:root{--bg:#f4f5ff;--card:rgba(255,255,255,.82);--solid:#fff;--tx:#1a1d2e;--mut:#6b7188;--ac:#6366f1;--ac2:#8b5cf6;--soft:#eef0ff;--bd:rgba(99,102,241,.14);--sh:0 10px 30px -12px rgba(79,70,229,.25);--g:linear-gradient(135deg,#6366f1,#8b5cf6 55%,#ec4899)}
@media(prefers-color-scheme:dark){:root{--bg:#0f1020;--card:rgba(30,32,56,.7);--solid:#1b1d35;--tx:#eef0ff;--mut:#9ca3c4;--ac:#818cf8;--ac2:#a78bfa;--soft:#262a4d;--bd:rgba(129,140,248,.2);--sh:0 10px 30px -12px rgba(0,0,0,.6)}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;color:var(--tx);font:16px/1.55 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
background:radial-gradient(60rem 30rem at 10% -10%,rgba(99,102,241,.22),transparent 60%),radial-gradient(50rem 28rem at 100% 0,rgba(236,72,153,.16),transparent 60%),var(--bg);background-attachment:fixed}
a{color:var(--ac);text-decoration:none}
header,main,footer{max-width:960px;margin:0 auto;padding-left:20px;padding-right:20px}
header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;padding-top:20px;padding-bottom:10px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--tx)}
.logo i{display:grid;place-items:center;width:36px;height:36px;border-radius:11px;background:var(--g);font-style:normal;box-shadow:0 8px 18px -6px rgba(99,102,241,.6)}
nav{display:flex;gap:6px;background:var(--card);border:1px solid var(--bd);border-radius:999px;padding:4px;backdrop-filter:blur(10px)}
nav a{padding:7px 14px;border-radius:999px;color:var(--mut);font-size:14px;font-weight:600;transition:.2s}
nav a:hover{color:var(--ac)}
nav a.on{background:var(--g);color:#fff;box-shadow:0 6px 14px -6px rgba(99,102,241,.7)}
.hero{text-align:center;padding:48px 0 34px}
.hero .pill{display:inline-block;padding:5px 14px;border-radius:999px;background:var(--soft);color:var(--ac);font-size:13px;font-weight:700;margin-bottom:16px}
.hero h1{font-size:clamp(32px,6vw,52px);line-height:1.1;margin:0 0 14px}
.hero .lead{max-width:540px;margin:0 auto;font-size:18px}
h1{font-size:clamp(26px,4.5vw,34px);margin:26px 0 6px;font-weight:800;letter-spacing:-.02em}
h1 em{font-style:normal;background:var(--g);-webkit-background-clip:text;background-clip:text;color:transparent}
.ph{display:flex;align-items:center;gap:14px;margin-bottom:6px}
.ph .ico{margin:26px 0 0}
.lead{color:var(--mut);margin:0 0 22px}
.card{background:var(--card);border:1px solid var(--bd);border-radius:20px;padding:24px;margin-bottom:18px;box-shadow:var(--sh);backdrop-filter:blur(12px);animation:up .5s both}
@keyframes up{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.tool{display:block;color:var(--tx);transition:.25s;position:relative;overflow:hidden}
.tool:nth-child(2){animation-delay:.08s}.tool:nth-child(3){animation-delay:.16s}
.tool:hover{transform:translateY(-6px);box-shadow:0 22px 40px -16px rgba(99,102,241,.5);border-color:var(--ac)}
.tool b{display:block;font-size:19px;margin:14px 0 4px}
.tool span{color:var(--mut);font-size:14.5px}
.tool:after{content:"→";position:absolute;right:20px;top:24px;font-size:20px;color:var(--ac);opacity:0;transform:translateX(-8px);transition:.25s}
.tool:hover:after{opacity:1;transform:none}
.ico{display:grid;place-items:center;width:54px;height:54px;border-radius:16px;font-size:27px;background:var(--g);box-shadow:0 10px 20px -8px rgba(99,102,241,.6)}
.i2{background:linear-gradient(135deg,#06b6d4,#3b82f6)}.i3{background:linear-gradient(135deg,#f59e0b,#ef4444 60%,#ec4899)}
.out{display:flex;gap:12px;align-items:center;background:var(--soft);border:1px dashed var(--bd);border-radius:14px;padding:14px 16px;font-family:ui-monospace,"Cascadia Code",Consolas,monospace;font-size:clamp(17px,3vw,22px);font-weight:600;word-break:break-all}
.out span{flex:1}
label{display:block;font-size:13px;font-weight:600;color:var(--mut);margin:16px 0 6px}
label b{color:var(--ac);font-size:15px}
.row{display:flex;gap:16px;flex-wrap:wrap}
.row label.ck{display:flex;align-items:center;gap:8px;color:var(--tx);margin:8px 0;font-size:15px;font-weight:500;cursor:pointer;background:var(--soft);padding:8px 12px;border-radius:10px}
input[type=checkbox]{width:17px;height:17px;accent-color:var(--ac)}
input[type=range]{width:100%;accent-color:var(--ac);height:6px}
select,input[type=text],input[type=number]{width:100%;padding:11px 12px;border:1px solid var(--bd);border-radius:12px;background:var(--solid);color:var(--tx);font:inherit;transition:.2s}
