*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Inter','Segoe UI',system-ui,-apple-system,sans-serif;
  background:#ffffff;
  color:#0f172a;
  font-size:15.5px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  font-feature-settings:'tnum' 1, 'ss01' 1;
}
a{color:#0f172a;text-decoration:none}
a:hover{color:#eab308}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{font-family:'Inter',sans-serif;color:#0f172a;line-height:1.15;font-weight:900;letter-spacing:-0.02em}
h1{font-size:clamp(32px,4.2vw,52px)}
h2{font-size:clamp(26px,3vw,38px)}
h3{font-size:20px;font-weight:800}
strong,b{font-weight:700}
.tabnum{font-variant-numeric:tabular-nums}

.sti-container{max-width:1320px;margin:0 auto;padding:0 24px}

/* TOPBAR */
.sti-top{background:#0f172a;color:#94a3b8;font-size:12.5px;letter-spacing:0.02em}
.sti-top-in{max-width:1320px;margin:0 auto;padding:8px 24px;display:flex;justify-content:space-between;gap:20px;align-items:center}
.sti-top a{color:#facc15;font-weight:600}
.sti-top a:hover{color:#fff}
.sti-top b{color:#fff;font-weight:600}

/* HEADER */
.sti-header{background:#fff;border-bottom:1px solid #e2e8f0;position:sticky;top:0;z-index:50}
.sti-header-in{max-width:1320px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.sti-logo{display:flex;align-items:center;gap:14px;text-decoration:none}
.sti-logo-mark{width:48px;height:48px;background:#facc15;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#0f172a;font-weight:900;font-size:18px;flex-shrink:0;letter-spacing:-0.04em;position:relative;font-family:'Inter',sans-serif}
.sti-logo-mark::after{content:"";position:absolute;left:8px;bottom:8px;width:14px;height:2px;background:#0f172a}
.sti-logo-txt{display:flex;flex-direction:column;line-height:1.1}
.sti-logo-name{font-size:18px;font-weight:900;color:#0f172a;letter-spacing:-0.02em;font-family:'Inter',sans-serif}
.sti-logo-sub{font-size:11px;color:#64748b;margin-top:4px;letter-spacing:0.06em;text-transform:uppercase;font-weight:600}
.sti-header-right{display:flex;align-items:center;gap:18px}
.sti-search{position:relative;flex:1;max-width:420px}
.sti-search input{width:100%;padding:11px 16px 11px 42px;border:2px solid #e2e8f0;border-radius:8px;font-size:14px;font-family:inherit;background:#fff;color:#0f172a;transition:border .15s;font-weight:500}
.sti-search input:focus{outline:none;border-color:#facc15}
.sti-search::before{content:"";position:absolute;left:14px;top:50%;transform:translateY(-50%);width:18px;height:18px;border:2px solid #64748b;border-radius:50%}
.sti-search::after{content:"";position:absolute;left:28px;top:50%;width:8px;height:2px;background:#64748b;transform:translateY(2px) rotate(45deg)}
.sti-phone{text-align:right}
.sti-phone-num{font-size:18px;font-weight:900;color:#0f172a;display:block;line-height:1;letter-spacing:-0.01em}
.sti-phone-sub{font-size:10.5px;color:#64748b;margin-top:4px;display:block;letter-spacing:0.06em;text-transform:uppercase;font-weight:600}
.sti-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:8px;font-weight:800;font-size:13.5px;line-height:1;border:none;cursor:pointer;transition:all .15s;text-decoration:none;letter-spacing:0.02em;text-transform:uppercase;font-family:inherit}
.sti-btn-prim{background:#facc15;color:#0f172a}
.sti-btn-prim:hover{background:#eab308;color:#0f172a}
.sti-btn-ghost{background:#fff;color:#0f172a;border:2px solid #e2e8f0}
.sti-btn-ghost:hover{border-color:#facc15;color:#0f172a}
.sti-btn-dark{background:#0f172a;color:#facc15}
.sti-btn-dark:hover{background:#1e293b;color:#facc15}

