/* ============================================================
       CSS CUSTOM PROPERTIES (Design System)
       ============================================================ */
    :root {
      /* Colors Light */
      --bg-primary: #ffffff;
      --bg-secondary: #f8fafc;
      --bg-tertiary: #f1f5f9;
      --text-primary: #0f172a;
      --text-secondary: #475569;
      --text-tertiary: #94a3b8;
      --accent: #2563eb;
      --accent-hover: #1d4ed8;
      --accent-glow: rgba(37, 99, 235, 0.25);
      --success: #059669;
      --warning: #d97706;
      --danger: #dc2626;
      --border: 1px solid rgba(226, 232, 240, 0.8);
      --border-hover: 1px solid rgba(148, 163, 184, 0.6);
      --card-bg: rgba(255, 255, 255, 0.85);
      --card-bg-solid: #ffffff;
      --glass-bg: rgba(255, 255, 255, 0.72);
      --glass-border: 1px solid rgba(255, 255, 255, 0.3);
      --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
      --shadow: 0 4px 16px rgba(0,0,0,0.06);
      --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
      --shadow-xl: 0 24px 64px rgba(0,0,0,0.10);
      --shadow-glow: 0 0 30px var(--accent-glow);
      --radius-sm: 8px;
      --radius: 12px;
      --radius-lg: 20px;
      --radius-xl: 28px;
      --nav-height: 68px;
      --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
      --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
      --hero-gradient: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    }

    /* Dark Theme */
    [data-theme="dark"] {
      --bg-primary: #0b1120;
      --bg-secondary: #0f172a;
      --bg-tertiary: #1e293b;
      --text-primary: #f1f5f9;
      --text-secondary: #94a3b8;
      --text-tertiary: #64748b;
      --accent: #3b82f6;
      --accent-hover: #60a5fa;
      --accent-glow: rgba(59, 130, 246, 0.3);
      --border: 1px solid rgba(51, 65, 85, 0.6);
      --border-hover: 1px solid rgba(100, 116, 139, 0.5);
      --card-bg: rgba(30, 41, 59, 0.8);
      --card-bg-solid: #1e293b;
      --glass-bg: rgba(15, 23, 42, 0.75);
      --glass-border: 1px solid rgba(51, 65, 85, 0.4);
      --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
      --shadow: 0 4px 16px rgba(0,0,0,0.3);
      --shadow-lg: 0 12px 40px rgba(0,0,0,0.4);
      --shadow-xl: 0 24px 64px rgba(0,0,0,0.5);
      --hero-gradient: linear-gradient(135deg, #020617 0%, #0f172a 50%, #1e293b 100%);
    }

    /* ============================================================
       RESET & BASE
       ============================================================ */
    *, *::before, *::after {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      scroll-padding-top: var(--nav-height);
    }

    body {
      font-family: var(--font);
      background: var(--bg-primary);
      color: var(--text-primary);
      line-height: 1.6;
      font-size: 15px;
      font-weight: 400;
      overflow-x: hidden;
      transition: background var(--transition), color var(--transition);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    /* Reduced motion */
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }
      html { scroll-behavior: auto; }
    }

    /* ============================================================
       SCROLL PROGRESS BAR
       ============================================================ */
    #scrollProgress {
      position: fixed;
      top: 0;
      left: 0;
      width: 0%;
      height: 3px;
      background: linear-gradient(90deg, var(--accent), #6366f1, #8b5cf6);
      z-index: 9999;
      transition: width 0.1s linear;
      box-shadow: 0 0 10px var(--accent-glow);
    }

    /* ============================================================
       BACK TO TOP — LEFT BOTTOM
       ============================================================ */
    .back-to-top {
      position: fixed;
      bottom: 24px;
      left: 24px;
      z-index: 9997;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--accent);
      color: white;
      border: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      opacity: 0;
      visibility: hidden;
      transform: translateY(20px) scale(0.8);
      transition: all var(--transition);
      box-shadow: 0 4px 16px rgba(37, 99, 235, 0.4);
    }

    .back-to-top.visible {
      opacity: 1;
      visibility: visible;
      transform: translateY(0) scale(1);
    }

    .back-to-top:hover {
      transform: translateY(-3px) scale(1.05);
      box-shadow: 0 8px 24px rgba(37, 99, 235, 0.5);
    }

    @media (max-width: 600px) {
      .back-to-top {
        left: 16px;
        bottom: 16px;
        width: 40px;
        height: 40px;
        font-size: 1rem;
      }
    }

