/* ========== 页面作用域：faq ========== */
.page-faq {
  --faq-hero-glow: rgba(138, 43, 226, 0.18);
  --faq-gold-line: rgba(255, 215, 0, 0.45);
  background: var(--deep-space-blue);
  color: var(--mineral-cream);
}

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

/* ========== Hero 首屏 ========== */
.page-faq .faq-hero {
  position: relative;
  padding: 36px 0 40px;
  background:
    linear-gradient(135deg, rgba(138, 43, 226, 0.12), rgba(10, 26, 47, 0.35)),
    rgba(42, 59, 76, 0.5);
  border-bottom: 1px solid var(--glass-stroke);
  overflow: hidden;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--electric-gold));
}
.page-faq .faq-hero-grid {
  display: grid;
  gap: 24px;
}
.page-faq .faq-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.page-faq .faq-breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}
.page-faq .faq-breadcrumb a:hover,
.page-faq .faq-breadcrumb a:focus-visible {
  color: var(--electric-gold);
  outline: none;
}
.page-faq .faq-breadcrumb .breadcrumb-sep {
  color: rgba(169, 184, 198, 0.45);
}
.page-faq .faq-hero .page-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--neon-purple);
  margin: 0 0 12px;
}
.page-faq .faq-hero .page-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 5.2vw, 52px);
  font-weight: 300;
  line-height: 1.12;
  margin: 0 0 16px;
  color: var(--mineral-cream);
}
.page-faq .faq-hero .page-intro {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-muted);
  margin: 0;
}
.page-faq .faq-hero .page-intro a {
  color: var(--electric-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 215, 0, 0.35);
}
.page-faq .faq-hero-art {
  position: relative;
}
.page-faq .faq-hero-art img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--glass-stroke);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
}

/* ========== 主体布局 ========== */
.page-faq .faq-layout {
  padding: 44px 0 72px;
}
.page-faq .faq-layout-grid {
  display: grid;
  gap: 40px;
  align-items: start;
}

/* ========== 目录条 ========== */
.page-faq .faq-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
  padding: 16px 20px;
  margin-bottom: 40px;
  background: rgba(10, 26, 47, 0.4);
  border: 1px solid var(--glass-stroke);
  border-radius: 12px;
}
.page-faq .faq-toc-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mineral-terracotta);
}
.page-faq .faq-toc a {
  font-size: 14px;
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  color: var(--electric-gold);
  border-color: var(--faq-gold-line);
  outline: none;
}

/* ========== 版块 ========== */
.page-faq .faq-section {
  margin-bottom: 48px;
}
.page-faq .faq-section:last-of-type {
  margin-bottom: 0;
}
.page-faq .faq-section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid rgba(196, 126, 90, 0.35);
}
.page-faq .faq-section-index {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 500;
  line-height: 1;
  color: var(--neon-purple);
}
.page-faq .faq-section-title {
  font-family: var(--font-display);
  font-size: clamp(17px, 2.4vw, 22px);
  font-weight: 500;
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--mineral-cream);
}
.page-faq .faq-section-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-muted);
  margin: 0 0 20px;
}

