:root {
  --primary: #C8102E;
  --accent-gold: #D4AF37;
  --bg: #FAF5EF;
  --card-bg: #FFFFFF;
  --text: #2C3E50;
  --text-muted: #7F8C8D;
  --border: #E8E8E8;
  --gradient-brand: linear-gradient(135deg, #C8102E 0%, #D4AF37 100%);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
}

/* Oracle Trail Canvas */
.oracle-canvas {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
}

/* Parallax layers */
.parallax-layer { position: fixed; inset: 0; pointer-events: none; z-index: 0; }
.parallax-bg {
  background:
    radial-gradient(circle at 20% 80%, rgba(200,16,46,0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(212,175,55,0.03) 0%, transparent 50%);
  will-change: transform;
}
.parallax-mid {
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><text y="50" font-size="8" fill="rgba(200,16,46,0.03)">☁</text></svg>');
  background-size: 200px;
  will-change: transform;
}

/* Navbar */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 0 24px; height: 56px;
  display: flex; align-items: center;
  transition: background 0.3s ease, backdrop-filter 0.3s ease;
}
.navbar.scrolled {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  width: 100%; max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-brand {
  display: flex; align-items: center; gap: 8px;
  text-decoration: none; color: var(--text); font-weight: 700; font-size: 18px;
}
.brand-logo {
  width: 32px; height: 32px;
  background: var(--gradient-brand);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 16px; font-weight: 700;
}
.brand-text { letter-spacing: 2px; }
.nav-menu {
  display: flex; list-style: none; gap: 32px;
}
.nav-link {
  text-decoration: none; color: var(--text-muted);
  font-size: 14px; font-weight: 500;
  transition: color 0.2s;
}
.nav-link:hover, .nav-link.active { color: var(--primary); }
.nav-download-btn {
  background: var(--gradient-brand);
  color: white; text-decoration: none;
  padding: 8px 20px; border-radius: 4px;
  font-weight: 600; font-size: 14px;
  transition: all 0.2s;
}
.nav-download-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(200,16,46,0.3); }
.nav-hamburger { display: none; background: none; border: none; cursor: pointer; }
.nav-hamburger span {
  display: block; width: 20px; height: 2px; background: var(--text);
  margin: 4px 0; transition: 0.3s;
}

/* Sections */
.section { position: relative; z-index: 1; padding: 80px 24px; min-height: 100vh; }
.container { max-width: 1200px; margin: 0 auto; }

/* Hero */
.hero-section {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; min-height: 100vh; padding-top: 56px;
  background: linear-gradient(180deg, rgba(26,26,46,0.95) 0%, rgba(22,33,62,0.9) 100%);
  color: white;
}
.hero-bg-element { position: absolute; inset: 0; pointer-events: none; }
.mountains {
  bottom: 0; height: 30%;
  background: linear-gradient(0deg, rgba(200,16,46,0.1) 0%, transparent 100%);
  clip-path: polygon(0% 100%, 10% 60%, 20% 80%, 30% 40%, 40% 70%, 50% 30%, 60% 60%, 70% 20%, 80% 50%, 90% 30%, 100% 100%);
}
.clouds {
  background: repeating-linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.03) 50%, transparent 100%);
  animation: drift 30s linear infinite;
}
@keyframes drift { from { transform: translateX(-200px); } to { transform: translateX(200px); } }

.hero-title {
  font-size: 72px; font-weight: 900;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 12px;
  margin-bottom: 16px;
}
.hero-subtitle {
  font-size: 20px; color: rgba(255,255,255,0.7);
  letter-spacing: 4px; margin-bottom: 40px;
}
.hero-actions { display: flex; gap: 16px; }
.scroll-indicator {
  position: absolute; bottom: 32px;
  animation: float 2s ease-in-out infinite;
}
.scroll-indicator span {
  display: block; width: 24px; height: 24px;
  border-right: 2px solid rgba(255,255,255,0.5);
  border-bottom: 2px solid rgba(255,255,255,0.5);
  transform: rotate(45deg);
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(8px); } }

