/* SeptikYug Sochi — single stylesheet, no external fonts (system stack for LCP) */
:root{
  --ink:#0f1e1b; --ink-2:#3c534e; --ink-3:#6b807b;
  --bg:#ffffff; --bg-2:#f4f8f6; --bg-3:#e7f0ec;
  --brand:#0b7a63; --brand-dark:#065a49; --brand-l:#7fe3c6;
  --sea:#0e7490; --sun:#f2a900; --danger:#c2410c;
  --line:#dbe6e2; --rad:14px; --rad-l:22px;
  --sh:0 2px 8px rgba(9,40,34,.06); --sh-l:0 14px 40px rgba(9,40,34,.12);
  --wrap:1200px;
  --ff:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--ff);color:var(--ink);background:var(--bg);font-size:17px;line-height:1.6;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.18;margin:0 0 .5em;letter-spacing:-.02em;font-weight:800}
h1{font-size:clamp(28px,4.6vw,50px)}
h2{font-size:clamp(24px,3.4vw,38px)}
h3{font-size:clamp(19px,2.2vw,24px)}
p{margin:0 0 1em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.sec{padding:clamp(44px,6vw,84px) 0}
.sec--alt{background:var(--bg-2)}
.sec__head{max-width:820px;margin-bottom:34px}
.sec__eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:12px;font-weight:800;color:var(--brand);margin:0 0 10px}
.lead{font-size:clamp(17px,1.6vw,20px);color:var(--ink-2)}
.center{text-align:center;margin-left:auto;margin-right:auto}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:15px 26px;border-radius:999px;border:0;
  background:var(--brand);color:#fff;font:inherit;font-weight:700;cursor:pointer;transition:.18s;text-align:center;line-height:1.2}
.btn:hover{background:var(--brand-dark);text-decoration:none;transform:translateY(-1px)}
.btn--sm{padding:11px 18px;font-size:15px}
.btn--wide{width:100%}
.btn--ghost{background:transparent;color:var(--brand);box-shadow:inset 0 0 0 2px var(--brand)}
.btn--ghost:hover{background:var(--brand);color:#fff}
.btn--sun{background:var(--sun);color:#231a00}
.btn--sun:hover{background:#d99700}

/* header */
.hdr{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hdr__in{display:flex;align-items:center;gap:20px;min-height:72px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink)}
.logo:hover{text-decoration:none}
.logo__txt b{display:block;font-size:19px;font-weight:900;letter-spacing:-.02em}
.logo__txt b span{color:var(--brand)}
.logo__txt small{display:block;font-size:11px;color:var(--ink-3);line-height:1.2}
.nav{display:flex;gap:20px;margin-left:auto;font-size:15px;font-weight:600}
.nav a{color:var(--ink-2)}
.nav a:hover{color:var(--brand)}
.hdr__act{display:flex;align-items:center;gap:12px}
.hdr__tel{font-weight:800;color:var(--ink);white-space:nowrap;font-size:16px}
.hdr__tel small{display:block;font-size:11px;color:var(--ink-3);font-weight:600}
.burger{display:none;width:44px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;padding:10px 10px}
.burger span{display:block;height:2px;background:var(--ink);border-radius:2px;margin:3px 0}

/* hero */
.hero{position:relative;background:linear-gradient(135deg,#06382f 0%,#0b7a63 55%,#0e7490 100%);color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background:
  radial-gradient(900px 460px at 88% -10%,rgba(127,227,198,.32),transparent 62%),
  radial-gradient(700px 400px at -10% 110%,rgba(14,116,144,.5),transparent 60%)}
.hero__in{position:relative;z-index:2;padding:clamp(48px,6.5vw,92px) 0;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.hero__badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  padding:7px 15px;border-radius:999px;font-size:13px;font-weight:700;margin-bottom:18px}
.hero h1{color:#fff;margin-bottom:16px}
.hero h1 em{font-style:normal;color:var(--brand-l)}
.hero__sub{font-size:clamp(16px,1.7vw,20px);color:rgba(255,255,255,.9);max-width:620px}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin:26px 0 30px}
.hero__stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:620px}
.hero__stat{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:var(--rad);padding:14px 16px}
.hero__stat b{display:block;font-size:clamp(22px,2.6vw,30px);font-weight:900;color:var(--brand-l);line-height:1.1}
.hero__stat span{font-size:13px;color:rgba(255,255,255,.85)}
.hero__card{background:#fff;color:var(--ink);border-radius:var(--rad-l);padding:26px;box-shadow:var(--sh-l)}
.hero__card h2{font-size:21px;margin-bottom:6px}
.hero__card p{font-size:14px;color:var(--ink-2)}
.hero__card ul{margin:0 0 18px;padding:0;list-style:none;font-size:14.5px}
.hero__card li{padding:7px 0 7px 26px;position:relative;border-top:1px solid var(--line)}
.hero__card li::before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:900}

