:root {
      --bg-dark: #ffffff;
      --panel-bg: #ffffff;
      --border-color: rgba(0, 0, 0, 0.10);
      --border-accent: rgba(0, 0, 0, 0.28);

      --text-main: #171717;
      --text-muted: #747474;

      --accent-gold: #9b7a32;
      --accent-cyan: #287c86;
      --accent-magenta: #8d4fa0;
      --apple-blue: #0071e3;

      --font-mono: 'SF Mono', 'Courier New', Courier, monospace;
      --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    }

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

    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: var(--font-sans);
      line-height: 1.5;
      -webkit-font-smoothing: antialiased;
      padding-bottom: 80px;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    .app-layout {
      display: flex;
      width: 100%;
      min-height: 100vh;
    }

    /* Desktop Sidebar */
    .sticky-sidebar {
      position: sticky;
      top: 0;
      height: 100vh;
      width: 180px;
      flex-shrink: 0;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      align-items: center;
      padding: 40px 16px;
      border-right: 1px solid var(--border-color);
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      z-index: 1000;
    }

    .sidebar-top-group {
      display: flex;
      flex-direction: column;
      align-items: center;
      width: 100%;
    }

    .sidebar-brand {
      margin-bottom: 0;
      display: flex;
      justify-content: center;
      align-items: center;
      width: 100%;
    }

    .sidebar-brand-link {
      display: inline-block;
      transition: transform 0.2s ease, opacity 0.2s ease;
    }

    .sidebar-brand-link:hover {
      opacity: 0.8;
      transform: scale(1.03);
    }

    .sidebar-brand-logo {
      height: 28px;
      width: auto;
      max-width: 100%;
      display: block;
    }

    /* Mobile Menu Toggle Button */
    .mobile-menu-toggle {
      display: none;
      background: transparent;
      border: none;
      outline: none;
      cursor: pointer;
      color: var(--text-main);
      padding: 4px;
      transition: opacity 0.2s ease, transform 0.2s ease;
    }

    .mobile-menu-toggle:hover {
      opacity: 0.7;
      transform: scale(1.05);
    }

    .mobile-menu-toggle svg {
      width: 24px;
      height: 24px;
      fill: currentColor;
      display: block;
    }

    .mobile-nav-content {
      display: flex;
      flex-direction: column;
      align-items: center;
      width: 100%;
      height: 100%;
      justify-content: space-between;
    }

    .campaign-tabs {
      display: flex;
      flex-direction: column;
      gap: 40px;
      align-items: center;
      justify-content: center;
      list-style: none;
      width: 100%;
      margin: auto 0;
    }

    .tab-btn {
      background: none;
      border: none;
      outline: none;
      cursor: pointer;
      padding: 0;
      margin: 0;
      opacity: 0.35;
      transition: opacity 0.3s ease, transform 0.3s ease, filter 0.3s ease;
      display: flex;
      justify-content: center;
      align-items: center;
      width: 100%;
    }

    .tab-btn .tab-img {
      max-width: 110px;
      max-height: 36px;
      width: auto;
      height: auto;
      display: block;
      filter: grayscale(100%);
      transition: filter 0.3s ease, transform 0.3s ease;
    }

    .tab-btn:hover {
      opacity: 0.8;
      transform: scale(1.05);
    }

    .tab-btn.active {
      opacity: 1;
      transform: scale(1.08);
    }

    .tab-btn.active .tab-img {
      filter: grayscale(0%);
    }

    .sidebar-actions {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 16px;
      margin-top: 0;
      padding-top: 24px;
      border-top: 1px solid var(--border-color);
      width: 100%;
    }

    .sidebar-action {
      font-family: var(--font-mono);
      font-size: 0.62rem;
      letter-spacing: 0.12em;
      color: var(--text-muted);
      text-transform: uppercase;
      text-align: center;
      transition: color 0.2s ease, transform 0.2s ease;
    }

    .sidebar-action:hover {
      color: var(--text-main);
      transform: translateX(2px);
    }

