:root{
  --blue:#51b2d1; --blue-l:#71bdd8; --blue-d:#2b5772;
  --ink:#3d3d3d; --green:#58ba95; --bg:#f4f8fa; --line:#dbe9f0;
  --r:14px; --shadow:0 10px 30px rgba(43,87,114,.12);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.55;font-size:16px}
img{max-width:100%;display:block}
a{color:var(--blue-d)}
.container{width:min(1140px,100% - 32px);margin-inline:auto}
.container--narrow{width:min(760px,100% - 32px)}
.center{text-align:center;margin-top:24px}

.btn{display:inline-block;border:0;cursor:pointer;background:var(--blue);color:#fff;font-weight:700;font-size:16px;padding:14px 28px;border-radius:12px;text-decoration:none;transition:.2s;box-shadow:0 6px 18px rgba(81,178,209,.35)}
.btn:hover{background:var(--blue-d);transform:translateY(-1px)}
.btn--full{width:100%}
.btn--small{padding:10px 18px;font-size:14px}
.hp{position:absolute;left:-9999px;opacity:0;height:0;width:0}

.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header__in{display:flex;align-items:center;gap:16px;padding:12px 0;flex-wrap:wrap}
.logo{text-decoration:none;color:var(--ink);line-height:1.15}
.logo__top{display:block;font-size:22px;font-weight:800;color:var(--blue-d);letter-spacing:.5px}
.logo__bottom{display:block;font-size:11px;color:var(--blue);letter-spacing:1.5px;text-transform:uppercase}
.header__contacts{margin-left:auto;text-align:right}
.header__phone{font-size:18px;font-weight:800;color:var(--ink);text-decoration:none}
.header__hours{font-size:12px;color:#789}

.hero{background:linear-gradient(135deg,var(--blue-d) 0%,#1d3d52 100%);color:#fff;padding:64px 0}
.hero__in{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.hero__badge{display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);padding:6px 14px;border-radius:99px;font-size:13px;margin-bottom:18px}
.hero h1{font-size:clamp(26px,4vw,42px);line-height:1.15;font-weight:800}
.hero h1 span{color:var(--blue-l)}
.hero__sub{margin:18px 0;font-size:17px;color:#d9ecf4}
.hero__proof{list-style:none;display:flex;gap:22px;flex-wrap:wrap}
.hero__proof li{font-size:14px;color:#cfe6ef;max-width:170px}
.hero__proof b{display:block;font-size:20px;color:#fff}

.card{background:#fff;border-radius:var(--r);box-shadow:var(--shadow);padding:28px}
.hero__form{color:var(--ink)}
.hero__form h3{margin-bottom:6px;font-size:20px}
.hero__form p{font-size:14px;color:#678;margin-bottom:16px}
.hero__form input,.hero__form textarea,.contacts__form input,.contacts__form textarea{
  width:100%;border:1.5px solid var(--line);border-radius:10px;padding:13px 14px;font-size:15px;margin-bottom:12px;font-family:inherit;background:#fbfdfe}
.hero__form input:focus,.contacts__form input:focus,.contacts__form textarea:focus{outline:0;border-color:var(--blue)}
.hero__form small,.contacts__form small,.calc small{display:block;font-size:11px;color:#89a;margin-top:10px}

.facts{background:var(--bg);padding:34px 0;border-bottom:1px solid var(--line)}
.facts__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.fact b{display:block;font-size:clamp(20px,2.6vw,30px);color:var(--blue-d)}
.fact span{font-size:13px;color:#678}

.section{padding:64px 0}
.section--alt{background:var(--bg)}
.h2{font-size:clamp(24px,3vw,34px);color:var(--blue-d);margin-bottom:10px;text-align:center}
.section__sub{text-align:center;color:#789;margin-bottom:32px}

.steps{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.steps li{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 18px}
.steps b{display:block;font-size:26px;color:var(--blue);margin-bottom:8px}
.steps h4{margin-bottom:6px;color:var(--blue-d)}
.steps p{font-size:13.5px;color:#678}

.tabs__nav{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-bottom:20px}
.tabs__btn{border:1.5px solid var(--blue);background:#fff;color:var(--blue-d);padding:9px 18px;border-radius:99px;cursor:pointer;font-size:14px;font-weight:600;transition:.15s}
.tabs__btn.is-active{background:var(--blue);color:#fff}
.tabs__panel{display:none}
.tabs__panel.is-active{display:block;animation:fade .3s}
@keyframes fade{from{opacity:0}to{opacity:1}}
.price{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.price th{background:var(--blue-d);color:#fff;text-align:left;padding:12px 16px;font-size:14px}
.price td{padding:12px 16px;border-bottom:1px solid var(--line);font-size:15px}
.price td:last-child{white-space:nowrap;font-weight:700;color:var(--blue-d)}
.price tr:hover td{background:#f4fafc}

.works{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.works img{border-radius:10px;aspect-ratio:4/3;object-fit:cover;width:100%;transition:.25s}
.works img:hover{transform:scale(1.03)}
.clients{margin-top:34px;text-align:center}
.clients p{color:#789;font-size:14px;margin-bottom:14px}
.clients__row{display:flex;justify-content:center;align-items:center;gap:26px;flex-wrap:wrap}
.clients__row img{max-height:44px;width:auto;filter:grayscale(1);opacity:.75}

