:root {
  --bg: #f3f8ff;
  --bg-2: #eaf2ff;
  --surface: #ffffff;
  --surface-soft: #f7fbff;
  --text: #0b1220;
  --muted: #5b6880;
  --primary: #1e40af;
  --primary-2: #2563eb;
  --primary-3: #60a5fa;
  --line: #d7e6ff;
  --ok: #0ea5e9;
  --shadow-sm: 0 8px 24px rgba(30, 64, 175, 0.08);
  --shadow-lg: 0 22px 60px rgba(30, 64, 175, 0.14);
  --radius: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--text);
  background:
    radial-gradient(800px 400px at 8% -2%, rgba(96, 165, 250, 0.22), transparent 60%),
    radial-gradient(700px 360px at 95% 18%, rgba(37, 99, 235, 0.16), transparent 62%),
    linear-gradient(180deg, var(--bg), var(--bg-2));
}

.container { width: min(1140px, 92%); margin: 0 auto; }

.header {
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  position: sticky;
  top: 10px;
  z-index: 40;
  background: rgba(255,255,255,0.78);
  border: 1px solid rgba(255,255,255,0.85);
  backdrop-filter: blur(14px);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
}

.header.compact { position: relative; top: 0; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(145deg, var(--primary), var(--primary-2));
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.4);
}

.nav { display: flex; gap: 18px; }
.nav a {
  text-decoration: none;
  font-weight: 600;
  color: #1f3c88;
  font-size: 0.95rem;
  opacity: 0.88;
}
.nav a:hover { opacity: 1; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 16px;
  border-radius: 12px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  font-weight: 700;
  transition: .2s ease;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  color: #fff;
  background: linear-gradient(145deg, var(--primary), var(--primary-2));
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.28);
}

.btn-ghost {
  color: #1e3a8a;
  border-color: #bfdbfe;
  background: rgba(255,255,255,0.85);
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  align-items: stretch;
  padding: 26px 0 12px;
}

.hero-copy,
.hero-card,
.card,
.panel,
.security,
.cta,
.whitepaper {
  background: rgba(255,255,255,0.88);
  border: 1px solid #e4eeff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.hero-copy { padding: 30px; }

.eyebrow {
  color: var(--primary);
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: .08em;
  font-size: .78rem;
  margin: 0 0 10px;
}

h1 {
  margin: 0;
  font-size: clamp(2.1rem, 4.6vw, 3.7rem);
  line-height: 1.06;
  letter-spacing: -0.03em;
}

.subtext {
  color: var(--muted);
  font-size: 1.02rem;
  margin-top: 14px;
  line-height: 1.65;
}

.hero-actions { margin-top: 22px; display: flex; gap: 10px; flex-wrap: wrap; }

.metrics {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.metrics > div {
  background: var(--surface-soft);
  border: 1px solid #e2ebff;
  border-radius: 12px;
  padding: 12px;
}

.metrics h3 { margin: 0; color: var(--primary); letter-spacing: -0.02em; }
.metrics p { margin: 4px 0 0; color: var(--muted); font-size: .86rem; }

.hero-card { padding: 26px; background: linear-gradient(180deg, #ffffff, #f6faff); }
.hero-card h3 { margin-top: 0; }
.hero-card ul { margin: 8px 0 0; color: var(--muted); display: grid; gap: 10px; }

.section { padding: 24px 0 8px; }
h2 { margin: 0 0 14px; letter-spacing: -0.02em; }

.cards { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; }
.card { padding: 20px; }
.card h3 { margin-top: 0; }
.card p { margin: 10px 0 0; color: var(--muted); line-height: 1.62; }

.timeline { display: grid; gap: 10px; }
.step {
  padding: 14px;
  border-radius: 12px;
  border: 1px solid #deebff;
  background: rgba(255,255,255,.92);
  display: flex;
  align-items: center;
  gap: 10px;
  color: #1a2e58;
  font-weight: 500;
}
.step span {
  width: 26px; height: 26px; border-radius: 999px;
  display: grid; place-items: center;
  color: #fff; background: linear-gradient(145deg, var(--primary), var(--primary-2));
  font-weight: 700;
  font-size: .88rem;
}

.security, .cta, .whitepaper { padding: 22px; }
.security p, .whitepaper p, .whitepaper li, .whitepaper ol, .whitepaper ul, .muted { color: var(--muted); }

.cta {
  margin: 24px auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: linear-gradient(145deg, #ffffff, #f4f8ff);
}

.footer {
  margin: 26px auto 32px;
  padding: 18px 4px;
  border-top: 1px solid #dce8ff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.footer p { color: var(--muted); margin: 6px 0 0; }
.footer-links { display: flex; align-items: center; gap: 14px; }
.footer-links a { color: #1d4ed8; text-decoration: none; font-weight: 600; }

.dapp-grid {
  margin: 16px auto 26px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.panel { padding: 20px; }
.form, .chat-input { display: grid; gap: 10px; margin-top: 10px; }

label { display: grid; gap: 6px; font-size: .92rem; font-weight: 700; color: #1e3a8a; }
input, select {
  width: 100%;
  font: inherit;
  border-radius: 11px;
  border: 1px solid #c7dbff;
  background: #fff;
  padding: 11px 12px;
  outline: none;
}
input:focus, select:focus {
  border-color: var(--primary-3);
  box-shadow: 0 0 0 4px rgba(96,165,250,.18);
}

.chatbox {
  margin-top: 10px;
  min-height: 270px;
  max-height: 380px;
  overflow: auto;
  background: linear-gradient(180deg, #f8fbff, #f3f8ff);
  border: 1px solid #d9e7ff;
  border-radius: 13px;
  padding: 12px;
}
.msg {
  width: fit-content;
  max-width: 86%;
  border-radius: 12px;
  padding: 10px 12px;
  margin-bottom: 8px;
  font-size: .93rem;
  line-height: 1.45;
}
.msg.ai { background: #e4efff; color: #17316f; }
.msg.user {
  margin-left: auto;
  color: #fff;
  background: linear-gradient(145deg, var(--primary), var(--primary-2));
}

a { color: var(--primary-2); }

@media (max-width: 980px) {
  .hero, .cards, .dapp-grid { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: 1fr; }
  .nav { display: none; }
  .header { top: 0; border-radius: 0 0 14px 14px; }
  .cta, .footer { flex-direction: column; align-items: flex-start; }
}