    .sidebar-footer-link {
      font-family: var(--font-mono);
      font-size: 0.7rem;
      letter-spacing: 0.1em;
      color: var(--text-muted);
    }

    .main-content {
      flex-grow: 1;
      max-width: calc(100vw - 180px);
      padding: 0 48px;
    }

    .container {
      max-width: 1000px;
      margin: 0 auto;
    }

    .hero-section {
      padding-top: 140px;
      padding-bottom: 90px;
      text-align: center;
    }

    .hero-image-wrapper {
      display: flex;
      justify-content: center;
      align-items: center;
      margin: 0 auto 32px auto;
      width: 100%;
      max-width: 860px;
    }

    .hero-starter-img {
      width: 100%;
      height: auto;
      max-height: 400px;
      object-fit: cover;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.08);
      display: block;
    }

    .hero-title {
      font-size: clamp(2.5rem, 5vw, 4.2rem);
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.05;
      margin-bottom: 24px;
      text-transform: uppercase;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto 40px auto;
      font-weight: 400;
    }

    .hero-scroll-prompt {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      letter-spacing: 0.2em;
      color: var(--text-muted);
      text-transform: uppercase;
    }

    .campaign-deck {
      padding: 90px 0;
      scroll-margin-top: 40px;
    }

    .campaign-header {
      margin-bottom: 60px;
    }

    .campaign-tag {
      font-family: var(--font-mono);
      font-size: 0.8rem;
      color: var(--accent-gold);
      letter-spacing: 0.15em;
      text-transform: uppercase;
      margin-bottom: 8px;
      display: block;
    }

    .campaign-title {
      font-size: 2.5rem;
      font-weight: 800;
      letter-spacing: -0.01em;
    }

    .card-stack-container {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6rem;
      margin-bottom: 60px;
    }

    .card-wrapper {
      position: sticky;
      top: 100px;
      width: 100%;
      max-width: 860px;
      height: 400px;
      outline: none;
      border-radius: 12px;
      box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.08);
      background: var(--panel-bg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .card-media-bg {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: 0;
    }

    .card-wrapper video.card-media-bg {
      z-index: 1;
      filter: none;
      opacity: 1;
      mix-blend-mode: normal;
    }

    .card-face-scrim {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(0, 0, 0, 0.35) 0%, rgba(0, 0, 0, 0.75) 100%);
      z-index: 2;
    }

    .card-face-header {
      position: relative;
      z-index: 3;
      padding: 2.5rem 2.5rem 0 2.5rem;
    }

    .card-face-body {
      position: relative;
      z-index: 3;
      padding: 0 2.5rem 2.5rem 2.5rem;
    }

    .stage-num {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: #f3e5ab;
      letter-spacing: 0.1em;
      text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
      text-transform: uppercase;
    }

    .stage-title {
      font-size: 1.75rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: #ffffff;
      text-shadow: 0 2px 10px rgba(0, 0, 0, 0.7);
    }

    .stage-desc {
      font-size: 1.05rem;
      color: #ffffff;
      line-height: 1.6;
      text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
    }

    .treatment-broadcast .caption-overlay {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: flex-start;
      padding: 0 0 40px 40px;
      pointer-events: none;
      z-index: 5;
    }

    .caption-box {
      background: transparent !important;
      border: none !important;
      box-shadow: none !important;
      backdrop-filter: none !important;
      display: flex;
      flex-wrap: wrap;
      gap: 6px 10px;
      max-width: 60%;
      transition: opacity 0.2s ease;
    }

    .align-block-left {
      justify-content: flex-start;
      text-align: left;
    }

    .word {
      display: inline-block;
      font-size: 1.5rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: rgba(255, 255, 255, 0.4);
      transform: translateY(10px);
      opacity: 0;
      transition: color 0.15s ease, transform 0.25s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.25s cubic-bezier(0.25, 1, 0.5, 1);
      filter: drop-shadow(0px 4px 8px rgba(0, 0, 0, 0.9)) 
              drop-shadow(0px 2px 4px rgba(0, 0, 0, 0.8));
    }

    .word.active {
      color: #ffffff;
      opacity: 1;
      transform: translateY(0);
    }

