:root {
  --bg: #07080a;
  --panel: #0e1116;
  --line: rgba(255, 255, 255, .08);
  --line2: rgba(255, 255, 255, .14);
  --text: #eef1f5;
  --muted: #8b93a1;
  --accent: #c8ff3c;
  --accent-ink: #0b0f02;
  --cyan: #4fe3ff;
  --danger: #ff5c6c;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "JetBrains Mono", "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --w: 1180px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.6 var(--sans); -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
}
body::after {
  content: ""; position: fixed; z-index: -1; pointer-events: none;
  width: 1100px; height: 700px; left: 50%; top: -360px; transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(200, 255, 60, .16), rgba(79, 227, 255, .08) 55%, transparent);
  filter: blur(20px);
}
a { color: inherit; }
code { font-family: var(--mono); font-size: .92em; }
.muted { color: var(--muted); }
.grad { background: linear-gradient(90deg, var(--accent), var(--cyan)); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 24px;
  padding: 14px max(16px, calc((100vw - var(--w)) / 2));
  background: rgba(7, 8, 10, .65); backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -.02em; text-decoration: none; font-size: 17px; }
.brand-mark {
  display: inline-block; width: 22px; height: 22px; border-radius: 7px; position: relative; vertical-align: middle;
  background: conic-gradient(from 210deg, var(--accent), var(--cyan), var(--accent));
  box-shadow: 0 0 24px rgba(200, 255, 60, .35);
}
.brand-mark::after { content: ""; position: absolute; inset: 6px; border-radius: 3px; background: var(--bg); }
.links { display: flex; gap: 4px; margin: 0 auto; }
.links a { padding: 8px 12px; border-radius: 10px; text-decoration: none; color: var(--muted); font-size: 14px; font-weight: 500; }
.links a:hover { color: var(--text); background: rgba(255, 255, 255, .05); }
.nav-cta { display: flex; gap: 8px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 13px 22px; border-radius: 12px;
  border: 1px solid var(--line2); background: rgba(255, 255, 255, .04); text-decoration: none;
  font-weight: 650; transition: transform .15s, background .2s, box-shadow .2s;
}
.btn:hover { background: rgba(255, 255, 255, .08); transform: translateY(-1px); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; box-shadow: 0 10px 40px -12px rgba(200, 255, 60, .7); }
.btn.primary:hover { background: #d6ff66; }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.small { padding: 8px 14px; font-size: 14px; border-radius: 10px; }
.arrow { transition: transform .2s; }
.btn:hover .arrow { transform: translateX(3px); }

/* hero */
main { width: min(var(--w), 100%); margin: 0 auto; padding: 0 16px; }
.hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; padding: clamp(48px, 9vw, 120px) 0 72px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 14px; border-radius: 999px;
  border: 1px solid var(--line2); background: rgba(255, 255, 255, .03);
  font: 600 12px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted);
}
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); animation: blink 2s infinite; }
@keyframes blink { 50% { opacity: .35; } }
h1 { font-size: clamp(46px, 7.4vw, 92px); line-height: .98; letter-spacing: -.055em; margin: 22px 0 22px; font-weight: 800; }
.lead { color: var(--muted); font-size: clamp(16px, 1.6vw, 19px); max-width: 600px; margin: 0; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.algos { list-style: none; padding: 0; margin: 32px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.algos li { font: 600 12px var(--mono); padding: 6px 10px; border-radius: 8px; border: 1px solid var(--line); color: var(--muted); background: rgba(255, 255, 255, .02); }

