:root {
  --bg: #0d0c11;
  --bg-soft: #15131b;
  --panel: #1b1823;
  --panel-2: #201d2b;
  --text: #f6f3fb;
  --muted: #aaa4b7;
  --line: rgba(255,255,255,.09);
  --accent: #8d7cf6;
  --accent-2: #b7adff;
  --c64-blue: #3b39a2;
  --c64-light: #7f79d8;
  --success: #72d6a4;
  --max: 1180px;
  --shadow: 0 24px 80px rgba(0,0,0,.34);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 75% -10%, rgba(141,124,246,.15), transparent 32rem),
    radial-gradient(circle at 10% 15%, rgba(59,57,162,.13), transparent 26rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }
img { max-width: 100%; display: block; }
button, a { -webkit-tap-highlight-color: transparent; }

.shell { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(13,12,17,.78);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -.03em;
}
.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, var(--accent), #6657d7);
  color: white;
  box-shadow: 0 8px 24px rgba(108,92,231,.25);
  font: 800 12px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}
.brand-word { font-size: 19px; }
.nav { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 8px 11px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 650;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); background: rgba(255,255,255,.06); }

.hero { padding: 92px 0 68px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 72px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  border: 1px solid rgba(141,124,246,.35);
  border-radius: 999px;
  color: var(--accent-2);
  background: rgba(141,124,246,.08);
  font-size: 13px;
  font-weight: 750;
}
.eyebrow-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--success); box-shadow: 0 0 14px rgba(114,214,164,.7); }
h1, h2, h3 { line-height: 1.07; letter-spacing: -.04em; margin: 0; }
h1 { font-size: clamp(48px, 7vw, 84px); margin-top: 22px; max-width: 780px; }
h1 span { color: var(--accent-2); }
.lede { font-size: clamp(18px, 2vw, 22px); color: var(--muted); max-width: 720px; margin: 24px 0 0; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 750;
  border: 1px solid transparent;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}
.button:hover { transform: translateY(-1px); }
.button.primary { background: var(--text); color: #111015; }
.button.secondary { background: rgba(255,255,255,.05); border-color: var(--line); color: var(--text); }
.button.is-disabled { opacity: .45; cursor: not-allowed; transform: none; }
.hero-note { margin-top: 15px; font-size: 13px; color: #817b8c; }

.device-stage { position: relative; min-height: 520px; display: grid; place-items: center; }
.glow { position: absolute; inset: 15% 10%; border-radius: 50%; background: rgba(108,92,231,.22); filter: blur(70px); }
.ipad {
  width: min(100%, 530px);
  aspect-ratio: 1.34;
  position: relative;
  border-radius: 32px;
  padding: 12px;
  background: linear-gradient(145deg, #34303d, #141219);
  border: 1px solid rgba(255,255,255,.11);
  box-shadow: var(--shadow);
  transform: rotate(2deg);
}
.ipad::after { content: ""; position: absolute; width: 6px; height: 6px; border-radius: 50%; background: #0b0a0e; left: 50%; top: 4px; transform: translateX(-50%); }
.screen {
  height: 100%;
  border-radius: 23px;
  overflow: hidden;
  background: #07070a;
  border: 1px solid rgba(255,255,255,.05);
  display: grid;
  grid-template-rows: 42px 1fr 52px;
}
.mock-toolbar { display: flex; align-items: center; gap: 8px; padding: 0 13px; border-bottom: 1px solid rgba(255,255,255,.07); background: #17151d; }
.mock-pill { width: 28px; height: 28px; border-radius: 8px; background: #25222f; border: 1px solid rgba(255,255,255,.06); }
.mock-pill.wide { width: 62px; }
.c64-wrap { display: grid; grid-template-columns: 1fr 92px; gap: 10px; padding: 18px; align-items: center; }
.c64-display {
  aspect-ratio: 4/3;
  background: var(--c64-light);
  border: 18px solid var(--c64-blue);
  display: grid;
  place-items: center;
  box-shadow: inset 0 0 28px rgba(0,0,0,.12);
  position: relative;
}
.c64-text {
  color: #d8d5ff;
  font: 700 clamp(9px, 1.2vw, 13px)/1.55 ui-monospace, SFMono-Regular, Menlo, monospace;
  white-space: pre-line;
  text-align: left;
}
.c64-display::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(to bottom, transparent 0 3px, rgba(0,0,0,.045) 4px);
  pointer-events: none;
}
.mock-rail { display: grid; gap: 8px; }
.mock-card { padding: 10px; border-radius: 10px; border: 1px solid rgba(255,255,255,.07); background: #17151d; color: #a9a4b3; font: 600 8px/1.4 ui-monospace, monospace; }
.mock-card strong { color: white; display: block; margin-bottom: 3px; font-size: 9px; }
.mock-bottom { display: flex; align-items: center; justify-content: center; gap: 8px; border-top: 1px solid rgba(255,255,255,.07); background: #17151d; }
.key { height: 27px; min-width: 34px; border-radius: 6px; background: #2a2634; border-bottom: 2px solid #0f0e13; }

