:root {
            
            --bg-main: #FFFFFF; 
            --bg-soft: #F0F4F8; 
            --bg-dark: #0A0F19; 
            --bg-dark-panel: #161B22; 
            
            --text-primary: #1A202C; 
            --text-secondary: #4A5568; 
            --text-light: #F9FAFB; 
            --text-light-secondary: #A0AEC0; 
            
            --accent-blue: #4299E1; 
            --accent-green: #48BB78; 
            --accent-purple: #9F7AEA; 
            --accent-yellow: #ECC94B; 
            --accent-red: #FC8181; 

            
            --border-color: #E2E8F0; 
            --border-dark: #2D3748; 
            --shadow-light: 0 10px 30px rgba(26, 32, 44, 0.08), 0 4px 12px rgba(26, 32, 44, 0.04);
            --shadow-dark: 0 15px 40px rgba(0,0,0,0.6); 

            
            --font-sans: 'Alliance No.1', sans-serif;
            --font-mono: 'Source Code Pro', monospace;

            
            --header-height: 80px;
            --container-width: 1400px; 
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;

            
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        
        *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.7; 
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            position: relative;
        }
        body.menu-open { overflow: hidden; } 

        .container { max-width: var(--container-width); margin: 0 auto; padding: 0 2rem; }
        .section { padding: 120px 0; position: relative; overflow: hidden; }
        
        .grid-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: -1;
            opacity: 0.1; 
            background-image: 
                linear-gradient(to right, var(--border-color) 1px, transparent 1px),
                linear-gradient(to bottom, var(--border-color) 1px, transparent 1px);
            background-size: 40px 40px;
            animation: grid-pan 120s linear infinite;
        }
        @keyframes grid-pan {
            from { background-position: 0 0; }
            to { background-position: -480px -480px; }
        }

        
        .eyebrow { 
            font-family: var(--font-mono); 
            font-size: 0.95rem; 
            color: var(--accent-blue); 
            font-weight: 700; 
            margin-bottom: 1rem; 
            display: block; 
            text-transform: uppercase; 
            letter-spacing: 0.08em; 
            opacity: 0.8;
        }
        .title { 
            font-size: clamp(2.8rem, 5.5vw, 4.5rem); 
            font-weight: 800; 
            letter-spacing: -0.04em; 
            line-height: 1.1; 
            margin-bottom: 1.5rem; 
            color: var(--text-primary);
        }
        .subtitle { 
            font-size: 1.2rem; 
            color: var(--text-secondary); 
            max-width: 85ch; 
            line-height: 1.8; 
            opacity: 0.9;
        }
        .text-center { text-align: center; }
        .text-center .subtitle { margin-left: auto; margin-right: auto; }


        .header {
            position: fixed; 
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: var(--header-height);
            
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: background-color var(--transition), border-color var(--transition);
        }

        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            text-decoration: none;
            flex-shrink: 0;
        }
        .nav-logo-text {
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--text-primary); 
            transition: color var(--transition);
        }
        
        
        .nav-controls {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .nav-btn {
            padding: 0.6rem 1.5rem;
            font-weight: 600;
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            border: 1px solid var(--text-primary);
            color: var(--text-primary);
            background-color: transparent;
        }
        .nav-btn:hover {
            background-color: var(--text-primary);
            color: var(--text-light);
        }
        .nav-icon-btn {
            background: none;
            border: none;
            cursor: pointer;
            font-size: 1.2rem;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-primary); 
            transition: color var(--transition), background-color var(--transition);
            border-radius: 50%;
        }
        .nav-icon-btn:hover {
            background-color: rgba(0, 0, 0, 0.05);
        }
        
        
        .nav-toggle .fa-xmark { display: none; }
        .menu-open .header .nav-toggle .fa-bars { display: none; }
        .menu-open .header .nav-toggle .fa-xmark { display: block; }
        
        
        .menu-open .header {
            background-color: transparent;
            border-bottom-color: transparent;
            backdrop-filter: none;
            -webkit-backdrop-filter: none;
        }
        .menu-open .header .nav-logo-text,
        .menu-open .header .nav-icon-btn,
        .menu-open .header .nav-btn {
            color: var(--text-light);
            border-color: var(--text-light);
        }
        .menu-open .header .nav-btn:hover {
            background-color: var(--text-light);
            color: var(--text-primary);
        }
        .menu-open .header .nav-icon-btn:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        
        .fullscreen-menu {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background-color: var(--bg-dark);
            z-index: 999; 
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: opacity var(--transition), visibility var(--transition);
            overflow-y: auto;
            padding: calc(var(--header-height) + 4rem) 2rem 4rem 2rem;
        }
        .fullscreen-menu.is-active {
            opacity: 1;
            visibility: visible;
            pointer-events: all;
        }
        .fullscreen-menu-grid {
            max-width: var(--container-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 2rem;
        }
        .fullscreen-menu-col {
            grid-column: span 3; 
        }
        .fullscreen-menu-col.main-nav {
            grid-column: span 4; 
        }
        .fullscreen-menu-col.sub-nav {
            grid-column: span 2;
        }
        .fullscreen-menu-col h5 {
            font-family: var(--font-mono);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--text-light-secondary);
            margin-bottom: 1.5rem;
            font-size: 0.8rem;
        }
        .fullscreen-menu-col ul {
            list-style: none;
        }
        .fullscreen-menu-col ul li a {
            display: block;
            text-decoration: none;
            color: var(--text-light);
            transition: color var(--transition), padding-left var(--transition);
        }
        .fullscreen-menu-col ul li a:hover {
            color: var(--accent-blue);
            padding-left: 0.5rem;
        }
        