.hero-visual { position: relative; min-height: 600px; }
.paper {
  position: absolute; left: -10px; top: 0; z-index: 2; width: 270px; padding: 18px 20px; border-radius: 6px;
  background: #f3f1ea; color: #111; transform: rotate(-7deg);
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .8), 0 0 0 1px rgba(0, 0, 0, .1);
  background-image: repeating-linear-gradient(#f3f1ea 0 27px, #dfe6ef 27px 28px);
}
.paper-head { font: 700 11px var(--mono); letter-spacing: .2em; color: #b91c1c; }
.paper-code { font: 700 17px/1.7 var(--mono); letter-spacing: .06em; margin: 8px 0; }
.paper-foot { font: italic 13px Georgia, serif; color: #555; }
.window {
  position: absolute; right: 0; top: 150px; width: min(440px, 92%); border-radius: 20px; overflow: hidden;
  background: rgba(14, 17, 22, .85); border: 1px solid var(--line2); backdrop-filter: blur(14px);
  box-shadow: 0 50px 100px -30px rgba(0, 0, 0, .9), 0 0 0 1px rgba(200, 255, 60, .06), 0 0 80px -20px rgba(79, 227, 255, .25);
}
.win-bar { display: flex; align-items: center; gap: 7px; padding: 14px 16px; border-bottom: 1px solid var(--line); font-size: 14px; }
.win-bar span { width: 11px; height: 11px; border-radius: 50%; background: rgba(255, 255, 255, .14); }
.win-bar b { margin-left: 10px; }
.win-bar em { margin-left: auto; font: 600 11px var(--mono); font-style: normal; color: var(--accent); padding: 3px 8px; border-radius: 99px; background: rgba(200, 255, 60, .08); border: 1px solid rgba(200, 255, 60, .2); }
.win-body { padding: 18px 16px; display: flex; flex-direction: column; gap: 8px; }
.b { max-width: 78%; padding: 9px 13px; border-radius: 15px 15px 15px 5px; background: #171b22; border: 1px solid var(--line); font-size: 14px; animation: rise .6s both; }
.b small { display: block; font-size: 11px; font-weight: 700; color: var(--cyan); }
.b.me { align-self: flex-end; border-radius: 15px 15px 5px 15px; background: linear-gradient(135deg, rgba(200, 255, 60, .18), rgba(79, 227, 255, .12)); border-color: rgba(200, 255, 60, .25); }
.b:nth-child(2) { animation-delay: .3s; } .b:nth-child(3) { animation-delay: .6s; } .b:nth-child(4) { animation-delay: .9s; }
.voice { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font: 12px var(--mono); color: var(--muted); }
.voice small { width: 100%; }
.wave { width: 130px; height: 20px; border-radius: 4px; background: repeating-linear-gradient(90deg, var(--cyan) 0 3px, transparent 3px 6px); -webkit-mask-image: linear-gradient(90deg, #000 0 60%, rgba(0, 0, 0, .3)); mask-image: linear-gradient(90deg, #000 0 60%, rgba(0, 0, 0, .3)); opacity: .8; }
.photo { width: 200px; height: 110px; padding: 0; background: linear-gradient(135deg, #2a3b1a, #12313a 60%, #0d1418); position: relative; overflow: hidden; }
.photo::after { content: ""; position: absolute; inset: auto -10% -40% -10%; height: 80%; background: radial-gradient(closest-side, rgba(200, 255, 60, .5), transparent); }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } }
.win-wire { white-space: nowrap; display: flex; gap: 10px; align-items: center; padding: 12px 16px; border-top: 1px dashed var(--line2); font-size: 12px; color: var(--muted); background: rgba(0, 0, 0, .25); }
.win-wire code { color: var(--accent); opacity: .75; white-space: nowrap; overflow: hidden; text-overflow: clip; font-size: 12px; }

/* strip */
.strip { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: 20px; background: rgba(255, 255, 255, .015); }
.strip div { padding: 26px 24px; display: grid; gap: 4px; }
.strip div + div { border-left: 1px solid var(--line); }
.strip b { font-size: 30px; letter-spacing: -.03em; }
.strip span { color: var(--muted); font-size: 14px; }

/* sections */
.section { padding: clamp(72px, 10vw, 130px) 0 0; }
.section-head { display: grid; gap: 14px; margin-bottom: 44px; max-width: 800px; }
.kicker { font: 600 12px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
h2 { font-size: clamp(32px, 4.6vw, 54px); line-height: 1.05; letter-spacing: -.04em; margin: 0; font-weight: 780; }
.sub { color: var(--muted); font-size: 18px; margin: 0; }
h3 { margin: 0; font-size: 19px; letter-spacing: -.02em; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; counter-reset: s; }
.steps li { position: relative; padding: 26px 22px; border-radius: 18px; border: 1px solid var(--line); background: linear-gradient(180deg, rgba(255, 255, 255, .035), rgba(255, 255, 255, .01)); display: grid; gap: 12px; align-content: start; }
.steps li::after { content: ""; position: absolute; left: 22px; right: 22px; top: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--accent), transparent); opacity: .5; }
.num { font: 700 13px var(--mono); color: var(--accent); }
.steps p { margin: 0; color: var(--muted); font-size: 15px; }

