@font-face{font-family:"Space Grotesk";src:url(fonts/space-grotesk-latin-500-normal.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Space Grotesk";src:url(fonts/space-grotesk-latin-700-normal.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Inter";src:url(fonts/inter-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Inter";src:url(fonts/inter-latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}

:root{
  --navy:#0F1A2B; --navy-2:#16243A; --navy-3:#1E2F49; --line:#2A3C58;
  --amber:#F2A93B; --amber-dim:#C98A2C; --paper:#F4F1EA; --muted:#A9B4C4;
  --display:"Space Grotesk",system-ui,sans-serif; --body:"Inter",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--navy);color:var(--paper);font:400 17px/1.6 var(--body);-webkit-font-smoothing:antialiased}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}

/* header */
header.top{position:sticky;top:0;z-index:10;background:rgba(15,26,43,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font:700 18px/1 var(--display);letter-spacing:.04em}
.brand img{width:30px;height:30px}
nav.links{display:flex;gap:28px;font-size:15px}
nav.links a{text-decoration:none;color:var(--muted)}
nav.links a:hover{color:var(--paper)}
nav.links a{white-space:nowrap}
.brand{white-space:nowrap}


/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:10px;font:600 16px/1 var(--body);text-decoration:none;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn-amber{background:var(--amber);color:var(--navy)}
.btn-amber:hover{background:#f6b956}
.btn-ghost{border:1px solid var(--line);color:var(--paper)}
.btn-ghost:hover{border-color:var(--amber)}

/* hero */
.hero{padding:96px 0 80px;background:
  radial-gradient(900px 400px at 80% -10%,rgba(242,169,59,.12),transparent 60%),
  repeating-linear-gradient(115deg,transparent 0 140px,rgba(255,255,255,.025) 140px 141px)}
.eyebrow{font:600 13px/1 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--amber)}
h1{font:700 clamp(40px,6.4vw,72px)/1.04 var(--display);letter-spacing:-.02em;margin:18px 0 22px;max-width:15ch}
h1 em{font-style:normal;color:var(--amber)}
.lede{font-size:clamp(18px,2vw,21px);color:var(--muted);max-width:56ch}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

/* terminal motif */
.term{margin-top:56px;background:#0A1220;border:1px solid var(--line);border-radius:12px;overflow:hidden;max-width:720px;font:13.5px/1.7 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.term .bar{display:flex;gap:6px;padding:10px 14px;background:var(--navy-2);border-bottom:1px solid var(--line)}
.term .bar i{width:10px;height:10px;border-radius:50%;background:#33445f}
.term pre{padding:16px 18px;color:#cfd8e6;white-space:pre-wrap}
.term .ok{color:#7fd69a}.term .bad{color:#ff8a7a}.term .amb{color:var(--amber)}

/* sections */
section{padding:88px 0;border-top:1px solid var(--line)}
h2{font:700 clamp(30px,4vw,42px)/1.1 var(--display);letter-spacing:-.01em;margin:12px 0 14px}
.section-lede{color:var(--muted);max-width:60ch;margin-bottom:40px}

/* lessons */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px}
.card{background:var(--navy-2);border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column}
.card:hover{border-color:var(--amber-dim)}
.card a.thumb{display:block;aspect-ratio:16/9;overflow:hidden}
.card a.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.card:hover a.thumb img{transform:scale(1.03)}
.card .body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card .tag{font:600 12px/1 var(--body);letter-spacing:.12em;text-transform:uppercase;color:var(--amber)}
.card h3{font:700 20px/1.25 var(--display)}
.card p{color:var(--muted);font-size:15px}
.card .actions{margin-top:auto;display:flex;gap:16px;padding-top:8px;font-size:15px;font-weight:600}
.card .actions a{text-decoration:none;color:var(--amber)}
.card .actions a:hover{text-decoration:underline}
.more{margin-top:28px;color:var(--muted);font-size:15px}

/* method */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:22px;counter-reset:s}
.step{padding:26px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(180deg,var(--navy-2),var(--navy))}
.step::before{counter-increment:s;content:counter(s);display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--amber);color:var(--navy);font:700 16px/1 var(--display);margin-bottom:14px}
.step h3{font:700 19px/1.3 var(--display);margin-bottom:6px}
.step p{color:var(--muted);font-size:15px}

/* blueprint band */
.band{background:var(--navy-3);border:1px solid var(--line);border-radius:18px;padding:44px;display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center}
@media(max-width:820px){.band{grid-template-columns:1fr;padding:30px}}
.band ul{list-style:none;display:grid;gap:10px;color:var(--muted);font-size:15px}
.band li::before{content:"→ ";color:var(--amber)}

/* footer */
footer{border-top:1px solid var(--line);padding:40px 0 56px;color:var(--muted);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:18px 32px;justify-content:space-between}
footer nav{display:flex;flex-wrap:wrap;gap:22px}
footer a{text-decoration:none}
footer a:hover{color:var(--paper)}

/* legal pages */
.legal{padding:72px 0 96px;max-width:760px}
.legal h1{font-size:clamp(34px,5vw,48px);max-width:none}
.legal h2{font-size:24px;margin:40px 0 10px}
.legal p,.legal li{color:#d7dde7;margin-bottom:12px}
.legal ul{padding-left:22px}
.legal .note{border-left:3px solid var(--amber);padding:12px 16px;background:var(--navy-2);border-radius:6px;color:var(--muted);font-size:15px}
.ph{background:rgba(242,169,59,.18);color:var(--amber);padding:1px 6px;border-radius:4px}

@media(max-width:640px){
  nav.links .hide-sm{display:none} nav.links{gap:16px;font-size:14px}
  .brand{font-size:16px} .brand img{width:26px;height:26px}
  .term{font-size:11px} .term pre{white-space:pre;overflow-x:auto}
}