:root{--bg:#fff;--fg:#0a0a0a;--mut:#6b6b6b;--card:#fff;--soft:#f5f5f4;--bd:#e7e5e4;--ac:#ff4f1f;--ac2:#ff4f1f;--g:var(--ac);--r:16px}
:root[data-theme=dark]{--bg:#0a0a0a;--fg:#fafafa;--mut:#a3a3a3;--card:#111;--soft:#171717;--bd:#2a2a2a;--ac:#ff6a3d;--ac2:#ff6a3d}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--fg);line-height:1.7;-webkit-font-smoothing:antialiased}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}a{color:var(--ac)}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--bg);padding:8px 12px;border:1px solid var(--bd);border-radius:8px;z-index:99}
header{position:sticky;top:0;z-index:20;background:var(--bg);border-bottom:1px solid var(--bd)}
.bar{display:flex;align-items:center;gap:22px;flex-wrap:wrap;padding:16px 20px}
.logo{font-weight:800;font-size:1.2rem;text-decoration:none;letter-spacing:-.03em;color:var(--fg)}.logo::after{content:".";color:var(--ac);font-size:1.6rem;line-height:0}
header nav{display:flex;gap:4px;flex:1;flex-wrap:wrap}header nav a{text-decoration:none;color:var(--mut);font-weight:500;font-size:.95rem;padding:6px 12px;border-radius:8px;transition:color .2s,background .2s}
header nav a:hover{color:var(--fg);background:var(--soft)}
#theme{width:40px;height:40px;padding:0;border-radius:50%;font-size:1.05rem;display:grid;place-items:center}
button{font:inherit;font-weight:600;padding:11px 22px;border:1px solid var(--bd);border-radius:12px;background:var(--card);color:var(--fg);cursor:pointer;transition:transform .15s,border-color .2s,background .2s,color .2s}
button:hover{border-color:var(--fg);transform:translateY(-1px)}button:active{transform:none}
.pri{background:var(--ac);color:#fff;border-color:var(--ac)}.pri:hover{border-color:var(--fg);background:var(--ac);filter:brightness(1.06)}
:focus-visible{outline:3px solid var(--ac);outline-offset:3px;border-radius:10px}
.hero{padding:72px 0 28px;text-align:left}.hero h1{max-width:820px;margin:14px 0}.hero p{max-width:600px;margin:0 0 22px;color:var(--mut);font-size:1.15rem}
.badge{display:inline-block;padding:5px 14px;border-radius:999px;background:var(--soft);border:1px solid var(--bd);font-size:.82rem;font-weight:600;letter-spacing:.02em}
h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.08;letter-spacing:-.04em;font-weight:800;margin:.4em 0}h2{letter-spacing:-.03em;font-size:1.6rem;margin-top:2em}h3{letter-spacing:-.01em}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px;margin:18px 0}
.card{position:relative;display:block;padding:24px;background:var(--card);border:1px solid var(--bd);border-radius:var(--r);text-decoration:none;color:var(--fg);transition:transform .25s,border-color .25s,background .25s}
.card:hover{transform:translateY(-4px);border-color:var(--ac)}.card h3{margin:16px 0 4px}.card p{color:var(--mut);margin:0;font-size:.95rem}
.ic{display:grid;place-items:center;width:48px;height:48px;border-radius:12px;background:var(--soft);border:1px solid var(--bd);font-size:1.4rem;transition:transform .3s,background .3s}
.card:hover .ic{transform:rotate(-6deg) scale(1.06);background:var(--ac)}
.tool{background:var(--card);border:1px solid var(--bd);border-radius:24px;padding:clamp(20px,4vw,44px);text-align:center;margin:20px 0 8px}
.big{font-size:clamp(2.2rem,9vw,5rem);font-weight:800;letter-spacing:-.04em;font-variant-numeric:tabular-nums;color:var(--fg);line-height:1.2}
