:root {
  --bg: #07090f;
  --bg-2: #0b1020;
  --bg-3: #111830;
  --line: rgba(148, 163, 184, 0.14);
  --line-strong: rgba(148, 163, 184, 0.3);
  --fg: #e6e9f2;
  --fg-2: #a3adc2;
  --fg-3: #6b7590;
  --accent: #22d3ee;
  --accent-2: #6366f1;
  --accent-grad: linear-gradient(120deg, #22d3ee, #6366f1);
  --ok: #34d399;
  --warn: #fbbf24;
  --radius: 14px;
  --max: 1120px;
  --sans: ui-sans-serif, -apple-system, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}
a { color: inherit; text-decoration: none; }
p { margin: 0; }
h1, h2, h3, h4 { margin: 0; font-weight: 800; letter-spacing: -0.02em; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.muted { color: var(--fg-2); }
.mono { font-family: var(--mono); font-size: 0.92em; }
.grad { background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: 10px; font-weight: 600; font-size: 15px;
  border: 1px solid var(--line-strong); color: var(--fg); background: var(--bg-3);
  transition: transform .12s ease, border-color .12s ease, background .12s ease;
  cursor: pointer;
}
.btn:hover { transform: translateY(-1px); border-color: var(--accent); }
.btn-primary { background: var(--accent-grad); border-color: transparent; color: #04101a; }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { background: transparent; }
.btn-sm { padding: 8px 12px; font-size: 14px; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(7, 9, 15, 0.7);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; height: 64px; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; }
.brand img { width: 28px; height: 28px; }
.nav-links { display: flex; gap: 22px; margin-left: 8px; color: var(--fg-2); font-size: 15px; }
.nav-links a:hover { color: var(--fg); }
.nav .spacer { flex: 1; }
@media (max-width: 720px) { .nav-links { display: none; } }

/* hero */
.hero { padding: 96px 0 72px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -20% -10% auto -10%; height: 70%;
  background: radial-gradient(60% 60% at 50% 0%, rgba(34, 211, 238, 0.18), transparent 70%),
              radial-gradient(40% 50% at 80% 20%, rgba(99, 102, 241, 0.2), transparent 70%);
  pointer-events: none;
}
.hero .wrap { position: relative; }
.pill {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--fg-2);
  border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; background: var(--bg-2);
}
.pill b { color: var(--fg); font-weight: 600; }
.hero h1 { font-size: clamp(44px, 7vw, 84px); line-height: 1.02; margin: 26px 0 22px; max-width: 900px; }
.hero .lede { font-size: clamp(17px, 2vw, 21px); color: var(--fg-2); max-width: 640px; }
.hero .cta { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }
.hero .fine { margin-top: 14px; font-size: 13px; color: var(--fg-3); }

/* app frame mock */
.frame {
  margin-top: 64px; border: 1px solid var(--line-strong); border-radius: 16px; background: var(--bg-2);
  box-shadow: 0 40px 120px rgba(0,0,0,.55), 0 0 0 1px rgba(255,255,255,.02) inset; overflow: hidden;
}
.frame-bar { display: flex; gap: 6px; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.frame-bar i { width: 10px; height: 10px; border-radius: 50%; background: #2a3247; display: block; }
.frame-body { display: grid; grid-template-columns: 220px 1fr 280px; min-height: 420px; }
.frame-side { border-right: 1px solid var(--line); padding: 14px; font-size: 13px; color: var(--fg-3); }
.frame-side .row { padding: 7px 8px; border-radius: 8px; }
.frame-side .row.active { background: var(--bg-3); color: var(--fg); }
.frame-main { padding: 22px; display: flex; flex-direction: column; gap: 14px; font-size: 14px; }
.bubble { border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; background: rgba(255,255,255,.02); max-width: 620px; color: var(--fg-2); }
.bubble.user { align-self: flex-end; background: var(--bg-3); color: var(--fg); }
.frame-right { border-left: 1px solid var(--line); padding: 14px; font-size: 13px; }
.frame-right h4 { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--fg-3); margin-bottom: 10px; }
.check { display: flex; gap: 8px; align-items: center; padding: 6px 0; color: var(--fg-2); }
.check::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--ok); }
.check.pending::before { background: var(--warn); }
@media (max-width: 900px) { .frame-body { grid-template-columns: 1fr; } .frame-side, .frame-right { display: none; } }

/* sections */
section { padding: 96px 0; border-top: 1px solid var(--line); }
.eyebrow { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); font-weight: 700; }
.h2 { font-size: clamp(32px, 4.5vw, 52px); margin: 12px 0 16px; }
.sub { font-size: 18px; color: var(--fg-2); max-width: 680px; }