    /* ============================================================
       TYPOGRAPHY
       ============================================================ */
    h1, h2, h3, h4, h5 {
      color: var(--text-primary);
      font-weight: 700;
      line-height: 1.2;
    }

    h1 {
      font-size: clamp(2.5rem, 7vw, 4.2rem);
      letter-spacing: -0.03em;
      margin-bottom: 1rem;
    }

    h2 {
      font-size: clamp(1.6rem, 3.5vw, 2.4rem);
      letter-spacing: -0.02em;
      margin-bottom: 0.5rem;
    }

    h3 {
      font-size: 1.15rem;
      letter-spacing: -0.01em;
    }

    p {
      color: var(--text-secondary);
      font-size: 1rem;
      line-height: 1.7;
    }

    .text-gradient {
      background: linear-gradient(135deg, var(--accent), #6366f1, #8b5cf6);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .text-muted { color: var(--text-tertiary); }
    .text-sm { font-size: 0.875rem; }
    .text-xs { font-size: 0.75rem; }
    .fw-500 { font-weight: 500; }
    .fw-600 { font-weight: 600; }
    .fw-700 { font-weight: 700; }
    .fw-800 { font-weight: 800; }

    a {
      text-decoration: none;
      color: inherit;
      transition: color var(--transition);
    }

    img {
      max-width: 100%;
      height: auto;
    }

    /* ============================================================
       CONTAINER
       ============================================================ */
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
      position: relative;
    }

    @media (max-width: 600px) {
      .container { padding: 0 16px; }
    }

    /* ============================================================
       BUTTONS
       ============================================================ */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 14px 32px;
      background: var(--accent);
      color: #fff;
      font-weight: 600;
      font-size: 0.95rem;
      border: none;
      border-radius: var(--radius);
      cursor: pointer;
      transition: all var(--transition);
      white-space: nowrap;
      position: relative;
      overflow: hidden;
    }

    .btn::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
      opacity: 0;
      transition: opacity var(--transition);
    }

    .btn:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: var(--shadow-glow);
    }

    .btn:hover::after { opacity: 1; }
    .btn:active { transform: translateY(0) scale(0.98); }

    .btn i { transition: transform var(--transition); }
    .btn:hover i { transform: translateX(4px); }

    .btn-outline {
      background: transparent;
      color: var(--text-primary);
      border: var(--border);
    }

    .btn-outline:hover {
      background: var(--bg-tertiary);
      border-color: var(--accent);
      color: var(--accent);
      box-shadow: var(--shadow);
    }

    .btn-outline:hover i { transform: translateX(0); }

    .btn-ghost {
      background: transparent;
      color: var(--text-secondary);
      padding: 10px 20px;
    }

    .btn-ghost:hover {
      background: var(--bg-tertiary);
      color: var(--text-primary);
      transform: none;
      box-shadow: none;
    }

    .btn-sm {
      padding: 10px 22px;
      font-size: 0.85rem;
      border-radius: var(--radius-sm);
    }

    .btn-lg {
      padding: 18px 42px;
      font-size: 1.05rem;
    }

    .btn-group {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      align-items: center;
    }

    /* ============================================================
       BADGE
       ============================================================ */
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      background: var(--bg-tertiary);
      color: var(--text-secondary);
      font-size: 0.78rem;
      font-weight: 600;
      border-radius: 20px;
      border: var(--border);
      white-space: nowrap;
      transition: all var(--transition);
    }

    .badge-accent {
      background: var(--accent);
      color: #fff;
      border-color: var(--accent);
    }

    .badge-success {
      background: rgba(5, 150, 105, 0.12);
      color: var(--success);
      border-color: rgba(5, 150, 105, 0.2);
    }

    .badge-sm { padding: 4px 12px; font-size: 0.7rem; }

    /* ============================================================
       SECTION
       ============================================================ */
    section {
      padding: 96px 0;
      position: relative;
    }

    .section-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: var(--bg-tertiary);
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--text-tertiary);
      margin-bottom: 16px;
      border: var(--border);
    }

    .section-label i { color: var(--accent); }

    .section-header {
      margin-bottom: 48px;
    }

    .section-header p {
      max-width: 640px;
      margin-top: 8px;
    }

    @media (max-width: 768px) {
      section { padding: 64px 0; }
      .section-header { margin-bottom: 32px; }
    }

    /* ============================================================
       HEADER / NAVIGATION
       ============================================================ */
    header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      padding: 0;
      height: var(--nav-height);
      background: rgba(255, 255, 255, 0.75);
      backdrop-filter: blur(16px) saturate(180%);
      -webkit-backdrop-filter: blur(16px) saturate(180%);
      border-bottom: var(--border);
      transition: all var(--transition);
    }

    [data-theme="dark"] header {
      background: rgba(11, 17, 32, 0.8);
      border-bottom: 1px solid rgba(51, 65, 85, 0.4);
    }

    header.scrolled {
      box-shadow: 0 4px 24px rgba(0,0,0,0.06);
    }

    [data-theme="dark"] header.scrolled {
      box-shadow: 0 4px 24px rgba(0,0,0,0.3);
    }