    .word.highlight {
      font-size: 1.65rem;
    }

    .word.italic {
      font-style: italic;
    }

    .card-audio-toggle {
      position: absolute;
      top: 24px;
      right: 24px;
      z-index: 10;
      background: rgba(0, 0, 0, 0.45);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.25);
      border-radius: 50%;
      width: 40px;
      height: 40px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: background-color 0.2s ease, transform 0.2s ease;
      color: #ffffff;
    }

    .card-audio-toggle:hover {
      background: rgba(0, 0, 0, 0.75);
      transform: scale(1.05);
    }

    .card-audio-toggle svg {
      width: 18px;
      height: 18px;
      fill: currentColor;
    }

    .sonic-preview-group {
      margin-top: 16px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .video-hero-section {
      position: relative;
      width: 100%;
      min-height: 85vh; 
      border-radius: 12px;
      display: flex;
      align-items: flex-end;
      justify-content: flex-start;
      overflow: hidden;
      margin-bottom: 40px;
      border: 1px solid var(--border-color);
    }

    .video-bg {
      position: absolute;
      top: 50%;
      left: 50%;
      min-width: 100%;
      min-height: 100%;
      width: auto;
      height: 100%;
      object-fit: cover;
      transform: translate(-50%, -50%);
      z-index: 1;
    }

    .video-scrim {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(0,0,0,0.20) 0%, rgba(0,0,0,0.65) 100%);
      z-index: 2;
    }

    .video-overlay-content {
      position: relative;
      z-index: 3;
      text-align: left;
      max-width: 600px;
      padding: 0 0 40px 40px;
    }

    .video-audio-toggle {
      position: absolute;
      bottom: 24px;
      right: 24px;
      z-index: 10;
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      border: 1px solid var(--border-color);
      border-radius: 50%;
      width: 44px;
      height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: background-color 0.2s ease, transform 0.2s ease;
      color: var(--text-main);
    }

    .video-audio-toggle:hover {
      background: #ffffff;
      transform: scale(1.05);
    }

    .video-audio-toggle svg {
      width: 18px;
      height: 18px;
      fill: currentColor;
    }

    .hero-badge {
      display: inline-block;
      padding: 6px 16px;
      background: rgba(0, 0, 0, 0.65);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 999px;
      font-family: var(--font-mono);
      font-size: 0.75rem;
      text-transform: uppercase;
      letter-spacing: 0.15em;
      color: #f3e5ab;
      margin-bottom: 20px;
    }

    .hero-headline {
      font-size: clamp(1.5rem, 3.5vw, 2.25rem);
      font-weight: 800;
      line-height: 1.1;
      letter-spacing: -0.02em;
      text-transform: uppercase;
      color: #ffffff;
      margin-bottom: 12px;
      text-shadow: 0 4px 20px rgba(0, 0, 0, 0.8);
    }

    .hero-subline {
      font-size: clamp(0.9rem, 1.5vw, 1.05rem);
      line-height: 1.5;
      color: #ffffff;
      max-width: 500px;
      margin: 0;
      text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
    }

    .ecosystem-section {
      padding: 100px 0 80px 0;
      text-align: center;
      scroll-margin-top: 40px;
    }

    .ecosystem-header-tag {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--accent-gold);
      letter-spacing: 0.2em;
      text-transform: uppercase;
      margin-bottom: 12px;
      display: block;
    }

    .ecosystem-title {
      font-size: 2.2rem;
      font-weight: 800;
      letter-spacing: -0.01em;
      margin-bottom: 20px;
      text-transform: uppercase;
    }

    .ecosystem-desc {
      font-size: 1.1rem;
      color: var(--text-muted);
      max-width: 720px;
      margin: 0 auto 48px auto;
      line-height: 1.6;
    }

    .storefront-grid {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 24px;
      flex-wrap: wrap;
      margin-top: 32px;
    }

    .storefront-card {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 16px 24px;
      transition: all 0.2s ease;
    }

    .storefront-card:hover {
      border-color: var(--border-accent);
      transform: translateY(-4px);
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.05);
    }