.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 34px; }
.stat { padding: 15px 16px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.025); }
.stat strong { display: block; font-size: 18px; letter-spacing: -.02em; }
.stat span { color: var(--muted); font-size: 12px; }

.section { padding: 92px 0; border-top: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: 36px; }
.kicker { color: var(--accent-2); font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; margin-bottom: 11px; }
h2 { font-size: clamp(34px, 5vw, 56px); }
.section-head p, .body-copy { color: var(--muted); font-size: 18px; margin: 18px 0 0; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { min-height: 245px; padding: 25px; border-radius: 20px; border: 1px solid var(--line); background: linear-gradient(145deg, rgba(255,255,255,.035), rgba(255,255,255,.014)); }
.card-icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 12px; background: rgba(141,124,246,.12); color: var(--accent-2); font: 800 12px/1 ui-monospace, monospace; margin-bottom: 28px; }
.card h3 { font-size: 22px; margin-bottom: 11px; }
.card p { margin: 0; color: var(--muted); }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.list-clean { list-style: none; padding: 0; margin: 22px 0 0; }
.list-clean li { padding: 14px 0; border-bottom: 1px solid var(--line); display: flex; gap: 12px; color: var(--muted); }
.list-clean li::before { content: "✓"; color: var(--success); font-weight: 900; }

.callout { padding: 34px; border-radius: 24px; border: 1px solid rgba(141,124,246,.25); background: linear-gradient(135deg, rgba(141,124,246,.11), rgba(59,57,162,.08)); }
.callout h3 { font-size: 28px; }
.callout p { color: var(--muted); margin: 12px 0 0; }

.page-hero { padding: 78px 0 54px; border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: clamp(42px, 6vw, 68px); max-width: 900px; }
.page-hero p { max-width: 760px; color: var(--muted); font-size: 20px; margin: 18px 0 0; }
.prose { width: min(calc(100% - 40px), 860px); margin: 0 auto; padding: 68px 0 100px; }
.prose h2 { font-size: 30px; margin: 52px 0 14px; }
.prose h3 { font-size: 21px; margin: 32px 0 10px; }
.prose p, .prose li { color: #c0bac9; }
.prose ul { padding-left: 22px; }
.prose a { color: var(--accent-2); }
.notice { padding: 18px 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); color: var(--muted); }
.support-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 30px 0 12px; }
.support-card { padding: 24px; border: 1px solid var(--line); background: var(--panel); border-radius: 18px; }
.support-card h3 { margin-top: 0; }

.site-footer { border-top: 1px solid var(--line); padding: 34px 0 42px; color: #8d8797; font-size: 13px; }
.footer-grid { display: flex; justify-content: space-between; gap: 26px; align-items: flex-start; }
.footer-links { display: flex; flex-wrap: wrap; gap: 14px; }
.footer-links a { color: #b8b1c1; text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }
.legal { max-width: 680px; margin-top: 16px; }

.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.muted { color: var(--muted); }

@media (max-width: 900px) {
  .hero { padding-top: 64px; }
  .hero-grid, .split { grid-template-columns: 1fr; }
  .hero-grid { gap: 36px; }
  .device-stage { min-height: 0; }
  .ipad { transform: none; }
  .cards { grid-template-columns: 1fr 1fr; }
  .stat-row { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  .shell { width: min(calc(100% - 28px), var(--max)); }
  .header-inner { min-height: auto; padding: 12px 0; align-items: flex-start; flex-direction: column; gap: 9px; }
  .nav { justify-content: flex-start; gap: 2px; }
  .nav a { padding: 7px 9px; }
  .hero { padding: 52px 0 52px; }
  .cards, .support-grid { grid-template-columns: 1fr; }
  .section { padding: 68px 0; }
  .c64-wrap { grid-template-columns: 1fr; padding: 12px; }
  .mock-rail { grid-template-columns: repeat(3, 1fr); }
  .mock-card { min-height: 50px; }
  .ipad { border-radius: 24px; }
  .screen { border-radius: 16px; }
  .footer-grid { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}