:root{
  --paper:#f3f0e8; --paper-2:#e9e5da; --ink:#111; --ink-2:#4a4740; --line:#111;
  --safe:#11a84a; --warn:#f2c200; --danger:#d7261e; --mono:"JetBrains Mono",ui-monospace,monospace;
  --sans:"Be Vietnam Pro",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono);letter-spacing:.06em;text-transform:uppercase;font-size:.78rem}

/* nav */
header{position:sticky;top:0;z-index:10;background:var(--paper);border-bottom:3px solid var(--line)}
.nav{display:flex;align-items:center;gap:28px;height:68px}
.logo{font-weight:900;font-size:1.55rem;letter-spacing:-.02em;text-decoration:none}
.tabs{display:flex;margin-left:auto;align-self:stretch}
.tabs a{display:flex;align-items:center;padding:0 18px;text-decoration:none;font-weight:700;font-size:.95rem;color:var(--ink-2);border-left:3px solid transparent;position:relative}
.tabs a:hover{color:var(--ink);background:var(--paper-2)}
.tabs a[aria-current=page]{color:var(--ink);background:var(--warn)}
.tabs a[aria-current=page]::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:3px;background:var(--ink)}
.pagehead{padding:64px 0 48px;border-bottom:3px solid var(--line)}
h1.ph{font-size:clamp(2rem,4.6vw,3.6rem);line-height:1.05;font-weight:900;letter-spacing:-.035em;margin:10px 0 0;max-width:20em}
h1.ph em{font-style:normal;background:var(--warn);padding:0 .12em}
.subnav{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}
.subnav a{text-decoration:none;border:2px solid var(--ink);padding:6px 12px;background:#fff;font-size:.72rem}
.subnav a:hover{background:var(--ink);color:var(--paper)}
section[id]{scroll-margin-top:80px}
.timeline{list-style:none;border-left:3px solid var(--ink);margin-left:8px}
.timeline li{display:grid;grid-template-columns:120px 1fr;gap:24px;padding:0 0 36px 28px;position:relative}
.timeline li::before{content:"";position:absolute;left:-12px;top:4px;width:21px;height:21px;background:var(--warn);border:3px solid var(--ink)}
.timeline li.now::before{background:var(--safe)}
.timeline .when{font-weight:700;padding-top:4px}
.timeline .prize{display:inline-block;background:var(--ink);color:var(--paper);padding:3px 10px;font-weight:700}
.timeline h3{font-size:1.3rem;font-weight:800;margin:8px 0 4px;letter-spacing:-.01em}
.timeline p{color:var(--ink-2)}
.foot-links{display:flex;gap:18px}
.foot-links a{text-decoration:none}
.btn{display:inline-flex;align-items:center;gap:10px;background:var(--ink);color:var(--paper);text-decoration:none;font-weight:700;padding:12px 20px;border:3px solid var(--ink);font-size:.95rem;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translate(-3px,-3px);box-shadow:6px 6px 0 var(--warn)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.ghost:hover{box-shadow:6px 6px 0 var(--ink)}
.dot{width:9px;height:9px;border-radius:50%;background:var(--safe);box-shadow:0 0 0 0 rgba(17,168,74,.6);animation:pulse 1.8s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(17,168,74,0)}100%{box-shadow:0 0 0 0 rgba(17,168,74,0)}}

/* hero */
.hero{padding:72px 0 56px;border-bottom:3px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
.tag{display:inline-flex;align-items:center;gap:10px;border:2px solid var(--ink);padding:6px 12px;background:#fff}
h1{font-size:clamp(2.4rem,5.4vw,4.4rem);line-height:1.02;font-weight:900;letter-spacing:-.035em;margin:22px 0 20px}
h1 em{font-style:normal;background:var(--warn);padding:0 .12em;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.lead{font-size:1.15rem;color:var(--ink-2);max-width:34em}
.cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.shot{border:3px solid var(--ink);background:#fff;box-shadow:12px 12px 0 var(--ink)}
.shot-bar{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;border-bottom:3px solid var(--ink);background:var(--paper-2)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);border:3px solid var(--ink);margin-top:56px;background:#fff}
.stat{padding:18px 20px;border-right:3px solid var(--ink)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:1.7rem;font-weight:900;letter-spacing:-.02em}

/* sections */
section{padding:88px 0;border-bottom:3px solid var(--line)}
.kicker{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.kicker span{background:var(--ink);color:var(--paper);padding:3px 8px}
h2{font-size:clamp(1.9rem,3.6vw,2.9rem);font-weight:900;letter-spacing:-.03em;line-height:1.08;max-width:22em}
.sub{color:var(--ink-2);max-width:44em;margin-top:14px;font-size:1.06rem}
.cards{display:grid;gap:0;margin-top:44px;border:3px solid var(--ink);background:#fff}
.c3{grid-template-columns:repeat(3,1fr)}
.c4{grid-template-columns:repeat(4,1fr)}
.card{padding:28px 26px;border-right:3px solid var(--ink)}
.card:last-child{border-right:0}
.card h3{font-size:1.18rem;font-weight:800;margin:14px 0 8px;letter-spacing:-.01em}
.card p{color:var(--ink-2);font-size:.97rem}
.ico{width:44px;height:44px;border:3px solid var(--ink);display:grid;place-items:center;font-weight:900}
.ico.r{background:var(--danger);color:#fff}.ico.y{background:var(--warn)}.ico.g{background:var(--safe);color:#fff}.ico.k{background:var(--ink);color:var(--paper)}
.dark{background:var(--ink);color:var(--paper)}
.dark .sub,.dark .card p{color:#bdb8ab}
.dark .kicker span{background:var(--warn);color:var(--ink)}
.dark .cards{background:#1b1b1b;border-color:var(--paper)}
.dark .card{border-color:var(--paper)}
.dark .ico{border-color:var(--paper)}

