:root {
  --bg: #0d1117; --elev: #161b22; --elev2: #1c2128; --border: #30363d;
  --text: #e6edf3; --dim: #8b949e; --green: #3fb950; --accent: #2ea043; --blue: #58a6ff;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --max: 1080px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Helvetica, Arial, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.muted { color: var(--dim); }
.mono { font-family: var(--mono); }

/* Nav */
.nav { position: sticky; top: 0; z-index: 10; background: rgba(13,17,23,0.85); backdrop-filter: saturate(160%) blur(12px); -webkit-backdrop-filter: saturate(160%) blur(12px); border-bottom: 1px solid rgba(48,54,61,0.6); }
.nav .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 18px; }
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 8px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.nav-links a { color: var(--dim); font-size: 15px; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
@media (max-width: 640px) { .nav-links a:not(.btn) { display: none; } }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 10px; padding: 12px 20px; font-weight: 600; font-size: 15.5px; border: 1px solid var(--border); background: var(--elev2); color: var(--text); cursor: pointer; transition: border-color .15s, background .15s, transform .15s; }
.btn:hover { text-decoration: none; border-color: #484f58; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: #3fb950; }
.btn.small { padding: 8px 14px; font-size: 14px; }
.btn .sub { font-weight: 400; opacity: .8; font-size: 13px; }

/* Hero */
.hero { padding: 72px 0 40px; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--green); background: rgba(63,185,80,0.1); border: 1px solid rgba(63,185,80,0.3); padding: 4px 12px; border-radius: 999px; }
.hero h1 { font-size: clamp(38px, 6vw, 60px); line-height: 1.05; letter-spacing: -0.03em; margin: 18px 0 18px; }
.hero h1 .accent { color: var(--green); }
.hero p.lead { font-size: 19px; color: var(--dim); max-width: 520px; margin: 0 0 28px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.fine { margin-top: 14px; font-size: 13.5px; color: var(--dim); }

/* Phone mockup */
.phone { width: 300px; max-width: 100%; margin: 0 auto; aspect-ratio: 9 / 18.5; background: #05070a; border: 1px solid #2b3139; border-radius: 44px; padding: 12px; box-shadow: 0 30px 80px rgba(0,0,0,0.55), 0 0 0 6px #10151c; position: relative; }
.screen { width: 100%; height: 100%; background: var(--bg); border-radius: 34px; overflow: hidden; display: flex; flex-direction: column; }
.notch { width: 96px; height: 26px; background: #05070a; border-radius: 0 0 16px 16px; margin: 0 auto; flex: none; }
.app-bar { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px 8px; background: var(--elev); border-bottom: 1px solid var(--border); }
.app-bar b { font-size: 14px; }
.mini-pill { font-size: 10.5px; display: inline-flex; align-items: center; gap: 5px; border: 1px solid var(--border); border-radius: 999px; padding: 2px 8px; color: var(--dim); }
.mini-pill i { width: 6px; height: 6px; border-radius: 50%; background: var(--green); display: inline-block; }
.tabs { display: flex; gap: 6px; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.tab { font-size: 10.5px; padding: 4px 9px; border-radius: 7px; background: var(--elev2); color: var(--dim); }
.tab.on { color: var(--green); border: 1px solid rgba(63,185,80,0.45); background: rgba(63,185,80,0.08); }
.term { flex: 1; padding: 10px 12px; font: 10.5px/1.55 var(--mono); color: var(--text); white-space: pre; overflow: hidden; }
.term .g { color: var(--green); } .term .d { color: var(--dim); } .term .b { color: var(--blue); }
.cursor { display: inline-block; width: 6px; height: 12px; background: var(--green); vertical-align: -2px; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.cmdbar { display: flex; gap: 6px; padding: 8px 10px 16px; border-top: 1px solid var(--border); background: var(--elev); }
.cmdbar .in { flex: 1; font: 10px var(--mono); color: var(--dim); background: var(--elev2); border: 1px solid var(--border); border-radius: 7px; padding: 6px 8px; }
.cmdbar .go { width: 30px; border-radius: 7px; background: var(--accent); }

@media (max-width: 860px) {
  .hero { padding-top: 44px; }
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-art { order: 2; }
}

/* Sections */
section { padding: 72px 0; }
.section-head { max-width: 640px; margin-bottom: 40px; }
.section-head h2 { font-size: clamp(28px, 4vw, 38px); letter-spacing: -0.02em; line-height: 1.15; margin: 0 0 12px; }
.section-head p { color: var(--dim); font-size: 17.5px; margin: 0; }
.alt { background: #0a0e13; border-top: 1px solid #161b22; border-bottom: 1px solid #161b22; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 860px) { .grid { grid-template-columns: 1fr; } }
.feature { background: var(--elev); border: 1px solid var(--border); border-radius: 14px; padding: 22px; }
.feature .ico { width: 38px; height: 38px; border-radius: 10px; background: rgba(63,185,80,0.1); border: 1px solid rgba(63,185,80,0.3); display: grid; place-items: center; color: var(--green); font: 700 15px var(--mono); margin-bottom: 14px; }
.feature h3 { margin: 0 0 6px; font-size: 17px; }
.feature p { margin: 0; color: var(--dim); font-size: 15px; }