.calc__row{margin-bottom:22px}
.calc__label{display:block;font-weight:600;margin-bottom:10px;color:var(--blue-d)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:1.5px solid var(--line);background:#fbfdfe;color:var(--ink);padding:9px 16px;border-radius:99px;cursor:pointer;font-size:14px;transition:.15s}
.chip.is-active{border-color:var(--blue);background:var(--blue);color:#fff}
.calc__range{width:100%;accent-color:var(--blue);height:34px}

.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.reviews img{border-radius:var(--r);box-shadow:var(--shadow);border:1px solid var(--line)}

.guarantees{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.gcard{background:#fff;border-radius:var(--r);padding:24px;border-top:4px solid var(--green);box-shadow:var(--shadow)}
.gcard b{display:block;color:var(--blue-d);margin-bottom:8px;font-size:17px}
.gcard p{font-size:14px;color:#678}

.contacts{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contacts__info p{margin-bottom:18px;font-size:15px}
.contacts__info a{font-weight:700;text-decoration:none;color:var(--blue-d);font-size:18px}

.footer{background:var(--blue-d);color:#bcd8e4;padding:22px 0;font-size:13.5px}
.footer__in{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.footer a{color:#fff}

.messengers{position:fixed;right:16px;bottom:96px;display:flex;flex-direction:column;gap:10px;z-index:60}
.msg{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;color:#fff;text-decoration:none;box-shadow:0 6px 16px rgba(0,0,0,.25);transition:.2s}
.msg:hover{transform:scale(1.08)}
.msg svg{width:28px;height:28px}
.msg--wa{background:#25d366}
.msg--tg{background:#2aa3db}
.msg--max{background:#8b3dff}

.chat-fab{position:fixed;right:16px;bottom:24px;width:60px;height:60px;border-radius:50%;border:0;background:var(--blue);color:#fff;cursor:pointer;z-index:70;box-shadow:0 8px 22px rgba(81,178,209,.5);display:grid;place-items:center}
.chat-fab svg{width:30px;height:30px}
.chat{position:fixed;right:16px;bottom:96px;width:min(360px,calc(100vw - 32px));height:480px;background:#fff;border-radius:16px;box-shadow:0 18px 50px rgba(0,0,0,.28);z-index:71;display:flex;flex-direction:column;overflow:hidden}
.chat__head{background:var(--blue-d);color:#fff;padding:14px 16px;display:flex;justify-content:space-between;align-items:center}
.chat__head button{background:none;border:0;color:#fff;font-size:22px;cursor:pointer;line-height:1}
.chat__body{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:8px;background:var(--bg)}
.msg-bubble{max-width:85%;padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.45}
.msg-bubble--out{background:#fff;align-self:flex-start;border-bottom-left-radius:4px;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.msg-bubble--in{background:var(--blue);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.chat__quick{padding:10px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:8px}
.chat__quick button{border:1.5px solid var(--blue);background:#fff;color:var(--blue-d);border-radius:99px;padding:7px 12px;font-size:13px;cursor:pointer}
.chat__quick button:hover{background:var(--blue);color:#fff}
.chat form{width:100%;display:flex;gap:8px;margin-top:4px}
.chat input{flex:1;border:1.5px solid var(--line);border-radius:10px;padding:10px;font-size:14px}
.chat form button{border:0;background:var(--blue);color:#fff;border-radius:10px;padding:0 16px;font-weight:700;cursor:pointer}

.modal{position:fixed;inset:0;background:rgba(20,40,55,.55);z-index:80;display:grid;place-items:center;padding:16px}
.modal__box{width:min(480px,100%);max-height:90vh;overflow-y:auto;position:relative}
.modal__close{position:absolute;top:12px;right:12px;background:var(--bg);border:0;width:34px;height:34px;border-radius:50%;font-size:20px;cursor:pointer;color:var(--ink)}
.quiz__progress{height:6px;background:var(--line);border-radius:99px;overflow:hidden;margin-bottom:20px}
.quiz__progress i{display:block;height:100%;background:var(--blue);transition:.3s}
.quiz__step h3{margin-bottom:16px;color:var(--blue-d)}
.quiz__opts{display:grid;gap:10px}
.quiz__opt{border:1.5px solid var(--line);border-radius:12px;padding:14px 16px;background:#fbfdfe;text-align:left;font-size:15px;cursor:pointer;transition:.15s}
.quiz__opt:hover{border-color:var(--blue);background:#eef8fc}
.quiz__opt.is-active{border-color:var(--blue);background:var(--blue);color:#fff}
.thanks{text-align:center;padding:20px 0}
.thanks__ico{width:72px;height:72px;border-radius:50%;background:var(--green);color:#fff;display:grid;place-items:center;font-size:36px;margin:0 auto 18px}
.modal input,.modal textarea{width:100%;border:1.5px solid var(--line);border-radius:10px;padding:13px 14px;font-size:15px;margin-bottom:12px;font-family:inherit}

@media (max-width:900px){
  .hero__in,.contacts{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .guarantees,.facts__grid{grid-template-columns:repeat(2,1fr)}
  .works{grid-template-columns:repeat(3,1fr)}
  .reviews{grid-template-columns:1fr}
  .reviews img{max-width:420px;margin-inline:auto}
  .header__contacts{display:none}
}
@media (max-width:560px){
  .works{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .section{padding:44px 0}
}