:root {
      --void: #020408;
      --deep: #050A14;
      --abyss: #08101E;
      --surface: #0D1A2E;
      --elevated: #112238;

      --cyan: #00E5FF;
      --cyan-dim: rgba(0, 229, 255, 0.12);
      --cyan-glow: rgba(0, 229, 255, 0.4);
      --violet: #7B2FFF;
      --violet-dim: rgba(123, 47, 255, 0.12);
      --magenta: #FF2D6B;
      --gold: #FFB020;
      --gold-dim: rgba(255, 176, 32, 0.12);
      --gold-glow: rgba(255, 176, 32, 0.4);
      --green: #00FF88;
      --green-dim: rgba(0, 255, 136, 0.1);

      --text-primary: #E8F4FF;
      --text-secondary: rgba(200, 220, 255, 0.7);
      --text-muted: rgba(150, 180, 220, 0.45);

      --border: rgba(0, 229, 255, 0.13);
      --border-bright: rgba(0, 229, 255, 0.38);

      --font-display: 'Syne', sans-serif;
      --font-body: 'Space Grotesk', sans-serif;
      --font-mono: 'JetBrains Mono', monospace;
    }

    *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-padding-top: 80px; scroll-behavior: smooth; }

    body {
      font-family: var(--font-body);
      background: var(--void);
      color: var(--text-primary);
      overflow-x: hidden;
      line-height: 1.6;
      opacity: 0;
      transition: opacity 0.6s ease;
    }

    body::before {
      content: '';
      position: fixed; inset: 0;
      background-image:
        linear-gradient(rgba(0,229,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,229,255,0.025) 1px, transparent 1px);
      background-size: 60px 60px;
      z-index: 0; pointer-events: none;
    }

    body::after {
      content: '';
      position: fixed; inset: 0;
      background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.07) 2px, rgba(0,0,0,0.07) 4px);
      z-index: 0; pointer-events: none;
    }

    #starfield { position: fixed; inset: 0; z-index: 0; pointer-events: none; }

    .star {
      position: absolute; background: white; border-radius: 50%;
      animation: starPulse var(--dur, 4s) infinite ease-in-out var(--delay, 0s);
    }
    @keyframes starPulse {
      0%,100% { opacity: 0.12; transform: scale(1); }
      50% { opacity: 0.85; transform: scale(1.4); }
    }

    .nebula { position: fixed; border-radius: 50%; filter: blur(130px); z-index: 0; pointer-events: none; animation: nebulaDrift 25s infinite ease-in-out alternate; }
    .nebula-1 { width: 600px; height: 600px; top: -200px; left: -100px; background: radial-gradient(circle, rgba(123,47,255,0.16), transparent 70%); }
    .nebula-2 { width: 500px; height: 500px; top: 40%; right: -100px; background: radial-gradient(circle, rgba(0,229,255,0.1), transparent 70%); animation-delay: -10s; }
    .nebula-3 { width: 400px; height: 400px; bottom: 5%; left: 25%; background: radial-gradient(circle, rgba(255,45,107,0.08), transparent 70%); animation-delay: -18s; }
    @keyframes nebulaDrift {
      from { transform: translate(0,0) scale(1); }
      to { transform: translate(40px, 30px) scale(1.1); }
    }

    /* ─── NAVBAR ─── */
    .navbar {
      position: fixed; width: 100%; top: 0; z-index: 1000;
      padding: 1rem 0;
      background: rgba(2,4,8,0.7);
      backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
      border-bottom: 1px solid var(--border);
      transition: all 0.4s ease;
    }
    .navbar.scrolled { background: rgba(2,4,8,0.92); border-bottom-color: var(--border-bright); box-shadow: 0 0 40px rgba(0,229,255,0.07); }
    .navbar::before { content: ''; position: absolute; bottom: -1px; left: 0; width: 80px; height: 2px; background: linear-gradient(90deg, var(--cyan), transparent); }
    .navbar::after { content: ''; position: absolute; bottom: -1px; right: 0; width: 80px; height: 2px; background: linear-gradient(270deg, var(--violet), transparent); }

    .nav-container { max-width: 1280px; margin: 0 auto; padding: 0 2rem; display: flex; justify-content: space-between; align-items: center; }

