:root {
  --ink: #0c0e12;
  --ink-2: #12151c;
  --ink-3: #191d26;
  --steel: #2a3140;
  --silver: #c8ccd6;
  --silver-bright: #eceef2;
  --silver-dim: #8b91a0;
  --accent: #9db4d4;
  --line: rgba(200, 204, 214, 0.14);
  font-size: 16px;
}

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

body {
  background: var(--ink);
  color: var(--silver);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
code { font-family: Consolas, "SF Mono", monospace; background: var(--ink-3); padding: 0.1em 0.35em; border-radius: 4px; font-size: 0.92em; }

.sigil {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(145deg, #3a4255, #1c212d);
  border: 1px solid var(--line);
  color: var(--silver-bright); font-weight: 700; font-size: 18px;
}
.sigil.small { width: 24px; height: 24px; font-size: 13px; border-radius: 6px; }

.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px clamp(20px, 6vw, 72px);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; background: rgba(12, 14, 18, 0.92); backdrop-filter: blur(8px); z-index: 10;
}
.nav-brand { display: flex; align-items: center; gap: 12px; font-weight: 700; color: var(--silver-bright); letter-spacing: 0.02em; }
.nav-links { display: flex; align-items: center; gap: clamp(14px, 3vw, 30px); font-size: 0.95rem; }
.nav-links a { color: var(--silver-dim); }
.nav-links a:hover { color: var(--silver-bright); }
.nav-cta {
  color: var(--ink) !important; background: var(--silver-bright);
  padding: 8px 16px; border-radius: 8px; font-weight: 600;
}

.hero { text-align: center; padding: clamp(70px, 12vh, 130px) 20px 60px; max-width: 880px; margin: 0 auto; }
.hallmark-row { display: flex; justify-content: center; gap: 10px; margin-bottom: 34px; }
.hallmark {
  border: 1px solid var(--line); border-radius: 4px; padding: 4px 12px;
  font-size: 0.68rem; letter-spacing: 0.22em; color: var(--silver-dim);
  background: var(--ink-2);
}
.hero h1 {
  font-size: clamp(2.2rem, 5.5vw, 3.6rem); line-height: 1.12; font-weight: 700;
  color: var(--silver-bright); letter-spacing: -0.01em;
  background: linear-gradient(180deg, #f4f5f8, #a9afc0);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.lede { margin: 26px auto 0; max-width: 680px; font-size: 1.12rem; color: var(--silver-dim); }
.lede strong { color: var(--silver-bright); }
.hero-actions { display: flex; gap: 14px; justify-content: center; margin-top: 38px; flex-wrap: wrap; }
.hero-note { margin-top: 22px; font-size: 0.85rem; color: var(--silver-dim); letter-spacing: 0.03em; }

.button {
  display: inline-block; padding: 12px 26px; border-radius: 10px; font-weight: 600;
  border: 1px solid transparent; transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.button:hover { transform: translateY(-1px); }
.button.primary { background: linear-gradient(145deg, #e7e9ee, #b9bfcd); color: var(--ink); box-shadow: 0 4px 24px rgba(200, 204, 214, 0.15); }
.button.ghost { border-color: var(--line); color: var(--silver); background: transparent; }
.button.ghost:hover { border-color: var(--silver-dim); }
.button.large { padding: 16px 34px; font-size: 1.05rem; white-space: nowrap; }

.section { padding: clamp(60px, 10vh, 100px) clamp(20px, 6vw, 72px); max-width: 1160px; margin: 0 auto; }
.section.alt { background: var(--ink-2); max-width: none; }
.section.alt > * { max-width: 1160px; margin-left: auto; margin-right: auto; }
.section h2 { font-size: clamp(1.6rem, 3.4vw, 2.2rem); color: var(--silver-bright); margin-bottom: 14px; }
.section-lede { max-width: 760px; color: var(--silver-dim); margin-bottom: 44px; font-size: 1.04rem; }

.grid { display: grid; gap: 18px; }
.grid.four { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

.card {
  background: var(--ink-3); border: 1px solid var(--line); border-radius: 14px; padding: 26px;
}
.card h3 { color: var(--silver-bright); font-size: 1.06rem; margin-bottom: 10px; }
.card p { color: var(--silver-dim); font-size: 0.95rem; }
.card-stamp {
  width: 38px; height: 38px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); border-radius: 50%; margin-bottom: 18px;
  color: var(--accent); font-weight: 700; font-size: 0.9rem; letter-spacing: 0.05em;
  background: var(--ink-2);
}

.grid.two { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); max-width: 860px; }
.price-card { display: flex; flex-direction: column; gap: 16px; }
.price-card.featured { border-color: var(--accent); box-shadow: 0 0 34px rgba(157, 180, 212, 0.12); }
.price-tier { font-size: 0.78rem; letter-spacing: 0.2em; color: var(--accent); text-transform: uppercase; }
.price-amount { font-size: 2.2rem; font-weight: 700; color: var(--silver-bright); }
.price-amount span { font-size: 1rem; font-weight: 400; color: var(--silver-dim); }
.price-list { list-style: none; flex: 1; display: flex; flex-direction: column; gap: 9px; }
.price-list li { color: var(--silver-dim); font-size: 0.94rem; padding-left: 20px; position: relative; }
.price-list li::before { content: "◆"; position: absolute; left: 0; font-size: 0.6rem; top: 0.45em; color: var(--accent); }
.price-card .button { text-align: center; }

.demo-band {
  display: flex; align-items: center; justify-content: space-between; gap: 34px; flex-wrap: wrap;
  border: 1px solid var(--line); border-radius: 18px; padding: clamp(28px, 5vw, 48px);
  background: linear-gradient(145deg, #161a23, #0e1117);
}
.demo-band h2 { margin-bottom: 10px; }
.demo-band p { color: var(--silver-dim); max-width: 620px; }

.download-card {
  display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap;
  background: var(--ink-3); border: 1px solid var(--line); border-radius: 16px; padding: 30px;
}
.download-main h3 { color: var(--silver-bright); font-family: Consolas, monospace; font-size: 1.05rem; }
.download-meta { color: var(--silver-dim); font-size: 0.92rem; margin-top: 6px; }
.download-hash {
  margin-top: 14px; font-family: Consolas, monospace; font-size: 0.78rem; color: var(--silver-dim);
  word-break: break-all; max-width: 560px;
}
.download-hash span {
  display: inline-block; border: 1px solid var(--line); border-radius: 4px; padding: 1px 8px;
  margin-right: 8px; font-size: 0.68rem; letter-spacing: 0.15em; color: var(--accent);
}
.download-actions { display: flex; flex-direction: column; gap: 10px; min-width: 200px; }
.download-actions .button { text-align: center; }
.fine-print { margin-top: 22px; font-size: 0.84rem; color: var(--silver-dim); max-width: 720px; }

.footer {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 30px clamp(20px, 6vw, 72px); border-top: 1px solid var(--line);
  color: var(--silver-dim); font-size: 0.9rem;
}
.footer > div:first-child { display: flex; align-items: center; gap: 10px; }
.footer-links { display: flex; gap: 22px; }
.footer-links a { color: var(--silver-dim); }
.footer-links a:hover { color: var(--silver-bright); }

@media (max-width: 640px) {
  .nav-links a:not(.nav-cta) { display: none; }
  .hallmark-row { flex-wrap: wrap; }
}