.btns{display:flex;gap:12px;justify-content:center;align-items:flex-end;flex-wrap:wrap;margin:16px 0}
.hint,.crumb{color:var(--mut);font-size:.9rem}.crumb{margin-top:20px}.crumb a{color:var(--mut)}
label{display:inline-flex;flex-direction:column;text-align:left;font-size:.82rem;font-weight:600;color:var(--mut);gap:6px}
input,select,textarea{font:inherit;padding:11px 14px;border:1px solid var(--bd);border-radius:10px;background:var(--bg);color:var(--fg)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--ac);border-color:transparent}
#laps,#list{max-width:360px;margin:14px auto;text-align:left;padding-left:22px}#list{list-style:none;padding:0}#list li{padding:8px 0;border-bottom:1px solid var(--bd)}
.x{float:right;padding:0 10px;border-radius:8px}#ring{font-weight:700;color:var(--ac)}
.content{max-width:740px;background:var(--card);border:1px solid var(--bd);border-radius:20px;padding:clamp(20px,4vw,40px);margin:24px 0}
.content h2:first-child,.content h1:first-child{margin-top:0}.content li{margin:6px 0}main>.content{margin-left:auto;margin-right:auto}
footer{border-top:1px solid var(--bd);margin-top:64px;padding:28px 0;color:var(--mut);font-size:.92rem}
footer nav{display:flex;gap:6px 18px;flex-wrap:wrap;margin-bottom:8px}footer a{text-decoration:none;color:var(--mut)}footer a:hover{color:var(--ac)}
#cc{position:fixed;bottom:14px;left:14px;right:14px;max-width:580px;background:var(--card);border:1px solid var(--fg);border-radius:16px;padding:18px;z-index:50}#cc[hidden]{display:none}#cc p{margin:0 0 12px;font-size:.92rem}#cc div{display:flex;gap:8px;flex-wrap:wrap}#cc button{padding:8px 16px}
.rv{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}.rv.in{opacity:1;transform:none}
.pop{animation:pop .4s ease}@keyframes pop{from{opacity:0;transform:scale(.95)}to{opacity:1;transform:none}}
body,.card,.tool,.content,header{transition:background-color .3s,color .3s,border-color .3s}
#pl{position:fixed;inset:0;z-index:999;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;background:var(--bg);animation:plo .5s ease 2.6s forwards}#pl.out{opacity:0;visibility:hidden;transition:opacity .5s,visibility .5s}
#pl svg{animation:plf 1.6s ease-in-out infinite}#pl svg rect:first-of-type{fill:var(--ac)}#pl b{font-size:1.5rem;letter-spacing:-.03em;color:var(--fg)}#pl span{color:var(--mut);font-size:.9rem}
.rg{stroke-dasharray:164;stroke-dashoffset:164;animation:dr 1.2s ease forwards}.hd{transform-origin:48px 50px;animation:sp 2s linear infinite}
@keyframes dr{to{stroke-dashoffset:0}}@keyframes sp{to{transform:rotate(360deg)}}@keyframes plf{50%{transform:translateY(-6px)}}@keyframes plo{to{opacity:0;visibility:hidden}}
.calc-in{width:100%;font:inherit;font-size:1.4rem;text-align:right;padding:14px;border-radius:12px}.keys{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:10px}.fkeys{grid-template-columns:repeat(auto-fit,minmax(64px,1fr))}.keys button{padding:12px 6px}.keys .fn{font-size:.85rem;background:var(--soft)}
#rows .btns{justify-content:center}
@media(max-width:600px){.bar{gap:10px}header nav a{padding:5px 9px;font-size:.88rem}button{padding:10px 16px}.hero{padding:44px 0 20px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto}.rv{opacity:1;transform:none}#pl svg,.hd,.pop,.rg{animation:none}.rg{stroke-dashoffset:0}}
.ad-slot{text-align:center;margin:0 auto}.ad-slot.on{margin:24px auto}.ad-slot.on::before{content:"Advertisement";display:block;color:var(--mut);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;margin-bottom:6px}.ad-slot[data-ad=banner].on{min-height:270px}.ad-slot iframe{max-width:100%}
#install{background:var(--ac);color:#fff;border-color:var(--ac);padding:8px 16px;font-size:.9rem}#install[hidden]{display:none}.toast{position:fixed;left:14px;right:14px;bottom:80px;max-width:420px;margin:0 auto;background:var(--fg);color:var(--bg);padding:12px 16px;border-radius:12px;z-index:60;font-size:.92rem}

:root,:root[data-theme=dark]{--bg:#0a0a12;--fg:#f4f4f8;--mut:#9a9ab0;--card:#12121d;--soft:#1a1a2a;--bd:#262638;--ac:#c6ff00;--ac2:#ff5a1f;--onac:#0a0a12;--g:linear-gradient(135deg,#c6ff00,#ff5a1f)}
:root[data-theme=light]{--bg:#f5f6ef;--fg:#12121a;--mut:#5d5d70;--card:#fff;--soft:#eceee4;--bd:#dcdfd0;--ac:#e84a0c;--ac2:#7aa800;--onac:#fff;--g:linear-gradient(135deg,#e84a0c,#ff8a00)}
body{background-image:radial-gradient(700px 360px at 12% -4%,rgba(198,255,0,.10),transparent),radial-gradient(600px 360px at 95% 0,rgba(255,90,31,.12),transparent);background-repeat:no-repeat}
:root[data-theme=light] body{background-image:radial-gradient(700px 360px at 12% -4%,rgba(232,74,12,.08),transparent)}
.pri,#install{color:var(--onac);font-weight:800}.pri:hover{filter:brightness(1.08);box-shadow:0 8px 30px -8px var(--ac)}
.cta{display:inline-block;padding:14px 30px;background:var(--ac);color:var(--onac);border:0;font-weight:800;border-radius:14px;text-decoration:none}.cta:hover{transform:translateY(-2px);box-shadow:0 10px 34px -8px var(--ac);border:0}
.hero h1{background:linear-gradient(100deg,var(--fg) 35%,var(--ac));-webkit-background-clip:text;background-clip:text;color:transparent}
.big{background:linear-gradient(90deg,var(--ac),var(--ac2));-webkit-background-clip:text;background-clip:text;color:transparent}
.card:hover{border-color:var(--ac);box-shadow:0 0 0 1px var(--ac),0 16px 44px -16px var(--ac)}.ic{background:linear-gradient(135deg,rgba(198,255,0,.18),rgba(255,90,31,.18));border-color:transparent}
.card:hover .ic{background:var(--g)}.badge{color:var(--ac);border-color:var(--ac)}.logo::after{color:var(--ac2)}
.strip{margin-top:18px;color:var(--mut);font-size:.95rem}.strip b{color:var(--ac);font-size:1.15rem}
#pl svg rect:first-of-type{fill:#c6ff00}#pl .rg,#pl .hd,#pl path{stroke:#0a0a12}#pl b{background:var(--g);-webkit-background-clip:text;background-clip:text;color:transparent}
header nav a:hover{color:var(--ac)}.tool{border-color:var(--bd);box-shadow:0 20px 60px -30px rgba(198,255,0,.18)}
.ic{width:52px;height:52px;border-radius:16px;border:1px solid var(--bd)}.ic svg{fill:none;stroke:var(--ac);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;transition:stroke .25s}.card:hover .ic svg{stroke:var(--onac)}
.sponsor{margin:6px 0;font-size:.85rem}.sponsor a{color:var(--mut)}.sponsor span{opacity:.7}
.sponsor-box{max-width:740px;margin:20px auto;padding:12px 16px;border:1px dashed var(--bd);border-radius:14px;display:flex;flex-wrap:wrap;gap:6px 16px;align-items:center;font-size:.9rem;color:var(--mut)}.sponsor-box span{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--mut)}.sponsor-box a{color:var(--ac);font-weight:600}.sponsor-box small{opacity:.7;font-size:.78rem}