    .navbar-brand {
      font-family: var(--font-display); font-weight: 800; font-size: 1.3rem;
      text-decoration: none; color: var(--text-primary); letter-spacing: -0.02em;
      display: flex; align-items: center; gap: 0.6rem; transition: all 0.3s ease;
    }
    .brand-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); animation: brandPulse 2s infinite; }
    @keyframes brandPulse {
      0%,100% { box-shadow: 0 0 8px var(--cyan); transform: scale(1); }
      50% { box-shadow: 0 0 20px var(--cyan), 0 0 40px rgba(0,229,255,0.3); transform: scale(1.3); }
    }
    .navbar-brand:hover { color: var(--cyan); text-decoration: none; }

    .nav-menu { display: flex; list-style: none; gap: 2rem; align-items: center; }
    .nav-link {
      font-family: var(--font-mono); font-size: 0.78rem; font-weight: 500;
      color: var(--text-secondary); text-decoration: none; letter-spacing: 0.08em;
      text-transform: uppercase; transition: all 0.3s ease; position: relative;
    }
    .nav-link::before { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 1px; background: var(--cyan); transition: width 0.3s ease; }
    .nav-link:hover { color: var(--cyan); }
    .nav-link:hover::before { width: 100%; }

    .login-btn {
      font-family: var(--font-mono); font-size: 0.75rem; padding: 0.5rem 1.2rem;
      border: 1px solid var(--border-bright); border-radius: 4px; color: var(--cyan) !important;
      clip-path: polygon(8px 0%,100% 0%,calc(100% - 8px) 100%,0% 100%);
      transition: all 0.3s ease;
    }
    .login-btn::before { display: none; }
    .login-btn:hover { background: var(--cyan-dim); border-color: var(--cyan); box-shadow: 0 0 20px var(--cyan-glow); }

    .mobile-menu-toggle { display: none; background: none; border: 1px solid var(--border); color: var(--text-primary); font-size: 1.2rem; cursor: pointer; padding: 0.5rem 0.7rem; border-radius: 4px; transition: all 0.3s ease; }
    .mobile-menu-toggle:hover { border-color: var(--cyan); color: var(--cyan); }

    /* ─── HERO ─── */
    .hero {
      position: relative; z-index: 1;
      padding: 9rem 2rem 5rem;
      text-align: center;
      background: radial-gradient(ellipse at 50% 0%, rgba(0,229,255,0.06) 0%, transparent 65%);
    }

    .status-badge {
      display: inline-flex; align-items: center; gap: 0.6rem;
      font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase;
      color: var(--cyan); border: 1px solid var(--border-bright); padding: 0.5rem 1.2rem; border-radius: 2px;
      margin-bottom: 2.5rem; background: rgba(0,229,255,0.04);
      clip-path: polygon(12px 0%,100% 0%,calc(100% - 12px) 100%,0% 100%);
      animation: fadeSlideUp 0.7s ease both;
    }
    .status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); animation: statusBlink 1.5s infinite; }
    @keyframes statusBlink { 0%,100% { opacity:1; } 50% { opacity:0.3; } }

    .hero h1 {
      font-family: var(--font-display); font-size: clamp(2.1rem, 4.1vw, 3.5rem);
      font-weight: 800; letter-spacing: -0.03em; line-height: 1.05;
      margin-bottom: 1.5rem; animation: fadeSlideUp 0.7s ease 0.1s both;
    }
    .hero h1 .accent {
      background: linear-gradient(135deg, var(--cyan) 0%, var(--violet) 50%, var(--magenta) 100%);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
      filter: drop-shadow(0 0 25px rgba(0,229,255,0.25));
    }

    .hero-subtitle {
      font-size: clamp(1rem, 1.6vw, 1.2rem); color: var(--text-secondary);
      max-width: 700px; margin: 0 auto 3rem; line-height: 1.8;
      animation: fadeSlideUp 0.7s ease 0.2s both;
    }

