:root{
  --ink:#0f172a; --ink2:#334155; --ink3:#64748b; --ink4:#94a3b8;
  --line:#e2e8f0; --bg:#ffffff; --bg2:#f8fafc; --bg3:#f1f5f9;
  --brand:#4f46e5; --brand2:#06b6d4; --brand-dark:#3730a3;
  --ok:#059669; --warn:#d97706; --red:#dc2626;
  --r:12px; --r-lg:18px;
  --sh:0 1px 2px rgba(15,23,42,.06),0 4px 14px rgba(15,23,42,.06);
  --sh-lg:0 8px 30px rgba(15,23,42,.12);
  --max:1240px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:10px;font-weight:600;font-size:14px;
  border:1px solid transparent;cursor:pointer;transition:.16s;background:var(--brand);color:#fff}
.btn:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn-o{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-o:hover{background:var(--bg2);border-color:var(--ink4)}
.btn-g{background:linear-gradient(135deg,var(--brand),var(--brand2))}
.btn-sm{padding:7px 13px;font-size:13px;border-radius:8px}
.btn-blk{width:100%;justify-content:center}
.tag{display:inline-block;padding:3px 9px;border-radius:6px;font-size:11px;font-weight:700;letter-spacing:.03em;text-transform:uppercase}
.t-hot{background:#fef3c7;color:#92400e}
.t-new{background:#dbeafe;color:#1e40af}
.t-moq{background:var(--bg3);color:var(--ink2)}

/* header */
.hdr{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.hdr-in{display:flex;align-items:center;gap:28px;height:64px}
.logo{font-size:21px;font-weight:800;letter-spacing:-.03em;display:flex;align-items:center;gap:9px}
.logo span{background:linear-gradient(135deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.logo-dot{width:9px;height:9px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2))}
.nav{display:flex;gap:22px;font-size:14px;font-weight:500;color:var(--ink2);margin-left:auto}
.nav a:hover{color:var(--brand)}
.nav a.on{color:var(--brand);font-weight:700}
.hdr-r{display:flex;align-items:center;gap:12px;margin-left:18px}
.cart-btn{position:relative;padding:8px 14px;border:1px solid var(--line);border-radius:9px;font-size:13px;font-weight:600;cursor:pointer;background:#fff}
.cart-btn:hover{border-color:var(--brand);color:var(--brand)}
.cart-n{position:absolute;top:-6px;right:-6px;min-width:19px;height:19px;border-radius:10px;background:var(--red);color:#fff;
  font-size:11px;font-weight:700;display:none;align-items:center;justify-content:center;padding:0 5px}
.cart-n.on{display:flex}
.burger{display:none;font-size:22px;background:none;border:0;cursor:pointer;color:var(--ink)}

/* hero */
.hero{background:linear-gradient(135deg,#0f172a 0%,#1e1b4b 55%,#155e75 100%);color:#fff;padding:78px 0 68px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-140px;top:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(6,182,212,.35),transparent 68%)}
.hero-in{position:relative;z-index:2;max-width:720px}
.hero h1{font-size:46px;line-height:1.1;letter-spacing:-.035em;font-weight:800;margin-bottom:18px}
.hero h1 em{font-style:normal;background:linear-gradient(135deg,#67e8f9,#a5b4fc);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{font-size:17px;color:rgba(255,255,255,.78);margin-bottom:28px;max-width:600px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap}
.hero .btn-o{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.3)}
.hero .btn-o:hover{background:rgba(255,255,255,.18)}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:44px;position:relative;z-index:2}
.kpi{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:var(--r);padding:16px 18px}
.kpi b{display:block;font-size:26px;font-weight:800;letter-spacing:-.02em}
.kpi span{font-size:12.5px;color:rgba(255,255,255,.65)}

/* sections */
.sec{padding:64px 0}
.sec-h{max-width:660px;margin-bottom:34px}
.sec-h h2{font-size:32px;font-weight:800;letter-spacing:-.03em;margin-bottom:10px}
.sec-h p{color:var(--ink3);font-size:15.5px}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);margin-bottom:10px}

/* category grid */
.cats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cat{position:relative;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:#fff;transition:.18s;display:block}
.cat:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:var(--brand)}
.cat-img{height:150px;display:flex;align-items:center;justify-content:center;background:var(--bg2)}
.cat-img svg{width:88px;height:88px}
.cat-b{padding:16px 18px 18px}
.cat-b h3{font-size:15.5px;font-weight:700;margin-bottom:4px}
.cat-b em{display:block;font-style:normal;font-size:12.5px;color:var(--ink4);margin-bottom:8px}
.cat-b p{font-size:13px;color:var(--ink3);line-height:1.5}