/* grids & cards */
.grid{display:grid;gap:20px}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--rad-l);padding:24px;box-shadow:var(--sh)}
.card h3{margin-bottom:8px}
.card p:last-child{margin-bottom:0}
.card__ic{width:46px;height:46px;border-radius:12px;background:var(--bg-3);color:var(--brand);display:grid;place-items:center;font-size:22px;margin-bottom:14px}

/* catalog */
.prod{background:#fff;border:1px solid var(--line);border-radius:var(--rad-l);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--sh);transition:.18s}
.prod:hover{box-shadow:var(--sh-l);transform:translateY(-3px)}
.prod__top{background:linear-gradient(160deg,#e7f0ec,#f7fbf9);padding:20px;position:relative;text-align:center}
.prod__badge{position:absolute;top:12px;left:12px;background:var(--sun);color:#231a00;font-size:11px;font-weight:800;padding:5px 10px;border-radius:999px;text-transform:uppercase;letter-spacing:.04em}
.prod__fig{width:96px;height:120px;margin:6px auto 0;border-radius:10px 10px 26px 26px;background:linear-gradient(180deg,#0b7a63,#0e7490);position:relative;box-shadow:inset 0 -14px 20px rgba(0,0,0,.18)}
.prod__fig::before{content:"";position:absolute;top:-9px;left:50%;transform:translateX(-50%);width:38px;height:12px;border-radius:6px 6px 0 0;background:#075f4d}
.prod__fig::after{content:"";position:absolute;left:12px;right:12px;bottom:16px;height:3px;background:rgba(255,255,255,.5);border-radius:2px;
  box-shadow:0 -10px 0 rgba(255,255,255,.28),0 -20px 0 rgba(255,255,255,.18)}
.prod__body{padding:20px;display:flex;flex-direction:column;flex:1}
.prod__name{font-size:20px;font-weight:800;margin:0 0 4px}
.prod__for{font-size:13.5px;color:var(--ink-3);margin-bottom:14px}
.prod__specs{list-style:none;margin:0 0 16px;padding:0;font-size:14px}
.prod__specs li{display:flex;justify-content:space-between;gap:10px;padding:7px 0;border-bottom:1px dashed var(--line)}
.prod__specs span{color:var(--ink-3)}
.prod__specs b{font-weight:700;text-align:right}
.prod__price{margin-top:auto}
.prod__price em{display:block;font-style:normal;font-size:12px;color:var(--ink-3)}
.prod__price b{font-size:25px;font-weight:900;color:var(--brand);letter-spacing:-.02em}
.prod .btn{margin-top:12px}

/* table */
.tbl-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--rad-l);background:#fff}
table{border-collapse:collapse;width:100%;min-width:640px;font-size:15px}
th,td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line)}
th{background:var(--bg-2);font-weight:800;font-size:14px}
tbody tr:last-child td{border-bottom:0}
td b{color:var(--brand)}

/* steps */
.steps{counter-reset:s;display:grid;gap:16px;grid-template-columns:repeat(5,1fr)}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--rad-l);padding:22px;counter-increment:s;position:relative}
.step::before{content:counter(s);display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:var(--brand);color:#fff;font-weight:900;margin-bottom:12px}
.step h3{font-size:17px}
.step p{font-size:14.5px;color:var(--ink-2);margin:0}

/* reviews */
.rev{background:#fff;border:1px solid var(--line);border-radius:var(--rad-l);padding:24px;display:flex;flex-direction:column;gap:10px}
.rev__stars{color:var(--sun);letter-spacing:2px}
.rev__txt{font-size:15.5px;color:var(--ink-2);margin:0}
.rev__who{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}
.rev__ava{width:42px;height:42px;border-radius:50%;background:var(--bg-3);color:var(--brand);display:grid;place-items:center;font-weight:900}
.rev__who b{display:block;font-size:15px}
.rev__who span{font-size:13px;color:var(--ink-3)}

