/* Layout: night road. Asphalt ground with a yellow lane line down the left edge; tool menu = row of blue Russian service road signs; inputs on the asphalt; answer = backlit instrument-cluster readout. Single deliberate dark look. */
:root{
  color-scheme:light;
  --asphalt:#eceef2; --asphalt-2:#ffffff; --field:#ffffff; --line:#cdd2da;
  --paint:#15181e; --muted:#5b616c; --yellow:#1f5fb8; --yellow-ink:#ffffff; --lane:#3b4250;
  --sign:#1f5fb8; --amber:#15181e; --green:#16794a; --red:#c8382a; --cluster:#1f5fb8;
  --f-display:"Russo One","Arial Black",system-ui,sans-serif;
  --f-body:"Manrope",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-num:"Tektur","Russo One",ui-monospace,monospace;
}
*{box-sizing:border-box}
html{background:var(--asphalt)}
body{color:var(--paint);font-family:var(--f-body);font-size:16px;line-height:1.5;
  background:
    radial-gradient(1200px 500px at 70% -10%, rgb(31 95 184 / .07), transparent 60%),
    var(--asphalt);
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:0 56px;min-height:100%}
.road{max-width:640px;margin:0 auto;position:relative;padding-left:26px}
.road::before{content:"";position:absolute;left:0;top:0;bottom:0;width:12px;border-radius:2px;
  background:repeating-linear-gradient(to bottom,#fff 0 30px,transparent 30px 52px) center/3px 100% no-repeat,var(--lane)}
.wrap{display:grid;gap:22px}

/* header */
.top{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;padding-top:26px;flex-wrap:wrap}
.brand{font:400 clamp(1.5rem,6vw,2.1rem)/1 var(--f-display);letter-spacing:.01em;text-transform:uppercase;margin:0}
.brand em{font-style:normal;color:var(--sign)}
.km{font:500 12px var(--f-num);color:var(--muted);letter-spacing:.12em;text-transform:uppercase;border:1px solid var(--line);background:#fff;padding:5px 8px;border-radius:4px}

/* service-sign menu */
.signs{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
.signs a{text-decoration:none;color:var(--paint);display:grid;justify-items:center;gap:7px;font-size:12.5px;font-weight:600;text-align:center;line-height:1.2}
.plate{width:100%;max-width:84px;aspect-ratio:3/4;background:var(--sign);border-radius:7px;padding:8px 8px 0;display:grid;grid-template-rows:auto 1fr;box-shadow:0 0 0 2px #fff inset,0 0 0 1px #17478a,0 5px 12px rgb(20 40 80 / .18);transition:transform .15s}
.plate .sq{background:#fff;border-radius:3px;aspect-ratio:1;display:grid;place-items:center}
.plate svg{width:68%;height:68%}
.plate .cap{color:#fff;font:400 10px/1 var(--f-display);display:grid;place-items:center;letter-spacing:.04em}
.signs a:hover .plate{transform:translateY(-2px)}
.signs a[aria-current="page"] .plate{box-shadow:0 0 0 2px #fff inset,0 0 0 3px var(--asphalt),0 0 0 6px var(--paint),0 6px 16px rgb(20 40 80 / .3)}
.signs a[aria-current="page"]{color:var(--sign)}
.signs a:focus-visible{outline:none}
.signs a:focus-visible .plate{outline:3px solid var(--yellow);outline-offset:4px}

/* tool */
.tool{display:grid;gap:20px}
.tool>header{border-top:2px dashed var(--line);padding-top:20px}
h1{font:400 clamp(1.35rem,5.2vw,1.9rem)/1.15 var(--f-display);margin:0;text-wrap:balance;text-transform:uppercase}
h1+p{margin:8px 0 0;color:var(--muted);font-size:16px}
.card{display:grid;gap:18px}
.q{display:block;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.three{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.sec{font:400 14px var(--f-display);color:var(--sign);text-transform:uppercase;letter-spacing:.04em;display:flex;align-items:center;gap:10px;margin-bottom:-6px}
.sec::after{content:"";flex:1;height:2px;background:repeating-linear-gradient(90deg,var(--line) 0 10px,transparent 10px 18px)}