    .storefront-card img {
      max-height: 28px;
      width: auto;
    }

    .complete-work-section {
      padding: 90px 0;
      scroll-margin-top: 40px;
    }

    .complete-work-header {
      text-align: center;
      margin-bottom: 48px;
    }

    .complete-work-title {
      font-size: 1.75rem;
      font-weight: 800;
      margin-bottom: 12px;
      text-transform: uppercase;
    }

    .complete-work-desc {
      font-size: 1rem;
      color: var(--text-muted);
      max-width: 640px;
      margin: 0 auto;
    }

    .channels-dual-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
      margin-bottom: 48px;
    }

    .channel-box {
      border-radius: 20px;
      padding: 40px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
      position: relative;
      overflow: hidden;
      min-height: 320px;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }

    .channel-box-vocal {
      background: linear-gradient(180deg, rgba(0, 0, 0, 0.45) 0%, rgba(0, 0, 0, 0.85) 100%), 
                  url('../assets/images/cover-art/instrumental-cover-art.jpg') center/cover no-repeat;
    }

    .channel-box-instrumental {
      background: linear-gradient(180deg, rgba(0, 0, 0, 0.45) 0%, rgba(0, 0, 0, 0.85) 100%), 
                  url('../assets/images/cover-art/instrumental-cover-art.jpg') center/cover no-repeat;
    }

    .channel-box:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    }

    .channel-box-tag {
      font-size: 0.8rem;
      font-weight: 600;
      color: rgba(255, 255, 255, 0.7);
      letter-spacing: 0.05em;
      text-transform: uppercase;
      margin-bottom: 12px;
      display: block;
    }

    .channel-box-title {
      font-size: 1.8rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: #ffffff;
      margin-bottom: 12px;
      line-height: 1.2;
      text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    }

    .channel-box-desc {
      font-size: 1rem;
      color: rgba(255, 255, 255, 0.85);
      line-height: 1.5;
      margin-bottom: 32px;
      text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
    }

    .song-credits-block {
      margin-top: auto;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.2);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

    .song-details {
      display: flex;
      flex-direction: column;
    }

    .song-credit-label {
      font-size: 0.7rem;
      font-weight: 600;
      color: rgba(255, 255, 255, 0.6);
      letter-spacing: 0.08em;
      text-transform: uppercase;
      margin-bottom: 4px;
    }

    .song-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: #ffffff;
      letter-spacing: -0.01em;
    }

    .artist-name {
      font-size: 0.9rem;
      color: rgba(255, 255, 255, 0.75);
      font-weight: 500;
      margin-top: 2px;
    }

    .audio-play-btn {
      background: #ffffff;
      color: var(--text-main);
      border: none;
      border-radius: 999px;
      width: 48px;
      height: 48px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      flex-shrink: 0;
      transition: background-color 0.2s ease, transform 0.2s ease;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }

    .audio-play-btn:hover {
      background: var(--apple-blue);
      color: #ffffff;
      transform: scale(1.05);
    }

    .audio-play-btn svg {
      width: 18px;
      height: 18px;
      fill: currentColor;
    }

    .distribution-label {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--text-muted);
      letter-spacing: 0.15em;
      text-transform: uppercase;
      margin-bottom: 24px;
      text-align: center;
    }

    .distribution-container {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 20px;
      flex-wrap: wrap;
    }

    .platform-link {
      padding: 12px 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: border-color 0.2s ease;
    }

    .platform-link:hover {
      border-color: var(--border-accent);
    }

    .platform-link img {
      max-height: 22px;
      width: auto;
    }

    .act-03-section {
      padding: 80px 0 40px 0;
      text-align: center;
    }

    .closing-summary {
      font-family: var(--font-sans);
      font-size: clamp(1.8rem, 4vw, 3rem);
      font-weight: 900;
      letter-spacing: 0.05em;
      color: var(--text-main);
      text-transform: uppercase;
      line-height: 1.1;
    }

    .closing-subkicker {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--text-muted);
      letter-spacing: 0.2em;
      text-transform: uppercase;
      margin-top: 16px;
    }

