:root{
  --paper:#EEF1EF; --paper-card:#F6F7F4; --ink:#14181A; --ink-soft:#3D464A;
  --petrol:#143C42; --petrol-700:#0E2B30; --petrol-900:#081E22;
  --gold:#B07D2B; --gold-soft:#D9B873;
  --line:rgba(20,24,26,0.14); --line-light:rgba(255,255,255,0.16); --maxw:1080px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:'Archivo',system-ui,sans-serif;font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit}
::selection{background:var(--gold-soft);color:var(--petrol-900)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.display{font-family:'Fraunces',serif;font-weight:600;line-height:1.04;letter-spacing:-0.015em}
.mono{font-family:'JetBrains Mono',monospace}
.eyebrow{font-family:'JetBrains Mono',monospace;font-size:12px;font-weight:500;letter-spacing:0.18em;text-transform:uppercase;color:var(--gold)}

/* nav + footer */
.site-nav{position:sticky;top:0;z-index:50;background:rgba(238,241,239,0.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.site-nav .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{font-family:'Fraunces',serif;font-weight:600;font-size:19px;letter-spacing:-0.01em;text-decoration:none}
.brand span{color:var(--gold)}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{text-decoration:none;font-size:15px;transition:color .2s}
.nav-links a:not(.nav-cta):hover{color:var(--gold)}
@media(max-width:760px){.nav-links a:not(.nav-cta){display:none}}
.nav-cta{font-family:'JetBrains Mono',monospace;font-size:13px;font-weight:500;padding:9px 18px;border-radius:2px;background:var(--petrol);color:#fff!important;transition:background .2s,transform .2s}
.nav-cta:hover{background:var(--petrol-700);transform:translateY(-1px)}
.site-footer{border-top:1px solid var(--line);padding:38px 0;margin-top:80px}
.site-footer .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}
.site-footer .brand{font-size:17px}
.site-footer .meta{font-family:'JetBrains Mono',monospace;font-size:12.5px;color:var(--ink-soft)}

/* buttons */
.btn{font-family:'JetBrains Mono',monospace;font-size:14px;font-weight:500;text-decoration:none;padding:14px 26px;border-radius:2px;display:inline-flex;align-items:center;gap:9px;transition:transform .2s,background .2s,box-shadow .2s}
.btn-primary{background:var(--petrol);color:#fff}
.btn-primary:hover{background:var(--petrol-700);transform:translateY(-2px);box-shadow:0 10px 24px -12px rgba(20,60,66,.8)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--petrol);transform:translateY(-2px)}
.btn-gold{background:var(--gold);color:var(--petrol-900)}
.btn-gold:hover{background:var(--gold-soft);transform:translateY(-2px)}

/* real-world perspective */
.realworld{background:var(--petrol-900);color:#E7EEEC}
.rw-grid{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.realworld .eyebrow{color:#6FA8DC}
.realworld h2{font-size:clamp(1.9rem,3.8vw,2.8rem);color:#fff;margin:14px 0 20px;max-width:16ch;line-height:1.1}
.realworld > .wrap > .rw-grid > div > p{color:#A9BFBC;font-size:1.08rem;margin-bottom:28px;max-width:46ch}
.code-card{background:#0B1618;border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:22px;box-shadow:0 34px 64px -32px rgba(0,0,0,.7)}
.code-card .dots{display:flex;gap:8px;margin-bottom:18px}
.code-card .dots span{width:12px;height:12px;border-radius:50%}
.code-card .d-r{background:#ED6A5E}.code-card .d-y{background:#F4BF4F}.code-card .d-g{background:#61C554}
.code-card pre{font-family:'JetBrains Mono',monospace;font-size:14px;line-height:1.7;color:#D6E1DE;overflow-x:auto;margin-bottom:22px}
.code-card .c-k{color:#7AA2F7}
.code-card .c-f{color:var(--gold-soft)}
.rw-tags{display:flex;flex-wrap:wrap;gap:8px}
.rw-tags span{font-family:'JetBrains Mono',monospace;font-size:12px;padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);color:#C8DAD7}
@media(max-width:860px){.rw-grid{grid-template-columns:1fr;gap:34px}}

/* hero */
.hero{padding:86px 0 72px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:center}
.hero h1{font-size:clamp(2.5rem,5.4vw,4.1rem);margin:20px 0 26px}
.hero h1 em{font-style:italic;color:var(--petrol)}
.hero p.lede{font-size:1.18rem;color:var(--ink-soft);max-width:34ch}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}