.seg{display:flex;background:#dde1e7;border-radius:999px;padding:4px;gap:4px}
.seg button{flex:1;border:0;background:none;color:var(--paint);font:600 15px var(--f-body);padding:10px 8px;border-radius:999px;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--yellow);color:var(--yellow-ink)}

select,input{width:100%;min-width:0;font:600 17px var(--f-body);color:var(--paint);background-color:var(--field);border:0;border-bottom:2px solid var(--line);border-radius:8px 8px 2px 2px;padding:12px}
select,input{box-shadow:0 1px 2px rgb(20 30 50 / .06)}
select:hover,input:hover{border-bottom-color:var(--muted)}
select{appearance:none;-webkit-appearance:none;cursor:pointer;padding-right:34px;
  background-image:linear-gradient(45deg,transparent 50%,var(--sign) 50%),linear-gradient(-45deg,transparent 50%,var(--sign) 50%);
  background-size:6px 6px,6px 6px;background-position:calc(100% - 18px) 50%,calc(100% - 12px) 50%;background-repeat:no-repeat}
select option,select optgroup{background:var(--asphalt-2);color:var(--paint)}
input{font-family:var(--f-num);font-weight:500;font-variant-numeric:tabular-nums}
select:focus-visible,input:focus-visible{outline:none;border-bottom-color:var(--sign)}
button:focus-visible{outline:2px solid var(--sign);outline-offset:2px}
.check{display:flex;gap:10px;align-items:flex-start;font-size:15px;cursor:pointer}
.check input{width:20px;height:20px;padding:0;margin-top:2px;accent-color:var(--yellow);flex:none}

.drinks{display:grid;gap:10px}
.drow{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr) 44px;gap:8px;align-items:center}
.del{height:47px;border:1px solid var(--line);background:var(--field);color:var(--muted);border-radius:8px;font-size:20px;cursor:pointer}
.del:hover:not(:disabled){color:var(--red)}
.del:disabled{opacity:.3;cursor:default}
.add{justify-self:start;border:2px dashed var(--line);background:none;color:var(--paint);font:600 15px var(--f-body);padding:9px 14px;border-radius:8px;cursor:pointer;margin-top:2px}
.add:hover{border-color:var(--sign);color:var(--sign)}

/* instrument cluster readout */
.answer{position:relative;border-radius:20px;padding:22px 20px 20px;text-align:center;display:grid;gap:4px;overflow:hidden;
  background:var(--sign);color:#fff;
  box-shadow:0 0 0 3px #fff inset,0 0 0 5px #17478a inset,0 12px 28px rgb(23 71 138 / .25)}
.answer::before{content:"";position:absolute;left:18px;right:18px;top:10px;height:8px;
  background:repeating-linear-gradient(90deg,#fff 0 2px,transparent 2px 12px);opacity:.35}
.answer .k{font-size:11.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#cfe0f7;margin-top:8px}
.answer .big{font:700 clamp(2rem,9vw,3rem)/1.1 var(--f-num);color:#fff;font-variant-numeric:tabular-nums}
.answer .sub{font-size:15px;color:#e3ecf9}
.answer.ok{background:#1f7a4c;color:#fff;box-shadow:0 0 0 3px #fff inset,0 0 0 5px #0f4a2c inset,0 12px 28px rgb(15 74 44 / .25)}
.answer.ok::before{background:repeating-linear-gradient(90deg,#fff 0 2px,transparent 2px 12px)}
.answer.ok .k,.answer.ok .sub,.answer.ok .big{color:#fff}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:1px;margin-top:14px;text-align:left;background:rgb(255 255 255 / .2);border-radius:12px;overflow:hidden}
.facts:empty{display:none}
.facts div{background:rgb(255 255 255 / .12);padding:10px 12px;color:#fff}
.facts b{color:#fff!important}.facts span{color:#cfe0f7!important}
.facts b{display:block;font:500 17px var(--f-num);color:var(--paint);font-variant-numeric:tabular-nums}
.facts span{font-size:12.5px;color:var(--muted)}
.answer.ok .facts div{background:rgb(255 255 255 / .12)}
.answer.ok .facts b{color:#fff}.answer.ok .facts span{color:#d4eadc}
.note{font-size:13.5px;color:var(--muted);margin:0;padding-left:14px;border-left:3px solid var(--sign)}

