:root{--blue:#087cff;--blue2:#55b8ff;--ink:#0a0d12;--muted:#626b78;--soft:#f3f6fa;--line:#dfe5ec;--white:#fff;--shadow:0 18px 50px rgba(5,18,40,.12)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.55}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}.site-header{height:78px;display:flex;align-items:center;gap:28px;padding:10px clamp(18px,4vw,64px);position:sticky;top:0;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);z-index:20;border-bottom:1px solid rgba(223,229,236,.8)}.brand img{width:116px;height:58px;object-fit:contain}.nav{display:flex;gap:24px;margin-left:auto}.nav a{font-weight:700;font-size:.93rem}.nav a:hover{color:var(--blue)}.cart-button,.menu-toggle{border:0;background:var(--ink);color:white;border-radius:999px;padding:11px 16px;font-weight:800;cursor:pointer}.cart-button 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