/* product grid */
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.f{padding:7px 15px;border:1px solid var(--line);border-radius:20px;font-size:13px;font-weight:600;color:var(--ink2);cursor:pointer;background:#fff}
.f:hover{border-color:var(--brand);color:var(--brand)}
.f.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.pgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.p{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:#fff;display:flex;flex-direction:column;transition:.18s}
.p:hover{box-shadow:var(--sh-lg);border-color:var(--brand);transform:translateY(-3px)}
.p-img{position:relative;height:172px;background:var(--bg2);display:flex;align-items:center;justify-content:center}
.p-img svg{width:96px;height:96px}
.p-b{padding:14px 16px 16px;display:flex;flex-direction:column;flex:1}
.p-sku{font-size:11px;font-weight:700;color:var(--ink4);letter-spacing:.05em}
.p-n{font-size:14.5px;font-weight:700;line-height:1.35;margin:4px 0 8px;flex:1}
.p-n:hover{color:var(--brand)}
.p-meta{font-size:12px;color:var(--ink3);margin-bottom:10px}
.p-pri{display:flex;align-items:baseline;gap:8px;margin-bottom:12px}
.p-pri b{font-size:20px;font-weight:800;letter-spacing:-.02em}
.p-pri s{font-size:12.5px;color:var(--ink4)}
.p-pri span{font-size:12px;color:var(--ink3)}
.p-acts{display:flex;gap:8px}
.p-acts .btn{flex:1;justify-content:center}

/* product detail */
.pd{display:grid;grid-template-columns:1fr 1fr;gap:48px;padding:34px 0}
.pd-img{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--bg2);height:380px;display:flex;align-items:center;justify-content:center;position:relative}
.pd-img svg{width:210px;height:210px}
.pd h1{font-size:30px;font-weight:800;letter-spacing:-.03em;line-height:1.2;margin:8px 0 12px}
.tiers{width:100%;border-collapse:collapse;margin:16px 0 20px;font-size:14px}
.tiers th{text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink4);padding:0 0 8px;border-bottom:1px solid var(--line)}
.tiers td{padding:10px 0;border-bottom:1px solid var(--bg3)}
.tiers td:first-child{font-weight:600}
.tiers td:last-child{text-align:right;font-weight:700;font-size:15px}
.tiers tr.hl td{color:var(--brand)}
.spec{width:100%;border-collapse:collapse;font-size:14px;margin-bottom:22px}
.spec td{padding:9px 0;border-bottom:1px solid var(--bg3)}
.spec td:first-child{color:var(--ink3);width:130px}
.spec td:last-child{font-weight:600}
.qty{display:flex;align-items:center;gap:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;width:150px;margin-bottom:14px}
.qty button{width:42px;height:44px;border:0;background:#fff;font-size:18px;cursor:pointer;color:var(--ink2)}
.qty button:hover{background:var(--bg3)}
.qty input{flex:1;height:44px;border:0;text-align:center;font-size:15px;font-weight:700;border-left:1px solid var(--line);border-right:1px solid var(--line)}
.pd-note{background:var(--bg2);border-left:3px solid var(--brand);padding:12px 16px;border-radius:0 8px 8px 0;font-size:13.5px;color:var(--ink2);margin-top:18px}

/* tables */
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink4);padding:12px 14px;background:var(--bg2);border-bottom:1px solid var(--line)}
.tbl td{padding:13px 14px;border-bottom:1px solid var(--bg3);vertical-align:top}
.tbl tr:hover td{background:var(--bg2)}
.card{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:#fff}

/* shipping calc */
.calc{display:grid;grid-template-columns:340px 1fr;gap:32px;align-items:start}
.calc-in{border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;background:#fff}
.lbl{display:block;font-size:12.5px;font-weight:700;color:var(--ink2);margin-bottom:7px}
.inp{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;font-size:15px;font-weight:600;margin-bottom:16px;font-family:inherit}
.inp:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(79,70,229,.12)}

/* payment grid */
.pays{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pay{border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;background:#fff;position:relative}
.pay.rec{border-color:var(--brand);box-shadow:0 0 0 3px rgba(79,70,229,.08)}
.pay h3{font-size:17px;font-weight:800;margin-bottom:4px}
.pay .role{font-size:12px;font-weight:700;color:var(--brand);margin-bottom:12px}
.pay p{font-size:13.5px;color:var(--ink3);margin-bottom:14px}
.pay dl{font-size:13px;display:grid;grid-template-columns:78px 1fr;gap:6px 10px;border-top:1px solid var(--bg3);padding-top:12px}
.pay dt{color:var(--ink4)}
.pay dd{font-weight:600}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:s}
.step{position:relative}
.step-n{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;margin-bottom:14px}
.step h4{font-size:15.5px;font-weight:700;margin-bottom:6px}
.step p{font-size:13.5px;color:var(--ink3)}

