:root{
  --deep:#07383f;
  --deep-2:#0a4a53;
  --teal:#0e8a98;
  --teal-ink:#0a6b77;
  --amber:#f2a93b;
  --amber-ink:#8a4f00;
  --ink:#0e2a30;
  --muted:#42565b;
  --bg:#f4f8f8;
  --bg-alt:#e8f0f1;
  --surface:#ffffff;
  --line:#cfdcde;
  --on-deep:#e6f2f3;
  --on-deep-muted:#a9c6ca;
  --serif:"Fraunces",Georgia,"Times New Roman",serif;
  --sans:"Public Sans",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --wrap:1120px;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#071e22;
    --bg-alt:#0b2a30;
    --surface:#0f343b;
    --ink:#e8f3f4;
    --muted:#a7c0c4;
    --line:#1d4750;
    --teal-ink:#5cc6d3;
    --amber-ink:#f2b95c;
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:1.0625rem;line-height:1.6;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%}
a{color:var(--teal-ink);text-underline-offset:3px}
a:hover{color:var(--ink)}
:focus-visible{outline:3px solid var(--amber);outline-offset:3px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:8px;background:var(--amber);color:#1b1200;padding:8px 14px;border-radius:6px;z-index:100}
.skip:focus{left:8px}
h1,h2,h3{font-family:var(--serif);line-height:1.15;margin:0;letter-spacing:-.01em}
h2{font-size:clamp(1.6rem,3vw,2.1rem);font-weight:600}
h3{font-size:1.2rem;font-weight:600}
p{margin:0}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:var(--deep);color:var(--on-deep);border-bottom:1px solid rgba(255,255,255,.08)}
.bar{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:16px}
.logo{font-family:var(--serif);font-weight:700;font-size:1.3rem;color:#fff;text-decoration:none;letter-spacing:-.01em}
.logo span{color:#7fd3dd}
.nav{display:flex;align-items:center;gap:4px}
.nav a,.nav summary{color:var(--on-deep);text-decoration:none;padding:10px 12px;border-radius:8px;font-size:.95rem;font-weight:500;cursor:pointer;list-style:none;display:inline-block}
.nav summary::-webkit-details-marker{display:none}
.nav a:hover,.nav summary:hover{background:rgba(255,255,255,.1);color:#fff}
.nav a[aria-current="page"]{background:rgba(255,255,255,.14);color:#fff}
.nav summary::after{content:"";display:inline-block;width:6px;height:6px;margin-left:8px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:translateY(-3px) rotate(45deg)}
.nav .btn-nav{background:var(--amber);color:#1b1200;font-weight:600;margin-left:6px}
.nav .btn-nav:hover{background:#ffc15e;color:#1b1200}
.dd{position:relative}
.dd-panel{position:absolute;top:calc(100% + 6px);left:0;min-width:210px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:6px;box-shadow:0 12px 30px rgba(0,0,0,.25)}
.dd-panel a{display:block;color:var(--ink);padding:10px 12px}
.dd-panel a:hover{background:var(--bg-alt);color:var(--ink)}
.search-link{display:inline-flex;align-items:center;gap:6px}
.search-link svg{width:18px;height:18px}
.menu-btn{display:none;background:transparent;border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:8px;padding:8px 14px;font:inherit;font-weight:500;cursor:pointer}

/* Hero */
.hero{background:linear-gradient(180deg,var(--deep) 0%,var(--deep-2) 100%);color:#fff;position:relative;overflow:hidden;padding:72px 0 0}
.hero-inner{position:relative;z-index:2;padding-bottom:36px}
.hero h1{font-size:clamp(2.2rem,5.6vw,3.7rem);font-weight:600;max-width:17ch}
.hero .lede{color:var(--on-deep);max-width:56ch;margin-top:18px;font-size:1.15rem}
.search{display:flex;gap:10px;margin-top:30px;max-width:640px}
.search input{flex:1;min-width:0;padding:15px 18px;border-radius:10px;border:2px solid transparent;font:inherit;background:#fff;color:#0e2a30}
.search input::placeholder{color:#5b6f73}
.search input:focus{outline:none;border-color:var(--amber)}
.btn{display:inline-block;border:0;border-radius:10px;padding:14px 22px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;text-align:center}
.btn-amber{background:var(--amber);color:#1b1200}
.btn-amber:hover{background:#ffc15e;color:#1b1200}
.btn-teal{background:var(--teal);color:#fff}
.btn-teal:hover{background:var(--teal-ink);color:#fff}
.quick{display:flex;flex-wrap:wrap;gap:8px 10px;margin-top:18px;align-items:center;color:var(--on-deep-muted);font-size:.95rem}
.quick a{color:#fff;text-decoration:none;border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:5px 14px}
.quick a:hover{background:rgba(255,255,255,.12)}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px;padding-top:24px;border-top:1px solid rgba(255,255,255,.16);max-width:860px}
.facts strong{display:block;font-family:var(--serif);font-size:1.9rem;font-weight:600;line-height:1.1;color:#fff}
.facts span{display:block;margin-top:6px;color:var(--on-deep-muted);font-size:.95rem;line-height:1.4}
.trace{display:block;width:100%;height:auto;margin-top:-6px;position:relative;z-index:1}
.trace path{fill:none;stroke:var(--amber);stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1;stroke-dashoffset:0}
@media (prefers-reduced-motion:no-preference){
  .trace path{animation:draw 3.2s ease-out 0.2s both}
  @keyframes draw{from{stroke-dashoffset:1}to{stroke-dashoffset:0}}
}