.credential{background:var(--petrol);color:#EDF2F0;border-radius:6px;padding:34px 32px;position:relative;overflow:hidden;box-shadow:0 30px 60px -32px rgba(8,30,34,.7)}
.credential::after{content:"";position:absolute;inset:0;background:radial-gradient(120% 90% at 100% 0%,rgba(217,184,115,.18),transparent 55%)}
.credential .grade{font-family:'Fraunces',serif;font-weight:600;font-size:clamp(3.4rem,7vw,4.6rem);line-height:.9;color:var(--gold-soft);display:flex;align-items:baseline;gap:8px}
.credential .grade small{font-size:1.1rem;color:#9FB5B3;font-family:'JetBrains Mono',monospace;font-weight:400}
.credential .ribbon{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-soft);margin-bottom:20px;display:flex;align-items:center;gap:10px}
.credential .ribbon::before{content:"";width:22px;height:1px;background:var(--gold-soft)}
.credential h3{font-family:'Fraunces',serif;font-weight:500;font-size:1.32rem;margin:18px 0 8px;line-height:1.2}
.credential p{font-size:.95rem;color:#A9BFBC}
.cred-divider{height:1px;background:var(--line-light);margin:22px 0}
.cred-row{display:flex;justify-content:space-between;font-family:'JetBrains Mono',monospace;font-size:12.5px;color:#BCD0CD}
.cred-row span:last-child{color:#fff}
.cred-verify{display:inline-block;margin-top:20px;font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--gold-soft);text-decoration:underline;text-underline-offset:3px;transition:color .2s}
.cred-verify:hover{color:#fff}
.credential .cred-astars{margin-top:10px;font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--gold-soft);line-height:1.5}

section{padding:78px 0}
.sec-head{max-width:62ch;margin-bottom:46px}
.sec-head h2{font-size:clamp(1.9rem,3.6vw,2.7rem);margin:14px 0 16px}
.sec-head p{color:var(--ink-soft);font-size:1.06rem}

.niche{background:var(--paper-card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.tier{background:var(--paper);border:1px solid var(--line);border-radius:5px;padding:28px 26px;transition:transform .25s,box-shadow .25s,border-color .25s}
.tier:hover{transform:translateY(-4px);box-shadow:0 18px 40px -26px rgba(20,24,26,.5);border-color:var(--petrol)}
.tier .tag{font-family:'JetBrains Mono',monospace;font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--gold)}
.tier h3{font-family:'Fraunces',serif;font-weight:600;font-size:1.45rem;margin:12px 0 12px}
.tier p{font-size:.97rem;color:var(--ink-soft);margin-bottom:18px}
.codes{display:flex;flex-wrap:wrap;gap:7px}
.code{font-family:'JetBrains Mono',monospace;font-size:12px;font-weight:500;padding:5px 10px;border-radius:3px;background:rgba(20,60,66,.07);color:var(--petrol);border:1px solid rgba(20,60,66,.14)}
.tier.feature{background:var(--petrol);border-color:var(--petrol)}
.tier.feature .tag{color:var(--gold-soft)}
.tier.feature h3{color:#fff}
.tier.feature p{color:#A9BFBC}
.tier.feature .code{background:rgba(255,255,255,.08);color:var(--gold-soft);border-color:rgba(217,184,115,.3)}

.uni{background:var(--petrol);color:#E7EEEC;position:relative;overflow:hidden}
.uni::before{content:"";position:absolute;inset:0;background:radial-gradient(80% 120% at 0% 0%,rgba(217,184,115,.12),transparent 50%),radial-gradient(70% 100% at 100% 100%,rgba(20,60,66,.6),transparent 60%)}
.uni .wrap{position:relative}
.uni .eyebrow{color:var(--gold-soft)}
.uni h2{font-family:'Fraunces',serif;font-weight:600;font-size:clamp(2rem,4vw,3rem);color:#fff;margin:16px 0 24px;letter-spacing:-0.015em;max-width:20ch;line-height:1.08}
.uni-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.uni-scene{font-size:1.12rem;color:#BCD0CD;line-height:1.7}
.uni-scene em{color:var(--gold-soft);font-style:normal}
.uni-list{list-style:none;display:flex;flex-direction:column;gap:18px}
.uni-list li{display:flex;gap:14px;align-items:flex-start;font-size:1rem;color:#D6E1DE}
.uni-list .mark{font-family:'JetBrains Mono',monospace;color:var(--gold-soft);font-size:14px;flex-shrink:0;margin-top:2px}
.uni .btn-primary{background:var(--gold);color:var(--petrol-900);margin-top:6px}
.uni .btn-primary:hover{background:var(--gold-soft)}

.final{text-align:center;padding:96px 0}
.final h2{font-size:clamp(2.1rem,4.4vw,3.2rem);margin-bottom:18px;max-width:18ch;margin-left:auto;margin-right:auto}
.final p{color:var(--ink-soft);font-size:1.12rem;max-width:46ch;margin:0 auto 36px}
.final .hero-actions{justify-content:center}

/* blog list */
.blog-head{padding:70px 0 20px}
.blog-head h1{font-size:clamp(2.2rem,4.5vw,3.2rem)}
.blog-head p{color:var(--ink-soft);font-size:1.1rem;margin-top:12px;max-width:52ch}
.post-list{padding:30px 0 20px;display:flex;flex-direction:column;gap:4px}
.post-item{display:block;text-decoration:none;padding:26px 0;border-top:1px solid var(--line);transition:padding-left .2s}
.post-item:hover{padding-left:8px}
.post-item .p-meta{font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--gold);text-transform:uppercase;letter-spacing:.08em}
.post-item h2{font-family:'Fraunces',serif;font-weight:600;font-size:1.5rem;margin:8px 0 6px;color:var(--ink)}
.post-item p{color:var(--ink-soft);font-size:1rem}

/* article */
.article{max-width:720px;margin:0 auto;padding:60px 28px 20px}
.article .a-meta{font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--gold);text-transform:uppercase;letter-spacing:.08em;margin-bottom:16px}
.article h1{font-family:'Fraunces',serif;font-weight:600;font-size:clamp(2rem,4vw,2.8rem);line-height:1.1;margin-bottom:26px;letter-spacing:-0.015em}
.prose{font-size:1.08rem;line-height:1.75}
.prose h2{font-family:'Fraunces',serif;font-weight:600;font-size:1.6rem;margin:38px 0 14px}
.prose h3{font-family:'Fraunces',serif;font-weight:600;font-size:1.3rem;margin:28px 0 12px}
.prose p{margin:0 0 18px}
.prose ul,.prose ol{margin:0 0 18px 22px}
.prose li{margin-bottom:8px}
.prose code{font-family:'JetBrains Mono',monospace;font-size:.9em;background:rgba(20,60,66,.08);padding:2px 6px;border-radius:3px}
.prose pre{background:var(--petrol-900);color:#e7eeec;padding:18px;border-radius:6px;overflow-x:auto;margin:0 0 20px}
.prose pre code{background:none;padding:0;color:inherit}
.prose blockquote{border-left:3px solid var(--gold);padding-left:16px;color:var(--ink-soft);margin:0 0 18px}
.prose a{color:var(--petrol);text-decoration:underline}
.article-cta{margin-top:44px;padding:28px;background:var(--paper-card);border:1px solid var(--line);border-radius:8px;text-align:center}
.article-cta p{margin-bottom:18px;font-weight:600}

@media(max-width:860px){
  .hero-grid,.tiers,.uni-grid{grid-template-columns:1fr;gap:34px}
  .hero{padding:54px 0 40px}
  section{padding:56px 0}
  .nav-links{gap:14px}
}

/* about strip */
.about{background:var(--paper-card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.about-grid{display:grid;grid-template-columns:260px 1fr;gap:48px;align-items:center}
.about-photo{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:12px;box-shadow:0 24px 50px -26px rgba(8,30,34,.55);border:1px solid var(--line)}
.about h2{font-size:clamp(1.7rem,3.4vw,2.4rem);margin:12px 0 16px}
.about p{color:var(--ink-soft);font-size:1.06rem;margin-bottom:14px}
.about .creds{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.about .cred-chip{font-family:'JetBrains Mono',monospace;font-size:12px;font-weight:500;padding:7px 12px;border-radius:3px;background:var(--paper);border:1px solid var(--line);color:var(--petrol)}

/* how i teach */
.how-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.how-card{background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:28px 26px}
.how-card .n{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--gold);letter-spacing:.1em}
.how-card h3{font-family:'Fraunces',serif;font-weight:600;font-size:1.3rem;margin:10px 0 10px}
.how-card p{color:var(--ink-soft);font-size:.99rem}
@media(max-width:860px){.how-grid{grid-template-columns:1fr}}

/* universities strip */.unis{padding:52px 0;text-align:center}
.unis .label{font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:26px}
.uni-grid-badges{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.uni-item{display:flex;align-items:center;gap:11px;background:var(--paper-card);border:1px solid var(--line);border-radius:999px;padding:7px 20px 7px 7px;transition:transform .2s,box-shadow .2s,border-color .2s}
.uni-item:hover{transform:translateY(-2px);box-shadow:0 12px 26px -18px rgba(20,60,66,.6);border-color:var(--petrol)}
.uni-mono{width:40px;height:40px;flex-shrink:0;border-radius:50%;background:var(--petrol);color:var(--gold-soft);font-family:'JetBrains Mono',monospace;font-weight:600;font-size:12px;display:flex;align-items:center;justify-content:center;letter-spacing:.02em}
.uni-name{font-family:'Fraunces',serif;font-weight:500;font-size:1.05rem;color:var(--ink);white-space:nowrap}
@media(max-width:600px){.uni-name{font-size:.95rem}}

/* testimonials */.testimonials .sec-head{text-align:center;margin-left:auto;margin-right:auto}
.tgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.tcard{background:var(--paper-card);border:1px solid var(--line);border-radius:8px;padding:26px 24px;display:flex;flex-direction:column;gap:12px}
.tcard .stars{color:var(--gold);letter-spacing:2px;font-size:15px}
.tcard blockquote{font-size:1.05rem;line-height:1.6;color:var(--ink);font-style:italic}
.tcard .who{font-family:'JetBrains Mono',monospace;font-size:12.5px;color:var(--ink-soft);margin-top:auto}
.tcard .who strong{color:var(--petrol);font-style:normal}
.tcard .src{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--gold)}
@media(max-width:860px){
  .about-grid{grid-template-columns:1fr;gap:26px;text-align:center;justify-items:center}
  .about-photo{max-width:220px}
  .about .creds{justify-content:center}
  .tgrid{grid-template-columns:1fr}
}