.page-faq {
  --faq-divider: rgba(196, 201, 209, 0.14);
  --faq-radius: 18px;
  --faq-green-dim: rgba(0, 245, 140, 0.12);
  position: relative;
  background: var(--bg-deep);
  color: var(--text-white);
  min-height: 600px;
  overflow-x: clip;
}

.page-faq .container {
  padding-top: 48px;
  padding-bottom: 80px;
  position: relative;
}

/* ===== Hero ===== */
.page-faq__hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding: 32px 24px 40px;
  border-radius: var(--faq-radius);
  background: var(--bg-dark);
  border: 1px solid var(--faq-divider);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  margin-bottom: 48px;
}

.page-faq__hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(0, 245, 140, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 245, 140, 0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.page-faq__hero::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(0, 245, 140, 0.08), transparent 65%);
  pointer-events: none;
}

.page-faq__hero-copy,
.page-faq__hero-side {
  position: relative;
  z-index: 1;
}

.page-faq__hero-copy::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 72px;
  height: 4px;
  border-radius: 2px;
  background: var(--accent-green);
}

.page-faq__hero .breadcrumbs {
  margin-bottom: 28px;
}

.page-faq__eyebrow {
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-green);
  margin-bottom: 10px;
}

.page-faq__title {
  font-family: var(--font-display);
  font-size: clamp(1.875rem, 5vw, 3.5rem);
  line-height: 1.1;
  margin: 0 0 18px;
  max-width: 22ch;
}

.page-faq__lead {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-gray);
  max-width: 60ch;
  margin: 0 0 26px;
}

.page-faq__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--text-gray);
  text-decoration: none;
  border: 1px solid var(--faq-divider);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  transition: border-color 0.3s var(--ease-out), color 0.3s var(--ease-out), background 0.3s var(--ease-out);
}

.page-faq__tag:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
  background: var(--faq-green-dim);
}

.page-faq__hero-side {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-faq__stat {
  flex: 1 1 100%;
  margin: 0;
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--faq-divider);
  border-radius: 14px;
}

.page-faq__stat--green {
  background: var(--faq-green-dim);
  border-color: rgba(0, 245, 140, 0.22);
}

.page-faq__stat-label {
  margin: 0 0 8px;
  font-size: 0.8125rem;
  color: var(--text-gray);
  line-height: 1.4;
}

.page-faq__stat-value {
  margin: 0;
  font-family: var(--font-data);
  font-size: 2.25rem;
  line-height: 1;
  font-weight: 700;
  color: var(--accent-green);
}

/* ===== 左右分栏布局 ===== */
.page-faq__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: start;
}

/* ===== 左侧索引 ===== */
.page-faq__index {
  position: relative;
  top: 0;
}

.page-faq__index-card {
  background: var(--bg-dark);
  border: 1px solid var(--faq-divider);
  border-radius: var(--faq-radius);
  padding: 20px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-faq__index-media {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 20px;
}

.page-faq__index-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

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

.page-faq__index-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 4px;
  text-decoration: none;
  color: var(--text-white);
  font-size: 0.9375rem;
  font-weight: 500;
  border-bottom: 1px solid var(--faq-divider);
  transition: color 0.3s var(--ease-out), padding-left 0.3s var(--ease-out);
}

.page-faq__index-link:hover {
  color: var(--accent-green);
  padding-left: 10px;
}

.page-faq__index-no {
  font-family: var(--font-data);
  font-size: 0.8125rem;
  color: var(--accent-green);
  opacity: 0.7;
}

.page-faq__index-note {
  margin-top: 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--faq-divider);
  border-radius: 12px;
}

.page-faq__index-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 0 4px rgba(0, 245, 140, 0.12);
  flex-shrink: 0;
  margin-top: 6px;
  animation: faq-pulse 2.4s var(--ease-out) infinite;
}

@keyframes faq-pulse {
  0%, 100% {
    box-shadow: 0 0 0 4px rgba(0, 245, 140, 0.12);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(0, 245, 140, 0.04);
  }
}

.page-faq__index-note p {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--text-gray);
  line-height: 1.7;
}

/* ===== 右侧问答区 ===== */
.page-faq__answers {
  display: flex;
  flex-direction: column;
  gap: 56px;
}

.page-faq__section {
  scroll-margin-top: 120px;
}

.page-faq__section-head {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 20px;
  padding: 0 0 12px;
  border-bottom: 1px solid var(--faq-divider);
  transition: border-color 0.4s var(--ease-out);
}

.page-faq__section:target .page-faq__section-head {
  border-bottom-color: var(--accent-green);
}

.page-faq__section-num {
  font-family: var(--font-data);
  font-size: 2.625rem;
  line-height: 1;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 245, 140, 0.5);
  flex-shrink: 0;
  transition: -webkit-text-stroke-color 0.4s var(--ease-out);
}

.page-faq__section:target .page-faq__section-num {
  -webkit-text-stroke-color: var(--accent-green);
}

.page-faq__section-heading h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.2;
  margin: 0 0 6px;
}

.page-faq__section-heading p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-gray);
  line-height: 1.6;
}

.page-faq__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ===== 手风琴 ===== */
.page-faq__item {
  background: var(--bg-dark);
  border: 1px solid var(--faq-divider);
  border-radius: 14px;
  transition: border-color 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
}

.page-faq__item[open] {
  border-color: rgba(0, 245, 140, 0.32);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.page-faq__item summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  display: block;
  padding: 18px 52px 18px 20px;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--text-white);
  border-radius: 14px;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.3s var(--ease-out);
}

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

.page-faq__item summary:hover {
  color: var(--accent-green);
}

.page-faq__item summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: transparent;
  transition: background 0.35s var(--ease-out);
}

.page-faq__item[open] summary::before {
  background: var(--accent-green);
}

.page-faq__item summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 18px;
  transform: translateY(-50%);
  font-family: var(--font-data);
  font-size: 1.375rem;
  line-height: 1;
  color: var(--text-gray);
  transition: transform 0.35s var(--ease-out), color 0.35s var(--ease-out);
}

.page-faq__item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
  color: var(--accent-green);
}

.page-faq__answer {
  padding: 4px 44px 20px 20px;
  color: var(--text-gray);
  font-size: 0.9375rem;
  line-height: 1.75;
  max-width: 66ch;
}

.page-faq__answer p {
  margin: 0;
}

.page-faq__answer a {
  color: var(--accent-green);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.3s var(--ease-out);
}

.page-faq__answer a:hover {
  color: var(--text-white);
}

/* ===== 底部支持卡 ===== */
.page-faq__support {
  margin-top: 64px;
  display: grid;
  grid-template-columns: 1fr;
  background: var(--bg-dark);
  border: 1px solid var(--faq-divider);
  border-radius: var(--faq-radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.page-faq__support-media {
  position: relative;
  min-height: 240px;
}

.page-faq__support-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.page-faq__support-body {
  padding: 28px 24px;
}

.page-faq__support-kicker {
  font-family: var(--font-data);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-orange);
  margin-bottom: 6px;
}

.page-faq__support-body h2 {
  font-family: var(--font-display);
  font-size: 1.625rem;
  margin: 0 0 12px;
}

.page-faq__support-desc {
  color: var(--text-gray);
  font-size: 0.9375rem;
  line-height: 1.75;
  margin: 0 0 20px;
  max-width: 54ch;
}

.page-faq__contact {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
}

.page-faq__contact-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--faq-divider);
}

.page-faq__contact-item:last-child {
  border-bottom: none;
}

.page-faq__contact-label {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--text-gray);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.page-faq__contact-value {
  font-family: var(--font-data);
  font-size: 0.8125rem;
  color: var(--text-white);
  word-break: break-all;
  text-align: right;
}

.page-faq__support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq__support-actions .btn--ghost {
  border-color: var(--faq-divider);
  color: var(--text-gray);
}

.page-faq__support-actions .btn--ghost:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

/* ===== 响应式：平板与桌面 ===== */
@media (min-width: 768px) {
  .page-faq .container {
    padding-top: 56px;
    padding-bottom: 100px;
  }

  .page-faq__hero {
    grid-template-columns: 1.4fr 0.7fr;
    gap: 48px;
    padding: 40px 40px 44px;
  }

  .page-faq__title {
    font-size: clamp(2.25rem, 4vw, 3.5rem);
  }

  .page-faq__hero-side {
    flex-direction: column;
    gap: 12px;
  }

  .page-faq__stat {
    flex: 1 1 auto;
  }

  .page-faq__layout {
    grid-template-columns: 280px 1fr;
    gap: 48px;
  }

  .page-faq__index {
    position: sticky;
    top: 100px;
  }

  .page-faq__index-card {
    padding: 24px;
  }

  .page-faq__answers {
    gap: 72px;
  }

  .page-faq__section-num {
    font-size: 3.25rem;
  }

  .page-faq__section-heading h2 {
    font-size: 1.75rem;
  }

  .page-faq__support {
    grid-template-columns: 0.9fr 1.1fr;
    margin-top: 80px;
  }

  .page-faq__support-media {
    min-height: 320px;
  }

  .page-faq__support-img {
    aspect-ratio: auto;
    height: 100%;
    position: absolute;
    inset: 0;
  }

  .page-faq__support-body {
    padding: 40px 40px 36px;
  }

  .page-faq__contact {
    grid-template-columns: 1fr 1fr;
    column-gap: 32px;
  }

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

@media (min-width: 1100px) {
  .page-faq__support-desc {
    font-size: 1rem;
  }
}