/* ==========================================
   FAQ 支持中心 | page-faq
   全部选择器限定在 .page-faq 作用域内
   ========================================== */
.page-faq {
  --faq-aside-w: 17rem;
  scroll-behavior: smooth;
}

/* ---------- Hero 区 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(140deg, var(--x-blue-deep) 0%, var(--x-blue) 48%, var(--x-teal) 100%);
  color: var(--x-white);
  padding-top: 6rem;
  padding-bottom: 3rem;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -15%;
  width: 55%;
  height: 140%;
  background: linear-gradient(135deg, rgba(27, 231, 255, 0.12) 0%, rgba(212, 168, 67, 0.05) 100%);
  transform: skewX(-16deg);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent 0,
    transparent 20px,
    rgba(212, 168, 67, 0.05) 20px,
    rgba(212, 168, 67, 0.05) 21px
  );
  pointer-events: none;
}

.page-faq .faq-hero .x-container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .x-breadcrumb {
  margin-bottom: 2.5rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

.page-faq .faq-hero .x-breadcrumb a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color var(--x-transition);
}

.page-faq .faq-hero .x-breadcrumb a:hover {
  color: var(--x-gold);
}

.page-faq .faq-hero .x-breadcrumb-sep {
  margin: 0 0.4rem;
  color: rgba(255, 255, 255, 0.35);
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: 2rem;
}

.page-faq .faq-hero-title {
  margin: 1rem 0 1.25rem;
  font-size: clamp(1.9rem, 5vw, 3.25rem);
  line-height: 1.12;
}

.page-faq .faq-hero-sub {
  max-width: 34rem;
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.75);
}

.page-faq .faq-hero-stats {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-self: end;
  background: rgba(10, 27, 42, 0.45);
  border: 1px solid rgba(212, 168, 67, 0.3);
  padding: 1.25rem;
}

.page-faq .faq-hero-stats::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: calc(100% + 2px);
  height: 3px;
  background: linear-gradient(90deg, var(--x-gold), var(--x-electric), transparent 80%);
}

.page-faq .faq-stat-item {
  display: flex;
  flex-direction: row;
  align-items: baseline;
  gap: 0.75rem;
}

.page-faq .faq-hero .x-stat {
  color: var(--x-gold);
  font-size: 2rem;
  line-height: 1;
}

.page-faq .faq-hero .x-stat-label {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
}

@media (min-width: 30rem) {
  .page-faq .faq-hero-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-stat-item {
    flex-direction: column;
    gap: 0.35rem;
  }
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  background: var(--x-warm);
  padding: 2.25rem 0 4.5rem;
}

.page-faq .faq-index-panel {
  position: relative;
  background: linear-gradient(180deg, var(--x-blue) 0%, var(--x-blue-deep) 100%);
  color: var(--x-white);
  padding: 1.75rem 1.5rem;
  margin-bottom: 2rem;
  border: 1px solid rgba(212, 168, 67, 0.18);
}

.page-faq .faq-index-panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: calc(100% + 2px);
  height: 5px;
  background: repeating-linear-gradient(
    -45deg,
    var(--x-gold) 0 8px,
    #8a6b1f 8px 16px
  );
}

.page-faq .faq-index-sticky {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-faq .faq-index-kicker {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--x-gold);
}

.page-faq .faq-index-nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.page-faq .faq-index-link {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.7rem 0.5rem;
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color var(--x-transition), background var(--x-transition), padding-left var(--x-transition);
}

.page-faq .faq-index-link:hover {
  color: var(--x-gold);
  background: rgba(212, 168, 67, 0.08);
  padding-left: 0.8rem;
}

.page-faq .faq-index-num {
  min-width: 2rem;
  font-family: var(--x-font-mono);
  color: var(--x-red);
  font-weight: 800;
  font-size: 0.85rem;
}

.page-faq .faq-index-foot {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  margin-top: 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.page-faq .faq-index-foot-label {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

.page-faq .faq-index-foot-note {
  margin: 0;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8rem;
}

/* ---------- FAQ 主区 ---------- */
.page-faq .faq-main {
  padding-top: 0.25rem;
}

.page-faq .faq-section {
  margin-bottom: 3.5rem;
  scroll-margin-top: 5rem;
}

.page-faq .faq-section-head {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  border-bottom: 2px solid var(--x-gold);
  padding-bottom: 0.6rem;
  margin-bottom: 1.5rem;
}

