:root{--bg:#f4f7fb;--card:#fff;--ink:#0f1b33;--muted:#58667d;--line:#e3e9f2;--brand:#0a8f6a;--brand2:#0ea5a4;--soft:#e9f7f2;--shadow:0 1px 2px rgba(15,27,51,.06),0 8px 24px rgba(15,27,51,.06);--h:160}
@media(prefers-color-scheme:dark){:root{--bg:#0b1220;--card:#131c2e;--ink:#eaf0fb;--muted:#9aaac3;--line:#243049;--brand:#34d9a0;--brand2:#2dd4cf;--soft:#10302b;--shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.25)}}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:16px/1.65 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}
a{color:var(--brand)}
.wrap{max-width:1220px;margin:0 auto;padding:0 18px}
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;justify-content:space-between;align-items:center;height:62px;gap:12px}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:1.25rem;text-decoration:none;color:var(--ink);letter-spacing:-.02em}
.mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:grid;place-items:center;color:#fff;font-size:1.05rem;box-shadow:0 4px 12px rgba(10,143,106,.35)}
.logo b{color:var(--brand)}
nav{display:flex;align-items:center;gap:4px}nav a{padding:8px 12px;border-radius:9px;text-decoration:none;color:var(--muted);font-weight:600;font-size:.93rem}nav a:hover{background:var(--soft);color:var(--brand)}
@media(max-width:560px){nav a.hide{display:none}}
.cur{width:auto;padding:8px 10px;font-size:.9rem;border-radius:9px;margin-left:4px;font-weight:600}
nav a[aria-current="page"]{background:var(--soft);color:var(--brand)}
.catbar{border-bottom:1px solid var(--line);background:var(--card)}.catbar .wrap{display:flex;flex-wrap:wrap;gap:8px;padding-top:9px;padding-bottom:9px;scrollbar-width:none}
.catbar a{white-space:nowrap;text-decoration:none;font-weight:600;font-size:.88rem;padding:6px 13px;border-radius:99px;border:1px solid var(--line);color:var(--muted)}
.catbar a:hover{border-color:var(--brand);color:var(--brand)}.catbar a[aria-current="page"]{background:var(--brand);border-color:var(--brand);color:#fff}
@media(prefers-color-scheme:dark){.catbar a[aria-current="page"]{color:#06281e}}
.cats{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(285px,1fr))}
.cat{display:block;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow);transition:.18s}
.cat:hover{transform:translateY(-4px);border-color:hsl(var(--h) 60% 50%)}.cat .ico{margin-bottom:10px}.cat h3{margin:0 0 4px;font-size:1.2rem}.cat p{margin:0 0 10px;color:var(--muted);font-size:.93rem}
.cat ul{margin:0 0 12px;padding-left:18px;color:var(--muted);font-size:.9rem}.cat .n{font-size:.8rem;font-weight:700;color:var(--muted)}
.sres{position:absolute;left:0;right:0;top:100%;background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:14px;margin-top:6px;box-shadow:var(--shadow);overflow:hidden;z-index:30;text-align:left}
.sres a{display:block;padding:10px 16px;text-decoration:none;color:var(--ink);font-weight:600;font-size:.95rem}.sres a:hover{background:var(--soft)}.sres small{display:block;font-weight:400;color:var(--muted)}
.hsearch{position:relative}
.hero{position:relative;overflow:hidden;color:#fff;background:linear-gradient(135deg,#064e3b 0%,#0a8f6a 45%,#0ea5a4 100%);border-radius:0 0 28px 28px}
.hero:before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 85% 10%,rgba(255,255,255,.22),transparent 60%),radial-gradient(500px 280px at 5% 100%,rgba(255,255,255,.12),transparent 60%)}
.hero .wrap{position:relative;padding:54px 18px 64px}
.hero h1{font-size:clamp(2rem,5vw,3.1rem);line-height:1.1;margin:0 0 14px;letter-spacing:-.03em}
.hero p{font-size:1.12rem;max-width:560px;margin:0 0 22px;color:rgba(255,255,255,.88)}
.hsearch{margin:0 0 16px;max-width:520px}.hsearch input{width:100%;padding:14px 18px;border-radius:99px;border:0;font-size:1rem;box-shadow:0 6px 20px rgba(0,0,0,.2);background:#fff;color:#111}
.startgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px;margin:0 0 8px}.start{display:flex;align-items:center;gap:10px;background:var(--card,#fff);border:1px solid var(--line,#e5e7eb);border-radius:14px;padding:14px;text-decoration:none;color:inherit;font-weight:600;transition:transform .15s,box-shadow .15s}.start:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.1)}.start span{font-size:1.5rem}
.badges{display:flex;flex-wrap:wrap;gap:10px}
.badge{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.25);padding:7px 14px;border-radius:99px;font-size:.88rem;font-weight:600;backdrop-filter:blur(4px)}
main{padding-bottom:50px}
h1{font-size:2rem;line-height:1.2;margin:.3em 0 .2em;letter-spacing:-.025em}
h2{font-size:1.35rem;margin:1.5em 0 .5em;letter-spacing:-.015em}
.lead{color:var(--muted);margin:0;font-size:1.05rem}
.sec{margin:38px 0 12px;display:flex;align-items:baseline;justify-content:space-between}.sec h2{margin:0}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(285px,1fr))}
.tcard{display:block;position:relative;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow);transition:.18s}
.tcard:hover{transform:translateY(-4px);border-color:hsl(var(--h) 60% 50%);box-shadow:0 14px 34px hsl(var(--h) 60% 40%/.18)}
.ico{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;font-size:1.6rem;background:hsl(var(--h) 80% 94%);margin-bottom:14px}
@media(prefers-color-scheme:dark){.ico{background:hsl(var(--h) 45% 22%)}}
.tcard h3{margin:0 0 6px;font-size:1.12rem;letter-spacing:-.01em}.tcard p{margin:0 0 14px;color:var(--muted);font-size:.93rem}
.go{font-weight:700;font-size:.9rem;color:hsl(var(--h) 65% 38%)}@media(prefers-color-scheme:dark){.go{color:hsl(var(--h) 70% 70%)}}
.feat{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin-top:34px}
.feat div{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px}.feat b{display:block;margin:6px 0 2px}.feat span{color:var(--muted);font-size:.92rem}
.crumb{font-size:.85rem;color:var(--muted);padding:20px 0 4px}.crumb a{text-decoration:none}
.thead{display:flex;gap:16px;align-items:center;margin-bottom:6px}.thead .ico{margin:0;flex:none}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;margin:18px 0;box-shadow:var(--shadow)}
.calc{display:grid;gap:26px;grid-template-columns:1fr 1.05fr;padding:24px}@media(max-width:760px){.calc{grid-template-columns:1fr}}
label{display:block;font-weight:700;font-size:.85rem;margin:14px 0 6px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}label:first-child{margin-top:0}
input,select{width:100%;padding:12px 14px;font-size:1.05rem;font-weight:600;border:1.5px solid var(--line);border-radius:12px;background:var(--bg);color:var(--ink);font-family:inherit;transition:.15s}
input:focus,select:focus{outline:none;border-color:hsl(var(--h) 65% 45%);box-shadow:0 0 0 4px hsl(var(--h) 65% 45%/.18)}
.actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.btn{font:inherit;font-weight:700;font-size:.88rem;padding:9px 14px;border-radius:10px;border:1.5px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer;width:auto}
.btn:hover{border-color:hsl(var(--h) 65% 45%);color:hsl(var(--h) 65% 35%)}
@media(prefers-color-scheme:dark){.btn:hover{color:hsl(var(--h) 70% 70%)}}
.result{border-radius:16px;padding:22px;color:#fff;background:linear-gradient(135deg,hsl(var(--h) 70% 28%),hsl(calc(var(--h) + 25) 70% 38%));box-shadow:0 12px 30px hsl(var(--h) 60% 30%/.3);align-self:start}
.biglabel{font-size:.85rem;opacity:.85;font-weight:600;text-transform:uppercase;letter-spacing:.05em}
.big{font-size:clamp(2rem,6vw,2.7rem);font-weight:800;letter-spacing:-.03em;line-height:1.15;margin:2px 0 4px;word-break:break-word;animation:pop .25s}