.grid { display: grid; gap: 20px; margin-top: 44px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.card {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; background: var(--bg-2);
  transition: border-color .15s ease;
}
.card:hover { border-color: var(--line-strong); }
.card h3 { font-size: 20px; margin-bottom: 8px; }
.card p { color: var(--fg-2); font-size: 15px; }
.card ul { margin: 14px 0 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.card li { color: var(--fg-2); font-size: 15px; padding-left: 22px; position: relative; }
.card li::before { content: "→"; position: absolute; left: 0; color: var(--accent); }
.tag { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--fg-3); margin-bottom: 12px; }
.tag.lifetime { color: var(--accent); }

/* terminal */
.term {
  font-family: var(--mono); font-size: 13.5px; line-height: 1.7; border: 1px solid var(--line-strong);
  border-radius: 12px; background: #05070d; padding: 18px 20px; color: var(--fg-2); overflow: auto;
}
.term .p { color: var(--accent); }
.term .c { color: var(--fg-3); }
.term .k { color: var(--fg); }

/* steps */
.step-num { font-family: var(--mono); color: var(--accent); font-size: 14px; margin-bottom: 6px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 48px; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr; } }
.steps h3 { font-size: 24px; margin-bottom: 18px; }
.feature { padding: 16px 0; border-top: 1px solid var(--line); }
.feature b { display: block; font-weight: 700; margin-bottom: 4px; }
.feature span { color: var(--fg-2); font-size: 15px; }
.feature .tag { margin: 0 0 0 8px; display: inline; }

/* pricing */
.plans { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 48px; max-width: 900px; }
@media (max-width: 800px) { .plans { grid-template-columns: 1fr; } }
.plan { border: 1px solid var(--line); border-radius: 18px; padding: 32px; background: var(--bg-2); position: relative; }
.plan.featured { border-color: transparent; background:
  linear-gradient(var(--bg-2), var(--bg-2)) padding-box, var(--accent-grad) border-box; }
.plan .name { font-size: 14px; letter-spacing: .1em; text-transform: uppercase; font-weight: 700; color: var(--fg-2); }
.plan .price { font-size: 56px; font-weight: 800; letter-spacing: -0.03em; margin: 14px 0 4px; }
.plan .price small { font-size: 16px; color: var(--fg-2); font-weight: 500; letter-spacing: 0; }
.plan .desc { color: var(--fg-2); margin-bottom: 22px; }
.plan ul { list-style: none; padding: 0; margin: 0 0 26px; display: grid; gap: 10px; }
.plan li { padding-left: 26px; position: relative; color: var(--fg-2); }
.plan li::before { content: "✓"; position: absolute; left: 0; color: var(--ok); font-weight: 700; }
.plan li.x { color: var(--fg-3); }
.plan li.x::before { content: "–"; color: var(--fg-3); }
.badge { position: absolute; top: -13px; right: 24px; background: var(--accent-grad); color: #04101a; font-weight: 700; font-size: 12px; padding: 5px 10px; border-radius: 999px; }
.plan .btn { width: 100%; justify-content: center; }

/* faq */
details { border-top: 1px solid var(--line); padding: 18px 0; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 700; font-size: 18px; list-style: none; display: flex; justify-content: space-between; }
summary::after { content: "+"; color: var(--fg-3); }
details[open] summary::after { content: "–"; }
details p { margin-top: 10px; color: var(--fg-2); }

/* cta */
.cta-block { text-align: center; padding: 96px 0; }
.cta-block .h2 { margin-bottom: 12px; }

/* footer */
footer { border-top: 1px solid var(--line); padding: 48px 0 40px; color: var(--fg-3); font-size: 14px; }
footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 24px; margin-bottom: 32px; }
@media (max-width: 800px) { footer .cols { grid-template-columns: 1fr 1fr; } }
footer h4 { color: var(--fg); font-size: 14px; margin-bottom: 12px; }
footer a { display: block; padding: 4px 0; }
footer a:hover { color: var(--fg); }

/* thank-you */
.key-box { font-family: var(--mono); font-size: 26px; letter-spacing: .04em; padding: 20px 24px; border: 1px solid var(--line-strong); border-radius: 12px; background: var(--bg-2); display: inline-block; margin: 18px 0; user-select: all; }
.notice { border-left: 3px solid var(--accent); padding: 12px 16px; background: var(--bg-2); border-radius: 0 10px 10px 0; color: var(--fg-2); }