:root {
  --bg: #070910;
  --bg-2: #0c1019;
  --panel: rgba(22, 27, 40, 0.6);
  --panel-solid: #141a27;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #eef1f8;
  --muted: #98a2ba;
  --accent: #ff5c9d;
  --accent-2: #8b7bff;
  --accent-3: #4dd0e1;
  --ok: #46d38a;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --maxw: 1140px;
  --ease: cubic-bezier(.22, 1, .36, 1);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--sans); line-height: 1.65; letter-spacing: -.01em;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--mono); }

/* ---------- global fx layers ---------- */
#progress { position: fixed; top: 0; left: 0; height: 2px; width: 0; z-index: 100;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3)); box-shadow: 0 0 12px var(--accent-2); }
#spotlight { position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: 0; transition: opacity .4s;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), rgba(139,123,255,.12), transparent 60%); }
@media (pointer: fine) { #spotlight { opacity: 1; } }

/* aurora blobs behind hero */
.aurora { position: absolute; inset: 0; overflow: hidden; z-index: -1; filter: blur(60px); opacity: .55; }
.aurora span { position: absolute; border-radius: 50%; mix-blend-mode: screen; }
.aurora .a1 { width: 480px; height: 480px; left: 8%; top: -10%; background: radial-gradient(circle, var(--accent), transparent 70%); animation: drift1 18s var(--ease) infinite alternate; }
.aurora .a2 { width: 520px; height: 520px; right: 6%; top: -6%; background: radial-gradient(circle, var(--accent-2), transparent 70%); animation: drift2 22s var(--ease) infinite alternate; }
.aurora .a3 { width: 420px; height: 420px; left: 40%; top: 20%; background: radial-gradient(circle, var(--accent-3), transparent 70%); opacity: .5; animation: drift1 26s var(--ease) infinite alternate-reverse; }
@keyframes drift1 { to { transform: translate(60px, 40px) scale(1.15); } }
@keyframes drift2 { to { transform: translate(-70px, 50px) scale(1.1); } }

/* ---------- nav ---------- */
header.nav { position: sticky; top: 0; z-index: 50;
  background: rgba(7,9,16,.6); backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; font-size: 1.18rem; color: var(--text); letter-spacing: -.02em; }
.brand:hover { text-decoration: none; }
.brand .brand-logo { width: 26px; height: 26px; border-radius: 7px; display: block; box-shadow: 0 0 16px rgba(139,123,255,.5); animation: pulse 3s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 22px var(--accent); } }
.nav-links { display: flex; align-items: center; gap: 22px; font-size: .94rem; }
.nav-links a { color: var(--muted); transition: color .2s; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.btn { position: relative; display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 11px;
  font-weight: 600; font-size: .92rem; border: 1px solid var(--border-strong); color: var(--text);
  background: var(--panel); backdrop-filter: blur(8px); overflow: hidden;
  transition: transform .18s var(--ease), border-color .18s, box-shadow .18s; }
.btn:hover { transform: translateY(-2px); border-color: var(--accent); text-decoration: none; box-shadow: 0 10px 30px -12px rgba(255,92,157,.5); }
.btn.primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border: none; color: #fff; }
.btn.primary::after { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.35) 50%, transparent 70%); transform: translateX(-120%); transition: transform .6s; }
.btn.primary:hover::after { transform: translateX(120%); }
.btn.ghost { background: transparent; }

/* ---------- hero ---------- */
.hero { padding: 96px 0 40px; text-align: center; position: relative; }
.pill { display: inline-flex; align-items: center; gap: 8px; font-size: .8rem; color: var(--muted);
  border: 1px solid var(--border-strong); background: var(--panel); backdrop-filter: blur(8px);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 26px; }
.pill b { color: var(--accent); }
h1.hero-title { font-size: clamp(2.4rem, 6.5vw, 4rem); line-height: 1.05; margin: 0 0 22px; letter-spacing: -.03em; font-weight: 800; }
h1.hero-title .grad { background: linear-gradient(120deg, var(--accent), var(--accent-2), var(--accent-3), var(--accent)); background-size: 300% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent; animation: shimmer 8s linear infinite; }
@keyframes shimmer { to { background-position: 300% 0; } }
.hero-sub { max-width: 740px; margin: 0 auto 32px; color: var(--muted); font-size: 1.14rem; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 30px; }

/* install box */
.install { max-width: 720px; margin: 0 auto; text-align: left; }
.cmd-label { font-family: var(--mono); font-size: .76rem; color: var(--muted); margin-bottom: 6px; }
.install .install-grid { grid-template-columns: 1fr; }
.codebox { position: relative; display: flex; align-items: center; gap: 10px;
  background: var(--panel-solid); border: 1px solid var(--border-strong); border-radius: 12px; padding: 14px 15px;
  font-family: var(--mono); font-size: .86rem; overflow-x: auto; }
.codebox .prompt { color: var(--ok); user-select: none; }
.codebox code { color: var(--text); white-space: pre; }
.copy { margin-left: auto; flex: none; cursor: pointer; font-family: var(--sans); font-size: .74rem;
  color: var(--muted); background: var(--bg-2); border: 1px solid var(--border-strong); border-radius: 8px; padding: 5px 10px; transition: all .2s; }
.copy:hover { color: var(--text); border-color: var(--accent); }

