* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft Yahei", sans-serif;
        }
        body {
            background: #1a1a1a;
            color: #fff;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
        }
        .login-container {
            width: 375px;
            height: 667px;
            background: #2d2d2d;
            border: 2px solid #444;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        .title {
            font-size: 32px;
            font-weight: bold;
            color: #ffd700;
            margin-bottom: 40px;
        }
        .input-group {
            width: 80%;
            margin-bottom: 20px;
        }
        .input-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 14px;
            color: #ccc;
        }
        .input-group input {
            width: 100%;
            padding: 12px;
            background: #333;
            border: 1px solid #555;
            border-radius: 4px;
            color: #fff;
            font-size: 16px;
        }
        .agreement-row {
            width: 80%;
            display: flex;
            align-items: flex-start;
            gap: 7px;
            color: #bbb;
            font-size: 12px;
            line-height: 1.5;
        }
        .agreement-row input { margin-top: 3px; flex: 0 0 auto; }
        .agreement-row a { color: #79b9ea; text-decoration: none; }
        .age-tip { width: 80%; margin-top: 8px; color: #888; font-size: 11px; text-align: center; }
        .tap-login-btn { margin-top: 18px; background: #2f80c0; color: #fff; }
        .tap-login-note { width: 80%; margin-top: 8px; color: #90a6bb; font-size: 11px; text-align: center; }
        .btn-group {
            display: flex;
            gap: 20px;
            margin-top: 18px;
        }
        .btn {
            padding: 12px 30px;
            background: linear-gradient(to bottom, #ffd700, #ffb800);
            border: none;
            border-radius: 8px;
            color: #000;
            font-size: 16px;
            font-weight: bold;
            cursor: pointer;
        }