    .header-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: var(--nav-height);
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--text-primary);
      letter-spacing: -0.02em;
    }

    .logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--accent), #6366f1);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1rem;
      box-shadow: 0 4px 12px var(--accent-glow);
    }

    .logo span { color: var(--text-primary); }

    /* Mobile toggle */
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-primary);
      cursor: pointer;
      padding: 8px;
      border-radius: 8px;
      transition: background var(--transition);
    }

    .mobile-toggle:hover { background: var(--bg-tertiary); }

    /* Nav links */
    .nav-links {
      display: flex;
      gap: 8px;
      font-weight: 500;
      align-items: center;
    }

    .nav-links a {
      color: var(--text-secondary);
      font-size: 0.9rem;
      padding: 8px 16px;
      border-radius: var(--radius-sm);
      transition: all var(--transition);
      position: relative;
    }

    .nav-links a:hover {
      color: var(--text-primary);
      background: var(--bg-tertiary);
    }

    .nav-links a.active {
      color: var(--accent);
      background: rgba(37, 99, 235, 0.08);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 22px;
      background: var(--accent) !important;
      color: #fff !important;
      font-weight: 700;
      font-size: 0.85rem;
      border-radius: var(--radius-sm) !important;
      transition: all var(--transition) !important;
      margin-left: 8px;
    }

    .nav-cta:hover {
      background: var(--accent-hover) !important;
      color: #fff !important;
      transform: translateY(-1px);
      box-shadow: var(--shadow-glow);
    }

    /* ============================================================
       THEME TOGGLE IN HEADER
       ============================================================ */
    .header-theme-toggle {
      background: none;
      border: none;
      color: var(--text-secondary);
      font-size: 1.1rem;
      cursor: pointer;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      transition: all var(--transition);
      margin-left: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .header-theme-toggle:hover {
      color: var(--accent);
      background: var(--bg-tertiary);
    }

    @media (max-width: 900px) {
      .mobile-toggle { display: flex; }

      .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--glass-bg);
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        flex-direction: column;
        padding: 24px;
        gap: 4px;
        border-bottom: var(--border);
        transform: translateY(-120%);
        opacity: 0;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        pointer-events: none;
        max-height: calc(100vh - var(--nav-height));
        overflow-y: auto;
      }

      .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
      }

      .nav-links a {
        padding: 14px 20px;
        font-size: 1rem;
        width: 100%;
        border-radius: var(--radius-sm);
      }

      .nav-cta {
        margin-left: 0;
        margin-top: 8px;
        justify-content: center;
        width: 100%;
        padding: 14px 22px;
      }

      .header-theme-toggle {
        margin-left: 0;
        align-self: flex-start;
        padding: 14px 20px;
        width: 100%;
        text-align: left;
        font-size: 1rem;
        border-radius: var(--radius-sm);
        justify-content: flex-start;
        gap: 10px;
      }
    }

    /* ============================================================
       HERO
       ============================================================ */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      padding-top: var(--nav-height);
      position: relative;
      overflow: hidden;
      background: var(--hero-gradient);
    }

    [data-theme="dark"] .hero {
      background: var(--hero-gradient);
    }

    /* Animated background grid */
    .hero-grid {
      position: absolute;
      inset: 0;
      background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
      background-size: 60px 60px;
      z-index: 0;
      mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
      -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    }

    /* Floating particles */
    .particles {
      position: absolute;
      inset: 0;
      z-index: 1;
      overflow: hidden;
      pointer-events: none;
    }

    .particle {
      position: absolute;
      width: 4px;
      height: 4px;
      background: rgba(59, 130, 246, 0.5);
      border-radius: 50%;
      animation: float-particle 20s infinite linear;
    }

    @keyframes float-particle {
      0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
      10% { opacity: 1; }
      90% { opacity: 1; }
      100% { transform: translateY(-100vh) rotate(720deg); opacity: 0; }
    }

    /* Hero glow orbs */
    .hero-orb {
      position: absolute;
      border-radius: 50%;
      filter: blur(80px);
      z-index: 0;
      pointer-events: none;
    }

    .hero-orb-1 {
      width: 600px;
      height: 600px;
      background: rgba(37, 99, 235, 0.15);
      top: -200px;
      right: -200px;
      animation: orb-float 8s ease-in-out infinite alternate;
    }

    .hero-orb-2 {
      width: 400px;
      height: 400px;
      background: rgba(99, 102, 241, 0.1);
      bottom: -100px;
      left: -100px;
      animation: orb-float 10s ease-in-out infinite alternate-reverse;
    }

