:root{--brand: #b8551f;--brand-2: #c0392b;--brand-dark: #7a3410;--ink: #1c1410;--text: #2b2420;--muted: #7b6f68;--line: #ece4dd;--bg: #f6f2ee;--card: #fff;--sale: #d62d20;--ok: #15803d;--radius: 12px;--shadow: 0 1px 2px rgba(28, 20, 16, .06), 0 4px 14px rgba(28, 20, 16, .06);color-scheme:light}*{box-sizing:border-box}html,body{margin:0}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:15px;line-height:1.45}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}h1{font-size:22px;margin:6px 0 14px}h2{font-size:19px;margin:0}button,input,select,textarea{font:inherit}input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--text)}input:focus,select:focus,textarea:focus{outline:2px solid rgba(184,85,31,.25);border-color:var(--brand)}.container{width:100%;max-width:1220px;margin:0 auto;padding:0 16px}.container.narrow{max-width:980px}.muted{color:var(--muted)}.small{font-size:13px}.center{text-align:center}.pad{padding:40px 0}.error{color:var(--sale);font-weight:600}.ok{color:var(--ok);font-weight:600}.err{color:var(--sale);font-weight:600}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 18px;border:0;border-radius:10px;background:var(--brand);color:#fff;font-weight:600;cursor:pointer;text-align:center}.btn:hover{background:var(--brand-dark)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.block{display:flex;width:100%;margin-top:10px}.btn-ghost{background:#fff;color:var(--text);border:1px solid var(--line)}.btn-ghost:hover{background:#fbf6f2}.btn-light{background:#fff;color:var(--brand-dark)}.btn-light:hover{background:#fdf1e8}.btn-zalo{background:#0068ff}.btn-zalo:hover{background:#0052cc}.btn-buy{background:linear-gradient(135deg,var(--brand-2),var(--brand));flex-direction:column;gap:0;padding:10px 18px}.btn-buy 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a{display:inline}.footer-logo{background:#fff;display:inline-block;padding:8px 12px;border-radius:10px;margin-bottom:8px}.footer-logo img{height:40px;width:auto}.shop-footer .muted{color:#b5a79c}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);text-align:center;padding:14px;font-size:13px;color:#b5a79c}.float-contact{position:fixed;right:16px;bottom:20px;z-index:40;display:flex;flex-direction:column;gap:10px}.fc{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:800;box-shadow:0 6px 18px #00000040;font-size:14px}.fc.zalo{background:#0068ff}.fc.call{background:var(--sale);font-size:22px;animation:ring 2.5s infinite}@keyframes ring{0%,to{transform:scale(1)}8%{transform:scale(1.12) rotate(-10deg)}16%{transform:scale(1.12) rotate(10deg)}24%{transform:scale(1)}}@media(max-width:1100px){.product-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.listing 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