:root{--primary: #0f172a;--primary-light: #1e293b;--accent: #3b82f6;--accent-hover: #2563eb;--bg-main: #f1f5f9;--surface: #ffffff;--text-main: #1e293b;--text-muted: #64748b;--text-inverse: #ffffff;--border: #e2e8f0;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius: 12px;--tool-secondary: #3498db;--tool-secondary-hover: #2980b9}*{margin:0;padding:0;box-sizing:border-box}body{background-color:var(--bg-main);color:var(--text-main);font-family:Pretendard Variable,Pretendard,-apple-system,BlinkMacSystemFont,system-ui,Roboto,Helvetica Neue,Segoe UI,Apple SD Gothic Neo,Noto Sans KR,Malgun Gothic,sans-serif;line-height:1.5;-webkit-font-smoothing:antialiased}.tool-page{max-width:1200px;margin:0 auto;padding:1.5rem 1rem 4rem}.tool-nav{margin-bottom:1.5rem}.back-btn-prominent{display:inline-flex;align-items:center;gap:4px;text-decoration:none;color:#fff;background-color:var(--tool-secondary);padding:8px 16px;border-radius:8px;font-weight:600;font-size:.9rem;transition:all .2s ease;box-shadow:0 2px 4px #3498db33}.back-btn-prominent:hover{background-color:var(--tool-secondary-hover);transform:translate(-2px);box-shadow:0 4px 8px #3498db4d}.page-header-tool-white{background:#fff;color:var(--primary);border-radius:14px;padding:24px;display:flex;align-items:center;gap:16px;margin-bottom:1.5rem;border:1px solid rgba(0,0,0,.05);box-shadow:var(--shadow-sm)}.page-header-tool-white .icon{font-size:2.5rem}.page-header-tool-white h1{font-size:1.4rem;font-weight:700;line-height:1.3;margin:0}.page-header-tool-white p{font-size:.9rem;color:var(--text-muted);margin-top:4px}.tool-card-container{background:#fff;border-radius:12px;box-shadow:var(--shadow-sm);padding:20px;margin-bottom:1.5rem;border:1px solid rgba(0,0,0,.05)}.tool-card-title{font-size:1rem;font-weight:700;color:var(--tool-secondary);margin-bottom:1.25rem;padding-bottom:10px;border-bottom:2px solid #f0f7ff}.btn-primary-action{width:100%;padding:16px;background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;border:none;border-radius:12px;font-weight:700;font-size:1.05rem;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px;transition:all .3s ease;box-shadow:0 4px 12px #3b82f633}.btn-primary-action:hover{transform:translateY(-2px);box-shadow:0 6px 20px #3b82f64d;filter:brightness(1.05)}.btn-secondary-action{width:100%;padding:16px;background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;border-radius:12px;font-weight:700;font-size:1.05rem;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px;transition:all .3s ease;box-shadow:0 4px 12px #10b98133}.btn-secondary-action:hover{transform:translateY(-2px);box-shadow:0 6px 20px #10b9814d;filter:brightness(1.05)}.btn-primary-action:active,.btn-secondary-action:active{transform:translateY(0)}.action-area-common{margin-top:2rem;display:flex;flex-direction:column;gap:12px}.dashboard-container{min-height:100vh;display:flex;flex-direction:column}.main-header{background-color:var(--surface);border-bottom:1px solid var(--border);padding:1rem;text-align:center}.brand-logo{font-size:1.75rem;font-weight:800;color:var(--primary);letter-spacing:-.025em}.brand-logo span{color:var(--accent)}.brand-tagline{color:var(--text-muted);font-size:.85rem;margin-top:.15rem;font-weight:500}.main-content{flex:1;max-width:1200px;width:100%;margin:0 auto;padding:.5rem 2rem 0;display:flex;flex-direction:column;justify-content:center}.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;margin:.25rem 0 1rem}.tool-card{background-color:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.75rem 1.5rem;text-decoration:none;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;transition:all .2s cubic-bezier(.4,0,.2,1);box-shadow:var(--shadow-sm);min-height:160px}.tool-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--accent)}.tool-icon-wrapper{width:64px;height:64px;background-color:#eff6ff;color:var(--accent);border-radius:16px;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .2s}.tool-info h3{font-size:1.25rem;font-weight:700;color:var(--primary);margin:0}.main-footer{background-color:var(--surface);border-top:1px solid var(--border);padding:1rem 1.5rem}.footer-content{max-width:1000px;margin:0 auto;text-align:center}.footer-links{margin-bottom:.5rem;display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem 1rem}.footer-links a{color:var(--text-muted);text-decoration:none;font-size:.75rem;font-weight:500;white-space:nowrap}.footer-info p{font-size:.65rem;color:var(--text-muted)}.disclaimer{margin-top:.15rem;font-size:.6rem!important;opacity:.7}@media (max-width: 768px){.dashboard-container{height:auto;overflow:auto}.main-content{padding:.25rem 1rem 0;justify-content:flex-start}.tool-grid{grid-template-columns:repeat(2,1fr);gap:.75rem;margin:0 0 1rem}.tool-card{min-height:100px}.page-header-tool-white{padding:16px;flex-direction:column;text-align:center}.page-header-tool-white h1{font-size:1.2rem}}