/* Sections */
section{padding:72px 0}
.alt{background:var(--bg-alt)}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:28px;flex-wrap:wrap}
.sec-head p{color:var(--muted);max-width:52ch}

/* Start here: one panel, four cells */
.start{display:grid;grid-template-columns:repeat(4,1fr);background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.start a{display:block;padding:26px 24px 28px;text-decoration:none;color:var(--ink);border-right:1px solid var(--line);transition:background .15s}
.start a:last-child{border-right:0}
.start a:hover{background:var(--bg-alt)}
.start svg{width:34px;height:34px;color:var(--teal-ink);margin-bottom:16px}
.start h3{margin-bottom:8px}
.start p{color:var(--muted);font-size:.98rem;line-height:1.55}

/* Articles */
.articles{display:grid;grid-template-columns:1.35fr 1fr;gap:20px}
.stack{display:grid;gap:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:26px;display:flex;flex-direction:column;gap:12px;text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--teal);color:var(--ink)}
.card h3{font-size:1.25rem}
.card p{color:var(--muted);font-size:.98rem}
.card time{color:var(--muted);font-size:.9rem}
.lead{background:var(--deep);color:#fff;border-color:var(--deep);padding:34px;justify-content:flex-end;min-height:360px;position:relative;overflow:hidden}
.lead:hover{color:#fff;border-color:var(--amber)}
.lead h3{font-size:clamp(1.6rem,3vw,2.15rem);max-width:20ch}
.lead p,.lead time{color:var(--on-deep)}
.lead::before{content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;border:1px solid rgba(255,255,255,.14);box-shadow:0 0 0 36px rgba(255,255,255,.03),0 0 0 72px rgba(255,255,255,.02)}
.tag{align-self:flex-start;font-size:.85rem;font-weight:600;padding:4px 12px;border-radius:999px;background:#d9eef1;color:#064a54}
.tag.research{background:#fbe7c2;color:#6b3b00}
.lead .tag{background:var(--amber);color:#1b1200}
.more{margin-top:26px;display:inline-block;font-weight:600}

/* Exams + research */
.two{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.two > div > p{color:var(--muted);margin:14px 0 22px;max-width:50ch}
.routes{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.routes li{border-bottom:1px solid var(--line)}
.routes a{display:flex;justify-content:space-between;align-items:center;padding:16px 4px;text-decoration:none;color:var(--ink);font-weight:600}
.routes a:hover{color:var(--teal-ink);background:var(--bg-alt)}
.routes a::after{content:"";width:9px;height:9px;border-right:2px solid var(--teal-ink);border-top:2px solid var(--teal-ink);transform:rotate(45deg);margin-right:6px}

/* About */
.about{display:grid;grid-template-columns:auto 1fr;gap:36px;align-items:center;max-width:860px}
.avatar{width:132px;height:132px;border-radius:50%;background:var(--deep);color:#fff;display:grid;place-items:center;font-family:var(--serif);font-size:2.4rem;font-weight:600;border:4px solid var(--amber)}
.about h2{margin-bottom:12px}
.about p{color:var(--muted);max-width:60ch}
.about .who{color:var(--ink);font-weight:600;margin-top:14px}
.about .btn{margin-top:20px}

/* Footer */
footer{background:var(--deep);color:var(--on-deep);padding:56px 0 28px}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
footer .logo{display:inline-block;margin-bottom:10px}
footer p{color:var(--on-deep-muted);max-width:38ch}
footer h3{font-family:var(--sans);font-size:1rem;font-weight:600;color:#fff;margin-bottom:12px}
.cols{columns:2;column-gap:28px;list-style:none;margin:0;padding:0}
.cols li{break-inside:avoid;margin-bottom:8px}
footer a{color:var(--on-deep);text-decoration:none}
footer a:hover{color:#fff;text-decoration:underline}
.signup{margin-top:20px;display:flex;gap:8px;max-width:380px}
.signup input{flex:1;min-width:0;padding:11px 14px;border-radius:8px;border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.08);color:#fff;font:inherit}
.signup input::placeholder{color:#a9c6ca}
.signup .btn{padding:11px 16px}
.legal{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);font-size:.9rem;color:var(--on-deep-muted)}