    @keyframes orb-float {
      0% { transform: translate(0, 0) scale(1); }
      100% { transform: translate(60px, -40px) scale(1.1); }
    }

    .hero-content {
      position: relative;
      z-index: 10;
      max-width: 900px;
      margin: 0 auto;
      text-align: center;
      padding: 40px 0 60px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 20px;
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 30px;
      font-weight: 500;
      font-size: 0.82rem;
      color: rgba(255,255,255,0.7);
      margin-bottom: 32px;
      backdrop-filter: blur(8px);
    }

    .hero-badge i { color: var(--accent); }
    .hero-badge strong { color: #fff; font-weight: 700; }

    .hero h1 {
      color: #fff;
      margin-bottom: 24px;
    }

    .hero h1 .highlight {
      background: linear-gradient(135deg, #3b82f6, #818cf8, #a78bfa);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-typing {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 28px;
      min-height: 2.4rem;
    }

    .hero-typing .static {
      color: rgba(255,255,255,0.6);
      font-size: clamp(1.1rem, 3vw, 1.5rem);
      font-weight: 400;
    }

    .hero-typing .dynamic {
      color: #60a5fa;
      font-size: clamp(1.1rem, 3vw, 1.5rem);
      font-weight: 600;
      position: relative;
      display: inline-flex;
      align-items: center;
    }

    .hero-typing .dynamic::after {
      content: '';
      display: inline-block;
      width: 3px;
      height: 1.3em;
      background: #60a5fa;
      margin-left: 4px;
      animation: cursor-blink 1s step-end infinite;
    }

    @keyframes cursor-blink {
      0%, 100% { opacity: 1; }
      50% { opacity: 0; }
    }

    .hero-desc {
      color: rgba(255,255,255,0.6);
      font-size: clamp(1rem, 2vw, 1.15rem);
      max-width: 680px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

    .hero-desc .accent-underline {
      border-bottom: 2px dashed rgba(59, 130, 246, 0.5);
      cursor: help;
      font-weight: 500;
      color: rgba(255,255,255,0.85);
      transition: border-color var(--transition);
    }

    .hero-desc .accent-underline:hover {
      border-color: var(--accent);
    }

    .hero-stats {
      display: flex;
      justify-content: center;
      gap: 48px;
      margin-top: 56px;
      padding-top: 40px;
      border-top: 1px solid rgba(255,255,255,0.06);
      flex-wrap: wrap;
    }

    .hero-stat {
      text-align: center;
    }

    .hero-stat-number {
      font-size: 2.4rem;
      font-weight: 800;
      color: #fff;
      line-height: 1;
      letter-spacing: -0.02em;
    }

    .hero-stat-label {
      font-size: 0.82rem;
      color: rgba(255,255,255,0.5);
      font-weight: 500;
      margin-top: 6px;
    }

    @media (max-width: 768px) {
      .hero { min-height: auto; padding: 100px 0 60px; }
      .hero-stats { gap: 28px; padding-top: 32px; margin-top: 40px; }
      .hero-stat-number { font-size: 1.8rem; }
    }

    /* ============================================================
       GLASS CARD
       ============================================================ */
    .glass-card {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: var(--glass-border);
      border-radius: var(--radius);
      transition: all var(--transition);
    }

    .glass-card:hover {
      box-shadow: var(--shadow-lg);
      border-color: var(--accent);
    }

    /* ============================================================
       SERVICES GRID
       ============================================================ */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 8px;
    }

    .service-card {
      position: relative;
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: var(--border);
      border-radius: var(--radius);
      padding: 28px;
      cursor: pointer;
      transition: all var(--bounce);
      display: flex;
      flex-direction: column;
      gap: 12px;
      overflow: hidden;
      perspective: 800px;
    }

    .service-card::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(37, 99, 235, 0.03), transparent 60%);
      opacity: 0;
      transition: opacity var(--transition);
      border-radius: inherit;
      pointer-events: none;
    }

    .service-card:hover {
      transform: translateY(-6px) scale(1.01);
      border-color: var(--accent);
      box-shadow: var(--shadow-xl);
    }

    .service-card:hover::before { opacity: 1; }

    .service-card:active {
      transform: translateY(-2px) scale(0.99);
    }

    .service-icon {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, var(--accent), rgba(37, 99, 235, 0.1));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-size: 1.2rem;
      transition: all var(--transition);
    }

    .service-card:hover .service-icon {
      background: var(--accent);
      color: #fff;
      transform: scale(1.05);
      box-shadow: 0 4px 16px var(--accent-glow);
    }

    .service-card h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-primary);
      margin: 0;
    }

    .service-card > p {
      font-size: 0.85rem;
      color: var(--text-tertiary);
      line-height: 1.5;
      flex: 1;
    }

    .service-features {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 6px;
      margin-top: 4px;
    }

