/* СИНК — IT-сервис в Раменском. Чистый тёмный дизайн, без внешних шрифтов (системный стек — работает в РФ мгновенно) */
:root{
  --bg:#08111F;
  --bg2:#0D1626;
  --panel:#0F1D31;
  --panel2:#14233B;
  --line:rgba(53,214,232,.22);
  --cyan:#35D6E8;
  --cyan-d:#22C4DB;
  --mut:#9FB3C8;
  --white:#F2F7FB;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--white);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;line-height:1.55;overflow-x:hidden}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
img{max-width:100%;display:block}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.2;font-weight:800;letter-spacing:-.01em}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:50;background:rgba(10,17,32,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hd{display:flex;align-items:center;justify-content:space-between;height:68px;gap:18px}
.logo{display:flex;align-items:center;gap:10px;color:#fff}
.logo:hover{text-decoration:none}
.logo b{font-size:24px;letter-spacing:3px}
.logo svg{width:26px;height:26px;flex:0 0 auto}
.logo small{display:block;font-size:10.5px;color:var(--mut);font-weight:400;letter-spacing:.4px;max-width:170px;line-height:1.3}
nav ul{display:flex;gap:24px;list-style:none}
nav a{color:var(--white);font-size:15px;opacity:.85;transition:.15s}
nav a:hover{opacity:1;color:var(--cyan);text-decoration:none}
nav a.act{color:var(--cyan);opacity:1}
.hd-cta{display:flex;align-items:center;gap:10px}
.burger{display:none;background:none;border:0;cursor:pointer;padding:6px}
.burger span{display:block;width:26px;height:3px;background:var(--cyan);margin:5px 0;border-radius:2px}

/* ---------- buttons ---------- */
.btn{display:inline-block;background:linear-gradient(180deg,#5AE6F5,var(--cyan-d));color:#05202B;font-weight:700;border-radius:10px;padding:13px 28px;border:0;cursor:pointer;font-size:15.5px;transition:.15s}
.btn:hover{filter:brightness(1.08);text-decoration:none;transform:translateY(-1px)}
.btn.ghost{background:none;border:1.5px solid var(--cyan);color:var(--cyan)}
.btn.ghost:hover{background:rgba(53,214,232,.1)}
.btn.sm{padding:9px 18px;font-size:14px;border-radius:8px}

/* ---------- hero ---------- */
.hero{padding:92px 0 78px;position:relative;background:
 radial-gradient(1000px 480px at 85% -20%,#123049 0%,transparent 60%),
 var(--bg)}
.hero-g{display:grid;grid-template-columns:1.05fr .85fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(38px,5.4vw,64px);max-width:650px;letter-spacing:-.04em}
.hero .sub{color:var(--cyan);font-size:clamp(17px,2.2vw,22px);margin:14px 0 10px;font-weight:600}
.hero .lead{color:var(--mut);font-size:16.5px;margin-bottom:28px;max-width:520px}
.hero .btns{display:flex;gap:12px;flex-wrap:wrap}
.hero-img{border-radius:18px;border:1px solid var(--line);overflow:hidden;background:var(--panel)}
.hero-img img{width:100%;height:100%;object-fit:cover}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}
.badge{border:1px solid var(--line);background:rgba(53,214,232,.06);border-radius:20px;padding:8px 16px;font-size:13.5px;color:var(--cyan);font-weight:600}

/* ---------- sections ---------- */
section{padding:84px 0}
section.alt{background:var(--bg2);border-top:1px solid rgba(53,214,232,.1);border-bottom:1px solid rgba(53,214,232,.1)}
h2{font-size:clamp(26px,3.2vw,36px);margin-bottom:10px}
.sec-sub{color:var(--mut);margin-bottom:36px;max-width:640px}
.page-hero{padding:64px 0 40px}
.page-hero h1{font-size:clamp(30px,4vw,44px);margin-bottom:10px}
.page-hero p{color:var(--mut);max-width:640px}

/* ---------- grids / cards ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.card{border:1px solid var(--line);border-radius:18px;padding:26px 22px;background:var(--panel);transition:.18s}
.card:hover{transform:translateY(-3px);border-color:rgba(53,214,232,.5);background:var(--panel2)}
.card .ic{width:40px;height:40px;border-radius:10px;background:rgba(53,214,232,.1);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.card .ic svg{width:22px;height:22px}
.card h3{font-size:16.5px;margin-bottom:6px}
.card p{font-size:13.8px;color:var(--mut)}
.card ul{list-style:none;margin-top:10px}
.card ul li{font-size:13.5px;color:var(--mut);padding:3px 0 3px 18px;position:relative}
.card ul li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--cyan)}