/* Responsive */
@media (max-width:960px){
  .menu-btn{display:inline-block}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--deep);flex-direction:column;align-items:stretch;padding:10px 20px 20px;border-bottom:1px solid rgba(255,255,255,.12);gap:2px}
  .nav.open{display:flex}
  .nav a,.nav summary{padding:13px 12px;font-size:1rem}
  .dd-panel{position:static;box-shadow:none;background:rgba(255,255,255,.06);border:0;margin:2px 0 6px}
  .dd-panel a{color:var(--on-deep)}
  .dd-panel a:hover{background:rgba(255,255,255,.1);color:#fff}
  .nav .btn-nav{margin:8px 0 0;text-align:center}
  .start{grid-template-columns:1fr 1fr}
  .start a:nth-child(2){border-right:0}
  .start a:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .articles{grid-template-columns:1fr}
  .lead{min-height:280px}
  .two{grid-template-columns:1fr;gap:44px}
  .foot{grid-template-columns:1fr 1fr}
  .foot > div:first-child{grid-column:1 / -1}
}
@media (max-width:600px){
  section{padding:52px 0}
  .hero{padding-top:48px}
  .search{flex-direction:column}
  .facts{grid-template-columns:1fr;gap:18px}
  .start{grid-template-columns:1fr}
  .start a{border-right:0;border-bottom:1px solid var(--line)}
  .start a:last-child{border-bottom:0}
  .about{grid-template-columns:1fr;gap:20px}
  .foot{grid-template-columns:1fr}
  .signup{flex-direction:column}
}


/* ===== Inner pages (shared shell, same design language) ===== */
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:absolute;left:-999px;top:8px;background:var(--amber);color:#1b1200;padding:8px 14px;border-radius:6px;z-index:100}
.skip-link:focus{left:8px}
section.section{padding:72px 0}
.section-alt{background:var(--bg-alt)}
.breadcrumb{max-width:72ch;margin:0 auto;padding:28px 20px 0;font-size:.9rem;color:var(--muted)}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:var(--line)}
.breadcrumb a{color:var(--teal-ink);text-decoration:none}
.breadcrumb a:hover{color:var(--ink)}
.prose{max-width:72ch;margin:0 auto;padding:32px 20px 72px}
.prose h1{font-size:clamp(1.9rem,4vw,2.7rem);font-weight:600;margin:0 0 14px}
.prose h2{font-size:clamp(1.4rem,2.6vw,1.8rem);margin:36px 0 12px}
.prose h3{margin:26px 0 10px}
.prose p{margin:14px 0}
.prose ul{padding-left:22px;margin:14px 0}
.prose li{margin:8px 0}
.byline{display:flex;flex-wrap:wrap;gap:10px;align-items:center;color:var(--muted);font-size:.9rem;border-bottom:1px solid var(--line);padding-bottom:16px;margin:0 0 26px}
.byline .tag{margin:0}
.demo-banner{max-width:72ch;margin:20px auto 0;padding:12px 18px;background:#fbe7c2;border:1px solid #e3c98f;border-left:4px solid var(--amber);border-radius:10px;font-size:.92rem;color:#6b3b00}
.demo-banner strong{color:#1b1200}
.post-group{max-width:72ch;margin:0 auto;padding:8px 20px 72px}
.post-group h2{margin:26px 0 14px}
.post-list{list-style:none;margin:0;padding:0}
.post-row{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px 24px;margin-bottom:14px;transition:border-color .15s}
.post-row:hover{border-color:var(--teal)}
.post-row a{font-family:var(--serif);font-weight:600;font-size:1.15rem;color:var(--ink);text-decoration:none}
.post-row a:hover{color:var(--teal-ink)}
.post-row .post-meta{display:block;color:var(--muted);font-size:.88rem;margin:4px 0}
.post-row p{margin:4px 0 0;color:var(--muted);font-size:.98rem}
.card-grid{max-width:var(--wrap);margin:0 auto;padding:8px 20px 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}
.cat-grid{margin-bottom:64px}
.more-link{max-width:72ch;margin:18px auto 0;padding:0 20px;font-weight:600}
.more-link a{font-weight:600}
.button{display:inline-block;background:var(--teal);color:#fff;padding:12px 20px;border-radius:10px;text-decoration:none;font-weight:600;border:0;cursor:pointer;font:inherit}
.button:hover{background:var(--teal-ink);color:#fff}
.related{max-width:72ch;margin:0 auto;padding:0 20px 72px}
.related h2{margin:0 0 12px}
.related ul{padding-left:20px;margin:0}
.related li{margin:8px 0}
.search-wrap{max-width:72ch;margin:0 auto}
.search-form{display:flex;gap:10px;margin:24px 0}
.search-form input{flex:1;min-width:0;padding:15px 18px;border-radius:10px;border:2px solid transparent;font:inherit;background:var(--surface);color:var(--ink)}
.search-form input::placeholder{color:#5b6f73}
.search-form input:focus{outline:none;border-color:var(--amber)}
.search-form button{background:var(--teal);color:#fff;border:0;border-radius:10px;padding:14px 22px;font:inherit;font-weight:600;cursor:pointer}
.search-form button:hover{background:var(--teal-ink)}
#results .post-list{margin-top:8px}
@media (max-width:600px){
  .breadcrumb{padding-top:20px}
  .prose{padding:24px 20px 56px}
  .post-group{padding:8px 20px 56px}
}