    .service-features li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.82rem;
      color: var(--text-secondary);
    }

    .service-features i {
      color: var(--success);
      font-size: 0.6rem;
      width: 14px;
      text-align: center;
      flex-shrink: 0;
    }

    .service-price {
      display: inline-flex;
      align-items: center;
      align-self: flex-start;
      padding: 6px 14px;
      background: var(--bg-tertiary);
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--accent);
      border: var(--border);
      margin-top: 8px;
      transition: all var(--transition);
    }

    .service-card:hover .service-price {
      background: var(--accent);
      color: #fff;
      border-color: var(--accent);
    }

    /* Services grid responsive */
    @media (max-width: 1200px) {
      .services-grid { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 900px) {
      .services-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 560px) {
      .services-grid { grid-template-columns: 1fr; }
      .service-card { padding: 24px; }
    }

    /* ============================================================
       INFO BANNER (under services)
       ============================================================ */
    .info-banner {
      margin-top: 48px;
      padding: 32px 36px;
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: var(--border);
      border-radius: var(--radius);
      display: flex;
      align-items: center;
      gap: 24px;
      transition: all var(--transition);
    }

    .info-banner:hover {
      box-shadow: var(--shadow-lg);
      border-color: var(--accent);
    }

    .info-banner-icon {
      width: 56px;
      height: 56px;
      background: linear-gradient(135deg, var(--accent), rgba(37, 99, 235, 0.1));
      border-radius: var(--radius);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-size: 1.6rem;
      flex-shrink: 0;
    }

    .info-banner-content h4 {
      font-weight: 700;
      font-size: 1.05rem;
      margin-bottom: 4px;
    }

    .info-banner-content p {
      font-size: 0.9rem;
      color: var(--text-tertiary);
    }

    @media (max-width: 600px) {
      .info-banner { flex-direction: column; text-align: center; padding: 24px; }
    }

    /* ============================================================
       PORTFOLIO
       ============================================================ */
    .portfolio-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-top: 8px;
    }

    .portfolio-card {
      position: relative;
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      cursor: pointer;
      transition: all var(--bounce);
      display: flex;
      flex-direction: column;
      text-decoration: none;
      color: inherit;
    }

    .portfolio-card:hover {
      transform: translateY(-6px) scale(1.01);
      border-color: var(--accent);
      box-shadow: var(--shadow-xl);
    }

    .portfolio-thumb {
      width: 100%;
      height: 200px;
      background-size: cover;
      background-position: center;
      position: relative;
      overflow: hidden;
    }

    .portfolio-thumb::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, var(--bg-primary), transparent 60%);
      opacity: 0.6;
    }

    .portfolio-tag {
      position: absolute;
      top: 16px;
      left: 16px;
      z-index: 2;
      padding: 4px 12px;
      background: var(--accent);
      color: #fff;
      font-size: 0.65rem;
      font-weight: 700;
      letter-spacing: 0.05em;
      border-radius: 20px;
      text-transform: uppercase;
    }

    .portfolio-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .portfolio-body .title-row {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 8px;
    }

    .portfolio-body .title-row i {
      color: var(--accent);
      font-size: 1.2rem;
      width: 24px;
      text-align: center;
    }

    .portfolio-body .title-row h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-primary);
    }

    .portfolio-body p {
      font-size: 0.87rem;
      color: var(--text-tertiary);
      line-height: 1.55;
      margin-bottom: 16px;
      flex: 1;
    }

    .tech-stack {
      display: flex;
      gap: 6px;
      flex-wrap: wrap;
    }

    .tech-item {
      padding: 4px 10px;
      font-size: 0.68rem;
      font-weight: 500;
      background: var(--bg-tertiary);
      border: var(--border);
      border-radius: 6px;
      color: var(--text-tertiary);
    }

    @media (max-width: 768px) {
      .portfolio-grid { grid-template-columns: 1fr; }
      .portfolio-thumb { height: 160px; }
    }

    /* ============================================================
       COMPARISON (Code vs Builder)
       ============================================================ */
    .comparison-section {
      background: var(--bg-secondary);
    }

    .comparison-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-top: 8px;
    }

    .comparison-col {
      background: var(--card-bg-solid);
      border: var(--border);
      border-radius: var(--radius);
      padding: 36px;
      transition: all var(--transition);
    }

    .comparison-col:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-2px);
    }

    .comparison-col.code-col {
      border-top: 4px solid var(--accent);
    }

    .comparison-col.builder-col {
      border-top: 4px solid var(--text-tertiary);
    }

    .comparison-header {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 28px;
      padding-bottom: 20px;
      border-bottom: var(--border);
    }

    .comparison-header i {
      font-size: 2rem;
      width: 44px;
      text-align: center;
    }

