@import"https://fonts.googleapis.com/css2?family=Sarabun:wght@300;400;500;600;700;800&display=swap";:root{--primary:#e81d2b;--primary-hover:#cc002b;--secondary:#06c;--dark:#1f2937;--light:#f3f4f6;--white:#fff;--gray:#6b7280;--border:#e5e7eb;--shadow-sm:0 1px 2px 0 rgba(0,0,0,.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,.1);--radius:8px;--header-height:80px}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--white);color:var(--dark);font-family:Sarabun,Helvetica Neue,Helvetica,Arial,sans-serif;line-height:1.6}.container{margin:0 auto;max-width:1280px;padding:0 20px}.btn{border:none;border-radius:var(--radius);cursor:pointer;display:inline-flex;font-weight:600;padding:12px 24px;transition:all .3s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px)}.grid-3{display:grid;gap:2rem;grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}