* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-tap-highlight-color: transparent;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, Helvetica, sans-serif;
            background-color: #000;
        }
        .container {
            position: relative;
            display: flex;
            min-height: 100vh;
            flex-direction: column;
            justify-content: flex-end;
            padding: 2.5rem 1.5rem;
            background-size: cover;
            background-position: center;
            background-image: url('./a7.webp');
        }
        .overlay-gradient {
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0.8) 100%);
            pointer-events: none;
        }
        .content-wrapper {
            position: relative;
            z-index: 10;
            width: 100%;
            max-width: 24rem;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .lock-icon-wrapper {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 4rem;
            height: 4rem;
            background-color: #e31837;
            border-radius: 1rem;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
        }
        .lock-icon {
            width: 1.75rem;
            height: 1.75rem;
            color: white;
        }
        .title {
            margin-top: 1.5rem;
            font-size: 1.25rem;
            font-weight: 600;
            color: white;
            text-align: center;
        }
        .subtitle {
            margin-top: 0.5rem;
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.7);
            text-align: center;
        }
        .captcha-display {
            margin-top: 1rem;
            padding: 0.75rem 2rem 0.75rem 2.5rem;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 0.75rem;
            backdrop-filter: blur(8px);
            font-family: monospace;
            font-size: 2.5rem;
            font-weight: bold;
            letter-spacing: 0.5em;
            color: white;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            text-decoration: line-through;
            text-decoration-color: rgba(255,255,255,0.5);
        }
        .input-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0.75rem;
            margin-top: 2rem;
            width: 100%;
        }
        .code-input {
            aspect-ratio: 1;
            width: 100%;
            background: rgba(255, 255, 255, 0.1);
            border: 2px solid rgba(255, 255, 255, 0.2);
            border-radius: 0.75rem;
            text-align: center;
            font-size: 1.5rem;
            font-weight: 600;
            color: white;
            outline: none;
            backdrop-filter: blur(8px);
            transition: border-color 0.2s;
        }
        .code-input:focus {
            border-color: #e31837;
        }
        .error-text {
            margin-top: 1rem;
            height: 1.25rem;
            font-size: 0.875rem;
            color: transparent;
            text-align: center;
            transition: color 0.2s;
        }
        .error-text.show {
            color: #ef4444;
        }
        .refresh-btn {
            margin-top: 0.5rem;
            background: none;
            border: none;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.875rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 0.375rem;
        }
        .refresh-btn:active {
            color: white;
        }
        .refresh-icon {
            width: 0.875rem;
            height: 0.875rem;
        }
        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-8px); }
            75% { transform: translateX(8px); }
        }
        .shake {
            animation: shake 0.3s ease-in-out;
        }