    .code-col .comparison-header i { color: var(--accent); }
    .builder-col .comparison-header i { color: var(--text-tertiary); }

    .comparison-header h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin: 0;
    }

    .builder-col .comparison-header h3 { color: var(--text-tertiary); }

    .feature-diff-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .feature-diff-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
    }

    .feature-diff-icon {
      flex-shrink: 0;
      width: 22px;
      font-size: 1rem;
      margin-top: 2px;
    }

    .code-col .feature-diff-icon i { color: var(--success); }
    .builder-col .feature-diff-icon i { color: var(--text-tertiary); }

    .feature-diff-title {
      font-weight: 700;
      font-size: 0.9rem;
      color: var(--text-primary);
      margin-bottom: 2px;
    }

    .feature-diff-desc {
      font-size: 0.85rem;
      color: var(--text-tertiary);
      line-height: 1.5;
    }

    .code-advantage {
      margin-top: 24px;
      padding: 16px 20px;
      background: var(--bg-secondary);
      border-radius: var(--radius-sm);
      font-weight: 500;
      font-size: 0.9rem;
      color: var(--text-primary);
    }

    .code-advantage i { color: var(--accent); margin-right: 8px; }

    .builder-col .code-advantage {
      background: rgba(220, 38, 38, 0.05);
      color: var(--danger);
    }

    .builder-col .code-advantage i { color: var(--danger); }

    .cta-banner {
      margin-top: 48px;
      padding: 48px;
      background: var(--hero-gradient);
      border-radius: var(--radius-lg);
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .cta-banner::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 30% 50%, rgba(59,130,246,0.15), transparent 60%);
    }

    .cta-banner h3 {
      color: #fff;
      font-size: 1.8rem;
      margin-bottom: 12px;
      position: relative;
    }

    .cta-banner p {
      color: rgba(255,255,255,0.7);
      max-width: 650px;
      margin: 0 auto;
      position: relative;
    }

    .cta-banner .tags {
      display: flex;
      gap: 12px;
      justify-content: center;
      flex-wrap: wrap;
      margin-top: 24px;
      position: relative;
    }

    .cta-banner .tags span {
      padding: 8px 20px;
      border: 1px solid rgba(255,255,255,0.2);
      border-radius: 30px;
      color: rgba(255,255,255,0.8);
      font-weight: 500;
      font-size: 0.85rem;
    }

    @media (max-width: 768px) {
      .comparison-grid { grid-template-columns: 1fr; }
      .comparison-col { padding: 24px; }
      .cta-banner { padding: 32px 24px; }
      .cta-banner h3 { font-size: 1.4rem; }
    }

    /* ============================================================
       PROCESS
       ============================================================ */
    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 8px;
    }

    .process-step {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: var(--border);
      border-radius: var(--radius);
      padding: 28px;
      transition: all var(--transition);
      position: relative;
      overflow: hidden;
    }

    .process-step:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: var(--accent);
    }

    .step-number {
      font-size: 3rem;
      font-weight: 800;
      color: var(--accent);
      opacity: 0.12;
      line-height: 1;
      margin-bottom: 8px;
      letter-spacing: -0.04em;
    }

    .process-step .title-row {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
    }

    .process-step .title-row i {
      color: var(--accent);
      font-size: 1.1rem;
      width: 22px;
      text-align: center;
    }

    .process-step .title-row h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-primary);
    }

    .process-step p {
      font-size: 0.87rem;
      color: var(--text-tertiary);
      line-height: 1.55;
    }

    @media (max-width: 1024px) {
      .process-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 560px) {
      .process-grid { grid-template-columns: 1fr; }
    }

    /* ============================================================
       PAYMENT BLOCK
       ============================================================ */
    .payment-block {
      margin-top: 32px;
      padding: 36px;
      background: var(--card-bg-solid);
      border: var(--border);
      border-radius: var(--radius);
      transition: all var(--transition);
    }

    .payment-block:hover {
      box-shadow: var(--shadow-lg);
      border-color: var(--accent);
    }

    .payment-block .title-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }

    .payment-block .title-row i {
      color: var(--accent);
      font-size: 1.5rem;
      width: 32px;
      text-align: center;
    }

    .payment-block .title-row h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-primary);
    }

    .payment-features {
      display: flex;
      gap: 24px;
      flex-wrap: wrap;
      margin-top: 20px;
    }

    .payment-features span {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.9rem;
      color: var(--text-secondary);
    }

    .payment-features i {
      color: var(--success);
      font-size: 0.85rem;
    }

    @media (max-width: 600px) {
      .payment-block { padding: 24px; }
    }

    /* ============================================================
       CONTACTS
       ============================================================ */
    .contacts-block {
      background: var(--card-bg-solid);
      border: var(--border);
      border-radius: var(--radius-lg);
      padding: 56px;
      text-align: center;
      transition: all var(--transition);
    }

