:root {
      --bg: #050505;
      --bg-soft: #0b0b0b;
      --card: #050505;
      --accent: #ffffff;
      --accent-soft: #e5e5e5;
      --accent-strong: #ffffff;
      --text-main: #f5f5f5;
      --text-soft: #d4d4d4;
      --text-muted: #ffffff;
      --border-subtle: #262626;
      --shadow-soft: 0 18px 40px rgba(0,0,0,0.9);
      --radius-lg: 18px;
      --radius-xl: 26px;
      --radius-full: 999px;
      --grad-main: linear-gradient(135deg,#000000,#111111);
      --grad-pill: linear-gradient(135deg,#f5f5f5,#ffffff);
      --grad-section: radial-gradient(circle at top,#050505,#000000 55%);
      --font-main: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
    }

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

    body {
      font-family: var(--font-main);
      background: #000000;
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

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

    .page-wrap {
      min-height: 100vh;
      background: linear-gradient(to bottom, #fafafa 0%, #ffffff 100%);
      color: var(--text-main);
    }

    header {
      position: sticky;
      top: 0;
      z-index: 50;
      backdrop-filter: blur(18px);
      background: linear-gradient(to bottom,rgba(0,0,0,0.96),rgba(0,0,0,0.7),transparent);
      border-bottom: 1px solid #262626;
    }

    .nav-inner {
      max-width: 1080px;
      margin: 0 auto;
      padding: 14px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .brand-mark {
      width: 32px;
      height: 32px;
      border-radius: 30%;
      background: #ffffff;
      position: relative;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 4px;
      border-radius: inherit;
      background: #000000;
    }

    .brand-text-main {
      font-size: 1.05rem;
      font-weight: 650;
      letter-spacing: 0.03em;
    }

    .brand-text-sub {
      font-size: 0.75rem;
      color: var(--text-soft);
      letter-spacing: 0.12em;
      text-transform: uppercase;
    }

    .nav-links {
      display: flex;
      gap: 24px;
      font-size: 0.86rem;
      color: var(--text-soft);
    }

    .nav-links a {
      position: relative;
      padding-bottom: 4px;
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      height: 2px;
      width: 0;
      background: var(--accent-strong);
      border-radius: 999px;
      transition: width 160ms ease-out;
    }

    .nav-links a:hover::after {
      width: 100%;
    }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .nav-pill {
      padding: 6px 14px;
      border-radius: 999px;
      font-size: 0.78rem;
      text-transform: uppercase;
      letter-spacing: 0.13em;
      border: 1px solid #404040;
      color: var(--text-soft);
      background: #000000;
    }

    .nav-button {
      padding: 7px 18px;
      border-radius: 999px;
      border: none;
      font-size: 0.8rem;
      text-transform: uppercase;
      letter-spacing: 0.14em;
      background: var(--grad-pill);
      color: #000000;
      font-weight: 600;
      cursor: pointer;
      box-shadow: 0 0 0 1px #171717, 0 14px 25px rgba(0,0,0,0.8);
    }

    .nav-button:hover {
      filter: brightness(0.9);
      transform: translateY(-1px);
    }

    @media (max-width: 720px) {
      .nav-inner {
        padding-inline: 16px;
      }
      .nav-links {
        display: none;
      }
      .nav-cta {
        display: none;
      }
      .brand-text-main {
        font-size: 0.95rem;
      }
      .brand-text-sub {
        font-size: 0.68rem;
      }
    }

    main {
      margin: 0 auto;
      padding: 32px 18px 64px;
    }

    .topsection {
      /* max-width: 780px; */
      margin: 80px auto 28px auto;
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 3px 10px 3px 3px;
      border-radius: 999px;
      /* background: #000000;
      border: 1px solid #404040; */
      margin-bottom: 14px;
    }
            .topsection {
  align-items: flex-start;
  text-align: left;
}

/* Keep title & subtitle visually centered if needed */
.hero-title,
.hero-subtitle,
.hero-badges,.hero-footnote {
  align-self: center;
  text-align: center;
}
   
    .hero-k-dot {
      width: 18px;
      height: 18px;
      border-radius: 999px;
      background: #ffffff;
    }

    .hero-k-label {
      font-size: 0.90rem;
      text-transform: uppercase;
      letter-spacing: 0.16em;
      color: #000000;
      font-weight: 700;


    }

    .hero-title {
      font-size: clamp(2.1rem,2.7vw,2.6rem);
      line-height: 1.15;
      letter-spacing: -0.03em;
      margin-bottom: 14px;
      color: #101010;
    }

    .hero-title span.accent {
      color: #000000;
      text-decoration: underline;
      text-decoration-thickness: 2px;
      text-underline-offset: 4px;
    }

    .hero-subtitle {
      font-size: 1rem;
      color: #000000;
      margin-bottom: 18px;
    }

    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-bottom: 18px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 7px 14px;
      border-radius: 999px;
      background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
      border: 1px solid #333333;
      font-size: 0.8rem;
      color: #f5f5f5;
      box-shadow: 0 4px 12px rgba(0,0,0,0.3);
      transition: all 0.2s ease;
    }
    
    .hero-badge:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(0,0,0,0.4);
    }

    .hero-badge-dot {
      width: 7px;
      height: 7px;
      border-radius: 999px;
      background: #ffffff;
    }

