .faq-index__title {
    font-size: 22px;
    font-weight: 900;
    transform: skew(-5deg);
    margin: 0 0 6px;
    color: var(--faq-ink);
  }

  .page-faq .faq-index__meta {
    font-size: 12px;
    color: var(--faq-ink-soft);
    border-left: 2px solid var(--color-primary-2);
    padding-left: 8px;
    margin: 0 0 12px;
  }

  .page-faq .faq-index__list {
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .page-faq .faq-index__item {
    border-top: 1px solid var(--faq-line);
  }

  .page-faq .faq-index__item a {
    display: flex;
    gap: 10px;
    align-items: baseline;
    padding: 10px 2px;
    text-decoration: none;
    color: var(--faq-ink-soft);
    font-size: 13px;
    transition: color var(--transition), padding-left var(--transition);
  }

  .page-faq .faq-index__item a:hover {
    color: var(--color-primary);
    padding-left: 8px;
  }

  .page-faq .faq-index__num {
    font-family: var(--font-data);
    font-size: 12px;
    color: var(--color-primary);
    min-width: 2.8em;
    text-align: right;
  }

  .page-faq .faq-qa {
    padding: 48px 0 80px;
  }

  .page-faq .faq-item__question {
    font-size: 16px;
  }

  .page-faq .faq-item__answer-inner {
    padding-left: 66px;
  }
}