/* faq */
.faq{max-width:900px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--rad);margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:18px 52px 18px 20px;font-weight:700;position:relative;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:24px;color:var(--brand);font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq__a{padding:0 20px 18px;color:var(--ink-2);font-size:15.5px}
.faq__a p:last-child{margin-bottom:0}

/* cta band */
.cta{background:linear-gradient(120deg,#06382f,#0b7a63);color:#fff;border-radius:var(--rad-l);padding:clamp(28px,4vw,52px);text-align:center}
.cta h2{color:#fff}
.cta p{color:rgba(255,255,255,.9);max-width:640px;margin-inline:auto}
.cta__btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:22px}

/* seo text + article */
.prose{max-width:800px;font-size:17.5px}
.prose h2{margin-top:1.6em}
.prose h3{margin-top:1.4em;font-size:21px}
.prose ul,.prose ol{padding-left:22px;margin:0 0 1.2em}
.prose li{margin-bottom:.45em}
.prose blockquote{margin:1.4em 0;padding:18px 22px;background:var(--bg-2);border-left:4px solid var(--brand);border-radius:0 var(--rad) var(--rad) 0;color:var(--ink-2)}
.prose blockquote p:last-child{margin:0}
.prose .tbl-scroll{margin:1.4em 0}
.note{background:var(--bg-3);border-radius:var(--rad);padding:18px 22px;margin:1.4em 0;font-size:16px}
.note b{color:var(--brand-dark)}

/* blog */
.crumbs{font-size:13.5px;color:var(--ink-3);padding:16px 0 0}
.crumbs a{color:var(--ink-3)}
.crumbs span{margin:0 6px}
.post{background:#fff;border:1px solid var(--line);border-radius:var(--rad-l);padding:22px;display:flex;flex-direction:column;transition:.18s}
.post:hover{box-shadow:var(--sh-l);transform:translateY(-2px);text-decoration:none}
.post__cat{font-size:11.5px;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--brand);margin-bottom:8px}
.post__t{font-size:18px;font-weight:800;color:var(--ink);margin:0 0 8px;line-height:1.3}
.post__d{font-size:14.5px;color:var(--ink-2);margin:0}
.post__more{margin-top:14px;font-size:14px;font-weight:700;color:var(--brand)}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.chip{padding:9px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--ink-2)}
.chip:hover,.chip--on{background:var(--brand);color:#fff;border-color:var(--brand);text-decoration:none}
.art-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px;align-items:start}
.aside{position:sticky;top:96px;display:grid;gap:18px}
.aside__box{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--rad-l);padding:22px}
.aside__box h3{font-size:18px}
.aside__box ul{list-style:none;margin:0;padding:0;font-size:15px}
.aside__box li{padding:7px 0;border-bottom:1px solid var(--line)}
.aside__box li:last-child{border:0}
.toc{font-size:15px}
.toc ol{margin:0;padding-left:20px}
.toc li{margin-bottom:6px}
.linkgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px}
.linkgrid a{background:#fff;border:1px solid var(--line);border-radius:10px;padding:11px 14px;font-size:14.5px;font-weight:600;color:var(--ink-2)}
.linkgrid a:hover{border-color:var(--brand);color:var(--brand);text-decoration:none}

