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22px 48px rgba(0, 0, 0, .5);color-scheme:dark}html.classic{--color-bg: #0F172A;--color-bg-alt: #1E293B;--color-surface: #1E293B;--color-border: #334155;--color-text: #E2E8F0;--color-text-muted: #94A3B8;--color-accent: #38BDF8;--color-accent-hover: #0EA5E9;--color-accent-soft: rgba(56, 189, 248, .1);--color-accent-ring: rgba(56, 189, 248, .18);--color-accent-contrast: #0F172A;--shadow: 0 4px 12px rgba(0, 0, 0, .25);--shadow-lg: 0 18px 48px rgba(0, 0, 0, .45);color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--color-bg);color:var(--color-text);scroll-behavior:smooth;transition:background-color .4s ease,color .4s ease}a{color:var(--color-accent);text-decoration:none;transition:color .2s ease}a:hover{color:var(--color-accent-hover)}h1,h2,h3{color:var(--color-text);margin:0 0 .5em;letter-spacing:-.01em}h2{font-size:2rem;margin-bottom:1.5rem;position:relative;padding-bottom:.5rem}h2:after{content:"";position:absolute;left:0;bottom:0;width:56px;height:3px;background:var(--color-accent);border-radius:2px}button{font-family:inherit;cursor:pointer}.container{max-width:var(--max-width);margin:0 auto;padding:0 1.5rem}section{padding:5rem 0;transition:background-color .4s ease}section:nth-of-type(2n){background:var(--color-bg-alt)}