    .hero-cta-row {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
      align-items: center;
      margin-bottom: 16px;
    }

    .hero-cta-primary {
      padding: 11px 22px;
      border-radius: 999px;
      border: none;
      background: var(--grad-pill);
      color: #000000;
      font-size: 0.9rem;
      font-weight: 600;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      cursor: pointer;
      box-shadow: 0 16px 35px rgba(0,0,0,0.9);
    }

    .hero-cta-primary:hover {
      filter: brightness(0.9);
      transform: translateY(-1px);
    }

    .hero-footnote {
      font-size: 0.77rem;
      color: #000000;
    }

    .hero-footnote strong {
      color: #000000;
    }

    .layout-main {
      display: grid;
      grid-template-columns: minmax(0,3fr) minmax(0,1fr);
      gap: 28px;
      margin-top: 24px;
    }

    @media (max-width: 920px) {
      .layout-main {
        grid-template-columns: minmax(0,1fr);
      }
    }

    .content-flow {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    section {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
      border: 1px solid #2a2a2a;
      box-shadow: 0 8px 32px rgba(0,0,0,0.4);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    
    section:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 40px rgba(0,0,0,0.5);
    }

    section.compact {
      padding-block: 14px;
    }

    section.alt {
      background: linear-gradient(135deg, #0a0a0a 0%, #1f1f1f 100%);
      border: 1px solid #333333;
    }

    .section-kicker {
      font-size: 0.75rem;
      text-transform: uppercase;
      letter-spacing: 0.18em;
      color: var(--text-muted);
      margin-bottom: 4px;
    }

    h2 {
      font-size: 1.22rem;
      margin-bottom: 6px;
      letter-spacing: -0.01em;
    }

    .section-intro {
      font-size: 0.92rem;
      color: var(--text-soft);
      margin-bottom: 10px;
    }

    p {
      font-size: 0.9rem;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    ul {
      list-style: disc;
      padding-left: 18px;
      margin-top: 4px;
      margin-bottom: 6px;
    }

    ul li {
      font-size: 0.9rem;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .pill-metric-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 8px;
    }

    .pill-metric {
      padding: 6px 12px;
      border-radius: 999px;
      background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
      border: 1px solid #333333;
      font-size: 0.76rem;
      color: var(--text-soft);
      transition: all 0.2s ease;
    }
    
    .pill-metric:hover {
      border-color: #505050;
      transform: translateY(-1px);
    }

    .result-metric-row {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-top: 8px;
    }

    .result-metric-card {
      flex: 1 1 150px;
      padding: 16px 14px;
      border-radius: 16px;
      background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
      border: 1px solid #2a2a2a;
      transition: all 0.3s ease;
      cursor: pointer;
    }
    
    .result-metric-card:hover {
      transform: translateY(-4px);
      border-color: #404040;
      box-shadow: 0 8px 24px rgba(255,255,255,0.1);
    }

    .result-metric-title {
      font-size: 0.78rem;
      text-transform: uppercase;
      letter-spacing: 0.18em;
      color: var(--text-muted);
      margin-bottom: 4px;
    }

    .result-metric-value {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 4px;
      background: linear-gradient(135deg, #ffffff 0%, #e0e0e0 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .result-metric-note {
      font-size: 0.82rem;
      color: var(--text-soft);
    }

    .sidebar {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .badge-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 6px;
    }

    .badge-chip {
      font-size: 0.74rem;
      padding: 4px 8px;
      border-radius: 999px;
      border: 1px solid #404040;
      color: var(--text-soft);
      background: #050505;
    }

    @media (max-width: 480px) {
      .hero-title {
        font-size: 1.8rem;
      }
      .hero-subtitle {
        font-size: 0.9rem;
      }
      .hero-badges {
        gap: 8px;
      }
      .hero-badge {
        font-size: 0.72rem;
        padding: 4px 8px;
      }
      main {
        padding: 24px 14px 48px;
      }
      section {
        padding: 14px;
      }
      .result-metric-row {
        gap: 12px;
      }
      .result-metric-card {
        flex: 1 1 100%;
      }
    }

            .table-of-contents {
            position: sticky;
            top: 100px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
            border: 1px solid #333333;
            box-shadow: var(--shadow-soft);
            padding: 20px 20px 18px;
            overflow: hidden;
            align-self: start;
            max-height: calc(100vh - 120px);
        }
        
        .toc-header {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 20px;
            color: #ffffff;
        }
        
        .toc-header h3 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #ffffff;
        }
        
        .toc-list {
            list-style: none;
        }
        
        .toc-list li {
            margin-bottom: 14px;
            padding-bottom: 14px;
            border-bottom: 1px solid #333333;
        }
        
        .toc-list li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        
        .toc-list a {
            text-decoration: none;
            color: #d1d5db;
            font-weight: 500;
            font-size: 0.875rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color 0.3s;
            line-height: 1.4;
        }
        
        .toc-list a:hover {
            color: #3b82f6;
        }
        
        .toc-list a.active {
            color: #3b82f6;
            font-weight: 600;
        }
        
        .toc-list i {
            color: #3b82f6;
            font-size: 0.75rem;
            flex-shrink: 0;
        }
        
           @media (max-width: 992px) {
            .case-study-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            
            .table-of-contents {
                position: static;
            }}