/* NAV */
.sti-nav{background:#0f172a;color:#fff}
.sti-nav-in{max-width:1320px;margin:0 auto;padding:0 24px;display:flex;flex-wrap:wrap;gap:0}
.sti-nav a{padding:14px 18px;font-size:13.5px;color:#cbd5e1;font-weight:700;border-bottom:3px solid transparent;transition:all .15s;letter-spacing:0.04em;text-transform:uppercase}
.sti-nav a:hover{color:#facc15;border-bottom-color:#facc15}
.sti-nav a.active{color:#facc15;border-bottom-color:#facc15;background:#1e293b}

/* HERO */
.sti-hero{padding:0;background:#0f172a;color:#fff;position:relative;overflow:hidden}
.sti-hero::before{content:"";position:absolute;top:0;right:0;width:50%;height:100%;background:repeating-linear-gradient(135deg,rgba(250,204,21,.04) 0,rgba(250,204,21,.04) 2px,transparent 2px,transparent 24px)}
.sti-hero::after{content:"";position:absolute;top:0;left:0;width:6px;height:100%;background:#facc15}
.sti-hero-in{position:relative;z-index:1;max-width:1320px;margin:0 auto;padding:84px 24px;display:grid;grid-template-columns:1.2fr 1fr;gap:54px;align-items:center}
.sti-hero-tag{display:inline-flex;align-items:center;gap:10px;background:#facc15;color:#0f172a;font-size:11px;font-weight:800;letter-spacing:0.12em;padding:7px 12px;border-radius:4px;text-transform:uppercase;margin-bottom:24px}
.sti-hero h1{color:#fff;margin-bottom:22px;font-weight:900;line-height:1.05}
.sti-hero h1 em{font-style:normal;color:#facc15}
.sti-hero-sub{font-size:18px;color:#cbd5e1;margin-bottom:30px;max-width:560px;line-height:1.55;font-weight:400}
.sti-hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:36px}
.sti-hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding-top:30px;border-top:1px solid #334155}
.sti-stat-num{font-size:30px;font-weight:900;color:#facc15;line-height:1;letter-spacing:-0.02em}
.sti-stat-lbl{font-size:12px;color:#94a3b8;margin-top:6px;letter-spacing:0.04em;text-transform:uppercase;font-weight:600}
.sti-hero-img{position:relative;background:#fff;border-radius:12px;padding:24px;aspect-ratio:1/1}
.sti-hero-img img{width:100%;height:100%;object-fit:contain}
.sti-hero-img-corner{position:absolute;top:-8px;left:-8px;width:64px;height:64px;background:#facc15;clip-path:polygon(0 0,100% 0,0 100%);display:flex;align-items:flex-start;justify-content:flex-start;padding:6px 0 0 6px;font-size:11px;font-weight:900;color:#0f172a;letter-spacing:0.05em}

/* BREADCRUMB */
.sti-bc{padding:14px 0;font-size:13px;color:#64748b;background:#f8fafc;border-bottom:1px solid #e2e8f0}
.sti-bc a{color:#0f172a;font-weight:600}
.sti-bc a:hover{color:#eab308}
.sti-bc span{margin:0 8px;color:#cbd5e1}

/* SECTIONS */
section{padding:72px 0}
.sti-sec-head{margin-bottom:42px;max-width:780px;display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:18px}
.sti-sec-head.full{max-width:100%}
.sti-sec-head-l{flex:1;min-width:300px}
.sti-sec-eyebrow{display:inline-block;font-size:11px;color:#eab308;letter-spacing:0.16em;text-transform:uppercase;margin-bottom:10px;font-weight:800;background:#fef9c3;padding:5px 10px;border-radius:4px}
.sti-sec-head h2{margin-bottom:8px}
.sti-sec-head p{color:#64748b;font-size:16px;font-weight:400}

/* CATEGORY CARDS */
.sti-cats{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.sti-cat-card{background:#fff;border:2px solid #e2e8f0;border-radius:10px;padding:24px 22px;text-decoration:none;transition:all .2s;display:flex;flex-direction:column;gap:10px;position:relative}
.sti-cat-card:hover{border-color:#facc15;transform:translateY(-2px);box-shadow:0 14px 32px -16px rgba(15,23,42,.18)}
.sti-cat-img{width:100%;aspect-ratio:1/1;background:#f8fafc;border-radius:8px;overflow:hidden;margin-bottom:8px;display:flex;align-items:center;justify-content:center;padding:14px}
.sti-cat-img img{width:100%;height:100%;object-fit:contain;transition:transform .3s}
.sti-cat-card:hover .sti-cat-img img{transform:scale(1.06)}
.sti-cat-name{font-size:15.5px;font-weight:800;color:#0f172a;letter-spacing:-0.01em}
.sti-cat-meta{font-size:11.5px;color:#eab308;letter-spacing:0.06em;text-transform:uppercase;font-weight:800;margin-top:auto}
.sti-cat-meta::before{content:"→ ";color:#facc15;font-weight:900}

