:root{--ink:#14181f;--mut:#5b6472;--line:#e3e6eb;--bg:#fbfbfa;--card:#ffffff;--acc:#1f4fd8;--acc2:#0f2f8f;--soft:#eef2fd}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
a{color:var(--acc);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
header.top{position:sticky;top:0;z-index:5;background:rgba(251,251,250,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;height:64px;gap:28px}
.logo{font-weight:700;font-size:18px;color:var(--ink);letter-spacing:-.01em}
.logo i{font-style:normal;color:var(--acc)}
nav{display:flex;gap:22px;flex:1}
nav a{color:var(--mut);font-size:14px}nav a.on,nav a:hover{color:var(--ink);text-decoration:none}
.btn{display:inline-block;background:var(--acc);color:#fff;padding:10px 18px;border-radius:8px;font-weight:600;font-size:14px;border:0;cursor:pointer}
.btn:hover{background:var(--acc2);text-decoration:none}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.hero{padding-top:88px;padding-bottom:64px}
.hero h1{font-size:52px;line-height:1.08;letter-spacing:-.03em;margin:0 0 18px;max-width:720px}
.hero p{font-size:19px;color:var(--mut);max-width:620px;margin:0 0 28px}
.hero .cta{display:flex;gap:12px}
pre,code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
pre{background:#0f1420;color:#d8deea;padding:18px 20px;border-radius:10px;overflow:auto;font-size:13px;line-height:1.6}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:24px}
.card h3{margin:0 0 8px;font-size:17px}.card p{margin:0;color:var(--mut);font-size:15px}
section{padding:48px 0}
section h2{font-size:30px;letter-spacing:-.02em;margin:0 0 8px}
.lead{color:var(--mut);margin:0 0 28px}
.band{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.price{display:flex;flex-direction:column;gap:6px}
.price .n{font-size:36px;font-weight:700;letter-spacing:-.02em}.price .n small{font-size:14px;color:var(--mut);font-weight:400}
.price ul{margin:12px 0 18px;padding-left:18px;color:var(--mut);font-size:14px}
table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:12px 10px;border-bottom:1px solid var(--line)}
.ok{color:#14803c;font-weight:600}
footer{border-top:1px solid var(--line);padding:32px 0;color:var(--mut);font-size:13px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
input,textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:8px;font:inherit;background:#fff}
label{font-size:13px;color:var(--mut);display:block;margin:14px 0 6px}
.page{padding-top:56px;padding-bottom:24px}.page h1{font-size:38px;letter-spacing:-.02em;margin:0 0 8px}
@media(max-width:820px){.grid{grid-template-columns:1fr}.hero h1{font-size:36px}nav{display:none}.hero{padding-top:56px;padding-bottom:40px}}
/* chat flotante */
#kr-fab{position:fixed;right:22px;bottom:22px;width:56px;height:56px;border-radius:50%;background:var(--acc);color:#fff;border:0;cursor:pointer;box-shadow:0 8px 24px rgba(20,40,120,.35);font-size:24px;z-index:20}
#kr-panel{position:fixed;right:22px;bottom:90px;width:360px;max-width:calc(100vw - 32px);height:480px;max-height:calc(100vh - 120px);background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 18px 50px rgba(15,25,60,.22);display:none;flex-direction:column;z-index:20;overflow:hidden}
#kr-panel.open{display:flex}
#kr-head{background:var(--acc);color:#fff;padding:14px 16px;font-weight:600;font-size:15px;display:flex;justify-content:space-between;align-items:center}
#kr-head span{font-weight:400;font-size:12px;opacity:.85;display:block}
#kr-head button{background:none;border:0;color:#fff;font-size:20px;cursor:pointer}
#kr-log{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px;background:#f6f7f9}
.kr-m{max-width:86%;padding:9px 12px;border-radius:12px;font-size:14px;line-height:1.5;white-space:pre-wrap;word-wrap:break-word}
.kr-m.bot{background:#fff;border:1px solid var(--line);align-self:flex-start}
.kr-m.me{background:var(--acc);color:#fff;align-self:flex-end}
#kr-form{display:flex;gap:8px;padding:10px;border-top:1px solid var(--line);background:#fff}
#kr-form input{flex:1}
#kr-form button{padding:0 14px}