:root{--background:#fff;--foreground:#1a1a1a;--border-color:#e0e0e0;--text-muted:#666;--accent:#000;--kakao-yellow:#fee500;--grid-size:20px;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}body{background-color:var(--background);color:var(--foreground);font-family:var(--font-sans);margin:0;line-height:1.6}main{max-width:900px;margin:0 auto;padding:100px 40px}.kakao-connect-top{justify-content:center;margin-top:40px;display:flex}.kakao-btn{background-color:var(--kakao-yellow);color:#3c1e1e;border-radius:8px;align-items:center;gap:10px;padding:12px 24px;font-size:.95rem;font-weight:600;text-decoration:none;transition:transform .2s,box-shadow .2s;display:flex}.kakao-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000001a}.timeline{border-left:1px solid var(--border-color);margin:80px 0 100px;padding-left:30px;position:relative}.milestone{margin-bottom:80px;position:relative}.milestone:before{content:"";background:var(--background);border:1px solid var(--accent);border-radius:50%;width:10px;height:10px;position:absolute;top:8px;left:-35.5px}.milestone .year{color:var(--text-muted);letter-spacing:.1rem;margin-bottom:8px;font-size:.85rem;font-weight:600;display:block}.milestone h3{margin:0 0 12px;font-size:1.4rem;font-weight:700}.story-block{grid-template-columns:1fr 1fr;gap:40px;margin-top:20px;display:grid}.stack-visual{border:1px solid var(--border-color);background-image:linear-gradient(var(--border-color) 1px, transparent 1px), linear-gradient(90deg, var(--border-color) 1px, transparent 1px);background-size:var(--grid-size) var(--grid-size);background-position:-1px -1px;flex-wrap:wrap;place-content:center;gap:10px;min-height:150px;padding:20px;display:flex}.tag{background:var(--background);border:1px solid var(--accent);padding:4px 12px;font-family:monospace;font-size:.85rem}header{text-align:center;margin-bottom:80px}h1{margin-bottom:20px;font-size:3rem;font-weight:800}.intro-text{max-width:600px;color:var(--text-muted);margin:0 auto;font-size:1.25rem}@media (max-width:768px){.story-block{grid-template-columns:1fr}}