/* Пластиковые окна — чистая светлая тема, синий + белый, «техно-аккуратный». */
:root{
  --bg:#eef4fa;--paper:#ffffff;--ink:#152232;--mut:#5f6f81;--line:#dce6f0;
  --blue:#2b7fd6;--blue-d:#1c63ad;--sky:#e6f1fb;--red:#e8483f;--ok:#22a06b;
  --radius:16px;--max:1180px;--ease:cubic-bezier(.2,.8,.25,1);
  --font:'Inter',-apple-system,Segoe UI,Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}img{max-width:100%;display:block}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.sec{padding:88px 0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:15px 28px;border-radius:12px;font-weight:600;font-size:16px;cursor:pointer;border:0;transition:.22s var(--ease);font-family:inherit}
.btn--blue{background:var(--blue);color:#fff;box-shadow:0 10px 24px rgba(43,127,214,.28)}
.btn--blue:hover{background:var(--blue-d);transform:translateY(-2px)}
.btn--red{background:var(--red);color:#fff;box-shadow:0 10px 24px rgba(232,72,63,.28)}
.btn--red:hover{filter:brightness(.94);transform:translateY(-2px)}
.btn--out{background:#fff;border:1.5px solid var(--line);color:var(--ink)}.btn--out:hover{border-color:var(--blue);color:var(--blue)}
.btn--wide{width:100%}
.arrow{transition:.2s}.btn:hover .arrow{transform:translateX(3px)}

.topline{background:var(--blue-d);color:#fff;font-size:13px;text-align:center;padding:9px 0}
.topline b{background:#fff;color:var(--blue-d);border-radius:6px;padding:2px 8px;font-weight:700;margin:0 4px}
.hdr{position:sticky;top:0;z-index:100;background:rgba(238,244,250,.92);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:.3s}
.hdr.scr{border-color:var(--line)}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px}
.logo{font-size:22px;font-weight:800}.logo b{color:var(--blue)}
.nav{display:flex;gap:24px}.nav a{color:var(--mut);font-weight:500;font-size:15px}.nav a:hover{color:var(--ink)}
.hdr .r{display:flex;align-items:center;gap:16px}.hdr .ph{font-weight:700;font-size:17px}
.burger{display:none;background:none;border:0;font-size:26px;cursor:pointer;color:var(--ink)}

.hero{padding:52px 0 0}
.hero .grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start}
.hero .badge{display:inline-flex;align-items:center;gap:8px;background:var(--sky);color:var(--blue-d);border-radius:100px;padding:7px 15px;font-weight:600;font-size:13px;margin-bottom:20px}
.hero h1{font-size:clamp(34px,5vw,54px);line-height:1.06;font-weight:800;margin:0 0 16px;letter-spacing:-.02em}
.hero .lead{font-size:19px;color:var(--mut);margin:0 0 24px;max-width:520px}
.hero .ticks{display:flex;flex-direction:column;gap:10px;margin-bottom:26px}
.hero .ticks div{display:flex;gap:10px;align-items:center;font-weight:500}
.hero .ticks .ic{width:24px;height:24px;border-radius:50%;background:var(--ok);color:#fff;display:grid;place-items:center;font-size:14px;flex:0 0 auto}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap}

/* window calc */
.wcalc{background:var(--paper);border-radius:22px;padding:28px;box-shadow:0 24px 50px rgba(21,34,50,.1);border:1px solid var(--line)}
.wcalc h3{margin:0 0 4px;font-size:22px}
.wcalc .sub{color:var(--mut);font-size:14px;margin:0 0 18px}
.wcalc .win{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:18px}
.wopt{border:2px solid var(--line);border-radius:12px;padding:12px 8px;text-align:center;cursor:pointer;transition:.15s}
.wopt:hover{border-color:var(--blue)}
.wopt.sel{border-color:var(--blue);background:var(--sky)}
.wopt .fig{height:52px;margin:0 auto 8px;display:grid;place-items:center}
.wopt .fig i{display:block;border:3px solid var(--blue);border-radius:2px;background:linear-gradient(160deg,#dcefff,#bcdcff)}
.wopt b{font-size:13px;display:block}
.crow{margin-bottom:16px}
.crow label{display:flex;justify-content:space-between;font-weight:600;font-size:14px;margin-bottom:7px}
.crow label b{color:var(--blue)}
.crow input[type=range]{width:100%;accent-color:var(--blue)}
.wcalc__foot{display:flex;justify-content:space-between;align-items:center;gap:14px;background:var(--sky);border-radius:14px;padding:16px 18px;margin-bottom:14px}
.wcalc__foot .lbl{font-size:13px;color:var(--mut)}
.wcalc__foot .price{font-size:30px;font-weight:800;color:var(--blue-d);line-height:1}
.wcalc__foot .old{text-decoration:line-through;color:var(--mut);font-size:15px}
.field{margin-bottom:12px}
.field input{width:100%;background:var(--bg);border:1.5px solid var(--line);border-radius:10px;padding:13px 15px;color:var(--ink);font:inherit}
.field input:focus{outline:none;border-color:var(--blue)}
.lp-consent{display:flex;gap:9px;align-items:flex-start;font-size:11px;color:var(--mut);margin:10px 0;cursor:pointer}
.lp-consent input{margin-top:2px;width:16px;height:16px;flex:0 0 auto}
.lp-consent a{color:var(--blue);text-decoration:underline}