select:focus,input:focus{outline:none;border-color:var(--ac);box-shadow:0 0 0 4px rgba(99,102,241,.15)}
button{background:var(--g);color:#fff;border:0;border-radius:12px;padding:11px 20px;font:inherit;font-weight:700;cursor:pointer;box-shadow:0 10px 20px -10px rgba(99,102,241,.8);transition:.2s;white-space:nowrap}
button:hover{transform:translateY(-2px);box-shadow:0 14px 24px -10px rgba(99,102,241,.9)}
button:active{transform:none}
button.sec{background:var(--soft);color:var(--ac);box-shadow:none;padding:8px 14px;font-size:14px}
button.sec:hover{box-shadow:none;background:var(--ac);color:#fff}
.list{list-style:none;padding:0;margin:16px 0 0}
.list li{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:12px 14px;margin-bottom:8px;background:var(--soft);border-radius:12px;animation:up .4s both}
.list li span{flex:1;font-size:16px}
.list li:nth-child(2){animation-delay:.04s}.list li:nth-child(3){animation-delay:.08s}.list li:nth-child(4){animation-delay:.12s}.list li:nth-child(n+5){animation-delay:.16s}
.bar{height:8px;border-radius:4px;background:var(--soft);margin-top:14px;overflow:hidden}
.bar i{display:block;height:100%;width:0;border-radius:4px;transition:.3s}
.mut{color:var(--mut);font-size:14px}
footer{padding-top:28px;padding-bottom:40px;color:var(--mut);font-size:14px;text-align:center}
@media(max-width:560px){.out{flex-direction:column;align-items:stretch}.out button{width:100%}.card{padding:18px}nav a{padding:6px 10px;font-size:13px}}
.i4{background:linear-gradient(135deg,#10b981,#06b6d4)}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
button.tab{background:var(--soft);color:var(--mut);box-shadow:none;padding:7px 13px;font-size:13.5px;font-weight:600;border-radius:999px}
button.tab:hover{color:var(--ac);transform:none;box-shadow:none}
button.tab.on{background:var(--g);color:#fff;box-shadow:0 6px 14px -6px rgba(99,102,241,.7)}
textarea{width:100%;padding:12px 14px;border:1px solid var(--bd);border-radius:14px;background:var(--solid);color:var(--tx);font:14.5px/1.5 ui-monospace,"Cascadia Code",Consolas,monospace;resize:vertical;transition:.2s}
textarea:focus{outline:none;border-color:var(--ac);box-shadow:0 0 0 4px rgba(99,102,241,.15)}
.btns{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:12px}
@media(max-width:560px){header{justify-content:center}nav{flex-wrap:wrap;justify-content:center;border-radius:20px;max-width:100%}nav a{padding:6px 11px}}
.lt{font-weight:800;font-size:23px;letter-spacing:-.04em;background:var(--g);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.35;padding:0 .06em .12em 0}
.lt b{font-weight:600;letter-spacing:-.02em;-webkit-text-fill-color:var(--mut);color:var(--mut)}
.logo:hover .lt{filter:brightness(1.1)}
.seo{margin-top:28px;color:var(--tx)}
.seo h2{font-size:21px;margin:26px 0 10px;letter-spacing:-.01em}
.seo p{color:var(--mut);margin:0 0 12px}
.seo details{background:var(--card);border:1px solid var(--bd);border-radius:14px;padding:14px 18px;margin-bottom:10px}
.seo summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px}
.seo summary::after{content:"+";color:var(--ac);font-size:20px;line-height:1}
.seo details[open] summary::after{content:"–"}
.seo details p{margin:10px 0 0}
.more{display:flex;flex-wrap:wrap;gap:10px}
.more a{background:var(--soft);padding:8px 16px;border-radius:999px;font-weight:600;font-size:14.5px;transition:.2s}
.more a:hover{background:var(--ac);color:#fff}
footer a{color:var(--mut)}footer a:hover{color:var(--ac)}
.seo details{transition:.2s;cursor:pointer}
.seo details:hover{border-color:var(--ac);box-shadow:var(--sh)}
.seo details[open]{border-color:var(--ac)}
.seo summary{align-items:center;color:var(--tx);font-size:16px;padding:2px 0;user-select:none}
.seo summary::-webkit-details-marker{display:none}
.seo summary::after{flex:none;display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--soft);color:var(--ac);font-size:18px;font-weight:700;transition:.2s}
.seo details:hover summary::after,.seo details[open] summary::after{background:var(--ac);color:#fff}
.seo summary:focus-visible{outline:2px solid var(--ac);outline-offset:4px;border-radius:6px}
.more{gap:10px 12px;margin-top:4px}
.more a{display:inline-block}
/* Стили новых утилит: счётчик, QR, цвета, случайные числа, калькуляторы */