/* PRODUCT GRID */
.sti-prods{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.sti-prod{background:#fff;border:2px solid #e2e8f0;border-radius:10px;overflow:hidden;display:flex;flex-direction:column;transition:all .2s;text-decoration:none;color:inherit;position:relative}
.sti-prod:hover{border-color:#facc15;transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(15,23,42,.14)}
.sti-prod-img{aspect-ratio:1/1;background:#f8fafc;overflow:hidden;display:flex;align-items:center;justify-content:center;padding:18px;border-bottom:1px solid #e2e8f0}
.sti-prod-img img{width:100%;height:100%;object-fit:contain}
.sti-prod-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:6px;flex:1}
.sti-prod-sku{font-size:10.5px;color:#94a3b8;letter-spacing:0.08em;text-transform:uppercase;font-weight:700;font-variant-numeric:tabular-nums}
.sti-prod-name{font-size:14.5px;font-weight:800;color:#0f172a;line-height:1.3;margin-top:2px}
.sti-prod-spec{font-size:12.5px;color:#64748b;font-weight:500;margin-top:2px}
.sti-prod-foot{display:flex;justify-content:space-between;align-items:flex-end;margin-top:12px;padding-top:12px;border-top:1px solid #f1f5f9}
.sti-prod-price{font-size:20px;font-weight:900;color:#0f172a;line-height:1;letter-spacing:-0.02em;font-variant-numeric:tabular-nums}
.sti-prod-price small{font-size:10.5px;color:#64748b;font-weight:600;display:block;margin-top:3px;letter-spacing:0.04em;text-transform:uppercase}
.sti-prod-cta{font-size:11px;color:#0f172a;font-weight:800;background:#facc15;padding:7px 12px;border-radius:5px;letter-spacing:0.04em;text-transform:uppercase}
.sti-prod-badge{position:absolute;top:10px;left:10px;background:#0f172a;color:#facc15;font-size:10px;padding:4px 8px;border-radius:4px;font-weight:800;letter-spacing:0.06em;text-transform:uppercase;z-index:2}

/* BRANDS STRIP */
.sti-brands{background:#f8fafc;border-top:1px solid #e2e8f0;border-bottom:1px solid #e2e8f0;padding:42px 0}
.sti-brands-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:24px;align-items:center}
.sti-brand-tile{background:#fff;border:2px solid #e2e8f0;border-radius:10px;padding:22px;display:flex;align-items:center;justify-content:center;min-height:90px;font-weight:900;font-size:18px;color:#0f172a;letter-spacing:-0.02em;transition:all .2s;text-align:center}
.sti-brand-tile:hover{border-color:#facc15;color:#eab308}

/* FEATURES STRIP */
.sti-feats{background:#0f172a;color:#fff;padding:54px 0}
.sti-feats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:36px}
.sti-feat-row{display:flex;gap:16px;align-items:flex-start}
.sti-feat-ico{width:48px;height:48px;background:#facc15;color:#0f172a;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0;font-weight:900}
.sti-feat-row h4{color:#fff;font-size:15px;margin-bottom:6px;font-weight:800}
.sti-feat-row p{color:#cbd5e1;font-size:13.5px;line-height:1.55;font-weight:400}

/* TWO-COL */
.sti-twocol{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.sti-twocol h2{margin-bottom:18px}
.sti-twocol p{color:#475569;margin-bottom:14px;font-size:15.5px}
.sti-twocol ul{padding-left:0;list-style:none;margin-top:8px}
.sti-twocol ul li{padding:8px 0 8px 30px;position:relative;color:#334155;font-weight:500}
.sti-twocol ul li::before{content:"✓";position:absolute;left:0;top:8px;width:20px;height:20px;background:#facc15;color:#0f172a;border-radius:4px;text-align:center;font-size:12px;font-weight:900;line-height:20px}
.sti-twocol-img{border-radius:12px;overflow:hidden;background:#f8fafc;border:2px solid #e2e8f0;padding:22px}
.sti-twocol-img img{width:100%;height:auto;display:block}

