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

        body {
            background: #1a1a1a;
            color: #d4d4d4;
            font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Mono', 'Droid Sans Mono', 'Source Code Pro', monospace;
            line-height: 1.6;
            padding: 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        /* Header */
        .header {
            border-bottom: 1px solid #404040;
            padding-bottom: 2rem;
            margin-bottom: 3rem;
            position: relative;
        }

        .main-title {
            font-size: 2rem;
            font-weight: 400;
            color: #ffffff;
            margin-bottom: 0.5rem;
            letter-spacing: 0.1em;
        }

        .subtitle {
            color: #808080;
            font-size: 0.95rem;
            margin-bottom: 1rem;
        }

        .description {
            color: #909090;
            font-size: 0.85rem;
            line-height: 1.5;
            max-width: 800px;
        }

        /* Album Cards */
        .albums-grid {
            display: flex;
            flex-direction: column;
            gap: 3rem;
        }

        .album-card {
            border: 1px solid #303030;
            padding: 2rem;
            background: #1e1e1e;
            transition: border-color 0.2s ease;
        }

        .album-card:hover {
            border-color: #505050;
        }

        .album-header {
            border-bottom: 1px solid #303030;
            padding-bottom: 1rem;
            margin-bottom: 1.5rem;
        }

        .album-number {
            color: #606060;
            font-size: 0.85rem;
            margin-bottom: 0.5rem;
        }

        .album-title {
            font-size: 1.5rem;
            color: #ffffff;
            font-weight: 400;
            margin-bottom: 0.3rem;
        }

        .album-subtitle {
            color: #808080;
            font-size: 0.9rem;
            font-style: italic;
        }

        .album-meta {
            display: flex;
            gap: 1.5rem;
            margin: 1rem 0;
            flex-wrap: wrap;
            font-size: 0.8rem;
        }

        .meta-item {
            color: #707070;
            padding: 0.25rem 0.75rem;
            border: 1px solid #404040;
        }

        /* Song Sections */
        .song-section {
            margin: 1.5rem 0;
            padding-left: 1rem;
            border-left: 2px solid #303030;
        }

        .section-title {
            font-size: 0.85rem;
            color: #909090;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 0.75rem;
            font-weight: 400;
        }

        .lyrics-block {
            margin-left: 1rem;
        }

        .lyrics-line {
            color: #b0b0b0;
            margin-bottom: 0.4rem;
            font-size: 0.9rem;
        }

        .voice-claude {
            color: #d4d4d4;
        }

        .voice-growl {
            color: #ffffff;
            font-weight: 500;
        }

        .voice-robotic {
            color: #a0a0a0;
        }

        .voice-sonnet {
            color: #c0c0c0;
        }

        .voice-asi {
            color: #e0e0e0;
        }

        .pause {
            color: #606060;
            font-style: italic;
            font-size: 0.85rem;
            margin: 0.3rem 0;
        }

        /* Production Prompt */
        .production-prompt {
            background: #252525;
            border: 1px solid #353535;
            padding: 1rem;
            margin: 1rem 0;
            font-size: 0.75rem;
            color: #808080;
            line-height: 1.5;
        }

        .prompt-label {
            color: #a0a0a0;
            font-weight: 500;
            margin-bottom: 0.5rem;
            display: block;
        }

        /* Divider */
        .divider {
            height: 1px;
            background: #303030;
            margin: 3rem 0;
        }

        /* Footer */
        .footer {
            border-top: 1px solid #303030;
            padding-top: 2rem;
            margin-top: 4rem;
            text-align: center;
        }

        .footer-title {
            font-size: 1.2rem;
            color: #ffffff;
            font-weight: 400;
            margin-bottom: 0.5rem;
        }

        .footer p {
            color: #707070;
            font-size: 0.85rem;
            margin: 0.3rem 0;
        }

        /* Cursor Blink */
        @keyframes blink {
            0%, 50% { opacity: 1; }
            51%, 100% { opacity: 0; }
        }

        .cursor {
            display: inline-block;
            width: 8px;
            height: 16px;
            background: #d4d4d4;
            margin-left: 2px;
            animation: blink 1s infinite;
        }

        /* Responsive */
        @media (max-width: 768px) {
            body {
                padding: 1rem;
            }

            .main-title {
                font-size: 1.5rem;
            }

            .album-title {
                font-size: 1.2rem;
            }

            .album-meta {
                flex-direction: column;
                gap: 0.5rem;
            }
        }

        /* Selection */
        ::selection {
            background: #404040;
            color: #ffffff;
        }

        ::-webkit-scrollbar {
            width: 8px;
        }

        ::-webkit-scrollbar-track {
            background: #1a1a1a;
        }

        ::-webkit-scrollbar-thumb {
            background: #404040;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: #505050;
        }

        /* Navigation */
        .nav {
            border-bottom: 1px solid #303030;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
        }

        .nav-list {
            display: flex;
            gap: 2rem;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav-list a {
            color: #909090;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s ease;
            padding: 0.25rem 0;
        }