.bento { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.tile { padding: 26px; border-radius: 20px; border: 1px solid var(--line); background: var(--panel); display: grid; gap: 12px; align-content: start; transition: border-color .25s, transform .25s; }
.tile:hover { border-color: var(--line2); transform: translateY(-3px); }
.tile p { margin: 0; color: var(--muted); font-size: 15px; }
.tile b { color: var(--text); font-weight: 600; }
.tile.big { grid-column: span 2; grid-row: span 2; background: radial-gradient(600px 300px at 100% 0%, rgba(200, 255, 60, .09), transparent 60%), var(--panel); }
.tile.big h3 { font-size: clamp(24px, 3vw, 34px); letter-spacing: -.03em; }
.tile.big p { font-size: 17px; max-width: 620px; }
.tile-ic { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; font-size: 20px; color: var(--accent); background: rgba(200, 255, 60, .08); border: 1px solid rgba(200, 255, 60, .2); }
.layers { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: auto; padding-top: 18px; }
.layers span { font: 600 12px var(--mono); padding: 8px 12px; border-radius: 10px; border: 1px solid var(--line2); background: rgba(0, 0, 0, .3); }
.layers i { color: var(--accent); font-style: normal; }

.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.col { padding: 26px; border-radius: 20px; border: 1px solid var(--line); background: var(--panel); }
.col ul { margin: 16px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.col li { padding-left: 28px; position: relative; color: var(--muted); }
.col li::before { position: absolute; left: 0; top: 0; font: 700 14px var(--mono); }
.sees li::before { content: "◐"; color: #ffc85c; }
.hidden-col { border-color: rgba(200, 255, 60, .25); background: radial-gradient(500px 200px at 100% 0, rgba(200, 255, 60, .07), transparent), var(--panel); }
.hidden-col li::before { content: "✕"; color: var(--accent); }

.flow { margin-top: 14px; display: grid; gap: 8px; padding: 22px; border-radius: 20px; border: 1px solid var(--line); background: rgba(0, 0, 0, .3); }
.flow-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.tag { font: 600 13px var(--mono); padding: 7px 12px; border-radius: 10px; background: rgba(255, 255, 255, .05); border: 1px solid var(--line2); }
.op { font: 600 12px var(--mono); color: var(--accent-ink); background: var(--accent); padding: 4px 10px; border-radius: 99px; position: relative; }

.table-wrap { overflow-x: auto; margin-top: 14px; border: 1px solid var(--line); border-radius: 20px; }
table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 640px; }
th, td { text-align: left; padding: 15px 20px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font: 600 12px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); background: rgba(255, 255, 255, .02); }
td:nth-child(2) { font-family: var(--mono); font-size: 13px; color: var(--accent); }
td:nth-child(3) { color: var(--muted); }
tr:last-child td { border-bottom: 0; }

.honest { margin-top: 14px; padding: 26px; border-radius: 20px; border: 1px solid rgba(255, 200, 92, .25); background: rgba(255, 200, 92, .04); }
.honest ul { margin: 14px 0 0; padding-left: 20px; display: grid; gap: 10px; color: var(--muted); }
.honest b { color: var(--text); }

