:root {
  --bg: #0b0d10;
  --bg-elev: #12151a;
  --bg-card: #14181e;
  --border: #232a33;
  --text: #e8ecf1;
  --text-muted: #98a4b3;
  --text-dim: #66717f;
  --accent: #4ade80;
  --accent-dim: #2fa968;
  --danger: #f2555a;
  --warn: #e0a020;
  --mono: 'SFMono-Regular', ui-monospace, 'JetBrains Mono', Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --radius: 12px;
  --maxw: 1080px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.mono { font-family: var(--mono); }

.kicker {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 13, 16, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; }
.brand .shield { font-size: 1.2rem; }
.nav { display: flex; gap: 26px; align-items: center; }
.nav a { color: var(--text-muted); font-size: 0.9rem; transition: color .15s; }
.nav a:hover { color: var(--text); }
.nav .btn-sm { color: var(--bg); }
@media (max-width: 720px) { .nav a:not(.btn-sm) { display: none; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  background: var(--accent); color: #06210f;
  font-weight: 650; font-size: 0.95rem;
  padding: 13px 22px; border-radius: 10px;
  border: none; cursor: pointer;
  transition: transform .12s ease, background .15s;
}
.btn:hover { background: #5bec8f; transform: translateY(-1px); }
.btn-ghost {
  background: transparent; color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg-elev); border-color: var(--text-dim); }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; border-radius: 8px; }

/* ---------- Hero ---------- */
.hero { padding: 96px 0 72px; text-align: center; position: relative; }
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(60% 60% at 50% 0%, rgba(74,222,128,0.09), transparent 70%);
  pointer-events: none;
}
.hero .tagline {
  font-family: var(--mono); font-size: 0.78rem; color: var(--text-dim);
  letter-spacing: 0.06em; margin-bottom: 26px;
}
.hero .tagline span { color: var(--accent); }
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem); line-height: 1.05;
  font-weight: 750; letter-spacing: -0.02em; margin-bottom: 22px;
}
.hero h1 em { font-style: italic; color: var(--accent); font-weight: 600; }
.hero .sub {
  font-size: clamp(1.05rem, 2.2vw, 1.3rem); color: var(--text-muted);
  max-width: 640px; margin: 0 auto 38px;
}
.hero .cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero .trust {
  margin-top: 30px; font-size: 0.82rem; color: var(--text-dim);
  display: flex; gap: 18px; justify-content: center; flex-wrap: wrap;
}
.hero .trust b { color: var(--text-muted); font-weight: 600; }

/* ---------- Terminal demo ---------- */
.demo {
  max-width: 760px; margin: 54px auto 0;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; text-align: left;
  box-shadow: 0 30px 80px -30px rgba(0,0,0,0.7);
}
.demo-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 11px 16px; border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
}
.demo-dot { width: 11px; height: 11px; border-radius: 50%; }
.demo-title { font-family: var(--mono); font-size: 0.75rem; color: var(--text-dim); margin-left: 8px; }
.demo-body { padding: 20px 22px; font-family: var(--mono); font-size: 0.82rem; line-height: 1.85; }
.demo-body .u { color: var(--text); }
.demo-body .p { color: var(--text-dim); }
.demo-body .ok { color: var(--accent); }
.demo-body .no { color: var(--danger); }
.demo-body .warn { color: var(--warn); }

/* ---------- Sections ---------- */
section { padding: 84px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 52px; }
.section-head h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); letter-spacing: -0.02em; margin: 12px 0 14px; }
.section-head p { color: var(--text-muted); font-size: 1.05rem; }

/* ---------- Feature grid ---------- */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 860px) { .grid { grid-template-columns: 1fr; } }
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px 24px;
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--text-dim); transform: translateY(-2px); }
.card .ico { font-size: 1.6rem; margin-bottom: 14px; display: block; }
.card h3 { font-size: 1.12rem; margin-bottom: 8px; }
.card p { color: var(--text-muted); font-size: 0.94rem; }

/* ---------- How it works ---------- */
.how { background: var(--bg-elev); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }
.step { position: relative; padding-left: 52px; }
.step .n {
  position: absolute; left: 0; top: 0;
  width: 36px; height: 36px; border-radius: 9px;
  background: var(--bg-card); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-weight: 700; color: var(--accent);
}
.step h3 { font-size: 1.08rem; margin-bottom: 6px; }
.step p { color: var(--text-muted); font-size: 0.92rem; }

