:root{--bg:#f5f7fb;--surface:#fff;--line:#dce4f0;--text:#1e2838;--subtle:#51617a;--primary:#4f46e5;--primary-dark:#4338ca;--primary-soft:#eef0ff;color:var(--text);background-color:var(--bg);text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;font-family:Pretendard,Noto Sans KR,system-ui,-apple-system,sans-serif}*{box-sizing:border-box}body{min-width:320px;margin:0}a{color:inherit;text-decoration:none}#root{min-height:100vh}.app-shell{flex-direction:column;gap:24px;max-width:960px;min-height:100vh;margin:0 auto;padding:24px 16px 32px;display:flex}.topbar{background:var(--surface);border:1px solid var(--line);border-radius:14px;justify-content:space-between;align-items:center;gap:16px;padding:14px 18px;display:flex}.brand{font-size:1.1rem;font-weight:700}.menu{color:var(--subtle);gap:14px;font-size:.95rem;display:flex}.menu a:hover{color:var(--primary)}.menu-highlight{color:var(--primary-dark);font-weight:700}.content{flex:1;justify-content:center;align-items:center;display:flex}.landing{flex-direction:column;gap:16px;width:100%;max-width:860px;display:flex}.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;flex-direction:column;gap:18px;width:100%;max-width:760px;padding:36px 30px;display:flex}.eyebrow{color:var(--primary);margin:0;font-size:.9rem;font-weight:600}h1{margin:0;font-size:2rem}h2{margin:0;font-size:1.12rem}.description{color:var(--subtle);margin:0;line-height:1.65}.actions{flex-wrap:wrap;gap:12px;display:flex}.button{border-radius:10px;padding:11px 16px;font-size:.92rem;font-weight:600}.button-primary{color:#fff;background:var(--primary)}.button-primary:hover{background:var(--primary-dark)}.button-secondary{background:var(--primary-soft);color:var(--primary-dark)}.hero-card{max-width:860px}.feature-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.feature-item{background:var(--surface);border:1px solid var(--line);border-radius:14px;flex-direction:column;gap:8px;padding:16px;display:flex}.feature-item p{color:var(--subtle);margin:0;font-size:.94rem;line-height:1.6}.steps{color:var(--text);margin:0;padding-left:18px;line-height:1.7}.notice{border:1px solid var(--line);background:#fbfcff;border-radius:12px;padding:14px}.notice p{color:var(--subtle);margin:6px 0}.footer{text-align:center;color:var(--subtle);font-size:.92rem}.footer a{color:var(--primary-dark)}@media (width<=768px){.topbar{flex-direction:column;align-items:flex-start}.menu{justify-content:space-between;width:100%}.card{padding:26px 20px}.feature-grid{grid-template-columns:1fr}h1{font-size:1.6rem}}