/* ThinkMath Blog — ana sitenin renk/yazı diliyle aynı tokenlar */
:root{--p950:#08222A;--p900:#0D2C34;--p800:#184550;--p600:#2A5D6B;--p200:#A8C2C9;--p100:#DCE8EB;--p50:#EFF4F5;
  --paper:#F5F6FA;--white:#fff;--amber:#F0B429;--amber-soft:#FCF3DE;--ink:#0F252B;--muted:#5F757C;--line:#E2E8EB;
  --sans:"Archivo",system-ui,-apple-system,"Segoe UI",sans-serif;--mono:"JetBrains Mono",ui-monospace,monospace;--script:"Yellowtail",cursive;
  --r:14px;--r-lg:24px;--wrap:760px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--p800)}
.hdr{background:var(--p900);color:#fff;border-bottom:3px solid var(--amber)}
.hdr .in{max-width:1200px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{color:#fff;text-decoration:none;font-weight:800;letter-spacing:.02em;font-size:1.05rem}
.brand span{font-family:var(--script);font-weight:400;color:var(--amber);font-size:1.15rem;margin-left:6px}
.hdr nav{display:flex;gap:18px;flex-wrap:wrap}
.hdr nav a{color:#D5E3E7;text-decoration:none;font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase}
.hdr nav a:hover,.hdr nav a[aria-current]{color:#fff;border-bottom:2px solid var(--amber)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:48px 24px 80px}
.tag{font-family:var(--mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--p600);margin:0 0 10px}
h1{font-size:clamp(1.9rem,4vw,2.6rem);line-height:1.15;letter-spacing:-.02em;margin:0 0 12px;color:var(--p900)}
.meta{color:var(--muted);font-size:.9rem;margin:0 0 32px;font-family:var(--mono)}
article h2{font-size:1.45rem;margin:40px 0 10px;color:var(--p900);letter-spacing:-.01em}
article p{margin:0 0 16px;font-size:1.05rem}
article ul{padding-left:22px;margin:0 0 16px}article li{margin:6px 0}
article strong{color:var(--p900)}
.quote{background:var(--white);border-left:4px solid var(--amber);border-radius:var(--r);padding:18px 22px;margin:28px 0;font-weight:600;color:var(--p900);box-shadow:0 1px 2px rgba(8,34,42,.05),0 18px 40px -18px rgba(8,34,42,.15)}
.cta{margin-top:56px;background:var(--p800);color:#fff;border-radius:var(--r-lg);padding:32px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.cta h3{margin:0 0 6px;font-size:1.25rem}.cta p{margin:0;color:#C7D3D8}
.btn{display:inline-block;background:var(--amber);color:var(--p950);font-weight:700;text-decoration:none;padding:13px 22px;border-radius:999px;white-space:nowrap}
.list{display:grid;gap:18px;margin-top:8px}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 26px;text-decoration:none;color:var(--ink);box-shadow:0 1px 2px rgba(8,34,42,.05)}
.card:hover{border-color:var(--p200)}.card h2{margin:6px 0 8px;font-size:1.3rem;color:var(--p900)}.card p{margin:0;color:var(--muted)}
footer{border-top:1px solid var(--line);padding:24px;text-align:center;color:var(--muted);font-size:.85rem}
@media(max-width:600px){.hdr .in{flex-direction:column;align-items:flex-start}}