.page-faq .faq-section-title {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--x-ink);
  letter-spacing: -0.01em;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.page-faq .faq-item {
  position: relative;
  background: var(--x-white);
  border: 1px solid #e2e2e2;
  box-shadow: 0 2px 8px rgba(6, 15, 24, 0.05);
  transition: border-color var(--x-transition), box-shadow var(--x-transition);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--x-blue), var(--x-teal));
  transition: background var(--x-transition);
}

.page-faq .faq-item[open] {
  border-color: rgba(212, 168, 67, 0.6);
  box-shadow: 0 6px 20px rgba(6, 15, 24, 0.1);
}

.page-faq .faq-item[open]::before {
  background: linear-gradient(180deg, var(--x-gold), #8a6b1f);
}

.page-faq .faq-question {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.05rem 1.25rem;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.4;
  color: var(--x-ink);
  user-select: none;
  transition: background var(--x-transition), color var(--x-transition);
}

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

.page-faq .faq-question:hover {
  background: rgba(11, 27, 42, 0.03);
}

.page-faq .faq-item[open] .faq-question {
  color: var(--x-blue);
}

.page-faq .faq-q-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: var(--x-red);
  color: var(--x-white);
  font-family: var(--x-font-mono);
  font-size: 0.875rem;
  font-weight: 800;
  flex-shrink: 0;
  clip-path: polygon(0 0, 100% 0, 100% 78%, 78% 100%, 0 100%);
}

.page-faq .faq-q-toggle {
  position: relative;
  margin-left: auto;
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  opacity: 0.6;
  transition: opacity var(--x-transition);
}

.page-faq .faq-q-toggle::before,
.page-faq .faq-q-toggle::after {
  content: "";
  position: absolute;
  background: var(--x-gold);
  transition: transform var(--x-transition);
}

.page-faq .faq-q-toggle::before {
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .faq-q-toggle::after {
  top: 0;
  left: 50%;
  width: 2px;
  height: 100%;
  transform: translateX(-50%) scaleY(1);
}

.page-faq .faq-item[open] .faq-q-toggle {
  opacity: 1;
}

.page-faq .faq-item[open] .faq-q-toggle::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-answer {
  padding: 0 1.5rem 1.25rem 4.05rem;
  font-size: 0.9rem;
  line-height: 1.75;
  color: #4a5568;
}

.page-faq .faq-answer p {
  margin: 0 0 0.5rem;
}

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

.page-faq .faq-answer a {
  color: var(--x-blue);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 168, 67, 0.6);
  transition: border-color var(--x-transition), color var(--x-transition);
}

.page-faq .faq-answer a:hover {
  color: var(--x-gold);
  border-color: var(--x-gold);
}

/* ---------- 下载信息卡 ---------- */
.page-faq .faq-download-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
  padding: 1.5rem;
  background: linear-gradient(135deg, rgba(27, 231, 255, 0.08) 0%, transparent 60%), var(--x-blue-light);
  border: 1px solid rgba(212, 168, 67, 0.22);
}

.page-faq .faq-download-tag {
  display: inline-block;
  background: var(--x-gold);
  color: var(--x-blue-deep);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
}

.page-faq .faq-download-copy .x-body-copy {
  margin: 0.9rem 0 1.1rem;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.85);
}

.page-faq .faq-download-copy .x-btn-ghost {
  border-color: var(--x-gold);
  color: var(--x-gold);
}

.page-faq .faq-download-copy .x-btn-ghost:hover {
  background: rgba(212, 168, 67, 0.15);
}

.page-faq .faq-download-img,
.page-faq .faq-device-img {
  overflow: hidden;
  border-radius: var(--x-radius);
}

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

/* ---------- 设备图 ---------- */
.page-faq .faq-device-img {
  margin-top: 1.5rem;
  border: 1px solid rgba(212, 168, 67, 0.4);
}

/* ---------- 反馈 CTA ---------- */
.page-faq .faq-feedback-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: linear-gradient(135deg, var(--x-blue) 0%, var(--x-teal) 100%);
  color: var(--x-white);
  border-left: 4px solid var(--x-gold);
}

.page-faq .faq-feedback-cta p {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 48rem) {
  .page-faq .faq-download-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

@media (min-width: 64rem) {
  .page-faq .faq-hero {
    padding-top: 7rem;
    padding-bottom: 4rem;
  }

  .page-faq .faq-hero-inner {
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: end;
  }

  .page-faq .faq-hero-stats {
    padding: 1.5rem;
  }

  .page-faq .faq-layout {
    padding: 3.5rem 0 6rem;
  }

  .page-faq .faq-index-panel {
    position: sticky;
    top: calc(var(--x-header-h) + 1.5rem);
    height: fit-content;
    margin-bottom: 0;
  }
}