:root{--ink:#14213d;--blue:#2b59c3;--yellow:#ffd23f;--paper:#eef1f5;--card:#fff;--muted:#5a6478;--line:#d9dfe9;--ok:#1f9d55;--bad:#c8372d;--warn:#b7791f;--r:16px}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--ink:#eef1f5;--paper:#0f1830;--card:#16223f;--muted:#a3adc2;--line:#27365a}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.55 "Golos Text",system-ui,sans-serif}
h1,h2,h3{font-family:"Unbounded","Golos Text",sans-serif;line-height:1.15;margin:0 0 12px}
h1{font-size:clamp(1.9rem,5.4vw,3.1rem)}h2{font-size:clamp(1.35rem,3.4vw,1.9rem)}h3{font-size:1.1rem}
a{color:var(--blue)}p{margin:0 0 12px}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:62px;gap:10px}
.logo{display:flex;align-items:center;gap:9px;font:700 1.05rem "Unbounded",sans-serif;color:var(--ink);text-decoration:none}
.logo i{width:30px;height:30px;border-radius:8px;background:var(--blue);color:#fff;display:grid;place-items:center;font-style:normal}
.logo small{font:600 .72rem "Golos Text";background:var(--yellow);color:#14213d;border-radius:6px;padding:2px 7px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;padding:13px 22px;font:600 1rem "Golos Text",sans-serif;cursor:pointer;text-decoration:none;background:var(--blue);color:#fff;transition:transform .12s}
.btn:hover{transform:translateY(-1px)}.btn.y{background:var(--yellow);color:#14213d}.btn.o{background:transparent;color:var(--ink);border:1.5px solid var(--line)}.btn.sm{padding:8px 14px;font-size:.9rem;border-radius:10px}.btn.bad{background:var(--bad)}.btn.ok{background:var(--ok)}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}
.hero{padding:54px 0 30px}.hero p.lead{font-size:1.18rem;color:var(--muted);max-width:640px}
mark{background:linear-gradient(transparent 58%,var(--yellow) 58% 92%,transparent 92%);color:inherit}
.grid{display:grid;gap:16px}.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:820px){.g2,.g3,.g4{grid-template-columns:1fr}.g4.keep{grid-template-columns:repeat(2,1fr)}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.card.hl{border:2px solid var(--blue);box-shadow:0 24px 50px -30px rgba(43,89,195,.6)}
.tag{display:inline-block;background:var(--yellow);color:#14213d;border-radius:8px;padding:3px 10px;font:700 .78rem "Golos Text";margin-bottom:10px}
.big{font:800 2rem "Unbounded",sans-serif}.muted{color:var(--muted)}.small{font-size:.88rem}
ul.ck{list-style:none;padding:0;margin:12px 0}ul.ck li{padding-left:26px;position:relative;margin:7px 0}ul.ck li:before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:800}
section{padding:34px 0}
.steps{counter-reset:s}.steps .card{position:relative;padding-top:44px}.steps .card:before{counter-increment:s;content:counter(s);position:absolute;top:14px;left:20px;width:28px;height:28px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:700}
label{display:block;font-weight:600;font-size:.92rem;margin:12px 0 5px}
input,select,textarea{width:100%;padding:12px 13px;border:1.5px solid var(--line);border-radius:11px;background:var(--card);color:var(--ink);font:1rem "Golos Text",sans-serif}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue)}
.err{color:var(--bad);font-weight:600;margin:10px 0;min-height:1.2em}.okm{color:var(--ok);font-weight:600}
.modal{position:fixed;inset:0;background:rgba(10,18,40,.6);display:none;align-items:flex-start;justify-content:center;padding:24px 14px;overflow:auto;z-index:50}
.modal.on{display:flex}.modal .box{background:var(--card);border-radius:20px;padding:26px;max-width:520px;width:100%;margin:auto}
.seg{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:8px 0}.seg label{margin:0;border:1.5px solid var(--line);border-radius:12px;padding:12px;cursor:pointer;font-weight:600}
.seg input{width:auto;margin-right:6px}.seg label.on{border-color:var(--blue);background:color-mix(in srgb,var(--blue) 10%,transparent)}
table{width:100%;border-collapse:collapse;font-size:.93rem}th,td{padding:9px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{color:var(--muted);font-weight:600;font-size:.82rem}
.tblwrap{overflow-x:auto}
.pill{display:inline-block;border-radius:20px;padding:2px 10px;font-size:.78rem;font-weight:700;background:var(--line)}
.pill.ok{background:#d6f3e2;color:#14683a}.pill.bad{background:#fbdcd9;color:#8f2119}.pill.warn{background:#fdecc8;color:#7c5410}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin:16px 0}.tabs button{border:1.5px solid var(--line);background:var(--card);color:var(--ink);border-radius:11px;padding:9px 15px;font:600 .95rem "Golos Text";cursor:pointer}.tabs button.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px}.stat b{display:block;font:800 1.55rem "Unbounded",sans-serif}.stat span{color:var(--muted);font-size:.85rem}
.copy{display:flex;gap:8px;align-items:center;background:var(--paper);border:1px dashed var(--line);border-radius:10px;padding:9px 11px;word-break:break-all;font-size:.9rem;margin:6px 0}
.copy button{flex:none}
.notice{background:color-mix(in srgb,var(--yellow) 30%,transparent);border:1px solid var(--yellow);border-radius:12px;padding:13px 15px;margin:14px 0}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.grow{flex:1;min-width:140px}
footer{padding:36px 0;color:var(--muted);font-size:.9rem;border-top:1px solid var(--line);margin-top:30px}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:13px 16px;margin:8px 0}summary{cursor:pointer;font-weight:600}
.calc input[type=range]{padding:0}
.hidden{display:none!important}