/* sale band with timer */
.sale{background:linear-gradient(120deg,var(--red),#c9382f);color:#fff;border-radius:22px;padding:40px;display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center}
.sale h2{font-size:clamp(26px,3.6vw,38px);margin:0 0 8px;font-weight:800}
.sale p{margin:0;opacity:.92}
.timer{display:flex;gap:10px;justify-content:flex-end}
.timer .u{background:rgba(255,255,255,.16);border-radius:12px;padding:14px 6px;text-align:center;min-width:70px}
.timer .u b{font-size:30px;font-weight:800;display:block;line-height:1}
.timer .u span{font-size:11px;opacity:.8;text-transform:uppercase}

.head{text-align:center;max-width:640px;margin:0 auto 46px}
.head .k{color:var(--blue);font-weight:700;font-size:14px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:10px}
.head h2{font-size:clamp(28px,4.2vw,42px);font-weight:800;margin:0 0 12px;letter-spacing:-.02em;line-height:1.1}
.head p{color:var(--mut);font-size:18px;margin:0}

/* profile comparison table */
.ctable{background:var(--paper);border:1px solid var(--line);border-radius:18px;overflow:hidden}
.crowt{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;border-top:1px solid var(--line)}
.crowt:first-child{border-top:0}
.crowt>div{padding:16px 20px;border-left:1px solid var(--line);display:flex;align-items:center;justify-content:center;text-align:center}
.crowt>div:first-child{border-left:0;justify-content:flex-start;color:var(--mut);font-weight:500}
.crowt.h>div{background:var(--sky);font-weight:800;font-size:17px;color:var(--blue-d)}
.crowt.h>div .cham{display:block;font-size:12px;color:var(--mut);font-weight:600;margin-top:2px}
.crowt .best{background:#f4faff}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stp{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px;position:relative}
.stp .n{font-size:34px;font-weight:800;color:var(--sky);position:absolute;top:16px;right:20px}
.stp .ic{font-size:26px;margin-bottom:12px}
.stp h3{font-size:17px;margin:0 0 6px}.stp p{color:var(--mut);font-size:14px;margin:0}

.revs{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rev{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.rev .st{color:#f5a623;margin-bottom:10px}.rev p{margin:0 0 16px;font-size:15px}
.rev .who b{display:block}.rev .who span{color:var(--mut);font-size:13px}

.contact{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--paper)}
.cform{padding:40px}
.cform h3{font-size:23px;margin:0 0 6px}.cform .sub{color:var(--mut);margin:0 0 18px}
.cform .field label{display:block;font-size:14px;color:var(--mut);margin-bottom:6px;font-weight:600}
.cform textarea{width:100%;background:var(--bg);border:1.5px solid var(--line);border-radius:10px;padding:13px 15px;color:var(--ink);font:inherit;min-height:90px}
.cform .lp-consent{color:var(--mut)}
.cinfo{padding:40px;background:var(--blue-d);color:#fff}
.cinfo h3{font-size:21px;margin:0 0 20px}
.cinfo .line{display:flex;gap:13px;align-items:center;margin-bottom:15px}
.cinfo .line .ic{width:40px;height:40px;border-radius:10px;background:rgba(255,255,255,.14);display:grid;place-items:center;font-size:17px;flex:0 0 auto}
.cinfo .map{margin-top:18px;border-radius:12px;overflow:hidden;min-height:160px;background:rgba(255,255,255,.08)}
.cinfo .map iframe{width:100%;height:210px;border:0;display:block}
.cinfo .map .stub{display:grid;place-items:center;height:180px;color:rgba(255,255,255,.7);font-size:14px}

.lp-flash{position:fixed;top:18px;left:50%;transform:translateX(-50%);z-index:9998;max-width:520px;width:calc(100% - 36px);padding:15px 44px 15px 18px;border-radius:12px;font-weight:600;box-shadow:0 20px 50px rgba(0,0,0,.16)}
.lp-flash--ok{background:#e5f6ee;border:1px solid var(--ok);color:#146b46}
.lp-flash--err{background:#fdeceb;border:1px solid var(--red);color:#a5271f}
.lp-flash__close{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:none;border:0;color:inherit;font-size:22px;cursor:pointer}

.footer{padding:50px 0 28px;border-top:1px solid var(--line)}
.footer .top{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:24px}
.footer .cols{display:flex;gap:46px;flex-wrap:wrap}
.footer .col b{display:block;margin-bottom:12px;font-size:14px}
.footer .col a{display:block;color:var(--mut);font-size:14px;margin-bottom:8px}.footer .col a:hover{color:var(--ink)}
.footer .legal{border-top:1px solid var(--line);padding-top:18px;font-size:13px;color:var(--mut);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

.reveal{opacity:0;transform:translateY(24px);transition:.7s var(--ease)}.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}

@media(max-width:960px){
  .hero .grid,.sale,.contact{grid-template-columns:1fr}
  .timer{justify-content:flex-start}
  .steps{grid-template-columns:repeat(2,1fr)}.revs{grid-template-columns:repeat(2,1fr)}
  .nav{display:none}.burger{display:block}
}
@media(max-width:600px){
  .steps,.revs{grid-template-columns:1fr}
  .sec{padding:60px 0}.sale{padding:28px 22px}.cform,.cinfo{padding:28px 22px}
  .ctable{overflow-x:auto}.crowt{min-width:560px}
}

/* --- faq --- */
.faq2{max-width:760px;margin:0 auto}
.faq2 details{background:var(--paper);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden}
.faq2 summary{list-style:none;cursor:pointer;padding:18px 22px;font-weight:700;font-size:16px;display:flex;justify-content:space-between;gap:14px}
.faq2 summary::-webkit-details-marker{display:none}
.faq2 summary .ar{color:var(--blue);transition:transform .3s var(--ease)}
.faq2 details[open] summary .ar{transform:rotate(45deg)}
.faq2 .a{padding:0 22px 18px;color:var(--mut);font-size:14px}