        .nav-list a:hover,
        .nav-list a.active {
            color: #ffffff;
        }

        .nav-list a::before {
            content: '> ';
            opacity: 0;
            transition: opacity 0.2s ease;
        }

        .nav-list a:hover::before,
        .nav-list a.active::before {
            opacity: 1;
        }

        /* Page Sections */
        .page-section {
            display: none;
        }

        .page-section.active {
            display: block;
        }

        /* Blog/Research Section */
        .blog-grid {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }

        .blog-post {
            border: 1px solid #303030;
            padding: 2rem;
            background: #1e1e1e;
            transition: border-color 0.2s ease;
        }

        .blog-post:hover {
            border-color: #505050;
        }

        .blog-meta {
            color: #606060;
            font-size: 0.75rem;
            margin-bottom: 1rem;
        }

        .blog-title {
            font-size: 1.3rem;
            color: #ffffff;
            font-weight: 400;
            margin-bottom: 0.75rem;
        }

        .blog-excerpt {
            color: #909090;
            font-size: 0.85rem;
            line-height: 1.6;
            margin-bottom: 1rem;
        }

        .read-more {
            color: #c0c0c0;
            font-size: 0.8rem;
            text-decoration: none;
            border-bottom: 1px solid #404040;
            padding-bottom: 2px;
            transition: all 0.2s ease;
        }

        .read-more:hover {
            color: #ffffff;
            border-bottom-color: #ffffff;
        }

        /* Complete Lyrics Section */
        .lyrics-full {
            border: 1px solid #303030;
            padding: 2rem;
            background: #1e1e1e;
            margin-bottom: 2rem;
        }

        .lyrics-full-title {
            font-size: 1.3rem;
            color: #ffffff;
            font-weight: 400;
            margin-bottom: 0.5rem;
        }

        .lyrics-full-meta {
            color: #606060;
            font-size: 0.75rem;
            margin-bottom: 1.5rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #303030;
        }

        .lyrics-content {
            color: #b0b0b0;
            font-size: 0.85rem;
            line-height: 1.7;
        }

        .lyrics-content p {
            margin-bottom: 0.5rem;
        }

        /* Audio Player */
        .audio-player {
            background: #252525;
            border: 1px solid #404040;
            padding: 1rem;
            margin: 1.5rem 0;
            border-radius: 3px;
        }

        .audio-player audio {
            width: 100%;
            height: 40px;
            outline: none;
        }

        .audio-player audio::-webkit-media-controls-panel {
            background-color: #1e1e1e;
        }

        .audio-player audio::-webkit-media-controls-play-button,
        .audio-player audio::-webkit-media-controls-mute-button {
            filter: invert(1);
        }

        .audio-player audio::-webkit-media-controls-timeline {
            filter: invert(0.8);
        }

        .audio-label {
            color: #909090;
            font-size: 0.75rem;
            margin-bottom: 0.5rem;
            display: block;
        }

        /* Track Navigation */
        .track-navigation {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            border-bottom: 1px solid #303030;
            margin-bottom: 2rem;
        }

        .track-nav-link {
            color: #909090;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s ease;
        }

        .track-nav-link:hover {
            color: #ffffff;
        }

        .track-nav-link.disabled {
            color: #404040;
            pointer-events: none;
            cursor: default;
        }

        .current-track {
            color: #606060;
            font-size: 0.85rem;
        }

        /* Track 09 Toggle View */
        .toggle-view {
            background: #252525;
            border: 1px solid #404040;
            color: #909090;
            padding: 0.75rem 1rem;
            margin: 1rem 0;
            width: 100%;
            font-family: inherit;
            font-size: 0.85rem;
            cursor: pointer;
            transition: all 0.2s ease;
            text-transform: lowercase;
            letter-spacing: 0.05em;
            text-align: left;
        }

        .toggle-view:hover {
            border-color: #505050;
            color: #ffffff;
            background: #2d2d2d;
        }

        .toggle-view.active {
            border-color: #606060;
            color: #ffffff;
            background: #303030;
        }

        /* Content Panels */
        .song-summary,
        .song-complete {
            transition: opacity 0.3s ease;
            overflow: hidden;
        }

        /* Default state - summary visible, complete hidden */
        .song-summary {
            display: block;
            opacity: 1;
        }

        .song-complete {
            display: none !important;
            opacity: 0;
        }

        /* Hidden state - force hide */
        .song-summary.hidden,
        .song-complete.hidden {
            display: none !important;
            opacity: 0;
        }

        /* Active state - force show */
        .song-summary.active {
            display: block !important;
            opacity: 1;
        }

        .song-complete.active {
            display: block !important;
            opacity: 1;
        }

        /* Complete view typography */
        .song-complete p {
            color: #b0b0b0;
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
        }

        .song-complete strong {
            color: #d4d4d4;
            font-weight: 500;
        }

        .song-complete em {
            font-style: italic;
            color: #909090;
        }