@keyframes pop{from{opacity:.4;transform:translateY(3px)}to{opacity:1;transform:none}}
.row{display:flex;justify-content:space-between;gap:10px;padding:9px 0;border-top:1px solid rgba(255,255,255,.2);font-size:.97rem}.row span{opacity:.88}
.bar{display:flex;height:14px;border-radius:99px;overflow:hidden;margin:16px 0 8px;background:rgba(255,255,255,.2)}
.bar i{display:block;height:100%;transition:width .35s}
.legend{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:.82rem}.legend em{font-style:normal;display:flex;align-items:center;gap:6px;opacity:.95}.legend u{width:10px;height:10px;border-radius:3px;display:inline-block}
.chart{margin-top:16px}.chart small{display:block;opacity:.85;font-size:.78rem;margin-bottom:6px;text-transform:uppercase;letter-spacing:.05em}
.cols{display:flex;align-items:flex-end;gap:3px;height:70px}.cols i{flex:1;background:rgba(255,255,255,.75);border-radius:3px 3px 0 0;min-height:2px}
.cends{display:flex;justify-content:space-between;font-size:.74rem;opacity:.8;margin-top:3px}
.tblwrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:.9rem}th,td{text-align:right;padding:8px 10px;border-bottom:1px solid var(--line)}th:first-child,td:first-child{text-align:left}th{color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.04em}
.ad{min-height:90px;border:1.5px dashed var(--line);border-radius:14px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;margin:20px 0}
.prose h2:first-child{margin-top:0}.prose p,.prose li{color:var(--ink)}.prose ul{padding-left:20px}
.example{background:var(--soft);border-left:4px solid var(--brand);padding:12px 16px;border-radius:0 12px 12px 0;margin:10px 0}
.promo{display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap;border:1.5px solid hsl(var(--h) 55% 60%);background:hsl(var(--h) 80% 96%);}
@media(prefers-color-scheme:dark){.promo{background:hsl(var(--h) 40% 16%)}}
.promo b{display:block}.promo span{color:var(--muted);font-size:.93rem}.pbtn{background:hsl(var(--h) 65% 38%);color:#fff;text-decoration:none;font-weight:700;padding:10px 16px;border-radius:10px}
.disc{font-size:.75rem;color:var(--muted)}
details{border-top:1px solid var(--line);padding:12px 0}details:first-of-type{border:0}summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between}summary:after{content:"+";color:var(--brand);font-size:1.3rem;line-height:1}details[open] summary:after{content:"–"}details p{margin:.6em 0 0;color:var(--muted)}
.note{font-size:.85rem;color:var(--muted)}
article.card{padding:28px}article h1{margin-top:0}
footer{border-top:1px solid var(--line);background:var(--card);margin-top:20px}
.fgrid{display:grid;gap:24px;grid-template-columns:2fr 1fr 1fr 1fr;padding:32px 0 18px}@media(max-width:700px){.fgrid{grid-template-columns:1fr 1fr}}
footer h4{margin:0 0 8px;font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}footer a:not(.logo){display:block;text-decoration:none;color:var(--ink);padding:3px 0;font-size:.93rem}footer a:hover{color:var(--brand)}
footer p{color:var(--muted);font-size:.9rem;margin:6px 0}.copy{border-top:1px solid var(--line);padding:14px 0;font-size:.82rem;color:var(--muted)}
@media print{.top,.hero,footer,.ad,.actions,.promo,.grid,.sec{display:none!important}body{background:#fff}}
@media(max-width:700px){.wrap{padding:0 14px}.top .wrap{flex-wrap:wrap;height:auto;padding-top:8px;padding-bottom:6px;gap:4px}nav{width:100%;justify-content:space-between;gap:0}nav a{padding:6px 7px;font-size:.88rem}nav a.hide{display:inline-block}.cur{padding:6px 4px;margin-left:0}.logo{font-size:1.1rem}
.catbar .wrap{flex-wrap:nowrap;overflow-x:auto}.catbar a{font-size:.82rem}.grid,.cats{grid-template-columns:1fr}.hero .wrap{padding:34px 14px 42px}.startgrid{grid-template-columns:1fr 1fr}.thead{align-items:flex-start}}