/* ========== FAQ 列表 ========== */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.page-faq .faq-item {
  background: rgba(42, 59, 76, 0.42);
  border: 1px solid var(--glass-stroke);
  border-radius: 12px;
  overflow: hidden;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.page-faq .faq-item:hover {
  background: rgba(42, 59, 76, 0.68);
  border-color: rgba(255, 215, 0, 0.3);
}
.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-item summary::-webkit-details-marker,
.page-faq .faq-item summary::marker {
  display: none;
  content: "";
}
.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--neon-purple);
  outline-offset: -2px;
  border-radius: 12px;
}
.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.2;
  color: var(--text-muted);
  transition: color 0.2s ease, transform 0.2s ease;
}
.page-faq .faq-item details[open] summary::after {
  content: "−";
  color: var(--electric-gold);
}
.page-faq .faq-number {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--neon-purple);
  min-width: 32px;
  line-height: 1.5;
}
.page-faq .faq-question {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--mineral-cream);
  transition: color 0.2s ease;
}
.page-faq .faq-item:hover .faq-question {
  color: var(--electric-gold);
}
.page-faq .faq-item details[open] {
  border-color: var(--faq-gold-line);
  box-shadow: 0 12px 40px var(--faq-hero-glow);
}
.page-faq .faq-item details[open] .faq-question {
  color: var(--electric-gold);
}
.page-faq .faq-answer {
  padding: 0 20px 20px 66px;
  animation: page-faq-reveal 0.22s ease-out;
}
.page-faq .faq-answer p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(242, 233, 216, 0.78);
}
.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-answer .faq-email,
.page-faq .faq-answer .faq-link {
  color: var(--electric-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 215, 0, 0.35);
  transition: border-color 0.2s ease, color 0.2s ease;
}
.page-faq .faq-answer .faq-email:hover,
.page-faq .faq-answer .faq-link:hover {
  border-color: var(--electric-gold);
  color: var(--mineral-cream);
}
@keyframes page-faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== 导出提示块 ========== */
.page-faq .faq-export-block {
  display: grid;
  gap: 20px;
  margin-top: 24px;
  padding: 20px;
  background: rgba(92, 107, 77, 0.2);
  border: 1px solid rgba(92, 107, 77, 0.45);
  border-radius: 14px;
}
.page-faq .faq-export-copy {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(242, 233, 216, 0.8);
}
.page-faq .faq-export-copy p {
  margin: 0 0 10px;
}
.page-faq .faq-export-copy p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-export-copy strong {
  color: var(--mineral-cream);
}
.page-faq .faq-export-media img {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--glass-stroke);
}

/* ========== 信任说明 ========== */
.page-faq .faq-trust {
  margin-top: 40px;
  padding: 20px 24px;
  background: rgba(10, 26, 47, 0.55);
  border: 1px solid var(--glass-stroke);
  border-radius: 14px;
}
.page-faq .faq-trust p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
  margin: 0 0 8px;
}
.page-faq .faq-trust p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-trust-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 14px;
}
.page-faq .faq-trust-links a {
  color: var(--electric-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 215, 0, 0.35);
}
.page-faq .faq-trust-sep {
  color: rgba(169, 184, 198, 0.45);
}

/* ========== 侧边悬浮卡 ========== */
.page-faq .faq-aside {
  width: 100%;
}
.page-faq .faq-aside-card {
  background: rgba(42, 59, 76, 0.55);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-stroke);
  border-radius: 16px;
  padding: 26px 24px;
  box-shadow: 0 20px 52px rgba(0, 0, 0, 0.3);
}
.page-faq .faq-aside-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--electric-gold);
  background: rgba(255, 215, 0, 0.08);
  border: 1px solid rgba(255, 215, 0, 0.28);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.page-faq .faq-aside-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 500;
  margin: 0 0 12px;
  color: var(--mineral-cream);
}
.page-faq .faq-aside-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
  margin: 0 0 14px;
}
.page-faq .faq-aside-mail {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--electric-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 215, 0, 0.35);
  margin-bottom: 20px;
}
.page-faq .faq-aside-mail:hover {
  border-color: var(--electric-gold);
  color: var(--mineral-cream);
}
.page-faq .faq-aside-card .btn-gold {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}
.page-faq .faq-aside-note {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(169, 184, 198, 0.72);
  margin: 18px 0 0;
}

/* ========== 媒体查询 ≥900px ========== */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 64px 0 56px;
  }
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1fr) 420px;
    align-items: center;
    gap: 48px;
  }
  .page-faq .faq-layout {
    padding: 56px 0 88px;
  }
  .page-faq .faq-layout-grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 52px;
  }
  .page-faq .faq-aside {
    position: sticky;
    top: 130px;
  }
  .page-faq .faq-export-block {
    grid-template-columns: 1fr 0.85fr;
    align-items: center;
    gap: 28px;
    padding: 24px;
  }
}