.f2{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px 16px}
.f2 label{margin-top:4px}
.hr{height:1px;background:var(--bd);margin:18px 0;border:0}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin:16px 0}
.stat{background:var(--soft);border-radius:14px;padding:14px;text-align:center}
.stat b{display:block;font-size:26px;letter-spacing:-.02em;background:var(--g);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.25}
.stat span{font-size:13px;color:var(--mut)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.chip{background:var(--soft);border-radius:999px;padding:5px 12px;font-size:13px;color:var(--mut)}
.chip.ok{color:#12a594}.chip.bad{color:#e5484d;font-weight:700}
.words{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.words span{background:var(--soft);border-radius:8px;padding:4px 10px;font-size:14px}
.words span i{font-style:normal;color:var(--ac);font-weight:700;margin-left:6px}
.qrbox{display:grid;place-items:center;background:var(--soft);border-radius:16px;padding:18px;min-height:240px}
.qrbox canvas{max-width:100%;height:auto;border-radius:6px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:700px){.two{grid-template-columns:1fr}}
input[type=color]{width:100%;height:46px;padding:3px;border:1px solid var(--bd);border-radius:12px;background:var(--solid);cursor:pointer}
.big{font-size:clamp(34px,8vw,56px);font-weight:800;letter-spacing:-.03em;text-align:center;margin:10px 0;background:var(--g);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.25;word-break:break-word}
.big.sm{font-size:clamp(22px,5vw,32px)}
.res{background:var(--soft);border-radius:14px;padding:14px 16px;margin-top:12px}
.res p{margin:4px 0}
.vals{display:grid;gap:8px;margin:14px 0}
.vals div{display:flex;gap:10px;align-items:center;justify-content:space-between;background:var(--soft);border-radius:12px;padding:9px 12px;font-family:ui-monospace,Consolas,monospace;font-size:15px}
.vals div span{flex:1;word-break:break-all}
.pal{margin-top:16px}
.pal h3{font-size:15px;margin:16px 0 8px}
.sws{display:flex;border-radius:14px;overflow:hidden;box-shadow:var(--sh)}
.sw{flex:1;min-height:72px;display:flex;align-items:flex-end;justify-content:center;padding:6px 2px;font:600 11px ui-monospace,Consolas,monospace;cursor:pointer;transition:.15s;border:0;border-radius:0;box-shadow:none;white-space:normal;word-break:break-all}
.sw:hover{flex:1.4;transform:none;box-shadow:none}
.big-sw{height:90px;border-radius:16px;margin:12px 0;border:1px solid var(--bd)}
.coin{width:140px;height:140px;margin:14px auto;border-radius:50%;display:grid;place-items:center;font-size:20px;font-weight:800;color:#5b3a00;background:radial-gradient(circle at 30% 30%,#fff3b0,#f5b83d 60%,#c98a10);box-shadow:0 14px 28px -10px rgba(201,138,16,.7),inset 0 0 0 6px rgba(255,255,255,.35);text-align:center;line-height:1.2}
.coin.flip{animation:flip .8s ease}
@keyframes flip{0%{transform:rotateY(0) scale(1)}50%{transform:rotateY(900deg) scale(1.25)}100%{transform:rotateY(1800deg) scale(1)}}
.dice{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:12px 0}
.die{min-width:58px;height:58px;display:grid;place-items:center;border-radius:14px;background:var(--g);color:#fff;font-size:24px;font-weight:800;box-shadow:0 8px 16px -8px rgba(99,102,241,.7);animation:up .35s both;padding:0 8px}
.scale{position:relative;height:14px;border-radius:7px;margin:34px 0 8px;background:linear-gradient(90deg,#60a5fa 0 14%,#34d399 14% 40%,#fbbf24 40% 60%,#fb923c 60% 80%,#ef4444 80%)}
.scale i{position:absolute;top:-8px;width:4px;height:30px;border-radius:2px;background:var(--tx);transform:translateX(-50%);transition:.3s}
.scale em{position:absolute;top:-30px;transform:translateX(-50%);font-style:normal;font-weight:800;font-size:14px;white-space:nowrap}
.cat{display:inline-block;padding:4px 12px;border-radius:999px;font-weight:700;font-size:14px;background:var(--soft);color:var(--ac)}
.err{color:#e5484d;font-size:14px;margin-top:8px;min-height:1em}
.note{font-size:13px;color:var(--mut);margin-top:12px}
.sub{font-size:18px;margin:0 0 4px}
.cl{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.cl .card{margin:0}
.nav-more{display:none}
.cats{margin-top:34px}
.cats h2{font-size:22px;margin:0 0 14px;letter-spacing:-.01em;scroll-margin-top:16px}

.i5{background:linear-gradient(135deg,#f43f5e,#f59e0b)}