* { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            color: #1f2937;
            background: #ffffff;
            overflow-x: hidden;
            padding-top: 72px;
        }
        a { text-decoration: none; color: inherit; }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 100;
            background: rgba(255,255,255,0.95); backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.06);
            transition: box-shadow 0.3s;
        }
        .header.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,0.08); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 72px;
        }
        .header-logo {
            display: flex; align-items: center; gap: 10px;
            font-weight: 800; font-size: 1.35rem;
            color: #1f2937;
        }
        .header-logo img { height: 36px; width: auto; }
        .header-logo span { background: linear-gradient(135deg, #4F46E5, #7C3AED); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .header-nav { display: flex; align-items: center; gap: 12px; }
        .btn-outline {
            padding: 10px 24px; border-radius: 12px; font-weight: 600; font-size: 0.9rem;
            border: 2px solid #4F46E5; color: #4F46E5;
            transition: all 0.3s; background: transparent;
        }
        .btn-outline:hover { background: #4F46E5; color: #fff; transform: scale(1.03); }
        .btn-primary {
            padding: 12px 32px; border-radius: 12px; font-weight: 700; font-size: 0.95rem;
            background: #4F46E5; color: #fff; border: none;
            transition: all 0.3s; cursor: pointer; display: inline-block;
        }
        .btn-primary:hover { transform: scale(1.05); box-shadow: 0 8px 24px rgba(79,70,229,0.35); }
        @media (max-width: 768px) {
            body { padding-top: 64px; }
            .header-inner { height: 64px; }
            .btn-outline { padding: 8px 18px; font-size: 0.85rem; }
            .btn-primary { padding: 10px 24px; font-size: 0.85rem; }
        }