*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
:root{--primary:#1565c0;--primary-light:#1e88e5;--accent:#4fc3f7;--aqua:#00bcd4;--bg:#fbfdff;--card:#fefeff;--text:#1a202c;--text-light:#64748b;--border:#e0e7ff;--success:#4caf50;--warning:#ff9800;--danger:#f44336;--bubble:rgba(21,101,192,0.1);--transition:all .3s ease;--shadow:0 4px 16px rgba(21,101,192,0.06);--radius:16px}
[data-theme=dark]{--primary:#1e3a8a;--primary-light:#3b82f6;--bg:#0f172a;--card:#1e293b;--text:#e2e8f0;--text-light:#94a3b8;--border:#334155;--bubble:rgba(30,58,138,.2);--shadow:0 4px 12px rgba(0,0,0,.3)}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,Cantarell,'Open Sans','Helvetica Neue',sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;position:relative;min-height:100vh}
.bubbles{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:-1}
.bubble{position:absolute;bottom:-100px;border-radius:50%;background:var(--bubble);box-shadow:0 0 8px var(--aqua);animation:rise 15s infinite ease-in}
@keyframes rise{0%{transform:translateY(0) scale(.8);opacity:0}10%{opacity:.7}90%{opacity:.4}100%{transform:translateY(-100vh) scale(1.2);opacity:0}}
.wave{position:absolute;bottom:0;left:0;width:200%;height:40px;background:radial-gradient(circle at 10% 50%,transparent 45%,var(--aqua) 50%),radial-gradient(circle at 30% 50%,transparent 45%,var(--aqua) 50%),radial-gradient(circle at 50% 50%,transparent 45%,var(--aqua) 50%),radial-gradient(circle at 70% 50%,transparent 45%,var(--aqua) 50%),radial-gradient(circle at 90% 50%,transparent 45%,var(--aqua) 50%);background-size:20% 100%;animation:wave 8s linear infinite;opacity:.2}
@keyframes wave{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}
.container{max-width:1400px;margin:0 auto;padding:0 16px}
header{text-align:center;padding:40px 0 24px;position:relative}
.logo{font-size:2.5rem;font-weight:800;color:var(--primary);margin-bottom:12px}
[data-theme=dark] .logo{color:var(--aqua)}
.subtitle{font-size:1.2rem;color:var(--text-light);max-width:700px;margin:0 auto}
.grid{display:grid;gap:24px;padding:0 0 40px}
.grid-2x3{grid-template-columns:repeat(3,1fr)}
@media(max-width:899px){.grid-2x3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:599px){.grid-2x3{grid-template-columns:1fr}header{padding:24px 0 16px}}
.card{background:var(--card);border-radius:var(--radius);padding:28px 20px;box-shadow:var(--shadow);text-align:center;transition:var(--transition);cursor:pointer;min-height:220px;display:flex;flex-direction:column;justify-content:space-between;border:1px solid var(--border)}
.card:hover{transform:translateY(-6px);box-shadow:0 8px 20px rgba(21,101,192,0.12)}
.card-icon{width:60px;height:60px;margin:0 auto 16px;background:var(--primary);border-radius:16px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:28px}
.card h3{font-size:1.3rem;margin-bottom:12px;color:var(--primary)}
[data-theme=dark] .card h3{color:var(--aqua)}
.card p{font-size:.95rem;color:var(--text-light);margin-bottom:20px}
.btn{background:var(--primary);color:#fff;border:none;padding:12px 20px;border-radius:12px;font-weight:600;cursor:pointer;transition:var(--transition);font-size:16px;width:100%}
.btn:hover{background:var(--primary-light)}
footer{text-align:center;padding:24px;font-size:.9rem;color:var(--text-light);border-top:1px solid var(--border);margin-top:24px}
.protection-badge{display:inline-block;background:var(--accent);color:#0d47a1;padding:4px 12px;border-radius:20px;font-size:.85rem;font-weight:700;margin-top:8px}
.theme-toggle{position:absolute;top:24px;right:24px;background:var(--card);border:1px solid var(--border);width:52px;height:26px;border-radius:13px;cursor:pointer;display:flex;align-items:center;padding:2px;transition:var(--transition);z-index:10}
.toggle-thumb{width:22px;height:22px;border-radius:50%;background:#4fc3f7;transition:transform .3s}
[data-theme=dark] .toggle-thumb{transform:translateX(26px);background:#94a3b8}