:root {
  --primary: #185FA5;
  --primary-light: #E6F1FB;
  --primary-dark: #0C447C;
  --accent: #EF9F27;
  --accent-light: #FAEEDA;
  --text-primary: #1a1a1a;
  --text-secondary: #5a5a5a;
  --text-muted: #888;
  --bg-page: #f5f7fa;
  --bg-card: #ffffff;
  --border: #e0e3e8;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 32px rgba(0,0,0,0.1);
  --radius: 12px;
  --radius-lg: 16px;
  --max-width: 1200px;
  --transition: all 0.25s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-dark);
}

/* ===== Navigation ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 28px;
  background: var(--primary);
  border-radius: 6px;
}

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--primary-light);
  color: var(--primary);
}

/* ===== Hero Section ===== */
.hero {
  background: linear-gradient(135deg, #0c2847 0%, #185FA5 50%, #0c447c 100%);
  color: #fff;
  padding: 80px 24px 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: 42px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.hero-content .subtitle {
  font-size: 18px;
  opacity: 0.85;
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(239,159,39,0.35);
}

.btn-primary:hover {
  background: #d98a1a;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(239,159,39,0.45);
}

.btn-secondary {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.2);
  color: #fff;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,0.3));
  border-radius: 8px;
}

/* ===== Quick Entry Cards ===== */
.quick-entry {
  padding: 60px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 10px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 16px;
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.entry-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}

.entry-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-light);
}

.entry-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.entry-card:nth-child(1) .entry-icon { background: var(--primary-light); }
.entry-card:nth-child(2) .entry-icon { background: var(--accent-light); }
.entry-card:nth-child(3) .entry-icon { background: #E1F5EE; }

.entry-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.entry-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 16px;
}

.entry-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 600;
}

/* ===== Highlights ===== */
.highlights {
  padding: 60px 24px;
  background: #fff;
}

.highlights-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.highlight-card {
  background: var(--bg-page);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
  border: 1px solid transparent;
}

.highlight-card:hover {
  border-color: var(--primary-light);
  background: #fff;
  box-shadow: var(--shadow);
}

.highlight-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 16px;
  background: var(--border);
}

.highlight-card h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}

.highlight-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ===== Scene Workflow Preview ===== */
.scene-preview {
  padding: 60px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.scene-tag {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 16px;
  text-align: center;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
}

.scene-tag:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary-dark);
}

/* ===== Footer ===== */
.footer {
  background: #0c2847;
  color: rgba(255,255,255,0.7);
  padding: 40px 24px 30px;
  margin-top: 40px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
}

.footer-links a:hover {
  color: #fff;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-content h1 {
    font-size: 32px;
  }
  .hero-badges {
    justify-content: center;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-image {
    order: -1;
  }
  .entry-grid {
    grid-template-columns: 1fr;
  }
  .highlight-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .scene-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
  }
  .hero-content h1 {
    font-size: 28px;
  }
  .highlight-grid {
    grid-template-columns: 1fr;
  }
  .scene-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}