:root {
  --bg: #0b0e14;
  --panel: #141925;
  --panel-2: #1b2230;
  --text: #e6e9ef;
  --muted: #93a0b5;
  --accent: #5b8cff;
  --accent-2: #36d399;
  --border: #232c3d;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 70% -10%, #16203a 0%, var(--bg) 55%);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 24px; }

nav {
  display: flex; align-items: center; gap: 28px;
  padding: 18px 0; border-bottom: 1px solid var(--border);
}
nav .brand { font-weight: 700; font-size: 18px; letter-spacing: .2px; margin-right: auto; }
nav .brand span { color: var(--accent); }
nav a { color: var(--muted); font-size: 14px; font-weight: 500; }
nav a.active, nav a:hover { color: var(--text); text-decoration: none; }

.hero { padding: 72px 0 48px; }
.hero h1 { font-size: 44px; line-height: 1.1; margin: 0 0 16px; letter-spacing: -.5px; }
.hero p { font-size: 19px; color: var(--muted); max-width: 620px; margin: 0 0 28px; }
.pill { display:inline-block; font-size:12px; font-weight:600; color:var(--accent-2);
  background:rgba(54,211,153,.1); border:1px solid rgba(54,211,153,.3);
  padding:4px 12px; border-radius:999px; margin-bottom:20px; }

.btn {
  display: inline-block; cursor: pointer; border: 0; font: inherit; font-weight: 600;
  padding: 12px 22px; border-radius: 10px; font-size: 15px; margin: 4px 8px 4px 0;
}
.btn.primary { background: var(--accent); color: #fff; }
.btn.ghost { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
.btn:hover { filter: brightness(1.08); text-decoration: none; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 40px 0; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 16px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }

.price { display:grid; grid-template-columns: repeat(3,1fr); gap:16px; margin:36px 0; }
.tier { background: var(--panel); border:1px solid var(--border); border-radius:14px; padding:26px; text-align:center; }
.tier.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.tier .amt { font-size:34px; font-weight:700; margin:8px 0; }
.tier .amt small { font-size:14px; color:var(--muted); font-weight:500; }
.tier ul { list-style:none; padding:0; margin:16px 0; color:var(--muted); font-size:14px; }
.tier li { padding:5px 0; border-top:1px solid var(--border); }

footer { border-top:1px solid var(--border); margin-top:60px; padding:28px 0; color:var(--muted); font-size:13px; }
.note { background:var(--panel-2); border:1px solid var(--border); border-radius:10px; padding:14px 18px; font-size:13px; color:var(--muted); margin:24px 0; }
code { background:#0d1320; border:1px solid var(--border); border-radius:5px; padding:1px 6px; font-size:13px; color:#cdd6e6; }
.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--accent-2); color:#062; font-weight:600; padding:10px 18px; border-radius:10px;
  opacity:0; transition: all .25s ease; pointer-events:none; font-size:14px; }
.toast.show { opacity:1; transform: translateX(-50%) translateY(0); }

/* SPA soft-nav tab switcher (History API → history_change trigger) */
.tabs { display:flex; gap:6px; flex-wrap:wrap; margin:8px 0 18px; border-bottom:1px solid var(--border); }
.tab { background:none; border:0; border-bottom:2px solid transparent; color:var(--muted);
  font:inherit; font-weight:600; font-size:14px; padding:8px 14px; cursor:pointer; margin-bottom:-1px; }
.tab:hover { color:var(--text); }
.tab.active { color:var(--text); border-bottom-color:var(--accent); }
.panel { display:none; background:var(--panel); border:1px solid var(--border);
  border-radius:14px; padding:22px; }
.panel.active { display:block; }
.panel h3 { margin:0 0 8px; font-size:17px; }
.panel p { margin:0; color:var(--muted); font-size:14px; }

/* Newsletter signup form (form_submit trigger) */
.form { display:flex; gap:10px; flex-wrap:wrap; margin-top:14px; }
.form input { flex:1 1 200px; background:#0d1320; border:1px solid var(--border); border-radius:10px;
  color:var(--text); font:inherit; font-size:15px; padding:11px 14px; }
.form input:focus { outline:none; border-color:var(--accent); }

/* Flaky-beta error-demo button (js_error trigger) */
.btn.danger { background:var(--panel-2); color:var(--accent-2); border:1px solid rgba(54,211,153,.35); }

/* Promo banner far down the page (element_visibility trigger) */
.promo { margin:40px 0; padding:26px; border-radius:14px; text-align:center;
  background:linear-gradient(120deg, rgba(91,140,255,.14), rgba(54,211,153,.14));
  border:1px solid var(--border); opacity:0; transform:translateY(24px);
  transition:opacity .6s ease, transform .6s ease; }
.promo.in { opacity:1; transform:translateY(0); }
.promo h2 { margin:0 0 6px; font-size:22px; }
.promo p { margin:0; color:var(--muted); font-size:14px; }

/* Long changelog for scroll_depth */
.changelog { margin:36px 0; }
.changelog h2 { font-size:26px; margin:0 0 8px; }
.log-entry { border-left:2px solid var(--border); padding:0 0 0 20px; margin:0 0 30px; }
.log-entry .ver { font-weight:700; font-size:15px; color:var(--accent); }
.log-entry .date { font-size:12px; color:var(--muted); margin-left:8px; }
.log-entry ul { margin:8px 0 0; padding-left:18px; color:var(--muted); font-size:14px; }
.log-entry li { padding:2px 0; }

@media (max-width:720px){ .grid,.price{grid-template-columns:1fr;} .hero h1{font-size:34px;} }