*{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary:#f5f7fa;--bg-primary-rgb:245, 247, 250;--bg-secondary:#eef0f3;--surface:#fff;--surface-hover:#f0f2f5;--primary:#5f7a92;--primary-light:#7c93aa;--primary-dark:#405b73;--text:#1a2632;--text-secondary:#3e4c5a;--text-muted:#6b7a88;--border:#d0d9e2;--shadow:0 20px 35px -10px #0014281a;--shadow-hover:0 25px 40px -12px #5f7a9233;--radius:16px;--radius-sm:8px;--transition:all .25s ease;--sidebar-width:260px}body.dark-mode{--bg-primary:#0f1419;--bg-primary-rgb:15, 20, 25;--bg-secondary:#1a2128;--surface:#232b33;--surface-hover:#2c3640;--primary:#5f7a92;--primary-light:#a6b8c9;--primary-dark:#405b73;--text:#eef2f5;--text-secondary:#a0b3c5;--text-muted:#6f859a;--border:#2d3843;--shadow:0 20px 35px -10px #0009;--shadow-hover:0 25px 40px -12px #5f7a924d}body{background:var(--bg-primary);color:var(--text);font-family:Inter,sans-serif;font-weight:400;line-height:1.6;transition:background-color .3s,color .3s,border-color .3s;display:flex;overflow-x:hidden}.sidebar{height:100vh;width:var(--sidebar-width);background:rgba(var(--bg-primary-rgb), .85);-webkit-backdrop-filter:blur(16px);border-right:1px solid var(--border);z-index:200;flex-direction:column;padding:28px 0;transition:background .3s,border-color .3s;display:flex;position:fixed;top:0;left:0;box-shadow:4px 0 25px #0000004d}.sidebar-header{border-bottom:1px solid var(--border);padding:0 24px 28px}.sidebar-logo{color:var(--text);letter-spacing:-.02em;align-items:center;gap:12px;font-size:1.4rem;font-weight:600;text-decoration:none;display:flex}.sidebar-logo i{color:var(--primary-light);font-size:2rem;transition:color .3s}.sidebar-logo .accent{color:var(--primary-light);font-weight:700}.sidebar-nav{flex-direction:column;flex:1;gap:6px;padding:30px 16px;display:flex}.nav-link{color:var(--text-secondary);transition:var(--transition);border-radius:40px;align-items:center;gap:16px;padding:12px 20px;font-size:.95rem;font-weight:500;text-decoration:none;display:flex}.nav-link i{min-width:24px;color:var(--primary-light);transition:var(--transition);font-size:1.3rem}.nav-link span{font-size:1rem}.nav-link:hover,.nav-link.active{background:var(--primary);color:var(--bg-primary)}.nav-link:hover i,.nav-link.active i{color:var(--bg-primary)}.sidebar-footer{border-top:1px solid var(--border);flex-direction:column;gap:12px;padding:20px 20px 10px;display:flex}.theme-toggle{border:1px solid var(--border);cursor:pointer;color:var(--text-secondary);transition:var(--transition);background:0 0;border-radius:40px;justify-content:center;align-items:center;gap:8px;width:100%;padding:8px 12px;display:flex}.theme-toggle i{font-size:1.2rem}.theme-toggle .fa-sun{color:#f59e0b}.theme-toggle .fa-moon{color:#94a3b8}body.dark-mode .theme-toggle .fa-sun,body:not(.dark-mode) .theme-toggle .fa-moon{display:none}.sidebar-join{border:1.5px solid var(--primary-light);width:100%;color:var(--primary-light);background:0 0;justify-content:center}.sidebar-join:hover{background:var(--primary-light);color:var(--bg-primary);border-color:var(--primary-light)}.mobile-menu-btn{z-index:250;background:var(--surface);border:1px solid var(--border);color:var(--text);cursor:pointer;width:48px;height:48px;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:50%;justify-content:center;align-items:center;font-size:1.5rem;transition:background .3s,border-color .3s,color .3s;display:none;position:fixed;top:20px;left:20px}.main-content{margin-left:var(--sidebar-width);width:calc(100% - var(--sidebar-width));transition:margin-left .3s}.