:root{--bg:#eef2f6;--surface:#fff;--ink:#2349ba;--muted:#5f6f7f;--line:#4169e1;--accent:#4169e1;--accent-dark:#2e4ba3;--accent-tint:#acbae3;--error:#b3372f}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:inherit}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.wrap{width:100%;max-width:1040px;margin:0 auto;padding:0 24px}
header .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:20px;padding-bottom:20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.25rem;letter-spacing:-.01em;text-decoration:none}
.brand svg{width:30px;height:30px}
nav{display:flex;gap:24px}
nav a{color:var(--muted);text-decoration:none;font-size:.95rem}
nav a:hover{color:var(--ink);text-decoration:underline}
nav a[aria-current="page"]{color:var(--ink);font-weight:600}
main{flex:1}
main.home .wrap{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:start;padding-top:40px;padding-bottom:72px}
main.doc .wrap{max-width:800px;padding-top:32px;padding-bottom:72px}
h1{margin:0 0 16px;font-size:clamp(2rem,4.2vw,3rem);line-height:1.1;letter-spacing:-.025em;font-weight:750}
.lead{margin:0 0 32px;color:var(--muted);max-width:34ch;font-size:1.05rem}
dl.facts{margin:0;border-top:1px solid var(--line)}
.facts div{display:flex;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.facts dt{color:var(--muted)}
.facts dd{margin:0;font-weight:600;text-align:right}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:0 1px 2px rgba(35,73,186,.06)}
.drop{position:relative;display:block;padding:40px 20px;text-align:center;border:2px dashed #a9bccb;border-radius:10px;cursor:pointer;transition:background-color .15s,border-color .15s}
.drop:hover,.drop.over{background:var(--accent-tint);border-color:var(--accent)}
.drop:focus-within{outline:3px solid var(--accent);outline-offset:2px}
.drop input{position:absolute;width:1px;height:1px;opacity:0;overflow:hidden;clip:rect(0 0 0 0)}
.drop svg{width:40px;height:40px;color:var(--accent);margin-bottom:8px}
.drop strong{display:block;font-size:1.05rem}
.drop span{color:var(--muted);font-size:.92rem}
ul.files{list-style:none;margin:16px 0 0;padding:0}
ul.files li{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
ul.files .name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
ul.files .size{color:var(--muted);font-size:.9rem;white-space:nowrap}
ul.files button{border:0;background:none;color:var(--muted);font-size:1.3rem;line-height:1;padding:4px 8px;border-radius:6px;cursor:pointer}
ul.files button:hover{color:var(--error);background:#f8e9e7}
.row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:20px 0 16px}
.row label{color:var(--muted)}
select{font:inherit;color:var(--ink);padding:8px 12px;border:1px solid var(--line);border-radius:8px;background:#fff}
.btn{width:100%;font:inherit;font-weight:650;padding:13px 18px;color:#fff;background:var(--accent);border:0;border-radius:10px;cursor:pointer;transition:background-color .15s}
.btn:hover:not(:disabled){background:var(--accent-dark)}
.btn:disabled{opacity:.6;cursor:default}
.progress{height:6px;margin-top:16px;background:var(--line);border-radius:3px;overflow:hidden;visibility:hidden}
.progress.on{visibility:visible}
.progress div{width:0;height:100%;background:var(--accent);transition:width .25s linear}
.status{min-height:1.5em;margin:12px 0 0;font-size:.95rem;color:var(--muted)}
.status.err{color:var(--error)}
.doc h1{font-size:clamp(1.8rem,3.4vw,2.4rem);line-height:1.15;margin-bottom:12px}
.doc .lead{max-width:60ch;margin-bottom:28px}
.doc h2{margin:32px 0 8px;font-size:1.2rem}
.doc p,.doc li{max-width:66ch}
.doc ul{padding-left:1.2em}
.steps{list-style:none;margin:0;padding:0;counter-reset:s}
.steps li{position:relative;padding:18px 0 18px 52px;border-top:1px solid var(--line)}
.steps li:last-child{border-bottom:1px solid var(--line)}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:18px;width:32px;height:32px;border-radius:50%;background:var(--accent-tint);color:var(--accent-dark);font-weight:700;display:grid;place-items:center}
.steps strong{display:block}
.steps span{color:var(--muted)}
details{border-top:1px solid var(--line);padding:14px 0}
details:last-of-type{border-bottom:1px solid var(--line)}
summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--muted);font-weight:400;font-size:1.3rem;line-height:1}
details[open] summary::after{content:"\2212"}
details p{margin:10px 0 0;color:var(--muted)}
.notfound{text-align:center;padding:72px 0 24px}
.notfound .code{font-size:5rem;font-weight:800;letter-spacing:-.04em;color:var(--accent);line-height:1}
.notfound p{color:var(--muted)}
.linkbtn{display:inline-block;margin-top:12px;padding:11px 18px;background:var(--accent);color:#fff;border-radius:10px;text-decoration:none;font-weight:650}
.linkbtn:hover{background:var(--accent-dark)}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;padding-top:20px;padding-bottom:20px}
footer nav a{font-size:.9rem}
@media (max-width:800px){main.home .wrap{grid-template-columns:1fr;gap:32px;padding-top:16px}nav{gap:16px}.lead{max-width:none}header .wrap{flex-wrap:wrap;gap:8px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}