    .contacts-block:hover {
      box-shadow: var(--shadow-lg);
    }

    .contacts-block .title-row {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
      margin-bottom: 16px;
    }

    .contacts-block .title-row i {
      font-size: 2rem;
      color: #0077FF;
    }

    .contacts-block h2 {
      font-size: 1.8rem;
    }

    .contacts-block > p {
      max-width: 560px;
      margin: 0 auto 32px;
      color: var(--text-tertiary);
    }

    .contacts-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 24px;
      flex-wrap: wrap;
    }

    .contacts-actions a.vk-link {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.2rem;
      font-weight: 600;
      color: var(--text-primary);
      padding: 12px 24px;
      border-radius: var(--radius);
      border: var(--border);
      transition: all var(--transition);
    }

    .contacts-actions a.vk-link:hover {
      border-color: #0077FF;
      color: #0077FF;
      background: rgba(0, 119, 255, 0.04);
      transform: translateY(-2px);
      box-shadow: var(--shadow);
    }

    .contacts-actions a.vk-link i {
      font-size: 1.8rem;
      color: #0077FF;
    }

    .contacts-divider {
      margin: 36px auto 16px;
      max-width: 200px;
      border: none;
      border-top: var(--border);
    }

    @media (max-width: 600px) {
      .contacts-block { padding: 32px 24px; }
      .contacts-block h2 { font-size: 1.4rem; }
      .contacts-actions a.vk-link { width: 100%; justify-content: center; }
    }

    /* ============================================================
       FOOTER
       ============================================================ */
    footer {
      background: var(--bg-secondary);
      padding: 48px 0 32px;
      border-top: var(--border);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 32px;
      align-items: start;
    }

    .footer-brand .logo {
      font-size: 1.3rem;
      margin-bottom: 8px;
    }

    .footer-brand p {
      font-size: 0.85rem;
      color: var(--text-tertiary);
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      font-size: 0.9rem;
      color: var(--text-secondary);
      transition: all var(--transition);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-links a:hover {
      color: var(--accent);
      transform: translateX(4px);
    }

    .footer-links a i {
      width: 16px;
      font-size: 0.7rem;
      color: var(--text-tertiary);
    }

    .footer-contact {
      text-align: right;
    }

    .footer-contact a {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-primary);
      padding: 10px 20px;
      border: var(--border);
      border-radius: var(--radius-sm);
      transition: all var(--transition);
    }

    .footer-contact a:hover {
      border-color: #0077FF;
      color: #0077FF;
      box-shadow: var(--shadow);
    }

    .footer-contact a i {
      font-size: 1.4rem;
      color: #0077FF;
    }

    .footer-bottom {
      margin-top: 32px;
      padding-top: 24px;
      border-top: var(--border);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    .footer-bottom .tags {
      display: flex;
      gap: 16px;
      color: var(--text-tertiary);
      font-size: 0.85rem;
    }

    .footer-bottom .tags .accent {
      color: var(--accent);
      font-weight: 600;
    }

    @media (max-width: 768px) {
      .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
      }
      .footer-contact { text-align: center; }
      .footer-bottom { justify-content: center; text-align: center; }
      .footer-links { align-items: center; }
    }

    /* ============================================================
       MODAL
       ============================================================ */
    .modal-overlay {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.65);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      z-index: 2000;
      display: none;
      justify-content: center;
      align-items: center;
      opacity: 0;
      transition: opacity 0.3s ease;
      padding: 24px;
    }

    .modal-overlay.active {
      display: flex;
      opacity: 1;
    }

    .modal {
      background: var(--card-bg-solid);
      border-radius: var(--radius-lg);
      max-width: 580px;
      width: 100%;
      padding: 48px;
      position: relative;
      box-shadow: var(--shadow-xl);
      animation: modalIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
      max-height: 90vh;
      overflow-y: auto;
    }

    @keyframes modalIn {
      from { opacity: 0; transform: scale(0.92) translateY(16px); }
      to { opacity: 1; transform: scale(1) translateY(0); }
    }

    .modal-close {
      position: absolute;
      top: 20px;
      right: 20px;
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--bg-tertiary);
      border: none;
      color: var(--text-secondary);
      font-size: 1.1rem;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all var(--transition);
    }

    .modal-close:hover {
      background: var(--danger);
      color: #fff;
      transform: rotate(90deg);
    }

    .modal .title-row {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 20px;
    }

    .modal .title-row i {
      font-size: 2rem;
      width: 44px;
      text-align: center;
      color: var(--accent);
    }

