/* ========== Page FAQ 专属样式 ========== */
.page-faq {
  --faq-border: #2A355A;
  --faq-card: #121728;
  --faq-line: #00FF9D;
  --faq-warm: #FF5C39;
  overflow-x: clip;
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 104px 0 56px;
  border-bottom: 1px solid var(--faq-border);
  overflow: hidden;
}

.page-faq .faq-hero__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(42, 53, 90, .28) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 53, 90, .28) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .75), transparent 92%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .75), transparent 92%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--faq-line), transparent 55%, var(--faq-warm));
  opacity: .55;
}

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

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 40px;
}

.page-faq .faq-hero .section-kicker {
  margin-bottom: 12px;
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 4.8vw, 54px);
  line-height: 1.16;
  max-width: 18em;
  letter-spacing: .01em;
  font-weight: 900;
  border-left: 4px solid var(--faq-line);
  padding-left: 20px;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 640px;
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 16px;
}

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

@media (min-width: 960px) {
  .page-faq .faq-hero__deco {
    display: block;
    position: absolute;
    right: 6%;
    top: 18%;
    font-family: var(--font-headline);
    font-size: clamp(140px, 22vw, 300px);
    line-height: 1;
    font-weight: 900;
    color: transparent;
    -webkit-text-stroke: 1px rgba(42, 53, 90, .55);
    opacity: .5;
    user-select: none;
    pointer-events: none;
  }
}

/* ---------- 页面容器与布局 ---------- */
.page-faq .faq-container {
  max-width: 1180px;
}

.page-faq .faq-layout {
  padding: 64px 0 80px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 48px;
}

/* ---------- 左侧目录区 ---------- */
.page-faq .faq-aside__media {
  border: 1px solid var(--faq-border);
  background: var(--faq-card);
  max-width: 360px;
}

.page-faq .faq-aside__img {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-aside__label {
  margin: 32px 0 0;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--faq-border);
  font-family: var(--font-number);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--text-secondary);
}

.page-faq .faq-nav {
  margin-top: 8px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 4px;
}

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

.page-faq .faq-nav__link {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--faq-border);
  background: rgba(18, 23, 40, .65);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: border-color .18s ease, color .18s ease, background .18s ease;
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  border-color: rgba(0, 255, 157, .5);
  color: var(--faq-line);
  outline: none;
}

.page-faq .faq-nav__num {
  font-family: var(--font-number);
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: .08em;
}

.page-faq .faq-nav__link:hover .faq-nav__num,
.page-faq .faq-nav__link:focus-visible .faq-nav__num {
  color: var(--faq-line);
}

.page-faq .faq-aside__note {
  margin-top: 20px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--faq-border);
  font-size: 13px;
  color: var(--text-secondary);
}

.page-faq .faq-aside__note-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--faq-line);
  animation: page-faq-pulse 2.4s ease-in-out infinite;
}

@keyframes page-faq-pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: .35;
    transform: scale(.8);
  }
}

/* ---------- 右侧问答区块 ---------- */
.page-faq .faq-block {
  margin-bottom: 56px;
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.page-faq .faq-block__head {
  display: flex;
  align-items: center;
  gap: 14px;
  position: relative;
  margin-bottom: 22px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-border);
}

.page-faq .faq-block__head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 64px;
  height: 2px;
  background: var(--faq-line);
}

.page-faq .faq-block__num {
  font-family: var(--font-number);
  font-size: 13px;
  color: var(--faq-line);
  line-height: 1;
  padding: 6px 10px;
  border: 1px solid rgba(0, 255, 157, .35);
  background: rgba(0, 255, 157, .08);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 100%, 0 100%);
}

.page-faq .faq-block__head h2 {
  font-family: var(--font-headline);
  font-size: 22px;
  line-height: 1.3;
  margin: 0;
}

/* ---------- 手风琴条目 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--faq-border);
  border-left: 3px solid rgba(42, 53, 90, .9);
  margin: 0 0 12px;
  background: var(--faq-card);
  transition: border-color .2s ease, transform .2s ease;
}

.page-faq .faq-item[open] {
  border-left-color: var(--faq-line);
}

.page-faq .faq-item:focus-within {
  border-color: rgba(255, 209, 102, .45);
}

.page-faq .faq-item__question {
  list-style: none;
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0;
  padding: 18px 20px;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  transition: color .18s ease;
}

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

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

.page-faq .faq-item__question:hover {
  color: var(--faq-line);
}

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

.page-faq .faq-item__num {
  font-family: var(--font-number);
  font-size: 13px;
  color: var(--faq-line);
  letter-spacing: .06em;
  line-height: 1;
  background: rgba(0, 255, 157, .08);
  padding: 4px 6px;
}

.page-faq .faq-item__title {
  flex: 1;
  min-width: 0;
}

.page-faq .faq-item__question::after {
  content: "+";
  flex-shrink: 0;
  font-family: var(--font-number);
  font-size: 22px;
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1;
  transform: translateY(2px);
  transition: color .18s ease, transform .2s ease;
}

.page-faq .faq-item[open] .faq-item__question::after {
  content: "−";
  color: var(--faq-line);
}

.page-faq .faq-item__answer {
  padding: 0 20px 20px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

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

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

.page-faq .faq-item__answer a {
  color: var(--faq-line);
  text-decoration: underline;
  text-decoration-color: rgba(0, 255, 157, .35);
  text-underline-offset: 4px;
}

.page-faq .faq-item__answer a:hover {
  text-decoration-color: var(--faq-line);
}

.page-faq .faq-item[open] .faq-item__answer {
  animation: page-faq-answer-in .22s ease-out;
}

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

/* ---------- 底部联系引导区 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: 24px;
  border: 1px solid var(--faq-border);
  border-top: 3px solid var(--faq-warm);
  background:
    linear-gradient(135deg, rgba(255, 92, 57, .06), transparent 40%),
    var(--faq-card);
  margin: 0 0 80px;
}

.page-faq .faq-contact__media {
  border: 1px solid var(--faq-border);
  overflow: hidden;
}

.page-faq .faq-contact__media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-contact__content .section-kicker {
  margin-bottom: 8px;
}

.page-faq .faq-contact__content h2 {
  font-family: var(--font-headline);
  font-size: 24px;
  line-height: 1.3;
  margin: 8px 0 12px;
}

.page-faq .faq-contact__content p {
  margin: 0 0 20px;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 48ch;
}

/* ---------- 桌面端增强 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 72px;
    align-items: start;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: calc(var(--header-height) + 40px);
  }

  .page-faq .faq-aside__media {
    max-width: none;
  }

  .page-faq .faq-nav {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    margin-top: 8px;
  }

  .page-faq .faq-nav__link {
    flex-shrink: 1;
    border: none;
    border-bottom: 1px solid rgba(42, 53, 90, .6);
    border-radius: 0;
    background: transparent;
    padding: 14px 2px;
  }

  .page-faq .faq-nav__link:hover,
  .page-faq .faq-nav__link:focus-visible {
    border-bottom-color: rgba(0, 255, 157, .4);
    border-left: 2px solid var(--faq-line);
    padding-left: 10px;
    background: transparent;
  }

  .page-faq .faq-contact {
    grid-template-columns: 420px minmax(0, 1fr);
    align-items: center;
    gap: 48px;
    padding: 36px;
  }
}