/* CTA BAND */
.sti-cta{background:#facc15;color:#0f172a;padding:54px 0;position:relative;overflow:hidden}
.sti-cta::before{content:"";position:absolute;top:0;left:0;width:100%;height:6px;background:repeating-linear-gradient(45deg,#0f172a 0,#0f172a 12px,#facc15 12px,#facc15 24px)}
.sti-cta::after{content:"";position:absolute;bottom:0;left:0;width:100%;height:6px;background:repeating-linear-gradient(45deg,#0f172a 0,#0f172a 12px,#facc15 12px,#facc15 24px)}
.sti-cta-in{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.sti-cta h2{margin-bottom:8px;color:#0f172a}
.sti-cta p{color:#0f172a;font-size:16px;font-weight:600}

/* TARIFFS */
.sti-tariff{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.sti-tariff-card{background:#fff;border:2px solid #e2e8f0;border-radius:12px;padding:32px 26px;position:relative;transition:all .2s}
.sti-tariff-card:hover{border-color:#facc15;transform:translateY(-3px)}
.sti-tariff-card.featured{border-color:#facc15;background:#fffbeb}
.sti-tariff-badge{position:absolute;top:-13px;left:24px;background:#0f172a;color:#facc15;font-size:11px;font-weight:800;padding:5px 12px;border-radius:4px;text-transform:uppercase;letter-spacing:0.06em}
.sti-tariff-name{font-size:20px;font-weight:900;color:#0f172a;margin-bottom:6px;letter-spacing:-0.02em}
.sti-tariff-desc{font-size:13px;color:#64748b;margin-bottom:18px;font-weight:500}
.sti-tariff-price{font-size:30px;font-weight:900;color:#0f172a;line-height:1;margin-bottom:6px;letter-spacing:-0.02em;font-variant-numeric:tabular-nums}
.sti-tariff-price small{font-size:13px;color:#64748b;font-weight:600;font-variant-numeric:normal}
.sti-tariff-list{list-style:none;padding:20px 0 0;margin-top:18px;border-top:2px dashed #e2e8f0}
.sti-tariff-list li{padding:7px 0 7px 24px;position:relative;font-size:13.5px;color:#334155;font-weight:500}
.sti-tariff-list li::before{content:"✓";position:absolute;left:0;top:8px;color:#eab308;font-weight:900}

/* PROD DETAIL */
.sti-pd{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;padding:32px 0}
.sti-pd-img{border-radius:12px;overflow:hidden;background:#f8fafc;border:2px solid #e2e8f0;padding:32px;display:flex;align-items:center;justify-content:center;aspect-ratio:1/1}
.sti-pd-img img{width:100%;height:100%;object-fit:contain}
.sti-pd-sku{font-size:11.5px;color:#94a3b8;letter-spacing:0.1em;text-transform:uppercase;font-weight:700;font-variant-numeric:tabular-nums}
.sti-pd-price{font-size:46px;font-weight:900;color:#0f172a;line-height:1;margin:14px 0 6px;letter-spacing:-0.03em;font-variant-numeric:tabular-nums}
.sti-pd-price small{font-size:13px;color:#64748b;font-weight:600;font-variant-numeric:normal}
.sti-pd-stock{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#16a34a;font-weight:700;margin:10px 0 14px}
.sti-pd-stock::before{content:"";display:inline-block;width:9px;height:9px;background:#16a34a;border-radius:50%}
.sti-pd-specs{margin:18px 0;display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:2px solid #0f172a}
.sti-pd-specs dt{font-size:13px;color:#64748b;padding:12px 0;border-bottom:1px solid #e2e8f0;font-weight:600}
.sti-pd-specs dd{font-size:14px;color:#0f172a;padding:12px 0;border-bottom:1px solid #e2e8f0;text-align:right;font-weight:700;font-variant-numeric:tabular-nums}
.sti-pd-cta-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}

