:root{
  --ground:#12131A; --surface:#1B1D27; --line:#2B2E3C; --line-strong:#3A3D4E;
  --ink:#F2EEE6; --muted:#C9CCD8; --faint:#A3A7B8;
  --paper:#F2EEE6; --paper-ink:#12131A; --paper-muted:#3E4152;
  --coral:#FF7A59; --sun:#FFC94A; --mint:#4FD1A5; --sky:#5AA9FF;
  --display:'Bricolage Grotesque','Trebuchet MS',sans-serif;
  --body:'Instrument Sans','Helvetica Neue',Arial,sans-serif;
  --mono:'JetBrains Mono','Courier New',monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0; background-color:var(--ground);
  background-image:radial-gradient(rgba(242,238,230,.07) 1px,transparent 1px);
  background-size:24px 24px;
  color:var(--ink); font-family:var(--body); font-size:18px; line-height:1.6;
  overflow-x:hidden;
}
a{color:var(--sun)} a:hover{color:#FFE08A}
a:focus-visible{outline:3px solid var(--sky);outline-offset:3px;border-radius:6px}
h1,h2,h3,p{margin:0}
.wrap{max-width:1240px;margin:0 auto;padding-left:32px;padding-right:32px}
.mono{font-family:var(--mono)}
.kicker{font-family:var(--mono);font-size:14px;letter-spacing:.08em;text-transform:uppercase}
.display{font-family:var(--display);font-weight:800;letter-spacing:-.03em}
.h2{font-size:clamp(40px,5vw,72px);line-height:1;text-wrap:balance}
.btn{display:inline-flex;align-items:center;min-height:56px;padding:0 28px;border-radius:12px;text-decoration:none;font-weight:600;font-size:18px}
.btn-primary{background:var(--sun);color:var(--paper-ink)}
.btn-primary:hover{background:#FFD873;color:var(--paper-ink)}
.btn-ghost{color:var(--ink);border:1.5px solid var(--line-strong);font-weight:500;padding:0 24px}
.btn-ghost:hover{color:var(--ink);border-color:var(--faint)}

/* Header */
.site-header{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding-top:28px;padding-bottom:28px}
.brand{display:flex;align-items:center;gap:14px;text-decoration:none;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand span{font-family:var(--display);font-weight:800;font-size:24px;letter-spacing:-.02em}
.nav{display:flex;align-items:center;gap:32px;flex-wrap:wrap;font-family:var(--mono);font-size:14px;letter-spacing:.06em;text-transform:uppercase}
.nav a{color:var(--muted);text-decoration:none}
.nav a:hover{color:var(--ink)}
.nav .nav-cta{display:flex;align-items:center;min-height:44px;padding:0 20px;background:var(--sun);color:var(--paper-ink);font-weight:600;border-radius:10px}
.nav .nav-cta:hover{background:#FFD873;color:var(--paper-ink)}

/* Hero */
.hero{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(480px,100%),1fr));gap:48px;align-items:center;padding-top:72px;padding-bottom:120px}
.hero-copy{display:flex;flex-direction:column;gap:28px}
.hero h1{font-size:clamp(48px,6.4vw,96px);line-height:.95;letter-spacing:-.035em;text-wrap:balance}
.hero-lede{max-width:34rem;font-size:20px;color:var(--muted);text-wrap:pretty}
.actions{display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.hero-art{display:flex;flex-direction:column;align-items:center;gap:8px}
.hero-art svg{width:100%;max-width:540px;height:auto}
.terminal{display:flex;flex-direction:column;gap:4px;padding:16px 22px;background:rgba(27,29,39,.9);border:1px solid var(--line);border-radius:12px;font-family:var(--mono);font-size:14px;color:var(--muted)}
.terminal .ok{color:var(--mint)}
.cursor{display:inline-block;width:8px;height:15px;margin-left:6px;background:var(--sun);vertical-align:-2px;animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
@media (prefers-reduced-motion:reduce){.cursor{animation:none}}

/* Codes (light band) */
.band{background:var(--paper);color:var(--paper-ink)}
.section{padding-top:120px;padding-bottom:120px;display:flex;flex-direction:column;gap:64px}
.split{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(420px,100%),1fr));gap:32px;align-items:end}
.band .split p{font-size:19px;color:var(--paper-muted);text-wrap:pretty}
.grid4{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr));gap:20px}
.code-card{display:flex;flex-direction:column;gap:16px;padding:32px;background:#fff;border:2px solid var(--paper-ink);border-radius:18px}
.code-card h3,.class-card h3{font-family:var(--display);font-weight:800;font-size:30px;letter-spacing:-.02em;line-height:1.15}
.code-card p{color:var(--paper-muted);font-size:17px}
.code-card.dark{background:var(--ground);color:var(--ink)}
.code-card.dark p{color:var(--muted)}

/* Classes */
.class-card{display:flex;flex-direction:column;gap:14px;padding:32px;background:var(--surface);border:1px solid var(--line);border-radius:18px}
.class-card p{color:var(--muted);font-size:17px}
.class-tag{display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:13px;letter-spacing:.08em;color:var(--faint)}
.swatch{width:14px;height:14px;border-radius:4px}
.section-head{display:flex;flex-direction:column;gap:16px;max-width:46rem}

/* Rules */
.rules{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.rules .inner{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(360px,100%),1fr));gap:64px;padding-top:120px;padding-bottom:120px}
.rule{display:grid;grid-template-columns:72px minmax(0,1fr);gap:20px;padding:28px 0;border-bottom:1px solid var(--line)}
.rule:last-child{border-bottom:0}
.rule .num{font-family:var(--display);font-weight:800;font-size:44px;line-height:1}
.rule h3{font-size:22px;font-weight:600;line-height:1.3;margin-bottom:6px}
.rule p{color:var(--muted);font-size:17px}

/* Join */
.join{display:flex;flex-direction:column;align-items:center;gap:32px;text-align:center;padding-top:140px;padding-bottom:140px}
.join h2{font-size:clamp(56px,8vw,112px);line-height:.95;letter-spacing:-.035em}
.join p{max-width:36rem;font-size:20px;color:var(--muted)}
.join .btn{min-height:60px;padding:0 32px;font-size:19px}

/* Footer */
.site-footer{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:32px;padding-bottom:32px;border-top:1px solid var(--line);font-family:var(--mono);font-size:13px;letter-spacing:.04em;color:var(--faint)}

@media (max-width:600px){
  .wrap{padding-left:20px;padding-right:20px}
  .nav{gap:18px}
  .hero{padding-top:40px;padding-bottom:80px}
  .section,.rules .inner{padding-top:80px;padding-bottom:80px}
  .join{padding-top:96px;padding-bottom:96px}
  .rule{grid-template-columns:52px minmax(0,1fr)}
}

/* Color helpers */
.kicker-mint{color:var(--mint)} .kicker-sun{color:var(--sun)} .kicker-sky{color:var(--sky)}
.swatch.coral{background:var(--coral)} .swatch.sun{background:var(--sun)}
.swatch.mint{background:var(--mint)} .swatch.sky{background:var(--sky)}
.coral-text{color:var(--coral)} .sun-text{color:var(--sun)}
.mint-text{color:var(--mint)} .sky-text{color:var(--sky)}