:root{--bg-main:#f8fafc;--bg-card:#fff;--bg-card-subtle:#f1f5f9;--bg-badge:#e6fffa;--border-color:#e2e8f0;--border-focus:#0d9488;--text-main:#0f172a;--text-secondary:#475569;--text-muted:#64748b;--text-on-teal:#fff;--teal-primary:#0d9488;--teal-hover:#0f766e;--teal-active:#115e59;--teal-light:#ccfbf1;--teal-text:#0f766e;--color-success:#059669;--color-warning:#d97706;--color-danger:#dc2626;--color-info:#0284c7;--font-sans:-apple-system,BlinkMacSystemFont,"Pretendard","Segoe UI",Roboto,Helvetica,Arial,sans-serif;--font-mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--shadow-sm:0 1px 2px 0 rgba(0,0,0,.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,.08),0 2px 4px -1px rgba(0,0,0,.04);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.08),0 4px 6px -2px rgba(0,0,0,.03);--radius-sm:6px;--radius-md:10px;--radius-lg:14px}*{box-sizing:border-box;padding:0;margin:0}body{background-color:var(--bg-main);color:var(--text-main);font-family:var(--font-sans);line-height:1.6;-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit;border:none;background:none}input,select,textarea{font-family:inherit;font-size:1rem}.app-container{min-height:100vh;display:flex;flex-direction:column}.site-header{background:#fff;border-bottom:1px solid var(--border-color);position:-webkit-sticky;position:sticky;top:0;z-index:50;box-shadow:var(--shadow-sm)}.header-content{max-width:1200px;margin:0 auto;padding:.85rem 1.25rem;justify-content:space-between}.header-content,.logo-area{display:flex;align-items:center}.logo-area{gap:.75rem}.brand-title{font-size:1.2rem;font-weight:700;color:var(--teal-hover);letter-spacing:-.02em;display:flex;align-items:center;gap:.5rem}.brand-badge{font-size:.7rem;font-weight:600;background-color:var(--teal-light);color:var(--teal-text);padding:.15rem .5rem;border-radius:var(--radius-sm)}.header-nav{display:flex;align-items:center;gap:1rem}.nav-link{font-size:.9rem;font-weight:500;color:var(--text-secondary);transition:color .15s}.nav-link:hover{color:var(--teal-primary)}.lang-btn{display:inline-flex;align-items:center;gap:.35rem;font-size:.85rem;font-weight:600;color:var(--teal-text);background:var(--bg-card-subtle);border:1px solid var(--border-color);padding:.35rem .75rem;border-radius:var(--radius-sm);transition:all .15s}.lang-btn:hover{border-color:var(--teal-primary);background:var(--teal-light)}.main-content{flex:1 1;max-width:1040px;width:100%;margin:0 auto;padding:2rem 1.25rem 4rem}.nacre-corner-accent{position:absolute;top:0;right:0;width:120px;height:120px;pointer-events:none;opacity:.08;background:radial-gradient(circle at top right,#0d9488,#065f46,transparent 70%)}.tool-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);transition:transform .15s,box-shadow .15s,border-color .15s;display:flex;flex-direction:column;position:relative;overflow:hidden}.tool-card:hover{border-color:var(--teal-primary);box-shadow:var(--shadow-md);transform:translateY(-2px)}.tool-card-disabled{opacity:.65;cursor:default}.tool-card-disabled:hover{transform:none;border-color:var(--border-color);box-shadow:var(--shadow-sm)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-size:.95rem;font-weight:600;padding:.7rem 1.25rem;border-radius:var(--radius-md);transition:background-color .15s,transform .1s}.btn-primary{background-color:var(--teal-primary);color:var(--text-on-teal)}.btn-primary:hover{background-color:var(--teal-hover)}.btn-primary:active{background-color:var(--teal-active);transform:scale(.99)}.btn-secondary{background-color:var(--bg-card-subtle);color:var(--text-main);border:1px solid var(--border-color)}.btn-secondary:hover{background-color:#e2e8f0}.btn-danger{background-color:#fee2e2;color:var(--color-danger);border:1px solid #fca5a5}.btn-danger:hover{background-color:#fecaca}.privacy-banner{display:flex;align-items:center;gap:.6rem;background-color:var(--teal-light);border:1px solid #99f6e4;color:var(--teal-text);padding:.75rem 1rem;border-radius:var(--radius-md);font-size:.88rem;margin-bottom:1.5rem}.site-footer{background:#fff;border-top:1px solid var(--border-color);padding:2.5rem 1.25rem;color:var(--text-muted);font-size:.85rem}.footer-content{max-width:1200px;margin:0 auto;display:flex;flex-direction:column;gap:1.25rem}.footer-top{align-items:flex-start;gap:1.5rem}.footer-bottom,.footer-top{display:flex;justify-content:space-between;flex-wrap:wrap}.footer-bottom{padding-top:1rem;border-top:1px solid #f1f5f9;align-items:center;gap:.75rem}@media (max-width:768px){.header-content{padding:.75rem 1rem}.main-content{padding:1.25rem 1rem 3rem}.footer-top{flex-direction:column}.nacre-accent-wrapper{width:64px!important;height:64px!important;right:.6rem!important;top:4.5rem!important;opacity:.22!important}.nacre-accent-wrapper[data-tool=true]{opacity:.1!important;top:4.35rem!important}}