:root{--primary: #0f766e;--primary-dark: #115e59;--primary-light: #5eead4;--secondary: #475569;--accent: #f97316;--accent-light: #fed7aa;--success: #059669;--warning: #d97706;--bg: #f0fdfa;--bg-white: #ffffff;--text: #134e4a;--text-light: #64748b;--border: #99f6e4;--gradient-start: #0f766e;--gradient-end: #0d9488}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Pretendard,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}#root{width:100%}.header{background:linear-gradient(135deg,var(--gradient-start) 0%,var(--gradient-end) 50%,#14b8a6 100%);color:#fff;padding:3.5rem 2rem;text-align:center;position:relative;overflow:hidden}.header:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");opacity:.3}.header-content{position:relative;z-index:1}.header h1{font-size:2.8rem;margin-bottom:.5rem;font-weight:700;letter-spacing:-.02em}.header .subtitle{font-size:1.3rem;opacity:.95;font-weight:400}.header .contact{margin-top:1rem;font-size:.95rem;opacity:.85}.ai-badge{display:inline-block;background:linear-gradient(135deg,var(--accent) 0%,#ea580c 100%);color:#fff;padding:.3rem .9rem;border-radius:20px;font-size:.85rem;margin-left:.75rem;font-weight:600;box-shadow:0 2px 8px #f973164d}.stats-bar{background:var(--bg-white);padding:1.75rem 1rem;display:flex;justify-content:center;gap:2.5rem;flex-wrap:wrap;box-shadow:0 4px 20px #0f766e14;border-bottom:3px solid var(--border)}.stat-item{text-align:center;padding:.5rem 1rem}.stat-value{font-size:2rem;font-weight:800;color:var(--primary)}.stat-label{font-size:.85rem;color:var(--text-light);margin-top:.25rem}.nav-tabs{background:var(--bg-white);padding:1rem;display:flex;justify-content:center;gap:.5rem;flex-wrap:wrap;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:0 2px 10px #00000008}.tab-btn{padding:.8rem 1.6rem;border:2px solid transparent;background:transparent;color:var(--text-light);cursor:pointer;border-radius:10px;font-size:.95rem;font-weight:500;transition:all .25s ease}.tab-btn:hover{background:var(--bg);color:var(--primary);border-color:var(--border)}.tab-btn.active{background:var(--primary);color:#fff;box-shadow:0 4px 12px #0f766e40}.main-content{max-width:1000px;margin:2rem auto;padding:0 1rem}.tab-content{display:none;background:var(--bg-white);border-radius:16px;padding:2.5rem;box-shadow:0 4px 25px #0f766e0f;border:1px solid var(--border)}.tab-content.active{display:block}.markdown-body h1{font-size:2rem;border-bottom:3px solid var(--primary);padding-bottom:.75rem;margin-bottom:1.5rem;color:var(--primary-dark)}.markdown-body h2{font-size:1.5rem;color:var(--primary);margin:2rem 0 1rem;padding-bottom:.4rem;border-bottom:2px solid var(--border)}.markdown-body h3{font-size:1.2rem;margin:1.5rem 0 .75rem;color:var(--primary-dark)}.markdown-body h4{font-size:1.1rem;color:var(--secondary);margin:1rem 0 .5rem}.markdown-body p{margin:.75rem 0}.markdown-body ul,.markdown-body ol{margin:.75rem 0;padding-left:1.5rem}.markdown-body li{margin:.4rem 0}.markdown-body table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.9rem;border-radius:10px;overflow:hidden}.markdown-body th{background:var(--primary);color:#fff;padding:.85rem;text-align:left;font-weight:600}.markdown-body td{padding:.85rem;border-bottom:1px solid var(--border)}.markdown-body tr:hover{background:var(--bg)}.markdown-body blockquote{border-left:4px solid var(--accent);padding:1rem 1.25rem;margin:1rem 0;background:linear-gradient(135deg,var(--accent-light) 0%,#fff7ed 100%);border-radius:0 10px 10px 0;font-style:normal;color:var(--secondary)}.markdown-body a{color:var(--primary);text-decoration:none;font-weight:500}.markdown-body a:hover{text-decoration:underline;color:var(--primary-dark)}.markdown-body hr{border:none;border-top:2px solid var(--border);margin:2rem 0}.markdown-body strong{color:var(--primary-dark)}.markdown-body code{background:var(--bg);padding:.2rem .4rem;border-radius:4px;font-size:.9em}.footer{text-align:center;padding:2.5rem;color:var(--text-light);font-size:.9rem;background:var(--bg-white);border-top:1px solid var(--border);margin-top:2rem}@media print{.nav-tabs,.stats-bar{display:none}.tab-content{display:block!important;page-break-after:always}}@media(max-width:768px){.header h1{font-size:2rem}.stats-bar{gap:1.5rem}.stat-value{font-size:1.5rem}.tab-btn{padding:.6rem 1rem;font-size:.85rem}.tab-content{padding:1.5rem}}