:root {
            --bg-color: #f9fafb;
            --grid-color: #e5e7eb;
            --surface: #ffffff;
            --text-main: #111827;
            --text-muted: #6b7280;
        }

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

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--bg-color);
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 100vh;
            padding: 20px;
            /* Тот самый четкий фон-сетка */
            background-image: linear-gradient(var(--grid-color) 1px, transparent 1px),
                              linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
            background-size: 32px 32px;
            background-position: center center;
        }

        .card {
            background: var(--surface);
            max-width: 440px;
            width: 100%;
            padding: 48px 32px;
            border-radius: 24px;
            box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.05),
                        0 1px 3px rgba(0, 0, 0, 0.05);
            text-align: center;
            position: relative;
        }

        /* Переключатель языков */
        .lang-switch {
            position: absolute;
            top: 24px;
            right: 24px;
            display: flex;
            background: #f3f4f6;
            border-radius: 99px;
            padding: 4px;
        }

        .lang-btn {
            background: transparent;
            border: none;
            padding: 6px 12px;
            border-radius: 99px;
            font-size: 12px;
            font-weight: 600;
            color: var(--text-muted);
            cursor: pointer;
            transition: all 0.2s ease;
            font-family: inherit;
        }

        .lang-btn.active {
            background: #ffffff;
            color: var(--text-main);
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
        }

        .icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 24px;
            color: var(--text-main);
        }

        h1 {
            font-size: 28px;
            font-weight: 600;
            letter-spacing: -0.03em;
            margin-bottom: 12px;
        }

        p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.5;
            margin-bottom: 32px;
            min-height: 48px; 
        }

        .tg-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            width: 100%;
            background-color: #000000;
            color: #ffffff;
            text-decoration: none;
            padding: 16px;
            border-radius: 14px;
            font-size: 16px;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .tg-link:hover {
            background-color: #374151;
            transform: translateY(-2px);
        }

        .tg-link svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }