.page-faq {
  --faq-gutter: clamp(24px, 4vw, 64px);
  --faq-green-soft: rgba(198, 255, 58, 0.14);
  --faq-blue-soft: rgba(0, 229, 255, 0.12);
  --faq-amber-soft: rgba(255, 179, 0, 0.16);
  background: var(--bg-deep);
  color: var(--text-light);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: clip;
}

/* ===== Hero ===== */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + 56px) 0 72px;
  overflow: hidden;
  background:
    radial-gradient(circle at 78% 18%, var(--faq-blue-soft), transparent 34%),
    radial-gradient(circle at 10% 72%, rgba(198, 255, 58, 0.07), transparent 28%),
    var(--bg-deep);
}

.page-faq .faq-hero__pitch {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  color: var(--accent-blue);
  opacity: 0.9;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 52px;
  background: var(--bg-deep);
  clip-path: polygon(0 52px, 100% 0, 100% 52px, 0 52px);
  z-index: 1;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--faq-gutter);
  display: grid;
  gap: 36px;
}

.page-faq .faq-hero__breadcrumb {
  margin: 0 0 22px;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-size: 15px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent-green);
}

.page-faq .faq-hero__main h1 {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.12;
  letter-spacing: 0.01em;
  max-width: 12em;
}

.page-faq .faq-hero__lead {
  margin: 0 0 26px;
  max-width: 40em;
  color: var(--text-muted);
  font-size: 16px;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.page-faq .faq-hero__side {
  align-self: stretch;
}

.page-faq .faq-hero__statcard {
  height: 100%;
  min-height: 220px;
  border: 1px solid rgba(242, 245, 255, 0.08);
  border-radius: var(--radius-card);
  background:
    radial-gradient(circle at 90% 8%, var(--faq-blue-soft), transparent 42%),
    linear-gradient(135deg, rgba(22, 24, 34, 0.92), rgba(26, 34, 51, 0.78));
  padding: 26px 24px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.page-faq .faq-hero__statcard::before {
  content: "";
  position: absolute;
  top: -52px;
  right: -52px;
  width: 160px;
  height: 160px;
  border: 1px solid rgba(0, 229, 255, 0.22);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-hero__statcard-title {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-size: 16px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.page-faq .faq-hero__stats {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.page-faq .faq-hero__stat {
  flex: 1 1 96px;
  padding: 14px 12px;
  border-radius: 18px;
  background: rgba(13, 15, 26, 0.42);
  text-align: center;
}

.page-faq .faq-hero__stat-value {
  display: block;
  font-family: var(--font-data);
  font-size: 38px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--accent-green);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__stat-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.page-faq .faq-hero__support {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  padding: 11px 20px;
  border-radius: var(--radius-pill);
  background: rgba(198, 255, 58, 0.1);
  border: 1px solid rgba(198, 255, 58, 0.3);
  color: var(--accent-green);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  align-self: flex-start;
  transition: background 0.22s, transform 0.22s;
}

.page-faq .faq-hero__support:hover {
  background: rgba(198, 255, 58, 0.2);
  transform: translateY(-2px);
}

/* ===== 主内容区 ===== */
.page-faq .faq-main {
  background: var(--bg-deep);
}

.page-faq .faq-main__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 48px var(--faq-gutter) 96px;
  display: grid;
  gap: 40px;
}

/* ===== 目录 ===== */
.page-faq .faq-toc {
  position: sticky;
  top: calc(var(--header-h) + 8px);
  z-index: 20;
  margin-bottom: 8px;
  align-self: start;
}

.page-faq .faq-toc__box {
  background: rgba(13, 15, 26, 0.86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(242, 245, 255, 0.09);
  border-radius: var(--radius-pill);
  padding: 12px 14px;
}

.page-faq .faq-toc__title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 2px 8px 10px;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-green);
}

.page-faq .faq-toc__title span {
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--text-muted);
}

.page-faq .faq-toc__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  list-style: none;
  margin: 0;
  padding: 2px;
  scrollbar-width: none;
}

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

.page-faq .faq-toc__list a {
  display: block;
  padding: 8px 15px;
  border-radius: var(--radius-pill);
  background: rgba(242, 245, 255, 0.05);
  color: var(--text-light);
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.page-faq .faq-toc__list a:hover {
  background: var(--faq-green-soft);
  color: var(--accent-green);
}

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

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

/* ===== FAQ 版块 ===== */
.page-faq .faq-content {
  min-width: 0;
}

.page-faq .faq-zone {
  scroll-margin-top: calc(var(--header-h) + 24px);
  position: relative;
}

.page-faq .faq-zone + .faq-zone {
  margin-top: 72px;
}

.page-faq .faq-zone + .faq-zone::before {
  content: "";
  display: block;
  height: 1px;
  margin: 0 0 64px;
  background: linear-gradient(90deg, var(--gradient-line), transparent 62%);
  opacity: 0.5;
}

.page-faq .faq-zone__head {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 14px;
  align-items: start;
  margin: 0 0 28px;
}

.page-faq .faq-zone__num {
  position: relative;
  padding-left: 16px;
  font-family: var(--font-data);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--text-light);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.page-faq .faq-zone__num::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent-green), var(--accent-blue));
  transform: skewX(-14deg);
}

.page-faq .faq-zone__heading h2 {
  margin: 2px 0 8px;
  font-family: var(--font-head);
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.page-faq .faq-zone__heading p {
  margin: 0;
  color: var(--text-muted);
  font-size: 15px;
}

/* ===== FAQ 条目 ===== */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-item {
  background: var(--bg-card);
  border: 1px solid rgba(242, 245, 255, 0.07);
  border-radius: 20px;
  transition: border-color 0.28s, box-shadow 0.28s;
}

.page-faq .faq-item[open] {
  border-color: rgba(198, 255, 58, 0.4);
  box-shadow:
    0 18px 48px rgba(0, 0, 0, 0.32),
    0 0 0 1px rgba(198, 255, 58, 0.06);
}

.page-faq .faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 20px;
  cursor: pointer;
}

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

.page-faq .faq-item summary::after {
  content: "";
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-right: 2px solid var(--accent-blue);
  border-bottom: 2px solid var(--accent-blue);
  transform: rotate(-45deg);
  transition: transform 0.28s;
  margin-right: 4px;
}

.page-faq .faq-item[open] summary::after {
  transform: rotate(45deg);
}

.page-faq .faq-item__mark {
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--accent-green);
  opacity: 0.55;
  transition: opacity 0.2s, box-shadow 0.2s;
}

.page-faq .faq-item[open] .faq-item__mark {
  opacity: 1;
  box-shadow: 0 0 0 4px var(--faq-green-soft);
}

.page-faq .faq-item__q {
  flex: 1;
  font-family: var(--font-head);
  font-size: 17px;
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.page-faq .faq-item__tag {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--faq-green-soft);
  color: var(--accent-green);
  font-size: 12px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.page-faq .faq-item__body {
  padding: 0 22px 22px;
  margin-top: 14px;
  border-top: 1px dashed rgba(242, 245, 255, 0.1);
  animation: faqBodyIn 0.32s ease both;
}

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

.page-faq .faq-item__body p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.75;
  margin: 14px 0;
}

.page-faq .faq-item__more {
  display: inline-block;
  margin-top: 4px;
  color: var(--accent-blue);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}

.page-faq .faq-item__more:hover {
  border-color: currentColor;
  color: var(--text-light);
}

/* 变更版块的琥珀色强调 */
.page-faq .faq-zone--change .faq-item__tag {
  background: var(--faq-amber-soft);
  color: var(--accent-amber);
}

.page-faq .faq-zone--change .faq-item__mark {
  background: var(--accent-amber);
}

.page-faq .faq-zone--change .faq-item[open] {
  border-color: rgba(255, 179, 0, 0.42);
  box-shadow:
    0 18px 48px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(255, 179, 0, 0.08);
}

.page-faq .faq-zone--change .faq-item[open] .faq-item__mark {
  box-shadow: 0 0 0 4px var(--faq-amber-soft);
}

/* ===== 图片 ===== */
.page-faq .faq-media {
  margin: 30px 0 8px;
}

.page-faq .faq-media img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 20px;
  background: var(--bg-card);
  border: 1px solid rgba(242, 245, 255, 0.08);
}

.page-faq .faq-media figcaption {
  margin-top: 10px;
  padding-left: 14px;
  border-left: 2px solid var(--accent-green);
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.5;
}

/* ===== 底部联系 ===== */
.page-faq .faq-contact {
  margin-top: 32px;
  padding: 64px 0 76px;
  border-top: 1px solid rgba(242, 245, 255, 0.08);
  background:
    linear-gradient(120deg, var(--faq-blue-soft), transparent 42%),
    linear-gradient(300deg, var(--faq-green-soft), transparent 48%),
    var(--bg-trench);
}

.page-faq .faq-contact__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--faq-gutter);
  display: grid;
  gap: 28px;
  justify-items: start;
}

.page-faq .faq-contact__main h2 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.2;
}

.page-faq .faq-contact__main p {
  max-width: 620px;
  margin: 0;
  color: var(--text-muted);
  font-size: 16px;
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===== 桌面端 ===== */
@media (min-width: 1024px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 56px;
    align-items: center;
  }

  .page-faq .faq-main__inner {
    grid-template-columns: 264px minmax(0, 1fr);
    gap: 64px;
    padding-top: 88px;
    padding-bottom: 128px;
  }

  .page-faq .faq-toc {
    top: calc(var(--header-h) + 24px);
    margin-bottom: 0;
  }

  .page-faq .faq-toc__box {
    border-radius: var(--radius-card);
    padding: 26px 22px;
    background: linear-gradient(180deg, rgba(22, 24, 34, 0.92), rgba(26, 34, 51, 0.78));
  }

  .page-faq .faq-toc__title {
    margin: 0 0 20px;
  }

  .page-faq .faq-toc__list {
    display: block;
    overflow: visible;
    margin-bottom: 20px;
    padding: 0;
  }

  .page-faq .faq-toc__list li + li {
    border-top: 1px dashed rgba(242, 245, 255, 0.08);
  }

  .page-faq .faq-toc__list a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 10px;
    background: transparent;
    border-radius: 0;
    white-space: normal;
    font-size: 15px;
    border-left: 3px solid transparent;
    transition: border-color 0.24s, color 0.24s, padding-left 0.24s;
  }

  .page-faq .faq-toc__list a:hover {
    background: transparent;
    border-left-color: var(--accent-green);
    padding-left: 16px;
    color: var(--accent-green);
  }

  .page-faq .faq-toc__num {
    display: inline-block;
    font-family: var(--font-data);
    font-size: 14px;
    color: var(--accent-green);
    font-variant-numeric: tabular-nums;
  }

  .page-faq .faq-toc__foot {
    display: block;
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px dashed rgba(242, 245, 255, 0.1);
  }

  .page-faq .faq-toc__foot a {
    display: block;
    padding: 6px 0;
    color: var(--accent-blue);
    text-decoration: none;
    font-size: 14px;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
  }

  .page-faq .faq-toc__foot a:hover {
    border-color: currentColor;
  }

  .page-faq .faq-zone__head {
    grid-template-columns: 72px 1fr;
    margin-bottom: 32px;
  }

  .page-faq .faq-zone__num {
    font-size: 52px;
  }

  .page-faq .faq-item summary {
    padding: 22px 24px;
  }

  .page-faq .faq-item__q {
    font-size: 20px;
  }

  .page-faq .faq-item__body {
    padding: 0 24px 24px;
  }

  .page-faq .faq-contact__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    justify-items: start;
  }
}

/* ===== 中屏微调 ===== */
@media (min-width: 640px) and (max-width: 1023px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1fr) 300px;
  }

  .page-faq .faq-hero__stat {
    flex: 1 1 100%;
  }
}

/* ===== 减少动画偏好 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}