footer{border-top:2px dashed var(--line);padding-top:16px;font-size:13px;color:var(--muted);display:grid;gap:6px}
footer p{margin:0}
@media (max-width:440px){
  .road{padding-left:18px}.road::before{left:0;width:4px}
  .signs{gap:6px}.signs a{font-size:11px}.plate{padding:5px 5px 0;border-radius:5px}.plate .cap{font-size:8px}
  .three{grid-template-columns:1fr 1fr}.three>:last-child{grid-column:1/-1}
}
@media (prefers-reduced-motion:reduce){.plate{transition:none}}

/* ---- multi-page additions ---- */
.top{flex-direction:column;align-items:flex-start;gap:6px}
.tagline{font-size:15px;color:var(--muted);font-weight:500}
@media (hover:none){.tile:hover,.signs a:hover .plate{transform:none}}
a,button,select,summary{-webkit-tap-highlight-color:rgb(31 95 184 / .15);touch-action:manipulation}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0}
.wrap>*{min-width:0}
.text>*,.legal>*,.more>*{min-width:0;max-width:100%}
.check{min-height:44px;align-items:center}
.check input{width:24px!important;height:24px!important;margin:0!important}
h1,h2,.tile b{overflow-wrap:break-word;-webkit-hyphens:auto;hyphens:auto}
.tile>span{min-width:0}
.top a{text-decoration:none;color:inherit}
.road{max-width:800px}
.tool,.crumbs,.hero,.tiles,.why,.more,.legal,footer{max-width:640px}
.signs{display:flex;overflow-x:auto;gap:10px;scrollbar-width:none;padding:8px 6px 6px;margin:-8px -6px -6px;scroll-snap-type:x proximity;
  -webkit-mask-image:linear-gradient(90deg,#000 88%,transparent);mask-image:linear-gradient(90deg,#000 88%,transparent)}
@media (min-width:860px){.signs{-webkit-mask-image:none;mask-image:none;overflow:visible}}
.signs::-webkit-scrollbar{display:none}
.signs a{flex:0 0 74px;min-width:0;scroll-snap-align:start}
.signs .plate{max-width:none}
@media (max-width:440px){.signs a{flex-basis:64px}}
.answer .big{word-break:break-word}
.crumbs{font-size:13px;color:var(--muted);display:flex;gap:6px;flex-wrap:wrap;margin-bottom:-10px}
.crumbs a{color:var(--sign);text-decoration:none}
.text{display:grid;gap:12px;max-width:66ch;border-top:2px dashed var(--line);padding-top:22px}
.text h2{font:400 1.15rem/1.25 var(--f-display);text-transform:uppercase;margin:12px 0 0;text-wrap:balance}
.text h2:first-child{margin-top:0}
.text p,.text li{margin:0;color:#2d323b}
.text ul{margin:0;padding-left:20px;display:grid;gap:6px}
.tbl{overflow-x:auto;background:#fff;border-radius:12px;border:1px solid var(--line)}
.tbl table{border-collapse:collapse;width:100%;font-size:15px}
.tbl th,.tbl td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl th{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.tbl tr:last-child td{border-bottom:0}
.tbl td:not(:first-child){font-family:var(--f-num);font-variant-numeric:tabular-nums}
details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0}
details+details{margin-top:-4px}
summary{cursor:pointer;font-weight:700;list-style-position:outside;padding:13px 14px 13px 30px;min-height:48px;display:block;position:relative;list-style:none}
summary::-webkit-details-marker{display:none}
summary::before{content:"+";position:absolute;left:12px;top:12px;font-weight:700;color:var(--sign)}
details[open] summary::before{content:"−"}
summary:focus-visible{outline:2px solid var(--sign);outline-offset:3px;border-radius:4px}
details p{margin:0;padding:0 14px 14px 30px;color:#2d323b}
.more{display:grid;gap:10px}
.more h2{font:400 1rem var(--f-display);text-transform:uppercase;margin:0}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips a{text-decoration:none;color:var(--paint);background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-weight:600;font-size:14px}