    /* MathJax equation hero block */
    .equation-hero {
      background: rgba(0,229,255,0.03); border: 1px solid var(--border); border-radius: 6px;
      padding: 2.5rem 3rem; max-width: 860px; margin: 0 auto 4rem;
      position: relative; overflow: hidden; animation: fadeSlideUp 0.7s ease 0.3s both;
    }
    .equation-hero::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px; background: linear-gradient(90deg, transparent, var(--cyan), var(--violet), transparent); animation: scanLine 3s infinite linear; }
    @keyframes scanLine {
      0% { transform: scaleX(0); transform-origin: left; }
      50% { transform: scaleX(1); transform-origin: left; }
      51% { transform: scaleX(1); transform-origin: right; }
      100% { transform: scaleX(0); transform-origin: right; }
    }
    .eq-corner { position: absolute; width: 14px; height: 14px; }
    .eq-corner.tl { top:0; left:0; border-top: 2px solid var(--cyan); border-left: 2px solid var(--cyan); }
    .eq-corner.tr { top:0; right:0; border-top: 2px solid var(--violet); border-right: 2px solid var(--violet); }
    .eq-corner.bl { bottom:0; left:0; border-bottom: 2px solid var(--violet); border-left: 2px solid var(--violet); }
    .eq-corner.br { bottom:0; right:0; border-bottom: 2px solid var(--cyan); border-right: 2px solid var(--cyan); }

    /* ─── TOGGLE ─── */
    .toggle-row {
      display: flex; justify-content: center; align-items: center; gap: 1.2rem;
      margin-bottom: 4rem; animation: fadeSlideUp 0.7s ease 0.4s both;
      position: relative; z-index: 1;
    }

    .toggle-label {
      font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.1em;
      text-transform: uppercase; color: var(--text-muted); transition: color 0.3s ease;
    }
    .toggle-label.active { color: var(--cyan); }

    .toggle-switch {
      position: relative; width: 56px; height: 28px; cursor: pointer;
    }
    .toggle-switch input { opacity: 0; width: 0; height: 0; }
    .toggle-track {
      position: absolute; inset: 0; background: var(--surface);
      border: 1px solid var(--border); border-radius: 28px; transition: all 0.3s ease;
      clip-path: polygon(6px 0%,100% 0%,calc(100% - 6px) 100%,0% 100%);
    }
    .toggle-track::before {
      content: ''; position: absolute; top: 3px; left: 4px;
      width: 20px; height: 20px; background: var(--text-muted); border-radius: 50%;
      transition: all 0.3s ease;
    }
    .toggle-switch input:checked + .toggle-track { background: rgba(0,229,255,0.1); border-color: var(--cyan); }
    .toggle-switch input:checked + .toggle-track::before { transform: translateX(26px); background: var(--cyan); box-shadow: 0 0 10px var(--cyan-glow); }

    .savings-badge {
      font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase;
      color: var(--void); background: var(--green); padding: 0.3rem 0.9rem; border-radius: 2px;
      font-weight: 700; box-shadow: 0 0 12px rgba(0,255,136,0.3);
    }

    /* ─── PRICING GRID ─── */
    .pricing-section { padding: 0 2rem 7rem; position: relative; z-index: 1; }

    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
      max-width: 1200px;
      margin: 0 auto 2rem;
    }

    .pricing-grid-bottom {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
      max-width: 1200px;
      margin: 0 auto;
    }

    .pricing-card {
      background: rgba(13,26,46,0.55);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 2.2rem;
      display: flex; flex-direction: column;
      position: relative; overflow: hidden;
      transition: all 0.4s ease;
      backdrop-filter: blur(12px);
    }

    .pricing-card::before {
      content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
      background: linear-gradient(90deg, transparent, var(--cyan), transparent);
      opacity: 0; transition: opacity 0.4s ease;
    }
    .pricing-card:hover { border-color: rgba(0,229,255,0.28); transform: translateY(-6px); box-shadow: 0 20px 60px rgba(0,229,255,0.08); }
    .pricing-card:hover::before { opacity: 1; }

    /* Featured card */
    .pricing-card.featured {
      border-color: rgba(0,229,255,0.5);
      background: rgba(0,229,255,0.04);
      box-shadow: 0 0 40px rgba(0,229,255,0.1), inset 0 0 40px rgba(0,229,255,0.03);
    }
    .pricing-card.featured::before { opacity: 1; background: linear-gradient(90deg, transparent, var(--cyan), var(--violet), transparent); }

    .popular-tag {
      position: absolute; top: 0; left: 50%; transform: translateX(-50%);
      font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase;
      color: var(--void); background: linear-gradient(90deg, var(--cyan), var(--violet));
      padding: 0.25rem 1.5rem; border-radius: 0 0 6px 6px;
      box-shadow: 0 0 20px rgba(0,229,255,0.4);
    }