        .fullscreen-menu-col.main-nav ul li {
            margin-bottom: 1rem;
        }
        .fullscreen-menu-col.main-nav ul li a {
            font-size: 2.5rem;
            font-weight: 700;
            letter-spacing: -0.03em;
        }
        
        .fullscreen-menu-col.sub-nav ul li {
            margin-bottom: 0.8rem;
        }
        .fullscreen-menu-col.sub-nav ul li a {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-light-secondary);
        }
        .fullscreen-menu-col.sub-nav ul li a:hover {
            color: var(--text-light);
        }


        .page-header-section {
            padding-top: calc(var(--header-height) + 80px);
            padding-bottom: 80px;
            background-color: var(--bg-soft);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .page-header-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(circle at 100% 0%, rgba(66, 153, 225, 0.05) 0%, transparent 50%),
                              radial-gradient(circle at 0% 100%, rgba(159, 122, 234, 0.05) 0%, transparent 50%);
            background-size: 600px 600px;
            background-repeat: no-repeat;
            background-position: top right, bottom left;
            opacity: 0.7;
            pointer-events: none;
        }
        
        .new-section-dark {
            background-color: var(--bg-dark);
            color: var(--text-light);
            border-top: 1px solid var(--border-dark);
            position: relative;
            overflow: hidden;
        }
        .new-section-dark::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(circle at 0% 0%, rgba(66, 153, 225, 0.08) 0%, transparent 50%),
                              radial-gradient(circle at 100% 100%, rgba(159, 122, 234, 0.08) 0%, transparent 50%);
            background-size: 800px 800px;
            background-repeat: no-repeat;
            background-position: top left, bottom right;
            opacity: 0.5;
            pointer-events: none;
        }

        .new-section-dark .title { color: var(--text-light); }
        .new-section-dark .eyebrow { color: var(--accent-purple); }
        .new-section-dark .subtitle { color: var(--text-light-secondary); }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2.5rem;
            margin-top: 4rem;
        }
        .feature-card {
            background-color: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            display: flex;
            flex-direction: column;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            position: relative;
            overflow: hidden;
        }
        .new-section-dark .feature-card {
            background-color: var(--bg-dark-panel);
            border-color: var(--border-dark);
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-light);
            border-color: var(--accent-blue);
        }
        .new-section-dark .feature-card:hover {
            box-shadow: var(--shadow-dark);
            border-color: var(--accent-blue);
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at center, rgba(66, 153, 225, 0.03) 0%, transparent 70%);
            opacity: 0;
            transition: opacity var(--transition);
            pointer-events: none;
        }
        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-card-icon {
            font-size: 2.8rem;
            color: var(--accent-blue);
            margin-bottom: 1.5rem;
            width: 72px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(145deg, rgba(66, 153, 225, 0.15), rgba(66, 153, 225, 0.05));
            border-radius: 50%;
            box-shadow: 0 4px 10px rgba(66, 153, 225, 0.1);
            transition: transform 0.2s ease;
        }
        .feature-card:hover .feature-card-icon {
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            color: var(--text-primary);
        }
        .new-section-dark .feature-card h3 { color: var(--text-light); }
        .feature-card p {
            font-size: 1rem;
            color: var(--text-secondary);
            flex-grow: 1;
            margin-bottom: 1.5rem;
            line-height: 1.7;
        }
        .new-section-dark .feature-card p { color: var(--text-light-secondary); }
        .feature-card ul {
            list-style: none;
            padding-left: 0;
            margin-top: auto;
        }
        .feature-card ul li {
            padding-left: 2rem;
            position: relative;
            margin-bottom: 0.8rem;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .new-section-dark .feature-card ul li { color: var(--text-light-secondary); }
        .feature-card ul li::before {
            content: '\f058';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--accent-green);
            position: absolute;
            left: 0;
            top: 0.1em;
            font-size: 1.1rem;
        }