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}.hero{align-items:center;min-height:100vh;display:flex;position:relative;overflow:hidden}#bg-canvas{z-index:0;pointer-events:none;opacity:.5;width:100%;height:100%;position:absolute;top:0;left:0}.hero-content{z-index:2;text-align:center;max-width:800px;margin:0 auto;position:relative}.hero-badge{color:var(--primary-light);letter-spacing:1.5px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#5f7a921a;border:1px solid #a6b8c933;border-radius:40px;margin-bottom:24px;padding:6px 20px;font-size:.8rem;font-weight:500;transition:color .3s,border-color .3s;display:inline-block}.hero-title{letter-spacing:-.02em;margin-bottom:16px;font-size:clamp(2.8rem,10vw,5.5rem);font-weight:700;line-height:1.1}.hero-title .block{display:block}.hero-title .accent{color:var(--primary-light);font-weight:800;transition:color .3s}.hero-subtitle{color:var(--text-secondary);margin-bottom:40px;font-size:1.3rem;font-weight:400;transition:color .3s}.hero-actions{flex-wrap:wrap;justify-content:center;gap:20px;display:flex}.scroll-indicator{background:linear-gradient(to bottom, var(--primary-light), transparent);z-index:2;opacity:.6;width:2px;height:60px;transition:background .3s;animation:2s infinite pulse;position:absolute;bottom:30px;left:50%;transform:translate(-50%)}@keyframes pulse{0%{opacity:.2;transform:translate(-50%)scaleY(.5)}50%{opacity:1;transform:translate(-50%)scaleY(1)}to{opacity:.2;transform:translate(-50%)scaleY(.5)}}.section{z-index:2;padding:90px 0;position:relative}.alt-bg{background:var(--bg-secondary);transition:background .3s}.section-header{border-left:4px solid var(--primary-light);margin-bottom:50px;padding-left:24px;transition:border-color .3s}.section-tag{letter-spacing:3px;color:var(--primary-light);text-transform:uppercase;margin-bottom:6px;font-size:.75rem;font-weight:600;transition:color .3s;display:block}.section-header h2{letter-spacing:-.01em;font-size:clamp(2rem,4vw,3.2rem);font-weight:600}.section-header .accent{color:var(--primary-light);font-weight:700;transition:color .3s}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);transition:var(--transition), background .3s, border-color .3s, box-shadow .3s;border:1px solid var(--border);padding:32px}.card:hover{box-shadow:var(--shadow-hover);border-color:var(--primary-light);transform:translateY(-4px)}.about-grid{grid-template-columns:1fr 1fr;gap:40px;display:grid}.about-text .lead{color:var(--primary-light);margin-bottom:20px;font-size:1.3rem;font-weight:500;transition:color .3s}.about-text p{color:var(--text-secondary);margin-bottom:30px;transition:color .3s}.stats{gap:30px;margin-top:30px;display:flex}.stat-item{text-align:center}.stat-value{color:var(--primary-light);font-size:1.8rem;font-weight:700;transition:color .3s;display:block}.stat-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-size:.8rem;transition:color .3s}.concepts-cloud{flex-direction:column;justify-content:center;display:flex}.concepts-title{color:var(--primary-light);text-align:center;margin-bottom:24px;font-size:1.6rem;font-weight:500;transition:color .3s}.concepts-grid{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.concept-chip{border:1px solid var(--border);color:var(--text-secondary);transition:var(--transition), background .3s, color .3s, border-color .3s;background:#5f7a9214;border-radius:40px;padding:10px 22px;font-size:.9rem;font-weight:500}.concept-chip:hover{background:var(--primary);color:var(--bg-primary);border-color:var(--primary);transform:scale(1.02)}.details-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:25px;display:grid}.detail-card{text-align:center;padding:28px 20px}.detail-card i{color:var(--primary-light);margin-bottom:16px;font-size:2.2rem;transition:color .3s}.detail-card h3{margin-bottom:8px;font-size:1.2rem;font-weight:600}.detail-card p{color:var(--text-secondary);font-size:.95rem;font-weight:400;transition:color .3s}.leaders-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px;display:grid}.leader-card{text-align:center;padding:28px 20px}.leader-avatar{width:100px;height:100px;color:var(--bg-primary);border:2px solid var(--primary-light);border-radius:50%;justify-content:center;align-items:center;margin:0 auto 16px;font-size:2.8rem;transition:border-color .3s,background .3s,color .3s;display:flex;background:var(--primary-light)!important}.leader-card