:root{
  --teal:#0f7a7a;
  --teal-d:#0e3a3a;
  --teal-l:#cfe6e6;
  --orange:#eb8c32;
  --orange-d:#c5701f;
  --ink:#21302f;
  --muted:#5a6b6b;
  --bg:#ffffff;
  --surface:#f3f8f8;
  --line:#dde9e9;
  color-scheme: only light;
}
*{box-sizing:border-box;}
html,body{overflow-x:hidden;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'Mulish',system-ui,sans-serif;
  font-size:17px;
  line-height:1.7;
}
h1,h2,h3,h4{font-family:'Outfit',system-ui,sans-serif;color:var(--teal-d);line-height:1.2;overflow-wrap:anywhere;}
h1{font-size:2.4rem;font-weight:800;letter-spacing:-.5px;}
h2{font-size:1.7rem;font-weight:700;margin-top:2.4rem;}
h3{font-size:1.2rem;font-weight:700;margin-top:1.6rem;}
a{color:var(--teal);}
img,svg{max-width:100%;height:auto;}
.wrap{max-width:880px;margin:0 auto;padding:0 22px;}

/* header */
.site-head{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:10;}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:14px;padding-bottom:14px;gap:14px;flex-wrap:wrap;}
.brand{display:flex;align-items:center;gap:10px;font-family:'Outfit',sans-serif;font-weight:800;color:var(--teal-d);text-decoration:none;font-size:1.15rem;}
.brand img{width:30px;height:30px;}
.nav{display:flex;gap:20px;flex-wrap:wrap;}
.nav a{color:var(--muted);text-decoration:none;font-weight:600;font-size:.97rem;}
.nav a:hover,.nav a[aria-current]{color:var(--teal);}

/* hero */
.hero{background:var(--surface);border-bottom:1px solid var(--line);}
.hero .wrap{padding-top:40px;padding-bottom:40px;}
.kicker{display:inline-block;background:var(--teal-l);color:var(--teal-d);font-weight:700;font-size:.78rem;letter-spacing:.6px;text-transform:uppercase;padding:5px 12px;border-radius:999px;margin-bottom:14px;}
.hero p.lead{font-size:1.18rem;color:var(--muted);max-width:62ch;}
.heroimg{margin-top:24px;border-radius:16px;overflow:hidden;border:1px solid var(--line);}
.heroimg img{display:block;width:100%;}

/* layout */
main .wrap{padding-top:38px;padding-bottom:48px;}
p{margin:.9rem 0;}
.answer{background:var(--surface);border-left:4px solid var(--teal);border-radius:0 12px 12px 0;padding:16px 20px;margin:22px 0;}
.answer strong{color:var(--teal-d);}

/* CTA */
.cta-btn{display:inline-block;background:var(--orange);color:#fff;font-family:'Outfit',sans-serif;font-weight:700;text-decoration:none;padding:12px 24px;border-radius:10px;border:0;transition:background .15s;}
.cta-btn:hover{background:var(--orange-d);color:#fff;}
.cta-row{margin:26px 0;}

/* bridge box */
.bridge{background:#fff;border:1px solid var(--line);border-left:4px solid var(--orange);border-radius:0 12px 12px 0;padding:18px 22px;margin:30px 0;}
.bridge h3{margin-top:0;color:var(--orange-d);}

/* table */
.tablewrap{overflow-x:auto;margin:22px 0;}
table{border-collapse:collapse;width:100%;min-width:480px;background:#fff;color:var(--ink);}
th,td{border:1px solid var(--line);padding:10px 13px;text-align:left;vertical-align:top;font-size:.96rem;}
th{background:var(--teal-l);color:var(--teal-d);font-family:'Outfit',sans-serif;}

/* diagram figure */
figure{margin:26px 0;}
figure svg,figure img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:14px;background:var(--surface);}
figcaption{color:var(--muted);font-size:.88rem;margin-top:8px;text-align:center;}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(0,1fr));gap:16px;margin:24px 0;}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 20px;}
.card h3{margin-top:0;}
.card p{margin:.4rem 0 0;color:var(--muted);font-size:.97rem;}

/* author */
.author{display:flex;gap:16px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:34px 0;}
.author img{width:64px;height:64px;border-radius:50%;object-fit:cover;flex:0 0 auto;}
.author .meta{font-size:.95rem;color:var(--muted);}
.author .meta strong{color:var(--teal-d);font-family:'Outfit',sans-serif;display:block;font-size:1.02rem;}

/* footer */
.site-foot{border-top:1px solid var(--line);background:var(--surface);color:var(--muted);font-size:.88rem;}
.site-foot .wrap{padding-top:26px;padding-bottom:30px;}
.site-foot a{color:var(--teal);}

ul.clean{padding-left:1.2rem;}
ul.clean li{margin:.4rem 0;}

@media (max-width:600px){
  h1{font-size:1.9rem;}
  h2{font-size:1.4rem;}
  body{font-size:16px;}
  .nav{gap:14px;}
}

/* re-assert light in case of dark-mode media flip */
@media (prefers-color-scheme:dark){
  body{background:var(--bg);color:var(--ink);}
  table,th,td{background:#fff;color:var(--ink);}
  th{background:var(--teal-l);color:var(--teal-d);}
  .card,.answer,.hero,.bridge,.author,.site-foot{color:var(--ink);}
  .bridge{background:#fff;}
}

/* header CTA button (slim) */
.nav .nav-cta{padding:8px 16px;font-size:.95rem;color:#fff;}
.nav .nav-cta:hover{color:#fff;}
@media (max-width:600px){.nav .nav-cta{margin-left:auto;}}