/* === BASE STYLES === */
    html { scroll-behavior: smooth; }

    :root {
      --color-bg-primary: #0a0f1e;
      --color-bg-secondary: #0d1528;
      --color-bg-card: #111827;
      --color-bg-card-hover: #162035;
      --color-accent: #00d4ff;
      --color-accent-glow: rgba(0, 212, 255, 0.3);
      --color-accent-2: #0066ff;
      --color-accent-3: #00ffaa;
      --color-text-primary: #f0f6ff;
      --color-text-secondary: #8ba3c7;
      --color-text-muted: #4a6080;
      --color-border: rgba(0, 212, 255, 0.15);
      --color-border-strong: rgba(0, 212, 255, 0.4);
      --color-surface: rgba(255,255,255,0.03);
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0,212,255,0.08);
      --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.2);
      --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.7), 0 0 40px rgba(0,212,255,0.25);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-xl: 32px;
      --font-primary: 'Segoe UI', system-ui, -apple-system, sans-serif;
      --transition-fast: 0.2s ease;
      --transition-main: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html, body {
      overflow-x: hidden;
      max-width: 100vw;
    }

    body {
      font-family: var(--font-primary);
      background-color: var(--color-bg-primary);
      color: var(--color-text-primary);
      line-height: 1.7;
      font-size: 16px;
    }

    .wrapper {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-family: var(--font-primary);
      font-weight: 700;
      font-size: 15px;
      letter-spacing: 0.5px;
      text-decoration: none;
      border: none;
      cursor: pointer;
      transition: var(--transition-main);
      white-space: nowrap;
      position: relative;
      overflow: hidden;
    }

    .btn::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
      opacity: 0;
      transition: var(--transition-fast);
    }

    .btn:hover::before { opacity: 1; }

    .btn--primary {
      background: linear-gradient(135deg, #00d4ff 0%, #0066ff 100%);
      color: #ffffff;
      border-radius: var(--radius-sm);
      padding: 12px 28px;
      box-shadow: 0 4px 20px rgba(0,212,255,0.35), 0 0 0 0 rgba(0,212,255,0.4);
    }

    .btn--primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 32px rgba(0,212,255,0.5), 0 0 0 4px rgba(0,212,255,0.15);
      color: #ffffff;
    }

    .btn--primary:active { transform: translateY(0); }

    .btn--secondary {
      background: transparent;
      color: var(--color-accent);
      border: 2px solid var(--color-border-strong);
      border-radius: var(--radius-sm);
      padding: 10px 24px;
    }

    .btn--secondary:hover {
      background: rgba(0,212,255,0.1);
      border-color: var(--color-accent);
      transform: translateY(-2px);
      color: var(--color-accent);
    }

    .btn--large {
      font-size: 18px;
      padding: 16px 48px;
      border-radius: var(--radius-md);
    }

    /* Cards */
    .card {
      background: var(--color-bg-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-card);
      transition: var(--transition-main);
    }

    .card:hover {
      transform: translateY(-4px);
      border-color: var(--color-border-strong);
      box-shadow: var(--shadow-hover);
    }

    /* Section titles */
    .section__title {
      font-size: clamp(28px, 4vw, 48px);
      font-weight: 800;
      line-height: 1.2;
      color: var(--color-text-primary);
      margin-bottom: 16px;
    }

    .section__title span {
      background: linear-gradient(135deg, #00d4ff, #0066ff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .section__subtitle {
      font-size: 17px;
      color: var(--color-text-secondary);
      margin-bottom: 48px;
      max-width: 640px;
    }

    /* Image handling */
    .content-image {
      margin: 32px 0;
      border-radius: var(--radius-md);
      overflow: hidden;
    }

    .content-image img {
      width: 100%;
      height: auto;
      display: block;
      border-radius: var(--radius-md);
    }

    figcaption {
      font-size: 13px;
      color: var(--color-text-muted);
      text-align: center;
      margin-top: 8px;
    }

    /* Table responsive */
    .table-responsive {
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
      border-radius: var(--radius-md);
      border: 1px solid var(--color-border);
    }

    /* Highlight box */
    .highlight-box--note {
      background: rgba(0,212,255,0.06);
      border: 1px solid rgba(0,212,255,0.2);
      border-left: 4px solid var(--color-accent);
      border-radius: var(--radius-sm);
      padding: 20px 24px;
      color: var(--color-text-secondary);
      font-size: 15px;
    }