    .modal .title-row h2 {
      font-size: 1.6rem;
      margin: 0;
    }

    .modal p {
      font-size: 1rem;
      line-height: 1.7;
      margin-bottom: 20px;
      color: var(--text-secondary);
    }

    .modal-feature-list {
      list-style: none;
      margin: 24px 0;
    }

    .modal-feature-list li {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 0;
      border-bottom: var(--border);
      font-size: 0.95rem;
      color: var(--text-secondary);
    }

    .modal-feature-list li:last-child { border-bottom: none; }

    .modal-feature-list i {
      color: var(--success);
      font-size: 0.75rem;
      width: 20px;
      text-align: center;
      flex-shrink: 0;
    }

    .modal-detail {
      background: var(--bg-secondary);
      padding: 20px;
      border-radius: var(--radius-sm);
      margin: 16px 0;
      font-size: 0.9rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    .modal-detail i {
      color: var(--accent);
      margin-right: 8px;
    }

    .modal-price {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--accent);
      margin-top: 24px;
      padding-top: 24px;
      border-top: var(--border);
    }

    .modal-price small {
      font-size: 0.9rem;
      font-weight: 400;
      color: var(--text-tertiary);
    }

    @media (max-width: 600px) {
      .modal { padding: 32px 24px; }
      .modal .title-row h2 { font-size: 1.3rem; }
    }

    /* ============================================================
       SCROLL ANIMATIONS
       ============================================================ */
    .reveal {
      opacity: 0;
      transform: translateY(32px);
      transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    .reveal-left {
      opacity: 0;
      transform: translateX(-40px);
      transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .reveal-left.visible {
      opacity: 1;
      transform: translateX(0);
    }

    .reveal-right {
      opacity: 0;
      transform: translateX(40px);
      transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .reveal-right.visible {
      opacity: 1;
      transform: translateX(0);
    }

    .reveal-scale {
      opacity: 0;
      transform: scale(0.92);
      transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .reveal-scale.visible {
      opacity: 1;
      transform: scale(1);
    }

    /* Stagger children */
    .stagger-children > * {
      opacity: 0;
      transform: translateY(24px);
      transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .stagger-children.visible > *:nth-child(1) { transition-delay: 0.05s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(3) { transition-delay: 0.15s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(4) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(5) { transition-delay: 0.25s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(6) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(7) { transition-delay: 0.35s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(8) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(9) { transition-delay: 0.45s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(10) { transition-delay: 0.5s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(11) { transition-delay: 0.55s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(12) { transition-delay: 0.6s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(13) { transition-delay: 0.65s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(14) { transition-delay: 0.7s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(15) { transition-delay: 0.75s; opacity: 1; transform: translateY(0); }
    .stagger-children.visible > *:nth-child(16) { transition-delay: 0.8s; opacity: 1; transform: translateY(0); }

    /* ============================================================
       SKELETON LOADING (page transition)
       ============================================================ */
    .page-loader {
      position: fixed;
      inset: 0;
      z-index: 99999;
      background: var(--bg-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      transition: opacity 0.6s ease, visibility 0.6s ease;
    }

    .page-loader.hidden {
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
    }

    .loader-spinner {
      width: 48px;
      height: 48px;
      border: 3px solid var(--bg-tertiary);
      border-top-color: var(--accent);
      border-radius: 50%;
      animation: spin 0.8s linear infinite;
    }

    @keyframes spin {
      to { transform: rotate(360deg); }
    }

    /* ============================================================
       FOCUS STYLES (Accessibility)
       ============================================================ */
    :focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 3px;
    }

    /* ============================================================
       UTILITY
       ============================================================ */
    .sr-only {
      position: absolute;
      width: 1px;
      height: 1px;
      padding: 0;
      margin: -1px;
      overflow: hidden;
      clip: rect(0,0,0,0);
      border: 0;
    }

    .gap-8 { gap: 8px; }
    .gap-12 { gap: 12px; }
    .gap-16 { gap: 16px; }
    .gap-24 { gap: 24px; }
    .flex { display: flex; }
    .flex-center { display: flex; align-items: center; justify-content: center; }
    .flex-wrap { flex-wrap: wrap; }
    .items-center { align-items: center; }
    .text-center { text-align: center; }
    .mt-8 { margin-top: 8px; }
    .mt-16 { margin-top: 16px; }
    .mt-24 { margin-top: 24px; }
    .mt-32 { margin-top: 32px; }
    .mb-8 { margin-bottom: 8px; }
    .mb-16 { margin-bottom: 16px; }
    .w-full { width: 100%; }

    /* ============================================================
       PRINT STYLES
       ============================================================ */
    @media print {
      header, .back-to-top, .modal-overlay, #scrollProgress, .page-loader {
        display: none !important;
      }
      .hero { min-height: auto; padding: 40px 0; }
    }