/* 首页专属样式 */
.hero {
  text-align: center;
  padding: 60px 20px 50px;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(212,168,67,0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.hero > * { position: relative; z-index: 1; }
.hero h1 {
  font-size: 46px;
  background: linear-gradient(90deg, #a87d20, #d4a843, #b88a2b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 16px;
  text-shadow: 0 2px 10px rgba(168,125,32,0.3);
  filter: drop-shadow(0 1px 0 rgba(255,255,255,0.6)) drop-shadow(0 2px 4px rgba(168,125,32,0.15));
  margin-bottom: 14px;
}
.hero .tagline {
  color: #9a8e7b;
  font-size: 15px;
  letter-spacing: 6px;
  margin-bottom: 8px;
}
.hero .desc {
  color: #6a6a8a;
  font-size: 13px;
  letter-spacing: 2px;
  max-width: 600px;
  margin: 14px auto 0;
  line-height: 1.9;
}

.feature-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 50px;
}
.section-header {
  text-align: center;
  margin-bottom: 32px;
}
.section-header h2 {
  font-size: 22px;
  color: #d4a843;
  letter-spacing: 8px;
  margin-bottom: 8px;
}
.section-header .sub {
  color: #6a6a8a;
  font-size: 12px;
  letter-spacing: 3px;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.feature-card {
  background: linear-gradient(180deg, rgba(30,30,60,0.7) 0%, rgba(20,20,45,0.5) 100%);
  border: 1px solid #3a3a5c;
  border-radius: 14px;
  padding: 28px 24px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 220px;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--card-accent, #d4a843), transparent);
  opacity: 0.6;
}
.feature-card.available {
  cursor: pointer;
}
.feature-card.available:hover {
  border-color: #d4a843;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.4), 0 0 20px rgba(212,168,67,0.15);
}
.feature-card.coming {
  opacity: 0.55;
}
.feature-card .card-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(212,168,67,0.15), rgba(212,168,67,0.05));
  border: 1px solid rgba(212,168,67,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #d4a843;
  margin-bottom: 16px;
  font-weight: bold;
  letter-spacing: 0;
}
.feature-card .card-title {
  font-size: 18px;
  color: #f0d68a;
  letter-spacing: 4px;
  margin-bottom: 10px;
  font-weight: bold;
}
.feature-card .card-desc {
  color: #9a8e7b;
  font-size: 13px;
  line-height: 1.8;
  letter-spacing: 0.5px;
  flex: 1;
}
.feature-card .card-cta {
  margin-top: 16px;
  font-size: 13px;
  color: #d4a843;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.feature-card.available .card-cta::after {
  content: '→';
  transition: transform 0.3s;
}
.feature-card.available:hover .card-cta::after {
  transform: translateX(4px);
}
.feature-card.coming .card-cta {
  color: #5a5a7c;
}
.feature-card .coming-tag {
  position: absolute;
  top: 14px; right: 14px;
  font-size: 10px;
  color: #6a6a8a;
  background: rgba(90,90,124,0.25);
  padding: 2px 8px;
  border-radius: 10px;
  letter-spacing: 1px;
}

.intro-section {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px 20px 60px;
}
.intro-block {
  background: rgba(20,20,45,0.5);
  border: 1px solid #3a3a5c;
  border-radius: 12px;
  padding: 32px;
  text-align: center;
}
.intro-block h3 {
  color: #d4a843;
  font-size: 18px;
  letter-spacing: 4px;
  margin-bottom: 14px;
}
.intro-block p {
  color: #9a8e7b;
  font-size: 14px;
  line-height: 2;
  letter-spacing: 1px;
}
.intro-block .quote {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed rgba(90,90,124,0.3);
  color: #6a6a8a;
  font-size: 13px;
  letter-spacing: 3px;
  font-style: italic;
}

@media (max-width: 768px) {
  .hero { padding: 40px 16px 30px; }
  .hero h1 { font-size: 30px; letter-spacing: 8px; }
  .hero .tagline { font-size: 13px; letter-spacing: 4px; }
  .feature-grid { grid-template-columns: 1fr; }
  .intro-block { padding: 22px; }
}

/* ===== 明亮主题覆盖 ===== */
[data-theme="light"] .hero .desc,
[data-theme="light"] .hero .tagline,
[data-theme="light"] .intro-block .quote { color: #524738; }
[data-theme="light"] .feature-card .card-title { color: #6a5008; }
[data-theme="light"] .feature-card .card-desc { color: #524738; }
[data-theme="light"] .feature-card .coming-tag { background: rgba(160,140,100,0.25); color: #6b6048; }
[data-theme="light"] .feature-card.coming { opacity: 0.7; }
[data-theme="light"] .feature-card.available:hover {
  box-shadow: 0 6px 20px rgba(140,120,80,0.2), 0 0 15px rgba(138,104,16,0.12);
}
[data-theme="light"] .section-header .sub { color: #6b6048; }