    /* Elite card */
    .pricing-card.elite {
      border-color: rgba(255,176,32,0.4);
      background: rgba(255,176,32,0.04);
      box-shadow: 0 0 30px rgba(255,176,32,0.08);
    }
    .pricing-card.elite::before { opacity: 1; background: linear-gradient(90deg, transparent, var(--gold), transparent); }
    .pricing-card.elite:hover { border-color: rgba(255,176,32,0.6); box-shadow: 0 20px 60px rgba(255,176,32,0.12); }

    .limited-tag {
      position: absolute; top: 0; left: 50%; transform: translateX(-50%);
      font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase;
      color: var(--void); background: var(--gold); padding: 0.25rem 1.5rem; border-radius: 0 0 6px 6px;
      box-shadow: 0 0 15px var(--gold-glow);
    }

    .card-index {
      font-family: var(--font-mono); font-size: 0.65rem; color: var(--text-muted);
      letter-spacing: 0.1em; margin-bottom: 1.5rem; display: flex; align-items: center; gap: 0.6rem;
    }
    .card-index::after { content: ''; flex: 1; height: 1px; background: var(--border); }

    .card-name {
      font-family: var(--font-display); font-size: 1.4rem; font-weight: 800;
      color: var(--text-primary); margin-bottom: 0.5rem;
    }
    .card-name.elite-name { color: var(--gold); }

    .card-desc { font-size: 0.94rem; color: var(--text-secondary); line-height: 1.72; margin-bottom: 1.8rem; min-height: 42px; }

    .price-block { margin-bottom: 2rem; }
    .price-amount {
      font-family: var(--font-display); font-size: 3.2rem; font-weight: 800;
      color: var(--text-primary); line-height: 1; display: block;
    }
    .price-amount.gold { color: var(--gold); text-shadow: 0 0 20px var(--gold-glow); }
    .price-period { font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-muted); letter-spacing: 0.08em; margin-top: 0.3rem; }
    .price-annual-equiv { font-family: var(--font-mono); font-size: 0.72rem; color: var(--green); margin-top: 0.2rem; }

    .feature-list { list-style: none; margin-bottom: 2rem; flex-grow: 1; }
    .feature-list li {
      display: flex; align-items: flex-start; gap: 0.7rem;
      padding: 0.6rem 0; border-bottom: 1px solid rgba(0,229,255,0.06);
      font-size: 0.93rem; color: var(--text-secondary);
    }
    .feature-list li:last-child { border-bottom: none; }
    .feature-list li i.fa-check { color: var(--green); font-size: 0.8rem; margin-top: 0.2rem; flex-shrink: 0; }
    .feature-list li i.fa-star { color: var(--gold); font-size: 0.8rem; margin-top: 0.2rem; flex-shrink: 0; }
    .feature-list li strong { color: var(--text-primary); }

    /* ─── BUTTONS ─── */
    .btn-subscribe {
      display: flex; align-items: center; justify-content: center; gap: 0.5rem;
      width: 100%; padding: 0.9rem 1.5rem; border-radius: 4px;
      font-family: var(--font-display); font-weight: 700; font-size: 0.9rem;
      text-decoration: none; transition: all 0.3s ease; border: none;
      clip-path: polygon(10px 0%,100% 0%,calc(100% - 10px) 100%,0% 100%);
    }

    .btn-primary-card {
      background: linear-gradient(135deg, var(--cyan), var(--violet));
      color: var(--void);
    }
    .btn-primary-card:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(0,229,255,0.35); color: var(--void); text-decoration: none; }

    .btn-outline-card {
      background: transparent; border: 1px solid var(--border-bright) !important;
      color: var(--text-primary); clip-path: polygon(10px 0%,100% 0%,calc(100% - 10px) 100%,0% 100%);
    }
    .btn-outline-card:hover { background: var(--cyan-dim); border-color: var(--cyan) !important; color: var(--cyan); text-decoration: none; transform: translateY(-2px); }

    .btn-elite-card {
      background: linear-gradient(135deg, var(--gold), #FF8C00);
      color: var(--void);
    }
    .btn-elite-card:hover { transform: translateY(-2px); box-shadow: 0 10px 30px var(--gold-glow); color: var(--void); text-decoration: none; }

    /* ─── COMMUNITY ─── */
    .community-section { padding: 6rem 2rem; position: relative; z-index: 1; border-top: 1px solid var(--border); }

