* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: #f8f9fb;
  color: #0f172a;
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  overflow-x: hidden;
}
.mono { font-family: "SF Mono", "Consolas", "Menlo", monospace; }

.hero-wrap {
  background: linear-gradient(160deg, #0c0f2e 0%, #1a1040 45%, #0c0f2e 100%);
  position: relative;
  overflow: hidden;
}
.hero-wrap::before {
  content: '';
  position: absolute;
  width: 680px;
  height: 680px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124,58,237,0.18) 0%, transparent 70%);
  top: -220px;
  right: -180px;
  pointer-events: none;
}
.hero-wrap::after {
  content: '';
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(244,63,94,0.14) 0%, transparent 70%);
  bottom: -120px;
  left: -100px;
  pointer-events: none;
}
.hero-wrap.hero-refund::before {
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(244,63,94,0.16) 0%, transparent 70%);
  top: -140px;
  right: -100px;
}
.hero-wrap.hero-refund::after {
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(124,58,237,0.13) 0%, transparent 70%);
  bottom: -90px;
  left: -70px;
}
.hero-wrap.hero-guide::before {
  width: 580px;
  height: 580px;
  top: -180px;
  right: -120px;
}
.hero-wrap.hero-guide::after {
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(244,63,94,0.12) 0%, transparent 70%);
  bottom: -100px;
  left: -80px;
}

.nav-glass {
  background: rgba(12,15,46,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.10);
}

.btn-fill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 26px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.938rem;
  transition: all 0.2s ease;
  text-decoration: none;
  border: none;
  cursor: pointer;
}
.btn-fill:hover { transform: translateY(-2px); }
.btn-fill.primary { background: #7c3aed; color: #fff; }
.btn-fill.primary:hover { background: #6d28d9; box-shadow: 0 8px 24px rgba(124,58,237,0.32); }
.btn-fill.accent { background: #f43f5e; color: #fff; }
.btn-fill.accent:hover { background: #e11d48; box-shadow: 0 8px 24px rgba(244,63,94,0.30); }
.btn-fill.ghost {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.22);
}
.btn-fill.ghost:hover { border-color: rgba(255,255,255,0.50); background: rgba(255,255,255,0.06); }
.btn-fill.dark { background: #0f172a; color: #fff; }
.btn-fill.dark:hover { background: #1e293b; box-shadow: 0 8px 24px rgba(15,23,42,0.28); }
.btn-fill.gold { background: #f59e0b; color: #0f172a; }
.btn-fill.gold:hover { background: #fbbf24; box-shadow: 0 8px 24px rgba(245,158,11,0.28); }

.feature-card {
  background: #fff;
  border-radius: 12px;
  padding: 32px 28px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
  border: 1px solid #eef0f5;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(124,58,237,0.10), 0 2px 8px rgba(0,0,0,0.04);
  border-color: rgba(124,58,237,0.18);
}
.feature-card .fc-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 18px;
}

.route-card {
  background: #fff;
  border-radius: 12px;
  padding: 30px 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
  border: 1px solid #eef0f5;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.route-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.08);
}
.route-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.platform-card {
  background: #fff;
  border-radius: 12px;
  padding: 30px 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
  border: 1px solid #eef0f5;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.platform-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.08);
}
.platform-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.step-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 20px;
  padding: 28px 0;
  border-top: 1px solid #eef0f5;
}
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.panel {
  background: #fff;
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
  border: 1px solid #eef0f5;
}
.field {
  width: 100%;
  border: 1.5px solid #eef0f5;
  border-radius: 8px;
  background: #f8f9fb;
  padding: 14px 16px;
  font: 600 14px "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  color: #0f172a;
  outline: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}
.field:focus {
  border-color: #7c3aed;
  box-shadow: 0 0 0 4px rgba(124,58,237,0.10);
}
.label {
  display: block;
  margin-bottom: 7px;
  font-size: 13px;
  font-weight: 700;
  color: #64748b;
}
#success-modal {
  display: none;
  background: rgba(12,15,46,0.78);
  backdrop-filter: blur(12px);
}

@media (max-width: 640px) {
  .feature-card { padding: 24px 20px; }
  .route-card { padding: 24px 16px; }
  .platform-card { padding: 24px 16px; }
  .step-row { grid-template-columns: 1fr; }
}