:root{
  --blue:#2f6bff;--blue-600:#1f57e6;--cyan:#28c8f0;--violet:#7b5cff;
  --ink:#0a1130;--ink-2:#232c52;--muted:#6b779c;--muted-2:#9aa4c4;
  --line:#e7ecf7;--line-2:#eef2fb;--surface:#f5f8ff;--card:#fff;
  --shadow-s:0 1px 2px rgba(10,17,48,.04),0 8px 20px -10px rgba(47,107,255,.14);
  --shadow-m:0 2px 6px rgba(10,17,48,.05),0 24px 48px -20px rgba(47,107,255,.22);
  --r:16px;--r-pill:999px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"Inter",system-ui,sans-serif;color:var(--ink);line-height:1.6;
  background:radial-gradient(60% 50% at 90% -6%,#e6efff 0,transparent 60%),var(--surface);
  -webkit-font-smoothing:antialiased;zoom:.92}
a{color:inherit;text-decoration:none}
.wrap{max-width:820px;margin:0 auto;padding:0 20px}
.display{font-family:"Sora",sans-serif}

/* nav */
nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-2)}
.nav-in{display:flex;align-items:center;gap:14px;height:60px;max-width:820px;margin:0 auto;padding:0 20px}
.logo{display:flex;align-items:center;gap:10px;font-family:"Sora";font-weight:700;font-size:17px;letter-spacing:-.02em}
.logo .mark{width:32px;height:32px;border-radius:10px;flex:none;overflow:hidden;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--blue),var(--violet) 120%);box-shadow:0 8px 18px -6px rgba(47,107,255,.5)}
.logo .mark img{width:100%;height:100%;object-fit:cover}
.nav-links{margin-left:auto;display:flex;align-items:center;gap:22px}
.nav-links a{font-size:14px;font-weight:500;color:var(--muted);transition:color .15s}
.nav-links a:hover,.nav-links a.on{color:var(--ink)}
.nav-cta{font-size:13.5px;font-weight:600;color:#fff!important;background:var(--blue);padding:8px 15px;border-radius:var(--r-pill)}
.nav-cta:hover{background:var(--blue-600)}

/* blog index */
.head{padding:52px 0 30px;text-align:center}
.kicker{font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--blue)}
.head h1{font-family:"Sora";font-weight:800;font-size:clamp(30px,6vw,44px);letter-spacing:-.03em;line-height:1.05;margin-top:10px}
.head p{color:var(--muted);margin-top:14px;font-size:16px;max-width:52ch;margin-inline:auto}
.cards{display:grid;gap:18px;grid-template-columns:1fr;padding-bottom:50px}
@media(min-width:640px){.cards{grid-template-columns:1fr 1fr}}
.pcard{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow-s);
  transition:transform .18s,box-shadow .18s,border-color .18s}
.pcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--line)}
.pcard .tag{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--blue);
  background:#eef4ff;padding:4px 10px;border-radius:var(--r-pill);margin-bottom:14px}
.pcard h2{font-family:"Sora";font-weight:700;font-size:19px;line-height:1.25;letter-spacing:-.01em}
.pcard p{color:var(--muted);font-size:14px;margin-top:9px}
.pcard .more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;color:var(--blue);font-weight:600;font-size:13.5px}

/* article */
.crumb{padding:26px 0 0;font-size:13px;color:var(--muted-2)}
.crumb a{color:var(--muted);font-weight:500}.crumb a:hover{color:var(--blue)}
article{padding:14px 0 40px}
article .tag{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--blue);
  background:#eef4ff;padding:4px 10px;border-radius:var(--r-pill)}
article h1{font-family:"Sora";font-weight:800;font-size:clamp(27px,5.4vw,40px);line-height:1.08;letter-spacing:-.02em;margin:14px 0 12px}
article .meta{color:var(--muted-2);font-size:13px;margin-bottom:26px}
article h2{font-family:"Sora";font-weight:700;font-size:22px;letter-spacing:-.01em;margin:32px 0 12px}
article h3{font-family:"Sora";font-weight:600;font-size:17px;margin:24px 0 8px}
article p{font-size:16px;line-height:1.75;color:var(--ink-2);margin-bottom:16px}
article ul,article ol{margin:0 0 16px;padding-left:22px}
article li{font-size:16px;line-height:1.7;color:var(--ink-2);margin-bottom:8px}
article b{color:var(--ink)}
article a.inl{color:var(--blue);font-weight:600}
.note{background:#fff8e8;border:1px solid #fde68a;border-radius:12px;padding:14px 16px;font-size:14.5px;color:#8a6408;margin:20px 0}

/* CTA */
.cta{margin:34px 0 10px;background:linear-gradient(135deg,#eef4ff,#e6f7ff);border:1px solid #d6e4ff;border-radius:var(--r);
  padding:24px;text-align:center}
.cta h3{font-family:"Sora";font-weight:700;font-size:19px;margin-bottom:6px}
.cta p{color:var(--muted);font-size:14px;margin-bottom:16px}
.cta a{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--blue),var(--blue-600));color:#fff;
  font-family:"Sora";font-weight:600;font-size:15px;padding:13px 24px;border-radius:var(--r-pill);
  box-shadow:0 10px 22px -8px rgba(47,107,255,.6)}

/* footer */
footer{background:#fff;border-top:1px solid var(--line);padding:34px 0;margin-top:24px}
.foot-in{max-width:820px;margin:0 auto;padding:0 20px;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center}
.foot-in .links{display:flex;gap:20px;flex-wrap:wrap}
.foot-in a{font-size:13.5px;color:var(--muted)}.foot-in a:hover{color:var(--blue)}
.foot-in .cp{font-size:12.5px;color:var(--muted-2)}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}