/* hero screenshot with glow */
.shot { margin: 54px auto 0; max-width: 960px; position: relative; border: 1px solid var(--border-strong); border-radius: 16px; overflow: hidden;
  box-shadow: 0 40px 120px -40px rgba(139,123,255,.5), 0 0 0 1px rgba(255,255,255,.03) inset; }
.shot::before { content: ""; position: absolute; inset: -1px; z-index: -1; background: linear-gradient(135deg, var(--accent), transparent 40%, var(--accent-2)); opacity: .5; filter: blur(30px); }
.shot img { display: block; width: 100%; }

/* ---------- stats band ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 40px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.stat { text-align: center; }
.stat .num { font-size: clamp(2rem, 5vw, 2.8rem); font-weight: 800; letter-spacing: -.03em; background: linear-gradient(135deg, var(--text), var(--muted)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat .lbl { color: var(--muted); font-size: .9rem; margin-top: 2px; }

/* ---------- marquee ---------- */
.marquee { overflow: hidden; padding: 26px 0; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee-track { display: flex; gap: 14px; width: max-content; animation: scroll 32s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes scroll { to { transform: translateX(-50%); } }
.marquee .chip { font-family: var(--mono); font-size: .82rem; color: var(--muted); border: 1px solid var(--border-strong); border-radius: 999px; padding: 7px 15px; white-space: nowrap; background: var(--panel); }

/* ---------- sections ---------- */
section { padding: 84px 0; border-top: 1px solid var(--border); position: relative; }
section:first-of-type { border-top: none; }
.eyebrow { text-transform: uppercase; letter-spacing: .16em; font-size: .74rem; color: var(--accent); font-weight: 700; margin-bottom: 12px; }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.4rem); margin: 0 0 16px; letter-spacing: -.02em; font-weight: 750; }
.lead { color: var(--muted); max-width: 740px; font-size: 1.08rem; margin: 0 0 44px; }

/* evidence ladder */
.ladder { display: grid; gap: 12px; margin-top: 10px; }
.rung { display: grid; grid-template-columns: 48px 1fr; align-items: center; gap: 18px;
  background: var(--panel); backdrop-filter: blur(8px); border: 1px solid var(--border); border-radius: 13px; padding: 16px 20px;
  transition: border-color .2s, transform .2s; }
.rung:hover { border-color: var(--border-strong); transform: translateX(4px); }
.rung .n { font-family: var(--mono); font-weight: 700; font-size: 1.15rem; color: var(--accent-2); width: 48px; height: 48px; display: grid; place-items: center; border-radius: 12px; background: var(--bg-2); border: 1px solid var(--border-strong); }
.rung .t b { display: block; font-size: 1.05rem; }
.rung .t span { color: var(--muted); font-size: .93rem; }
.rung.hi { border-color: var(--accent); background: linear-gradient(180deg, rgba(255,92,157,.1), var(--panel)); box-shadow: 0 0 40px -12px rgba(255,92,157,.4); }
.rung.hi .n { color: var(--accent); border-color: var(--accent); }

/* feature grid */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { position: relative; background: var(--panel); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: 16px; padding: 24px; overflow: hidden;
  transition: transform .25s var(--ease), border-color .25s; }
.card::before { content: ""; position: absolute; inset: 0; border-radius: 16px; padding: 1px; background: linear-gradient(135deg, transparent, var(--accent-2), transparent); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity .3s; }
.card:hover { transform: translateY(-5px); }
.card:hover::before { opacity: 1; }
.card .ico { font-size: 1.6rem; }
.card h3 { margin: 12px 0 7px; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }
.card .tag { display: inline-block; font-family: var(--mono); font-size: .73rem; color: var(--accent); background: rgba(255,92,157,.1); padding: 3px 9px; border-radius: 7px; margin-bottom: 10px; }

/* surfaces */
.surface { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; margin-bottom: 56px; }
.surface:nth-child(even) .surface-media { order: 2; }
.surface-media { position: relative; }
.surface-media img { width: 100%; border: 1px solid var(--border-strong); border-radius: 14px; display: block; box-shadow: 0 30px 80px -40px rgba(0,0,0,.8); transition: transform .3s var(--ease); }
.surface-media:hover img { transform: scale(1.015); }
.surface h3 { font-size: 1.4rem; margin: 0 0 10px; }
.surface p { color: var(--muted); }
.surface .stack { margin-top: 14px; display: flex; gap: 8px; flex-wrap: wrap; }
.chip { font-size: .76rem; color: var(--muted); border: 1px solid var(--border-strong); border-radius: 999px; padding: 4px 11px; }

/* install section */
.install-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; max-width: 840px; }
.install-grid .codebox { font-size: .8rem; }

/* footer */
footer { border-top: 1px solid var(--border); padding: 44px 0; color: var(--muted); font-size: .92rem; }
.foot-inner { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; align-items: center; }
.foot-links { display: flex; gap: 20px; }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); transition-delay: var(--d, 0s); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

@media (max-width: 820px) {
  .grid, .stats { grid-template-columns: repeat(2, 1fr); }
  .surface, .install-grid { grid-template-columns: 1fr; }
  .surface:nth-child(even) .surface-media { order: 0; }
  .nav-links a:not(.btn) { display: none; }
  .stats { gap: 24px 12px; }
}