:root{--bg:#fff;--soft:#f8fafc;--text:#0f172a;--muted:#475569;--line:#e2e8f0;--brand:#2563eb;--brand2:#8b5cf6;--radius:22px;--max:1200px;--shadow:0 10px 30px rgba(15,23,42,.06)}
*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--text);background:#fff;line-height:1.65}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 24px}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;justify-content:space-between;align-items:center;min-height:78px;gap:20px}
.brand{display:flex;align-items:center;gap:14px;color:var(--text);font-weight:800}.brand img{width:48px;height:48px;border-radius:12px;object-fit:cover}
.nav{display:flex;gap:16px;flex-wrap:wrap}.nav a{padding:10px 12px;border-radius:12px;color:#334155;font-weight:600}.nav a:hover{background:#f1f5f9;text-decoration:none}
.hero{padding:72px 0 40px;background:radial-gradient(circle at top right,#eef2ff 0%,transparent 30%),radial-gradient(circle at bottom left,#eff6ff 0%,transparent 28%),linear-gradient(180deg,#fff 0%,#fcfdff 100%)}
.hero-grid,.split{display:grid;grid-template-columns:1.08fr .92fr;gap:32px;align-items:center}
.kicker{display:inline-block;padding:8px 14px;border:1px solid #dbeafe;background:#f8fbff;color:#1d4ed8;border-radius:999px;font-weight:700;font-size:.92rem;margin-bottom:18px}
h1{font-size:clamp(2.5rem,6vw,4.5rem);line-height:1.03;letter-spacing:-.04em;margin:0 0 18px}.lead,.intro,.section-lead{font-size:1.1rem;color:var(--muted);max-width:70ch}
.button{display:inline-flex;align-items:center;justify-content:center;padding:14px 18px;border-radius:14px;font-weight:800;border:1px solid var(--line);background:#fff;color:var(--text);box-shadow:var(--shadow)}.button.primary{background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff;border:none}.button:hover{text-decoration:none}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px}
.hero-card,.card,.book,.resource,.article-card,.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-card{padding:14px}.hero-card img{border-radius:18px}.section{padding:40px 0 14px}.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:18px}
h2{font-size:clamp(1.7rem,3vw,2.7rem);letter-spacing:-.03em;margin:0 0 8px}
.grid-3,.book-grid,.resource-grid,.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.card,.book,.resource,.article-card,.panel{padding:22px}
.eyebrow{font-size:.84rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#6366f1}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.tag{display:inline-block;padding:6px 10px;border-radius:999px;background:#f1f5f9;color:#334155;font-size:.86rem;font-weight:700}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:20px}.stat{padding:18px;border:1px solid var(--line);border-radius:18px;background:#fff}.stat strong{display:block;font-size:1.5rem}
.feature-list{padding-left:18px}.feature-list li{margin:.45rem 0}.cta{margin:48px 0 70px;padding:34px;border-radius:30px;color:#fff;background:linear-gradient(135deg,#1d4ed8,#7c3aed 65%,#0ea5e9)}
.cta p{color:rgba(255,255,255,.92)}.site-footer{margin-top:50px;border-top:1px solid var(--line);background:#fff}.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:24px;padding:34px 0}
.footer-grid p,.footer-grid li,.prose p,.prose li,.book p,.resource p,.article-card p{color:var(--muted)}.footer-grid ul{list-style:none;padding:0;margin:0}.footer-grid li{margin:.5rem 0}
.page-hero{padding:54px 0 16px}.page-hero h1{font-size:clamp(2.2rem,4.7vw,3.4rem)}.prose{max-width:820px}.download-badge{display:inline-block;font-weight:800;color:#0f766e;background:#ecfeff;border:1px solid #ccfbf1;padding:7px 10px;border-radius:999px}
@media (max-width:980px){.hero-grid,.split,.grid-3,.grid-2,.book-grid,.resource-grid,.article-grid,.footer-grid,.stat-row{grid-template-columns:1fr}.nav{display:none}}
.book img{
  width:100%;
  border-radius:10px;
  margin-bottom:12px;
}