/* quiz */
.quiz{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:16px}
.quiz[hidden]{display:none}
.quiz__ovl{position:absolute;inset:0;background:rgba(6,30,25,.62);backdrop-filter:blur(3px)}
.quiz__box{position:relative;background:#fff;border-radius:var(--rad-l);width:min(640px,100%);max-height:92vh;overflow-y:auto;padding:30px;box-shadow:var(--sh-l)}
.quiz__x{position:absolute;top:14px;right:14px;width:36px;height:36px;border:0;border-radius:50%;background:var(--bg-2);font-size:24px;line-height:1;cursor:pointer;color:var(--ink-2)}
.quiz__eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:11.5px;font-weight:800;color:var(--brand);margin:0 0 6px}
.quiz__head h2{font-size:23px;margin-bottom:14px}
.quiz__bar{height:6px;background:var(--bg-3);border-radius:99px;overflow:hidden}
.quiz__bar span{display:block;height:100%;background:var(--brand);transition:width .3s}
.quiz__count{font-size:13px;color:var(--ink-3);margin:8px 0 18px}
.quiz__step{border:0;padding:0;margin:0}
.quiz__q{font-size:19px;font-weight:800;padding:0;margin-bottom:6px}
.quiz__hint{font-size:14px;color:var(--ink-3);margin-bottom:16px}
.quiz__opts{display:grid;gap:10px}
.quiz__opt{text-align:left;padding:15px 18px;border:2px solid var(--line);background:#fff;border-radius:var(--rad);font:inherit;font-weight:600;cursor:pointer;transition:.15s}
.quiz__opt:hover{border-color:var(--brand);background:var(--bg-2)}
.quiz__f{display:block;margin-bottom:14px}
.quiz__f span{display:block;font-size:14px;font-weight:700;margin-bottom:6px}
.quiz__f input{width:100%;padding:14px 16px;border:2px solid var(--line);border-radius:var(--rad);font:inherit}
.quiz__f input:focus{outline:0;border-color:var(--brand)}
.quiz__chk{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--ink-3);margin-bottom:16px}
.quiz__res{background:var(--bg-2);border-radius:var(--rad);padding:14px 18px;font-size:14.5px;margin-bottom:18px}
.quiz__res b{color:var(--brand-dark)}
.quiz__nav{margin-top:16px}
.quiz__back{border:0;background:none;color:var(--ink-3);font:inherit;font-weight:600;cursor:pointer;padding:6px 0}
.quiz__done{text-align:center;padding:20px 0}
.quiz__done-ic{width:64px;height:64px;border-radius:50%;background:var(--brand);color:#fff;font-size:32px;display:grid;place-items:center;margin:0 auto 16px}

/* inline calc */
.calc{background:#fff;border:1px solid var(--line);border-radius:var(--rad-l);padding:26px;box-shadow:var(--sh)}
.calc__row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.calc label{display:block}
.calc label>span{display:block;font-size:14px;font-weight:700;margin-bottom:6px}
.calc select{width:100%;padding:13px 14px;border:2px solid var(--line);border-radius:var(--rad);font:inherit;background:#fff}
.calc__out{background:var(--bg-2);border-radius:var(--rad);padding:18px;text-align:center}
.calc__out b{display:block;font-size:30px;font-weight:900;color:var(--brand);letter-spacing:-.02em}
.calc__out small{color:var(--ink-3);font-size:13px}

/* fab */
.fab{position:fixed;right:16px;bottom:16px;z-index:70;display:none;gap:10px}
.fab__btn{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:22px;box-shadow:var(--sh-l)}
.fab__btn--tel{background:var(--brand)}
.fab__btn--wa{background:#25d366}
.fab__btn:hover{text-decoration:none}

/* footer */
.ftr{background:#06241e;color:rgba(255,255,255,.78);padding:52px 0 0;margin-top:0;font-size:15px}
.ftr__in{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px;padding-bottom:34px}
.ftr h3{color:#fff;font-size:16px;margin-bottom:12px}
.ftr a{color:rgba(255,255,255,.9)}
.ftr p{margin:0 0 8px}
.ftr__logo{font-size:22px;font-weight:900;color:#fff;margin-bottom:12px}
.ftr__logo span{color:var(--brand-l)}
.ftr__rate{color:var(--sun);font-weight:700}
.ftr__msg{display:flex;gap:10px;margin-top:14px}
.ftr__msg .btn--ghost{color:#fff;box-shadow:inset 0 0 0 2px rgba(255,255,255,.4)}
.ftr__bot{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.14);padding-top:18px;padding-bottom:22px;font-size:12.5px;color:rgba(255,255,255,.5)}

@media (max-width:1020px){
  .hero__in{grid-template-columns:1fr}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .art-layout{grid-template-columns:1fr}
  .aside{position:static}
  .nav{display:none}
  .burger{display:block}
  .ftr__in{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  body{font-size:16.5px}
  .hdr__tel{display:none}
  .grid--2,.grid--3,.grid--4,.steps,.calc__row{grid-template-columns:1fr}
  .hero__stats{grid-template-columns:1fr}
  .hero__cta .btn{width:100%}
  .fab{display:flex}
  .ftr__in{grid-template-columns:1fr}
  .quiz__box{padding:22px 18px}
  .sec{padding:40px 0}
}
/* mobile nav opened */
body.nav-open .nav{display:flex;position:fixed;inset:72px 0 auto;flex-direction:column;background:#fff;padding:18px 20px;gap:0;border-bottom:1px solid var(--line);box-shadow:var(--sh-l);z-index:59}
body.nav-open .nav a{padding:13px 0;border-bottom:1px solid var(--line);font-size:17px}
body.no-scroll{overflow:hidden}
:focus-visible{outline:3px solid var(--sea);outline-offset:2px}