.page-faq {
  --faq-grid-line: rgba(0, 229, 255, 0.07);
  --faq-cyan-soft: rgba(0, 229, 255, 0.1);
  --faq-orange-soft: rgba(255, 106, 0, 0.12);
  background: var(--bg-deep);
}

/* ===== Hero 首屏 ===== */
.page-faq .faq-hero {
  padding: 2.5rem 0 3rem;
  background:
    radial-gradient(ellipse at 85% 8%, rgba(0, 229, 255, 0.08), transparent 50%),
    linear-gradient(var(--faq-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-grid-line) 1px, transparent 1px);
  background-size: auto, 44px 44px, 44px 44px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 1.25rem;
}

.page-faq .faq-hero .section-eyebrow {
  margin-bottom: 0.75rem;
  color: var(--orange);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.75rem, 10vw, 5.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin: 0 0 1.25rem;
}

.page-faq .faq-hero h1::after {
  content: "";
  display: block;
  width: 4.5rem;
  height: 4px;
  margin-top: 1.25rem;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.page-faq .faq-hero-lead {
  color: var(--text-sub);
  font-size: 1.0625rem;
  line-height: 1.8;
  max-width: 60ch;
  margin: 0;
}

/* ===== 快速跳转胶囊导航 ===== */
.page-faq .faq-quick-nav {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding: 0.25rem 0 0.5rem;
  margin-top: 1.75rem;
  scrollbar-width: none;
}

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

.page-faq .faq-quick-item {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.125rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(20, 27, 36, 0.85);
  color: var(--text-main);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-quick-item:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--faq-cyan-soft);
  transform: translateY(-2px);
}

.page-faq .faq-quick-num {
  font-family: var(--font-num);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--orange);
}

/* ===== Hero 横幅图 ===== */
.page-faq .faq-hero-banner {
  position: relative;
  margin-top: 1.75rem;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 1rem), calc(100% - 1rem) 100%, 0 100%);
  background: var(--bg-elev);
}

.page-faq .faq-hero-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 55%, rgba(0, 229, 255, 0.18));
  pointer-events: none;
}

.page-faq .faq-hero-banner img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ===== FAQ 分组区块 ===== */
.page-faq .faq-group {
  padding: 3rem 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 1rem;
}

.page-faq .faq-group-alt {
  background: var(--bg-panel);
}

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

.page-faq .faq-group-side {
  position: relative;
  padding-top: 0.25rem;
}

.page-faq .faq-group-index {
  position: absolute;
  top: -1.75rem;
  right: 0;
  font-family: var(--font-num);
  font-size: clamp(4.5rem, 14vw, 7rem);
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 229, 255, 0.14);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.page-faq .faq-group-side > *:not(.faq-group-index) {
  position: relative;
  z-index: 1;
}

.page-faq .faq-group-side h2 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  color: var(--text-main);
  margin: 0 0 0.75rem;
}

.page-faq .faq-group-side p {
  color: var(--text-sub);
  line-height: 1.7;
  font-size: 0.9375rem;
  margin: 0 0 1.5rem;
}

.page-faq .faq-group-side .btn {
  margin-top: 0.5rem;
}

/* ===== 手风琴列表 ===== */
.page-faq .faq-group-list {
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 0.75rem;
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease;
}

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

.page-faq .faq-item summary:hover {
  background: rgba(0, 229, 255, 0.03);
}

.page-faq .faq-q-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--faq-cyan-soft);
  color: var(--cyan);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1rem;
  flex-shrink: 0;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-item[open] .faq-q-mark {
  background: var(--cyan);
  color: var(--bg-deep);
}

.page-faq .faq-q-text {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.45;
  color: var(--text-main);
  flex: 1;
}

.page-faq .faq-item[open] .faq-q-text {
  color: var(--cyan);
}

.page-faq .faq-icon {
  position: relative;
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

.page-faq .faq-icon::before,
.page-faq .faq-icon::after {
  content: "";
  position: absolute;
  background: var(--text-sub);
  transition: transform 0.25s ease, background-color 0.25s ease;
}

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

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

.page-faq .faq-item[open] .faq-icon::before {
  background: var(--cyan);
}

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

@keyframes faq-fade-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-item[open] .faq-a {
  animation: faq-fade-in 0.3s ease;
}

.page-faq .faq-a {
  padding: 0 1.5rem 1.75rem calc(0.75rem + 2.25rem + 1rem);
  color: var(--text-sub);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.page-faq .faq-a p + p {
  margin-top: 0.75rem;
}

.page-faq .faq-a strong {
  color: var(--cyan);
  font-weight: 600;
}

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.35);
  transition: border-color 0.2s ease;
}

.page-faq .faq-a a:hover {
  border-bottom-color: var(--cyan);
}

/* ===== 底部联系支持区块 ===== */
.page-faq .faq-contact {
  padding: 3.5rem 0;
  background:
    radial-gradient(ellipse at 20% 70%, var(--faq-orange-soft), transparent 55%),
    var(--bg-deep);
}

.page-faq .faq-contact-grid {
  display: grid;
  gap: 2.25rem;
}

.page-faq .faq-contact-copy .section-eyebrow {
  color: var(--orange);
  margin-bottom: 0.75rem;
}

.page-faq .faq-contact-copy h2 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.75rem, 5vw, 2.4rem);
  color: var(--text-main);
  margin: 0 0 0.75rem;
}

.page-faq .faq-contact-lead {
  color: var(--text-sub);
  line-height: 1.7;
  font-size: 0.9375rem;
  margin-bottom: 1.75rem;
}

.page-faq .faq-contact-lines {
  display: grid;
  gap: 0.875rem;
  margin-bottom: 1.5rem;
}

.page-faq .faq-contact .contact-line {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-size: 0.9375rem;
}

.page-faq .faq-contact .contact-line span {
  color: var(--text-sub);
  flex-shrink: 0;
  min-width: 4.5rem;
  font-size: 0.875rem;
}

.page-faq .faq-contact .contact-line a {
  color: var(--text-main);
  font-family: var(--font-num);
  font-weight: 700;
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-faq .faq-contact .contact-line a:hover {
  color: var(--cyan);
}

.page-faq .faq-contact .contact-note {
  border-left: 3px solid var(--orange);
  padding-left: 0.875rem;
  color: var(--text-sub);
  font-size: 0.8125rem;
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

.page-faq .faq-contact .btn-primary {
  align-self: flex-start;
}

.page-faq .faq-contact-visual {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--bg-elev);
}

.page-faq .faq-contact-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 45%, rgba(255, 106, 0, 0.14));
  pointer-events: none;
}

.page-faq .faq-contact-visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ===== 桌面端布局 ===== */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 4rem 0 4.5rem;
  }

  .page-faq .faq-hero h1 {
    font-size: clamp(3.5rem, 7vw, 5.75rem);
  }

  .page-faq .faq-quick-nav {
    margin-top: 2.25rem;
  }

  .page-faq .faq-hero-banner {
    margin-top: 2.25rem;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 2rem), calc(100% - 2rem) 100%, 0 100%);
  }

  .page-faq .faq-group {
    padding: 4.5rem 0;
  }

  .page-faq .faq-group-grid {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 4rem;
    align-items: start;
  }

  .page-faq .faq-group-side {
    padding-top: 0.5rem;
  }

  .page-faq .faq-group-side p {
    max-width: 34ch;
  }

  .page-faq .faq-contact {
    padding: 5rem 0;
  }

  .page-faq .faq-contact-grid {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
  }
}