:root {
            --primary: rgb(88,86,214);
            --primary-light: rgba(88,86,214, 0.1);
            --primary-dark: rgb(68,66,194);
            --glacier-blue: #1D7BFF;
            --glacier-light: #E0F2FE;
            --glacier-bg: #F0F9FF;
            --silver-white: #F8FAFC;
            --deep-sea-ink: #0F172A;
            --deep-sea-light: #1E293B;
            --text-dark: #334155;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
            --max-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-dark);
            background-color: #F8FAFC;
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: var(--transition);
        }

        .header-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
        }

        .logo img {
            display: block;
            height: 40px;
            width: auto;
            max-width: 160px;
            object-fit: contain;
            flex-shrink: 0;
        }

        .logo span {
            display: inline-block;
            font-size: 18px;
            font-weight: 800;
            line-height: 1;
            color: var(--deep-sea-ink);
            white-space: nowrap;
        }

        nav.nav-desktop {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        nav.nav-desktop a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-dark);
            padding: 8px 12px;
            border-radius: 6px;
        }

        nav.nav-desktop a:hover, nav.nav-desktop a.active {
            color: var(--primary);
            background-color: var(--primary-light);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-register-top {
            background-color: var(--primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(88,86,214, 0.2);
        }

        .btn-register-top:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--deep-sea-ink);
        }

        
        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(15, 23, 42, 0.6);
            backdrop-filter: blur(4px);
            z-index: 200;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }

        .drawer-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .drawer {
            position: fixed;
            top: 0;
            left: -320px;
            width: 300px;
            height: 100%;
            background-color: #fff;
            z-index: 201;
            box-shadow: 4px 0 24px rgba(0,0,0,0.15);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            padding: 24px;
        }

        .drawer.active {
            left: 0;
        }

        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 16px;
        }

        .drawer-close {
            background: none;
            border: none;
            font-size: 28px;
            cursor: pointer;
            color: var(--text-muted);
        }

        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 16px;
            overflow-y: auto;
            flex-grow: 1;
        }

        .drawer-nav a {
            font-size: 16px;
            font-weight: 600;
            color: var(--deep-sea-ink);
            padding: 12px;
            border-radius: 8px;
            display: block;
        }

        .drawer-nav a:hover {
            background-color: var(--primary-light);
            color: var(--primary);
        }

        
        .page-hero {
            background: linear-gradient(135deg, var(--deep-sea-ink) 0%, var(--deep-sea-light) 100%);
            color: #fff;
            padding: 80px 20px;
            text-align: center;
        }

        .page-hero-inner {
            max-width: 800px;
            margin: 0 auto;
        }

        .page-hero h1 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .page-hero p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
        }

        
        .content-container {
            max-width: 900px;
            margin: 0 auto;
            padding: 60px 20px 100px;
        }

        .about-card {
            background-color: #fff;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            padding: 40px;
            margin-bottom: 40px;
        }

        .about-card h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--deep-sea-ink);
            margin-bottom: 20px;
            border-bottom: 2px solid var(--primary-light);
            padding-bottom: 12px;
        }

        .about-card p {
            font-size: 16px;
            color: var(--text-dark);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        
        .value-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
            margin-top: 30px;
        }

        .value-node {
            background-color: var(--silver-white);
            border-radius: 12px;
            padding: 24px;
            border: 1px solid var(--border-color);
        }

        .value-node h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--deep-sea-ink);
            margin-bottom: 10px;
        }

        .value-node p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        
        footer {
            background-color: var(--deep-sea-ink);
            color: rgba(255, 255, 255, 0.6);
            border-top: 1px solid var(--deep-sea-light);
            font-size: 14px;
        }

        .footer-top {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 80px 20px 40px;
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: 40px;
        }

        .footer-brand .logo span {
            color: #fff;
        }

        .footer-brand p {
            margin-top: 20px;
            line-height: 1.7;
        }

        .footer-column h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 24px;
            position: relative;
        }

        .footer-column ul {
            list-style: none;
        }

        .footer-column ul li {
            margin-bottom: 12px;
        }

        .footer-column ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid var(--deep-sea-light);
            padding: 30px 20px;
        }

        .footer-bottom-container {
            max-width: var(--max-width);
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-copyright {
            font-size: 13px;
        }

        .footer-meta-links {
            display: flex;
            gap: 20px;
        }

        
        @media (max-width: 768px) {
            nav.nav-desktop, .header-actions {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }