*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}:root{--primary-color:#2563eb;--primary-hover:#1d4ed8;--bg-color:#f8fafc;--card-bg:#ffffff;--text-primary:#1e293b;--text-secondary:#64748b;--border-color:#e2e8f0;--border-radius:12px;--shadow-sm:0 1px 2px rgba(0,0,0,0.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -2px rgba(0,0,0,0.1);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -4px rgba(0,0,0,0.1)}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;background-color:var(--bg-color);color:var(--text-primary);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}.header{position:sticky;top:0;z-index:100;display:flex;justify-content:space-between;align-items:center;padding:12px 24px;background-color:var(--card-bg);border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-sm)}.header-logo{text-decoration:none;display:flex;align-items:center}.header-logo:hover .logo-text{opacity:0.8}.logo-text{font-size:1.25rem;font-weight:700;letter-spacing:-0.025em;transition:opacity 0.2s ease}.header-actions{display:flex;align-items:center;gap:12px}.btn-donate{display:flex;align-items:center;gap:8px;padding:8px 16px;background-color:#ffdd00;color:#000000;text-decoration:none;font-size:0.875rem;font-weight:600;border-radius:12px;border:1px solid #e5c700;transition:all 0.2s ease;box-shadow:var(--shadow-sm)}.btn-donate:hover{background-color:#ffeb3b;transform:translateY(-1px);box-shadow:var(--shadow-md)}.coffee-icon{width:18px;height:18px}.lang-switch{display:flex;align-items:center;gap:6px;background:none;border:1px solid var(--border-color);border-radius:6px;padding:6px 12px;font-size:0.8125rem;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:all 0.2s ease}.lang-switch:hover{border-color:var(--primary-color);color:var(--primary-color)}.lang-icon{font-size:1rem}.footer{background-color:var(--card-bg);border-top:1px solid var(--border-color);padding:32px 24px;margin-top:auto}.footer-content{max-width:900px;margin:0 auto}.footer-main{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:24px;flex-wrap:wrap}.footer-brand h3{font-size:1.125rem;font-weight:700;color:var(--text-primary);margin-bottom:8px}.footer-mission{font-size:0.875rem;color:var(--text-secondary);max-width:300px}.footer-privacy-note{display:flex;align-items:center;gap:10px;background-color:#f0fdf4;border:1px solid #bbf7d0;border-radius:8px;padding:12px 16px;font-size:0.8125rem;color:#166534}.footer-privacy-note svg{width:20px;height:20px;flex-shrink:0;color:#16a34a}.footer-links{display:flex;align-items:center;justify-content:center;gap:16px;padding:16px 0;border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color);flex-wrap:wrap}.footer-links a{color:var(--text-secondary);text-decoration:none;font-size:0.875rem;transition:color 0.2s ease}.footer-links a:hover{color:var(--primary-color)}.footer-divider{color:var(--border-color)}.footer-copyright{text-align:center;padding-top:16px;font-size:0.8125rem;color:var(--text-secondary)}.hub-container{flex:1;max-width:1200px;margin:0 auto;padding:48px 24px;width:100%}.hub-hero{text-align:center;margin-bottom:48px}.hub-hero h1{font-size:2.5rem;font-weight:700;color:var(--text-primary);margin-bottom:12px;letter-spacing:-0.025em}.hub-hero p{font-size:1.125rem;color:var(--text-secondary)}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}.tool-card{display:flex;flex-direction:column;background-color:var(--card-bg);border:1px solid var(--border-color);border-radius:var(--border-radius);padding:24px;text-decoration:none;transition:all 0.2s ease;box-shadow:var(--shadow-sm)}.tool-card:hover{border-color:var(--primary-color);transform:translateY(-4px);box-shadow:var(--shadow-lg)}.tool-icon{font-size:2.5rem;margin-bottom:16px}.tool-card h2{font-size:1.25rem;font-weight:600;color:var(--text-primary);margin-bottom:8px}.tool-card p{font-size:0.9375rem;color:var(--text-secondary);margin-bottom:16px;flex:1}.tool-tag{display:inline-block;padding:4px 12px;background-color:#eff6ff;color:var(--primary-color);font-size:0.75rem;font-weight:500;border-radius:20px;align-self:flex-start}@media (max-width:768px){.footer-main{flex-direction:column;align-items:center;text-align:center}.footer-mission{max-width:none}.footer-privacy-note{flex-direction:column;text-align:center}.hub-hero h1{font-size:2rem}.hub-container{padding:32px 16px}}@media (max-width:480px){.header{padding:10px 12px}.logo-text{font-size:1rem}.btn-donate span{display:none}.btn-donate{padding:8px 12px}.footer{padding:24px 16px}.footer-links{gap:12px}.hub-hero h1{font-size:1.5rem}.tools-grid{grid-template-columns:1fr}}