:root{--azul:#0f3d6b;--azul2:#1560a2;--verde:#5cb800;--verde2:#4a9600;--fondo:#f5f7fa;--texto:#1d2733;--gris:#5c6b7a;--borde:#d9e0e8}
@media (prefers-color-scheme:dark){:root{--fondo:#0e1620;--texto:#e8eef5;--gris:#9fb0c1;--borde:#2a3949}.card,.formcard{background:#16212e!important}input{background:#0e1620!important;color:var(--texto)!important}}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--fondo);color:var(--texto);line-height:1.55}
a{color:var(--azul2)}
.bar{max-width:1080px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
#site-header{background:var(--azul);color:#fff;padding:14px 0}
#site-header a{color:#fff;text-decoration:none}
.brand{display:flex;align-items:center;gap:10px;font-size:1.35rem;font-weight:700}
.brand small{font-weight:400;opacity:.8}
.logo{height:46px;width:46px;border-radius:50%}
nav{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
nav button{background:transparent;border:1px solid #fff8;color:#fff;border-radius:6px;padding:4px 10px;cursor:pointer}
main{max-width:1080px;margin:0 auto;padding:40px 20px 60px}
h1{font-size:clamp(1.9rem,4vw,2.8rem);line-height:1.15;margin:0 0 12px}
h2{margin-top:2rem}
.lead{font-size:1.15rem;color:var(--gris);max-width:640px}
.grid{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:start}
@media (max-width:820px){.grid{grid-template-columns:1fr;gap:24px}}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin-top:24px}
.card,.formcard{background:#fff;border:1px solid var(--borde);border-radius:16px;padding:24px}
.formcard{box-shadow:0 8px 30px #0001}
.checks{list-style:none;padding:0}
.checks li:before{content:"✓";color:var(--verde2);font-weight:700;margin-right:8px}
label{display:block;font-weight:600;margin:14px 0 6px}
input[type=text],input[type=email]{width:100%;padding:13px 14px;border:1px solid var(--borde);border-radius:10px;font-size:1rem}
.btn{display:inline-block;background:var(--verde);color:#fff;border:0;border-radius:12px;padding:14px 22px;font-size:1.05rem;font-weight:700;cursor:pointer;text-decoration:none;text-align:center}
.btn:hover{background:var(--verde2)}
.btn.block{width:100%;margin-top:18px}
.btn.sec{background:var(--azul2)}
.small{font-size:.85rem;color:var(--gris)}
.err{color:#c0392b;margin-top:10px;min-height:1.2em}
.video{position:relative;padding-top:56.25%;border-radius:14px;overflow:hidden;background:#0b1620}
.video iframe,.video div{position:absolute;inset:0;width:100%;height:100%;border:0;display:grid;place-items:center;color:#9fb0c1}
.hash{font-family:ui-monospace,Consolas,monospace;font-size:.78rem;word-break:break-all;background:#0001;padding:6px 8px;border-radius:6px}
.notice{border-left:4px solid var(--azul2);background:#1560a210;padding:12px 16px;border-radius:6px;margin:18px 0}
#site-footer{border-top:1px solid var(--borde);padding:22px 0;color:var(--gris);font-size:.9rem}
.price{font-size:2rem;font-weight:800}
.hidden{display:none}
.file{display:flex;align-items:center;gap:14px;background:#fff;border:2px solid var(--verde);border-radius:14px;padding:16px 18px;text-decoration:none;color:var(--texto);margin:8px 0 18px}
.file:hover{background:#5cb80010}
.file .arrow{font-size:1.8rem;color:var(--verde2);line-height:1}
.file .fi{flex:1;display:flex;flex-direction:column;word-break:break-all}
.file .fi small{color:var(--gris)}
.file .dl{background:var(--verde);color:#fff;border-radius:10px;padding:10px 16px;font-weight:700}
@media (prefers-color-scheme:dark){.file{background:#16212e}}