.tabs { display: inline-flex; gap: 4px; padding: 5px; border-radius: 14px; background: var(--panel); border: 1px solid var(--line); flex-wrap: wrap; }
.tabs button { border: 0; background: transparent; color: var(--muted); font: 600 14px var(--sans); padding: 9px 16px; border-radius: 10px; cursor: pointer; }
.tabs button.on { background: rgba(255, 255, 255, .08); color: var(--text); box-shadow: inset 0 0 0 1px var(--line2); }
.panes { margin-top: 14px; }
.pane { display: none; padding: 24px; border-radius: 20px; border: 1px solid var(--line); background: var(--panel); }
.pane.on { display: grid; gap: 12px; }
.pane p { margin: 0; color: var(--muted); }
pre { position: relative; margin: 0; padding: 18px 20px; padding-right: 90px; border-radius: 14px; background: #050607; border: 1px solid var(--line); overflow-x: auto; }
pre code { font-size: 13.5px; line-height: 1.7; color: #d7f7a0; white-space: pre; }
.copy { position: absolute; top: 10px; right: 10px; font: 600 12px var(--sans); color: var(--muted); background: rgba(255, 255, 255, .06); border: 1px solid var(--line2); border-radius: 8px; padding: 5px 10px; cursor: pointer; }
.copy:hover { color: var(--text); }

.faq { display: grid; gap: 10px; max-width: 860px; }
.guide { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.guide li { min-width: 0; padding: 26px 22px; border-radius: 18px; border: 1px solid var(--line); background: var(--panel); display: grid; gap: 12px; align-content: start; }
.guide p { margin: 0; color: var(--muted); font-size: 15px; }
.guide b { color: var(--text); }
.guide .hint { font-size: 13px; }
.guide pre { padding-right: 20px; padding-bottom: 46px; }
.guide pre code { white-space: pre-wrap; word-break: break-all; }
.guide pre.plain { padding-bottom: 18px; }
.guide pre.plain .copy { display: none; }
.guide pre .copy { top: auto; bottom: 10px; }
.more { margin-top: 14px; max-width: none; }
.more details pre { margin-bottom: 14px; padding-right: 20px; padding-bottom: 46px; }
.more details pre .copy { top: auto; bottom: 10px; }
.more details pre code { white-space: pre-wrap; word-break: break-all; }
.more details a { color: var(--accent); }
.dl { display: flex; flex-wrap: wrap; gap: 8px; }
.more details .dl a { padding: 8px 14px; border-radius: 10px; border: 1px solid rgba(200, 255, 60, .3); background: rgba(200, 255, 60, .06); text-decoration: none; font-weight: 600; font-size: 14px; }
.more details .dl a:hover { background: rgba(200, 255, 60, .14); }
.more details p { margin-bottom: 12px; }
.more details b { color: var(--text); }
.note { margin: 18px 0 0; color: var(--muted); }
.note b { color: var(--text); }
details { border: 1px solid var(--line); border-radius: 16px; background: var(--panel); padding: 0 22px; transition: border-color .2s; }
details[open] { border-color: var(--line2); }
summary { cursor: pointer; list-style: none; padding: 20px 0; font-weight: 650; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font: 400 22px/1 var(--mono); color: var(--accent); transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { margin: 0 0 20px; color: var(--muted); }

.cta-final { margin: clamp(80px, 12vw, 150px) 0 60px; padding: clamp(40px, 7vw, 80px) 24px; text-align: center; border-radius: 28px; border: 1px solid var(--line2); background: radial-gradient(700px 300px at 50% 0, rgba(200, 255, 60, .12), transparent 70%), var(--panel); }
.cta-final .hero-cta { justify-content: center; }

.footer { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 28px max(16px, calc((100vw - var(--w)) / 2)); border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s, transform .7s; }
.reveal.in { opacity: 1; transform: none; }

@media (max-width: 1000px) {
  .links { display: none; }
  .nav-cta { margin-left: auto; }
  .hero { grid-template-columns: 1fr; }
  .hero-visual { min-height: 580px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .guide { grid-template-columns: 1fr; }
  .bento { grid-template-columns: 1fr 1fr; }
  .strip { grid-template-columns: 1fr 1fr; }
  .strip div:nth-child(3) { border-left: 0; }
  .strip div:nth-child(n+3) { border-top: 1px solid var(--line); }
}
@media (max-width: 640px) {
  .nav-cta .ghost { display: none; }
  .steps, .bento, .compare { grid-template-columns: 1fr; }
  .tile.big { grid-column: auto; grid-row: auto; }
  .paper { width: 220px; left: 0; }
  .paper-code { font-size: 14px; }
  .window { top: 140px; }
  .hero-visual { min-height: 600px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}