    .community-card {
      max-width: 880px; margin: 0 auto;
      background: rgba(123,47,255,0.05); border: 1px solid rgba(123,47,255,0.28); border-radius: 8px;
      padding: 3.5rem; position: relative; overflow: hidden;
      clip-path: polygon(0 0,calc(100% - 28px) 0,100% 28px,100% 100%,28px 100%,0 calc(100% - 28px));
    }
    .community-card::after { content: ''; position: absolute; top: 0; right: 0; width: 28px; height: 28px; border-top: 1px solid rgba(123,47,255,0.55); border-right: 1px solid rgba(123,47,255,0.55); }

    .community-inner { display: flex; align-items: center; gap: 3rem; }
    .community-icon-box {
      flex-shrink: 0; width: 80px; height: 80px; border-radius: 50%;
      background: rgba(123,47,255,0.15); border: 1px solid rgba(123,47,255,0.4);
      display: flex; align-items: center; justify-content: center; font-size: 2rem; color: var(--violet);
      box-shadow: 0 0 30px rgba(123,47,255,0.2);
    }
    .community-text h3 { font-family: var(--font-display); font-size: 1.8rem; font-weight: 800; color: var(--text-primary); margin-bottom: 0.8rem; }
    .community-text p { color: var(--text-secondary); font-size: 1rem; line-height: 1.8; margin-bottom: 1.8rem; }

    /* ─── HOW IT WORKS ─── */
    .how-it-works-section { padding: 7rem 2rem; position: relative; z-index: 1; background: rgba(5,10,20,0.5); border-top: 1px solid var(--border); }

    .how-it-works-timeline { position: relative; max-width: 1200px; margin: 0 auto; list-style: none; padding: 0; }
    .how-it-works-timeline::before {
      content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
      width: 1px; height: 100%; background: linear-gradient(180deg, var(--cyan), var(--violet), transparent); opacity: 0.25;
    }

    .step-item {
      position: relative; width: 50%; padding: 1.5rem 4rem;
      opacity: 0; transform: translateY(40px); transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .step-item.visible { opacity: 1; transform: translateY(0); }
    .step-item:nth-child(odd) { left: 0; }
    .step-item:nth-child(even) { left: 50%; }

    .step-card {
      background: rgba(13,26,46,0.65); border: 1px solid var(--border); border-radius: 6px;
      padding: 2rem; transition: all 0.4s ease; backdrop-filter: blur(10px);
    }
    .step-card:hover { border-color: var(--border-bright); transform: scale(1.02); }

    .step-number {
      position: absolute; top: 50%; transform: translateY(-50%);
      width: 44px; height: 44px; border-radius: 50%;
      background: linear-gradient(135deg, var(--cyan), var(--violet));
      display: flex; align-items: center; justify-content: center;
      font-family: var(--font-mono); font-size: 0.95rem; font-weight: 600; color: var(--void);
      box-shadow: 0 0 18px rgba(0,229,255,0.3); z-index: 2;
    }
    .step-item:nth-child(odd) .step-number { right: -22px; }
    .step-item:nth-child(even) .step-number { left: -22px; }

    .step-icon { font-size: 1.6rem; color: var(--cyan); filter: drop-shadow(0 0 8px rgba(0,229,255,0.4)); margin-bottom: 0.8rem; display: block; }
    .step-card h3 { font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; color: var(--text-primary); margin-bottom: 0.5rem; }
    .step-card p { color: var(--text-secondary); font-size: 0.93rem; line-height: 1.68; }

    /* ─── SECTION HEADER ─── */
    .section-header { text-align: center; margin-bottom: 4rem; }
    .section-tag {
      display: inline-block; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.2em;
      text-transform: uppercase; color: var(--cyan); border: 1px solid var(--border); padding: 0.35rem 1rem;
      border-radius: 2px; margin-bottom: 1.2rem; background: rgba(0,229,255,0.04);
    }
    .section-title {
      font-family: var(--font-display); font-size: clamp(1.7rem, 2.8vw, 2.25rem);
      font-weight: 800; letter-spacing: -0.03em; color: var(--text-primary); margin-bottom: 1.2rem; line-height: 1.1;
    }
    .section-title .accent {
      background: linear-gradient(135deg, var(--cyan), var(--violet));
      -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    }
    .section-subtitle { font-size: 1.05rem; color: var(--text-secondary); max-width: 700px; margin: 0 auto; line-height: 1.8; }