h3{margin-bottom:4px;font-size:1.4rem;font-weight:600}.role{color:var(--primary-light);text-transform:uppercase;letter-spacing:1px;font-size:.75rem;font-weight:500;transition:color .3s}.activities-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:25px;display:grid}.activity-card{text-align:center;padding:28px 20px}.activity-card i{color:var(--primary-light);margin-bottom:16px;font-size:2.2rem;transition:color .3s}.activity-card h3{margin-bottom:8px;font-size:1.2rem;font-weight:600}.activity-card p{color:var(--text-secondary);font-size:.9rem;transition:color .3s}.footer{background:var(--bg-secondary);border-top:1px solid var(--border);margin-top:60px;padding:60px 0 0;transition:background .3s,border-color .3s}.footer-grid{grid-template-columns:1.5fr 1fr 1.5fr;gap:40px;margin-bottom:40px;display:grid}.footer-brand{flex-direction:column;gap:16px;display:flex}.footer-logo{color:var(--text);align-items:center;gap:10px;font-size:1.6rem;font-weight:600;transition:color .3s;display:flex}.footer-logo i{color:var(--primary-light);transition:color .3s}.footer-tagline{color:var(--text-secondary);font-size:1rem;font-style:italic;transition:color .3s}.footer-social{gap:20px;margin-top:10px;display:flex}.footer-social a{color:var(--text-secondary);font-size:1.5rem;transition:color .2s}.footer-social a:hover{color:var(--primary-light)}.footer-links h4,.footer-contact h4{color:var(--text);text-transform:uppercase;letter-spacing:1px;margin-bottom:20px;font-size:1.1rem;font-weight:600;transition:color .3s}.footer-links ul{list-style:none}.footer-links li{margin-bottom:12px}.footer-links a{color:var(--text-secondary);text-decoration:none;transition:color .2s}.footer-links a:hover{color:var(--primary-light)}.footer-contact p{color:var(--text-secondary);align-items:center;gap:8px;margin-bottom:12px;transition:color .3s;display:flex}.footer-contact i{color:var(--primary-light);width:20px;transition:color .3s}.developer-credit a{color:var(--primary-light);border-bottom:1px dotted;text-decoration:none}.developer-credit a:hover{border-bottom-style:solid}.footer-bottom{text-align:center;color:var(--text-muted);background:#0000001a;padding:20px 0;font-size:.9rem;transition:background .3s,color .3s}.notification{background:var(--surface);color:var(--primary-light);box-shadow:var(--shadow-hover);z-index:300;border:1px solid var(--primary-light);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:40px;padding:14px 28px;font-weight:500;transition:transform .4s,background .3s,color .3s,border-color .3s;position:fixed;bottom:30px;right:30px;transform:translate(400px)}.notification.show{transform:translate(0)}.btn{cursor:pointer;transition:var(--transition), background .3s, color .3s, border-color .3s;background:0 0;border:1.5px solid #0000;border-radius:40px;align-items:center;gap:8px;padding:10px 24px;font-family:inherit;font-size:.95rem;font-weight:500;display:inline-flex}.btn-primary{background:var(--primary);color:var(--bg-primary)}.btn-primary:hover{background:var(--primary-light);box-shadow:0 10px 20px -8px var(--primary-light);transform:translateY(-2px)}.btn-outline{border-color:var(--primary-light);color:var(--primary-light);background:0 0}.btn-outline:hover{background:var(--primary-light);color:var(--bg-primary);transform:translateY(-2px)}.btn-large{padding:14px 36px;font-size:1rem}@media (width<=900px){body{display:block}.sidebar{width:280px;transition:transform .3s;transform:translate(-100%)}.sidebar.active{transform:translate(0)}.main-content{width:100%;margin-left:0}.mobile-menu-btn{display:flex}.about-grid{grid-template-columns:1fr}.stats{justify-content:center}.footer-grid{grid-template-columns:1fr;gap:30px}}@media (width<=600px){.container{padding:0 20px}.hero-actions{flex-direction:column;align-items:stretch}.btn-large{justify-content:center;width:100%}.section-header h2{font-size:1.8rem}.card{padding:24px 16px}.stat-value{font-size:1.4rem}}