:root {
  --bg: #f4f7fb;
  --white: #ffffff;
  --text: #0d1b2a;
  --muted: #415a77;
  --primary: #0a4fbf;
  --primary-dark: #083a8f;
  --border: #dbe5f3;
  --shadow: 0 10px 30px rgba(11, 47, 104, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', 'Noto Sans TC', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.6;
}

.container {
  width: min(1160px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(244, 247, 251, 0.9);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 0;
}

.brand {
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 1rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.section {
  padding: 4.5rem 0;
}

.alt-bg {
  background: #eef3fb;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.15;
  margin: 0.4rem 0 1.1rem;
}

.eyebrow {
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.lead {
  color: var(--muted);
  max-width: 780px;
}

.hero-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1.45fr 1fr;
  align-items: stretch;
}

.hero-panel {
  background: linear-gradient(180deg, #0f264d 0%, #0a1a37 100%);
  color: var(--white);
  border-radius: 16px;
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.hero-panel ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero-panel li {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0.6rem 0;
  font-size: 0.95rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.2rem;
}

.btn {
  border-radius: 10px;
  padding: 0.7rem 1.05rem;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  background: var(--white);
  border-color: var(--primary);
  color: var(--primary);
}

.btn-ghost {
  background: transparent;
  border-color: var(--muted);
  color: var(--text);
}

.grid {
  display: grid;
  gap: 1rem;
}

.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.three-col {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.four-col {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.1rem;
  box-shadow: var(--shadow);
}

.route-card pre,
#schema pre {
  background: #0e1b32;
  color: #d9e4ff;
  border-radius: 10px;
  overflow: auto;
  padding: 0.8rem;
  font-size: 0.84rem;
}

.workflow,
.route-flow {
  margin-top: 0.8rem;
  padding: 0.7rem;
  border-radius: 10px;
  background: #eaf2ff;
  color: #113165;
  font-weight: 600;
}

.muted {
  color: var(--muted);
}

.cta-card,
.founder-card {
  background: var(--white);
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 2rem;
}

.feature {
  text-align: center;
  font-weight: 600;
}


.roadmap-cta {
  margin-top: 1rem;
  color: var(--muted);
}

#open-commercial ul {
  margin: 0.5rem 0 0;
  padding-left: 1.1rem;
}

#open-commercial li {
  margin-bottom: 0.35rem;
}

.site-footer {
  background: #0b1f3f;
  color: #d2e0ff;
  padding: 2rem 0;
}

.footer-wrap {
  display: grid;
  gap: 0.35rem;
}

@media (max-width: 1024px) {
  .four-col {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-grid,
  .three-col {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 760px) {
  .nav-wrap {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  .section {
    padding: 3.4rem 0;
  }

  .two-col,
  .four-col,
  .roadmap-grid {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}



.showcase-grid .card p {
  margin-top: 0.8rem;
}


.command-block {
  background: #0e1b32;
  color: #d9e4ff;
  border-radius: 10px;
  padding: 0.8rem;
  overflow-x: auto;
  white-space: pre;
  font-size: 0.82rem;
}