:root {
  --primary: #4150f5;
  --secondary: #6c757d;
  --success: #00c9a7;
  --info: #19b5fe;
  --warning: #ffc107;
  --danger: #ff3f62;
  --light: #f1f5fa;
  --dark: #212529;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #1e293b;
  line-height: 1.7;
  scroll-behavior: smooth;
}
.bg-gradient2 {
  background: linear-gradient(135deg, #eef2ff 0%, #f0f9ff 50%, #fdf4ff 100%);
}
.bg-gradient3 {
  background: linear-gradient(180deg, #f8faff 0%, #ffffff 100%);
}
.hero-13 {
  padding-top: 80px;
  padding-bottom: 80px;
}
.hero-title {
  font-size: calc(1.625rem + 1.5vw);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
}
.highlight {
  padding: 0.25rem 0.75rem;
  border-radius: 8px;
  color: #fff !important;
}
.highlight-success {
  background: linear-gradient(90deg, #00c9a7 0%, #00e1b6 100%);
}
.typist-cursor {
  animation: blink 1s infinite;
  font-weight: 300;
  margin-left: 2px;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}
.fs-18 { font-size: 18px; }
.badge-soft-primary {
  background: rgba(65, 80, 245, 0.1);
  color: var(--primary);
  font-weight: 500;
}
.badge-soft-info {
  background: rgba(25, 181, 254, 0.1);
  color: var(--info);
  font-weight: 500;
}
.display-5 {
  font-size: calc(1.425rem + 2.1vw);
  font-weight: 700;
  line-height: 1.25;
}
.display-3 {
  font-size: calc(1.525rem + 3.3vw);
  font-weight: 700;
  background: linear-gradient(90deg, #4150f5 0%, #7928ca 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.display-4 {
  font-size: calc(1.475rem + 2.7vw);
  font-weight: 700;
}
.card {
  border: none;
  border-radius: 12px;
  transition: all 0.3s ease;
  height: 100%;
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(65, 80, 245, 0.12) !important;
}
.icon-with-bg {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  flex-shrink: 0;
}
.bg-soft-primary {
  background: rgba(65, 80, 245, 0.1);
  color: var(--primary);
}
.bg-soft-success {
  background: rgba(0, 201, 167, 0.1);
  color: var(--success);
}
.bg-soft-warning {
  background: rgba(255, 193, 7, 0.1);
  color: var(--warning);
}
.bg-soft-danger {
  background: rgba(255, 63, 98, 0.1);
  color: var(--danger);
}
.bg-soft-info {
  background: rgba(25, 181, 254, 0.1);
  color: var(--info);
}
.text-primary { color: var(--primary) !important; }
.btn {
  padding: 12px 28px;
  border-radius: 10px;
  font-weight: 500;
  transition: all 0.3s ease;
}
.btn-primary {
  background: linear-gradient(90deg, #4150f5 0%, #6366f1 100%);
  border: none;
}
.btn-primary:hover {
  background: linear-gradient(90deg, #3341d1 0%, #4f46e5 100%);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(65, 80, 245, 0.2);
}
.btn-secondary {
  background: linear-gradient(90deg, #64748b 0%, #475569 100%);
  border: none;
  color: white;
}
.btn-secondary:hover {
  background: linear-gradient(90deg, #475569 0%, #334155 100%);
  color: white;
  transform: translateY(-2px);
}
.btn-danger {
  background: linear-gradient(90deg, #ff3f62 0%, #f43f5e 100%);
  border: none;
}
.btn-danger:hover {
  background: linear-gradient(90deg, #e63354 0%, #e11d48 100%);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(255, 63, 98, 0.2);
}
.img-container img {
  border-radius: 16px;
  box-shadow: 0 25px 50px rgba(65, 80, 245, 0.15);
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}
.avatar-sm {
  width: 48px;
  height: 48px;
}
.icon-xxs {
  width: 16px;
  height: 16px;
}
hr {
  margin: 80px 0;
  opacity: 0.1;
}
#btn-back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
  box-shadow: 0 10px 25px rgba(65, 80, 245, 0.2);
}
.show { display: flex !important; }
.navbar {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
  padding: 15px 0;
}
.navbar-brand {
  font-weight: 700;
  font-size: 22px;
  background: linear-gradient(90deg, #4150f5 0%, #7928ca 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-link {
  font-weight: 500;
  color: #334155 !important;
  padding: 8px 16px !important;
  border-radius: 8px;
  transition: all 0.3s ease;
}
.nav-link:hover {
  color: var(--primary) !important;
  background: rgba(65, 80, 245, 0.08);
}
.feature-card p {
  color: #64748b;
  margin-top: 8px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 1.6;
}
.game-feature {
  margin-bottom: 20px;
}
.game-feature p {
  margin: 0;
  color: #64748b;
  line-height: 1.7;
}
.page-footer {
  background: #0f172a;
  padding: 60px 0 30px;
  color: #cbd5e1;
}
.footer-title {
  color: white;
  font-weight: 600;
  margin-bottom: 20px;
}
.footer-link {
  color: #94a3b8;
  display: block;
  margin-bottom: 12px;
  text-decoration: none;
  transition: all 0.3s ease;
}
.footer-link:hover {
  color: white;
  padding-left: 5px;
}
.copyright {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 30px;
  margin-top: 50px;
  text-align: center;
  color: #64748b;
  font-size: 14px;
}
section {
  scroll-margin-top: 80px;
}
@media (max-width: 768px) {
  .hero-13 {
    padding-top: 120px;
    text-align: center;
  }
  .hero-right {
    margin-top: 40px;
  }
  hr {
    margin: 50px 0;
  }
}