/* ---------- about ---------- */
.about-g{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:start}
.about p{color:#C6D4E2;margin-bottom:14px;font-size:15.5px}
.why{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.why div{border:1px solid var(--line);border-radius:12px;padding:16px;background:var(--panel);font-size:14px}
.why b{color:var(--cyan);display:block;margin-bottom:4px;font-size:15px}
.why span{color:var(--mut)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:step}
.step{border:1px solid var(--line);border-radius:14px;padding:22px 20px;background:var(--panel);position:relative}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;top:18px;right:18px;font-size:26px;font-weight:800;color:rgba(53,214,232,.35)}
.step h3{font-size:16px;margin-bottom:6px;color:var(--white)}
.step p{font-size:13.5px;color:var(--mut)}

/* ---------- products ---------- */
.prod{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--panel);display:flex;flex-direction:column;transition:.18s}
.prod:hover{transform:translateY(-3px);border-color:rgba(53,214,232,.5)}
.prod .ph{aspect-ratio:1/1;background:#0B1830;display:flex;align-items:center;justify-content:center;padding:18px}
.prod .ph img{width:100%;height:100%;object-fit:contain}
.prod .pb{padding:16px 18px 18px;display:flex;flex-direction:column;gap:4px;flex:1}
.prod h3{font-size:15.5px}
.prod p{font-size:13px;color:var(--mut);flex:1}
.prod .pr{margin-top:10px;font-weight:800;color:var(--cyan);font-size:15px}
.prod .pr.mut{color:var(--mut);font-weight:600;font-size:14px}
.note-box{margin-top:28px;border:1px dashed rgba(53,214,232,.45);border-radius:12px;padding:16px 20px;color:var(--mut);font-size:14px;background:rgba(53,214,232,.04)}
.note-box b{color:var(--cyan)}

/* ---------- price ---------- */
.price-g{display:grid;grid-template-columns:1fr 1fr;gap:30px 44px}
.p-sec h3{color:var(--cyan);font-size:17.5px;border-bottom:1px solid rgba(53,214,232,.3);padding-bottom:8px;margin-bottom:12px}
.p-row{display:flex;align-items:baseline;gap:8px;padding:6px 0;font-size:14.5px}
.p-row .dots{flex:1;border-bottom:2px dotted rgba(159,179,200,.3);transform:translateY(-3px)}
.p-row .price{font-weight:800;color:var(--cyan);white-space:nowrap}
.p-note{font-size:12px;color:var(--mut);margin-top:8px}
.price-cta{margin-top:40px;text-align:center}

/* ---------- contacts ---------- */
.c-g{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.c-item{display:flex;gap:14px;align-items:flex-start;margin-bottom:22px}
.c-item .ic{width:42px;height:42px;flex:0 0 auto;border-radius:10px;background:rgba(53,214,232,.1);display:flex;align-items:center;justify-content:center}
.c-item .ic svg{width:22px;height:22px}
.c-item b{display:block;font-size:15.5px;margin-bottom:2px}
.c-item span{color:var(--mut);font-size:14px}
.c-card{border:1px solid var(--line);border-radius:16px;padding:28px;background:var(--panel)}
.c-card .btn{width:100%;text-align:center;margin-bottom:12px}
.c-card .btn:last-child{margin-bottom:0}
.c-card .mut{color:var(--mut);font-size:14px;display:block;margin:6px 0 18px}
.areas{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}
.areas span{border:1px solid var(--line);border-radius:16px;padding:5px 12px;font-size:12.5px;color:var(--mut)}

/* ---------- cta strip ---------- */
.cta{background:linear-gradient(135deg,#0E2A3D 0%,#0A1120 70%);border:1px solid var(--line);border-radius:18px;padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta h2{margin-bottom:6px}
.cta p{color:var(--mut);max-width:520px}

/* ---------- footer ---------- */
footer{border-top:1px solid rgba(53,214,232,.15);padding:32px 0;margin-top:0}
.f-g{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
.f-mut{color:var(--mut);font-size:13px}
.soc{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--cyan);color:#0A1120;font-weight:800;font-size:13px;margin-left:8px;transition:.15s}
.soc svg{width:16px;height:16px}
.soc:hover{filter:brightness(1.1);text-decoration:none}

/* ---------- responsive ---------- */
@media(max-width:1000px){
  .grid-4{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .hero-g,.about-g,.c-g{grid-template-columns:1fr}
  .hero-img{max-height:420px;order:-1}
  .price-g{grid-template-columns:1fr}
}
@media(max-width:820px){
  nav{position:fixed;top:68px;right:0;background:rgba(10,17,32,.98);width:260px;height:calc(100vh - 68px);transform:translateX(100%);transition:.25s;border-left:1px solid var(--line);z-index:49}
  nav.open{transform:none}
  nav ul{flex-direction:column;padding:28px;gap:18px}
  .burger{display:block}
  .hd-cta .btn{display:none}
  .logo small{display:none}
}
@media(max-width:560px){
  .grid-4,.grid-3,.grid-2,.steps{grid-template-columns:1fr}
  section{padding:54px 0}
  .cta{padding:32px 24px}
  .why{grid-template-columns:1fr}
}