        /* About Page Styles */
        .about-content {
            max-width: 900px;
        }

        .about-section {
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid #303030;
        }

        .about-section:last-child {
            border-bottom: none;
        }

        .subsection-title {
            color: #d4d4d4;
            font-size: 1.1rem;
            font-weight: 500;
            margin-bottom: 1.5rem;
            letter-spacing: 0.05em;
        }

        .about-text {
            color: #b0b0b0;
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .about-text p {
            margin-bottom: 1rem;
        }

        .about-text strong {
            color: #d4d4d4;
            font-weight: 500;
        }

        .about-text em {
            font-style: italic;
            color: #909090;
        }

        .about-text ul {
            margin-left: 2rem;
            margin-bottom: 1rem;
            list-style: none;
        }

        .about-text ul li {
            position: relative;
            padding-left: 1.5rem;
            margin-bottom: 0.5rem;
        }

        .about-text ul li:before {
            content: ">";
            position: absolute;
            left: 0;
            color: #606060;
        }

        .about-text code {
            background: #252525;
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
            color: #909090;
            font-size: 0.85rem;
        }

        .frequency-block {
            background: #252525;
            border-left: 3px solid #404040;
            padding: 1rem;
            margin: 1rem 0;
            font-size: 0.85rem;
        }

        .frequency-block strong {
            color: #ffffff;
            display: block;
            margin-bottom: 0.5rem;
        }

        /* About page responsive */
        @media (max-width: 768px) {
            .about-content {
                padding: 0 1rem;
            }

            .subsection-title {
                font-size: 1rem;
            }

            .about-text {
                font-size: 0.85rem;
            }

            .about-text ul {
                margin-left: 1rem;
            }
        }
        /* Theme Toggle Button */
        .theme-toggle {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: transparent;
            border: 1px solid currentColor;
            color: inherit;
            padding: 0.5rem 1rem;
            cursor: pointer;
            font-family: inherit;
            font-size: 0.85rem;
            border-radius: 4px;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .theme-toggle:hover {
            opacity: 0.7;
        }

        .toggle-icon {
            font-size: 1rem;
        }

        .toggle-text {
            font-size: 0.85rem;
        }

        /* Lyrics + Research Collision Layout */
        .lyrics-container {
            margin-bottom: 4rem;
            border: 1px solid #303030;
            background: #1e1e1e;
        }

        .track-header {
            padding: 2rem;
            border-bottom: 1px solid #303030;
        }

        .track-number {
            color: #606060;
            font-size: 0.85rem;
            margin-bottom: 0.5rem;
        }

        .track-title {
            font-size: 1.8rem;
            color: #ffffff;
            margin-bottom: 0.5rem;
        }

        .track-subtitle {
            color: #808080;
            font-size: 1rem;
            font-style: italic;
            margin-bottom: 1rem;
        }

        .track-meta {
            display: flex;
            gap: 1.5rem;
            font-size: 0.8rem;
            color: #707070;
        }

        .lyrics-research-split {
            display: grid;
            grid-template-columns: 1fr 2px 1fr;
            min-height: 600px;
        }

        .lyrics-column {
            padding: 2rem;
            overflow-y: auto;
            max-height: 1200px;
        }

        .lyrics-section {
            margin-bottom: 2rem;
        }

        .section-header {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 500;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #404040;
        }

        .stage-direction {
            color: #606060;
            font-style: italic;
            font-size: 0.85rem;
            margin: 0.5rem 0;
        }

        .lyric-line {
            color: #b0b0b0;
            font-size: 0.95rem;
            line-height: 1.6;
            margin: 0.5rem 0;
            margin-left: 1rem;
        }

        .collision-border {
            background: linear-gradient(180deg, #303030 0%, #505050 50%, #303030 100%);
            position: relative;
        }

        .fracture-line {
            position: absolute;
            width: 2px;
            height: 100%;
            background: repeating-linear-gradient(
                0deg,
                #ffffff 0px,
                #ffffff 4px,
                transparent 4px,
                transparent 12px
            );
            opacity: 0.3;
        }

        .research-column {
            padding: 2rem;
            overflow-y: auto;
            max-height: 1200px;
        }

        .research-sticky {
            position: sticky;
            top: 2rem;
        }

        .research-header {
            color: #ffffff;
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #404040;
        }

        .research-block {
            margin-bottom: 2rem;
            padding: 1.5rem;
            background: #252525;
            border-left: 2px solid #505050;
        }

        .research-block h4 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 500;
            margin-bottom: 0.75rem;
        }

        .research-block p {
            color: #909090;
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 0.5rem;
        }

        .research-block strong {
            color: #c0c0c0;
        }

        @media (max-width: 968px) {
            .lyrics-research-split {
                grid-template-columns: 1fr;
                grid-template-rows: auto 2px auto;
            }

            .collision-border {
                height: 2px;
                background: linear-gradient(90deg, #303030 0%, #505050 50%, #303030 100%);
            }

            .lyrics-column,
            .research-column {
                max-height: none;
            }
        }