:root {
  --bg: #0b0e14;
  --bg-raise: #12161f;
  --bg-card: #161b26;
  --border: #232a38;
  --text: #e8ecf4;
  --text-dim: #9aa4b5;
  --accent: #5eead4;
  --accent-2: #7dd3fc;
  --mono: "SF Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 980px; margin: 0 auto; padding: 0 24px; }

/* Nav */
nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 0;
}
nav .logo {
  font-family: var(--mono); font-weight: 700; font-size: 18px;
  color: var(--text); text-decoration: none; letter-spacing: -0.02em;
}
nav .logo span { color: var(--accent); }
nav .links a {
  color: var(--text-dim); text-decoration: none; font-size: 15px;
  margin-left: 22px;
}
nav .links a:hover { color: var(--text); }

/* Hero */
.hero { padding: 72px 0 56px; text-align: center; }
.hero .tag {
  font-family: var(--mono); font-size: 13px; color: var(--accent);
  border: 1px solid var(--border); border-radius: 999px;
  padding: 6px 14px; display: inline-block; margin-bottom: 28px;
  background: var(--bg-raise);
}
.hero h1 {
  font-size: clamp(34px, 6vw, 56px); line-height: 1.1;
  letter-spacing: -0.03em; font-weight: 800; margin-bottom: 20px;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p.lead {
  font-size: 20px; color: var(--text-dim); max-width: 640px;
  margin: 0 auto 36px;
}
.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block; text-decoration: none; font-weight: 600;
  font-size: 16px; border-radius: 12px; padding: 14px 26px;
  transition: transform .12s ease, opacity .12s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #04211b; }
.btn-ghost { border: 1px solid var(--border); color: var(--text); background: var(--bg-raise); }
.cta-note { font-size: 13px; color: var(--text-dim); margin-top: 14px; font-family: var(--mono); }

/* Terminal mock */
.term {
  margin: 56px auto 0; max-width: 760px; text-align: left;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px; overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,.45);
}
.term-bar {
  display: flex; gap: 7px; padding: 12px 14px;
  border-bottom: 1px solid var(--border); background: var(--bg-raise);
}
.term-bar i { width: 11px; height: 11px; border-radius: 50%; background: #2e3646; }
.term-body { padding: 20px 22px; font-family: var(--mono); font-size: 14px; line-height: 1.9; }
.term-body .p { color: var(--accent-2); }
.term-body .ok { color: var(--accent); }
.term-body .dim { color: var(--text-dim); }

/* Sections */
section { padding: 64px 0; }
section h2 {
  font-size: 30px; letter-spacing: -0.02em; margin-bottom: 10px;
}
section p.sub { color: var(--text-dim); margin-bottom: 36px; max-width: 620px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 18px; }
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px; padding: 24px;
}
.card .ic { font-size: 22px; margin-bottom: 12px; display: block; }
.card h3 { font-size: 17px; margin-bottom: 8px; }
.card p { font-size: 15px; color: var(--text-dim); }

/* Steps */
.steps { counter-reset: step; }
.step { display: flex; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--border); }
.step:last-child { border-bottom: none; }
.step .n {
  font-family: var(--mono); color: var(--accent); font-weight: 700;
  min-width: 28px; font-size: 15px; padding-top: 2px;
}
.step h3 { font-size: 17px; margin-bottom: 4px; }
.step p { font-size: 15px; color: var(--text-dim); }
.step code {
  font-family: var(--mono); font-size: 13px; background: var(--bg-raise);
  border: 1px solid var(--border); padding: 2px 7px; border-radius: 6px;
}

/* Prose pages (privacy/terms/support) */
.prose { max-width: 720px; margin: 0 auto; padding: 48px 0 80px; }
.prose h1 { font-size: 34px; letter-spacing: -0.02em; margin-bottom: 8px; }
.prose .updated { font-family: var(--mono); font-size: 13px; color: var(--text-dim); margin-bottom: 36px; }
.prose h2 { font-size: 21px; margin: 36px 0 12px; }
.prose h3 { font-size: 17px; margin: 24px 0 8px; }
.prose p, .prose li { color: var(--text-dim); font-size: 16px; margin-bottom: 12px; }
.prose ul { padding-left: 22px; margin-bottom: 16px; }
.prose a { color: var(--accent); text-decoration: none; }
.prose a:hover { text-decoration: underline; }
.prose strong { color: var(--text); }
.notice {
  background: var(--bg-card); border: 1px solid var(--border);
  border-left: 3px solid var(--accent); border-radius: 10px;
  padding: 16px 18px; margin: 20px 0; font-size: 15px; color: var(--text-dim);
}

/* Download */
.dl-box {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 16px; padding: 36px; text-align: center; margin: 32px 0;
}
.dl-box .btn { margin-top: 8px; }
.dl-meta { font-family: var(--mono); font-size: 13px; color: var(--text-dim); margin-top: 16px; }

/* FAQ */
details {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px 20px; margin-bottom: 10px;
}
details summary { cursor: pointer; font-weight: 600; font-size: 16px; }
details p { margin-top: 10px; }

/* Footer */
footer {
  border-top: 1px solid var(--border); padding: 36px 0 48px;
  font-size: 14px; color: var(--text-dim);
}
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
footer a { color: var(--text-dim); text-decoration: none; margin-right: 18px; }
footer a:hover { color: var(--text); }

@media (max-width: 640px) {
  .hero { padding: 48px 0 40px; }
  section { padding: 44px 0; }
  footer .wrap { flex-direction: column; }
}