        .report-placeholder {
            margin-top: 4rem;
            padding: 3.5rem;
            border: 2px dashed var(--border-color);
            border-radius: var(--radius-lg);
            text-align: center;
            background-color: var(--bg-soft);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .report-placeholder:hover {
            border-color: var(--accent-blue);
            background-color: #FFFFFF;
            box-shadow: var(--shadow-light);
        }
        .report-placeholder::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(45deg, rgba(66, 153, 225, 0.05), transparent, rgba(159, 122, 234, 0.05));
            background-size: 200% 200%;
            animation: placeholder-gradient 15s ease infinite alternate;
            pointer-events: none;
            opacity: 0.5;
        }
        @keyframes placeholder-gradient {
            0% { background-position: 0% 0%; }
            100% { background-position: 100% 100%; }
        }

        .report-placeholder i {
            font-size: 3.5rem;
            color: var(--accent-blue);
            margin-bottom: 1.2rem;
            opacity: 0.8;
        }
        .report-placeholder p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 65ch;
            margin: 0 auto;
            line-height: 1.7;
        }
        .report-placeholder p b {
            color: var(--text-primary);
        }


        .footer { 
            background-color: var(--bg-dark); 
            border-top: 1px solid var(--border-dark); 
            padding: 80px 0; 
            font-size: 0.95rem; 
        }
        .footer .container { color: var(--text-light-secondary); }
        .footer-grid { 
            display: grid; 
            grid-template-columns: 2fr repeat(4, 1fr); 
            gap: 2rem; 
            padding-bottom: 3rem; 
        }
        .footer-about h4 { 
            font-size: 1.5rem; 
            color: var(--text-light); 
            margin-bottom: 1rem; 
        }
        .footer-about p { color: var(--text-light-secondary); }
        .footer-col h5 { 
            font-family: var(--font-mono); 
            text-transform: uppercase; 
            letter-spacing: 0.05em; 
            color: var(--text-light); 
            margin-bottom: 1.5rem; 
        }
        .footer-col ul { list-style: none; padding: 0; }
        .footer-col ul li { margin-bottom: 1rem; }
        .footer-col ul a { 
            color: var(--text-light-secondary); 
            text-decoration: none; 
            transition: var(--transition); 
        }
        .footer-col ul a:hover { color: var(--text-light); }
        .footer-bottom { 
            padding-top: 2rem; 
            border-top: 1px solid var(--border-dark); 
            display: flex; 
            justify-content: space-between; 
            align-items: center; 
        }
        .footer-bottom span { color: var(--text-light-secondary); }
        .social-links { display: flex; gap: 1.5rem; }
        .social-links a { 
            color: var(--text-light-secondary); 
            font-size: 1.2rem; 
            transition: var(--transition); 
        }
        .social-links a:hover { 
            color: var(--text-light); 
            transform: translateY(-2px); 
        }


        @media (max-width: 1200px) {
            .container { padding: 0 1.5rem; }
            .feature-grid { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
            .fullscreen-menu-grid { gap: 2rem; }
            .fullscreen-menu-col.main-nav ul li a { font-size: 2.5rem; }
            .footer-grid { grid-template-columns: 2fr repeat(2, 1fr); }
            .footer-col:nth-child(4), .footer-col:nth-child(5) { grid-column: span 1; }
        }
        @media (max-width: 992px) {
            .section { padding: 100px 0; }
            .title { font-size: clamp(2.2rem, 8vw, 3.5rem); }
            .subtitle { font-size: 1.1rem; }
            .fullscreen-menu-grid { grid-template-columns: 1fr; gap: 3rem; }
            .fullscreen-menu-col, .fullscreen-menu-col.main-nav, .fullscreen-menu-col.sub-nav { grid-column: span 1; }
            .fullscreen-menu-col.main-nav ul li a { font-size: 2.2rem; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-about { grid-column: 1 / -1; margin-bottom: 2rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .social-links { margin-top: 1rem; }
            .nav-btn { display: none; }
        }
        @media (max-width: 768px) {
            .section { padding: 80px 0; }
            .page-header-section { padding-top: calc(var(--header-height) + 60px); padding-bottom: 60px; }
            .feature-grid { grid-template-columns: 1fr; }
            .feature-card { padding: 2rem; }
            .feature-card-icon { width: 64px; height: 64px; font-size: 2.5rem; }
            .feature-card h3 { font-size: 1.3rem; }
            .report-placeholder { padding: 2.5rem; }
            .report-placeholder i { font-size: 3rem; }
            .report-placeholder p { font-size: 1rem; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-col { text-align: center; }
            .footer-col ul li a { justify-content: center; }
            .footer-col ul a::before { left: 50%; transform: translateX(-50%) translateY(-50%) scaleX(0); }
            .footer-col ul a:hover::before { transform: translateX(-50%) translateY(-50%) scaleX(1); }
        }
        @media (max-width: 480px) {
            .container { padding: 0 1rem; }
            .title { font-size: clamp(1.8rem, 10vw, 2.5rem); }
            .subtitle { font-size: 0.95rem; }
            .eyebrow { font-size: 0.85rem; }
            .fullscreen-menu-col.main-nav ul li a { font-size: 1.8rem; }
            .fullscreen-menu-col.sub-nav ul li a { font-size: 0.9rem; }
        }