.chips a:hover{border-color:var(--sign);color:var(--sign)}
@media (max-width:360px){.two{grid-template-columns:1fr}.drow{grid-template-columns:minmax(0,1fr) 44px}.drow select:first-child{grid-column:1/-1}}
/* articles */
.lead{font-size:18px;line-height:1.55;color:var(--paint);margin:0;border-left:4px solid var(--sign);padding:4px 0 4px 14px}
.text h3{font:700 14px var(--f-body);text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:6px 0 -4px}
.text ol{margin:0;padding-left:22px;display:grid;gap:8px}
.cta{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;text-decoration:none;background:var(--sign);color:#fff;border-radius:14px;padding:16px 18px;box-shadow:0 0 0 3px #fff inset,0 0 0 5px #17478a inset}
.cta span{flex:1;min-width:200px;font-weight:600}
.cta b{background:#fff;color:var(--sign);border-radius:999px;padding:10px 16px;max-width:100%;text-align:center;min-height:44px;display:inline-flex;align-items:center}
.cta:hover b{background:#e6eefa}
.alist{display:grid;gap:10px}
.alist a{display:block;text-decoration:none;color:var(--paint);background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.alist a:hover{border-color:var(--sign)}
.alist b{display:block;font-weight:700}
.alist span{display:block;color:var(--muted);font-size:14px;margin-top:3px}
/* home */
.hero{display:grid;gap:10px;border-top:2px dashed var(--line);padding-top:22px}
.hero h1{font-size:clamp(1.6rem,6.5vw,2.4rem)}
.hero p{margin:0;color:var(--muted);font-size:17px;max-width:52ch}
.tiles{display:grid;gap:12px}
.tile{display:grid;grid-template-columns:72px minmax(0,1fr);gap:16px;align-items:center;text-decoration:none;color:var(--paint);background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;transition:border-color .15s,transform .15s}
.tile:hover{border-color:var(--sign);transform:translateY(-1px)}
.tile .plate{max-width:72px}
.tile b{display:block;font:400 1.05rem/1.2 var(--f-display);text-transform:uppercase}
.tile span.d{display:block;color:var(--muted);font-size:15px;margin-top:4px}
.why{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px}
.why div{border-left:3px solid var(--sign);padding:2px 0 2px 12px}
.why b{display:block}
.why span{color:var(--muted);font-size:14px}
/* legal */
.legal{display:grid;gap:12px;max-width:66ch}
.legal h2{font:400 1.05rem var(--f-display);text-transform:uppercase;margin:10px 0 0}
.legal p,.legal li{margin:0;color:#2d323b}
.legal ul{margin:0;padding-left:20px;display:grid;gap:6px}
/* footer */
footer nav{display:flex;flex-wrap:wrap;gap:0 18px}
footer a{color:var(--paint);display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:44px}
/* cookie banner */
.cookie{position:fixed;left:0;right:0;bottom:0;z-index:20;padding:12px max(16px,env(safe-area-inset-right,0px)) calc(12px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px));background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px rgb(20 30 50 / .08)}
.cookie div{max-width:640px;margin:0 auto;display:flex;gap:12px;align-items:center;flex-wrap:wrap;font-size:14px;color:#2d323b}
.cookie p{margin:0;flex:1;min-width:220px}
.cookie .cbtn{display:flex;gap:8px;flex-wrap:wrap}
.cookie button{border:0;background:var(--sign);color:#fff;font:700 15px var(--f-body);padding:10px 18px;min-height:44px;border-radius:999px;cursor:pointer}
.cookie button.no{background:#e3e7ee;color:var(--paint)}
@media (prefers-reduced-motion:reduce){.tile{transition:none}}