/* Buttons */
.btn {
  display: inline-block; padding: 12px 32px;
  border-radius: 4px; font-weight: 600;
  text-decoration: none; font-size: 16px;
  transition: all 0.2s; cursor: pointer; border: none;
}
.btn-primary {
  background: var(--gradient-brand);
  color: white;
  box-shadow: 0 2px 8px rgba(200,16,46,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(200,16,46,0.4); }
.btn-secondary {
  background: transparent;
  color: white;
  border: 1px solid rgba(255,255,255,0.3);
}
.btn-secondary:hover { border-color: var(--accent-gold); color: var(--accent-gold); }
.btn-large { padding: 16px 48px; font-size: 20px; }

/* Features */
.features-section { background: var(--bg); }
.section-bg { position: absolute; inset: 0; pointer-events: none; opacity: 0.08; }
.bronze-pattern {
  background-image: repeating-linear-gradient(45deg, var(--primary) 0, var(--primary) 1px, transparent 1px, transparent 20px);
}
.section-title {
  font-size: 32px; font-weight: 700; text-align: center;
  margin-bottom: 12px; color: var(--text);
}
.section-desc {
  font-size: 16px; color: var(--text-muted); text-align: center;
  max-width: 600px; margin: 0 auto 48px;
}
.value-cards {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.value-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s ease;
}
.value-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  border-color: var(--accent-gold);
}
.card-icon { font-size: 40px; margin-bottom: 16px; }
.value-card h3 { font-size: 18px; margin-bottom: 8px; color: var(--text); }
.value-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* Capabilities */
.capabilities-section { background: linear-gradient(180deg, var(--bg) 0%, #F5F0E8 100%); }
.ink-wash {
  background: radial-gradient(ellipse at center, rgba(44,62,80,0.05) 0%, transparent 70%);
}
.capability-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.cap-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  transition: all 0.3s ease;
}
.cap-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
.cap-preview { height: 160px; background: linear-gradient(135deg, #f5f5f5, #ebebeb); display: flex; align-items: center; justify-content: center; }
.preview-placeholder {
  font-size: 14px; color: var(--text-muted);
  padding: 8px 16px; background: white; border-radius: 4px;
  border: 1px solid var(--border);
}
.cap-card h3 { padding: 16px 16px 4px; font-size: 16px; }
.cap-card p { padding: 0 16px 16px; font-size: 13px; color: var(--text-muted); }

/* CTA */
.cta-section {
  background: linear-gradient(180deg, #F5F0E8 0%, var(--bg) 100%);
  text-align: center;
}
.water-wave {
  background: repeating-linear-gradient(0deg, transparent 0px, transparent 20px, rgba(200,16,46,0.02) 20px, rgba(200,16,46,0.02) 21px);
  animation: wave 8s ease-in-out infinite;
}
@keyframes wave { 0%,100% { transform: translateY(0); } 50% { transform: translateY(5px); } }
.cta-title { font-size: 36px; font-weight: 700; margin-bottom: 32px; color: var(--text); }

/* Footer */
.footer { background: #1A1A2E; color: rgba(255,255,255,0.6); padding: 32px 24px; text-align: center; }
.footer-divider {
  height: 1px; background: repeating-linear-gradient(90deg, rgba(212,175,55,0.3) 0px, rgba(212,175,55,0.3) 4px, transparent 4px, transparent 8px);
  margin-bottom: 24px;
}
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-icp { font-size: 12px; margin: 8px 0; }
.footer-nav { display: flex; justify-content: center; gap: 24px; margin-top: 12px; }
.footer-nav a { color: rgba(255,255,255,0.5); text-decoration: none; font-size: 13px; }
.footer-nav a:hover { color: var(--accent-gold); }

/* Animations */
.fade-in-up {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in-up.visible { opacity: 1; transform: translateY(0); }
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* Responsive */
@media (max-width: 900px) {
  .value-cards, .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-title { font-size: 48px; }
  .nav-menu { display: none; }
  .nav-hamburger { display: block; }
}
@media (max-width: 560px) {
  .value-cards, .capability-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 32px; letter-spacing: 6px; }
  .hero-actions { flex-direction: column; }
}