:root{--navy:#151f4d;--navy-2:#24357e;--navy-soft:#3d4f9e;--red:#e01b25;--ink:#16192b;
--muted:#5b6076;--line:#dfe2ee;--bg:#f5f6fa;--card:#fff}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy-2)}
.wrap{max-width:1040px;margin:0 auto;padding:0 1.25rem}
.narrow{max-width:740px}
nav.top{background:var(--navy);color:#fff}
nav.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-top:.8rem;padding-bottom:.8rem;flex-wrap:wrap}
nav.top a{color:#fff;text-decoration:none;font-weight:600;font-size:.95rem}
nav.top .brand{font-weight:800;letter-spacing:-.01em;font-size:1.02rem}
nav.top .links{display:flex;gap:1.2rem;flex-wrap:wrap}
.hero{background:linear-gradient(160deg,var(--navy) 0%,var(--navy-2) 55%,var(--navy-soft) 100%);color:#fff;padding:3rem 0 3.25rem}
.hero-grid{display:grid;grid-template-columns:250px 1fr;gap:2.75rem;align-items:center}
.cover{border-radius:6px;box-shadow:0 18px 44px rgba(0,0,0,.42);width:100%}
h1{margin:0 0 .6rem;font-size:2.5rem;line-height:1.1;letter-spacing:-.02em;font-weight:800}
.sub{margin:0 0 1.2rem;font-size:1.12rem;color:#cdd5f2;line-height:1.45}
.authors{margin:0 0 1.4rem;font-weight:600}
.authors span{display:block;color:#b9c2e8;font-weight:400;font-size:.92rem;margin-top:.3rem}
.badge{display:inline-block;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.3);border-radius:999px;padding:.35rem .9rem;font-size:.83rem;font-weight:600}
.buy{display:flex;gap:.7rem;flex-wrap:wrap;margin-top:1.4rem}
.btn{display:inline-block;background:var(--red);color:#fff !important;text-decoration:none;font-weight:700;padding:.75rem 1.3rem;border-radius:5px;font-size:.98rem}
.btn:hover{background:#c4141d}
.btn.ghost{background:transparent;border:1.5px solid rgba(255,255,255,.7)}
.btn.ghost:hover{background:rgba(255,255,255,.1)}
.section{padding:3rem 0}
h2{font-size:1.55rem;margin:0 0 1rem;letter-spacing:-.01em;line-height:1.25}
.lede{font-size:1.08rem;color:var(--muted);max-width:64ch;margin:0 0 2rem}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
.card{display:block;background:var(--card);border:1px solid var(--line);border-left:4px solid var(--red);border-radius:8px;padding:1.1rem 1.25rem;text-decoration:none;color:var(--ink)}
.card:hover{border-color:var(--navy-soft);border-left-color:var(--red)}
.card strong{display:block;color:var(--navy);font-size:1.05rem;margin-bottom:.25rem}
.card span{color:var(--muted);font-size:.93rem}
.cols{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.col{border-top:3px solid var(--red);padding-top:.9rem}
.col h3{margin:0 0 .45rem;font-size:1.02rem;color:var(--navy)}
.col p{margin:0;color:var(--muted);font-size:.95rem}
article h1{color:var(--navy);font-size:2.2rem;margin-top:2.2rem}
article .intro{font-size:1.15rem;color:var(--muted)}
article h2{margin-top:2.2rem;color:var(--navy)}
article li{margin:.3rem 0}
.byline{font-size:.92rem;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:1rem;margin-bottom:1.5rem}
.faq{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:.5rem 1.5rem 1rem;margin-top:2.2rem}
.faq h3{font-size:1.05rem;margin:1.2rem 0 .3rem;color:var(--navy)}
.faq p{margin:0}
.promo{display:grid;grid-template-columns:120px 1fr;gap:1.4rem;align-items:center;background:var(--navy);color:#fff;border-radius:10px;padding:1.5rem;margin:2.5rem 0}
.promo p{margin:0 0 .9rem;color:#dfe4f7}
.promo strong{color:#fff}
.note{font-size:.9rem;color:var(--muted);background:#fff;border:1px solid var(--line);border-radius:8px;padding:1rem 1.2rem;margin:2rem 0}
.formwrap{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:2rem;max-width:640px;margin:0 auto}
label{display:block;font-weight:600;font-size:.9rem;margin:0 0 .35rem}
input[type=text],input[type=email],select{width:100%;padding:.7rem .8rem;font:inherit;border:1px solid #c7cbdd;border-radius:5px;background:#fff;color:var(--ink);margin-bottom:1.1rem}
button{background:var(--navy);color:#fff;border:0;border-radius:5px;padding:.9rem 1.5rem;font:inherit;font-weight:700;cursor:pointer;width:100%}
.hp{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}
.done{display:none;background:#eef6ee;border:1px solid #bcd9bd;border-radius:8px;padding:1.5rem;text-align:center}
.err{display:none;color:var(--red);font-size:.92rem;margin-top:.8rem;font-weight:600}
.fine{font-size:.84rem;color:var(--muted);margin:1rem 0 0}
footer{background:#0f1738;color:#a8b2d8;padding:2.25rem 0;font-size:.88rem;margin-top:3rem}
footer a{color:#cdd5f2}
footer p{margin:.4rem 0}
@media (max-width:760px){
 .hero-grid{grid-template-columns:1fr;gap:1.75rem;text-align:center}
 .cover{max-width:200px;margin:0 auto}
 .buy{justify-content:center}
 h1{font-size:2rem} article h1{font-size:1.75rem}
 .grid,.cols{grid-template-columns:1fr}
 .promo{grid-template-columns:1fr;text-align:center}
 .promo img{max-width:110px;margin:0 auto}
 .formwrap{padding:1.4rem}
}