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

    :root {
      --bg: #0d1117;
      --bg-card: #161b22;
      --bg-elevated: #1c2129;
      --border: #30363d;
      --text: #c9d1d9;
      --text-muted: #8b949e;
      --text-bright: #f0f6fc;
      --accent: #3d7ea6;
      --accent-light: #4a92bd;
      --accent-glow: rgba(61, 126, 166, 0.15);
      --danger: #d4313b;
      --radius: 12px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.6;
      overflow-x: hidden;
    }

    a { color: var(--accent-light); text-decoration: none; }
    a:hover { text-decoration: underline; }

    /* ── Hero ── */
    .hero {
      position: relative;
      padding: 80px 24px 60px;
      text-align: center;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse at 50% 0%, rgba(61,126,166,0.18) 0%, transparent 70%);
      pointer-events: none;
    }

    .hero-logo {
      width: 100px;
      height: 100px;
      border-radius: 22px;
      margin-bottom: 24px;
      box-shadow: 0 8px 32px rgba(61,126,166,0.25);
    }

    .hero h1 {
      font-size: clamp(2rem, 5vw, 3.2rem);
      font-weight: 700;
      color: var(--text-bright);
      margin-bottom: 12px;
      letter-spacing: -0.02em;
    }

    .hero .tagline {
      font-size: clamp(1rem, 2.5vw, 1.25rem);
      color: var(--text-muted);
      max-width: 640px;
      margin: 0 auto 32px;
    }

    .hero-buttons {
      display: flex;
      gap: 12px;
      justify-content: center;
      flex-wrap: wrap;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 24px;
      font-size: 15px;
      font-weight: 600;
      font-family: inherit;
      border: none;
      border-radius: 8px;
      cursor: pointer;
      transition: background 0.2s, transform 0.1s;
      text-decoration: none;
    }

    .btn:hover { text-decoration: none; transform: translateY(-1px); }

    .btn-primary {
      background: var(--accent);
      color: #fff;
    }
    .btn-primary:hover { background: var(--accent-light); }

    .btn-outline {
      background: transparent;
      color: var(--text-bright);
      border: 1px solid var(--border);
    }
    .btn-outline:hover { border-color: var(--accent); background: var(--accent-glow); }

    .btn-donate {
      background: var(--danger);
      color: #fff;
    }
    .btn-donate:hover { background: #e04450; }

    /* ── Banner Image ── */
    .banner {
      max-width: 1100px;
      margin: 0 auto 60px;
      padding: 0 24px;
    }

    .banner img {
      width: 100%;
      border-radius: var(--radius);
      border: 1px solid var(--border);
      box-shadow: 0 16px 64px rgba(0,0,0,0.4);
    }

    /* ── Section ── */
    .section {
      max-width: 1100px;
      margin: 0 auto;
      padding: 60px 24px;
    }

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

    .section-header h2 {
      font-size: clamp(1.5rem, 3vw, 2rem);
      color: var(--text-bright);
      margin-bottom: 8px;
    }

    .section-header p {
      color: var(--text-muted);
      font-size: 1.05rem;
    }

    /* ── Feature Grid ── */
    .features {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 20px;
    }

    .feature-card {
      padding: 28px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      transition: border-color 0.2s, box-shadow 0.2s;
    }

    .feature-card:hover {
      border-color: var(--accent);
      box-shadow: 0 0 0 1px var(--accent), 0 8px 24px rgba(61,126,166,0.08);
    }

    .feature-icon {
      font-size: 28px;
      margin-bottom: 12px;
      display: block;
    }

    .feature-card h3 {
      font-size: 1.1rem;
      color: var(--text-bright);
      margin-bottom: 8px;
    }

    .feature-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* ── Creative Filters ── */
    .creative-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 12px;
    }

    .creative-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 16px 20px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 8px;
    }

    .creative-item .emoji { font-size: 24px; flex-shrink: 0; }

    .creative-item .info h4 {
      font-size: 0.95rem;
      color: var(--text-bright);
      margin-bottom: 2px;
    }

    .creative-item .info p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* ── Privacy ── */
    .privacy-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 16px;
    }

    .privacy-card {
      text-align: center;
      padding: 32px 20px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
    }

    .privacy-card .icon {
      font-size: 36px;
      display: block;
      margin-bottom: 12px;
    }

    .privacy-card h3 {
      font-size: 1rem;
      color: var(--text-bright);
      margin-bottom: 6px;
    }

    .privacy-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* ── How to Install ── */
    .steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 20px;
      counter-reset: step;
    }

    .step {
      position: relative;
      padding: 28px;
      padding-top: 56px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
    }

    .step::before {
      counter-increment: step;
      content: counter(step);
      position: absolute;
      top: 20px;
      left: 28px;
      width: 28px;
      height: 28px;
      background: var(--accent);
      color: #fff;
      font-weight: 700;
      font-size: 14px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .step h3 {
      font-size: 1rem;
      color: var(--text-bright);
      margin-bottom: 6px;
    }

    .step p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    .step code {
      background: var(--bg-elevated);
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 0.85rem;
      color: var(--accent-light);
    }

    /* ── Screenshots ── */
    .screenshots {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 20px;
    }

    .screenshots img {
      width: 100%;
      border-radius: var(--radius);
      border: 1px solid var(--border);
      box-shadow: 0 4px 16px rgba(0,0,0,0.3);
    }

    /* ── Footer ── */
    .site-footer {
      text-align: center;
      padding: 40px 24px;
      border-top: 1px solid var(--border);
      color: var(--text-muted);
      font-size: 0.85rem;
    }

    .site-footer .links {
      display: flex;
      justify-content: center;
      gap: 24px;
      margin-bottom: 16px;
      flex-wrap: wrap;
    }

    /* ── Responsive ── */
    @media (max-width: 640px) {
      .hero { padding: 48px 16px 40px; }
      .section { padding: 40px 16px; }
      .features, .creative-grid, .privacy-grid, .steps, .screenshots {
        grid-template-columns: 1fr;
      }
    }