/* CONTACT */
.sti-contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.sti-contact-card{background:#fff;border:2px solid #e2e8f0;border-radius:12px;padding:30px}
.sti-contact-card h3{font-size:18px;margin-bottom:18px;font-weight:900}
.sti-contact-row{display:flex;gap:14px;padding:10px 0;align-items:flex-start}
.sti-contact-ico{width:38px;height:38px;background:#facc15;color:#0f172a;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;font-weight:900}
.sti-contact-row b{display:block;color:#0f172a;font-size:14px;margin-bottom:2px;font-weight:800}
.sti-contact-row span{font-size:13.5px;color:#64748b;font-weight:500}
.sti-input{padding:13px 16px;border:2px solid #e2e8f0;border-radius:8px;font-size:14.5px;font-family:inherit;background:#fff;color:#0f172a;transition:border .15s;font-weight:500}
.sti-input:focus{outline:none;border-color:#facc15}

/* PAGE HERO */
.sti-ph{background:#0f172a;color:#fff;padding:52px 0;position:relative;overflow:hidden}
.sti-ph::after{content:"";position:absolute;top:0;left:0;width:6px;height:100%;background:#facc15}
.sti-ph h1{color:#fff;margin-bottom:8px}
.sti-ph p{color:#cbd5e1;font-size:16px;max-width:760px;font-weight:400}

/* ARTICLE */
.sti-articles{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px}
.sti-article{background:#fff;border:2px solid #e2e8f0;border-radius:10px;overflow:hidden;transition:all .2s;display:block;text-decoration:none;color:inherit}
.sti-article:hover{transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(15,23,42,.14);border-color:#facc15}
.sti-article-img{aspect-ratio:16/10;background:#f8fafc;overflow:hidden;border-bottom:1px solid #e2e8f0}
.sti-article-img img{width:100%;height:100%;object-fit:cover}
.sti-article-body{padding:20px 22px 22px}
.sti-article-meta{font-size:10.5px;color:#eab308;letter-spacing:0.1em;text-transform:uppercase;margin-bottom:8px;font-weight:800}
.sti-article-name{font-size:16px;font-weight:800;color:#0f172a;line-height:1.3;margin-bottom:8px;letter-spacing:-0.01em}
.sti-article-excerpt{font-size:13.5px;color:#64748b;line-height:1.55}

/* FOOTER */
.sti-footer{background:#0f172a;color:#94a3b8;padding:60px 0 28px}
.sti-footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.sti-footer h4{color:#facc15;font-size:13px;font-weight:900;margin-bottom:14px;letter-spacing:0.08em;text-transform:uppercase}
.sti-footer p,.sti-footer li{font-size:13.5px;line-height:1.65;color:#94a3b8;font-weight:400}
.sti-footer ul{list-style:none}
.sti-footer ul li{padding:4px 0}
.sti-footer a{color:#94a3b8;transition:color .15s}
.sti-footer a:hover{color:#facc15}
.sti-footer-logo{font-weight:900;font-size:20px;color:#fff;margin-bottom:14px;display:flex;align-items:center;gap:12px;letter-spacing:-0.02em}
.sti-footer-logo-mark{width:38px;height:38px;background:#facc15;color:#0f172a;border-radius:7px;display:flex;align-items:center;justify-content:center;font-size:14px}
.sti-footer-bottom{border-top:1px solid #1e293b;padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;font-size:12px;color:#64748b}

/* RESPONSIVE */
@media(max-width:980px){
  .sti-hero-in,.sti-twocol,.sti-pd,.sti-contact-grid{grid-template-columns:1fr;gap:30px}
  .sti-hero-in{padding:50px 24px}
  .sti-footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .sti-top-in{flex-direction:column;gap:6px;text-align:center;padding:8px 16px;font-size:12px}
  .sti-header-in{flex-wrap:wrap;gap:14px;padding:14px 18px}
  .sti-search{order:3;max-width:100%;width:100%}
  .sti-nav-in{flex-wrap:wrap;overflow-x:auto;padding:0 12px}
  .sti-nav a{padding:12px 12px;font-size:12.5px}
  section{padding:42px 0}
  .sti-cta-in{flex-direction:column;text-align:center}
}
@media(max-width:560px){
  .sti-footer-grid{grid-template-columns:1fr}
  .sti-hero-stats{grid-template-columns:1fr 1fr;gap:18px}
  .sti-header-right{gap:10px;width:100%;justify-content:space-between}
  .sti-phone-num{font-size:15px}
  .sti-btn{padding:11px 16px;font-size:12.5px}
  .sti-pd-specs{grid-template-columns:1fr 1fr}
}