:root{
  --bg:#faf9f7; --surface:#ffffff; --ink:#17171a; --muted:#5b5b63; --line:#e7e3dc;
  --accent:#4f46e5; --accent-2:#4338ca; --accent-soft:#eef2ff;
  --radius:16px; --shadow:0 10px 40px rgba(23,23,26,.07); --maxw:920px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Be Vietnam Pro",system-ui,-apple-system,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
h1,h2,h3{line-height:1.18;letter-spacing:-.02em;margin:0 0 .5em;font-weight:800}
h1{font-size:clamp(2.1rem,5.5vw,3.6rem)}
h2{font-size:clamp(1.5rem,3.2vw,2.1rem)}
p{margin:0 0 1em}
a{color:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.muted{color:var(--muted)}

.btn{display:inline-flex;align-items:center;gap:.5em;padding:.8em 1.4em;border-radius:999px;
  font-weight:600;font-size:1rem;text-decoration:none;border:1px solid transparent;cursor:pointer;
  transition:transform .12s ease,box-shadow .12s ease}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 22px rgba(79,70,229,.28)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--accent)}

/* Nav */
header.nav{position:sticky;top:0;z-index:50;background:rgba(250,249,247,.85);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:800;text-decoration:none;color:var(--ink);letter-spacing:-.02em;font-size:1.05rem}
.brand b{color:var(--accent)}
.nav-links{display:flex;gap:24px;align-items:center}
.nav-links a{text-decoration:none;color:var(--muted);font-size:.95rem;font-weight:500}
.nav-links a:hover{color:var(--ink)}
@media(max-width:720px){.nav-links a:not(.nav-cta){display:none}}

/* Hero */
.hero{padding:84px 0 60px}
.eyebrow{display:inline-block;text-transform:uppercase;letter-spacing:.16em;font-size:.78rem;
  font-weight:700;color:var(--accent);background:var(--accent-soft);padding:.4em 1em;border-radius:999px;margin-bottom:22px}
.hero h1{max-width:16ch}
.hero-sub{font-size:1.22rem;color:var(--muted);max-width:56ch;margin:0 0 28px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:18px}
.hero-note{font-size:.92rem;color:var(--muted);display:flex;align-items:center;gap:.5em}
.dot{width:8px;height:8px;border-radius:50%;background:#22a06b;box-shadow:0 0 0 4px rgba(34,160,107,.16)}

section{padding:56px 0}
.section-head{margin-bottom:34px}
.section-head h2{margin-bottom:.2em}
.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* Pillars */
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:1fr 1fr}
.grid-3{grid-template-columns:repeat(3,1fr)}
@media(max-width:760px){.grid-2,.grid-3{grid-template-columns:1fr}}
.pillar{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.alt .pillar{background:var(--bg)}
.pillar .k{font-size:.8rem;font-weight:700;color:var(--accent);letter-spacing:.04em;margin-bottom:8px}
.pillar h3{font-size:1.12rem;margin-bottom:.3em}
.pillar p{font-size:.95rem;color:var(--muted);margin:0}

/* Writing list */
.post{display:block;text-decoration:none;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .12s ease,border-color .12s}
.post:hover{transform:translateY(-3px);border-color:var(--accent)}
.post .tag{display:inline-block;font-size:.75rem;font-weight:700;color:var(--accent);
  background:var(--accent-soft);padding:.25em .8em;border-radius:999px;margin-bottom:12px}
.post .tag.soon{color:#9a6b00;background:#fff6e0}
.post h3{font-size:1.18rem;margin-bottom:.35em}
.post p{font-size:.95rem;color:var(--muted);margin:0}

/* Proof */
.proof{display:flex;gap:18px;flex-wrap:wrap}
.proof .card{flex:1;min-width:240px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.proof .card h3{font-size:1.1rem}
.proof .card p{font-size:.95rem;color:var(--muted)}
.proof .links{margin-top:14px;display:flex;gap:14px;flex-wrap:wrap}
.proof .links a{color:var(--accent);font-weight:600;text-decoration:none;font-size:.95rem}

/* Newsletter */
.news{background:linear-gradient(135deg,#1e1b4b,#312e81);color:#fff;border-radius:24px;padding:48px 38px;text-align:center}
.news h2{color:#fff}
.news p{color:rgba(255,255,255,.82);max-width:48ch;margin:0 auto 24px}
.news form{display:flex;gap:10px;max-width:440px;margin:0 auto;flex-wrap:wrap}
.news input{flex:1;min-width:200px;border:none;border-radius:999px;padding:.85em 1.3em;font-size:1rem;font-family:inherit;outline:none}
.news .btn-primary{background:#fff;color:var(--accent-2)}
.news .ok{color:#c7f9e6;font-weight:600;margin-top:14px;min-height:1.2em}

/* Footer */
footer{padding:46px 0 34px;border-top:1px solid var(--line);margin-top:30px}
footer .cols{display:flex;justify-content:space-between;flex-wrap:wrap;gap:22px;margin-bottom:22px}
footer a{color:var(--ink);text-decoration:none}
footer a:hover{color:var(--accent)}
footer small{color:var(--muted)}
.about{max-width:60ch}
.about p{font-size:1.05rem}

/* Article / prose */
.article{padding:48px 0}
.article .wrap{max-width:720px}
.article .back{display:inline-block;color:var(--accent);text-decoration:none;font-weight:600;font-size:.92rem;margin-bottom:20px}
.article .tag{display:inline-block;font-size:.78rem;font-weight:700;color:var(--accent);background:var(--accent-soft);padding:.3em .9em;border-radius:999px;margin-bottom:14px}
.article h1{font-size:clamp(1.9rem,4.5vw,2.8rem);margin-bottom:.2em}
.article .meta{font-size:.9rem;margin-bottom:30px}
.prose{font-size:1.08rem;color:#2a2a30}
.prose h2{font-size:1.5rem;margin:1.6em 0 .5em}
.prose h3{font-size:1.2rem;margin:1.4em 0 .4em}
.prose p{margin:0 0 1.1em}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.3em}
.prose li{margin:.3em 0}
.prose a{color:var(--accent);text-decoration:underline}
.prose code{background:#f1efe9;padding:.15em .4em;border-radius:6px;font-size:.9em}
.prose pre{background:#1e1b2e;color:#e8e6f0;padding:18px;border-radius:12px;overflow-x:auto;font-size:.9rem;line-height:1.5}
.prose pre code{background:none;padding:0;color:inherit}
.prose blockquote{border-left:4px solid var(--accent);background:var(--accent-soft);margin:1.2em 0;padding:14px 20px;border-radius:0 10px 10px 0;color:#3a3a44}
.prose hr{border:none;border-top:1px solid var(--line);margin:2em 0}
.prose img{max-width:100%;border-radius:12px}