:root{--bg:#f6f7f9;--card:#fff;--text:#1b1f27;--muted:#5d6676;--line:#e2e5eb;--accent:#3b5bdb;--accent-ink:#fff;--accent-soft:#e9edff;--ok:#16794c;--err:#b42318;--code:#f0f2f6;--shadow:0 1px 2px rgba(16,24,40,.05),0 2px 6px rgba(16,24,40,.06)}
:root[data-theme=dark]{--bg:#0f1218;--card:#171b23;--text:#e8ebf1;--muted:#9aa4b5;--line:#272d38;--accent:#7c93ff;--accent-ink:#0f1218;--accent-soft:#222a45;--ok:#4cc38a;--err:#ff7b72;--code:#1d222c;--shadow:none}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0f1218;--card:#171b23;--text:#e8ebf1;--muted:#9aa4b5;--line:#272d38;--accent:#7c93ff;--accent-ink:#0f1218;--accent-soft:#222a45;--ok:#4cc38a;--err:#ff7b72;--code:#1d222c;--shadow:none}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;min-height:100vh;display:flex;flex-direction:column}
.wrap{width:100%;max-width:980px;margin:0 auto;padding:0 20px}
.main{flex:1;padding-top:28px;padding-bottom:48px}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
h1{font-size:clamp(1.6rem,3.6vw,2.1rem);line-height:1.2;margin:.2em 0 .3em;letter-spacing:-.01em}
h2{font-size:1.2rem;margin:1.6em 0 .6em}
.lead{color:var(--muted);margin:0 0 1.4em;font-size:1.05rem}
.muted{color:var(--muted)}
.site-header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.bar{display:flex;align-items:center;justify-content:space-between;height:58px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:500;font-size:1.05rem}.brand:hover{text-decoration:none}.brand b{color:var(--accent);font-weight:700}
.nav{display:flex;align-items:center;gap:6px}.nav a{color:var(--muted);padding:6px 10px;border-radius:8px;font-size:.95rem}.nav a:hover{background:var(--accent-soft);color:var(--text);text-decoration:none}.nav a[aria-current=page]{color:var(--text);font-weight:600}
.icon-btn{border:1px solid var(--line);background:transparent;color:var(--text);width:34px;height:34px;border-radius:8px;cursor:pointer;font-size:1rem}.icon-btn:hover{background:var(--accent-soft)}
.crumbs{font-size:.9rem;color:var(--muted);margin-bottom:6px}.crumbs span{margin:0 4px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:var(--shadow);margin:0 0 18px}
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.tool{display:flex;gap:14px;align-items:flex-start;color:var(--text);padding:16px;background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);transition:border-color .15s,transform .15s}
.tool:hover{border-color:var(--accent);text-decoration:none;transform:translateY(-1px)}
.tool .ico{flex:0 0 42px;height:42px;border-radius:10px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-weight:700;font-size:.95rem}
.tool h3{margin:0 0 2px;font-size:1.02rem}.tool p{margin:0;color:var(--muted);font-size:.92rem}
.search{width:100%;max-width:420px;margin:0 0 18px}
label{display:block;font-size:.88rem;color:var(--muted);margin:0 0 12px}
label>select,label>input[type=text],label>input[type=number],label>input[type=datetime-local]{display:block;width:100%;margin-top:5px}
input[type=text],input[type=search],input[type=number],input[type=datetime-local],select,textarea{font:inherit;color:var(--text);background:var(--card);border:1px solid var(--line);border-radius:10px;padding:9px 11px;min-height:40px}
input:focus,select:focus,textarea:focus,button:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
textarea{width:100%;min-height:170px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92rem;line-height:1.45}
.btn{font:inherit;font-size:.93rem;border:1px solid var(--accent);background:var(--accent);color:var(--accent-ink);padding:8px 14px;border-radius:10px;cursor:pointer;min-height:38px}
.btn:hover{filter:brightness(1.07)}.btn.ghost{background:transparent;color:var(--accent)}.btn.ghost:hover{background:var(--accent-soft)}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:0 0 12px}
.grid-3{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:end}.grid-3 .btn{margin-bottom:12px}
.two{display:grid;gap:16px;grid-template-columns:1fr 1fr}
@media (max-width:720px){.two{grid-template-columns:1fr}.grid-3{grid-template-columns:1fr}.grid-3 .btn{margin:0 0 12px}}
.result{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--code);border-radius:10px;padding:12px 14px;font-size:1.25rem;font-weight:600;word-break:break-all}
.stats{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));margin:14px 0 0}
.stat{background:var(--code);border-radius:10px;padding:10px 12px}.stat b{display:block;font-size:1.35rem;line-height:1.2}.stat span{font-size:.82rem;color:var(--muted)}
table{border-collapse:collapse;width:100%;font-size:.93rem}td,th{text-align:left;padding:7px 8px;border-bottom:1px solid var(--line)}th{color:var(--muted);font-weight:500}td.num{font-variant-numeric:tabular-nums}
code,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--code);border-radius:6px;padding:1px 6px;font-size:.92em}
.status{margin-top:10px;font-size:.93rem;min-height:1.4em}.status.ok{color:var(--ok)}.status.err{color:var(--err)}
.note{color:var(--muted);font-size:.88rem;margin-top:26px}
.meter{height:8px;border-radius:99px;background:var(--code);overflow:hidden;margin:8px 0 4px}.meter i{display:block;height:100%;width:0;background:var(--err);transition:width .2s,background .2s}
.swatch{height:84px;border-radius:12px;border:1px solid var(--line);margin:0 0 14px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 0}.chip{font-size:.85rem;background:var(--code);border-radius:99px;padding:3px 10px}
.rel{margin:0;padding:0;list-style:none}.rel li{padding:6px 0;border-bottom:1px solid var(--line)}.rel li:last-child{border:0}
.timeline{border-left:2px solid var(--line);margin:8px 0 0 6px;padding-left:18px}.timeline article{position:relative;margin:0 0 22px}.timeline article:before{content:"";position:absolute;left:-25px;top:7px;width:10px;height:10px;border-radius:50%;background:var(--accent)}
.timeline h3{margin:0;font-size:1.05rem}.timeline time{color:var(--muted);font-size:.88rem}.timeline ul{margin:6px 0 0 18px;padding:0}
.site-footer{border-top:1px solid var(--line);background:var(--card);color:var(--muted);font-size:.9rem}
.foot{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;padding-top:18px;padding-bottom:18px}.foot .links{display:flex;gap:16px}
.hero{padding:6px 0 10px}.hero .lead{max-width:640px}
.hidden{display:none!important}
.feat{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.feat div{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px}.feat h3{margin:0 0 4px;font-size:1rem}.feat p{margin:0;color:var(--muted);font-size:.93rem}