:root{--bg:#f7f8fa;--text:#111827;--muted:#6b7280;--line:#e5e7eb;--brand:#111827;--accent:#e8b04a;--green:#137333;--white:#fff}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--white);color:var(--text);line-height:1.55}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,92%);margin:auto}.topbar{background:#111827;color:#fff;text-align:center;padding:8px 12px;font-size:13px}.header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}.logo{font-size:24px;font-weight:900;letter-spacing:1.5px}.logo span{font-size:11px;font-weight:600;display:block;letter-spacing:2.5px;color:var(--muted)}.navlinks{display:flex;gap:24px;font-size:14px}.cart-link{display:flex;align-items:center;gap:8px;font-weight:700}.cart-count{width:24px;height:24px;border-radius:50%;background:#111827;color:#fff;display:grid;place-items:center;font-size:12px}.hero{padding:50px 0}.product-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:60px;align-items:start}.gallery{display:grid;grid-template-columns:82px 1fr;gap:16px;position:sticky;top:110px}.thumbs{display:flex;flex-direction:column;gap:10px}.thumb{border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;padding:4px;overflow:hidden}.thumb.active{border:2px solid #111827}.thumb img{width:72px;height:72px;object-fit:contain}.main-image{border:1px solid var(--line);border-radius:16px;background:#fff;min-height:580px;display:grid;place-items:center;padding:26px}.main-image img{width:100%;height:530px;object-fit:contain}.eyebrow{font-size:12px;font-weight:800;letter-spacing:1.8px;color:var(--muted)}h1{font-size:42px;line-height:1.12;margin:12px 0 16px}.rating{font-size:14px;color:#b7791f;margin-bottom:14px}.price{font-size:36px;font-weight:900;margin:8px 0}.price small{font-size:14px;color:var(--muted);font-weight:500}.stock{color:var(--green);font-weight:800;margin:10px 0 20px}.desc{color:#4b5563}.feature-list{padding-left:18px;color:#374151}.feature-list li{margin:10px 0}.fit-box{background:#f8fafc;border:1px solid var(--line);border-radius:12px;padding:16px;margin:20px 0;font-size:14px}.qty-row{display:flex;gap:12px;margin-top:24px}.qty{width:88px;height:52px;border:1px solid #d1d5db;border-radius:8px;padding:0 12px;font-size:16px}.btn{height:52px;border-radius:8px;border:0;padding:0 24px;font-size:15px;font-weight:800;cursor:pointer}.btn-primary{background:#111827;color:#fff;flex:1}.btn-secondary{background:#fff;color:#111827;border:1px solid #111827;width:100%;margin-top:10px}.trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:22px}.trust div{border:1px solid var(--line);border-radius:10px;padding:12px;text-align:center;font-size:12px;color:#4b5563}.section{padding:75px 0}.section.gray{background:var(--bg)}.section-title{text-align:center;max-width:760px;margin:0 auto 42px}.section-title h2{font-size:34px;margin:0 0 10px}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}.card h3{margin:8px 0}.specs{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden;border:1px solid var(--line)}.specs td{padding:15px 18px;border-bottom:1px solid var(--line)}.specs td:first-child{font-weight:700;width:35%;background:#fafafa}.footer{background:#111827;color:#fff;padding:50px 0 25px}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:30px}.footer a{display:block;color:#d1d5db;margin:8px 0;font-size:14px}.copyright{border-top:1px solid #374151;margin-top:35px;padding-top:20px;color:#9ca3af;font-size:13px}.page{padding:50px 0 80px}.page h1{font-size:34px}.panel{border:1px solid var(--line);border-radius:14px;padding:24px;background:#fff}.cart-row{display:grid;grid-template-columns:120px 1fr auto;gap:20px;align-items:center;border-bottom:1px solid var(--line);padding:18px 0}.cart-row img{width:110px;height:110px;object-fit:contain}.summary{margin-top:24px;max-width:430px;margin-left:auto}.summary-line{display:flex;justify-content:space-between;padding:10px 0}.total{font-size:22px;font-weight:900;border-top:1px solid var(--line);margin-top:8px;padding-top:16px}.checkout-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:30px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field input,.field select,.field textarea{padding:13px;border:1px solid #d1d5db;border-radius:8px;font-size:15px}.notice{background:#fff8e6;border:1px solid #f0d08a;border-radius:10px;padding:14px;font-size:13px;color:#6b4d16}.toast{position:fixed;right:22px;bottom:22px;background:#111827;color:#fff;padding:14px 18px;border-radius:10px;opacity:0;transform:translateY(10px);transition:.25s;z-index:50}.toast.show{opacity:1;transform:none}
@media(max-width:900px){.navlinks{display:none}.product-grid,.checkout-grid{grid-template-columns:1fr}.gallery{position:static}.cards{grid-template-columns:1fr 1fr}h1{font-size:34px}.main-image{min-height:430px}.main-image img{height:390px}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.gallery{grid-template-columns:1fr}.thumbs{order:2;flex-direction:row;overflow:auto}.thumb img{width:58px;height:58px}.main-image{min-height:360px}.main-image img{height:320px}.cards,.trust,.footer-grid,.form-grid{grid-template-columns:1fr}.cart-row{grid-template-columns:90px 1fr}.cart-row>div:last-child{grid-column:2}.hero{padding-top:28px}h1{font-size:30px}.price{font-size:31px}}