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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: #2d3748;
    background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
    min-height: 100vh;
}

h1 {
    font-size: 3.5em;
    font-weight: 700;
    margin: 10px 0 28px 0;
    letter-spacing: -1px;
    color: #ffffff;
    text-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.6);
    padding: 60px;
    border-radius: 24px;
    box-shadow: 0 0 80px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

header {
    padding: 20px 30px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin: -40px -40px 20px -40px;
    display: flex;
    gap: 40px;
    align-items: flex-start;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(0, 0); opacity: 0.5; }
    50% { transform: translate(-10%, -10%); opacity: 0.8; }
}

.header-content {
    flex: 1;
    position: relative;
    z-index: 1;
    order: 2;
}

.header-logo {
    flex-shrink: 0;
    position: relative;
    z-index: 1;
    order: 1;
}

.header-logo img {
    width: 300px;
    height: auto;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.3));
    transition: transform 0.3s ease;
    border-radius: 16px;
}

.header-logo img:hover {
    transform: scale(1.05);
}

.tagline {
    font-size: 1.3em;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.6;
    max-width: 700px;
    text-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.x-icon-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 20px;
    transition: all 0.3s ease;
    text-decoration: none;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    padding: 8px;
}

.x-icon-link:hover {
    color: rgba(255, 255, 255, 1);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-2px);
}

.x-icon-link svg {
    width: 24px;
    height: 24px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

section {
    margin: 0 -40px 20px -40px;
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: box-shadow 0.3s ease;
}

section:hover {
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

h2 {
    font-size: 1.8em;
    font-weight: 600;
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: 0px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    padding-bottom: 15px;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

.archive-icon-link {
    display: inline-flex;
    align-items: center;
    color: #667eea;
    text-decoration: none;
    transition: all 0.3s ease;
    margin-left: 15px;
    vertical-align: baseline;
    position: relative;
    top: 3px;
    opacity: 0.8;
}

.archive-icon-link:hover {
    color: #764ba2;
    opacity: 1;
    transform: translateY(-2px);
}

.archive-icon-link svg {
    width: 24px;
    height: 24px;
    display: block;
}

.roadmap-section {
    margin-bottom: 40px;
}

.roadmap-section h3 {
    font-size: 1.3em;
    font-weight: 600;
    margin-bottom: 10px;
    padding-bottom: 5px;
    color: #4a5568;
    border-bottom: 2px solid #e2e8f0;
}

.section-description {
    margin-bottom: 12px;
    padding: 0 30px;
    line-height: 1.6;
}

.roadmap-items {
    list-style: none;
    padding-left: 30px;
}

.roadmap-item {
    padding: 12px 16px;
    margin-bottom: 8px;
    border-radius: 8px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-left: 4px solid #667eea;
    transition: all 0.3s ease;
}

.roadmap-item:hover {
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.2);
    border-left-color: #764ba2;
}

.roadmap-item:last-child {
    margin-bottom: 0;
}

.roadmap-item strong {
    font-size: 1.05em;
    color: #2d3748;
    display: block;
    margin-bottom: 6px;
}

.roadmap-item .description {
    color: #718096;
    line-height: 1.6;
}

.roadmap-item .sub-items {
    margin-top: 8px;
    padding-left: 20px;
    color: #718096;
    list-style-type: lower-alpha;
}

.roadmap-item .sub-items li {
    margin-bottom: 4px;
    line-height: 1.6;
}

.roadmap-item .sub-items li:last-child {
    margin-bottom: 0;
}

.notes-list {
    list-style: none;
}

.note-item {
    padding: 20px;
    margin-bottom: 12px;
    border-radius: 10px;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.note-item:hover {
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.15);
    border-color: #667eea;
}

.note-item:last-child {
    margin-bottom: 0;
}

.note-item a {
    color: #667eea;
    text-decoration: none;
    font-size: 1.1em;
    font-weight: 500;
    transition: color 0.3s ease;
}

.note-item a:hover {
    color: #764ba2;
}

.note-date {
    color: #a0aec0;
    font-size: 0.9em;
    font-weight: 500;
    background: #f7fafc;
    padding: 4px 12px;
    border-radius: 20px;
    white-space: nowrap;
}

.empty-state {
    color: #a0aec0;
    font-style: italic;
    padding: 40px 0;
    text-align: center;
    font-size: 1.1em;
}

footer {
    margin: 0 -40px -40px -40px;
    padding: 20px;
    text-align: center;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

footer p {
    color: #4a5568;
    font-size: 0.9em;
    font-weight: 500;
}

@media (max-width: 768px) {
    .container {
        padding: 20px 10px;
    }

    .content-wrapper {
        padding: 30px;
        border-radius: 16px;
    }

    header {
        flex-direction: column;
        padding: 30px;
        margin: -20px -20px 40px -20px;
        gap: 15px;
    }

    .header-logo {
        order: -1;
        text-align: center;
        margin-bottom: -10px;
    }

    .header-logo img {
        width: 200px;
    }

    h1 {
        font-size: 2.2em;
    }

    .tagline {
        font-size: 1.1em;
    }

    section {
        margin: 0 -20px 40px -20px;
        padding: 30px;
    }

    footer {
        margin: 0 -20px -20px -20px;
        padding: 30px;
    }

    h1 {
        font-size: 2.2em;
        margin: 0 0 15px 0;
    }

    h2 {
        font-size: 1.3em;
    }

    .archive-icon-link {
        margin-left: 8px;
    }

    .note-item {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        padding: 15px;
    }

    .note-item a {
        display: block;
    }

    .note-date {
        align-self: flex-start;
        margin-left: 0;
        padding-left: 0;
    }
}