/* Brimm /learn — long-form editorial shell, built to BRAND.md (LANTERN / Machine's Eye).
   Bone/Ink/Red E03616, Bricolage Grotesque + Spline Sans Mono, self-hosted. */
@font-face{font-family:'Bricolage Grotesque';font-style:normal;font-weight:400 800;font-display:swap;src:url(/fonts/bricolagegrotesque-var-latin.woff2) format('woff2')}
@font-face{font-family:'Spline Sans Mono';font-style:normal;font-weight:400 600;font-display:swap;src:url(/fonts/splinesansmono-var-latin.woff2) format('woff2')}
:root{
  --bone:#FAFAF7;--ink:#0B0B0C;--ink2:#060607;--red:#E03616;--grey:#6E6E66;--hair:#DCDCD4;
  --red-text:#C42D10;
  --disp:"Bricolage Grotesque",system-ui,sans-serif;
  --mono:"Spline Sans Mono",ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bone);color:var(--ink);font:400 1.125rem/1.7 var(--disp);-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:var(--ink);color:var(--bone)}
a{color:inherit;text-decoration:none}
:focus-visible{outline:3px solid var(--red);outline-offset:3px}
.wrap{max-width:760px;margin:0 auto;padding:0 28px}

/* film grain: the handmade, not-AI tell */
body::after{content:"";position:fixed;inset:0;z-index:60;pointer-events:none;opacity:.04;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}

/* nav */
nav{position:sticky;top:0;z-index:50;display:flex;justify-content:space-between;align-items:center;
  padding:16px 28px;background:rgba(250,250,247,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--hair)}
.brand{font:800 1.3rem/1 var(--disp);letter-spacing:-.04em;display:flex;align-items:baseline}
.brand .bulb{width:8px;height:8px;border-radius:50%;background:var(--red);align-self:center;margin-left:6px;
  box-shadow:0 0 10px 2px rgba(224,54,22,.45);animation:bulbPulse 5s ease-in-out infinite}
@keyframes bulbPulse{0%,100%{box-shadow:0 0 8px 1px rgba(224,54,22,.35)}50%{box-shadow:0 0 16px 5px rgba(224,54,22,.65)}}
.navl{display:flex;gap:22px;font:500 .76rem var(--mono);letter-spacing:.08em;text-transform:uppercase}
.navl a{border-bottom:2px solid transparent;transition:border-color .15s;color:var(--ink)}
.navl a:hover{border-color:var(--red)}

/* article */
article{padding:64px 0 40px}
.kick{font:600 .76rem var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--red-text)}
.breadcrumb{font:500 .72rem var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--grey);margin-bottom:18px}
.breadcrumb a:hover{color:var(--ink)}
h1{font:800 clamp(2.4rem,6.5vw,4.4rem)/0.95 var(--disp);letter-spacing:-.045em;text-transform:uppercase;margin:14px 0 8px;max-width:18ch}
.byline{font:500 .74rem var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--grey);margin-bottom:30px}

/* the citable answer block — the lead */
.answer{border-left:4px solid var(--red);padding:6px 0 6px 22px;margin:6px 0 38px;
  font:500 clamp(1.2rem,2.2vw,1.5rem)/1.5 var(--disp);max-width:42ch}
.answer a{color:var(--red-text);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--red)}
.answer .q{font-style:normal}

article h2{font:800 clamp(1.6rem,3.4vw,2.4rem)/1.05 var(--disp);letter-spacing:-.035em;text-transform:uppercase;
  margin:52px 0 16px;max-width:22ch}
article h3{font:700 1.2rem/1.3 var(--disp);letter-spacing:-.02em;margin:32px 0 10px}
article p{margin:0 0 20px;max-width:66ch}
article p b,article li b{font-weight:800}
article a{color:var(--red-text);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--red)}
article ul{margin:0 0 22px;padding-left:0;list-style:none;max-width:66ch}
article li{position:relative;padding:8px 0 8px 26px}
article li::before{content:"";position:absolute;left:0;top:16px;width:8px;height:8px;background:var(--red)}

/* code / robots.txt blocks */
pre{background:var(--ink);color:var(--bone);font:500 .92rem/1.7 var(--mono);padding:22px 24px;margin:0 0 24px;
  overflow-x:auto;border-left:4px solid var(--red)}
pre .c{color:var(--grey)}
pre .ok{color:var(--bone)}
code{font:500 .92em var(--mono);background:#EFEDE6;padding:1px 6px;border-radius:2px;white-space:nowrap}

/* hub list descriptions */
article li .d{display:block;color:var(--grey);font-size:.95rem;margin-top:2px}
article li a{text-decoration-color:var(--red)}

/* pull quote */
blockquote{margin:30px 0;padding:0 0 0 22px;border-left:4px solid var(--ink);
  font:600 clamp(1.3rem,2.6vw,1.8rem)/1.35 var(--disp);letter-spacing:-.02em;max-width:24ch}

/* CTA band (dark room) */
.cta{background:var(--ink);color:var(--bone);margin-top:64px;padding:80px 0}
.cta h2{font:800 clamp(1.8rem,4vw,3rem)/1 var(--disp);letter-spacing:-.04em;text-transform:uppercase;color:var(--bone);margin:0 0 8px}
.cta p{color:#B9B9B0;max-width:48ch;margin:0 auto 26px}
.scan{display:flex;border:3px solid var(--bone);background:transparent;max-width:520px}
.scan input{flex:1;min-width:0;border:0;background:none;font:500 1rem var(--mono);padding:16px 16px;color:var(--bone)}
.scan input::placeholder{color:#6E6E66}
.scan input:focus{outline:none}
.scan button{border:0;background:var(--bone);color:var(--ink);font:600 .9rem var(--mono);letter-spacing:.1em;text-transform:uppercase;padding:0 26px;cursor:pointer;transition:background .15s,color .15s}
.scan button:hover{background:var(--red);color:var(--bone)}

/* related */
.related{padding:60px 0}
.related .kick{margin-bottom:18px}
.related a{display:block;padding:16px 0;border-top:1px solid var(--hair);font:700 1.15rem var(--disp);letter-spacing:-.02em;color:var(--ink)}
.related a:last-child{border-bottom:1px solid var(--hair)}
.related a:hover{color:var(--red-text)}

footer{background:var(--ink);color:var(--grey);padding:36px 0 60px;font:500 .74rem var(--mono);letter-spacing:.06em;text-transform:uppercase}
footer .frow{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
footer a{color:var(--grey)}
footer a:hover{color:var(--bone)}

@media(max-width:640px){nav{padding:12px 18px}.wrap{padding:0 20px}.navl{gap:14px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}