:root{font-family:Noto Sans KR,system-ui,-apple-system,Segoe UI,sans-serif;line-height:1.5;font-weight:400;color:#e6e6e6;background-color:#0f1013;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background-color:#0f1013;color:#e6e6e6}body[data-theme=light]{background-color:#f4f5f7;color:#1b1c20}a{color:inherit;text-decoration:none}#root{min-height:100vh}.app{min-height:100vh;color:#e6e6e6}.topbar{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px 24px;background:linear-gradient(180deg,#1b1c20,#131419);border-bottom:1px solid #2b2d33}.topbar-left{display:flex;align-items:center}.brand{display:flex;flex-direction:column;gap:2px}.brand-title{font-size:20px;font-weight:700;letter-spacing:.2px}.brand-sub{font-size:12px;color:#9aa0aa}.tabs{display:flex;flex-wrap:wrap;gap:8px}.topbar-right{display:flex;align-items:center;gap:8px}.tab{padding:8px 14px;border-radius:999px;border:1px solid #2b2d33;background-color:#1b1c20;color:#d7d7d7;cursor:pointer;font-size:14px;transition:all .2s ease}.tab:hover{border-color:#3c414b;background-color:#22242a}.tab.is-active{border-color:#4d79ff;color:#fff;background-color:#4d79ff26}.theme-toggle{padding:8px 12px;border-radius:10px;border:1px solid #2b2d33;background-color:#1b1c20;color:#e6e6e6;font-size:13px;cursor:pointer;transition:all .2s ease}.theme-toggle:hover{border-color:#3c414b;background-color:#22242a}.lang-select{padding:8px 10px;border-radius:10px;border:1px solid #2b2d33;background-color:#1b1c20;color:#e6e6e6;font-size:13px}.layout{display:grid;grid-template-columns:180px minmax(0,1fr) 180px;gap:16px;padding:20px 24px 32px;max-width:1280px;margin:0 auto}.ad{background:#17181d;border:1px dashed #2f333b;color:#9aa0aa;min-height:520px;display:flex;align-items:center;justify-content:center;font-size:14px}.content{display:flex;flex-direction:column;gap:20px}.hero{padding:24px;border-radius:16px;background:linear-gradient(135deg,#1c1e25,#131419);border:1px solid #2b2d33}.hero h1{margin:0 0 8px;font-size:28px}.hero p{margin:0;color:#b4bac3}.panel{padding:20px;border-radius:16px;background-color:#15161b;border:1px solid #2b2d33}.panel-title{font-size:16px;margin-bottom:16px;color:#c7cbd4}.notebook-card{display:flex;flex-direction:column;gap:12px;color:#b9bec7}.notebook-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap}.notebook-title{display:flex;align-items:center;gap:12px}.notebook-icon{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:12px;background:#242734;font-size:18px}.notebook-name{font-size:20px;font-weight:700;color:#eef0f4}.notebook-meta{font-size:12px;color:#8c929b}.notebook-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.notebook-link{display:inline-flex;align-items:center;padding:8px 14px;border-radius:10px;border:1px solid #3d5afe;background-color:#3d5afe26;color:#e6ecff;font-size:14px;transition:all .2s ease}.notebook-link:hover{border-color:#5c7bff;background-color:#3d5afe40}.notebook-hint{font-size:12px;color:#8c929b}.notebook-summary{margin-top:4px;color:#b6bcc6;line-height:1.7}.notebook-prompt-list{display:grid;gap:10px}.prompt-chip{text-align:left;padding:10px 14px;border-radius:14px;border:1px solid #2b2d33;background-color:#1a1c22;color:#d2d6dd;font-size:14px;cursor:pointer;transition:all .2s ease}.prompt-chip:hover{border-color:#3c414b;background-color:#22252c}.notebook-input{display:flex;align-items:center;gap:10px;padding:10px;border-radius:16px;border:1px solid #2b2d33;background-color:#14161b}.notebook-input input{flex:1;border:none;background:transparent;color:#e6e6e6;font-size:14px;outline:none}.notebook-input .notebook-submit{text-decoration:none;padding:8px 14px;border-radius:12px;border:1px solid #3d5afe;background-color:#3d5afe2e;color:#e6ecff;font-size:13px;cursor:pointer;transition:all .2s ease}.notebook-input .notebook-submit:hover{background-color:#3d5afe4d}.panel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.panel-card{padding:16px;border-radius:12px;background-color:#1a1c22;border:1px solid #2a2d35}.panel-card h2{margin:0 0 8px;font-size:16px}.panel-card p{margin:0;color:#a6acb6;font-size:14px}.app.is-light{color:#1b1c20}.app.is-light .topbar{background:linear-gradient(180deg,#fff,#f4f5f7);border-bottom:1px solid #d9dde3}.app.is-light .brand-sub{color:#6a707a}.app.is-light .tab,.app.is-light .theme-toggle,.app.is-light .lang-select{background-color:#fff;border-color:#d9dde3;color:#1b1c20}.app.is-light .tab:hover,.app.is-light .theme-toggle:hover{background-color:#f0f2f6;border-color:#c7ccd4}.app.is-light .tab.is-active{border-color:#3d5afe;background-color:#3d5afe1f;color:#1b1c20}.app.is-light .ad{background:#f6f7f9;border-color:#d9dde3;color:#6a707a}.app.is-light .hero,.app.is-light .panel{background:#fff;border-color:#d9dde3}.app.is-light .hero p{color:#5a606a}.app.is-light .panel-title{color:#4a4f58}.app.is-light .panel-card{background-color:#f9fafc;border-color:#e1e6ee}.app.is-light .panel-card p{color:#5a606a}.app.is-light .notebook-card{color:#4f5560}.app.is-light .notebook-hint{color:#6a707a}.app.is-light .notebook-icon{background:#eef1f6}.app.is-light .notebook-name{color:#1b1c20}.app.is-light .notebook-link{border-color:#3d5afe;background-color:#3d5afe1f;color:#1b1c20}.app.is-light .notebook-link:hover{background-color:#3d5afe33}.app.is-light .notebook-summary{color:#5a606a}.app.is-light .prompt-chip{background-color:#f6f7fb;border-color:#e1e6ee;color:#1b1c20}.app.is-light .prompt-chip:hover{background-color:#eef2f8;border-color:#d5dbe5}.app.is-light .notebook-input{background-color:#fff;border-color:#e1e6ee}.app.is-light .notebook-input input,.app.is-light .notebook-input .notebook-submit{color:#1b1c20}.app.is-light .notebook-embed{border-color:#d9dde3;background-color:#fff}@media(max-width:1024px){.layout{grid-template-columns:1fr}.ad{min-height:160px}}@media(max-width:640px){.topbar{flex-direction:column;align-items:flex-start}.topbar-right{width:100%;justify-content:flex-start;flex-wrap:wrap}.panel-grid{grid-template-columns:1fr}}