    /* Divider */
    .section-divider {
      width: 60px;
      height: 4px;
      background: linear-gradient(90deg, #00d4ff, #0066ff);
      border-radius: 2px;
      margin-bottom: 32px;
    }

    /* === LAYOUT STYLES === */
    /* Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 15, 30, 0.95);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--color-border);
      box-shadow: 0 4px 24px rgba(0,0,0,0.4);
    }

    .site-header .wrapper { padding: 0 20px; }

    .header__inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      min-height: 72px;
    }

    .logo { flex-shrink: 0; }

    /* Hamburger */
    .hamburger {
      display: none;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: 5px;
      width: 44px;
      height: 44px;
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      cursor: pointer;
      padding: 8px;
      transition: var(--transition-fast);
      flex-shrink: 0;
    }

    .hamburger:hover {
      background: rgba(0,212,255,0.1);
      border-color: var(--color-border-strong);
    }

    .hamburger span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--color-accent);
      border-radius: 2px;
      transition: var(--transition-main);
    }

    .hamburger.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .hamburger.is-active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
    .hamburger.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    /* Nav */
    .main-nav { display: flex; align-items: center; }

    .nav-list {
      display: flex;
      align-items: center;
      gap: 8px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .nav-link {
      display: block;
      padding: 8px 16px;
      color: var(--color-text-secondary);
      text-decoration: none;
      font-weight: 600;
      font-size: 15px;
      border-radius: var(--radius-sm);
      transition: var(--transition-fast);
    }

    .nav-link:hover {
      color: var(--color-accent);
      background: rgba(0,212,255,0.08);
    }

    .header__cta {
      flex-shrink: 0;
    }

    /* Footer */
    .site-footer {
      background: var(--color-bg-secondary);
      border-top: 1px solid var(--color-border);
      padding: 48px 0 32px;
      margin-top: 0;
    }

    .footer__inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 24px;
      text-align: center;
    }

    .footer__logo {
      font-size: 28px;
      font-weight: 900;
      background: linear-gradient(135deg, #00d4ff, #0066ff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: -1px;
    }

    .footer-nav-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px 24px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .footer-nav-list a {
      color: var(--color-text-secondary);
      text-decoration: none;
      font-size: 14px;
      transition: var(--transition-fast);
    }

    .footer-nav-list a:hover { color: var(--color-accent); }

    .footer__disclaimer {
      font-size: 13px;
      color: var(--color-text-muted);
      max-width: 600px;
      line-height: 1.6;
    }

    /* Media queries for header/footer */
    @media (max-width: 767px) {
      .hamburger { display: flex; }

      .main-nav {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(10,15,30,0.98);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--color-border);
        padding: 16px 20px 20px;
        display: none;
        z-index: 999;
      }

      .main-nav.is-open { display: flex; }

      .nav-list {
        flex-direction: column;
        width: 100%;
        gap: 4px;
      }

      .nav-link {
        display: block;
        width: 100%;
        padding: 12px 16px;
        font-size: 16px;
      }

      .header__inner { position: relative; }

      .header__cta .btn--primary {
        font-size: 13px;
        padding: 10px 16px;
        max-width: 200px;
        overflow: hidden;
        text-overflow: ellipsis;
      }
    }

    @media (min-width: 768px) {
      .hamburger { display: none; }
      .main-nav { display: flex; }
    }

@media (max-width: 767px) {
      .hamburger { display: flex; }

      .main-nav {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(10,15,30,0.98);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--color-border);
        padding: 16px 20px 20px;
        display: none;
        z-index: 999;
      }

      .main-nav.is-open { display: flex; }

      .nav-list {
        flex-direction: column;
        width: 100%;
        gap: 4px;
      }

      .nav-link {
        display: block;
        width: 100%;
        padding: 12px 16px;
        font-size: 16px;
      }

      .header__inner { position: relative; }

      .header__cta .btn--primary {
        font-size: 13px;
        padding: 10px 16px;
        max-width: 200px;
        overflow: hidden;
        text-overflow: ellipsis;
      }
    }

@media (min-width: 768px) {
      .hamburger { display: none; }
      .main-nav { display: flex; }
    }