    .architectural-footer {
      padding: 60px 0 20px 0;
      text-align: center;
    }

    .footer-wordmark {
      font-family: var(--font-sans);
      font-weight: 900;
      font-size: clamp(3rem, 11vw, 11rem);
      line-height: 0.85;
      letter-spacing: -0.04em;
      width: 100%;
      text-transform: uppercase;
      user-select: none;
      margin-bottom: 2rem;
      color: var(--text-main);
      -webkit-mask-image: linear-gradient(180deg, #000 30%, rgba(0, 0, 0, 0) 100%);
      mask-image: linear-gradient(180deg, #000 30%, rgba(0, 0, 0, 0) 100%);
    }

    .footer-kicker {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--accent-gold);
      letter-spacing: 0.15em;
      text-transform: uppercase;
      margin-bottom: 32px;
    }

    .footer-links {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 24px;
      list-style: none;
      margin-bottom: 40px;
    }

    .footer-link {
      color: var(--text-muted);
      font-size: 0.85rem;
      transition: color 0.2s ease;
    }

    .footer-link:hover {
      color: var(--text-main);
    }

    .footer-link img {
      max-height: 20px;
      width: auto;
      vertical-align: middle;
    }

    .footer-copy {
      font-family: var(--font-mono);
      font-size: 0.7rem;
      color: var(--text-muted);
      letter-spacing: 0.05em;
    }

    .back-to-top {
      position: fixed;
      bottom: 24px;
      right: 24px;
      z-index: 1000;
      background: var(--panel-bg);
      border: 1px solid var(--border-color);
      border-radius: 999px;
      padding: 10px 18px;
      font-family: var(--font-mono);
      font-size: 0.75rem;
      letter-spacing: 0.1em;
      color: var(--text-main);
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(0,0,0,0.08);
      opacity: 0;
      transform: translateY(20px);
      transition: all 0.3s ease;
      pointer-events: none;
    }

    .back-to-top.visible {
      opacity: 1;
      transform: translateY(0);
      pointer-events: auto;
    }

    .back-to-top:hover {
      border-color: var(--border-accent);
      background: #f0f0f0;
    }

    /* Mobile Responsive Logic */
    @media (max-width: 900px) {
      .app-layout {
        flex-direction: column;
      }

      .sticky-sidebar {
        position: sticky;
        top: 0;
        width: 100%;
        height: auto;
        flex-direction: column;
        justify-content: flex-start;
        padding: 16px 24px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
      }

      .sidebar-top-group {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        width: 100%;
      }

      .sidebar-brand {
        margin-bottom: 0;
        width: auto;
      }

      .sidebar-brand-logo {
        height: 24px;
      }

      .mobile-menu-toggle {
        display: block;
      }

      .mobile-nav-content {
        display: none;
        flex-direction: column;
        align-items: center;
        width: 100%;
        padding-top: 24px;
        gap: 32px;
      }

      .sticky-sidebar.nav-open .mobile-nav-content {
        display: flex;
      }

      .campaign-tabs {
        flex-direction: column;
        gap: 28px;
        width: 100%;
        margin: 0;
      }

      .tab-btn {
        width: 100%;
        padding: 8px 0;
      }

      .tab-btn .tab-img {
        max-width: 140px;
        max-height: 40px;
      }

      .sidebar-actions {
        flex-direction: column;
        gap: 16px;
        margin-top: 0;
        padding-top: 20px;
        border-top: 1px solid var(--border-color);
        border-left: none;
        padding-left: 0;
        width: 100%;
      }

      .sidebar-action {
        font-size: 0.75rem;
      }

      .sidebar-footer-link {
        display: none;
      }

      .main-content {
        max-width: 100%;
        padding: 0 24px;
      }

      .hero-section {
        padding-top: 60px;
        padding-bottom: 40px;
      }

      .card-wrapper {
        height: 420px;
        top: 80px;
      }

      .channels-dual-grid {
        grid-template-columns: 1fr;
      }

      .video-overlay-content {
        padding: 0 0 24px 24px;
      }
    }