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

        body {
            font-family: 'DM Sans', sans-serif;
            background-color: #fefefd;
            min-height: 100vh;
            position: relative;
            overflow-x: hidden;
        }

        .nav-frame {
            position: fixed;
            left: 20px;
            top: 20px;
            display: flex;
            gap: 15px;
            z-index: 100;
        }

        .nav-item {
            padding: 10px 24px;
            border-radius: 30px;
            cursor: pointer;
            transition: transform 0.2s ease;
        }

        .nav-item:hover {
            transform: translateY(-2px);
        }

        .nav-debate {
            background-color: #6b6b6b;
        }

        .nav-timeline {
            background-color: #e2e2ee;
        }

        .nav-item p {
            font-size: 16px;
            font-weight: 700;
            text-align: center;
            margin: 0;
        }

        .nav-debate p {
            color: white;
        }

        .nav-timeline p {
            color: black;
        }

        .container {
            position: relative;
            width: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            padding-top: 80px;
            padding-bottom: 100px;
            gap: 50px;
        }

        /* Decorative Vectors */
        .vector-1 {
            position: absolute;
            left: -165px;
            top: -200px;
            width: 1469.91px;
            height: 2173.43px;
            transform: rotate(357.876deg);
            pointer-events: none;
            z-index: 0;
        }

        .vector-2 {
            position: absolute;
            left: 200px;
            top: 363px;
            width: 633.367px;
            height: 2786.83px;
            transform: rotate(270deg);
            pointer-events: none;
            z-index: 0;
        }

        /* Main Title */
        .main-title {
            width: 90%;
            max-width: 876px;
            font-size: 64px;
            font-weight: 400;
            text-align: center;
            line-height: 1.1;
            color: black;
            z-index: 10;
            margin-bottom: 20px;
        }

        /* General Section Styles */
        .bubble {
            position: relative;
            width: 37vw;
            min-width: 400px;
            height: auto;
            border: 2px dashed black;
            border-radius: 27px;
            padding: 40px;
            z-index: 10;
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
        }

        /* Introduction Section */
        .intro-section {
            background-color: white;
            text-align: center;
        }

        .intro-section p {
            font-size: 1.25rem;
            line-height: 1.4;
            color: black;
        }

        /* Over Section */
        .over-section {
            background-color: #d9eaf2;
            align-items: center;
        }

        .over-content-wrapper {
            width: 100%;
            max-width: 450px;
            display: flex;
            flex-direction: column;
            align-items: left;
        }

        /* Under Section */
        .under-section {
            background-color: #ac4646;
            align-items: center;
        }

        .under-content-wrapper {
            width: 100%;
            max-width: 450px;
            display: flex;
            flex-direction: column;
            align-items: right; 
        }

        /* Diagrams */
        .diagram-container {
            position: relative;
            width: 120px;
            height: 120px;
            margin-bottom: 20px;
        }

        /* Titles */
        .section-title {
            font-size: 40px;
            font-weight: 400;
            line-height: normal;
            margin-bottom: 15px;
        }

        .over-section .section-title { color: black; }
        .under-section .section-title { color: white; }

        /* Text Blocks */
        .section-text {
            font-size: 20px;
            line-height: 1.4;
        }

        /* Over: Left Alignment preserved */
        .over-section .section-text {
            text-align: left;
            color: black;
            width: 100%;
        }

        /* Under: Right Alignment preserved */
        .under-section .section-text {
            text-align: right;
            color: white;
            width: 100%;
        }

        /* History Section */
        .history-section {
            background-color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
        }

        .history-section p {
            font-size: 36px;
            line-height: 1.2;
            color: black;
        }

        /* Timeline Section */
        .timeline-section {
            background-color: white;
            padding: 40px 60px 12px 60px;
        }

        .timeline-section p {
            font-size: 20px;
            line-height: 1.5;
            color: black;
            margin-bottom: 20px;
        }

        /* Responsive adjustments */
        @media (max-width: 1000px) {
            .main-title { font-size: 48px; }
            .bubble { width: 80vw; min-width: auto; }
        }

        @media (max-width: 600px) {
            .nav-frame { width: 100%; justify-content: center; left: 0; }
            .bubble { width: 90vw; padding: 20px 20px 12px 20px; }
            .diagram-container { transform: scale(0.8); }
        }