    /* Shared button */
    .cta-button {
      display: inline-flex; align-items: center; gap: 0.6rem;
      background: linear-gradient(135deg, var(--cyan), var(--violet));
      color: var(--void); padding: 1rem 2.2rem; border-radius: 4px; text-decoration: none;
      font-family: var(--font-display); font-weight: 700; font-size: 0.95rem;
      clip-path: polygon(10px 0%,100% 0%,calc(100% - 10px) 100%,0% 100%);
      transition: all 0.3s ease;
    }
    .cta-button:hover { transform: translateY(-3px); box-shadow: 0 10px 35px rgba(0,229,255,0.35); color: var(--void); text-decoration: none; }

    .cta-button-outline {
      display: inline-flex; align-items: center; gap: 0.6rem;
      background: transparent; border: 1px solid rgba(123,47,255,0.5); color: var(--text-primary);
      padding: 1rem 2.2rem; border-radius: 4px; text-decoration: none;
      font-family: var(--font-display); font-weight: 600; font-size: 0.95rem;
      clip-path: polygon(10px 0%,100% 0%,calc(100% - 10px) 100%,0% 100%);
      transition: all 0.3s ease;
    }
    .cta-button-outline:hover { background: var(--violet-dim); border-color: var(--violet); color: var(--text-primary); transform: translateY(-2px); text-decoration: none; }

    /* ─── FOOTER ─── */
    .footer { background: var(--void); border-top: 1px solid var(--border); padding: 5rem 2rem 2rem; position: relative; z-index: 1; }
    .footer-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 3rem; max-width: 1280px; margin: 0 auto 4rem; }
    .footer-column h4 { font-family: var(--font-display); font-size: 1rem; font-weight: 700; color: var(--text-primary); margin-bottom: 1.5rem; display: flex; align-items: center; gap: 0.5rem; }
    .footer-column h4::before { content: '//'; font-family: var(--font-mono); color: var(--cyan); font-size: 0.8rem; }
    .footer-column p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; }
    .footer-column ul { list-style: none; }
    .footer-column ul li { margin-bottom: 0.7rem; }
    .footer-column ul a { color: var(--text-secondary); text-decoration: none; font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.03em; transition: color 0.2s; }
    .footer-column ul a:hover { color: var(--cyan); }
    .footer-social { display: flex; gap: 1rem; margin-top: 1.5rem; }
    .footer-social a { color: var(--text-muted); font-size: 1.2rem; transition: all 0.3s ease; }
    .footer-social a:hover { color: var(--cyan); text-shadow: 0 0 10px var(--cyan-glow); transform: translateY(-2px); }
    .footer-bottom { text-align: center; padding-top: 2rem; border-top: 1px solid var(--border); font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-muted); letter-spacing: 0.05em; max-width: 1280px; margin: 0 auto; }

    /* ─── UTILITY CLASSES ─── */
    .d-none { 
      display: none !important; 
    }

    /* Smooth fade-in effect when prices toggle */
    .price-block span:not(.d-none), 
    .price-block div:not(.d-none) {
      animation: fadeIn 0.4s ease-in-out;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(-5px); }
      to { opacity: 1; transform: translateY(0); }
    }

    /* ─── ANIMATIONS ─── */
    @keyframes fadeSlideUp { from { opacity:0; transform:translateY(30px); } to { opacity:1; transform:translateY(0); } }

    .reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.7s ease, transform 0.7s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }

    /* ─── RESPONSIVE ─── */
    @media (max-width: 1100px) {
      .pricing-grid { grid-template-columns: repeat(2, 1fr); }
      .pricing-grid-bottom { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 992px) {
      .how-it-works-timeline::before { left: 24px; }
      .step-item, .step-item:nth-child(even) { width: 100%; left: 0; padding: 1.5rem 1.5rem 1.5rem 70px; }
      .step-item:nth-child(odd) .step-number, .step-item:nth-child(even) .step-number { left: 0; right: auto; top: 2rem; transform: none; }
      .community-inner { flex-direction: column; text-align: center; }
    }
    @media (max-width: 700px) {
      .pricing-grid, .pricing-grid-bottom { grid-template-columns: 1fr; }
      .nav-menu { position: fixed; top: 73px; left: 0; width: 100%; background: rgba(2,4,8,0.97); flex-direction: column; padding: 2rem; gap: 1.5rem; transform: translateY(-120%); transition: transform 0.4s ease; border-bottom: 1px solid var(--border); }
      .nav-menu.active { transform: translateY(0); }
      .mobile-menu-toggle { display: block; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
      .nebula, #starfield { display: none; }
    }