:root {
            --brown: #493628;
            --mint: #E2F1E7;
            --green: #A2CA71;
            --blue: #03346E;
            --white: #F9FBF9;
        }

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

        body {
            background-color: var(--mint);
            color: var(--brown);
            font-family: 'Spline Sans', sans-serif;
            overflow-x: hidden;
            scroll-behavior: smooth;
        }

        h1, h2, h3 {
            font-family: 'Spline Sans', sans-serif;
            color: var(--blue);
            font-weight: 700;
            line-height: 1.1;
        }

        .serif-italic {
            font-family: 'Playfair Display', serif;
            font-style: italic;
        }

        /* --- Header --- */
        header {
            position: fixed; top: 0; width: 100%; z-index: 1000;
            padding: 25px 5%; display: flex; justify-content: space-between; align-items: center;
            transition: all 0.4s ease;
        }
        header.scrolled {
            background: rgba(226, 241, 231, 0.9);
            backdrop-filter: blur(10px);
            padding: 15px 5%;
            box-shadow: 0 4px 30px rgba(3, 52, 110, 0.05);
        }
        .nav-link {
            color: var(--blue); font-weight: 500; font-size: 0.95rem;
            position: relative; transition: 0.3s;
        }
        .nav-link::after {
            content: ''; position: absolute; width: 0; height: 2px;
            bottom: -4px; left: 0; background: var(--green); transition: 0.3s;
        }
        .nav-link:hover::after { width: 100%; }
        .nav-link:hover { color: var(--green); }

        /* --- Hero Narrative Split --- */
        .hero {
            height: 100vh; display: flex; align-items: center; justify-content: center;
            position: relative; padding: 0 8%; overflow: hidden;
        }
        .hero-bg {
            position: absolute; width: 110%; height: 110%;
            background: radial-gradient(circle at center, rgba(162, 202, 113, 0.15) 0%, transparent 70%);
            z-index: -1; animation: floatBg 20s infinite alternate;
        }
        @keyframes floatBg { from { transform: translate(-5%, -5%); } to { transform: translate(5%, 5%); } }

        .hero-split {
            display: grid; grid-template-columns: 1fr 1.5fr 1fr; gap: 40px; align-items: center;
            text-align: center;
        }
        .side-narrative {
            font-size: 0.9rem; line-height: 1.8; opacity: 0;
            transform: translateY(20px); transition: 1s ease 0.5s;
        }
        .hero.active .side-narrative { opacity: 0.8; transform: translateY(0); }
        .hero-title {
            font-size: clamp(3rem, 6vw, 5rem); z-index: 10;
        }

        /* --- Layout Sections --- */
        .section-pad { padding: 120px 8%; }
        .panel-float {
            background: var(--white); padding: 50px; border-radius: 40px;
            box-shadow: 0 20px 60px rgba(73, 54, 40, 0.03);
            transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
            border: 1px solid transparent;
        }
        .panel-float:hover {
            transform: translateY(-15px) scale(1.02);
            border-color: var(--green);
            box-shadow: 0 40px 80px rgba(162, 202, 113, 0.15);
        }

        /* --- Timeline --- */
        .timeline-container { position: relative; max-width: 1000px; mx-auto; }
        .timeline-line {
            position: absolute; left: 50%; top: 0; bottom: 0; width: 2px;
            background: rgba(3, 52, 110, 0.1); transform: translateX(-50%);
        }
        .timeline-step {
            display: flex; justify-content: space-between; align-items: center;
            width: 100%; margin-bottom: 150px; position: relative;
        }
        .timeline-content { width: 42%; padding: 40px; border-radius: 30px; }
        .timeline-step:nth-child(even) { flex-direction: row-reverse; }
        .timeline-dot {
            position: absolute; left: 50%; width: 20px; height: 20px;
            background: var(--green); border: 4px solid var(--mint);
            border-radius: 50%; transform: translateX(-50%);
        }

        /* --- Knowledge Cards --- */
        .knowledge-grid {
            display: grid; grid-template-columns: repeat(4, 1fr); grid-template-rows: repeat(2, 300px);
            gap: 24px;
        }
        .k-card {
            background: var(--blue); color: var(--mint); border-radius: 30px;
            padding: 40px; transition: 0.5s; cursor: pointer; position: relative;
            overflow: hidden;
        }
        .k-card:hover { transform: scale(0.97); }
        .k-card.large { grid-column: span 2; grid-row: span 1; }
        .k-card.tall { grid-row: span 2; }
        .k-card.active { background: var(--green); color: var(--blue); }

        /* --- Page Transitions --- */
        .page { display: none; }
        .page.active { display: block; animation: pageFade 0.8s ease; }
        @keyframes pageFade { from { opacity: 0; } to { opacity: 1; } }

        /* --- Modal --- */
        #modal {
            position: fixed; inset: 0; z-index: 2000; display: none;
            background: rgba(3, 52, 110, 0.95); backdrop-filter: blur(20px);
            align-items: center; justify-content: center; padding: 40px;
        }
        .modal-inner {
            background: var(--mint); max-width: 800px; width: 100%;
            border-radius: 50px; padding: 60px; position: relative;
        }

        .btn-story {
            padding: 16px 40px; border-radius: 100px; font-weight: 600;
            transition: 0.4s; display: inline-block; cursor: pointer;
        }
        .btn-blue { background: var(--blue); color: var(--mint); }
        .btn-blue:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(3, 52, 110, 0.3); }

        /* --- Tools Horizontal --- */
        .tools-scroll {
            display: flex; gap: 30px; overflow-x: auto; padding-bottom: 40px;
            scrollbar-width: none;
        }
        .tool-card {
            min-width: 350px; background: var(--green); padding: 40px; border-radius: 30px;
            color: var(--blue); transition: 0.4s;
        }
        .tool-card:hover { transform: translateY(-10px) rotate(-1deg); }