/* ---------- Download ---------- */
.download { text-align: center; }
.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; max-width: 760px; margin: 0 auto; }
@media (max-width: 720px) { .dl-grid { grid-template-columns: 1fr; } }
.dl-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 30px 22px; transition: border-color .15s, transform .15s;
}
.dl-card.primary { border-color: var(--accent-dim); box-shadow: 0 0 0 1px rgba(74,222,128,0.2); }
.dl-card:hover { transform: translateY(-2px); }
.dl-card .os-ico { font-size: 2.2rem; margin-bottom: 14px; }
.dl-card h3 { font-size: 1.15rem; margin-bottom: 4px; }
.dl-card .meta { font-size: 0.8rem; color: var(--text-dim); font-family: var(--mono); margin-bottom: 18px; }
.dl-card .btn { width: 100%; justify-content: center; }
.dl-card .alt-dl { display: block; margin-top: 10px; font-size: 0.8rem; color: var(--text-dim); }
.dl-card .alt-dl:hover { color: var(--text-muted); }
.dl-note { margin-top: 26px; color: var(--text-dim); font-size: 0.85rem; }
.dl-note code { background: var(--bg-elev); padding: 2px 8px; border-radius: 6px; font-family: var(--mono); color: var(--text-muted); }

/* ---------- Pricing ---------- */
.pricing { background: var(--bg-elev); border-top: 1px solid var(--border); }
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 860px) { .plans { grid-template-columns: 1fr; } }
.plan {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 26px; position: relative;
}
.plan.featured { border-color: var(--accent-dim); box-shadow: 0 0 0 1px rgba(74,222,128,0.2); }
.plan .badge {
  position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #06210f; font-size: 0.7rem; font-weight: 700;
  padding: 4px 12px; border-radius: 999px; font-family: var(--mono);
  letter-spacing: 0.05em; text-transform: uppercase;
}
.plan h3 { font-size: 1.2rem; margin-bottom: 6px; }
.plan .price { font-size: 2.3rem; font-weight: 750; letter-spacing: -0.02em; margin: 12px 0 2px; }
.plan .price span { font-size: 0.95rem; color: var(--text-dim); font-weight: 400; }
.plan .who { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 22px; }
.plan ul { list-style: none; margin-bottom: 26px; }
.plan li { padding: 7px 0 7px 26px; position: relative; font-size: 0.92rem; color: var(--text-muted); }
.plan li::before { content: '✓'; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.plan li.off { color: var(--text-dim); }
.plan li.off::before { content: '—'; color: var(--text-dim); }
.plan .btn { width: 100%; justify-content: center; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--border); padding: 48px 0 40px; }
footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
footer .brand { font-size: 1rem; }
footer .links { display: flex; gap: 22px; font-size: 0.88rem; color: var(--text-muted); flex-wrap: wrap; }
footer .links a:hover { color: var(--text); }
footer .fine { width: 100%; color: var(--text-dim); font-size: 0.8rem; margin-top: 8px; }

/* ---------- Callout ---------- */
.callout {
  background: linear-gradient(180deg, rgba(74,222,128,0.06), transparent);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 40px; text-align: center; margin-top: 20px;
}
.callout h2 { font-size: 1.8rem; margin-bottom: 12px; }
.callout p { color: var(--text-muted); margin-bottom: 24px; }

/* ---------- Contact form ---------- */
.contact-form {
  max-width: 560px; margin: 0 auto;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px;
}
.contact-form .field { margin-bottom: 18px; }
.contact-form label {
  display: block; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 6px;
}
.contact-form input, .contact-form textarea {
  width: 100%; background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 8px; padding: 11px 13px; color: var(--text);
  font-family: var(--sans); font-size: 0.95rem; resize: vertical;
}
.contact-form input:focus, .contact-form textarea:focus {
  outline: none; border-color: var(--accent-dim);
}
.contact-form .btn { width: 100%; justify-content: center; cursor: pointer; border: none; }
.contact-form .btn:disabled { opacity: 0.6; cursor: not-allowed; }
.contact-status { margin-top: 14px; font-size: 0.88rem; text-align: center; min-height: 1.2em; }
.contact-status.ok { color: var(--accent); }
.contact-status.err { color: var(--danger); }

/* ---------- Live shield animation ---------- */
.shield-demo { padding: 72px 0 90px; }
.shield-stage {
  position: relative; max-width: 820px; margin: 36px auto 0;
  background: radial-gradient(ellipse at center, rgba(74,222,128,0.05), transparent 70%), var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius);
  height: 420px; overflow: hidden;
}
#shield-canvas { width: 100%; height: 100%; display: block; cursor: pointer; }
.shield-hud {
  position: absolute; top: 14px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; pointer-events: none;
}
.hud-chip {
  display: flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: 0.78rem;
  background: rgba(10,12,16,0.75); border: 1px solid var(--border); border-radius: 20px;
  padding: 5px 12px; color: var(--text-muted); backdrop-filter: blur(4px);
}
.hud-chip b { color: var(--text); font-weight: 700; }
.hud-chip .dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; }
.hud-allow .dot { background: var(--accent); }
.hud-ask .dot { background: var(--warn); }
.hud-block .dot { background: var(--danger); }
.shield-caption { text-align: center; color: var(--text-dim); font-size: 0.82rem; margin-top: 16px; }
@media (max-width: 640px) { .shield-stage { height: 340px; } }