/* tunnel diagram */
.diagram{margin-top:44px;border:3px solid var(--paper);padding:26px 18px 14px;background:#161616}
.diagram svg{width:100%;height:auto}
.formula{display:inline-block;margin-top:18px;font-family:var(--mono);background:var(--warn);color:var(--ink);padding:8px 14px;font-weight:700}

/* tech rows */
.rows{margin-top:40px;border-top:3px solid var(--ink)}
.row{display:grid;grid-template-columns:90px 1fr 1.4fr;gap:28px;padding:26px 0;border-bottom:2px solid var(--ink)}
.row .n{font-family:var(--mono);font-size:1.6rem;font-weight:700}
.row h3{font-size:1.25rem;font-weight:800;letter-spacing:-.01em}
.row p{color:var(--ink-2)}

/* scenario */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:44px}
.step{border:3px solid var(--ink);background:#fff;padding:22px;position:relative}
.step::before{counter-increment:s;content:"0" counter(s);font-family:var(--mono);font-weight:700;font-size:.85rem;background:var(--ink);color:var(--paper);padding:3px 8px;position:absolute;top:-14px;left:16px}
.step h3{font-size:1.05rem;font-weight:800;margin:8px 0 6px}
.step p{font-size:.93rem;color:var(--ink-2)}
.step.alert{background:var(--danger);color:#fff}.step.alert p{color:#ffe1df}

/* prototype */
.proto{display:grid;grid-template-columns:1fr 1fr;gap:0;border:3px solid var(--ink);margin-top:44px;background:#fff}
.proto>div{padding:28px}
.proto>div+div{border-left:3px solid var(--ink);background:var(--paper-2)}
.proto ul{list-style:none;margin-top:14px}
.proto li{padding:10px 0;border-bottom:1px dashed #9b968a;display:flex;gap:12px}
.proto li:last-child{border-bottom:0}
.chk{font-family:var(--mono);font-weight:700}
.ok .chk{color:var(--safe)} .wip .chk{color:#b07f00}

/* business */
.biz{display:grid;grid-template-columns:1fr 1.15fr;gap:32px;margin-top:44px;align-items:start}
.price{border:3px solid var(--ink);background:#fff}
.price div{padding:20px 24px;border-bottom:3px solid var(--ink)}
.price div:last-child{border-bottom:0}
.price b{font-size:1.8rem;font-weight:900;letter-spacing:-.02em;display:block}
table{width:100%;border-collapse:collapse;background:#fff;border:3px solid var(--ink);font-size:.95rem}
th,td{padding:12px 14px;text-align:right;border-bottom:1px solid #cfcabe}
th:first-child,td:first-child{text-align:left}
thead th{background:var(--ink);color:var(--paper);font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase}
tr.tot td{font-weight:800;border-top:3px solid var(--ink)}
.neg{color:var(--danger)}.pos{color:var(--safe)}
.note{font-size:.88rem;color:var(--ink-2);margin-top:10px}

/* team */
.team{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:44px}
.member{border:3px solid var(--ink);background:#fff;transition:transform .15s,box-shadow .15s}
.member:hover{transform:translate(-4px,-4px);box-shadow:8px 8px 0 var(--ink)}
.avatar{aspect-ratio:1;display:grid;place-items:center;font-size:3.4rem;font-weight:900;border-bottom:3px solid var(--ink);letter-spacing:-.04em}
.member:nth-child(1) .avatar{background:var(--warn)}
.member:nth-child(2) .avatar{background:#9fd8b4}
.member:nth-child(3) .avatar{background:#f0b9a8}
.member:nth-child(4) .avatar{background:#b9c8ee}
.member .info{padding:16px 18px}
.member h3{font-size:1.08rem;font-weight:800}
.role{margin-top:4px;color:var(--ink-2)}
.lead-badge{display:inline-block;margin-top:8px;background:var(--ink);color:var(--paper);padding:2px 8px}

/* final cta */
.final{background:var(--warn);text-align:center}
.final h2{margin:0 auto}
.final .cta{justify-content:center}
footer{padding:28px 0;font-size:.9rem}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

@media (max-width:960px){
  .nav{flex-wrap:wrap;height:auto;padding-top:12px;gap:0 16px}
  .nav .btn.demo{margin-left:auto}
  .tabs{order:3;width:100%;margin:12px 0 0;overflow-x:auto;border-top:3px solid var(--ink);scrollbar-width:none}
  .tabs::-webkit-scrollbar{display:none}
  .tabs a{padding:12px 14px;white-space:nowrap;flex:1;justify-content:center}
  .timeline li{grid-template-columns:1fr;gap:6px}
  .hero-grid,.biz,.proto{grid-template-columns:1fr}
  .proto>div+div{border-left:0;border-top:3px solid var(--ink)}
  .c3,.c4{grid-template-columns:1fr 1fr}
  .card{border-bottom:3px solid var(--ink)}
  .steps,.team{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:1fr 1fr}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(-n+2){border-bottom:3px solid var(--ink)}
  .row{grid-template-columns:60px 1fr}
  .row p{grid-column:2}
}
@media (max-width:600px){
  .wrap{padding:0 16px}
  .c3,.c4,.steps{grid-template-columns:1fr}
  .card{border-right:0}
  .hero{padding:44px 0 40px}
  section{padding:64px 0}
  .shot{box-shadow:6px 6px 0 var(--ink)}
  .nav .btn{padding:8px 12px;font-size:.85rem}
  .tabs a{font-size:.85rem;padding:11px 10px}
  .pagehead{padding:40px 0 32px}
  table{font-size:.82rem}
  th,td{padding:9px 8px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}