/* faq */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{padding:18px 0;font-weight:700;font-size:15.5px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";font-size:20px;color:var(--ink4);font-weight:400}
.faq details[open] summary:after{content:"−"}
.faq details p{padding:0 0 18px;color:var(--ink3);font-size:14.5px;max-width:760px}

/* cta band */
.cta{background:linear-gradient(135deg,#1e1b4b,#0f172a);color:#fff;padding:56px 0;text-align:center}
.cta h2{font-size:31px;font-weight:800;letter-spacing:-.03em;margin-bottom:10px}
.cta p{color:rgba(255,255,255,.7);margin-bottom:24px}

/* footer */
.ftr{background:#0f172a;color:#cbd5e1;padding:52px 0 26px;font-size:14px}
.ftr-g{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;margin-bottom:34px}
.ftr h5{color:#fff;font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;margin-bottom:14px}
.ftr ul{list-style:none}
.ftr li{margin-bottom:9px}
.ftr li a{color:#94a3b8}
.ftr li a:hover{color:#fff}
.ftr-b{border-top:1px solid #1e293b;padding-top:22px;color:#64748b;font-size:13px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}

/* breadcrumb */
.bc{font-size:13px;color:var(--ink4);padding:18px 0 0}
.bc a:hover{color:var(--brand)}

/* cart drawer */
.mask{position:fixed;inset:0;background:rgba(15,23,42,.5);z-index:100;display:none}
.mask.on{display:block}
.drawer{position:fixed;right:0;top:0;bottom:0;width:440px;max-width:100vw;background:#fff;z-index:101;
  transform:translateX(100%);transition:.24s;display:flex;flex-direction:column;box-shadow:var(--sh-lg)}
.drawer.on{transform:none}
.dh{padding:20px 22px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}
.dh h3{font-size:18px;font-weight:800}
.x{background:none;border:0;font-size:26px;cursor:pointer;color:var(--ink4);line-height:1}
.db{flex:1;overflow-y:auto;padding:18px 22px}
.di{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--bg3)}
.di-i{width:52px;height:52px;border-radius:9px;background:var(--bg2);flex-shrink:0;display:flex;align-items:center;justify-content:center}
.di-i svg{width:32px;height:32px}
.di-b{flex:1;min-width:0}
.di-b b{display:block;font-size:13.5px;font-weight:700;line-height:1.35;margin-bottom:3px}
.di-b small{color:var(--ink4);font-size:12px}
.di-r{display:flex;align-items:center;gap:6px;margin-top:7px}
.di-r input{width:64px;padding:4px 7px;border:1px solid var(--line);border-radius:7px;font-size:13px;text-align:center;font-weight:700}
.di-x{background:none;border:0;color:var(--red);font-size:12px;cursor:pointer;font-weight:600}
.df{padding:20px 22px;border-top:1px solid var(--line);background:var(--bg2)}
.df-row{display:flex;justify-content:space-between;font-size:14px;margin-bottom:8px}
.df-row.big{font-size:17px;font-weight:800;margin-bottom:14px}
.fld{margin-bottom:13px}
.fld input,.fld textarea,.fld select{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:9px;font-size:14px;font-family:inherit;background:#fff}
.fld input:focus,.fld textarea:focus{outline:0;border-color:var(--brand)}
.fld label{display:block;font-size:12.5px;font-weight:700;margin-bottom:6px;color:var(--ink2)}
.empty{text-align:center;padding:60px 20px;color:var(--ink4)}
.ok-box{background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46;padding:14px 16px;border-radius:10px;font-size:14px;margin-bottom:14px}

/* responsive */
@media(max-width:1080px){
  .cats,.pgrid{grid-template-columns:repeat(3,1fr)}
  .pays{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .kpis{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:820px){
  .nav{display:none}
  .burger{display:block;margin-left:auto}
  .hero h1{font-size:34px}
  .cats,.pgrid{grid-template-columns:repeat(2,1fr)}
  .pd,.calc{grid-template-columns:1fr;gap:26px}
  .ftr-g{grid-template-columns:1fr 1fr}
  .sec{padding:44px 0}
  .sec-h h2{font-size:26px}
}
@media(max-width:520px){
  .cats,.pgrid,.pays{grid-template-columns:1fr}
  .kpis{grid-template-columns:1fr 1fr}
  .hero{padding:52px 0 44px}
}