:root{--color-background-primary:#09090b;--color-background-surface:#111113;--color-background-card:#18181b;--color-text-primary:#fff;--color-text-secondary:#a1a1aa;--color-text-muted:#71717a;--color-accent:#ff6b2c;--color-success:#22c55e;--color-error:#ef4444;--color-border:#ffffff14;--font-heading:"DM Sans", sans-serif;--font-body:"DM Sans", sans-serif;--font-mono:"JetBrains Mono", monospace;--spacing-1:4px;--spacing-2:8px;--spacing-3:12px;--spacing-4:16px;--spacing-5:20px;--spacing-6:24px;--spacing-8:32px;--spacing-10:40px;--spacing-12:48px;--spacing-16:64px;--spacing-24:96px;--radius-input:12px;--radius-button:12px;--radius-card:16px;--radius-dialog:20px;--max-width:1200px}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px}body{font-family:var(--font-body);background-color:var(--color-background-primary);color:var(--color-text-primary);min-height:100vh;line-height:1.5}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);letter-spacing:-.02em;font-weight:600;line-height:1.2}h1{font-size:clamp(2.5rem,5vw,4rem);font-weight:700}h2{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:600}h3{font-size:clamp(1.25rem,2vw,1.75rem);font-weight:600}h4{font-size:clamp(1rem,1.5vw,1.25rem);font-weight:500}p{color:var(--color-text-secondary)}button{font-family:var(--font-body);cursor:pointer;background:0 0;border:none;transition:transform .15s,box-shadow .15s}button:hover:not(:disabled){transform:translateY(-1px)}button:active:not(:disabled){transform:translateY(0)}button:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.qr-input:focus{border-color:var(--color-accent);box-shadow:0 0 0 3px #ff6b2c1a}button[role=radio]:hover:not(:disabled){background-color:var(--color-background-card);color:var(--color-text-primary)}input,textarea,select{font-family:var(--font-body)}code,pre{font-family:var(--font-mono)}a{color:var(--color-accent);text-decoration:none;transition:opacity .15s}a:hover{opacity:.8;text-decoration:underline}:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}@media (width<=767px){.qr-generator-layout{gap:var(--spacing-5)!important;grid-template-columns:1fr!important}section{padding:var(--spacing-10) var(--spacing-4) var(--spacing-6)!important}.qr-generator-layout>div>div{padding:var(--spacing-4)!important}div[style*="width: 240px"]{width:200px!important;height:200px!important}header{padding:var(--spacing-3) var(--spacing-4)!important}}@media (width>=768px) and (width<=1024px){.qr-generator-layout{gap:var(--spacing-6)!important}div[style*="width: 240px"]{width:220px!important;height:220px!important}}