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }
.step { position: relative; padding: 22px; border-radius: 14px; border: 1px solid var(--border); background: var(--elev); }
.step::before { counter-increment: step; content: counter(step); display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 700; font-size: 14px; margin-bottom: 12px; }
.step h3 { margin: 0 0 6px; font-size: 17px; }
.step p { margin: 0; color: var(--dim); font-size: 15px; }

.security { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
@media (max-width: 860px) { .security { grid-template-columns: 1fr; } }
.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { padding: 10px 0 10px 30px; position: relative; border-top: 1px solid var(--border); color: var(--dim); }
.checklist li:first-child { border-top: none; }
.checklist li b { color: var(--text); font-weight: 600; }
.checklist li::before { content: "✓"; position: absolute; left: 2px; top: 10px; color: var(--green); font-weight: 800; }
.diagram { display: flex; align-items: center; justify-content: space-between; gap: 8px; background: var(--elev); border: 1px solid var(--border); border-radius: 14px; padding: 26px 18px; }
.node { text-align: center; flex: none; width: 92px; }
.node .box { width: 56px; height: 56px; margin: 0 auto 8px; border-radius: 14px; background: var(--elev2); border: 1px solid var(--border); display: grid; place-items: center; font-size: 24px; }
.node .box.relay { border-color: rgba(88,166,255,0.45); }
.node small { color: var(--dim); font-size: 12.5px; display: block; }
.wire { flex: 1; height: 2px; background: repeating-linear-gradient(90deg, var(--green) 0 8px, transparent 8px 14px); position: relative; }
.wire span { position: absolute; top: -22px; left: 50%; transform: translateX(-50%); font-size: 11px; color: var(--green); white-space: nowrap; }

.pricing { display: grid; grid-template-columns: repeat(2, minmax(0, 340px)); gap: 16px; justify-content: center; }
@media (max-width: 720px) { .pricing { grid-template-columns: 1fr; } }
.plan { background: var(--elev); border: 1.5px solid var(--border); border-radius: 16px; padding: 26px; }
.plan.best { border-color: var(--green); background: linear-gradient(180deg, rgba(63,185,80,0.07), rgba(63,185,80,0) 60%), var(--elev); }
.plan .tag { display: inline-block; font-size: 12px; font-weight: 700; color: #0d1117; background: var(--green); border-radius: 6px; padding: 2px 8px; margin-bottom: 10px; }
.plan h3 { margin: 0; font-size: 18px; }
.plan .price { font-size: 40px; font-weight: 800; letter-spacing: -0.02em; margin: 10px 0 2px; }
.plan .price span { font-size: 16px; font-weight: 500; color: var(--dim); }
.plan p { color: var(--dim); margin: 0 0 18px; font-size: 14.5px; }
.plan ul { list-style: none; padding: 0; margin: 0; }
.plan li { padding: 6px 0 6px 24px; position: relative; font-size: 15px; }
.plan li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 800; }

.faq { max-width: 760px; }
details { border-top: 1px solid var(--border); padding: 16px 0; }
details:last-child { border-bottom: 1px solid var(--border); }
summary { cursor: pointer; font-weight: 600; font-size: 17px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--dim); font-weight: 400; font-size: 22px; line-height: 1; }
details[open] summary::after { content: "−"; }
details p { color: var(--dim); margin: 10px 0 0; }

.download { text-align: center; }
.download .icon { width: 96px; height: 96px; border-radius: 22px; margin: 0 auto 18px; display: block; box-shadow: 0 12px 40px rgba(0,0,0,0.5); }
.download h2 { font-size: clamp(30px, 4.5vw, 42px); margin: 0 0 10px; letter-spacing: -0.02em; }
.download p { color: var(--dim); font-size: 17.5px; margin: 0 auto 26px; max-width: 540px; }
.download .cta { justify-content: center; }

footer.site { border-top: 1px solid var(--border); padding: 30px 0 40px; color: var(--dim); font-size: 14px; }
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; }
footer.site nav { display: flex; gap: 20px; }
footer.site a { color: var(--dim); }
footer.site a:hover { color: var(--text); }

/* Legal pages */
.legal { max-width: 760px; padding: 56px 20px 72px; margin: 0 auto; }
.legal h1 { font-size: 38px; letter-spacing: -0.02em; margin: 0 0 6px; }
.legal .updated { color: var(--dim); margin: 0 0 12px; }
.legal .note { background: rgba(210,153,34,0.08); border: 1px solid rgba(210,153,34,0.35); border-radius: 10px; padding: 12px 14px; color: #e3b341; font-size: 14.5px; margin: 18px 0 30px; }
.legal h2 { font-size: 20px; margin: 30px 0 8px; }
.legal p, .legal li { color: #c9d1d9; }
.legal ul { padding-left: 20px; }